Update for 0.10.15

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Changelog

@@ -4,6 +4,170 @@ releases are sorted from youngest to oldest.
 version next:
 
 
+version 0.10.11
+
+- pthread: Avoid spurious wakeups
+- pthread: Fix deadlock during thread initialization
+- mpegvideo: Initialize chroma_*_shift and codec_tag even if the size is 0
+- vc1dec: Don't decode slices when the latest slice header failed to decode
+- vc1dec: Make sure last_picture is initialized in vc1_decode_skip_blocks
+- r3d: Add more input value validation
+- fraps: Make the input buffer size checks more strict
+- svq3: Avoid a division by zero
+- rmdec: Validate the fps value
+- twinvqdec: Check the ibps parameter separately
+- asfdec: Check the return value of asf_read_stream_properties
+- mxfdec: set audio timebase to 1/samplerate
+- pcx: Check the packet size before assuming it fits a palette
+- rpza: Fix a buffer size check
+- xxan: Disallow odd width
+- xan: Only read within the data that actually was initialized
+- xan: Use bytestream2 to limit reading to within the buffer
+- pcx: Consume the whole packet if giving up due to missing palette
+- pngdec: Stop trying to decode once inflate returns Z_STREAM_END
+- mov: Make sure the read sample count is nonnegative
+- bfi: Add some very basic sanity checks for input packet sizes
+- bfi: Avoid divisions by zero
+- electronicarts: Add more sanity checking for the number of channels
+- riffdec: Add sanity checks for the sample rate
+- mvi: Add sanity checking for the audio frame size
+- xwma: Avoid division by zero
+- avidec: Make sure a packet is large enough before reading its data
+- vqf: Make sure the bitrate is in the valid range
+- vqf: Make sure sample_rate is set to a valid value
+- vc1dec: Undo mpegvideo initialization if unable to allocate tables
+- vc1dec: Fix leaks in ff_vc1_decode_init_alloc_tables on errors
+- wnv1: Make sure the input packet is large enough
+- dca: Validate the lfe parameter
+- rl2: Avoid a division by zero
+- wtv: Add more sanity checks for a length read from the file
+- segafilm: Validate the number of audio channels
+- qpeg: Add checks for running out of rows in qpeg_decode_inter
+- mpegaudiodec: Validate that the number of channels fits at the given offset
+- asv1: Verify the amount of extradata
+- idroqdec: Make sure a video stream has been allocated before returning packets
+- rv10: Validate the dimensions set from the container
+- xmv: Add more sanity checks for parameters read from the bitstream
+- ffv1: Make sure at least one slice context is initialized
+- truemotion2: Use av_freep properly in an error path
+- eacmv: Make sure a reference frame exists before referencing it
+- mpeg4videodec: Check the width/height in mpeg4_decode_sprite_trajectory
+- ivi_common: Make sure color planes have been initialized
+- oggparseogm: Convert to use bytestream2
+- rv34: Check the return value from ff_rv34_decode_init
+- matroskadec: Verify realaudio codec parameters
+- mace: Make sure that the channel count is set to a valid value
+- svq3: Check for any negative return value from ff_h264_check_intra_pred_mode
+- vp3: Check the framerate for validity
+- cavsdec: Make sure a sequence header has been decoded before decoding pictures
+- sierravmd: Do sanity checking of frame sizes
+- omadec: Properly check lengths before incrementing the position
+- mpc8: Make sure the first stream exists before parsing the seek table
+- mpc8: Check the seek table size parsed from the bitstream
+- zmbvdec: Check the buffer size for uncompressed data
+- ape: Don't allow the seektable to be omitted
+- shorten: Break out of loop looking for fmt chunk if none is found
+- shorten: Use a checked bytestream reader for the wave header
+- smacker: Make sure we don't fill in huffman codes out of range
+- smacker: Avoid integer overflow when allocating packets
+- smacker: Don't return packets in unallocated streams
+- dsicin: Add some basic sanity checks for fields read from the file
+- roqvideodec: check dimensions validity
+- qdm2: check array index before use, fix out of array accesses
+- alsdec: check block length
+
+
+version 0.10.10
+
+- x86: fft: Remove 3DNow! optimizations, they break FATE
+- x86: ac3dsp: Drop mmx variant of ac3_max_msb_abs_int16
+- aac: Check init_get_bits return value
+- aac: return meaningful errors
+- dsicinav: K&R formatting cosmetics
+- mov: Seek back if overreading an individual atom
+- vcr1: add sanity checks
+- pictordec: pass correct context to avpriv_request_sample
+- dsicinav: Clip the source size to the expected maximum
+- alsdec: Clean up error paths
+- ogg: Fix potential infinite discard loop
+- nuv: check rtjpeg_decode_frame_yuv420 return value
+- nuv: Reset the frame on resize
+- nuv: Use av_fast_realloc
+- nuv: return meaningful error codes.
+- nuv: Pad the lzo outbuf
+- nuv: Do not ignore lzo decompression failures
+- oma: correctly mark and decrypt partial packets
+- oma: check geob tag boundary
+- oma: refactor seek function
+- 8bps: Bound-check the input buffer
+- rtmp: Do not misuse memcmp
+- rtmp: rename data_size to size
+- lavc: set the default rc_initial_buffer_occupancy
+- 4xm: Reject not a multiple of 16 dimension
+- 4xm: do not overread the prestream buffer
+- 4xm: validate the buffer size before parsing it
+- indeo: Do not reference mismatched tiles
+- indeo: Sanitize ff_ivi_init_planes fail paths
+- indeo: Bound-check before applying motion compensation
+- indeo: Bound-check before applying transform
+- indeo: reject negative array indexes
+- indeo: Cosmetic formatting
+- indeo: Refactor ff_ivi_init_tiles and ivi_decode_blocks
+- indeo: Refactor ff_ivi_dec_huff_desc
+- lavf: fix the comparison in an overflow check
+- dv: Add a guard to not overread the ppcm array
+- mpegvideo: Avoid 32-bit wrapping of linesize multiplications
+- mjpegb: Detect changing number of planes in interlaced video
+- matroskadec: Check that .lang was allocated and set before reading it
+- ape demuxer: check for EOF in potentially long loops
+- lavf: avoid integer overflow when estimating bitrate
+- pictordec: break out of both decoding loops when y drops below 0
+- ac3: Return proper error codes
+- ac3: Clean up the error paths
+- ac3: Do not clash with normal AVERROR
+- dxa: Make sure the reference frame exists
+- h261: check the mtype index
+- segafilm: Error out on impossible packet size
+- ogg: Always alloc the private context in vorbis_header
+- vc1: check mb_height validity.
+- vc1: check the source buffer in vc1_mc functions
+- bink: Bound check the quantization matrix.
+- xl: Make sure the width is valid
+- alsdec: Fix the clipping range
+- dsicinav: Bound-check the source buffer when needed
+- mov: Do not allow updating the time scale after it has been set
+- ac3dec: Don't consume more data than the actual input packet size
+- indeo: Reject impossible FRAMETYPE_NULL
+- indeo5: return proper error codes
+- indeo4: Validate scantable dimension
+- indeo4: Check the quantization matrix index
+- indeo4: Do not access missing reference MV
+- adpcm: Unbreak ima-dk4
+- ac3dec: validate channel output mode against channel count
+- dca: Respect the current limits in the downmixing capabilities
+- dca: Error out on missing DSYNC
+- pcm: always use codec->id instead of codec_id
+- mlpdec: Do not set invalid context in read_restart_header
+- pcx: Do not overread source buffer in pcx_rle_decode
+- wmavoice: conceal clearly corrupted blocks
+- iff: Do not read over the source buffer
+- qdm2: Conceal broken samples
+- qdm2: refactor joined stereo support
+- adpcm: Write the correct number of samples for ima-dk4
+- imc: Catch a division by zero
+- atrac3: Error on impossible encoding/channel combinations
+- atrac3: set the getbits context the right buffer_end
+- atrac3: fix error handling
+- qdm2: check and reset dithering index per channel
+- westwood_vqa: do not free extradata on error in read_header
+- vqavideo: check the version
+- rmdec: Use the AVIOContext given as parameter in rm_read_metadata()
+- avio: Handle AVERROR_EOF in the same way as the return value 0
+- wtv: Mark attachment with a negative stream id
+- avidec: Let the inner dv demuxer take care of discarding
+- swfdec: do better validation of tag length
+
+
 version 0.10.8
 - kmvc: Clip pixel position to valid range
 - kmvc: use fixed sized arrays in the context

Doxyfile

@@ -31,7 +31,7 @@ PROJECT_NAME           = FFmpeg
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.10.9
+PROJECT_NUMBER         = 0.10.15
 
 # With the PROJECT_LOGO tag one can specify an logo or icon that is included
 # in the documentation. The maximum height of the logo should not exceed 55

RELEASE

@@ -1 +1 @@
-0.10.9
+0.10.15

VERSION

@@ -1 +1 @@
-0.10.9
+0.10.15

cmdutils.c

@@ -56,7 +56,7 @@
 struct SwsContext *sws_opts;
 AVDictionary *format_opts, *codec_opts;
 
-const int this_year = 2013;
+const int this_year = 2014;
 
 static FILE *report_file;
 
@@ -423,7 +423,10 @@ int opt_default(const char *opt, const char *arg)
     const AVOption *oc, *of, *os;
     char opt_stripped[128];
     const char *p;
-    const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class(), *sc;
+    const AVClass *cc = avcodec_get_class(), *fc = avformat_get_class();
+#if CONFIG_SWSCALE
+    const AVClass *sc = sws_get_class();
+#endif
 
     if (!(p = strchr(opt, ':')))
         p = opt + strlen(opt);
@@ -438,7 +441,6 @@ int opt_default(const char *opt, const char *arg)
                           AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ)))
         av_dict_set(&format_opts, opt, arg, FLAGS(of));
 #if CONFIG_SWSCALE
-    sc = sws_get_class();
     if ((os = av_opt_find(&sc, opt, NULL, 0,
                           AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ))) {
         // XXX we only support sws_flags, not arbitrary sws options

configure

@@ -54,6 +54,8 @@ if test "$E1" != 0 || test "$E2" = 0; then
     exit 1
 fi
 
+test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
+
 show_help(){
 cat <<EOF
 Usage: configure [options]
@@ -688,6 +690,13 @@ check_ld(){
     check_cmd $ld $LDFLAGS $flags -o $TMPE $TMPO $libs $extralibs
 }
 
+print_include(){
+    hdr=$1
+    test "${hdr%.h}" = "${hdr}" &&
+        echo "#include $hdr"    ||
+        echo "#include <$hdr>"
+}
+
 check_cppflags(){
     log check_cppflags "$@"
     set -- $($filter_cppflags "$@")
@@ -765,7 +774,7 @@ check_func_headers(){
     shift 2
     {
         for hdr in $headers; do
-            echo "#include <$hdr>"
+            print_include $hdr
         done
         for func in $funcs; do
             echo "long check_$func(void) { return (long) $func; }"
@@ -3134,7 +3143,7 @@ enabled libdirac   && require_pkg_config dirac                          \
     "libdirac_decoder/dirac_parser.h libdirac_encoder/dirac_encoder.h"  \
     "dirac_decoder_init dirac_encoder_init"
 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
-enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
+enabled libfreetype && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
 enabled libgsm     && require  libgsm gsm/gsm.h gsm_create -lgsm
 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
@@ -3367,6 +3376,8 @@ elif enabled clang; then
     check_cflags -mllvm -stack-alignment=16
     check_cflags -Qunused-arguments
     check_cflags -Werror=return-type
+    check_cflags -Werror=implicit-function-declaration
+    check_cflags -Werror=missing-prototypes
 elif enabled armcc; then
     # 2523: use of inline assembler is deprecated
     add_cflags -W${armcc_opt},--diag_suppress=2523

doc/platform.texi

@@ -51,14 +51,15 @@ The toolchain provided with Xcode is sufficient to build the basic
 unacelerated code.
 
 Mac OS X on PowerPC or ARM (iPhone) requires a preprocessor from
-@url{http://github.com/yuvi/gas-preprocessor} to build the optimized
-assembler functions. Just download the Perl script and put it somewhere
+@url{https://github.com/FFmpeg/gas-preprocessor} or
+@url{https://github.com/yuvi/gas-preprocessor} to build the optimized
+assembler functions. Put the Perl script somewhere
 in your PATH, FFmpeg's configure will pick it up automatically.
 
 Mac OS X on amd64 and x86 requires @command{yasm} to build most of the
 optimized assembler functions. @uref{http://www.finkproject.org/, Fink},
 @uref{http://www.gentoo.org/proj/en/gentoo-alt/prefix/bootstrap-macos.xml, Gentoo Prefix},
-@uref{http://mxcl.github.com/homebrew/, Homebrew}
+@uref{https://mxcl.github.com/homebrew/, Homebrew}
 or @uref{http://www.macports.org, MacPorts} can easily provide it.
 
 

doc/protocols.texi

@@ -242,7 +242,7 @@ data transferred over RDT).
 
 The muxer can be used to send a stream using RTSP ANNOUNCE to a server
 supporting it (currently Darwin Streaming Server and Mischa Spiegelmock's
-@uref{http://github.com/revmischa/rtsp-server, RTSP server}).
+@uref{https://github.com/revmischa/rtsp-server, RTSP server}).
 
 The required syntax for a RTSP url is:
 @example

ffmpeg.c

@@ -4057,8 +4057,6 @@ static OutputStream *new_video_stream(OptionsContext *o, AVFormatContext *oc)
             if (p) p++;
         }
         video_enc->rc_override_count = i;
-        if (!video_enc->rc_initial_buffer_occupancy)
-            video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size * 3 / 4;
         video_enc->intra_dc_precision = intra_dc_precision - 8;
 
         if (do_psnr)
@@ -4698,7 +4696,8 @@ static int opt_target(OptionsContext *o, const char *opt, const char *arg)
             for (j = 0; j < nb_input_files; j++) {
                 for (i = 0; i < input_files[j].nb_streams; i++) {
                     AVCodecContext *c = input_files[j].ctx->streams[i]->codec;
-                    if (c->codec_type != AVMEDIA_TYPE_VIDEO)
+                    if (c->codec_type != AVMEDIA_TYPE_VIDEO ||
+                        !c->time_base.num)
                         continue;
                     fr = c->time_base.den * 1000 / c->time_base.num;
                     if (fr == 25000) {

ffplay.c

@@ -1611,7 +1611,7 @@ static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
 
     if (pic->data[0] == NULL) {
         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
-        return codec->get_buffer(codec, pic);
+        return input_get_buffer(codec, pic);
     }
 
     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||

libavcodec/4xm.c

@@ -403,6 +403,8 @@ static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){
     unsigned int bitstream_size, bytestream_size, wordstream_size, extra, bytestream_offset, wordstream_offset;
 
     if(f->version>1){
+        if (length < 20)
+            return AVERROR_INVALIDDATA;
         extra=20;
         if (length < extra)
             return -1;
@@ -560,7 +562,10 @@ static int decode_i_mb(FourXContext *f){
     return 0;
 }
 
-static const uint8_t *read_huffman_tables(FourXContext *f, const uint8_t * const buf, int buf_size){
+static const uint8_t *read_huffman_tables(FourXContext *f,
+                                          const uint8_t * const buf,
+                                          int buf_size)
+{
     int frequency[512];
     uint8_t flag[512];
     int up[512];
@@ -581,6 +586,9 @@ static const uint8_t *read_huffman_tables(FourXContext *f, const uint8_t * const
 
         if (start <= end && ptr_end - ptr < end - start + 1 + 1)
             return NULL;
+        if (end < start || buf_size < 0)
+            return NULL;
+
         for(i=start; i<=end; i++){
             frequency[i]= *ptr++;
         }
@@ -767,25 +775,35 @@ static int decode_frame(AVCodecContext *avctx,
     AVFrame *p, temp;
     int i, frame_4cc, frame_size;
 
-    if (buf_size < 12)
+    if (buf_size < 20)
+        return AVERROR_INVALIDDATA;
+
+    if (avctx->width % 16 || avctx->height % 16) {
+        av_log(avctx, AV_LOG_ERROR,
+               "Dimensions non-multiple of 16 are invalid.\n");
         return AVERROR_INVALIDDATA;
-    frame_4cc= AV_RL32(buf);
-    if(buf_size != AV_RL32(buf+4)+8 || buf_size < 20){
-        av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d\n", buf_size, AV_RL32(buf+4));
     }
 
+    if (buf_size < AV_RL32(buf + 4) + 8) {
+        av_log(f->avctx, AV_LOG_ERROR,
+               "size mismatch %d %d\n", buf_size, AV_RL32(buf + 4));
+    }
+
+    frame_4cc = AV_RL32(buf);
+
     if(frame_4cc == AV_RL32("cfrm")){
         int free_index=-1;
-        const int data_size= buf_size - 20;
-        const int id= AV_RL32(buf+12);
-        const int whole_size= AV_RL32(buf+16);
+        int id, whole_size;
+        const int data_size = buf_size - 20;
         CFrameBuffer *cfrm;
 
+        id         = AV_RL32(buf + 12);
+        whole_size = AV_RL32(buf + 16);
+
         if (data_size < 0 || whole_size < 0){
             av_log(f->avctx, AV_LOG_ERROR, "sizes invalid\n");
             return AVERROR_INVALIDDATA;
         }
-
         for(i=0; i<CFRAME_BUFFER_COUNT; i++){
             if(f->cfrm[i].id && f->cfrm[i].id < avctx->frame_number)
                 av_log(f->avctx, AV_LOG_ERROR, "lost c frame %d\n", f->cfrm[i].id);

libavcodec/8bps.c

@@ -69,7 +69,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
         unsigned char *pixptr, *pixptr_end;
         unsigned int height = avctx->height; // Real image height
         unsigned int dlen, p, row;
-        const unsigned char *lp, *dp;
+        const unsigned char *lp, *dp, *ep;
         unsigned char count;
         unsigned int planes = c->planes;
         unsigned char *planemap = c->planemap;
@@ -84,6 +84,8 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
                 return -1;
         }
 
+        ep = encoded + buf_size;
+
         /* Set data pointer after line lengths */
         dp = encoded + planes * (height << 1);
 
@@ -95,16 +97,18 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
                 for(row = 0; row < height; row++) {
                         pixptr = c->pic.data[0] + row * c->pic.linesize[0] + planemap[p];
                         pixptr_end = pixptr + c->pic.linesize[0];
+                        if (ep - lp < row * 2 + 2)
+                            return AVERROR_INVALIDDATA;
                         dlen = av_be2ne16(*(const unsigned short *)(lp+row*2));
                         /* Decode a row of this plane */
                         while(dlen > 0) {
-                                if(dp + 1 >= buf+buf_size) return -1;
+                                if(ep - dp <= 1) return -1;
                                 if ((count = *dp++) <= 127) {
                                         count++;
                                         dlen -= count + 1;
                                         if (pixptr + count * planes > pixptr_end)
                                             break;
-                                        if(dp + count > buf+buf_size) return -1;
+                                        if(ep - dp < count) return -1;
                                         while(count--) {
                                                 *pixptr = *dp++;
                                                 pixptr += planes;

libavcodec/8svx.c

@@ -38,6 +38,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 
 /** decoder context */
 typedef struct EightSvxContext {
@@ -151,7 +152,7 @@ static int eightsvx_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     esc->frame.nb_samples = (FFMIN(MAX_FRAME_SIZE, esc->samples_size - esc->samples_idx) +avctx->channels-1)  / avctx->channels;
-    if ((ret = avctx->get_buffer(avctx, &esc->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &esc->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/aacdec.c

@@ -362,7 +362,7 @@ static int decode_pce(AVCodecContext *avctx, MPEG4AudioConfig *m4ac,
     comment_len = get_bits(gb, 8) * 8;
     if (get_bits_left(gb) < comment_len) {
         av_log(avctx, AV_LOG_ERROR, overread_err);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     skip_bits_long(gb, comment_len);
     return 0;
@@ -383,7 +383,7 @@ static av_cold int set_default_channel_config(AVCodecContext *avctx,
     if (channel_config < 1 || channel_config > 7) {
         av_log(avctx, AV_LOG_ERROR, "invalid default channel configuration (%d)\n",
                channel_config);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     /* default channel configurations:
@@ -501,20 +501,21 @@ static int decode_audio_specific_config(AACContext *ac,
                                         int sync_extension)
 {
     GetBitContext gb;
-    int i;
+    int i, ret;
 
     av_dlog(avctx, "extradata size %d\n", avctx->extradata_size);
     for (i = 0; i < avctx->extradata_size; i++)
          av_dlog(avctx, "%02x ", avctx->extradata[i]);
     av_dlog(avctx, "\n");
 
-    init_get_bits(&gb, data, bit_size);
+    if ((ret = init_get_bits(&gb, data, bit_size)) < 0)
+        return ret;
 
     if ((i = avpriv_mpeg4audio_get_config(m4ac, data, bit_size, sync_extension)) < 0)
-        return -1;
+        return AVERROR_INVALIDDATA;
     if (m4ac->sampling_index > 12) {
         av_log(avctx, AV_LOG_ERROR, "invalid sampling rate index %d\n", m4ac->sampling_index);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     skip_bits_long(&gb, i);
@@ -523,13 +524,14 @@ static int decode_audio_specific_config(AACContext *ac,
     case AOT_AAC_MAIN:
     case AOT_AAC_LC:
     case AOT_AAC_LTP:
-        if (decode_ga_specific_config(ac, avctx, &gb, m4ac, m4ac->chan_config))
-            return -1;
+        if ((ret = decode_ga_specific_config(ac, avctx, &gb,
+                                             m4ac, m4ac->chan_config)) < 0)
+            return ret;
         break;
     default:
         av_log(avctx, AV_LOG_ERROR, "Audio object type %s%d is not supported.\n",
                m4ac->sbr == 1? "SBR+" : "", m4ac->object_type);
-        return -1;
+        return AVERROR(ENOSYS);
     }
 
     av_dlog(avctx, "AOT %d chan config %d sampling index %d (%d) SBR %d PS %d\n",
@@ -600,16 +602,17 @@ static void reset_predictor_group(PredictorState *ps, int group_num)
 static av_cold int aac_decode_init(AVCodecContext *avctx)
 {
     AACContext *ac = avctx->priv_data;
+    int ret;
     float output_scale_factor;
 
     ac->avctx = avctx;
     ac->m4ac.sample_rate = avctx->sample_rate;
 
     if (avctx->extradata_size > 0) {
-        if (decode_audio_specific_config(ac, ac->avctx, &ac->m4ac,
+        if ((ret = decode_audio_specific_config(ac, ac->avctx, &ac->m4ac,
                                          avctx->extradata,
-                                         avctx->extradata_size*8, 1) < 0)
-            return -1;
+                                         avctx->extradata_size*8, 1)) < 0)
+            return ret;
     } else {
         int sr, i;
         enum ChannelPosition new_che_pos[4][MAX_ELEM_ID];
@@ -702,7 +705,7 @@ static int skip_data_stream_element(AACContext *ac, GetBitContext *gb)
 
     if (get_bits_left(gb) < 8 * count) {
         av_log(ac->avctx, AV_LOG_ERROR, overread_err);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     skip_bits_long(gb, 8 * count);
     return 0;
@@ -716,7 +719,7 @@ static int decode_prediction(AACContext *ac, IndividualChannelStream *ics,
         ics->predictor_reset_group = get_bits(gb, 5);
         if (ics->predictor_reset_group == 0 || ics->predictor_reset_group > 30) {
             av_log(ac->avctx, AV_LOG_ERROR, "Invalid Predictor Reset Group.\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
     }
     for (sfb = 0; sfb < FFMIN(ics->max_sfb, ff_aac_pred_sfb_max[ac->m4ac.sampling_index]); sfb++) {
@@ -826,20 +829,20 @@ static int decode_band_types(AACContext *ac, enum BandType band_type[120],
             int sect_band_type = get_bits(gb, 4);
             if (sect_band_type == 12) {
                 av_log(ac->avctx, AV_LOG_ERROR, "invalid band type\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             do {
                 sect_len_incr = get_bits(gb, bits);
                 sect_end += sect_len_incr;
                 if (get_bits_left(gb) < 0) {
                     av_log(ac->avctx, AV_LOG_ERROR, overread_err);
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
                 if (sect_end > ics->max_sfb) {
                     av_log(ac->avctx, AV_LOG_ERROR,
                            "Number of bands (%d) exceeds limit (%d).\n",
                            sect_end, ics->max_sfb);
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
             } while (sect_len_incr == (1 << bits) - 1);
             for (; k < sect_end; k++) {
@@ -911,7 +914,7 @@ static int decode_scalefactors(AACContext *ac, float sf[120], GetBitContext *gb,
                     if (offset[0] > 255U) {
                         av_log(ac->avctx, AV_LOG_ERROR,
                                "%s (%d) out of range.\n", sf_str[0], offset[0]);
-                        return -1;
+                        return AVERROR_INVALIDDATA;
                     }
                     sf[idx] = -ff_aac_pow2sf_tab[offset[0] - 100 + POW_SF2_ZERO];
                 }
@@ -969,7 +972,7 @@ static int decode_tns(AACContext *ac, TemporalNoiseShaping *tns,
                     av_log(ac->avctx, AV_LOG_ERROR, "TNS filter order %d is greater than maximum %d.\n",
                            tns->order[w][filt], tns_max_order);
                     tns->order[w][filt] = 0;
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
                 if (tns->order[w][filt]) {
                     tns->direction[w][filt] = get_bits1(gb);
@@ -1252,7 +1255,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
 
                                     if (b > 8) {
                                         av_log(ac->avctx, AV_LOG_ERROR, "error in spectral data, ESC overflow\n");
-                                        return -1;
+                                        return AVERROR_INVALIDDATA;
                                     }
 
                                     SKIP_BITS(re, gb, b + 1);
@@ -1395,6 +1398,7 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
     IndividualChannelStream *ics = &sce->ics;
     float *out = sce->coeffs;
     int global_gain, pulse_present = 0;
+    int ret;
 
     /* This assignment is to silence a GCC warning about the variable being used
      * uninitialized when in fact it always is.
@@ -1408,25 +1412,27 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
             return AVERROR_INVALIDDATA;
     }
 
-    if (decode_band_types(ac, sce->band_type, sce->band_type_run_end, gb, ics) < 0)
-        return -1;
-    if (decode_scalefactors(ac, sce->sf, gb, global_gain, ics, sce->band_type, sce->band_type_run_end) < 0)
-        return -1;
+    if ((ret = decode_band_types(ac, sce->band_type,
+                                 sce->band_type_run_end, gb, ics)) < 0)
+        return ret;
+    if ((ret = decode_scalefactors(ac, sce->sf, gb, global_gain, ics,
+                                   sce->band_type, sce->band_type_run_end)) < 0)
+        return ret;
 
     pulse_present = 0;
     if (!scale_flag) {
         if ((pulse_present = get_bits1(gb))) {
             if (ics->window_sequence[0] == EIGHT_SHORT_SEQUENCE) {
                 av_log(ac->avctx, AV_LOG_ERROR, "Pulse tool not allowed in eight short sequence.\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             if (decode_pulses(&pulse, gb, ics->swb_offset, ics->num_swb)) {
                 av_log(ac->avctx, AV_LOG_ERROR, "Pulse data corrupt or invalid.\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
         }
         if ((tns->present = get_bits1(gb)) && decode_tns(ac, tns, gb, ics))
-            return -1;
+            return AVERROR_INVALIDDATA;
         if (get_bits1(gb)) {
             av_log_missing_feature(ac->avctx, "SSR", 1);
             return -1;
@@ -1434,7 +1440,7 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
     }
 
     if (decode_spectrum_and_dequant(ac, out, gb, sce->sf, pulse_present, &pulse, ics, sce->band_type) < 0)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     if (ac->m4ac.object_type == AOT_AAC_MAIN && !common_window)
         apply_prediction(ac, sce);
@@ -1532,7 +1538,7 @@ static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
         ms_present = get_bits(gb, 2);
         if (ms_present == 3) {
             av_log(ac->avctx, AV_LOG_ERROR, "ms_present = 3 is reserved.\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         } else if (ms_present)
             decode_mid_side_stereo(cpe, gb, ms_present);
     }
@@ -2270,7 +2276,7 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data,
     if (samples) {
         /* get output buffer */
         ac->frame.nb_samples = samples;
-        if ((err = avctx->get_buffer(avctx, &ac->frame)) < 0) {
+        if ((err = ff_get_buffer(avctx, &ac->frame)) < 0) {
             av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
             return err;
         }
@@ -2323,7 +2329,8 @@ static int aac_decode_frame(AVCodecContext *avctx, void *data,
             return AVERROR_INVALIDDATA;
     }
 
-    init_get_bits(&gb, buf, buf_size * 8);
+    if ((err = init_get_bits(&gb, buf, buf_size * 8)) < 0)
+        return err;
 
     if ((err = aac_decode_frame_int(avctx, data, got_frame_ptr, &gb)) < 0)
         return err;
@@ -2568,7 +2575,8 @@ static int latm_decode_frame(AVCodecContext *avctx, void *out,
     int                 muxlength, err;
     GetBitContext       gb;
 
-    init_get_bits(&gb, avpkt->data, avpkt->size * 8);
+    if ((err = init_get_bits(&gb, avpkt->data, avpkt->size * 8)) < 0)
+        return err;
 
     // check for LOAS sync word
     if (get_bits(&gb, 11) != LOAS_SYNC_WORD)

libavcodec/ac3dec.c

@@ -1415,7 +1415,7 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = s->num_blocks * 256;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/adpcm.c

@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "put_bits.h"
 #include "bytestream.h"
@@ -556,7 +557,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = nb_samples;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/adx.c

@@ -47,7 +47,7 @@ int avpriv_adx_decode_header(AVCodecContext *avctx, const uint8_t *buf,
     offset = AV_RB16(buf + 2) + 4;
 
     /* if copyright string is within the provided data, validate it */
-    if (bufsize >= offset && memcmp(buf + offset - 6, "(c)CRI", 6))
+    if (bufsize >= offset && offset >= 6 && memcmp(buf + offset - 6, "(c)CRI", 6))
         return AVERROR_INVALIDDATA;
 
     /* check for encoding=3 block_size=18, sample_size=4 */

libavcodec/adxdec.c

@@ -21,6 +21,7 @@
 
 #include "libavutil/intreadwrite.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "adx.h"
 #include "get_bits.h"
 
@@ -140,7 +141,7 @@ static int adx_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = num_blocks * BLOCK_SAMPLES;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/alac.c

@@ -47,6 +47,7 @@
 
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "bytestream.h"
 #include "unary.h"
@@ -417,7 +418,7 @@ static int alac_decode_frame(AVCodecContext *avctx, void *data,
         return AVERROR_INVALIDDATA;
     }
     alac->frame.nb_samples = outputsamples;
-    if ((ret = avctx->get_buffer(avctx, &alac->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &alac->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -615,6 +616,12 @@ static int alac_set_info(ALACContext *alac)
 
     /* buffer size / 2 ? */
     alac->setinfo_max_samples_per_frame = bytestream_get_be32(&ptr);
+    if (!alac->setinfo_max_samples_per_frame ||
+        alac->setinfo_max_samples_per_frame > INT_MAX / sizeof(int32_t)) {
+        av_log(alac->avctx, AV_LOG_ERROR, "max samples per frame invalid: %u\n",
+               alac->setinfo_max_samples_per_frame);
+        return AVERROR_INVALIDDATA;
+    }
     ptr++;                          /* compatible version */
     alac->setinfo_sample_size           = *ptr++;
     alac->setinfo_rice_historymult      = *ptr++;

libavcodec/alsdec.c

@@ -30,6 +30,7 @@
 
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "unary.h"
 #include "mpeg4audio.h"
@@ -283,7 +284,7 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
     GetBitContext gb;
     uint64_t ht_size;
     int i, config_offset;
-    MPEG4AudioConfig m4ac;
+    MPEG4AudioConfig m4ac = {0};
     ALSSpecificConfig *sconf = &ctx->sconf;
     AVCodecContext *avctx    = ctx->avctx;
     uint32_t als_id, header_size, trailer_size;
@@ -294,12 +295,12 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
                                                  avctx->extradata_size * 8, 1);
 
     if (config_offset < 0)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     skip_bits_long(&gb, config_offset);
 
     if (get_bits_left(&gb) < (30 << 3))
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     // read the fixed items
     als_id                      = get_bits_long(&gb, 32);
@@ -334,7 +335,7 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
 
     // check for ALSSpecificConfig struct
     if (als_id != MKBETAG('A','L','S','\0'))
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     ctx->cur_frame_length = sconf->frame_length;
 
@@ -349,7 +350,7 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
         int chan_pos_bits = av_ceil_log2(avctx->channels);
         int bits_needed  = avctx->channels * chan_pos_bits + 7;
         if (get_bits_left(&gb) < bits_needed)
-            return -1;
+            return AVERROR_INVALIDDATA;
 
         if (!(sconf->chan_pos = av_malloc(avctx->channels * sizeof(*sconf->chan_pos))))
             return AVERROR(ENOMEM);
@@ -367,7 +368,7 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
     // read fixed header and trailer sizes,
     // if size = 0xFFFFFFFF then there is no data field!
     if (get_bits_left(&gb) < 64)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     header_size  = get_bits_long(&gb, 32);
     trailer_size = get_bits_long(&gb, 32);
@@ -381,10 +382,10 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
 
     // skip the header and trailer data
     if (get_bits_left(&gb) < ht_size)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     if (ht_size > INT32_MAX)
-        return -1;
+        return AVERROR_PATCHWELCOME;
 
     skip_bits_long(&gb, ht_size);
 
@@ -392,7 +393,7 @@ static av_cold int read_specific_config(ALSDecContext *ctx)
     // initialize CRC calculation
     if (sconf->crc_enabled) {
         if (get_bits_left(&gb) < 32)
-            return -1;
+            return AVERROR_INVALIDDATA;
 
         if (avctx->err_recognition & (AV_EF_CRCCHECK|AV_EF_CAREFUL)) {
             ctx->crc_table = av_crc_get_table(AV_CRC_32_IEEE_LE);
@@ -632,7 +633,7 @@ static int read_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
     if (bd->block_length & (sub_blocks - 1)) {
         av_log(avctx, AV_LOG_WARNING,
                "Block length is not evenly divisible by the number of subblocks.\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     sb_length = bd->block_length >> log2_sub_blocks;
@@ -963,18 +964,18 @@ static int decode_var_block_data(ALSDecContext *ctx, ALSBlockData *bd)
  */
 static int read_block(ALSDecContext *ctx, ALSBlockData *bd)
 {
+    int ret = 0;
     GetBitContext *gb        = &ctx->gb;
 
     *bd->shift_lsbs = 0;
     // read block type flag and read the samples accordingly
     if (get_bits1(gb)) {
-        if (read_var_block_data(ctx, bd))
-            return -1;
+        ret = read_var_block_data(ctx, bd);
     } else {
         read_const_block_data(ctx, bd);
     }
 
-    return 0;
+    return ret;
 }
 
 
@@ -983,12 +984,16 @@ static int read_block(ALSDecContext *ctx, ALSBlockData *bd)
 static int decode_block(ALSDecContext *ctx, ALSBlockData *bd)
 {
     unsigned int smp;
+    int ret = 0;
 
     // read block type flag and read the samples accordingly
     if (*bd->const_block)
         decode_const_block_data(ctx, bd);
-    else if (decode_var_block_data(ctx, bd))
-        return -1;
+    else
+        ret = decode_var_block_data(ctx, bd); // always return 0
+
+    if (ret < 0)
+        return ret;
 
     // TODO: read RLSLMS extension data
 
@@ -1006,14 +1011,10 @@ static int read_decode_block(ALSDecContext *ctx, ALSBlockData *bd)
 {
     int ret;
 
-    ret = read_block(ctx, bd);
-
-    if (ret)
+    if ((ret = read_block(ctx, bd)) < 0)
         return ret;
 
-    ret = decode_block(ctx, bd);
-
-    return ret;
+    return decode_block(ctx, bd);
 }
 
 
@@ -1039,6 +1040,7 @@ static int decode_blocks_ind(ALSDecContext *ctx, unsigned int ra_frame,
                              unsigned int c, const unsigned int *div_blocks,
                              unsigned int *js_blocks)
 {
+    int ret;
     unsigned int b;
     ALSBlockData bd;
 
@@ -1061,10 +1063,10 @@ static int decode_blocks_ind(ALSDecContext *ctx, unsigned int ra_frame,
     for (b = 0; b < ctx->num_blocks; b++) {
         bd.block_length     = div_blocks[b];
 
-        if (read_decode_block(ctx, &bd)) {
+        if ((ret = read_decode_block(ctx, &bd)) < 0) {
             // damaged block, write zero for the rest of the frame
             zero_remaining(b, ctx->num_blocks, div_blocks, bd.raw_samples);
-            return -1;
+            return ret;
         }
         bd.raw_samples += div_blocks[b];
         bd.ra_block     = 0;
@@ -1083,6 +1085,7 @@ static int decode_blocks(ALSDecContext *ctx, unsigned int ra_frame,
     ALSSpecificConfig *sconf = &ctx->sconf;
     unsigned int offset = 0;
     unsigned int b;
+    int ret;
     ALSBlockData bd[2];
 
     memset(bd, 0, 2 * sizeof(ALSBlockData));
@@ -1126,12 +1129,10 @@ static int decode_blocks(ALSDecContext *ctx, unsigned int ra_frame,
         bd[0].raw_other    = bd[1].raw_samples;
         bd[1].raw_other    = bd[0].raw_samples;
 
-        if(read_decode_block(ctx, &bd[0]) || read_decode_block(ctx, &bd[1])) {
-            // damaged block, write zero for the rest of the frame
-            zero_remaining(b, ctx->num_blocks, div_blocks, bd[0].raw_samples);
-            zero_remaining(b, ctx->num_blocks, div_blocks, bd[1].raw_samples);
-            return -1;
-        }
+        if ((ret = read_decode_block(ctx, &bd[0])) < 0 ||
+            (ret = read_decode_block(ctx, &bd[1])) < 0)
+            goto fail;
+
 
         // reconstruct joint-stereo blocks
         if (bd[0].js_blocks) {
@@ -1157,6 +1158,11 @@ static int decode_blocks(ALSDecContext *ctx, unsigned int ra_frame,
             sizeof(*ctx->raw_samples[c]) * sconf->max_order);
 
     return 0;
+fail:
+    // damaged block, write zero for the rest of the frame
+    zero_remaining(b, ctx->num_blocks, div_blocks, bd[0].raw_samples);
+    zero_remaining(b, ctx->num_blocks, div_blocks, bd[1].raw_samples);
+    return ret;
 }
 
 static inline int als_weighting(GetBitContext *gb, int k, int off)
@@ -1180,7 +1186,7 @@ static int read_channel_data(ALSDecContext *ctx, ALSChannelData *cd, int c)
 
         if (current->master_channel >= channels) {
             av_log(ctx->avctx, AV_LOG_ERROR, "Invalid master channel!\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
 
         if (current->master_channel != c) {
@@ -1205,7 +1211,7 @@ static int read_channel_data(ALSDecContext *ctx, ALSChannelData *cd, int c)
 
     if (entries == channels) {
         av_log(ctx->avctx, AV_LOG_ERROR, "Damaged channel data!\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     align_get_bits(gb);
@@ -1237,7 +1243,7 @@ static int revert_channel_correlation(ALSDecContext *ctx, ALSBlockData *bd,
 
     if (dep == channels) {
         av_log(ctx->avctx, AV_LOG_WARNING, "Invalid channel correlation!\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     bd->const_block = ctx->const_block + c;
@@ -1310,6 +1316,7 @@ static int read_frame_data(ALSDecContext *ctx, unsigned int ra_frame)
     unsigned int js_blocks[2];
 
     uint32_t bs_info = 0;
+    int ret;
 
     // skip the size of the ra unit if present in the frame
     if (sconf->ra_flag == RA_FLAG_FRAMES && ra_frame)
@@ -1340,13 +1347,15 @@ static int read_frame_data(ALSDecContext *ctx, unsigned int ra_frame)
                 independent_bs = 1;
 
             if (independent_bs) {
-                if (decode_blocks_ind(ctx, ra_frame, c, div_blocks, js_blocks))
-                    return -1;
-
+                ret = decode_blocks_ind(ctx, ra_frame, c,
+                                        div_blocks, js_blocks);
+                if (ret < 0)
+                    return ret;
                 independent_bs--;
             } else {
-                if (decode_blocks(ctx, ra_frame, c, div_blocks, js_blocks))
-                    return -1;
+                ret = decode_blocks(ctx, ra_frame, c, div_blocks, js_blocks);
+                if (ret < 0)
+                    return ret;
 
                 c++;
             }
@@ -1365,7 +1374,7 @@ static int read_frame_data(ALSDecContext *ctx, unsigned int ra_frame)
         for (c = 0; c < avctx->channels; c++)
             if (ctx->chan_data[c] < ctx->chan_data_buffer) {
                 av_log(ctx->avctx, AV_LOG_ERROR, "Invalid channel data!\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
 
         memset(&bd,               0, sizeof(ALSBlockData));
@@ -1378,6 +1387,11 @@ static int read_frame_data(ALSDecContext *ctx, unsigned int ra_frame)
 
         for (b = 0; b < ctx->num_blocks; b++) {
             bd.block_length = div_blocks[b];
+            if (bd.block_length <= 0) {
+                av_log(ctx->avctx, AV_LOG_WARNING,
+                       "Invalid block length %d in channel data!\n", bd.block_length);
+                continue;
+            }
 
             for (c = 0; c < avctx->channels; c++) {
                 bd.const_block = ctx->const_block + c;
@@ -1397,11 +1411,12 @@ static int read_frame_data(ALSDecContext *ctx, unsigned int ra_frame)
                     return -1;
             }
 
-            for (c = 0; c < avctx->channels; c++)
-                if (revert_channel_correlation(ctx, &bd, ctx->chan_data,
-                                               reverted_channels, offset, c))
-                    return -1;
-
+            for (c = 0; c < avctx->channels; c++) {
+                ret = revert_channel_correlation(ctx, &bd, ctx->chan_data,
+                                                 reverted_channels, offset, c);
+                if (ret < 0)
+                    return ret;
+            }
             for (c = 0; c < avctx->channels; c++) {
                 bd.const_block = ctx->const_block + c;
                 bd.shift_lsbs  = ctx->shift_lsbs + c;
@@ -1470,7 +1485,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr,
 
     /* get output buffer */
     ctx->frame.nb_samples = ctx->cur_frame_length;
-    if ((ret = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &ctx->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -1598,29 +1613,30 @@ static av_cold int decode_init(AVCodecContext *avctx)
 {
     unsigned int c;
     unsigned int channel_size;
-    int num_buffers;
+    int num_buffers, ret;
     ALSDecContext *ctx = avctx->priv_data;
     ALSSpecificConfig *sconf = &ctx->sconf;
     ctx->avctx = avctx;
 
     if (!avctx->extradata) {
         av_log(avctx, AV_LOG_ERROR, "Missing required ALS extradata.\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
-    if (read_specific_config(ctx)) {
+    if ((ret = read_specific_config(ctx)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "Reading ALSSpecificConfig failed.\n");
-        decode_end(avctx);
-        return -1;
+        goto fail;
     }
 
-    if (check_specific_config(ctx)) {
-        decode_end(avctx);
-        return -1;
+    if ((ret = check_specific_config(ctx)) < 0) {
+        goto fail;
     }
 
-    if (sconf->bgmc)
-        ff_bgmc_init(avctx, &ctx->bgmc_lut, &ctx->bgmc_lut_status);
+    if (sconf->bgmc) {
+        ret = ff_bgmc_init(avctx, &ctx->bgmc_lut, &ctx->bgmc_lut_status);
+        if (ret < 0)
+            goto fail;
+    }
 
     if (sconf->floating) {
         avctx->sample_fmt          = AV_SAMPLE_FMT_FLT;
@@ -1656,7 +1672,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
         !ctx->quant_cof_buffer       || !ctx->lpc_cof_buffer ||
         !ctx->lpc_cof_reversed_buffer) {
         av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
-        return AVERROR(ENOMEM);
+        ret = AVERROR(ENOMEM);
+        goto fail;
     }
 
     // assign quantized parcor coefficient buffers
@@ -1681,8 +1698,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
         !ctx->use_ltp  || !ctx->ltp_lag ||
         !ctx->ltp_gain || !ctx->ltp_gain_buffer) {
         av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
-        decode_end(avctx);
-        return AVERROR(ENOMEM);
+        ret = AVERROR(ENOMEM);
+        goto fail;
     }
 
     for (c = 0; c < num_buffers; c++)
@@ -1699,8 +1716,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
 
         if (!ctx->chan_data_buffer || !ctx->chan_data || !ctx->reverted_channels) {
             av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
-            decode_end(avctx);
-            return AVERROR(ENOMEM);
+            ret = AVERROR(ENOMEM);
+            goto fail;
         }
 
         for (c = 0; c < num_buffers; c++)
@@ -1721,8 +1738,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
     // allocate previous raw sample buffer
     if (!ctx->prev_raw_samples || !ctx->raw_buffer|| !ctx->raw_samples) {
         av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
-        decode_end(avctx);
-        return AVERROR(ENOMEM);
+        ret = AVERROR(ENOMEM);
+        goto fail;
     }
 
     // assign raw samples buffers
@@ -1739,8 +1756,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
                                     av_get_bytes_per_sample(avctx->sample_fmt));
         if (!ctx->crc_buffer) {
             av_log(avctx, AV_LOG_ERROR, "Allocating buffer memory failed.\n");
-            decode_end(avctx);
-            return AVERROR(ENOMEM);
+            ret = AVERROR(ENOMEM);
+            goto fail;
         }
     }
 
@@ -1750,6 +1767,10 @@ static av_cold int decode_init(AVCodecContext *avctx)
     avctx->coded_frame = &ctx->frame;
 
     return 0;
+
+fail:
+    decode_end(avctx);
+    return ret;
 }
 
 

libavcodec/amrnbdec.c

@@ -44,6 +44,7 @@
 #include <math.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "libavutil/common.h"
 #include "celp_math.h"
@@ -944,7 +945,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     p->avframe.nb_samples = AMR_BLOCK_SIZE;
-    if ((ret = avctx->get_buffer(avctx, &p->avframe)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &p->avframe)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/amrwbdec.c

@@ -27,6 +27,7 @@
 #include "libavutil/lfg.h"
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "lsp.h"
 #include "celp_math.h"
@@ -1087,7 +1088,7 @@ static int amrwb_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     ctx->avframe.nb_samples = 4 * AMRWB_SFR_SIZE_16k;
-    if ((ret = avctx->get_buffer(avctx, &ctx->avframe)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &ctx->avframe)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/ansi.c

@@ -26,6 +26,7 @@
 
 #include "libavutil/lfg.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "cga_data.h"
 
 #define ATTR_BOLD         0x01  /**< Bold/Bright-foreground (mode 1) */
@@ -222,7 +223,7 @@ static int execute_code(AVCodecContext * avctx, int c)
             if (s->frame.data[0])
                 avctx->release_buffer(avctx, &s->frame);
             avcodec_set_dimensions(avctx, width, height);
-            ret = avctx->get_buffer(avctx, &s->frame);
+            ret = ff_get_buffer(avctx, &s->frame);
             if (ret < 0) {
                 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                 return ret;

libavcodec/apedec.c

@@ -22,6 +22,7 @@
 
 #define BITSTREAM_READER_LE
 #include "avcodec.h"
+#include "internal.h"
 #include "dsputil.h"
 #include "get_bits.h"
 #include "bytestream.h"
@@ -822,7 +823,6 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
     int16_t *samples;
     int i, ret;
     int blockstodecode;
-    int bytes_used = 0;
 
     /* this should never be negative, but bad things will happen if it is, so
        check it just to make sure. */
@@ -877,7 +877,6 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
             return AVERROR_INVALIDDATA;
         }
 
-        bytes_used = buf_size;
     }
 
     if (!s->data) {
@@ -889,7 +888,7 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = blockstodecode;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -920,7 +919,7 @@ static int ape_decode_frame(AVCodecContext *avctx, void *data,
     *got_frame_ptr   = 1;
     *(AVFrame *)data = s->frame;
 
-    return bytes_used;
+    return (s->samples == 0) ? buf_size : 0;
 }
 
 static void ape_flush(AVCodecContext *avctx)

libavcodec/arm/asm.S

@@ -132,6 +132,13 @@ T       ldr             \rt, [\rn]
 T       add             \rn, \rn, \rm
 .endm
 
+.macro  ldrc_pre        cc,  rt,  rn,  rm:vararg
+A       ldr\cc          \rt, [\rn, \rm]!
+T       itt             \cc
+T       add\cc          \rn, \rn, \rm
+T       ldr\cc          \rt, [\rn]
+.endm
+
 .macro  ldrd_reg        rt,  rt2, rn,  rm
 A       ldrd            \rt, \rt2, [\rn, \rm]
 T       add             \rt, \rn, \rm

libavcodec/arm/dsputil_armv6.S

@@ -146,10 +146,11 @@ function ff_put_pixels8_y2_armv6, export=1
         eor             r7,  r5,  r7
         uadd8           r10, r10, r6
         and             r7,  r7,  r12
-        ldr_pre         r6,  r1,  r2
+        ldrc_pre        ne,  r6,  r1,  r2
         uadd8           r11, r11, r7
         strd_post       r8,  r9,  r0,  r2
-        ldr             r7,  [r1, #4]
+        it              ne
+        ldrne           r7,  [r1, #4]
         strd_post       r10, r11, r0,  r2
         bne             1b
 
@@ -198,9 +199,10 @@ function ff_put_pixels8_y2_no_rnd_armv6, export=1
         uhadd8          r9,  r5,  r7
         ldr             r5,  [r1, #4]
         uhadd8          r12, r4,  r6
-        ldr_pre         r6,  r1,  r2
+        ldrc_pre        ne,  r6,  r1,  r2
         uhadd8          r14, r5,  r7
-        ldr             r7,  [r1, #4]
+        it              ne
+        ldrne           r7,  [r1, #4]
         stm             r0,  {r8,r9}
         add             r0,  r0,  r2
         stm             r0,  {r12,r14}

libavcodec/arm/h264dsp_init_arm.c

@@ -89,7 +89,7 @@ static void ff_h264dsp_init_neon(H264DSPContext *c, const int bit_depth, const i
     c->h264_idct_dc_add     = ff_h264_idct_dc_add_neon;
     c->h264_idct_add16      = ff_h264_idct_add16_neon;
     c->h264_idct_add16intra = ff_h264_idct_add16intra_neon;
-    if (chroma_format_idc == 1)
+    if (chroma_format_idc <= 1)
         c->h264_idct_add8   = ff_h264_idct_add8_neon;
     c->h264_idct8_add       = ff_h264_idct8_add_neon;
     c->h264_idct8_dc_add    = ff_h264_idct8_dc_add_neon;

libavcodec/arm/int_neon.S

@@ -66,10 +66,10 @@ function ff_scalarproduct_int16_neon, export=1
 
 3:      vpadd.s32       d16, d0,   d1
         vpadd.s32       d17, d2,   d3
-        vpadd.s32       d10, d4,   d5
-        vpadd.s32       d11, d6,   d7
+        vpadd.s32       d18, d4,   d5
+        vpadd.s32       d19, d6,   d7
         vpadd.s32       d0,  d16,  d17
-        vpadd.s32       d1,  d10,  d11
+        vpadd.s32       d1,  d18,  d19
         vpadd.s32       d2,  d0,   d1
         vpaddl.s32      d3,  d2
         vmov.32         r0,  d3[0]
@@ -106,10 +106,10 @@ function ff_scalarproduct_and_madd_int16_neon, export=1
 
         vpadd.s32       d16, d0,   d1
         vpadd.s32       d17, d2,   d3
-        vpadd.s32       d10, d4,   d5
-        vpadd.s32       d11, d6,   d7
+        vpadd.s32       d18, d4,   d5
+        vpadd.s32       d19, d6,   d7
         vpadd.s32       d0,  d16,  d17
-        vpadd.s32       d1,  d10,  d11
+        vpadd.s32       d1,  d18,  d19
         vpadd.s32       d2,  d0,   d1
         vpaddl.s32      d3,  d2
         vmov.32         r0,  d3[0]

libavcodec/asv1.c

@@ -535,6 +535,11 @@ static av_cold int decode_init(AVCodecContext *avctx){
     int i;
     const int scale= avctx->codec_id == CODEC_ID_ASV1 ? 1 : 2;
 
+    if (avctx->extradata_size < 1) {
+        av_log(avctx, AV_LOG_ERROR, "No extradata provided\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     common_init(avctx);
     init_vlcs(a);
     ff_init_scantable(a->dsp.idct_permutation, &a->scantable, scantab);

libavcodec/atrac1.c

@@ -33,6 +33,7 @@
 #include <stdio.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "fft.h"
@@ -291,7 +292,7 @@ static int atrac1_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     q->frame.nb_samples = AT1_SU_SAMPLES;
-    if ((ret = avctx->get_buffer(avctx, &q->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &q->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/atrac3.c

@@ -37,6 +37,7 @@
 #include <stdio.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "bytestream.h"
@@ -852,7 +853,7 @@ static int atrac3_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     q->frame.nb_samples = SAMPLES_PER_FRAME;
-    if ((result = avctx->get_buffer(avctx, &q->frame)) < 0) {
+    if ((result = ff_get_buffer(avctx, &q->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return result;
     }

libavcodec/binkaudio.c

@@ -29,6 +29,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #define BITSTREAM_READER_LE
 #include "get_bits.h"
 #include "dsputil.h"
@@ -340,7 +341,7 @@ static int decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = s->block_size / avctx->channels;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/bmv.c

@@ -20,6 +20,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "bytestream.h"
 #include "libavutil/avassert.h"
 
@@ -274,7 +275,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     }
 
     c->pic.reference = 1;
-    if (avctx->get_buffer(avctx, &c->pic) < 0) {
+    if (ff_get_buffer(avctx, &c->pic) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return -1;
     }
@@ -339,7 +340,7 @@ static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = total_blocks * 32;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/bytestream.h

@@ -198,6 +198,16 @@ static av_always_inline int bytestream2_tell_p(PutByteContext *p)
     return (int)(p->buffer - p->buffer_start);
 }
 
+static av_always_inline int bytestream2_size(GetByteContext *g)
+{
+    return (int)(g->buffer_end - g->buffer_start);
+}
+
+static av_always_inline int bytestream2_size_p(PutByteContext *p)
+{
+    return (int)(p->buffer_end - p->buffer_start);
+}
+
 static av_always_inline int bytestream2_seek(GetByteContext *g,
                                              int offset,
                                              int whence)
@@ -323,6 +333,32 @@ static av_always_inline unsigned int bytestream2_get_eof(PutByteContext *p)
     return p->eof;
 }
 
+static av_always_inline unsigned int bytestream2_copy_bufferu(PutByteContext *p,
+                                                              GetByteContext *g,
+                                                              unsigned int size)
+{
+    memcpy(p->buffer, g->buffer, size);
+    p->buffer += size;
+    g->buffer += size;
+    return size;
+}
+
+static av_always_inline unsigned int bytestream2_copy_buffer(PutByteContext *p,
+                                                             GetByteContext *g,
+                                                             unsigned int size)
+{
+    int size2;
+
+    if (p->eof)
+        return 0;
+    size  = FFMIN(g->buffer_end - g->buffer, size);
+    size2 = FFMIN(p->buffer_end - p->buffer, size);
+    if (size2 != size)
+        p->eof = 1;
+
+    return bytestream2_copy_bufferu(p, g, size2);
+}
+
 static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b,
                                                            uint8_t *dst,
                                                            unsigned int size)

libavcodec/cavsdec.c

@@ -166,8 +166,8 @@ static inline int decode_residual_inter(AVSContext *h) {
 
     /* get coded block pattern */
     int cbp= get_ue_golomb(&h->s.gb);
-    if(cbp > 63U){
-        av_log(h->s.avctx, AV_LOG_ERROR, "illegal inter cbp\n");
+    if(cbp > 63 || cbp < 0){
+        av_log(h->s.avctx, AV_LOG_ERROR, "illegal inter cbp %d\n", cbp);
         return -1;
     }
     h->cbp = cbp_tab[cbp][1];
@@ -226,7 +226,7 @@ static int decode_mb_i(AVSContext *h, int cbp_code) {
     /* get coded block pattern */
     if(h->pic_type == AV_PICTURE_TYPE_I)
         cbp_code = get_ue_golomb(gb);
-    if(cbp_code > 63U){
+    if(cbp_code > 63 || cbp_code < 0 ){
         av_log(h->s.avctx, AV_LOG_ERROR, "illegal intra cbp\n");
         return -1;
     }
@@ -468,6 +468,11 @@ static int decode_pic(AVSContext *h) {
     int skip_count = -1;
     enum cavs_mb mb_type;
 
+    if (!h->top_qp) {
+        av_log(h, AV_LOG_ERROR, "No sequence header decoded yet\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     if (!s->context_initialized) {
         s->avctx->idct_algo = FF_IDCT_CAVS;
         if (MPV_common_init(s) < 0)

libavcodec/cdgraphics.c

@@ -20,6 +20,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "bytestream.h"
 
 /**
@@ -268,7 +269,7 @@ static void cdg_scroll(CDGraphicsContext *cc, uint8_t *data,
 static int cdg_decode_frame(AVCodecContext *avctx,
                             void *data, int *data_size, AVPacket *avpkt)
 {
-    const uint8_t *buf = avpkt->data;
+    GetByteContext gb;
     int buf_size       = avpkt->size;
     int ret;
     uint8_t command, inst;
@@ -285,17 +286,19 @@ static int cdg_decode_frame(AVCodecContext *avctx,
         return AVERROR(EINVAL);
     }
 
+    bytestream2_init(&gb, avpkt->data, avpkt->size);
+
     ret = avctx->reget_buffer(avctx, &cc->frame);
     if (ret) {
         av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
         return ret;
     }
 
-    command = bytestream_get_byte(&buf);
-    inst    = bytestream_get_byte(&buf);
+    command = bytestream2_get_byte(&gb);
+    inst    = bytestream2_get_byte(&gb);
     inst    &= CDG_MASK;
-    buf += 2;  /// skipping 2 unneeded bytes
-    bytestream_get_buffer(&buf, cdg_data, buf_size - CDG_HEADER_SIZE);
+    bytestream2_skip(&gb, 2);
+    bytestream2_get_buffer(&gb, cdg_data, sizeof(cdg_data));
 
     if ((command & CDG_MASK) == CDG_COMMAND) {
         switch (inst) {
@@ -337,7 +340,7 @@ static int cdg_decode_frame(AVCodecContext *avctx,
             }
 
             cdg_init_frame(&new_frame);
-            ret = avctx->get_buffer(avctx, &new_frame);
+            ret = ff_get_buffer(avctx, &new_frame);
             if (ret) {
                 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                 return ret;
@@ -354,11 +357,10 @@ static int cdg_decode_frame(AVCodecContext *avctx,
         *data_size = sizeof(AVFrame);
     } else {
         *data_size = 0;
-        buf_size   = 0;
     }
 
     *(AVFrame *) data = cc->frame;
-    return buf_size;
+    return avpkt->size;
 }
 
 static av_cold int cdg_decode_end(AVCodecContext *avctx)

libavcodec/cook.c

@@ -44,6 +44,7 @@
 
 #include "libavutil/lfg.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "bytestream.h"
@@ -991,7 +992,7 @@ static int cook_decode_frame(AVCodecContext *avctx, void *data,
     /* get output buffer */
     if (q->discarded_packets >= 2) {
         q->frame.nb_samples = q->samples_per_channel;
-        if ((ret = avctx->get_buffer(avctx, &q->frame)) < 0) {
+        if ((ret = ff_get_buffer(avctx, &q->frame)) < 0) {
             av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
             return ret;
         }

libavcodec/dca.c

@@ -32,6 +32,7 @@
 #include "libavutil/mathematics.h"
 #include "libavutil/audioconvert.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "dsputil.h"
 #include "fft.h"
 #include "get_bits.h"
@@ -577,6 +578,11 @@ static int dca_parse_frame_header(DCAContext *s)
     s->lfe               = get_bits(&s->gb, 2);
     s->predictor_history = get_bits(&s->gb, 1);
 
+    if (s->lfe > 2) {
+        av_log(s->avctx, AV_LOG_ERROR, "Invalid LFE value: %d\n", s->lfe);
+        return AVERROR_INVALIDDATA;
+    }
+
     /* TODO: check CRC */
     if (s->crc_present)
         s->header_crc    = get_bits(&s->gb, 16);
@@ -1890,7 +1896,7 @@ static int dca_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = 256 * (s->sample_blocks / 8);
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/dfa.c

@@ -21,6 +21,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "bytestream.h"
 
 #include "libavutil/imgutils.h"
@@ -325,7 +326,7 @@ static int dfa_decode_frame(AVCodecContext *avctx,
     if (s->pic.data[0])
         avctx->release_buffer(avctx, &s->pic);
 
-    if ((ret = avctx->get_buffer(avctx, &s->pic))) {
+    if ((ret = ff_get_buffer(avctx, &s->pic))) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/diracdec.c

@@ -1332,8 +1332,8 @@ static int mc_subpel(DiracContext *s, DiracBlock *block, const uint8_t *src[5],
         motion_y >>= s->chroma_y_shift;
     }
 
-    mx         = motion_x & ~(-1 << s->mv_precision);
-    my         = motion_y & ~(-1 << s->mv_precision);
+    mx         = motion_x & ~(-1U << s->mv_precision);
+    my         = motion_y & ~(-1U << s->mv_precision);
     motion_x >>= s->mv_precision;
     motion_y >>= s->mv_precision;
     /* normalize subpel coordinates to epel */

libavcodec/dnxhdenc.c

@@ -220,7 +220,7 @@ static int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias)
 
 static int dnxhd_init_rc(DNXHDEncContext *ctx)
 {
-    FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_rc, 8160*ctx->m.avctx->qmax*sizeof(RCEntry), fail);
+    FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_rc, 8160*(ctx->m.avctx->qmax + 1)*sizeof(RCEntry), fail);
     if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD)
         FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_cmp, ctx->m.mb_num*sizeof(RCCMPEntry), fail);
 

libavcodec/dpcm.c

@@ -39,6 +39,7 @@
 
 #include "libavutil/intreadwrite.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "bytestream.h"
 
 typedef struct DPCMContext {
@@ -216,7 +217,7 @@ static int dpcm_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = (out + s->channels - 1) / s->channels;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/dsicinav.c

@@ -25,6 +25,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "bytestream.h"
 #include "mathops.h"
 
@@ -108,27 +109,31 @@ static av_cold int cinvideo_decode_init(AVCodecContext *avctx)
     return 0;
 }
 
-static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst, int size)
+static void cin_apply_delta_data(const unsigned char *src, unsigned char *dst,
+                                 int size)
 {
     while (size--)
         *dst++ += *src++;
 }
 
-static int cin_decode_huffman(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
+static int cin_decode_huffman(const unsigned char *src, int src_size,
+                              unsigned char *dst, int dst_size)
 {
     int b, huff_code = 0;
     unsigned char huff_code_table[15];
-    unsigned char *dst_cur = dst;
-    unsigned char *dst_end = dst + dst_size;
+    unsigned char *dst_cur       = dst;
+    unsigned char *dst_end       = dst + dst_size;
     const unsigned char *src_end = src + src_size;
 
-    memcpy(huff_code_table, src, 15); src += 15; src_size -= 15;
+    memcpy(huff_code_table, src, 15);
+    src += 15;
+    src_size -= 15;
 
     while (src < src_end) {
         huff_code = *src++;
         if ((huff_code >> 4) == 15) {
-            b = huff_code << 4;
-            huff_code = *src++;
+            b          = huff_code << 4;
+            huff_code  = *src++;
             *dst_cur++ = b | (huff_code >> 4);
         } else
             *dst_cur++ = huff_code_table[huff_code >> 4];
@@ -147,11 +152,12 @@ static int cin_decode_huffman(const unsigned char *src, int src_size, unsigned c
     return dst_cur - dst;
 }
 
-static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
+static int cin_decode_lzss(const unsigned char *src, int src_size,
+                           unsigned char *dst, int dst_size)
 {
     uint16_t cmd;
     int i, sz, offset, code;
-    unsigned char *dst_end = dst + dst_size, *dst_start = dst;
+    unsigned char *dst_end       = dst + dst_size, *dst_start = dst;
     const unsigned char *src_end = src + src_size;
 
     while (src < src_end && dst < dst_end) {
@@ -160,13 +166,15 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char
             if (code & (1 << i)) {
                 *dst++ = *src++;
             } else {
-                cmd = AV_RL16(src); src += 2;
+                cmd  = AV_RL16(src);
+                src += 2;
                 offset = cmd >> 4;
-                if ((int) (dst - dst_start) < offset + 1)
+                if ((int)(dst - dst_start) < offset + 1)
                     return AVERROR_INVALIDDATA;
                 sz = (cmd & 0xF) + 2;
-                /* don't use memcpy/memmove here as the decoding routine (ab)uses */
-                /* buffer overlappings to repeat bytes in the destination */
+                /* don't use memcpy/memmove here as the decoding routine
+                 * (ab)uses buffer overlappings to repeat bytes in the
+                 * destination */
                 sz = FFMIN(sz, dst_end - dst);
                 while (sz--) {
                     *dst = *(dst - offset - 1);
@@ -179,10 +187,11 @@ static int cin_decode_lzss(const unsigned char *src, int src_size, unsigned char
     return 0;
 }
 
-static void cin_decode_rle(const unsigned char *src, int src_size, unsigned char *dst, int dst_size)
+static void cin_decode_rle(const unsigned char *src, int src_size,
+                           unsigned char *dst, int dst_size)
 {
     int len, code;
-    unsigned char *dst_end = dst + dst_size;
+    unsigned char *dst_end       = dst + dst_size;
     const unsigned char *src_end = src + src_size;
 
     while (src < src_end && dst < dst_end) {
@@ -205,15 +214,16 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
                                  void *data, int *data_size,
                                  AVPacket *avpkt)
 {
-    const uint8_t *buf = avpkt->data;
-    int buf_size = avpkt->size;
+    const uint8_t *buf   = avpkt->data;
+    int buf_size         = avpkt->size;
     CinVideoContext *cin = avctx->priv_data;
-    int i, y, palette_type, palette_colors_count, bitmap_frame_type, bitmap_frame_size, res = 0;
+    int i, y, palette_type, palette_colors_count,
+        bitmap_frame_type, bitmap_frame_size, res = 0;
 
-    palette_type = buf[0];
+    palette_type         = buf[0];
     palette_colors_count = AV_RL16(buf+1);
-    bitmap_frame_type = buf[3];
-    buf += 4;
+    bitmap_frame_type    = buf[3];
+    buf                 += 4;
 
     bitmap_frame_size = buf_size - 4;
 
@@ -224,46 +234,50 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
         if (palette_colors_count > 256)
             return AVERROR_INVALIDDATA;
         for (i = 0; i < palette_colors_count; ++i) {
-            cin->palette[i] = 0xFF << 24 | bytestream_get_le24(&buf);
+            cin->palette[i]    = 0xFF << 24 | bytestream_get_le24(&buf);
             bitmap_frame_size -= 3;
         }
     } else {
         for (i = 0; i < palette_colors_count; ++i) {
-            cin->palette[buf[0]] = 0xFF << 24 | AV_RL24(buf+1);
-            buf += 4;
-            bitmap_frame_size -= 4;
+            cin->palette[buf[0]] = 0xFF << 24 | AV_RL24(buf + 1);
+            buf                 += 4;
+            bitmap_frame_size   -= 4;
         }
     }
 
-    /* note: the decoding routines below assumes that surface.width = surface.pitch */
+    bitmap_frame_size = FFMIN(cin->bitmap_size, bitmap_frame_size);
+
+    /* note: the decoding routines below assumes that
+     * surface.width = surface.pitch */
     switch (bitmap_frame_type) {
     case 9:
         cin_decode_rle(buf, bitmap_frame_size,
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         break;
     case 34:
         cin_decode_rle(buf, bitmap_frame_size,
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                             cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         break;
     case 35:
         cin_decode_huffman(buf, bitmap_frame_size,
-          cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
+                           cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
         cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         break;
     case 36:
         bitmap_frame_size = cin_decode_huffman(buf, bitmap_frame_size,
-          cin->bitmap_table[CIN_INT_BMP], cin->bitmap_size);
+                                               cin->bitmap_table[CIN_INT_BMP],
+                                               cin->bitmap_size);
         cin_decode_rle(cin->bitmap_table[CIN_INT_BMP], bitmap_frame_size,
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                       cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                             cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         break;
     case 37:
         cin_decode_huffman(buf, bitmap_frame_size,
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                           cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         break;
     case 38:
         res = cin_decode_lzss(buf, bitmap_frame_size,
@@ -279,24 +293,26 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
         if (res < 0)
             return res;
         cin_apply_delta_data(cin->bitmap_table[CIN_PRE_BMP],
-          cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
+                             cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_size);
         break;
     }
 
     cin->frame.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
-    if (avctx->reget_buffer(avctx, &cin->frame)) {
-        av_log(cin->avctx, AV_LOG_ERROR, "delphinecinvideo: reget_buffer() failed to allocate a frame\n");
-        return -1;
+    if ((res = avctx->reget_buffer(avctx, &cin->frame)) < 0) {
+        av_log(cin->avctx, AV_LOG_ERROR,
+               "delphinecinvideo: reget_buffer() failed to allocate a frame\n");
+        return res;
     }
 
     memcpy(cin->frame.data[1], cin->palette, sizeof(cin->palette));
     cin->frame.palette_has_changed = 1;
     for (y = 0; y < cin->avctx->height; ++y)
         memcpy(cin->frame.data[0] + (cin->avctx->height - 1 - y) * cin->frame.linesize[0],
-          cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width,
-          cin->avctx->width);
+               cin->bitmap_table[CIN_CUR_BMP] + y * cin->avctx->width,
+               cin->avctx->width);
 
-    FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP], cin->bitmap_table[CIN_PRE_BMP]);
+    FFSWAP(uint8_t *, cin->bitmap_table[CIN_CUR_BMP],
+                      cin->bitmap_table[CIN_PRE_BMP]);
 
     *data_size = sizeof(AVFrame);
     *(AVFrame *)data = cin->frame;
@@ -340,15 +356,15 @@ static av_cold int cinaudio_decode_init(AVCodecContext *avctx)
 static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
                                  int *got_frame_ptr, AVPacket *avpkt)
 {
-    const uint8_t *buf = avpkt->data;
-    CinAudioContext *cin = avctx->priv_data;
+    const uint8_t *buf     = avpkt->data;
+    CinAudioContext *cin   = avctx->priv_data;
     const uint8_t *buf_end = buf + avpkt->size;
     int16_t *samples;
     int delta, ret;
 
     /* get output buffer */
     cin->frame.nb_samples = avpkt->size - cin->initial_decode_frame;
-    if ((ret = avctx->get_buffer(avctx, &cin->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &cin->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -357,13 +373,13 @@ static int cinaudio_decode_frame(AVCodecContext *avctx, void *data,
     delta = cin->delta;
     if (cin->initial_decode_frame) {
         cin->initial_decode_frame = 0;
-        delta = sign_extend(AV_RL16(buf), 16);
-        buf += 2;
-        *samples++ = delta;
+        delta                     = sign_extend(AV_RL16(buf), 16);
+        buf                      += 2;
+        *samples++                = delta;
     }
     while (buf < buf_end) {
-        delta += cinaudio_delta16_table[*buf++];
-        delta = av_clip_int16(delta);
+        delta     += cinaudio_delta16_table[*buf++];
+        delta      = av_clip_int16(delta);
         *samples++ = delta;
     }
     cin->delta = delta;

libavcodec/dsputil.c

@@ -1912,7 +1912,7 @@ void ff_set_cmp(DSPContext* c, me_cmp_func *cmp, int type){
 
 static void add_bytes_c(uint8_t *dst, uint8_t *src, int w){
     long i;
-    for(i=0; i<=w-(int)sizeof(long); i+=sizeof(long)){
+    for (i = 0; i <= w - (int) sizeof(long); i += sizeof(long)) {
         long a = *(long*)(src+i);
         long b = *(long*)(dst+i);
         *(long*)(dst+i) = ((a&pb_7f) + (b&pb_7f)) ^ ((a^b)&pb_80);
@@ -1937,7 +1937,7 @@ static void diff_bytes_c(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w){
         }
     }else
 #endif
-    for(i=0; i<=w-(int)sizeof(long); i+=sizeof(long)){
+    for (i = 0; i <= w - (int) sizeof(long); i += sizeof(long)) {
         long a = *(long*)(src1+i);
         long b = *(long*)(src2+i);
         *(long*)(dst+i) = ((a|pb_80) - (b&pb_7f)) ^ ((a^b^pb_80)&pb_80);

libavcodec/dxtory.c

@@ -21,6 +21,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "libavutil/intreadwrite.h"
 
 static av_cold int decode_init(AVCodecContext *avctx)
@@ -51,7 +52,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     }
 
     pic->reference = 0;
-    if ((ret = avctx->get_buffer(avctx, pic)) < 0)
+    if ((ret = ff_get_buffer(avctx, pic)) < 0)
         return ret;
 
     pic->pict_type = AV_PICTURE_TYPE_I;

libavcodec/eacmv.c

@@ -112,8 +112,8 @@ static void cmv_decode_inter(CmvContext * s, const uint8_t *buf, const uint8_t *
             int yoffset = ((buf[i] >> 4)) - 7;
             if (s->last_frame.data[0])
                 cmv_motcomp(s->frame.data[0], s->frame.linesize[0],
-                          s->last_frame.data[0], s->last_frame.linesize[0],
-                          x*4, y*4, xoffset, yoffset, s->avctx->width, s->avctx->height);
+                            s->last_frame.data[0], s->last_frame.linesize[0],
+                            x*4, y*4, xoffset, yoffset, s->avctx->width, s->avctx->height);
         }
         i++;
     }

libavcodec/eamad.c

@@ -29,6 +29,7 @@
  */
 
 #include "avcodec.h"
+#include "bytestream.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "aandcttab.h"
@@ -246,32 +247,34 @@ static int decode_frame(AVCodecContext *avctx,
 {
     const uint8_t *buf = avpkt->data;
     int buf_size       = avpkt->size;
-    const uint8_t *buf_end = buf+buf_size;
     MadContext *t     = avctx->priv_data;
+    GetByteContext gb;
     MpegEncContext *s = &t->s;
     int chunk_type;
     int inter;
 
-    if (buf_size < 17) {
-        av_log(avctx, AV_LOG_ERROR, "Input buffer too small\n");
-        *data_size = 0;
-        return -1;
-    }
+    bytestream2_init(&gb, buf, buf_size);
 
-    chunk_type = AV_RL32(&buf[0]);
+    chunk_type = bytestream2_get_le32(&gb);
     inter = (chunk_type == MADm_TAG || chunk_type == MADe_TAG);
-    buf += 8;
+    bytestream2_skip(&gb, 10);
 
     av_reduce(&avctx->time_base.num, &avctx->time_base.den,
-              AV_RL16(&buf[6]), 1000, 1<<30);
+              bytestream2_get_le16(&gb), 1000, 1<<30);
 
-    s->width  = AV_RL16(&buf[8]);
-    s->height = AV_RL16(&buf[10]);
-    calc_intra_matrix(t, buf[13]);
-    buf += 16;
+    s->width  = bytestream2_get_le16(&gb);
+    s->height = bytestream2_get_le16(&gb);
+    bytestream2_skip(&gb, 1);
+    calc_intra_matrix(t, bytestream2_get_byte(&gb));
+    bytestream2_skip(&gb, 2);
+
+    if (bytestream2_get_bytes_left(&gb) < 2) {
+        av_log(avctx, AV_LOG_ERROR, "Input data too small\n");
+        return AVERROR_INVALIDDATA;
+    }
 
     if (avctx->width != s->width || avctx->height != s->height) {
-        if((s->width * s->height)/2048*7 > buf_end-buf)
+        if((s->width * s->height)/2048*7 > bytestream2_get_bytes_left(&gb))
             return -1;
         if (av_image_check_size(s->width, s->height, 0, avctx) < 0)
             return -1;
@@ -290,13 +293,14 @@ static int decode_frame(AVCodecContext *avctx,
         }
     }
 
-    av_fast_malloc(&t->bitstream_buf, &t->bitstream_buf_size, (buf_end-buf) + FF_INPUT_BUFFER_PADDING_SIZE);
+    av_fast_malloc(&t->bitstream_buf, &t->bitstream_buf_size,
+                   bytestream2_get_bytes_left(&gb) + FF_INPUT_BUFFER_PADDING_SIZE);
     if (!t->bitstream_buf)
         return AVERROR(ENOMEM);
-    bswap16_buf(t->bitstream_buf, (const uint16_t*)buf, (buf_end-buf)/2);
-    memset((uint8_t*)t->bitstream_buf + (buf_end-buf), 0, FF_INPUT_BUFFER_PADDING_SIZE);
-    init_get_bits(&s->gb, t->bitstream_buf, 8*(buf_end-buf));
-
+    bswap16_buf(t->bitstream_buf, (const uint16_t *)(buf + bytestream2_tell(&gb)),
+                bytestream2_get_bytes_left(&gb) / 2);
+    memset((uint8_t*)t->bitstream_buf + bytestream2_get_bytes_left(&gb), 0, FF_INPUT_BUFFER_PADDING_SIZE);
+    init_get_bits(&s->gb, t->bitstream_buf, 8*(bytestream2_get_bytes_left(&gb)));
     for (s->mb_y=0; s->mb_y < (avctx->height+15)/16; s->mb_y++)
         for (s->mb_x=0; s->mb_x < (avctx->width +15)/16; s->mb_x++)
             if(decode_mb(t, inter) < 0)

libavcodec/error_resilience.c

@@ -921,6 +921,12 @@ void ff_er_frame_end(MpegEncContext *s)
         return;
     };
 
+    if (s->picture_structure == PICT_FRAME &&
+        s->current_picture.f.linesize[0] != s->current_picture_ptr->f.linesize[0]) {
+        av_log(s->avctx, AV_LOG_ERROR, "Error concealment not possible, frame not fully initialized\n");
+        return;
+    }
+
     if (s->current_picture.f.motion_val[0] == NULL) {
         av_log(s->avctx, AV_LOG_ERROR, "Warning MVs not available\n");
 

libavcodec/ffv1.c

@@ -722,6 +722,10 @@ static av_cold int init_slice_contexts(FFV1Context *f){
     int i;
 
     f->slice_count= f->num_h_slices * f->num_v_slices;
+    if (f->slice_count <= 0) {
+        av_log(f->avctx, AV_LOG_ERROR, "Invalid number of slices\n");
+        return AVERROR(EINVAL);
+    }
 
     for(i=0; i<f->slice_count; i++){
         FFV1Context *fs= av_mallocz(sizeof(*fs));
@@ -1547,20 +1551,48 @@ static int read_header(FFV1Context *f){
     memset(state, 128, sizeof(state));
 
     if(f->version < 2){
-        f->version= get_symbol(c, state, 0);
-        f->ac= f->avctx->coder_type= get_symbol(c, state, 0);
-        if(f->ac>1){
-            for(i=1; i<256; i++){
-                f->state_transition[i]= get_symbol(c, state, 1) + c->one_state[i];
+        int chroma_h_shift, chroma_v_shift, colorspace, bits_per_raw_sample;
+        int transparency;
+        unsigned v = get_symbol(c, state, 0);
+        if (v > 1) {
+            av_log(f->avctx, AV_LOG_ERROR,
+                   "invalid version %d in version 1 header\n", v);
+            return AVERROR_INVALIDDATA;
+        }
+        f->version = v;
+
+        f->ac = f->avctx->coder_type = get_symbol(c, state, 0);
+
+        if (f->ac > 1) {
+            for (i = 1; i < 256; i++)
+                f->state_transition[i] =
+                    get_symbol(c, state, 1) + c->one_state[i];
+        }
+
+        colorspace          = get_symbol(c, state, 0); //YUV cs type
+        bits_per_raw_sample = f->version > 0 ? get_symbol(c, state, 0) : f->avctx->bits_per_raw_sample;
+        get_rac(c, state); //no chroma = false
+        chroma_h_shift      = get_symbol(c, state, 0);
+        chroma_v_shift      = get_symbol(c, state, 0);
+        transparency        = get_rac(c, state);
+
+        if (f->plane_count) {
+            if (colorspace          != f->colorspace                 ||
+                bits_per_raw_sample != f->avctx->bits_per_raw_sample ||
+                chroma_h_shift      != f->chroma_h_shift             ||
+                chroma_v_shift      != f->chroma_v_shift             ||
+                transparency        != f->transparency) {
+                av_log(f->avctx, AV_LOG_ERROR, "Invalid change of global parameters\n");
+                return AVERROR_INVALIDDATA;
             }
         }
-        f->colorspace= get_symbol(c, state, 0); //YUV cs type
-        if(f->version>0)
-            f->avctx->bits_per_raw_sample= get_symbol(c, state, 0);
-        get_rac(c, state); //no chroma = false
-        f->chroma_h_shift= get_symbol(c, state, 0);
-        f->chroma_v_shift= get_symbol(c, state, 0);
-        f->transparency= get_rac(c, state);
+
+        f->colorspace                 = colorspace;
+        f->avctx->bits_per_raw_sample = bits_per_raw_sample;
+        f->chroma_h_shift             = chroma_h_shift;
+        f->chroma_v_shift             = chroma_v_shift;
+        f->transparency               = transparency;
+
         f->plane_count= 2 + f->transparency;
     }
 

libavcodec/flacdec.c

@@ -599,7 +599,7 @@ static int flac_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = s->blocksize;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/flashsv.c

@@ -389,7 +389,9 @@ static int flashsv_decode_frame(AVCodecContext *avctx, void *data,
                     s->diff_start  = get_bits(&gb, 8);
                     s->diff_height = get_bits(&gb, 8);
                     if (s->diff_start + s->diff_height > cur_blk_height) {
-                        av_log(avctx, AV_LOG_ERROR, "Block parameters invalid\n");
+                        av_log(avctx, AV_LOG_ERROR,
+                               "Block parameters invalid: %d + %d > %d\n",
+                               s->diff_start, s->diff_height, cur_blk_height);
                         return AVERROR_INVALIDDATA;
                     }
                     av_log(avctx, AV_LOG_DEBUG,

libavcodec/fraps.c

@@ -142,6 +142,11 @@ static int decode_frame(AVCodecContext *avctx,
     const int planes = 3;
     enum PixelFormat pix_fmt;
 
+    if (buf_size < 4) {
+        av_log(avctx, AV_LOG_ERROR, "Packet is too short\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     header = AV_RL32(buf);
     version = header & 0xff;
     header_size = (header & (1<<30))? 8 : 4; /* bit 30 means pad to 8 bytes */
@@ -180,7 +185,7 @@ static int decode_frame(AVCodecContext *avctx,
     }
     avctx->pix_fmt = pix_fmt;
 
-    switch(version) {
+    switch (version) {
     case 0:
     default:
         /* Fraps v0 is a reordered YUV420 */
@@ -219,6 +224,7 @@ static int decode_frame(AVCodecContext *avctx,
 
     case 1:
         /* Fraps v1 is an upside-down BGR24 */
+
         if (avctx->reget_buffer(avctx, f)) {
             av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
             return -1;

libavcodec/g722dec.c

@@ -35,6 +35,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "g722.h"
 #include "libavutil/opt.h"
@@ -96,7 +97,7 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = avpkt->size * 2;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/g726.c

@@ -448,7 +448,7 @@ static int g726_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = out_samples;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/get_bits.h

@@ -355,7 +355,7 @@ static inline int init_get_bits(GetBitContext *s, const uint8_t *buffer,
     int buffer_size;
     int ret = 0;
 
-    if (bit_size > INT_MAX - 7 || bit_size < 0) {
+    if (bit_size > INT_MAX - 7 || bit_size < 0 || !buffer) {
         buffer_size = bit_size = 0;
         buffer = NULL;
         ret = AVERROR_INVALIDDATA;

libavcodec/gsmdec.c

@@ -25,6 +25,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "msgsmdec.h"
 
@@ -72,7 +73,7 @@ static int gsm_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = avctx->frame_size;
-    if ((res = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((res = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return res;
     }

libavcodec/h264.c

@@ -106,10 +106,10 @@ int ff_h264_check_intra4x4_pred_mode(H264Context *h){
 
 int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma){
     MpegEncContext * const s = &h->s;
-    static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1};
-    static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8};
+    static const int8_t top[4]  = { LEFT_DC_PRED8x8, 1, -1, -1 };
+    static const int8_t left[5] = { TOP_DC_PRED8x8, -1,  2, -1, DC_128_PRED8x8 };
 
-    if(mode > 6U) {
+    if(mode > 3U) {
         av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y);
         return -1;
     }
@@ -1300,6 +1300,8 @@ int ff_h264_frame_start(H264Context *h){
     int i;
     const int pixel_shift = h->pixel_shift;
 
+    h->next_output_pic = NULL;
+
     if(MPV_frame_start(s, s->avctx) < 0)
         return -1;
     ff_er_frame_start(s);
@@ -1349,8 +1351,6 @@ int ff_h264_frame_start(H264Context *h){
     s->current_picture_ptr->field_poc[0]=
     s->current_picture_ptr->field_poc[1]= INT_MAX;
 
-    h->next_output_pic = NULL;
-
     assert(s->current_picture_ptr->long_ref==0);
 
     return 0;
@@ -2607,6 +2607,52 @@ int ff_h264_get_profile(SPS *sps)
     return profile;
 }
 
+static int h264_set_parameter_from_sps(H264Context *h)
+{
+    MpegEncContext *s = &h->s;
+
+    if (s->flags & CODEC_FLAG_LOW_DELAY ||
+        (h->sps.bitstream_restriction_flag &&
+         !h->sps.num_reorder_frames)) {
+        if (s->avctx->has_b_frames > 1 || h->delayed_pic[0])
+            av_log(h->s.avctx, AV_LOG_WARNING, "Delayed frames seen. "
+                   "Reenabling low delay requires a codec flush.\n");
+        else
+            s->low_delay = 1;
+    }
+
+    if (s->avctx->has_b_frames < 2)
+        s->avctx->has_b_frames = !s->low_delay;
+
+    if (s->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
+        h->cur_chroma_format_idc      != h->sps.chroma_format_idc) {
+        if (s->avctx->codec &&
+            s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU &&
+            (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "VDPAU decoding does not support video colorspace.\n");
+            return AVERROR_INVALIDDATA;
+        }
+        if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 10) {
+            s->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
+            h->cur_chroma_format_idc      = h->sps.chroma_format_idc;
+            h->pixel_shift                = h->sps.bit_depth_luma > 8;
+
+            ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma,
+                            h->sps.chroma_format_idc);
+            ff_h264_pred_init(&h->hpc, s->codec_id, h->sps.bit_depth_luma,
+                              h->sps.chroma_format_idc);
+            s->dsp.dct_bits = h->sps.bit_depth_luma > 8 ? 32 : 16;
+            dsputil_init(&s->dsp, s->avctx);
+        } else {
+            av_log(s->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
+                   h->sps.bit_depth_luma);
+            return AVERROR_INVALIDDATA;
+        }
+    }
+    return 0;
+}
+
 /**
  * Decode a slice header.
  * This will also call MPV_common_init() and frame_start() as needed.
@@ -2624,7 +2670,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     int num_ref_idx_active_override_flag;
     unsigned int slice_type, tmp, i, j;
     int default_ref_list_done = 0;
-    int last_pic_structure, last_pic_dropable;
+    int last_pic_structure, last_pic_dropable, ret;
 
     /* FIXME: 2tap qpel isn't implemented for high bit depth. */
     if((s->avctx->flags2 & CODEC_FLAG2_FAST) && !h->nal_ref_idc && !h->pixel_shift){
@@ -2672,7 +2718,14 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     h->slice_type= slice_type;
     h->slice_type_nos= slice_type & 3;
 
-    s->pict_type= h->slice_type; // to make a few old functions happy, it's wrong though
+    if (h->nal_unit_type  == NAL_IDR_SLICE &&
+        h->slice_type_nos != AV_PICTURE_TYPE_I) {
+        av_log(h->s.avctx, AV_LOG_ERROR, "A non-intra slice in an IDR NAL unit.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
+    // to make a few old functions happy, it's wrong though
+    s->pict_type = h->slice_type;
 
     pps_id= get_ue_golomb(&s->gb);
     if(pps_id>=MAX_PPS_COUNT){
@@ -2689,7 +2742,17 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
         av_log(h->s.avctx, AV_LOG_ERROR, "non-existing SPS %u referenced\n", h->pps.sps_id);
         return -1;
     }
-    h->sps = *h0->sps_buffers[h->pps.sps_id];
+
+    if (h->pps.sps_id != h->current_sps_id ||
+        h0->sps_buffers[h->pps.sps_id]->new) {
+        h0->sps_buffers[h->pps.sps_id]->new = 0;
+
+        h->current_sps_id = h->pps.sps_id;
+        h->sps            = *h0->sps_buffers[h->pps.sps_id];
+
+        if ((ret = h264_set_parameter_from_sps(h)) < 0)
+            return ret;
+    }
 
     s->avctx->profile = ff_h264_get_profile(&h->sps);
     s->avctx->level   = h->sps.level_idc;
@@ -2989,8 +3052,10 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
                h->frame_num != (h->prev_frame_num + 1) % (1 << h->sps.log2_max_frame_num)) {
             Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
             av_log(h->s.avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", h->frame_num, h->prev_frame_num);
-            if (ff_h264_frame_start(h) < 0)
+            if (ff_h264_frame_start(h) < 0) {
+                h0->s.first_field = 0;
                 return -1;
+            }
             h->prev_frame_num++;
             h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
             s->current_picture_ptr->frame_num= h->prev_frame_num;
@@ -3224,8 +3289,8 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     }
 
     h->deblocking_filter = 1;
-    h->slice_alpha_c0_offset = 52;
-    h->slice_beta_offset = 52;
+    h->slice_alpha_c0_offset = 0;
+    h->slice_beta_offset = 0;
     if( h->pps.deblocking_filter_parameters_present ) {
         tmp= get_ue_golomb_31(&s->gb);
         if(tmp > 2){
@@ -3236,12 +3301,16 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
         if(h->deblocking_filter < 2)
             h->deblocking_filter^= 1; // 1<->0
 
-        if( h->deblocking_filter ) {
-            h->slice_alpha_c0_offset += get_se_golomb(&s->gb) << 1;
-            h->slice_beta_offset     += get_se_golomb(&s->gb) << 1;
-            if(   h->slice_alpha_c0_offset > 104U
-               || h->slice_beta_offset     > 104U){
-                av_log(s->avctx, AV_LOG_ERROR, "deblocking filter parameters %d %d out of range\n", h->slice_alpha_c0_offset, h->slice_beta_offset);
+        if (h->deblocking_filter) {
+            h->slice_alpha_c0_offset = get_se_golomb(&s->gb) * 2;
+            h->slice_beta_offset     = get_se_golomb(&s->gb) * 2;
+            if (h->slice_alpha_c0_offset >  12 ||
+                h->slice_alpha_c0_offset < -12 ||
+                h->slice_beta_offset >  12     ||
+                h->slice_beta_offset < -12) {
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "deblocking filter parameters %d %d out of range\n",
+                       h->slice_alpha_c0_offset, h->slice_beta_offset);
                 return -1;
             }
         }
@@ -3270,14 +3339,12 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
             }
         }
     }
-    h->qp_thresh = 15 + 52 - FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset)
-                 - FFMAX3(0, h->pps.chroma_qp_index_offset[0], h->pps.chroma_qp_index_offset[1])
-                 + 6 * (h->sps.bit_depth_luma - 8);
-
-#if 0 //FMO
-    if( h->pps.num_slice_groups > 1  && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5)
-        slice_group_change_cycle= get_bits(&s->gb, ?);
-#endif
+    h->qp_thresh = 15 -
+                   FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) -
+                   FFMAX3(0,
+                          h->pps.chroma_qp_index_offset[0],
+                          h->pps.chroma_qp_index_offset[1]) +
+                   6 * (h->sps.bit_depth_luma - 8);
 
     h0->last_slice_type = slice_type;
     h->slice_num = ++h0->current_slice;
@@ -3338,7 +3405,8 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
                s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1],
                h->ref_count[0], h->ref_count[1],
                s->qscale,
-               h->deblocking_filter, h->slice_alpha_c0_offset/2-26, h->slice_beta_offset/2-26,
+               h->deblocking_filter,
+               h->slice_alpha_c0_offset, h->slice_beta_offset,
                h->use_weight,
                h->use_weight==1 && h->use_weight_chroma ? "c" : "",
                h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""
@@ -3821,6 +3889,12 @@ static int execute_decode_slices(H264Context *h, int context_count){
     H264Context *hx;
     int i;
 
+    if (s->mb_y >= s->mb_height) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Input contains more MB rows than the frame height.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     if (s->avctx->hwaccel || s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU)
         return 0;
     if(context_count == 1) {
@@ -4033,12 +4107,24 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             }
             break;
         case NAL_DPA:
+            if (s->flags2 & CODEC_FLAG2_CHUNKS) {
+                av_log(h->s.avctx, AV_LOG_ERROR,
+                       "Decoding in chunks is not supported for "
+                       "partitioned slices.\n");
+                return AVERROR(ENOSYS);
+            }
+
             init_get_bits(&hx->s.gb, ptr, bit_length);
             hx->intra_gb_ptr=
             hx->inter_gb_ptr= NULL;
 
-            if ((err = decode_slice_header(hx, h)) < 0)
+            if ((err = decode_slice_header(hx, h)) < 0) {
+                /* make sure data_partitioning is cleared if it was set
+                 * before, so we don't try decoding a slice without a valid
+                 * slice header later */
+                s->data_partitioning = 0;
                 break;
+            }
 
             hx->s.data_partitioning = 1;
 
@@ -4073,24 +4159,9 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
                 ff_h264_decode_seq_parameter_set(h);
             }
 
-            if (s->flags & CODEC_FLAG_LOW_DELAY ||
-                (h->sps.bitstream_restriction_flag &&
-                 !h->sps.num_reorder_frames)) {
-                if (s->avctx->has_b_frames > 1 || h->delayed_pic[0])
-                    av_log(avctx, AV_LOG_WARNING, "Delayed frames seen "
-                           "reenabling low delay requires a codec "
-                           "flush.\n");
-                else
-                    s->low_delay = 1;
-            }
-
-            if(avctx->has_b_frames < 2)
-                avctx->has_b_frames= !s->low_delay;
-
-            if (h->sps.bit_depth_luma != h->sps.bit_depth_chroma) {
-                av_log_missing_feature(s->avctx,
-                    "Different bit depth between chroma and luma", 1);
-                return AVERROR_PATCHWELCOME;
+            if (h264_set_parameter_from_sps(h) < 0) {
+                buf_index = -1;
+                goto end;
             }
             break;
         case NAL_PPS:
@@ -4115,9 +4186,10 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size){
             context_count = 0;
         }
 
-        if (err < 0)
+        if (err < 0) {
             av_log(h->s.avctx, AV_LOG_ERROR, "decode_slice_header error\n");
-        else if(err == 1) {
+            h->ref_count[0] = h->ref_count[1] = h->list_count = 0;
+        } else if (err == 1) {
             /* Slice could not be decoded in parallel mode, copy down
              * NAL unit stuff to context 0 and restart. Note that
              * rbsp_buffer is not transferred, but since we no longer
@@ -4168,6 +4240,9 @@ static int decode_frame(AVCodecContext *avctx,
 
     s->flags= avctx->flags;
     s->flags2= avctx->flags2;
+    /* reset data partitioning here, to ensure GetBitContexts from previous
+     * packets do not get used. */
+    s->data_partitioning = 0;
 
    /* end of stream, output what is still in the buffers */
     if (buf_size == 0) {

libavcodec/h264.h

@@ -206,6 +206,7 @@ typedef struct SPS{
     int bit_depth_chroma;              ///< bit_depth_chroma_minus8 + 8
     int residual_color_transform_flag; ///< residual_colour_transform_flag
     int constraint_set_flags;          ///< constraint_set[0-3]_flag
+    int new;                           ///< flag to keep track if the decoder context needs re-init due to changed SPS
 }SPS;
 
 /**
@@ -332,6 +333,7 @@ typedef struct H264Context{
     int emu_edge_width;
     int emu_edge_height;
 
+    unsigned current_sps_id; ///< id of the current SPS
     SPS sps; ///< current sps
 
     /**

libavcodec/h264_cavlc.c

@@ -770,6 +770,10 @@ decode_intra_mb:
 
         // We assume these blocks are very rare so we do not optimize it.
         align_get_bits(&s->gb);
+        if (get_bits_left(&s->gb) < mb_size) {
+            av_log(s->avctx, AV_LOG_ERROR, "Not enough data for an intra PCM block.\n");
+            return AVERROR_INVALIDDATA;
+        }
 
         // The pixels are stored in the same order as levels in h->mb array.
         for(x=0; x < mb_size; x++){

libavcodec/h264_loopfilter.c

@@ -254,8 +254,8 @@ static av_always_inline void h264_filter_mb_fast_internal(H264Context *h,
     int top_type= h->top_type;
 
     int qp_bd_offset = 6 * (h->sps.bit_depth_luma - 8);
-    int a = h->slice_alpha_c0_offset - qp_bd_offset;
-    int b = h->slice_beta_offset - qp_bd_offset;
+    int a = 52 + h->slice_alpha_c0_offset - qp_bd_offset;
+    int b = 52 + h->slice_beta_offset - qp_bd_offset;
 
     int mb_type = s->current_picture.f.mb_type[mb_xy];
     int qp      = s->current_picture.f.qscale_table[mb_xy];
@@ -715,8 +715,8 @@ void ff_h264_filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint
     av_unused int dir;
     int chroma = !(CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
     int qp_bd_offset = 6 * (h->sps.bit_depth_luma - 8);
-    int a = h->slice_alpha_c0_offset - qp_bd_offset;
-    int b = h->slice_beta_offset - qp_bd_offset;
+    int a = 52 + h->slice_alpha_c0_offset - qp_bd_offset;
+    int b = 52 + h->slice_beta_offset - qp_bd_offset;
 
     if (FRAME_MBAFF
             // and current and left pair do not have the same interlaced type

libavcodec/h264_mp4toannexb_bsf.c

@@ -156,7 +156,7 @@ pps:
             goto fail;
 
         /* prepend only to the first type 5 NAL unit of an IDR picture */
-        if (ctx->first_idr && unit_type == 5) {
+        if (ctx->first_idr && (unit_type == 5 || unit_type == 7 || unit_type == 8)) {
             if ((ret=alloc_and_copy(poutbuf, poutbuf_size,
                                avctx->extradata, avctx->extradata_size,
                                buf, nal_size)) < 0)

libavcodec/h264_ps.c

@@ -250,7 +250,9 @@ static inline int decode_vui_parameters(H264Context *h, SPS *sps){
         }
 
         if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
-            av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
+            av_log(h->s.avctx, AV_LOG_ERROR, "Clipping illegal num_reorder_frames %d\n",
+                   sps->num_reorder_frames);
+            sps->num_reorder_frames = 16;
             return -1;
         }
     }
@@ -368,6 +370,11 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
                    sps->bit_depth_luma, sps->bit_depth_chroma);
             goto fail;
         }
+        if (sps->bit_depth_chroma != sps->bit_depth_luma) {
+            av_log_missing_feature(s->avctx,
+                "Different bit depth between chroma and luma", 1);
+            goto fail;
+        }
         sps->transform_bypass = get_bits1(&s->gb);
         decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
     }else{
@@ -487,10 +494,13 @@ int ff_h264_decode_seq_parameter_set(H264Context *h){
                sps->bit_depth_luma
                );
     }
+    sps->new = 1;
 
     av_free(h->sps_buffers[sps_id]);
-    h->sps_buffers[sps_id]= sps;
-    h->sps = *sps;
+    h->sps_buffers[sps_id] = sps;
+    h->sps                 = *sps;
+    h->current_sps_id      = sps_id;
+
     return 0;
 fail:
     av_free(sps);

libavcodec/h264_refs.c

@@ -63,20 +63,22 @@ static int split_field_copy(Picture *dest, Picture *src,
     return match;
 }
 
-static int build_def_list(Picture *def, Picture **in, int len, int is_long, int sel){
+static int build_def_list(Picture *def, int def_len,
+                          Picture **in, int len, int is_long, int sel)
+{
     int i[2]={0};
     int index=0;
 
-    while(i[0]<len || i[1]<len){
+    while ((i[0] < len || i[1] < len) && index < def_len) {
         while (i[0] < len && !(in[ i[0] ] && (in[ i[0] ]->f.reference & sel)))
             i[0]++;
         while (i[1] < len && !(in[ i[1] ] && (in[ i[1] ]->f.reference & (sel^3))))
             i[1]++;
-        if(i[0] < len){
+        if (i[0] < len && index < def_len) {
             in[ i[0] ]->pic_id= is_long ? i[0] : in[ i[0] ]->frame_num;
             split_field_copy(&def[index++], in[ i[0]++ ], sel  , 1);
         }
-        if(i[1] < len){
+        if (i[1] < len && index < def_len) {
             in[ i[1] ]->pic_id= is_long ? i[1] : in[ i[1] ]->frame_num;
             split_field_copy(&def[index++], in[ i[1]++ ], sel^3, 0);
         }
@@ -124,9 +126,12 @@ int ff_h264_fill_default_ref_list(H264Context *h){
             len= add_sorted(sorted    , h->short_ref, h->short_ref_count, cur_poc, 1^list);
             len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
             assert(len<=32);
-            len= build_def_list(h->default_ref_list[list]    , sorted     , len, 0, s->picture_structure);
-            len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
-            assert(len<=32);
+
+            len  = build_def_list(h->default_ref_list[list], FF_ARRAY_ELEMS(h->default_ref_list[0]),
+                                  sorted, len, 0, s->picture_structure);
+            len += build_def_list(h->default_ref_list[list] + len,
+                                  FF_ARRAY_ELEMS(h->default_ref_list[0]) - len,
+                                  h->long_ref, 16, 1, s->picture_structure);
 
             if(len < h->ref_count[list])
                 memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
@@ -139,9 +144,12 @@ int ff_h264_fill_default_ref_list(H264Context *h){
                 FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
         }
     }else{
-        len = build_def_list(h->default_ref_list[0]    , h->short_ref, h->short_ref_count, 0, s->picture_structure);
-        len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16                , 1, s->picture_structure);
-        assert(len <= 32);
+        len  = build_def_list(h->default_ref_list[0], FF_ARRAY_ELEMS(h->default_ref_list[0]),
+                              h->short_ref, h->short_ref_count, 0, s->picture_structure);
+        len += build_def_list(h->default_ref_list[0] + len,
+                              FF_ARRAY_ELEMS(h->default_ref_list[0]) - len,
+                              h-> long_ref, 16, 1, s->picture_structure);
+
         if(len < h->ref_count[0])
             memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
     }
@@ -516,7 +524,7 @@ int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
             if(!pic){
                 if(mmco[i].opcode != MMCO_SHORT2LONG || !h->long_ref[mmco[i].long_arg]
                    || h->long_ref[mmco[i].long_arg]->frame_num != frame_num) {
-                    av_log(h->s.avctx, AV_LOG_ERROR, "mmco: unref short failure\n");
+                    av_log(h->s.avctx, h->short_ref_count ? AV_LOG_ERROR : AV_LOG_DEBUG, "mmco: unref short failure\n");
                     err = AVERROR_INVALIDDATA;
                 }
                 continue;
@@ -653,7 +661,7 @@ int ff_h264_execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){
     print_short_term(h);
     print_long_term(h);
 
-    if(err >= 0 && h->long_ref_count==0 && h->short_ref_count<=2 && h->pps.ref_count[0]<=1 + (s->picture_structure != PICT_FRAME) && s->current_picture_ptr->f.pict_type == AV_PICTURE_TYPE_I){
+    if(err >= 0 && h->long_ref_count==0 && h->short_ref_count<=2 && h->pps.ref_count[0]<=2 + (s->picture_structure != PICT_FRAME) && s->current_picture_ptr->f.pict_type == AV_PICTURE_TYPE_I){
         s->current_picture_ptr->sync |= 1;
         if(!h->s.avctx->has_b_frames)
             h->sync = 2;

libavcodec/h264_sei.c

@@ -184,6 +184,12 @@ int ff_h264_decode_sei(H264Context *h){
         if(s->avctx->debug&FF_DEBUG_STARTCODE)
             av_log(h->s.avctx, AV_LOG_DEBUG, "SEI %d len:%d\n", type, size);
 
+        if (size > get_bits_left(&s->gb) / 8) {
+            av_log(s->avctx, AV_LOG_ERROR, "SEI type %d truncated at %d\n",
+                   type, get_bits_left(&s->gb));
+            return AVERROR_INVALIDDATA;
+        }
+
         switch(type){
         case SEI_TYPE_PIC_TIMING: // Picture timing SEI
             if(decode_picture_timing(h) < 0)

libavcodec/h264dsp.c

@@ -53,13 +53,13 @@ void ff_h264dsp_init(H264DSPContext *c, const int bit_depth, const int chroma_fo
     c->h264_idct8_dc_add= FUNC(ff_h264_idct8_dc_add, depth);\
     c->h264_idct_add16     = FUNC(ff_h264_idct_add16, depth);\
     c->h264_idct8_add4     = FUNC(ff_h264_idct8_add4, depth);\
-    if (chroma_format_idc == 1)\
+    if (chroma_format_idc <= 1)\
         c->h264_idct_add8  = FUNC(ff_h264_idct_add8, depth);\
     else\
         c->h264_idct_add8  = FUNC(ff_h264_idct_add8_422, depth);\
     c->h264_idct_add16intra= FUNC(ff_h264_idct_add16intra, depth);\
     c->h264_luma_dc_dequant_idct= FUNC(ff_h264_luma_dc_dequant_idct, depth);\
-    if (chroma_format_idc == 1)\
+    if (chroma_format_idc <= 1)\
         c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma_dc_dequant_idct, depth);\
     else\
         c->h264_chroma_dc_dequant_idct= FUNC(ff_h264_chroma422_dc_dequant_idct, depth);\
@@ -80,20 +80,20 @@ void ff_h264dsp_init(H264DSPContext *c, const int bit_depth, const int chroma_fo
     c->h264_h_loop_filter_luma_intra= FUNC(h264_h_loop_filter_luma_intra, depth);\
     c->h264_h_loop_filter_luma_mbaff_intra= FUNC(h264_h_loop_filter_luma_mbaff_intra, depth);\
     c->h264_v_loop_filter_chroma= FUNC(h264_v_loop_filter_chroma, depth);\
-    if (chroma_format_idc == 1)\
+    if (chroma_format_idc <= 1)\
         c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma, depth);\
     else\
         c->h264_h_loop_filter_chroma= FUNC(h264_h_loop_filter_chroma422, depth);\
-    if (chroma_format_idc == 1)\
+    if (chroma_format_idc <= 1)\
         c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma_mbaff, depth);\
     else\
         c->h264_h_loop_filter_chroma_mbaff= FUNC(h264_h_loop_filter_chroma422_mbaff, depth);\
     c->h264_v_loop_filter_chroma_intra= FUNC(h264_v_loop_filter_chroma_intra, depth);\
-    if (chroma_format_idc == 1)\
+    if (chroma_format_idc <= 1)\
         c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma_intra, depth);\
     else\
         c->h264_h_loop_filter_chroma_intra= FUNC(h264_h_loop_filter_chroma422_intra, depth);\
-    if (chroma_format_idc == 1)\
+    if (chroma_format_idc <= 1)\
         c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma_mbaff_intra, depth);\
     else\
         c->h264_h_loop_filter_chroma_mbaff_intra= FUNC(h264_h_loop_filter_chroma422_mbaff_intra, depth);\

libavcodec/h264pred.c

@@ -434,7 +434,7 @@ void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, co
     h->pred8x8l[TOP_DC_PRED         ]= FUNCC(pred8x8l_top_dc              , depth);\
     h->pred8x8l[DC_128_PRED         ]= FUNCC(pred8x8l_128_dc              , depth);\
 \
-    if (chroma_format_idc == 1) {\
+    if (chroma_format_idc <= 1) {\
         h->pred8x8[VERT_PRED8x8   ]= FUNCC(pred8x8_vertical               , depth);\
         h->pred8x8[HOR_PRED8x8    ]= FUNCC(pred8x8_horizontal             , depth);\
     } else {\
@@ -442,7 +442,7 @@ void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, co
         h->pred8x8[HOR_PRED8x8    ]= FUNCC(pred8x16_horizontal            , depth);\
     }\
     if (codec_id != CODEC_ID_VP8) {\
-        if (chroma_format_idc == 1) {\
+        if (chroma_format_idc <= 1) {\
             h->pred8x8[PLANE_PRED8x8]= FUNCC(pred8x8_plane                , depth);\
         } else {\
             h->pred8x8[PLANE_PRED8x8]= FUNCC(pred8x16_plane               , depth);\
@@ -450,7 +450,7 @@ void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, co
     } else\
         h->pred8x8[PLANE_PRED8x8]= FUNCD(pred8x8_tm_vp8);\
     if(codec_id != CODEC_ID_RV40 && codec_id != CODEC_ID_VP8){\
-        if (chroma_format_idc == 1) {\
+        if (chroma_format_idc <= 1) {\
             h->pred8x8[DC_PRED8x8     ]= FUNCC(pred8x8_dc                     , depth);\
             h->pred8x8[LEFT_DC_PRED8x8]= FUNCC(pred8x8_left_dc                , depth);\
             h->pred8x8[TOP_DC_PRED8x8 ]= FUNCC(pred8x8_top_dc                 , depth);\
@@ -476,7 +476,7 @@ void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, co
             h->pred8x8[DC_129_PRED8x8]= FUNCC(pred8x8_129_dc              , depth);\
         }\
     }\
-    if (chroma_format_idc == 1) {\
+    if (chroma_format_idc <= 1) {\
         h->pred8x8[DC_128_PRED8x8 ]= FUNCC(pred8x8_128_dc                 , depth);\
     } else {\
         h->pred8x8[DC_128_PRED8x8 ]= FUNCC(pred8x16_128_dc                , depth);\
@@ -510,7 +510,7 @@ void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, co
     h->pred4x4_add  [ HOR_PRED   ]= FUNCC(pred4x4_horizontal_add          , depth);\
     h->pred8x8l_add [VERT_PRED   ]= FUNCC(pred8x8l_vertical_add           , depth);\
     h->pred8x8l_add [ HOR_PRED   ]= FUNCC(pred8x8l_horizontal_add         , depth);\
-    if (chroma_format_idc == 1) {\
+    if (chroma_format_idc <= 1) {\
     h->pred8x8_add  [VERT_PRED8x8]= FUNCC(pred8x8_vertical_add            , depth);\
     h->pred8x8_add  [ HOR_PRED8x8]= FUNCC(pred8x8_horizontal_add          , depth);\
     } else {\

libavcodec/huffyuv.c

@@ -302,10 +302,12 @@ static void generate_len_table(uint8_t *dst, const uint64_t *stats){
 }
 #endif /* CONFIG_HUFFYUV_ENCODER || CONFIG_FFVHUFF_ENCODER */
 
-static void generate_joint_tables(HYuvContext *s){
+static int generate_joint_tables(HYuvContext *s){
     uint16_t symbols[1<<VLC_BITS];
     uint16_t bits[1<<VLC_BITS];
     uint8_t len[1<<VLC_BITS];
+    int ret;
+
     if(s->bitstream_bpp < 24){
         int p, i, y, u;
         for(p=0; p<3; p++){
@@ -327,7 +329,9 @@ static void generate_joint_tables(HYuvContext *s){
                 }
             }
             ff_free_vlc(&s->vlc[3+p]);
-            ff_init_vlc_sparse(&s->vlc[3+p], VLC_BITS, i, len, 1, 1, bits, 2, 2, symbols, 2, 2, 0);
+            if ((ret = ff_init_vlc_sparse(&s->vlc[3 + p], VLC_BITS, i, len, 1, 1,
+                                          bits, 2, 2, symbols, 2, 2, 0)) < 0)
+                return ret;
         }
     }else{
         uint8_t (*map)[4] = (uint8_t(*)[4])s->pix_bgr_map;
@@ -369,29 +373,33 @@ static void generate_joint_tables(HYuvContext *s){
             }
         }
         ff_free_vlc(&s->vlc[3]);
-        init_vlc(&s->vlc[3], VLC_BITS, i, len, 1, 1, bits, 2, 2, 0);
+        if ((ret = init_vlc(&s->vlc[3], VLC_BITS, i, len, 1, 1,
+                            bits, 2, 2, 0)) < 0)
+            return ret;
     }
+    return 0;
 }
 
 static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length){
     GetBitContext gb;
-    int i;
-    int ret;
+    int i, ret;
 
-    init_get_bits(&gb, src, length*8);
+    if ((ret = init_get_bits(&gb, src, length * 8)) < 0)
+        return ret;
 
     for(i=0; i<3; i++){
-        if(read_len_table(s->len[i], &gb)<0)
-            return -1;
-        if(generate_bits_table(s->bits[i], s->len[i])<0){
-            return -1;
-        }
+        if ((ret = read_len_table(s->len[i], &gb)) < 0)
+            return ret;
+        if ((ret = generate_bits_table(s->bits[i], s->len[i])) < 0)
+            return ret;
         ff_free_vlc(&s->vlc[i]);
-        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0)) < 0)
+        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
+                            s->bits[i], 4, 4, 0)) < 0)
             return ret;
     }
 
-    generate_joint_tables(s);
+    if ((ret = generate_joint_tables(s)) < 0)
+        return ret;
 
     return (get_bits_count(&gb)+7)/8;
 }
@@ -399,15 +407,18 @@ static int read_huffman_tables(HYuvContext *s, const uint8_t *src, int length){
 static int read_old_huffman_tables(HYuvContext *s){
 #if 1
     GetBitContext gb;
-    int i;
-    int ret;
+    int i, ret;
 
-    init_get_bits(&gb, classic_shift_luma, classic_shift_luma_table_size*8);
-    if(read_len_table(s->len[0], &gb)<0)
-        return -1;
-    init_get_bits(&gb, classic_shift_chroma, classic_shift_chroma_table_size*8);
-    if(read_len_table(s->len[1], &gb)<0)
-        return -1;
+    if ((ret = init_get_bits(&gb, classic_shift_luma,
+                             classic_shift_luma_table_size * 8)) < 0)
+        return ret;
+    if ((ret = read_len_table(s->len[0], &gb)) < 0)
+        return ret;
+    if ((ret = init_get_bits(&gb, classic_shift_chroma,
+                             classic_shift_chroma_table_size * 8)) < 0)
+        return ret;
+    if ((ret = read_len_table(s->len[1], &gb)) < 0)
+        return ret;
 
     for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma  [i];
     for(i=0; i<256; i++) s->bits[1][i] = classic_add_chroma[i];
@@ -421,11 +432,13 @@ static int read_old_huffman_tables(HYuvContext *s){
 
     for(i=0; i<3; i++){
         ff_free_vlc(&s->vlc[i]);
-        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1, s->bits[i], 4, 4, 0)) < 0)
+        if ((ret = init_vlc(&s->vlc[i], VLC_BITS, 256, s->len[i], 1, 1,
+                            s->bits[i], 4, 4, 0)) < 0)
             return ret;
     }
 
-    generate_joint_tables(s);
+    if ((ret = generate_joint_tables(s)) < 0)
+        return ret;
 
     return 0;
 #else
@@ -465,6 +478,7 @@ static av_cold int common_init(AVCodecContext *avctx){
 static av_cold int decode_init(AVCodecContext *avctx)
 {
     HYuvContext *s = avctx->priv_data;
+    int ret;
 
     common_init(avctx);
     memset(s->vlc, 0, 3*sizeof(VLC));
@@ -500,8 +514,9 @@ s->bgr32=1;
         s->interlaced= (interlace==1) ? 1 : (interlace==2) ? 0 : s->interlaced;
         s->context= ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
 
-        if(read_huffman_tables(s, ((uint8_t*)avctx->extradata)+4, avctx->extradata_size-4) < 0)
-            return -1;
+        if ((ret = read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
+                                       avctx->extradata_size - 4)) < 0)
+            return ret;
     }else{
         switch(avctx->bits_per_coded_sample&7){
         case 1:
@@ -528,8 +543,8 @@ s->bgr32=1;
         s->bitstream_bpp= avctx->bits_per_coded_sample & ~7;
         s->context= 0;
 
-        if(read_old_huffman_tables(s) < 0)
-            return -1;
+        if ((ret = read_old_huffman_tables(s)) < 0)
+            return ret;
     }
 
     switch(s->bitstream_bpp){
@@ -555,6 +570,13 @@ s->bgr32=1;
         return AVERROR_INVALIDDATA;
     }
 
+    if (s->predictor == MEDIAN && avctx->pix_fmt == PIX_FMT_YUV422P &&
+        avctx->width % 4) {
+        av_log(avctx, AV_LOG_ERROR, "width must be multiple of 4 "
+               "for this combination of colorspace and predictor type.\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     alloc_temp(s);
 
 //    av_log(NULL, AV_LOG_DEBUG, "pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_coded_sample, s->interlaced);
@@ -565,7 +587,7 @@ s->bgr32=1;
 static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
 {
     HYuvContext *s = avctx->priv_data;
-    int i;
+    int i, ret;
 
     avctx->coded_frame= &s->picture;
     alloc_temp(s);
@@ -574,11 +596,12 @@ static av_cold int decode_init_thread_copy(AVCodecContext *avctx)
         s->vlc[i].table = NULL;
 
     if(s->version==2){
-        if(read_huffman_tables(s, ((uint8_t*)avctx->extradata)+4, avctx->extradata_size) < 0)
-            return -1;
+        if ((ret = read_huffman_tables(s, ((uint8_t*)avctx->extradata) + 4,
+                                       avctx->extradata_size)) < 0)
+            return ret;
     }else{
-        if(read_old_huffman_tables(s) < 0)
-            return -1;
+        if ((ret = read_old_huffman_tables(s)) < 0)
+            return ret;
     }
 
     return 0;
@@ -1001,7 +1024,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     const int height= s->height;
     int fake_ystride, fake_ustride, fake_vstride;
     AVFrame * const p= &s->picture;
-    int table_size= 0;
+    int table_size = 0, ret;
 
     AVFrame *picture = data;
 
@@ -1016,21 +1039,23 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
         ff_thread_release_buffer(avctx, p);
 
     p->reference= 0;
-    if(ff_thread_get_buffer(avctx, p) < 0){
+    if ((ret = ff_thread_get_buffer(avctx, p)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
+        return ret;
     }
 
     if(s->context){
         table_size = read_huffman_tables(s, s->bitstream_buffer, buf_size);
         if(table_size < 0)
-            return -1;
+            return table_size;
     }
 
     if((unsigned)(buf_size-table_size) >= INT_MAX/8)
         return -1;
 
-    init_get_bits(&s->gb, s->bitstream_buffer+table_size, (buf_size-table_size)*8);
+    if ((ret = init_get_bits(&s->gb, s->bitstream_buffer + table_size,
+                             (buf_size - table_size) * 8)) < 0)
+        return ret;
 
     fake_ystride= s->interlaced ? p->linesize[0]*2  : p->linesize[0];
     fake_ustride= s->interlaced ? p->linesize[1]*2  : p->linesize[1];

libavcodec/iff.c

@@ -28,6 +28,7 @@
 #include "libavutil/imgutils.h"
 #include "bytestream.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 
 // TODO: masking bits
@@ -479,7 +480,7 @@ static int decode_frame_ilbm(AVCodecContext *avctx,
             av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
             return res;
         }
-    } else if ((res = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    } else if ((res = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return res;
     } else if (avctx->bits_per_coded_sample <= 8 && avctx->pix_fmt == PIX_FMT_PAL8) {
@@ -579,7 +580,7 @@ static int decode_frame_byterun1(AVCodecContext *avctx,
             av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
             return res;
         }
-    } else if ((res = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    } else if ((res = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return res;
     } else if (avctx->pix_fmt == PIX_FMT_PAL8) {

libavcodec/imc.c

@@ -36,6 +36,7 @@
 #include <stdio.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "fft.h"
@@ -680,7 +681,7 @@ static int imc_decode_frame(AVCodecContext * avctx, void *data,
 
     /* get output buffer */
     q->frame.nb_samples = COEFFS;
-    if ((ret = avctx->get_buffer(avctx, &q->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &q->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/indeo3.c

@@ -32,6 +32,7 @@
 #include "libavutil/imgutils.h"
 #include "libavutil/intreadwrite.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "dsputil.h"
 #include "bytestream.h"
 #include "get_bits.h"
@@ -1097,7 +1098,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
         avctx->release_buffer(avctx, &ctx->frame);
 
     ctx->frame.reference = 0;
-    if ((res = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
+    if ((res = ff_get_buffer(avctx, &ctx->frame)) < 0) {
         av_log(ctx->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return res;
     }

libavcodec/indeo4.c

@@ -211,6 +211,7 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
     if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
         if (ff_ivi_init_planes(ctx->planes, &pic_conf)) {
             av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
+            ctx->pic_conf.luma_bands = 0;
             return AVERROR(ENOMEM);
         }
 
@@ -348,6 +349,13 @@ static int decode_band_hdr(IVI45DecContext *ctx, IVIBandDesc *band,
             band->inv_transform = transforms[transform_id].inv_trans;
             band->dc_transform  = transforms[transform_id].dc_trans;
             band->is_2d_trans   = transforms[transform_id].is_2d_trans;
+            if (transform_id < 10)
+                band->transform_size = 8;
+            else
+                band->transform_size = 4;
+
+            if (band->blk_size != band->transform_size)
+                return AVERROR_INVALIDDATA;
 
             scan_indx = get_bits(&ctx->gb, 4);
             if (scan_indx == 15) {

libavcodec/indeo5.c

@@ -113,7 +113,7 @@ static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx)
     }
 
     /* check if picture layout was changed and reallocate buffers */
-    if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf)) {
+    if (ivi_pic_config_cmp(&pic_conf, &ctx->pic_conf) || ctx->gop_invalid) {
         result = ff_ivi_init_planes(ctx->planes, &pic_conf);
         if (result < 0) {
             av_log(avctx, AV_LOG_ERROR, "Couldn't reallocate color planes!\n");
@@ -148,39 +148,47 @@ static int decode_gop_header(IVI45DecContext *ctx, AVCodecContext *avctx)
             /* select transform function and scan pattern according to plane and band number */
             switch ((p << 2) + i) {
             case 0:
-                band->inv_transform = ff_ivi_inverse_slant_8x8;
-                band->dc_transform  = ff_ivi_dc_slant_2d;
-                band->scan          = ff_zigzag_direct;
+                band->inv_transform  = ff_ivi_inverse_slant_8x8;
+                band->dc_transform   = ff_ivi_dc_slant_2d;
+                band->scan           = ff_zigzag_direct;
+                band->transform_size = 8;
                 break;
 
             case 1:
-                band->inv_transform = ff_ivi_row_slant8;
-                band->dc_transform  = ff_ivi_dc_row_slant;
-                band->scan          = ff_ivi_vertical_scan_8x8;
+                band->inv_transform  = ff_ivi_row_slant8;
+                band->dc_transform   = ff_ivi_dc_row_slant;
+                band->scan           = ff_ivi_vertical_scan_8x8;
+                band->transform_size = 8;
                 break;
 
             case 2:
-                band->inv_transform = ff_ivi_col_slant8;
-                band->dc_transform  = ff_ivi_dc_col_slant;
-                band->scan          = ff_ivi_horizontal_scan_8x8;
+                band->inv_transform  = ff_ivi_col_slant8;
+                band->dc_transform   = ff_ivi_dc_col_slant;
+                band->scan           = ff_ivi_horizontal_scan_8x8;
+                band->transform_size = 8;
                 break;
 
             case 3:
-                band->inv_transform = ff_ivi_put_pixels_8x8;
-                band->dc_transform  = ff_ivi_put_dc_pixel_8x8;
-                band->scan          = ff_ivi_horizontal_scan_8x8;
+                band->inv_transform  = ff_ivi_put_pixels_8x8;
+                band->dc_transform   = ff_ivi_put_dc_pixel_8x8;
+                band->scan           = ff_ivi_horizontal_scan_8x8;
+                band->transform_size = 8;
                 break;
 
             case 4:
-                band->inv_transform = ff_ivi_inverse_slant_4x4;
-                band->dc_transform  = ff_ivi_dc_slant_2d;
-                band->scan          = ff_ivi_direct_scan_4x4;
+                band->inv_transform  = ff_ivi_inverse_slant_4x4;
+                band->dc_transform   = ff_ivi_dc_slant_2d;
+                band->scan           = ff_ivi_direct_scan_4x4;
+                band->transform_size = 4;
                 break;
             }
 
             band->is_2d_trans = band->inv_transform == ff_ivi_inverse_slant_8x8 ||
                                 band->inv_transform == ff_ivi_inverse_slant_4x4;
 
+            if (band->transform_size != band->blk_size)
+                return AVERROR_INVALIDDATA;
+
             /* select dequant matrix according to plane and band number */
             if (!p) {
                 quant_mat = (pic_conf.luma_bands > 1) ? i+1 : 0;
@@ -311,9 +319,9 @@ static int decode_pic_hdr(IVI45DecContext *ctx, AVCodecContext *avctx)
     ctx->frame_num = get_bits(&ctx->gb, 8);
 
     if (ctx->frame_type == FRAMETYPE_INTRA) {
-        ctx->gop_invalid = 1;
         if ((ret = decode_gop_header(ctx, avctx)) < 0) {
             av_log(avctx, AV_LOG_ERROR, "Invalid GOP header, skipping frames.\n");
+            ctx->gop_invalid = 1;
             return ret;
         }
         ctx->gop_invalid = 0;

libavcodec/internal.h

@@ -136,4 +136,7 @@ int avpriv_unlock_avformat(void);
  */
 int ff_alloc_packet(AVPacket *avpkt, int size);
 
+
+int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame);
+
 #endif /* AVCODEC_INTERNAL_H */

libavcodec/ituh263dec.c

@@ -755,6 +755,8 @@ int ff_h263_decode_mb(MpegEncContext *s,
         }
 
         if(IS_DIRECT(mb_type)){
+            if (!s->pp_time)
+                return AVERROR_INVALIDDATA;
             s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
             mb_type |= ff_mpeg4_set_direct_mv(s, 0, 0);
         }else{

libavcodec/ivi_common.c

@@ -28,6 +28,7 @@
 
 #define BITSTREAM_READER_LE
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "ivi_common.h"
 #include "libavutil/common.h"
@@ -42,6 +43,26 @@ VLC ff_ivi_blk_vlc_tabs[8];
 typedef void (*ivi_mc_func) (int16_t *buf, const int16_t *ref_buf,
                              uint32_t pitch, int mc_type);
 
+static int ivi_mc(IVIBandDesc *band, ivi_mc_func mc,
+                  int offs, int mv_x, int mv_y, int mc_type)
+{
+    int ref_offs = offs + mv_y * band->pitch + mv_x;
+    int buf_size = band->pitch * band->aheight;
+    int min_size = band->pitch * (band->blk_size - 1) + band->blk_size;
+    int ref_size = (mc_type > 1) * band->pitch + (mc_type & 1);
+
+    if (offs < 0 || ref_offs < 0 || !band->ref_buf)
+        return AVERROR_INVALIDDATA;
+    if (buf_size - min_size < offs)
+        return AVERROR_INVALIDDATA;
+    if (buf_size - min_size - ref_size < ref_offs)
+        return AVERROR_INVALIDDATA;
+
+    mc(band->buf + offs, band->ref_buf + ref_offs, band->pitch, mc_type);
+
+    return 0;
+}
+
 /**
  *  Reverse "nbits" bits of the value "val" and return the result
  *  in the least significant bits.
@@ -51,9 +72,10 @@ static uint16_t inv_bits(uint16_t val, int nbits)
     uint16_t res;
 
     if (nbits <= 8) {
-        res = av_reverse[val] >> (8-nbits);
+        res = av_reverse[val] >> (8 - nbits);
     } else
-        res = ((av_reverse[val & 0xFF] << 8) + (av_reverse[val >> 8])) >> (16-nbits);
+        res = ((av_reverse[val & 0xFF] << 8) +
+               (av_reverse[val >> 8])) >> (16 - nbits);
 
     return res;
 }
@@ -103,10 +125,12 @@ void ff_ivi_init_static_vlc(void)
     for (i = 0; i < 8; i++) {
         ff_ivi_mb_vlc_tabs[i].table = table_data + i * 2 * 8192;
         ff_ivi_mb_vlc_tabs[i].table_allocated = 8192;
-        ff_ivi_create_huff_from_desc(&ff_ivi_mb_huff_desc[i],  &ff_ivi_mb_vlc_tabs[i],  1);
+        ff_ivi_create_huff_from_desc(&ff_ivi_mb_huff_desc[i],
+                                     &ff_ivi_mb_vlc_tabs[i],  1);
         ff_ivi_blk_vlc_tabs[i].table = table_data + (i * 2 + 1) * 8192;
         ff_ivi_blk_vlc_tabs[i].table_allocated = 8192;
-        ff_ivi_create_huff_from_desc(&ff_ivi_blk_huff_desc[i], &ff_ivi_blk_vlc_tabs[i], 1);
+        ff_ivi_create_huff_from_desc(&ff_ivi_blk_huff_desc[i],
+                                     &ff_ivi_blk_vlc_tabs[i], 1);
     }
     initialized_vlcs = 1;
 }
@@ -114,47 +138,48 @@ void ff_ivi_init_static_vlc(void)
 int ff_ivi_dec_huff_desc(GetBitContext *gb, int desc_coded, int which_tab,
                          IVIHuffTab *huff_tab, AVCodecContext *avctx)
 {
-    int         i, result;
+    int i, result;
     IVIHuffDesc new_huff;
 
     if (!desc_coded) {
         /* select default table */
         huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[7]
-            : &ff_ivi_mb_vlc_tabs [7];
-    } else {
-        huff_tab->tab_sel = get_bits(gb, 3);
-        if (huff_tab->tab_sel == 7) {
-            /* custom huffman table (explicitly encoded) */
-            new_huff.num_rows = get_bits(gb, 4);
-            if (!new_huff.num_rows) {
-                av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
-                return AVERROR_INVALIDDATA;
-            }
+                                    : &ff_ivi_mb_vlc_tabs [7];
+        return 0;
+    }
 
-            for (i = 0; i < new_huff.num_rows; i++)
-                new_huff.xbits[i] = get_bits(gb, 4);
-
-            /* Have we got the same custom table? Rebuild if not. */
-            if (ff_ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc)) {
-                ff_ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);
-
-                if (huff_tab->cust_tab.table)
-                    ff_free_vlc(&huff_tab->cust_tab);
-                result = ff_ivi_create_huff_from_desc(&huff_tab->cust_desc,
-                        &huff_tab->cust_tab, 0);
-                if (result) {
-                    huff_tab->cust_desc.num_rows = 0; // reset faulty description
-                    av_log(avctx, AV_LOG_ERROR,
-                           "Error while initializing custom vlc table!\n");
-                    return result;
-                }
-            }
-            huff_tab->tab = &huff_tab->cust_tab;
-        } else {
-            /* select one of predefined tables */
-            huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[huff_tab->tab_sel]
-                : &ff_ivi_mb_vlc_tabs [huff_tab->tab_sel];
+    huff_tab->tab_sel = get_bits(gb, 3);
+    if (huff_tab->tab_sel == 7) {
+        /* custom huffman table (explicitly encoded) */
+        new_huff.num_rows = get_bits(gb, 4);
+        if (!new_huff.num_rows) {
+            av_log(avctx, AV_LOG_ERROR, "Empty custom Huffman table!\n");
+            return AVERROR_INVALIDDATA;
         }
+
+        for (i = 0; i < new_huff.num_rows; i++)
+            new_huff.xbits[i] = get_bits(gb, 4);
+
+        /* Have we got the same custom table? Rebuild if not. */
+        if (ff_ivi_huff_desc_cmp(&new_huff, &huff_tab->cust_desc)) {
+            ff_ivi_huff_desc_copy(&huff_tab->cust_desc, &new_huff);
+
+            if (huff_tab->cust_tab.table)
+                ff_free_vlc(&huff_tab->cust_tab);
+            result = ff_ivi_create_huff_from_desc(&huff_tab->cust_desc,
+                    &huff_tab->cust_tab, 0);
+            if (result) {
+                huff_tab->cust_desc.num_rows = 0; // reset faulty description
+                av_log(avctx, AV_LOG_ERROR,
+                       "Error while initializing custom vlc table!\n");
+                return result;
+            }
+        }
+        huff_tab->tab = &huff_tab->cust_tab;
+    } else {
+        /* select one of predefined tables */
+        huff_tab->tab = (which_tab) ? &ff_ivi_blk_vlc_tabs[huff_tab->tab_sel]
+                                    : &ff_ivi_mb_vlc_tabs [huff_tab->tab_sel];
     }
 
     return 0;
@@ -174,12 +199,17 @@ void ff_ivi_huff_desc_copy(IVIHuffDesc *dst, const IVIHuffDesc *src)
 
 int av_cold ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
 {
-    int         p, b;
-    uint32_t    b_width, b_height, align_fac, width_aligned, height_aligned, buf_size;
+    int p, b;
+    uint32_t b_width, b_height, align_fac, width_aligned,
+             height_aligned, buf_size;
     IVIBandDesc *band;
 
     ff_ivi_free_buffers(planes);
 
+    if (cfg->pic_width < 1 || cfg->pic_height < 1 ||
+        cfg->luma_bands < 1 || cfg->chroma_bands < 1)
+        return AVERROR_INVALIDDATA;
+
     /* fill in the descriptor of the luminance plane */
     planes[0].width     = cfg->pic_width;
     planes[0].height    = cfg->pic_height;
@@ -198,8 +228,10 @@ int av_cold ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
         /* select band dimensions: if there is only one band then it
          *  has the full size, if there are several bands each of them
          *  has only half size */
-        b_width  = planes[p].num_bands == 1 ? planes[p].width  : (planes[p].width  + 1) >> 1;
-        b_height = planes[p].num_bands == 1 ? planes[p].height : (planes[p].height + 1) >> 1;
+        b_width  = planes[p].num_bands == 1 ? planes[p].width
+                                            : (planes[p].width  + 1) >> 1;
+        b_height = planes[p].num_bands == 1 ? planes[p].height
+                                            : (planes[p].height + 1) >> 1;
 
         /* luma   band buffers will be aligned on 16x16 (max macroblock size) */
         /* chroma band buffers will be aligned on   8x8 (max macroblock size) */
@@ -227,8 +259,8 @@ int av_cold ff_ivi_init_planes(IVIPlaneDesc *planes, const IVIPicConfig *cfg)
                 if (!band->bufs[2])
                     return AVERROR(ENOMEM);
             }
-
-            planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0; /* reset custom vlc */
+            /* reset custom vlc */
+            planes[p].bands[0].blk_vlc.cust_desc.num_rows = 0;
         }
     }
 
@@ -252,14 +284,51 @@ void av_cold ff_ivi_free_buffers(IVIPlaneDesc *planes)
             av_freep(&planes[p].bands[b].tiles);
         }
         av_freep(&planes[p].bands);
+        planes[p].num_bands = 0;
     }
 }
 
+static int ivi_init_tiles(IVIBandDesc *band, IVITile *ref_tile,
+                          int p, int b, int t_height, int t_width)
+{
+    int x, y;
+    IVITile *tile = band->tiles;
+
+    for (y = 0; y < band->height; y += t_height) {
+        for (x = 0; x < band->width; x += t_width) {
+            tile->xpos     = x;
+            tile->ypos     = y;
+            tile->mb_size  = band->mb_size;
+            tile->width    = FFMIN(band->width - x,  t_width);
+            tile->height   = FFMIN(band->height - y, t_height);
+            tile->is_empty = tile->data_size = 0;
+            /* calculate number of macroblocks */
+            tile->num_MBs  = IVI_MBs_PER_TILE(tile->width, tile->height,
+                                              band->mb_size);
+
+            av_freep(&tile->mbs);
+            tile->mbs = av_malloc(tile->num_MBs * sizeof(IVIMbInfo));
+            if (!tile->mbs)
+                return AVERROR(ENOMEM);
+
+            tile->ref_mbs = 0;
+            if (p || b) {
+                if (tile->num_MBs != ref_tile->num_MBs)
+                    return AVERROR_INVALIDDATA;
+                tile->ref_mbs = ref_tile->mbs;
+                ref_tile++;
+            }
+            tile++;
+        }
+    }
+
+    return 0;
+}
+
 int av_cold ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_height)
 {
-    int         p, b, x, y, x_tiles, y_tiles, t_width, t_height;
+    int         p, b, x_tiles, y_tiles, t_width, t_height, ret;
     IVIBandDesc *band;
-    IVITile     *tile, *ref_tile;
 
     for (p = 0; p < 3; p++) {
         t_width  = !p ? tile_width  : (tile_width  + 3) >> 2;
@@ -283,41 +352,14 @@ int av_cold ff_ivi_init_tiles(IVIPlaneDesc *planes, int tile_width, int tile_hei
             if (!band->tiles)
                 return AVERROR(ENOMEM);
 
-            tile = band->tiles;
-
             /* use the first luma band as reference for motion vectors
              * and quant */
-            ref_tile = planes[0].bands[0].tiles;
-
-            for (y = 0; y < band->height; y += t_height) {
-                for (x = 0; x < band->width; x += t_width) {
-                    tile->xpos     = x;
-                    tile->ypos     = y;
-                    tile->mb_size  = band->mb_size;
-                    tile->width    = FFMIN(band->width - x,  t_width);
-                    tile->height   = FFMIN(band->height - y, t_height);
-                    tile->is_empty = tile->data_size = 0;
-                    /* calculate number of macroblocks */
-                    tile->num_MBs  = IVI_MBs_PER_TILE(tile->width, tile->height,
-                                                      band->mb_size);
-
-                    av_freep(&tile->mbs);
-                    tile->mbs = av_malloc(tile->num_MBs * sizeof(IVIMbInfo));
-                    if (!tile->mbs)
-                        return AVERROR(ENOMEM);
-
-                    tile->ref_mbs = 0;
-                    if (p || b) {
-                        tile->ref_mbs = ref_tile->mbs;
-                        ref_tile++;
-                    }
-
-                    tile++;
-                }
-            }
-
-        }// for b
-    }// for p
+            ret = ivi_init_tiles(band, planes[0].bands[0].tiles,
+                                 p, b, t_height, t_width);
+            if (ret < 0)
+                return ret;
+        }
+    }
 
     return 0;
 }
@@ -339,25 +381,125 @@ int ff_ivi_dec_tile_data_size(GetBitContext *gb)
     return len;
 }
 
+static int ivi_dc_transform(IVIBandDesc *band, int *prev_dc, int buf_offs,
+                            int blk_size)
+{
+    int buf_size = band->pitch * band->aheight - buf_offs;
+    int min_size = (blk_size - 1) * band->pitch + blk_size;
+
+    if (!band->dc_transform)
+        return 0;
+
+
+    if (min_size > buf_size)
+        return AVERROR_INVALIDDATA;
+
+    band->dc_transform(prev_dc, band->buf + buf_offs,
+                       band->pitch, blk_size);
+
+    return 0;
+}
+
+static int ivi_decode_coded_blocks(GetBitContext *gb, IVIBandDesc *band,
+                                   ivi_mc_func mc, int mv_x, int mv_y,
+                                   int *prev_dc, int is_intra, int mc_type,
+                                   uint32_t quant, int offs)
+{
+    const uint16_t *base_tab  = is_intra ? band->intra_base : band->inter_base;
+    RVMapDesc *rvmap = band->rv_map;
+    uint8_t col_flags[8];
+    int32_t trvec[64];
+    uint32_t sym = 0, lo, hi, q;
+    int pos, run, val;
+    int blk_size   = band->blk_size;
+    int num_coeffs = blk_size * blk_size;
+    int col_mask   = blk_size - 1;
+    int scan_pos   = -1;
+    int min_size   = band->pitch * (band->transform_size - 1) +
+                     band->transform_size;
+    int buf_size   = band->pitch * band->aheight - offs;
+
+    if (min_size > buf_size)
+        return AVERROR_INVALIDDATA;
+
+    if (!band->scan)
+        return AVERROR_INVALIDDATA;
+
+    /* zero transform vector */
+    memset(trvec, 0, num_coeffs * sizeof(trvec[0]));
+    /* zero column flags */
+    memset(col_flags, 0, sizeof(col_flags));
+    while (scan_pos <= num_coeffs) {
+        sym = get_vlc2(gb, band->blk_vlc.tab->table,
+                       IVI_VLC_BITS, 1);
+        if (sym == rvmap->eob_sym)
+            break; /* End of block */
+
+        /* Escape - run/val explicitly coded using 3 vlc codes */
+        if (sym == rvmap->esc_sym) {
+            run = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1) + 1;
+            lo  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
+            hi  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
+            /* merge them and convert into signed val */
+            val = IVI_TOSIGNED((hi << 6) | lo);
+        } else {
+            if (sym >= 256U)
+                return AVERROR_INVALIDDATA;
+
+            run = rvmap->runtab[sym];
+            val = rvmap->valtab[sym];
+        }
+
+        /* de-zigzag and dequantize */
+        scan_pos += run;
+        if (scan_pos >= num_coeffs || scan_pos < 0)
+            break;
+        pos = band->scan[scan_pos];
+
+        q = (base_tab[pos] * quant) >> 9;
+        if (q > 1)
+            val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
+        trvec[pos] = val;
+        /* track columns containing non-zero coeffs */
+        col_flags[pos & col_mask] |= !!val;
+    }
+
+    if (scan_pos < 0 || scan_pos >= num_coeffs && sym != rvmap->eob_sym)
+        return AVERROR_INVALIDDATA; /* corrupt block data */
+
+    /* undoing DC coeff prediction for intra-blocks */
+    if (is_intra && band->is_2d_trans) {
+        *prev_dc     += trvec[0];
+        trvec[0]      = *prev_dc;
+        col_flags[0] |= !!*prev_dc;
+    }
+
+    /* apply inverse transform */
+    band->inv_transform(trvec, band->buf + offs,
+                        band->pitch, col_flags);
+
+    /* apply motion compensation */
+    if (!is_intra)
+        return ivi_mc(band, mc, offs, mv_x, mv_y, mc_type);
+
+    return 0;
+}
+
 int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
 {
-    int         mbn, blk, num_blocks, num_coeffs, blk_size, scan_pos, run, val,
-                pos, is_intra, mc_type, mv_x, mv_y, col_mask;
-    uint8_t     col_flags[8];
-    int32_t     prev_dc, trvec[64];
-    uint32_t    cbp, sym, lo, hi, quant, buf_offs, q;
-    IVIMbInfo   *mb;
-    RVMapDesc   *rvmap = band->rv_map;
+    int mbn, blk, num_blocks, blk_size, ret, is_intra, mc_type = 0;
+    int mv_x = 0, mv_y = 0;
+    int32_t prev_dc;
+    uint32_t cbp, quant, buf_offs;
+    IVIMbInfo *mb;
     ivi_mc_func mc_with_delta_func, mc_no_delta_func;
-    const uint16_t  *base_tab;
-    const uint8_t   *scale_tab;
-
-    prev_dc = 0; /* init intra prediction for the DC coefficient */
+    const uint8_t *scale_tab;
 
+    /* init intra prediction for the DC coefficient */
+    prev_dc = 0;
     blk_size   = band->blk_size;
-    col_mask   = blk_size - 1; /* column mask for tracking non-zero coeffs */
-    num_blocks = (band->mb_size != blk_size) ? 4 : 1; /* number of blocks per mb */
-    num_coeffs = blk_size * blk_size;
+    /* number of blocks per mb */
+    num_blocks = (band->mb_size != blk_size) ? 4 : 1;
     if (blk_size == 8) {
         mc_with_delta_func = ff_ivi_mc_8x8_delta;
         mc_no_delta_func   = ff_ivi_mc_8x8_no_delta;
@@ -373,7 +515,6 @@ int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
 
         quant = av_clip(band->glob_quant + mb->q_delta, 0, 23);
 
-        base_tab  = is_intra ? band->intra_base  : band->inter_base;
         scale_tab = is_intra ? band->intra_scale : band->inter_scale;
         if (scale_tab)
             quant = scale_tab[quant];
@@ -396,10 +537,10 @@ int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
                 cx    = mb->mv_x &  band->is_halfpel;
                 cy    = mb->mv_y &  band->is_halfpel;
 
-                if (   mb->xpos + dmv_x < 0
-                    || mb->xpos + dmv_x + band->mb_size + cx > band->pitch
-                    || mb->ypos + dmv_y < 0
-                    || mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
+                if (mb->xpos + dmv_x < 0 ||
+                    mb->xpos + dmv_x + band->mb_size + cx > band->pitch ||
+                    mb->ypos + dmv_y < 0 ||
+                    mb->ypos + dmv_y + band->mb_size + cy > band->aheight) {
                     return AVERROR_INVALIDDATA;
                 }
             }
@@ -415,81 +556,25 @@ int ff_ivi_decode_blocks(GetBitContext *gb, IVIBandDesc *band, IVITile *tile)
             }
 
             if (cbp & 1) { /* block coded ? */
-                if (!band->scan) {
-                    av_log(NULL, AV_LOG_ERROR, "Scan pattern is not set.\n");
-                    return AVERROR_INVALIDDATA;
-                }
-
-                scan_pos = -1;
-                memset(trvec, 0, num_coeffs*sizeof(trvec[0])); /* zero transform vector */
-                memset(col_flags, 0, sizeof(col_flags));      /* zero column flags */
-
-                while (scan_pos <= num_coeffs) {
-                    sym = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
-                    if (sym == rvmap->eob_sym)
-                        break; /* End of block */
-
-                    if (sym == rvmap->esc_sym) { /* Escape - run/val explicitly coded using 3 vlc codes */
-                        run = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1) + 1;
-                        lo  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
-                        hi  = get_vlc2(gb, band->blk_vlc.tab->table, IVI_VLC_BITS, 1);
-                        val = IVI_TOSIGNED((hi << 6) | lo); /* merge them and convert into signed val */
-                    } else {
-                        if (sym >= 256U) {
-                            av_log(NULL, AV_LOG_ERROR, "Invalid sym encountered: %d.\n", sym);
-                            return AVERROR_INVALIDDATA;
-                        }
-                        run = rvmap->runtab[sym];
-                        val = rvmap->valtab[sym];
-                    }
-
-                    /* de-zigzag and dequantize */
-                    scan_pos += run;
-                    if (scan_pos >= num_coeffs)
-                        break;
-                    pos = band->scan[scan_pos];
-
-                    if (!val)
-                        av_dlog(NULL, "Val = 0 encountered!\n");
-
-                    q = (base_tab[pos] * quant) >> 9;
-                    if (q > 1)
-                        val = val * q + FFSIGN(val) * (((q ^ 1) - 1) >> 1);
-                    trvec[pos] = val;
-                    col_flags[pos & col_mask] |= !!val; /* track columns containing non-zero coeffs */
-                }// while
-
-                if (scan_pos >= num_coeffs && sym != rvmap->eob_sym)
-                    return AVERROR_INVALIDDATA; /* corrupt block data */
-
-                /* undoing DC coeff prediction for intra-blocks */
-                if (is_intra && band->is_2d_trans) {
-                    prev_dc      += trvec[0];
-                    trvec[0]      = prev_dc;
-                    col_flags[0] |= !!prev_dc;
-                }
-
-                /* apply inverse transform */
-                band->inv_transform(trvec, band->buf + buf_offs,
-                                    band->pitch, col_flags);
-
-                /* apply motion compensation */
-                if (!is_intra)
-                    mc_with_delta_func(band->buf + buf_offs,
-                                       band->ref_buf + buf_offs + mv_y * band->pitch + mv_x,
-                                       band->pitch, mc_type);
+                ret = ivi_decode_coded_blocks(gb, band, mc_with_delta_func,
+                                              mv_x, mv_y, &prev_dc, is_intra,
+                                              mc_type, quant, buf_offs);
+                if (ret < 0)
+                    return ret;
             } else {
                 /* block not coded */
                 /* for intra blocks apply the dc slant transform */
                 /* for inter - perform the motion compensation without delta */
                 if (is_intra) {
-                    if (band->dc_transform)
-                        band->dc_transform(&prev_dc, band->buf + buf_offs,
-                                           band->pitch, blk_size);
-                } else
-                    mc_no_delta_func(band->buf + buf_offs,
-                                     band->ref_buf + buf_offs + mv_y * band->pitch + mv_x,
-                                     band->pitch, mc_type);
+                    ret = ivi_dc_transform(band, &prev_dc, buf_offs, blk_size);
+                    if (ret < 0)
+                        return ret;
+                } else {
+                    ret = ivi_mc(band, mc_no_delta_func, buf_offs,
+                                 mv_x, mv_y, mc_type);
+                    if (ret < 0)
+                        return ret;
+                }
             }
 
             cbp >>= 1;
@@ -514,7 +599,7 @@ static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
                                   IVITile *tile, int32_t mv_scale)
 {
     int             x, y, need_mc, mbn, blk, num_blocks, mv_x, mv_y, mc_type;
-    int             offs, mb_offset, row_offset;
+    int             offs, mb_offset, row_offset, ret;
     IVIMbInfo       *mb, *ref_mb;
     const int16_t   *src;
     int16_t         *dst;
@@ -592,9 +677,10 @@ static int ivi_process_empty_tile(AVCodecContext *avctx, IVIBandDesc *band,
             for (blk = 0; blk < num_blocks; blk++) {
                 /* adjust block position in the buffer according with its number */
                 offs = mb->buf_offs + band->blk_size * ((blk & 1) + !!(blk & 2) * band->pitch);
-                mc_no_delta_func(band->buf + offs,
-                                 band->ref_buf + offs + mv_y * band->pitch + mv_x,
-                                 band->pitch, mc_type);
+                ret = ivi_mc(band, mc_no_delta_func, offs,
+                             mv_x, mv_y, mc_type);
+                if (ret < 0)
+                    return ret;
             }
         }
     } else {
@@ -757,7 +843,8 @@ static int decode_band(IVI45DecContext *ctx, int plane_num,
         }
     }
 
-    /* restore the selected rvmap table by applying its corrections in reverse order */
+    /* restore the selected rvmap table by applying its corrections in
+     * reverse order */
     for (i = band->num_corr-1; i >= 0; i--) {
         idx1 = band->corr[i*2];
         idx2 = band->corr[i*2+1];
@@ -770,7 +857,8 @@ static int decode_band(IVI45DecContext *ctx, int plane_num,
         uint16_t chksum = ivi_calc_band_checksum(band);
         if (chksum != band->checksum) {
             av_log(avctx, AV_LOG_ERROR,
-                   "Band checksum mismatch! Plane %d, band %d, received: %x, calculated: %x\n",
+                   "Band checksum mismatch! Plane %d, band %d, "
+                   "received: %x, calculated: %x\n",
                    band->plane, band->band_num, band->checksum, chksum);
         }
     }
@@ -807,6 +895,11 @@ int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
         return AVERROR_PATCHWELCOME;
     }
 
+    if (!ctx->planes[0].bands) {
+        av_log(avctx, AV_LOG_ERROR, "Color planes not initialized yet\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     ctx->switch_buffers(ctx);
 
     //{ START_TIMER;
@@ -837,7 +930,8 @@ int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     /* If the bidirectional mode is enabled, next I and the following P frame will */
     /* be sent together. Unfortunately the approach below seems to be the only way */
     /* to handle the B-frames mode. That's exactly the same Intel decoders do.     */
-    if (avctx->codec_id == CODEC_ID_INDEO4 && ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {
+    if (avctx->codec_id == CODEC_ID_INDEO4 &&
+        ctx->frame_type == 0/*FRAMETYPE_INTRA*/) {
         while (get_bits(&ctx->gb, 8)); // skip version string
         skip_bits_long(&ctx->gb, 64);  // skip padding, TODO: implement correct 8-bytes alignment
         if (get_bits_left(&ctx->gb) > 18 && show_bits(&ctx->gb, 18) == 0x3FFF8)
@@ -849,7 +943,7 @@ int ff_ivi_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
 
     ctx->frame.reference = 0;
     avcodec_set_dimensions(avctx, ctx->planes[0].width, ctx->planes[0].height);
-    if ((result = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
+    if ((result = ff_get_buffer(avctx, &ctx->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return result;
     }

libavcodec/ivi_common.h

@@ -162,6 +162,7 @@ typedef struct {
     int             num_tiles;      ///< number of tiles in this band
     IVITile         *tiles;         ///< array of tile descriptors
     InvTransformPtr *inv_transform;
+    int             transform_size;
     DCTransformPtr  *dc_transform;
     int             is_2d_trans;    ///< 1 indicates that the two-dimensional inverse transform is used
     int32_t         checksum;       ///< for debug purposes

libavcodec/jpeglsdec.c

@@ -143,6 +143,8 @@ static inline int ls_get_code_runterm(GetBitContext *gb, JLSState *state, int RI
         ret = ret >> 1;
     }
 
+    if(FFABS(ret) > 0xFFFF)
+        return -0x10000;
     /* update state */
     state->A[Q] += FFABS(ret) - RItype;
     ret *= state->twonear;

libavcodec/kgv1dec.c

@@ -27,6 +27,7 @@
 #include "libavutil/intreadwrite.h"
 #include "libavutil/imgutils.h"
 #include "avcodec.h"
+#include "internal.h"
 
 typedef struct {
     AVCodecContext *avctx;
@@ -70,7 +71,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPac
     maxcnt = w * h;
 
     c->cur.reference = 3;
-    if ((res = avctx->get_buffer(avctx, &c->cur)) < 0)
+    if ((res = ff_get_buffer(avctx, &c->cur)) < 0)
         return res;
     out  = (uint16_t *) c->cur.data[0];
     if (c->prev.data[0]) {

libavcodec/lagarith.c

@@ -52,6 +52,7 @@ typedef struct LagarithContext {
     int zeros;                  /**< number of consecutive zero bytes encountered */
     int zeros_rem;              /**< number of zero bytes remaining to output */
     uint8_t *rgb_planes;
+    int      rgb_planes_allocated;
     int rgb_stride;
 } LagarithContext;
 
@@ -507,13 +508,12 @@ static int lag_decode_frame(AVCodecContext *avctx,
         offs[2] = 13;
         offs[3] = AV_RL32(buf + 9);
 
+        l->rgb_stride = FFALIGN(avctx->width, 16);
+        av_fast_malloc(&l->rgb_planes, &l->rgb_planes_allocated,
+                       l->rgb_stride * avctx->height * 4 + 1);
         if (!l->rgb_planes) {
-            l->rgb_stride = FFALIGN(avctx->width, 16);
-            l->rgb_planes = av_malloc(l->rgb_stride * avctx->height * 4);
-            if (!l->rgb_planes) {
-                av_log(avctx, AV_LOG_ERROR, "cannot allocate temporary buffer\n");
-                return AVERROR(ENOMEM);
-            }
+            av_log(avctx, AV_LOG_ERROR, "cannot allocate temporary buffer\n");
+            return AVERROR(ENOMEM);
         }
         for (i = 0; i < 4; i++)
             srcs[i] = l->rgb_planes + (i + 1) * l->rgb_stride * avctx->height - l->rgb_stride;

libavcodec/lagarithrac.h

@@ -107,6 +107,9 @@ static inline uint8_t lag_get_rac(lag_rac *l)
         l->range -= range_scaled * l->prob[255];
     }
 
+    if (!l->range)
+        l->range = 0x80;
+
     l->low -= range_scaled * l->prob[val];
 
     return val;

libavcodec/libgsm.c

@@ -30,6 +30,7 @@
 #include <gsm/gsm.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "gsm.h"
 
 static av_cold int libgsm_encode_init(AVCodecContext *avctx) {
@@ -188,7 +189,7 @@ static int libgsm_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = avctx->frame_size;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/libopencore-amr.c

@@ -20,6 +20,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "libavutil/avstring.h"
 #include "libavutil/opt.h"
 
@@ -143,7 +144,7 @@ static int amr_nb_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = 160;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -295,7 +296,7 @@ static int amr_wb_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = 320;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/libspeexdec.c

@@ -23,6 +23,7 @@
 #include <speex/speex_stereo.h>
 #include <speex/speex_callbacks.h>
 #include "avcodec.h"
+#include "internal.h"
 
 typedef struct {
     AVFrame frame;
@@ -108,7 +109,7 @@ static int libspeex_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = s->frame_size;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/mace.c

@@ -25,6 +25,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 
 /*
  * Adapted to libavcodec by Francois Revol <revol@free.fr>
@@ -231,8 +232,8 @@ static av_cold int mace_decode_init(AVCodecContext * avctx)
 {
     MACEContext *ctx = avctx->priv_data;
 
-    if (avctx->channels > 2)
-        return -1;
+    if (avctx->channels > 2 || avctx->channels < 1)
+        return AVERROR(EINVAL);
     avctx->sample_fmt = AV_SAMPLE_FMT_S16;
 
     avcodec_get_frame_defaults(&ctx->frame);
@@ -253,7 +254,7 @@ static int mace_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     ctx->frame.nb_samples = 3 * (buf_size << (1 - is_mace3)) / avctx->channels;
-    if ((ret = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &ctx->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/mjpegdec.c

@@ -1111,7 +1111,7 @@ static int mjpeg_decode_scan_progressive_ac(MJpegDecodeContext *s, int ss,
         return AVERROR_INVALIDDATA;
 
     if (!Al) {
-        s->coefs_finished[c] |= (1LL << (se + 1)) - (1LL << ss);
+        s->coefs_finished[c] |= (2LL << se) - (1LL << ss);
         last_scan = !~s->coefs_finished[c];
     }
 

libavcodec/mlpdec.c

@@ -27,6 +27,7 @@
 #include <stdint.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "dsputil.h"
 #include "libavutil/intreadwrite.h"
 #include "get_bits.h"
@@ -982,7 +983,7 @@ static int output_data(MLPDecodeContext *m, unsigned int substr,
 
     /* get output buffer */
     m->frame.nb_samples = s->blockpos;
-    if ((ret = avctx->get_buffer(avctx, &m->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &m->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/mmvideo.c

@@ -152,6 +152,8 @@ static int mm_decode_inter(MmContext * s, int half_horiz, int half_vert)
             int replace_array = bytestream2_get_byte(&s->gb);
             for(j=0; j<8; j++) {
                 int replace = (replace_array >> (7-j)) & 1;
+                if (x + half_horiz >= s->avctx->width)
+                    return AVERROR_INVALIDDATA;
                 if (replace) {
                     int color = bytestream2_get_byte(&data_ptr);
                     s->frame.data[0][y*s->frame.linesize[0] + x] = color;

libavcodec/mpc7.c

@@ -27,6 +27,7 @@
 
 #include "libavutil/lfg.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "mpegaudiodsp.h"
@@ -217,7 +218,7 @@ static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = buf[1] ? c->lastframelen : MPC_FRAME_SIZE;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/mpc8.c

@@ -27,6 +27,7 @@
 
 #include "libavutil/lfg.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "dsputil.h"
 #include "mpegaudiodsp.h"
@@ -253,7 +254,7 @@ static int mpc8_decode_frame(AVCodecContext * avctx, void *data,
 
     /* get output buffer */
     c->frame.nb_samples = MPC_FRAME_SIZE;
-    if ((res = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    if ((res = ff_get_buffer(avctx, &c->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return res;
     }

libavcodec/mpeg12.c

@@ -83,6 +83,15 @@ static int mpeg_decode_motion(MpegEncContext *s, int fcode, int pred)
     return sign_extend(val, 5 + shift);
 }
 
+#define check_scantable_index(ctx, x)                                     \
+    do {                                                                  \
+        if ((x) > 63) {                                                   \
+            av_log(ctx->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", \
+                   ctx->mb_x, ctx->mb_y);                                 \
+            return AVERROR_INVALIDDATA;                                   \
+        }                                                                 \
+    } while (0)                                                           \
+
 static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
 {
     int level, dc, diff, i, j, run;
@@ -114,6 +123,7 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
                 break;
             } else if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = (level * qscale * quant_matrix[j]) >> 4;
                 level = (level - 1) | 1;
@@ -130,6 +140,7 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
                     level = SHOW_UBITS(re, &s->gb, 8)      ; LAST_SKIP_BITS(re, &s->gb, 8);
                 }
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = -level;
@@ -141,10 +152,6 @@ static inline int mpeg1_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
                     level = (level - 1) | 1;
                 }
             }
-            if (i > 63) {
-                av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
-            }
 
             block[j] = level;
         }
@@ -264,6 +271,7 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *bloc
 
             if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = ((level * 2 + 1) * qscale) >> 1;
                 level = (level - 1) | 1;
@@ -280,6 +288,7 @@ static inline int mpeg1_fast_decode_block_inter(MpegEncContext *s, DCTELEM *bloc
                     level = SHOW_UBITS(re, &s->gb, 8)      ; SKIP_BITS(re, &s->gb, 8);
                 }
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = -level;
@@ -345,6 +354,7 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block
 
             if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
                 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
@@ -356,6 +366,7 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block
                 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
 
                 i += run;
+                check_scantable_index(s, i);
                 j = scantable[i];
                 if (level < 0) {
                     level = ((-level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
@@ -364,10 +375,6 @@ static inline int mpeg2_decode_block_non_intra(MpegEncContext *s, DCTELEM *block
                     level = ((level * 2 + 1) * qscale * quant_matrix[j]) >> 5;
                 }
             }
-            if (i > 63) {
-                av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
-            }
 
             mismatch ^= level;
             block[j]  = level;
@@ -414,6 +421,7 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
 
         if (level != 0) {
             i += run;
+            check_scantable_index(s, i);
             j  = scantable[i];
             level = ((level * 2 + 1) * qscale) >> 1;
             level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
@@ -425,6 +433,7 @@ static inline int mpeg2_fast_decode_block_non_intra(MpegEncContext *s,
             level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
 
             i += run;
+            check_scantable_index(s, i);
             j  = scantable[i];
             if (level < 0) {
                 level = ((-level * 2 + 1) * qscale) >> 1;
@@ -491,6 +500,7 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
                 break;
             } else if (level != 0) {
                 i += run;
+                check_scantable_index(s, i);
                 j  = scantable[i];
                 level = (level * qscale * quant_matrix[j]) >> 4;
                 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
@@ -501,6 +511,7 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
                 UPDATE_CACHE(re, &s->gb);
                 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
                 i += run;
+                check_scantable_index(s, i);
                 j  = scantable[i];
                 if (level < 0) {
                     level = (-level * qscale * quant_matrix[j]) >> 4;
@@ -509,10 +520,6 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
                     level = (level * qscale * quant_matrix[j]) >> 4;
                 }
             }
-            if (i > 63) {
-                av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
-            }
 
             mismatch ^= level;
             block[j]  = level;
@@ -527,10 +534,10 @@ static inline int mpeg2_decode_block_intra(MpegEncContext *s, DCTELEM *block, in
 
 static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *block, int n)
 {
-    int level, dc, diff, j, run;
+    int level, dc, diff, i, j, run;
     int component;
     RLTable *rl;
-    uint8_t * scantable = s->intra_scantable.permutated;
+    uint8_t * const scantable = s->intra_scantable.permutated;
     const uint16_t *quant_matrix;
     const int qscale = s->qscale;
 
@@ -549,6 +556,7 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *bloc
     dc += diff;
     s->last_dc[component] = dc;
     block[0] = dc << (3 - s->intra_dc_precision);
+    i = 0;
     if (s->intra_vlc_format)
         rl = &ff_rl_mpeg2;
     else
@@ -564,8 +572,9 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *bloc
             if (level == 127) {
                 break;
             } else if (level != 0) {
-                scantable += run;
-                j = *scantable;
+                i += run;
+                check_scantable_index(s, i);
+                j  = scantable[i];
                 level = (level * qscale * quant_matrix[j]) >> 4;
                 level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
                 LAST_SKIP_BITS(re, &s->gb, 1);
@@ -574,8 +583,9 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *bloc
                 run = SHOW_UBITS(re, &s->gb, 6) + 1; LAST_SKIP_BITS(re, &s->gb, 6);
                 UPDATE_CACHE(re, &s->gb);
                 level = SHOW_SBITS(re, &s->gb, 12); SKIP_BITS(re, &s->gb, 12);
-                scantable += run;
-                j = *scantable;
+                i += run;
+                check_scantable_index(s, i);
+                j  = scantable[i];
                 if (level < 0) {
                     level = (-level * qscale * quant_matrix[j]) >> 4;
                     level = -level;
@@ -589,7 +599,7 @@ static inline int mpeg2_fast_decode_block_intra(MpegEncContext *s, DCTELEM *bloc
         CLOSE_READER(re, &s->gb);
     }
 
-    s->block_last_index[n] = scantable - s->intra_scantable.permutated;
+    s->block_last_index[n] = i;
     return 0;
 }
 

libavcodec/mpeg4videodec.c

@@ -160,7 +160,7 @@ static inline int mpeg4_is_resync(MpegEncContext *s){
     return 0;
 }
 
-static int mpeg4_decode_sprite_trajectory(MpegEncContext * s, GetBitContext *gb)
+static int mpeg4_decode_sprite_trajectory(MpegEncContext *s, GetBitContext *gb)
 {
     int i;
     int a= 2<<s->sprite_warping_accuracy;
@@ -176,8 +176,8 @@ static int mpeg4_decode_sprite_trajectory(MpegEncContext * s, GetBitContext *gb)
     int h= s->height;
     int min_ab;
 
-    if(w<=0 || h<=0)
-        return -1;
+    if (w <= 0 || h <= 0)
+        return AVERROR_INVALIDDATA;
 
     for(i=0; i<s->num_sprite_warping_points; i++){
         int length;
@@ -415,8 +415,8 @@ int mpeg4_decode_video_packet_header(MpegEncContext *s)
             skip_bits(&s->gb, 3); /* intra dc vlc threshold */
 //FIXME don't just ignore everything
             if(s->pict_type == AV_PICTURE_TYPE_S && s->vol_sprite_usage==GMC_SPRITE){
-                if(mpeg4_decode_sprite_trajectory(s, &s->gb) < 0)
-                    return -1;
+                if (mpeg4_decode_sprite_trajectory(s, &s->gb) < 0)
+                    return AVERROR_INVALIDDATA;
                 av_log(s->avctx, AV_LOG_ERROR, "untested\n");
             }
 
@@ -2056,8 +2056,8 @@ static int decode_vop_header(MpegEncContext *s, GetBitContext *gb){
      }
 
      if(s->pict_type == AV_PICTURE_TYPE_S && (s->vol_sprite_usage==STATIC_SPRITE || s->vol_sprite_usage==GMC_SPRITE)){
-         if(mpeg4_decode_sprite_trajectory(s, gb) < 0)
-             return -1;
+         if (mpeg4_decode_sprite_trajectory(s, gb) < 0)
+             return AVERROR_INVALIDDATA;
          if(s->sprite_brightness_change) av_log(s->avctx, AV_LOG_ERROR, "sprite_brightness_change not supported\n");
          if(s->vol_sprite_usage==STATIC_SPRITE) av_log(s->avctx, AV_LOG_ERROR, "static sprite not supported\n");
      }

libavcodec/mpegaudiodec.c

@@ -28,6 +28,7 @@
 
 #include "libavutil/audioconvert.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "get_bits.h"
 #include "mathops.h"
 #include "mpegaudiodsp.h"
@@ -1602,7 +1603,7 @@ static int mp_decode_frame(MPADecodeContext *s, OUT_INT *samples,
     /* get output buffer */
     if (!samples) {
         s->frame.nb_samples = s->avctx->frame_size;
-        if ((ret = s->avctx->get_buffer(s->avctx, &s->frame)) < 0) {
+        if ((ret = ff_get_buffer(s->avctx, &s->frame)) < 0) {
             av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
             return ret;
         }
@@ -1908,7 +1909,7 @@ static int decode_frame_mp3on4(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame->nb_samples = MPA_FRAME_SIZE;
-    if ((ret = avctx->get_buffer(avctx, s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
@@ -1941,7 +1942,8 @@ static int decode_frame_mp3on4(AVCodecContext *avctx, void *data,
 
         avpriv_mpegaudio_decode_header((MPADecodeHeader *)m, header);
 
-        if (ch + m->nb_channels > avctx->channels) {
+        if (ch + m->nb_channels > avctx->channels ||
+            s->coff[fr] + m->nb_channels > avctx->channels) {
             av_log(avctx, AV_LOG_ERROR, "frame channel count exceeds codec "
                                         "channel count\n");
             return AVERROR_INVALIDDATA;

libavcodec/mpegvideo.c

@@ -1237,8 +1237,13 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
             i = ff_find_unused_picture(s, 0);
             if (i < 0)
                 return i;
-            s->last_picture_ptr= &s->picture[i];
+
+            s->last_picture_ptr = &s->picture[i];
+
+            s->last_picture_ptr->f.reference   = 3;
             s->last_picture_ptr->f.key_frame = 0;
+            s->last_picture_ptr->f.pict_type = AV_PICTURE_TYPE_P;
+
             if (ff_alloc_picture(s, s->last_picture_ptr, 0) < 0)
                 return -1;
 
@@ -1259,8 +1264,13 @@ int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx)
             i = ff_find_unused_picture(s, 0);
             if (i < 0)
                 return i;
-            s->next_picture_ptr= &s->picture[i];
+
+            s->next_picture_ptr = &s->picture[i];
+
+            s->next_picture_ptr->f.reference   = 3;
             s->next_picture_ptr->f.key_frame = 0;
+            s->next_picture_ptr->f.pict_type = AV_PICTURE_TYPE_P;
+
             if (ff_alloc_picture(s, s->next_picture_ptr, 0) < 0)
                 return -1;
             ff_thread_report_progress((AVFrame *) s->next_picture_ptr,

libavcodec/mpegvideo.h

@@ -686,6 +686,9 @@ typedef struct MpegEncContext {
     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
     int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
     void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
+
+    uint8_t *pkt_swapped;
+    int pkt_swapped_allocated;
 } MpegEncContext;
 
 #define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? \

libavcodec/msrle.c

@@ -35,6 +35,7 @@
 #include "avcodec.h"
 #include "dsputil.h"
 #include "msrledec.h"
+#include "libavutil/imgutils.h"
 
 typedef struct MsrleContext {
     AVCodecContext *avctx;
@@ -108,7 +109,7 @@ static int msrle_decode_frame(AVCodecContext *avctx,
 
     /* FIXME how to correctly detect RLE ??? */
     if (avctx->height * istride == avpkt->size) { /* assume uncompressed */
-        int linesize = (avctx->width * avctx->bits_per_coded_sample + 7) / 8;
+        int linesize = av_image_get_linesize(avctx->pix_fmt, avctx->width, 0);
         uint8_t *ptr = s->frame.data[0];
         uint8_t *buf = avpkt->data + (avctx->height-1)*istride;
         int i, j;

libavcodec/mxpegdec.c

@@ -25,8 +25,10 @@
  * MxPEG decoder
  */
 
+#include "internal.h"
 #include "mjpeg.h"
 #include "mjpegdec.h"
+#include "internal.h"
 
 typedef struct MXpegDecodeContext {
     MJpegDecodeContext jpg;
@@ -250,7 +252,7 @@ static int mxpeg_decode_frame(AVCodecContext *avctx,
                     /* use stored SOF data to allocate current picture */
                     if (jpg->picture_ptr->data[0])
                         avctx->release_buffer(avctx, jpg->picture_ptr);
-                    if (avctx->get_buffer(avctx, jpg->picture_ptr) < 0) {
+                    if (ff_get_buffer(avctx, jpg->picture_ptr) < 0) {
                         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                         return AVERROR(ENOMEM);
                     }
@@ -269,7 +271,7 @@ static int mxpeg_decode_frame(AVCodecContext *avctx,
 
                     /* allocate dummy reference picture if needed */
                     if (!reference_ptr->data[0] &&
-                        avctx->get_buffer(avctx, reference_ptr) < 0) {
+                        ff_get_buffer(avctx, reference_ptr) < 0) {
                         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
                         return AVERROR(ENOMEM);
                     }

libavcodec/nellymoserdec.c

@@ -36,6 +36,7 @@
 #include "libavutil/random_seed.h"
 #include "libavutil/audioconvert.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "dsputil.h"
 #include "fft.h"
 #include "fmtconvert.h"
@@ -184,7 +185,7 @@ static int decode_tag(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = NELLY_SAMPLES * blocks;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }

libavcodec/nuv.c

@@ -85,7 +85,7 @@ static int get_quant(AVCodecContext *avctx, NuvContext *c,
     int i;
     if (size < 2 * 64 * 4) {
         av_log(avctx, AV_LOG_ERROR, "insufficient rtjpeg quant data\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     for (i = 0; i < 64; i++, buf += 4)
         c->lq[i] = AV_RL32(buf);
@@ -108,6 +108,8 @@ static void get_quant_quality(NuvContext *c, int quality) {
 
 static int codec_reinit(AVCodecContext *avctx, int width, int height, int quality) {
     NuvContext *c = avctx->priv_data;
+    int ret;
+
     width  = FFALIGN(width,  2);
     height = FFALIGN(height, 2);
     if (quality >= 0)
@@ -115,12 +117,14 @@ static int codec_reinit(AVCodecContext *avctx, int width, int height, int qualit
     if (width != c->width || height != c->height) {
         // also reserve space for a possible additional header
         int buf_size = 24 + height * width * 3 / 2 + AV_LZO_OUTPUT_PADDING;
-        if (av_image_check_size(height, width, 0, avctx) < 0 ||
-            buf_size > INT_MAX/8)
+        if (buf_size > INT_MAX/8)
             return -1;
+        if ((ret = av_image_check_size(height, width, 0, avctx)) < 0)
+            return ret;
         avctx->width = c->width = width;
         avctx->height = c->height = height;
-        av_fast_malloc(&c->decomp_buf, &c->decomp_size, buf_size);
+        av_fast_malloc(&c->decomp_buf, &c->decomp_size,
+                       buf_size);
         if (!c->decomp_buf) {
             av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
             return AVERROR(ENOMEM);
@@ -142,13 +146,14 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
     int keyframe;
     int size_change = 0;
     int result;
+    int ret;
     enum {NUV_UNCOMPRESSED = '0', NUV_RTJPEG = '1',
           NUV_RTJPEG_IN_LZO = '2', NUV_LZO = '3',
           NUV_BLACK = 'N', NUV_COPY_LAST = 'L'} comptype;
 
     if (buf_size < 12) {
         av_log(avctx, AV_LOG_ERROR, "coded frame too small\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     // codec data (rtjpeg quant tables)
@@ -166,7 +171,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
 
     if (buf[0] != 'V' || buf_size < 12) {
         av_log(avctx, AV_LOG_ERROR, "not a nuv video frame\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     comptype = buf[1];
     switch (comptype) {
@@ -183,14 +188,17 @@ retry:
     buf = &buf[12];
     buf_size -= 12;
     if (comptype == NUV_RTJPEG_IN_LZO || comptype == NUV_LZO) {
-        int outlen = c->decomp_size - AV_LZO_OUTPUT_PADDING, inlen = buf_size;
-        if (av_lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen))
+        int outlen = c->decomp_size - FFMAX(FF_INPUT_BUFFER_PADDING_SIZE, AV_LZO_OUTPUT_PADDING);
+        int inlen  = buf_size;
+        if (av_lzo1x_decode(c->decomp_buf, &outlen, buf, &inlen)) {
             av_log(avctx, AV_LOG_ERROR, "error during lzo decompression\n");
+            return AVERROR_INVALIDDATA;
+        }
         buf = c->decomp_buf;
-        buf_size = c->decomp_size - AV_LZO_OUTPUT_PADDING - outlen;
+        buf_size = c->decomp_size - FFMAX(FF_INPUT_BUFFER_PADDING_SIZE, AV_LZO_OUTPUT_PADDING) - outlen;
     }
     if (c->codec_frameheader) {
-        int w, h, q, res;
+        int w, h, q;
         if (buf_size < RTJPEG_HEADER_SIZE || buf[4] != RTJPEG_HEADER_SIZE ||
             buf[5] != RTJPEG_FILE_VERSION) {
             av_log(avctx, AV_LOG_ERROR, "invalid nuv video frame\n");
@@ -199,11 +207,10 @@ retry:
         w = AV_RL16(&buf[6]);
         h = AV_RL16(&buf[8]);
         q = buf[10];
+        if ((result = codec_reinit(avctx, w, h, q)) < 0)
+            return result;
 
-        res = codec_reinit(avctx, w, h, q);
-        if (res < 0)
-            return res;
-        if (res) {
+        if (result) {
             buf = avpkt->data;
             buf_size = avpkt->size;
             size_change = 1;
@@ -221,7 +228,7 @@ retry:
     result = avctx->reget_buffer(avctx, &c->pic);
     if (result < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
+        return result;
     }
 
     c->pic.pict_type = keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P;
@@ -240,7 +247,9 @@ retry:
         }
         case NUV_RTJPEG_IN_LZO:
         case NUV_RTJPEG: {
-            rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, buf, buf_size);
+            ret = rtjpeg_decode_frame_yuv420(&c->rtj, &c->pic, buf, buf_size);
+            if (ret < 0)
+                return ret;
             break;
         }
         case NUV_BLACK: {
@@ -255,7 +264,7 @@ retry:
         }
         default:
             av_log(avctx, AV_LOG_ERROR, "unknown compression\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
     }
 
     *picture = c->pic;
@@ -265,6 +274,8 @@ retry:
 
 static av_cold int decode_init(AVCodecContext *avctx) {
     NuvContext *c = avctx->priv_data;
+    int ret;
+
     avctx->pix_fmt = PIX_FMT_YUV420P;
     c->pic.data[0] = NULL;
     c->decomp_buf = NULL;
@@ -275,8 +286,9 @@ static av_cold int decode_init(AVCodecContext *avctx) {
     if (avctx->extradata_size)
         get_quant(avctx, c, avctx->extradata, avctx->extradata_size);
     dsputil_init(&c->dsp, avctx);
-    if (codec_reinit(avctx, avctx->width, avctx->height, -1) < 0)
-        return 1;
+    if ((ret = codec_reinit(avctx, avctx->width, avctx->height, -1)) < 0)
+        return ret;
+
     return 0;
 }
 

libavcodec/pcm-mpeg.c

@@ -26,6 +26,7 @@
 
 #include "libavutil/audioconvert.h"
 #include "avcodec.h"
+#include "internal.h"
 #include "bytestream.h"
 
 /*
@@ -163,7 +164,7 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = samples;
-    if ((retval = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((retval = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return retval;
     }

libavcodec/pcm.c

@@ -48,6 +48,7 @@ static av_cold int pcm_encode_init(AVCodecContext *avctx)
 
     avctx->bits_per_coded_sample = av_get_bits_per_sample(avctx->codec->id);
     avctx->block_align = avctx->channels * avctx->bits_per_coded_sample/8;
+    avctx->bit_rate              = avctx->block_align * avctx->sample_rate * 8;
     avctx->coded_frame= avcodec_alloc_frame();
     avctx->coded_frame->key_frame= 1;
 
@@ -304,7 +305,7 @@ static int pcm_decode_frame(AVCodecContext *avctx, void *data,
 
     /* get output buffer */
     s->frame.nb_samples = n * samples_per_block / avctx->channels;
-    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }