configure: Redo enabling cbs in lavf

Right now, the cbs_type_table (the table of all CodedBitstreamTypes
supported by CBS) is empty unless cbs_apv and cbs_av1 is enabled.
The latter are only enabled in configure if they are needed in lavc.
This means that the mov muxers (the only users of cbs-in-lavf)
don't work as they should depending upon the availability of
e.g. the av1_metadata BSF. The table being empty is also illegal C
and according to PR #23038 MSVC warns about this (as does GCC
with -pedantic) and it may even lead to an internal compiler error.

This could be fixed by simply adding a mov_muxer->cbs_av1,cbs_apv
dependency in configure, yet this would have the downside that
it would force cbs_av1 and cbs_apv to be built for lavc, too,
even though it may not be needed there. So add new configure
variables cbs_{apv,av1}_lavf and cbs_lavf to track this correctly.

Reported-by: xiaozhuai <798047000@qq.com>
Reviewed-by: James Almer <jamrial@gmail.com>
Reviewed-by: xiaozhuai <798047000@qq.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavformat/Makefile

@@ -40,6 +40,8 @@ OBJS = allformats.o         \
 OBJS-$(HAVE_LIBC_MSVCRT)                 += file_open.o
 
 # subsystems
+OBJS-$(CONFIG_CBS_APV_LAVF)              += cbs_apv.o cbs.o
+OBJS-$(CONFIG_CBS_AV1_LAVF)              += cbs_av1.o cbs.o
 OBJS-$(CONFIG_ISO_MEDIA)                 += isom.o
 OBJS-$(CONFIG_ISO_WRITER)                += avc.o hevc.o vvc.o
 OBJS-$(CONFIG_IAMFDEC)                   += iamf_reader.o iamf_parse.o iamf.o
@@ -390,7 +392,7 @@ OBJS-$(CONFIG_MOV_DEMUXER)               += mov.o mov_chan.o mov_esds.o \
 OBJS-$(CONFIG_MOV_MUXER)                 += movenc.o \
                                             movenchint.o mov_chan.o rtp.o \
                                             movenccenc.o movenc_ttml.o rawutils.o \
-                                            apv.o dovi_isom.o evc.o cbs.o cbs_av1.o cbs_apv.o
+                                            apv.o dovi_isom.o evc.o
 OBJS-$(CONFIG_MP2_MUXER)                 += rawenc.o
 OBJS-$(CONFIG_MP3_DEMUXER)               += mp3dec.o replaygain.o
 OBJS-$(CONFIG_MP3_MUXER)                 += mp3enc.o rawenc.o id3v2enc.o

libavformat/cbs.h

@@ -19,9 +19,13 @@
 #ifndef AVFORMAT_CBS_H
 #define AVFORMAT_CBS_H
 
+#include "config.h"
+
 #define CBS_PREFIX lavf_cbs
 #define CBS_WRITE 0
 #define CBS_TRACE 0
+#define CBS_APV CONFIG_CBS_APV_LAVF
+#define CBS_AV1 CONFIG_CBS_AV1_LAVF
 #define CBS_H264 0
 #define CBS_H265 0
 #define CBS_H266 0