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swresample/resample: mmx2/sse2 int16 linear interpolation

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About three times faster

Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
James Almer
2014-03-23 19:05:16 -03:00
committed by Michael Niedermayer
parent ffd77f94a2
commit fa25c4c400
2 changed files with 68 additions and 0 deletions
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libswresample/resample_template.c
+7
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@@ -81,9 +81,11 @@
# define RENAME(N) N ## _int16
# elif defined(TEMPLATE_RESAMPLE_S16_MMX2)
# define COMMON_CORE COMMON_CORE_INT16_MMX2
# define LINEAR_CORE LINEAR_CORE_INT16_MMX2
# define RENAME(N) N ## _int16_mmx2
# elif defined(TEMPLATE_RESAMPLE_S16_SSE2)
# define COMMON_CORE COMMON_CORE_INT16_SSE2
# define LINEAR_CORE LINEAR_CORE_INT16_SSE2
# define RENAME(N) N ## _int16_sse2
# endif
@@ -163,10 +165,14 @@ int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int
OUT(dst[dst_index], val);
}else if(c->linear){
FELEM2 v2=0;
#ifdef LINEAR_CORE
LINEAR_CORE
#else
for(i=0; i<c->filter_length; i++){
val += src[sample_index + i] * (FELEM2)filter[i];
v2 += src[sample_index + i] * (FELEM2)filter[i + c->filter_alloc];
}
#endif
val+=(v2-val)*(FELEML)frac / c->src_incr;
OUT(dst[dst_index], val);
}else{
@@ -213,6 +219,7 @@ int RENAME(swri_resample)(ResampleContext *c, DELEM *dst, const DELEM *src, int
}
#undef COMMON_CORE
#undef LINEAR_CORE
#undef RENAME
#undef FILTER_SHIFT
#undef DELEM