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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2011-03-11 16:45:01 -0500 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2011-03-14 08:45:31 -0400 |
| commit | f1efbca5e914b28cd37cb1ea82d371acf3b96f61 (patch) | |
| tree | a1464d5951e558f17e941c9f13d3548b733e6c03 /libavcodec/x86/ac3dsp_mmx.c | |
| parent | 323e6fead07c75f418e4b60704a4f437bb3483b2 (diff) | |
| download | ffmpeg-f1efbca5e914b28cd37cb1ea82d371acf3b96f61.tar.gz | |
ac3enc: add SIMD-optimized shifting functions for use with the fixed-point AC3 encoder.
Diffstat (limited to 'libavcodec/x86/ac3dsp_mmx.c')
| -rw-r--r-- | libavcodec/x86/ac3dsp_mmx.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libavcodec/x86/ac3dsp_mmx.c b/libavcodec/x86/ac3dsp_mmx.c index d8af59ce8d..835b10696d 100644 --- a/libavcodec/x86/ac3dsp_mmx.c +++ b/libavcodec/x86/ac3dsp_mmx.c @@ -32,6 +32,12 @@ extern int ff_ac3_max_msb_abs_int16_mmxext(const int16_t *src, int len); extern int ff_ac3_max_msb_abs_int16_sse2 (const int16_t *src, int len); extern int ff_ac3_max_msb_abs_int16_ssse3 (const int16_t *src, int len); +extern void ff_ac3_lshift_int16_mmx (int16_t *src, unsigned int len, unsigned int shift); +extern void ff_ac3_lshift_int16_sse2(int16_t *src, unsigned int len, unsigned int shift); + +extern void ff_ac3_rshift_int32_mmx (int32_t *src, unsigned int len, unsigned int shift); +extern void ff_ac3_rshift_int32_sse2(int32_t *src, unsigned int len, unsigned int shift); + av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c) { int mm_flags = av_get_cpu_flags(); @@ -40,6 +46,8 @@ av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c) if (mm_flags & AV_CPU_FLAG_MMX) { c->ac3_exponent_min = ff_ac3_exponent_min_mmx; c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_mmx; + c->ac3_lshift_int16 = ff_ac3_lshift_int16_mmx; + c->ac3_rshift_int32 = ff_ac3_rshift_int32_mmx; } if (mm_flags & AV_CPU_FLAG_MMX2 && HAVE_MMX2) { c->ac3_exponent_min = ff_ac3_exponent_min_mmxext; @@ -48,6 +56,10 @@ av_cold void ff_ac3dsp_init_x86(AC3DSPContext *c) if (mm_flags & AV_CPU_FLAG_SSE2 && HAVE_SSE) { c->ac3_exponent_min = ff_ac3_exponent_min_sse2; c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_sse2; + if (!(mm_flags & AV_CPU_FLAG_SSE2SLOW)) { + c->ac3_lshift_int16 = ff_ac3_lshift_int16_sse2; + c->ac3_rshift_int32 = ff_ac3_rshift_int32_sse2; + } } if (mm_flags & AV_CPU_FLAG_SSSE3 && HAVE_SSSE3) { c->ac3_max_msb_abs_int16 = ff_ac3_max_msb_abs_int16_ssse3; |