diff options
| author | James Darnley <jdarnley@obe.tv> | 2017-03-16 15:07:11 +0100 |
|---|---|---|
| committer | James Darnley <jdarnley@obe.tv> | 2017-05-15 15:00:19 +0200 |
| commit | 27460dfebc296636dec2584e0d74aaa4d48da0b9 (patch) | |
| tree | 3dbbf78280ed29a9c384b15609e420bf96591c95 /libavcodec | |
| parent | f61d454ca13f277b6ab7bbc9ebf7d26ce6d67ec6 (diff) | |
| download | ffmpeg-27460dfebc296636dec2584e0d74aaa4d48da0b9.tar.gz | |
avcodec/h264: add avx 8-bit h264_idct_dc_add
Haswell:
- 1.02x faster (405±0.7 vs. 397±0.8 decicycles) compared with mmxext
Skylake-U:
- 1.06x faster (498±1.8 vs. 470±1.3 decicycles) compared with mmxext
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/x86/h264_idct.asm | 20 | ||||
| -rw-r--r-- | libavcodec/x86/h264dsp_init.c | 2 |
2 files changed, 22 insertions, 0 deletions
diff --git a/libavcodec/x86/h264_idct.asm b/libavcodec/x86/h264_idct.asm index 81fe793600..01078589db 100644 --- a/libavcodec/x86/h264_idct.asm +++ b/libavcodec/x86/h264_idct.asm @@ -1158,7 +1158,27 @@ INIT_XMM avx movd [%7+%8], %4 %endmacro +%macro DC_ADD_INIT 1 + add %1d, 32 + sar %1d, 6 + movd m0, %1d + pshuflw m0, m0, 0 + lea %1, [3*stride_q] + pxor m1, m1 + psubw m1, m0 + packuswb m0, m0 + packuswb m1, m1 +%endmacro + cglobal h264_idct_add_8, 3, 3, 8, dst_, block_, stride_ movsxdifnidn stride_q, stride_d IDCT4_ADD dst_q, block_q, stride_q RET + +cglobal h264_idct_dc_add_8, 3, 4, 6, dst_, block_, stride_ + movsxdifnidn stride_q, stride_d + movsx r3d, word [block_q] + mov dword [block_q], 0 + DC_ADD_INIT r3 + DC_ADD_MMXEXT_OP movd, dst_q, stride_q, r3 +RET diff --git a/libavcodec/x86/h264dsp_init.c b/libavcodec/x86/h264dsp_init.c index 8ba085f5e8..bf74937b3f 100644 --- a/libavcodec/x86/h264dsp_init.c +++ b/libavcodec/x86/h264dsp_init.c @@ -35,6 +35,7 @@ IDCT_ADD_FUNC(, 8, mmx) IDCT_ADD_FUNC(, 8, avx) IDCT_ADD_FUNC(, 10, sse2) IDCT_ADD_FUNC(_dc, 8, mmxext) +IDCT_ADD_FUNC(_dc, 8, avx) IDCT_ADD_FUNC(_dc, 10, mmxext) IDCT_ADD_FUNC(8_dc, 8, mmxext) IDCT_ADD_FUNC(8_dc, 10, sse2) @@ -340,6 +341,7 @@ av_cold void ff_h264dsp_init_x86(H264DSPContext *c, const int bit_depth, } c->h264_idct_add = ff_h264_idct_add_8_avx; + c->h264_idct_dc_add = ff_h264_idct_dc_add_8_avx; } } else if (bit_depth == 10) { if (EXTERNAL_MMXEXT(cpu_flags)) { |