[FFmpeg-devel] [PATCH 05/10] h264_idct8_add

James Darnley jdarnley at obe.tv
Fri Mar 17 15:18:40 EET 2017


1.01x faster (1069±1.9 vs. 1060±0.7 decicycles) compared with sse2
---
 libavcodec/x86/h264_idct.asm  | 5 +++++
 libavcodec/x86/h264dsp_init.c | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/libavcodec/x86/h264_idct.asm b/libavcodec/x86/h264_idct.asm
index 24fb4d2..ca8ffdb 100644
--- a/libavcodec/x86/h264_idct.asm
+++ b/libavcodec/x86/h264_idct.asm
@@ -1162,3 +1162,8 @@ 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_idct8_add_8, 3, 4, 10, dst_, block_, stride_
+    movsxdifnidn stride_q, stride_d
+    IDCT8_ADD_SSE dst_q, block_q, stride_q, r3
+RET
diff --git a/libavcodec/x86/h264dsp_init.c b/libavcodec/x86/h264dsp_init.c
index 8ba085f..2172a71 100644
--- a/libavcodec/x86/h264dsp_init.c
+++ b/libavcodec/x86/h264dsp_init.c
@@ -40,6 +40,7 @@ IDCT_ADD_FUNC(8_dc, 8, mmxext)
 IDCT_ADD_FUNC(8_dc, 10, sse2)
 IDCT_ADD_FUNC(8, 8, mmx)
 IDCT_ADD_FUNC(8, 8, sse2)
+IDCT_ADD_FUNC(8, 8, avx)
 IDCT_ADD_FUNC(8, 10, sse2)
 IDCT_ADD_FUNC(, 10, avx)
 IDCT_ADD_FUNC(8_dc, 10, avx)
@@ -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_idct8_add       = ff_h264_idct8_add_8_avx;
         }
     } else if (bit_depth == 10) {
         if (EXTERNAL_MMXEXT(cpu_flags)) {
-- 
2.8.3



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