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| author | Daniel Kang <daniel.d.kang@gmail.com> | 2010-12-29 21:55:51 +0000 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-12-29 21:55:51 +0000 |
| commit | 720ea2d5b2b8498e686f164e8819eb25ea4b94f6 (patch) | |
| tree | 8b4b07e2e54978be35149e2d2adcf0ee94b8b0f6 /libavcodec/x86/h264_intrapred.asm | |
| parent | d0aebe23e21b86c0c87cabce823722fab5fef0c8 (diff) | |
Port pred4x4_down_right_mmxext (H.264 intra prediction) from x264 (authors:
Jason, Loren, Holger) to FFmpeg. Patch by Daniel Kang <daniel dot d dot kang
at gmail com>, as part of Google's GCI 2010.
Originally committed as revision 26159 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/x86/h264_intrapred.asm')
| -rw-r--r-- | libavcodec/x86/h264_intrapred.asm | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libavcodec/x86/h264_intrapred.asm b/libavcodec/x86/h264_intrapred.asm index 2f8eccbd9c..3810853362 100644 --- a/libavcodec/x86/h264_intrapred.asm +++ b/libavcodec/x86/h264_intrapred.asm @@ -2661,4 +2661,33 @@ cglobal pred4x4_vertical_right_mmxext, 3,3 PALIGNR m3, m1, 7, m1 movh [r1+r2*2], m3 RET + +;----------------------------------------------------------------------------- +; void pred4x4_down_right_mmxext(uint8_t *src, const uint8_t *topright, int stride) +;----------------------------------------------------------------------------- + +INIT_MMX +%define PALIGNR PALIGNR_MMX +cglobal pred4x4_down_right_mmxext, 3,3 + sub r0, r2 + lea r1, [r0+r2*2] + movq m1, [r1-8] + movq m2, [r0+r2*1-8] + punpckhbw m2, [r0-8] + movh m3, [r0] + punpckhwd m1, m2 + PALIGNR m3, m1, 5, m1 + movq m1, m3 + PALIGNR m3, [r1+r2*1-8], 7, m4 + movq m2, m3 + PALIGNR m3, [r1+r2*2-8], 7, m4 + PRED4x4_LOWPASS m0, m3, m1, m2, m4 + movh [r1+r2*2], m0 + psrlq m0, 8 + movh [r1+r2*1], m0 + psrlq m0, 8 + movh [r0+r2*2], m0 + psrlq m0, 8 + movh [r0+r2*1], m0 + RET %endif |