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| author | Daniel Kang <daniel.d.kang@gmail.com> | 2010-12-24 22:43:07 +0000 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-12-24 22:43:07 +0000 |
| commit | 911b32f482985ab284a21522fa5a3c2baed421d5 (patch) | |
| tree | 476247ce83271823056488aecbd79f7c40ac57af /libavcodec/x86/h264_intrapred.asm | |
| parent | 8d147f1f60f8912fa21b09c60973b9758e953295 (diff) | |
| download | ffmpeg-911b32f482985ab284a21522fa5a3c2baed421d5.tar.gz | |
Port pred4x4_down_left_mmxext (H.264 intra prediction) from x264 to FFmpeg.
LGPL relicensing approved by original authors: Holger Lubitz <holger lubitz
org>, Jason Garrett-Glaser <darkshikari gmail com> and Loren Merritt <lorenm
at u dot washington dot edu>. Patch by Daniel Kang <daniel dot d dot kang at
gmail com>, as part of Google's GCI 2010.
Originally committed as revision 26087 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/x86/h264_intrapred.asm')
| -rw-r--r-- | libavcodec/x86/h264_intrapred.asm | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/libavcodec/x86/h264_intrapred.asm b/libavcodec/x86/h264_intrapred.asm index 7d3ef95557..14a6038785 100644 --- a/libavcodec/x86/h264_intrapred.asm +++ b/libavcodec/x86/h264_intrapred.asm @@ -1104,3 +1104,31 @@ cglobal pred4x4_vertical_vp8_mmxext, 3,3 movd [r1+r2*1], m3 movd [r1+r2*2], m3 RET + +;----------------------------------------------------------------------------- +; void pred4x4_down_left_mmxext(uint8_t *src, const uint8_t *topright, int stride) +;----------------------------------------------------------------------------- + +INIT_MMX +cglobal pred4x4_down_left_mmxext, 3,3 + sub r0, r2 + movq m1, [r0] + punpckldq m1, [r1] + movq m2, m1 + movq m3, m1 + movq m4, m1 + psllq m1, 8 + pxor m2, m1 + psrlq m2, 8 + pxor m3, m2 + PRED4x4_LOWPASS m0, m1, m3, m4, m5 + lea r1, [r0+r2*2] + psrlq m0, 8 + movd [r0+r2*1], m0 + psrlq m0, 8 + movd [r0+r2*2], m0 + psrlq m0, 8 + movd [r1+r2*1], m0 + psrlq m0, 8 + movd [r1+r2*2], m0 + RET |