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| author | Daniel Kang <daniel.d.kang@gmail.com> | 2010-12-29 21:42:33 +0000 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-12-29 21:42:33 +0000 |
| commit | e9c576a467534d5d86df011689faec7b24c09fe7 (patch) | |
| tree | 35a424e3e0a69e544081a2abb14370d5bcc4a6af /libavcodec/x86/h264_intrapred.asm | |
| parent | 92f441ae863ba00438a8b496a3107a42a2e270ec (diff) | |
| download | ffmpeg-e9c576a467534d5d86df011689faec7b24c09fe7.tar.gz | |
Port pred4x4_horizontal_up_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 26156 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/x86/h264_intrapred.asm')
| -rw-r--r-- | libavcodec/x86/h264_intrapred.asm | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/libavcodec/x86/h264_intrapred.asm b/libavcodec/x86/h264_intrapred.asm index 81f0fc659f..a66709c97a 100644 --- a/libavcodec/x86/h264_intrapred.asm +++ b/libavcodec/x86/h264_intrapred.asm @@ -2561,4 +2561,37 @@ cglobal pred4x4_vertical_left_mmxext, 3,3 movh [r1+r2*1], m4 movh [r1+r2*2], m0 RET + +;----------------------------------------------------------------------------- +; void pred4x4_horizontal_up_mmxext(uint8_t *src, const uint8_t *topright, int stride) +;----------------------------------------------------------------------------- + +INIT_MMX +cglobal pred4x4_horizontal_up_mmxext, 3,3 + sub r0, r2 + lea r1, [r0+r2*2] + movq m0, [r0+r2*1-8] + punpckhbw m0, [r0+r2*2-8] + movq m1, [r1+r2*1-8] + punpckhbw m1, [r1+r2*2-8] + punpckhwd m0, m1 + movq m1, m0 + punpckhbw m1, m1 + pshufw m1, m1, 0xFF + punpckhdq m0, m1 + movq m2, m0 + movq m3, m0 + movq m7, m0 + psrlq m2, 16 + psrlq m3, 8 + pavgb m7, m3 + PRED4x4_LOWPASS m4, m0, m2, m3, m5 + punpcklbw m7, m4 + movd [r0+r2*1], m7 + psrlq m7, 16 + movd [r0+r2*2], m7 + psrlq m7, 16 + movd [r1+r2*1], m7 + movd [r1+r2*2], m1 + RET %endif |