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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
This commit is contained in:
Daniel Kang 2010-12-24 22:43:07 +00:00 committed by Ronald S. Bultje
parent 8d147f1f60
commit 911b32f482
2 changed files with 31 additions and 0 deletions
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28
libavcodec/x86/h264_intrapred.asm
View File

@ -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

3
libavcodec/x86/h264_intrapred_init.c
View File

@ -58,6 +58,7 @@ void ff_pred8x8_tm_vp8_mmxext (uint8_t *src, int stride);
void ff_pred8x8_tm_vp8_sse2 (uint8_t *src, int stride);
void ff_pred8x8_tm_vp8_ssse3 (uint8_t *src, int stride);
void ff_pred4x4_dc_mmxext (uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_down_left_mmxext (uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_tm_vp8_mmx (uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_tm_vp8_mmxext (uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_tm_vp8_ssse3 (uint8_t *src, const uint8_t *topright, int stride);
@ -94,6 +95,8 @@ void ff_h264_pred_init_x86(H264PredContext *h, int codec_id)
h->pred16x16[DC_PRED8x8 ] = ff_pred16x16_dc_mmxext;
h->pred8x8 [HOR_PRED8x8 ] = ff_pred8x8_horizontal_mmxext;
h->pred4x4 [DC_PRED ] = ff_pred4x4_dc_mmxext;
if (codec_id == CODEC_ID_VP8 || codec_id == CODEC_ID_H264)
h->pred4x4 [DIAG_DOWN_LEFT_PRED ] = ff_pred4x4_down_left_mmxext;
if (codec_id == CODEC_ID_VP8) {
h->pred16x16[PLANE_PRED8x8] = ff_pred16x16_tm_vp8_mmxext;
h->pred8x8 [DC_PRED8x8 ] = ff_pred8x8_dc_rv40_mmxext;