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Port pred4x4_horizontal_down_mmxext (H.264 intra prediction) from x264

Browse Source 
(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 26157 to svn://svn.ffmpeg.org/ffmpeg/trunk
oldabi
Daniel Kang 14 years ago committed by Ronald S. Bultje
parent e9c576a467
commit 76497232ef
2 changed files with 38 additions and 0 deletions
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  1. 36
      libavcodec/x86/h264_intrapred.asm
  2. 2
      libavcodec/x86/h264_intrapred_init.c

36
libavcodec/x86/h264_intrapred.asm
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@ -2594,4 +2594,40 @@ cglobal pred4x4_horizontal_up_mmxext, 3,3
movd [r1+r2*1], m7
movd [r1+r2*2], m1
RET
;-----------------------------------------------------------------------------
; void pred4x4_horizontal_down_mmxext(uint8_t *src, const uint8_t *topright, int stride)
;-----------------------------------------------------------------------------
INIT_MMX
%define PALIGNR PALIGNR_MMX
cglobal pred4x4_horizontal_down_mmxext, 3,3
sub r0, r2
lea r1, [r0+r2*2]
movh m0, [r0-4] ; lt ..
punpckldq m0, [r0] ; t3 t2 t1 t0 lt .. .. ..
psllq m0, 8 ; t2 t1 t0 lt .. .. .. ..
movq m1, [r1+r2*2-8] ; l3
punpckhbw m1, [r1+r2*1-8] ; l2 l3
movq m2, [r0+r2*2-8] ; l1
punpckhbw m2, [r0+r2*1-8] ; l0 l1
punpckhwd m1, m2 ; l0 l1 l2 l3
punpckhdq m1, m0 ; t2 t1 t0 lt l0 l1 l2 l3
movq m0, m1
movq m2, m1
movq m5, m1
psrlq m0, 16 ; .. .. t2 t1 t0 lt l0 l1
psrlq m2, 8 ; .. t2 t1 t0 lt l0 l1 l2
pavgb m5, m2
PRED4x4_LOWPASS m3, m1, m0, m2, m4
punpcklbw m5, m3
psrlq m3, 32
PALIGNR m3, m5, 6, m4
movh [r1+r2*2], m5
psrlq m5, 16
movh [r1+r2*1], m5
psrlq m5, 16
movh [r0+r2*2], m5
movh [r0+r2*1], m3
RET
%endif

2
libavcodec/x86/h264_intrapred_init.c
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@ -86,6 +86,7 @@ void ff_pred4x4_dc_mmxext (uint8_t *src, const uint8_t *topright, int s
void ff_pred4x4_down_left_mmxext (uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_vertical_left_mmxext(uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_horizontal_up_mmxext(uint8_t *src, const uint8_t *topright, int stride);
void ff_pred4x4_horizontal_down_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);
@ -130,6 +131,7 @@ void ff_h264_pred_init_x86(H264PredContext *h, int codec_id)
h->pred8x8l [VERT_RIGHT_PRED ] = ff_pred8x8l_vertical_right_mmxext;
h->pred8x8l [HOR_UP_PRED ] = ff_pred8x8l_horizontal_up_mmxext;
h->pred8x8l [HOR_DOWN_PRED ] = ff_pred8x8l_horizontal_down_mmxext;
h->pred4x4 [HOR_DOWN_PRED ] = ff_pred4x4_horizontal_down_mmxext;
#endif
h->pred4x4 [DC_PRED ] = ff_pred4x4_dc_mmxext;
#if CONFIG_GPL

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