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Port pred4x4_down_right_mmxext (H.264 intra prediction) from x264 (authors:

Browse Source 
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
This commit is contained in:
Daniel Kang 2010-12-29 21:55:51 +00:00 committed by Ronald S. Bultje
parent d0aebe23e2
commit 720ea2d5b2
2 changed files with 31 additions and 0 deletions
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29
libavcodec/x86/h264_intrapred.asm
View File

@ -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

2
libavcodec/x86/h264_intrapred_init.c
View File

@ -84,6 +84,7 @@ void ff_pred8x8l_horizontal_down_sse2(uint8_t *src, int has_topleft, int has_top
void ff_pred8x8l_horizontal_down_ssse3(uint8_t *src, int has_topleft, int has_topright, 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_down_right_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_vertical_right_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);
@ -132,6 +133,7 @@ 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 [DIAG_DOWN_RIGHT_PRED] = ff_pred4x4_down_right_mmxext;
h->pred4x4 [VERT_RIGHT_PRED ] = ff_pred4x4_vertical_right_mmxext;
h->pred4x4 [HOR_DOWN_PRED ] = ff_pred4x4_horizontal_down_mmxext;
#endif