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Port pred8x8_dc_mmxext (H.264 intra prediction) from x264 to FFmpeg. Original 

authors: Holger Lubitz <holger lubitz org>, Jason Garrett-Glaser <darkshikari
gmail com> (approves LGPL relicensing for this code) and Loren Merritt <lorenm
at u dot washington dot edu> (approves LGPL relicensing for this code). Patch
by Daniel Kang <daniel dot d dot kang at gmail com>, as part of Google's GCI
2010.

Originally committed as revision 26135 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ronald S. Bultje 2010-12-29 18:00:26 +00:00
parent 8d660f7527
commit a2dfe8d18d
2 changed files with 64 additions and 0 deletions
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62
libavcodec/x86/h264_intrapred.asm
View File

@ -865,6 +865,68 @@ cglobal pred8x8_top_dc_mmxext, 2,5
RET
%endif
;-----------------------------------------------------------------------------
; void pred8x8_dc_mmxext(uint8_t *src, int stride)
;-----------------------------------------------------------------------------
%ifdef CONFIG_GPL
INIT_MMX
cglobal pred8x8_dc_mmxext, 2,5
sub r0, r1
pxor m7, m7
movd m0, [r0+0]
movd m1, [r0+4]
psadbw m0, m7 ; s0
mov r4, r0
psadbw m1, m7 ; s1
movzx r2d, byte [r0+r1*1-1]
movzx r3d, byte [r0+r1*2-1]
lea r0, [r0+r1*2]
add r2d, r3d
movzx r3d, byte [r0+r1*1-1]
add r2d, r3d
movzx r3d, byte [r0+r1*2-1]
add r2d, r3d
lea r0, [r0+r1*2]
movd m2, r2d ; s2
movzx r2d, byte [r0+r1*1-1]
movzx r3d, byte [r0+r1*2-1]
lea r0, [r0+r1*2]
add r2d, r3d
movzx r3d, byte [r0+r1*1-1]
add r2d, r3d
movzx r3d, byte [r0+r1*2-1]
add r2d, r3d
movd m3, r2d ; s3
punpcklwd m0, m1
mov r0, r4
punpcklwd m2, m3
punpckldq m0, m2 ; s0, s1, s2, s3
pshufw m3, m0, 11110110b ; s2, s1, s3, s3
lea r2, [r0+r1*2]
pshufw m0, m0, 01110100b ; s0, s1, s3, s1
paddw m0, m3
lea r3, [r2+r1*2]
psrlw m0, 2
pavgw m0, m7 ; s0+s2, s1, s3, s1+s3
lea r4, [r3+r1*2]
packuswb m0, m0
punpcklbw m0, m0
movq m1, m0
punpcklbw m0, m0
punpckhbw m1, m1
movq [r0+r1*1], m0
movq [r0+r1*2], m0
movq [r2+r1*1], m0
movq [r2+r1*2], m0
movq [r3+r1*1], m1
movq [r3+r1*2], m1
movq [r4+r1*1], m1
movq [r4+r1*2], m1
RET
%endif
;-----------------------------------------------------------------------------
; void pred8x8_dc_rv40(uint8_t *src, int stride)
;-----------------------------------------------------------------------------

2
libavcodec/x86/h264_intrapred_init.c
View File

@ -46,6 +46,7 @@ void ff_pred16x16_tm_vp8_mmxext (uint8_t *src, int stride);
void ff_pred16x16_tm_vp8_sse2 (uint8_t *src, int stride);
void ff_pred8x8_top_dc_mmxext (uint8_t *src, int stride);
void ff_pred8x8_dc_rv40_mmxext (uint8_t *src, int stride);
void ff_pred8x8_dc_mmxext (uint8_t *src, int stride);
void ff_pred8x8_vertical_mmx (uint8_t *src, int stride);
void ff_pred8x8_horizontal_mmx (uint8_t *src, int stride);
void ff_pred8x8_horizontal_mmxext (uint8_t *src, int stride);
@ -101,6 +102,7 @@ void ff_h264_pred_init_x86(H264PredContext *h, int codec_id)
h->pred4x4 [DIAG_DOWN_LEFT_PRED ] = ff_pred4x4_down_left_mmxext;
if (codec_id == CODEC_ID_SVQ3 || codec_id == CODEC_ID_H264) {
h->pred8x8 [TOP_DC_PRED8x8 ] = ff_pred8x8_top_dc_mmxext;
h->pred8x8 [DC_PRED8x8 ] = ff_pred8x8_dc_mmxext;
}
#endif
if (codec_id == CODEC_ID_VP8) {