mirror of https://git.ffmpeg.org/ffmpeg.git
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
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@ -865,6 +865,68 @@ cglobal pred8x8_top_dc_mmxext, 2,5
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RET
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%endif
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;-----------------------------------------------------------------------------
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; void pred8x8_dc_mmxext(uint8_t *src, int stride)
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;-----------------------------------------------------------------------------
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%ifdef CONFIG_GPL
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INIT_MMX
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cglobal pred8x8_dc_mmxext, 2,5
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sub r0, r1
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pxor m7, m7
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movd m0, [r0+0]
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movd m1, [r0+4]
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psadbw m0, m7 ; s0
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mov r4, r0
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psadbw m1, m7 ; s1
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movzx r2d, byte [r0+r1*1-1]
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movzx r3d, byte [r0+r1*2-1]
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lea r0, [r0+r1*2]
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add r2d, r3d
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movzx r3d, byte [r0+r1*1-1]
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add r2d, r3d
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movzx r3d, byte [r0+r1*2-1]
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add r2d, r3d
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lea r0, [r0+r1*2]
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movd m2, r2d ; s2
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movzx r2d, byte [r0+r1*1-1]
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movzx r3d, byte [r0+r1*2-1]
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lea r0, [r0+r1*2]
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add r2d, r3d
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movzx r3d, byte [r0+r1*1-1]
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add r2d, r3d
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movzx r3d, byte [r0+r1*2-1]
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add r2d, r3d
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movd m3, r2d ; s3
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punpcklwd m0, m1
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mov r0, r4
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punpcklwd m2, m3
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punpckldq m0, m2 ; s0, s1, s2, s3
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pshufw m3, m0, 11110110b ; s2, s1, s3, s3
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lea r2, [r0+r1*2]
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pshufw m0, m0, 01110100b ; s0, s1, s3, s1
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paddw m0, m3
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lea r3, [r2+r1*2]
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psrlw m0, 2
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pavgw m0, m7 ; s0+s2, s1, s3, s1+s3
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lea r4, [r3+r1*2]
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packuswb m0, m0
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punpcklbw m0, m0
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movq m1, m0
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punpcklbw m0, m0
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punpckhbw m1, m1
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movq [r0+r1*1], m0
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movq [r0+r1*2], m0
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movq [r2+r1*1], m0
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movq [r2+r1*2], m0
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movq [r3+r1*1], m1
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movq [r3+r1*2], m1
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movq [r4+r1*1], m1
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movq [r4+r1*2], m1
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RET
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%endif
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;-----------------------------------------------------------------------------
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; void pred8x8_dc_rv40(uint8_t *src, int stride)
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;-----------------------------------------------------------------------------
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@ -46,6 +46,7 @@ void ff_pred16x16_tm_vp8_mmxext (uint8_t *src, int stride);
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void ff_pred16x16_tm_vp8_sse2 (uint8_t *src, int stride);
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void ff_pred8x8_top_dc_mmxext (uint8_t *src, int stride);
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void ff_pred8x8_dc_rv40_mmxext (uint8_t *src, int stride);
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void ff_pred8x8_dc_mmxext (uint8_t *src, int stride);
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void ff_pred8x8_vertical_mmx (uint8_t *src, int stride);
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void ff_pred8x8_horizontal_mmx (uint8_t *src, int stride);
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void ff_pred8x8_horizontal_mmxext (uint8_t *src, int stride);
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@ -101,6 +102,7 @@ void ff_h264_pred_init_x86(H264PredContext *h, int codec_id)
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h->pred4x4 [DIAG_DOWN_LEFT_PRED ] = ff_pred4x4_down_left_mmxext;
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if (codec_id == CODEC_ID_SVQ3 || codec_id == CODEC_ID_H264) {
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h->pred8x8 [TOP_DC_PRED8x8 ] = ff_pred8x8_top_dc_mmxext;
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h->pred8x8 [DC_PRED8x8 ] = ff_pred8x8_dc_mmxext;
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}
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#endif
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if (codec_id == CODEC_ID_VP8) {
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