Port pred8x8l_horizontal_up_mmxext/ssse3 (H.264 intra prediction) from x264

(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 26149 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 95 insertions, 0 deletions

diff --git a/libavcodec/x86/h264_intrapred.asm b/libavcodec/x86/h264_intrapred.asm
index 1d1c76452a..a99f044b6f 100644
--- a/libavcodec/x86/h264_intrapred.asm
+++ b/libavcodec/x86/h264_intrapred.asm
@@ -2046,6 +2046,101 @@ PRED8x8L_VERTICAL_LEFT ssse3
 %endif
 
 ;-----------------------------------------------------------------------------
+; void pred8x8l_horizontal_up(uint8_t *src, int has_topleft, int has_topright, int stride)
+;-----------------------------------------------------------------------------
+%ifdef CONFIG_GPL
+%macro PRED8x8L_HORIZONTAL_UP 1
+cglobal pred8x8l_horizontal_up_%1, 4,4
+    sub          r0, r3
+    lea          r2, [r0+r3*2]
+    movq        mm0, [r0+r3*1-8]
+    punpckhbw   mm0, [r0+r3*0-8]
+    movq        mm1, [r2+r3*1-8]
+    punpckhbw   mm1, [r0+r3*2-8]
+    mov          r2, r0
+    punpckhwd   mm1, mm0
+    lea          r0, [r0+r3*4]
+    movq        mm2, [r0+r3*1-8]
+    punpckhbw   mm2, [r0+r3*0-8]
+    lea          r0, [r0+r3*2]
+    movq        mm3, [r0+r3*1-8]
+    punpckhbw   mm3, [r0+r3*0-8]
+    punpckhwd   mm3, mm2
+    punpckhdq   mm3, mm1
+    lea          r0, [r0+r3*2]
+    movq        mm0, [r0+r3*0-8]
+    movq        mm1, [r2]
+    mov          r0, r2
+    movq        mm4, mm3
+    movq        mm2, mm3
+    PALIGNR     mm4, mm0, 7, mm0
+    PALIGNR     mm1, mm2, 1, mm2
+    test        r1, r1
+    jnz .do_left
+.fix_lt_1:
+    movq        mm5, mm3
+    pxor        mm5, mm4
+    psrlq       mm5, 56
+    psllq       mm5, 48
+    pxor        mm1, mm5
+.do_left:
+    movq       mm0, mm4
+    PRED4x4_LOWPASS mm2, mm1, mm4, mm3, mm5
+    movq       mm4, mm0
+    movq       mm7, mm2
+    PRED4x4_LOWPASS mm1, mm3, mm0, mm4, mm5
+    psllq      mm1, 56
+    PALIGNR    mm7, mm1, 7, mm3
+    lea         r1, [r0+r3*2]
+    pshufw     mm0, mm7, 00011011b ; l6 l7 l4 l5 l2 l3 l0 l1
+    psllq      mm7, 56             ; l7 .. .. .. .. .. .. ..
+    movq       mm2, mm0
+    psllw      mm0, 8
+    psrlw      mm2, 8
+    por        mm2, mm0            ; l7 l6 l5 l4 l3 l2 l1 l0
+    movq       mm3, mm2
+    movq       mm4, mm2
+    movq       mm5, mm2
+    psrlq      mm2, 8
+    psrlq      mm3, 16
+    lea         r2, [r1+r3*2]
+    por        mm2, mm7            ; l7 l7 l6 l5 l4 l3 l2 l1
+    punpckhbw  mm7, mm7
+    por        mm3, mm7            ; l7 l7 l7 l6 l5 l4 l3 l2
+    pavgb      mm4, mm2
+    PRED4x4_LOWPASS mm1, mm3, mm5, mm2, mm6
+    movq       mm5, mm4
+    punpcklbw  mm4, mm1            ; p4 p3 p2 p1
+    punpckhbw  mm5, mm1            ; p8 p7 p6 p5
+    movq       mm6, mm5
+    movq       mm7, mm5
+    movq       mm0, mm5
+    PALIGNR    mm5, mm4, 2, mm1
+    pshufw     mm1, mm6, 11111001b
+    PALIGNR    mm6, mm4, 4, mm2
+    pshufw     mm2, mm7, 11111110b
+    PALIGNR    mm7, mm4, 6, mm3
+    pshufw     mm3, mm0, 11111111b
+    movq [r0+r3*1], mm4
+    movq [r0+r3*2], mm5
+    lea         r0, [r2+r3*2]
+    movq [r1+r3*1], mm6
+    movq [r1+r3*2], mm7
+    movq [r2+r3*1], mm0
+    movq [r2+r3*2], mm1
+    movq [r0+r3*1], mm2
+    movq [r0+r3*2], mm3
+    RET
+%endmacro
+
+INIT_MMX
+%define PALIGNR PALIGNR_MMX
+PRED8x8L_HORIZONTAL_UP mmxext
+%define PALIGNR PALIGNR_SSSE3
+PRED8x8L_HORIZONTAL_UP ssse3
+%endif
+
+;-----------------------------------------------------------------------------
 ; void pred4x4_dc_mmxext(uint8_t *src, const uint8_t *topright, int stride)
 ;-----------------------------------------------------------------------------