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Diffstat (limited to 'media/libtheora/lib/x86_vc/mmxloop.h')
| -rw-r--r-- | media/libtheora/lib/x86_vc/mmxloop.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/media/libtheora/lib/x86_vc/mmxloop.h b/media/libtheora/lib/x86_vc/mmxloop.h new file mode 100644 index 0000000000..2561fca2ae --- /dev/null +++ b/media/libtheora/lib/x86_vc/mmxloop.h @@ -0,0 +1,219 @@ +#if !defined(_x86_vc_mmxloop_H) +# define _x86_vc_mmxloop_H (1) +# include <stddef.h> +# include "x86int.h" + +#if defined(OC_X86_ASM) + +/*On entry, mm0={a0,...,a7}, mm1={b0,...,b7}, mm2={c0,...,c7}, mm3={d0,...d7}. + On exit, mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)} and + mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}; mm0 and mm3 are clobbered.*/ +#define OC_LOOP_FILTER8_MMX __asm{ \ + /*mm7=0*/ \ + __asm pxor mm7,mm7 \ + /*mm6:mm0={a0,...,a7}*/ \ + __asm movq mm6,mm0 \ + __asm punpcklbw mm0,mm7 \ + __asm punpckhbw mm6,mm7 \ + /*mm3:mm5={d0,...,d7}*/ \ + __asm movq mm5,mm3 \ + __asm punpcklbw mm3,mm7 \ + __asm punpckhbw mm5,mm7 \ + /*mm6:mm0={a0-d0,...,a7-d7}*/ \ + __asm psubw mm0,mm3 \ + __asm psubw mm6,mm5 \ + /*mm3:mm1={b0,...,b7}*/ \ + __asm movq mm3,mm1 \ + __asm punpcklbw mm1,mm7 \ + __asm movq mm4,mm2 \ + __asm punpckhbw mm3,mm7 \ + /*mm5:mm4={c0,...,c7}*/ \ + __asm movq mm5,mm2 \ + __asm punpcklbw mm4,mm7 \ + __asm punpckhbw mm5,mm7 \ + /*mm7={3}x4 \ + mm5:mm4={c0-b0,...,c7-b7}*/ \ + __asm pcmpeqw mm7,mm7 \ + __asm psubw mm4,mm1 \ + __asm psrlw mm7,14 \ + __asm psubw mm5,mm3 \ + /*Scale by 3.*/ \ + __asm pmullw mm4,mm7 \ + __asm pmullw mm5,mm7 \ + /*mm7={4}x4 \ + mm5:mm4=f={a0-d0+3*(c0-b0),...,a7-d7+3*(c7-b7)}*/ \ + __asm psrlw mm7,1 \ + __asm paddw mm4,mm0 \ + __asm psllw mm7,2 \ + __asm movq mm0,[LL] \ + __asm paddw mm5,mm6 \ + /*R_i has the range [-127,128], so we compute -R_i instead. \ + mm4=-R_i=-(f+4>>3)=0xFF^(f-4>>3)*/ \ + __asm psubw mm4,mm7 \ + __asm psubw mm5,mm7 \ + __asm psraw mm4,3 \ + __asm psraw mm5,3 \ + __asm pcmpeqb mm7,mm7 \ + __asm packsswb mm4,mm5 \ + __asm pxor mm6,mm6 \ + __asm pxor mm4,mm7 \ + __asm packuswb mm1,mm3 \ + /*Now compute lflim of -mm4 cf. Section 7.10 of the sepc.*/ \ + /*There's no unsigned byte+signed byte with unsigned saturation op code, so \ + we have to split things by sign (the other option is to work in 16 bits, \ + but working in 8 bits gives much better parallelism). \ + We compute abs(R_i), but save a mask of which terms were negative in mm6. \ + Then we compute mm4=abs(lflim(R_i,L))=min(abs(R_i),max(2*L-abs(R_i),0)). \ + Finally, we split mm4 into positive and negative pieces using the mask in \ + mm6, and add and subtract them as appropriate.*/ \ + /*mm4=abs(-R_i)*/ \ + /*mm7=255-2*L*/ \ + __asm pcmpgtb mm6,mm4 \ + __asm psubb mm7,mm0 \ + __asm pxor mm4,mm6 \ + __asm psubb mm7,mm0 \ + __asm psubb mm4,mm6 \ + /*mm7=255-max(2*L-abs(R_i),0)*/ \ + __asm paddusb mm7,mm4 \ + /*mm4=min(abs(R_i),max(2*L-abs(R_i),0))*/ \ + __asm paddusb mm4,mm7 \ + __asm psubusb mm4,mm7 \ + /*Now split mm4 by the original sign of -R_i.*/ \ + __asm movq mm5,mm4 \ + __asm pand mm4,mm6 \ + __asm pandn mm6,mm5 \ + /*mm1={b0+lflim(R_0,L),...,b7+lflim(R_7,L)}*/ \ + /*mm2={c0-lflim(R_0,L),...,c7-lflim(R_7,L)}*/ \ + __asm paddusb mm1,mm4 \ + __asm psubusb mm2,mm4 \ + __asm psubusb mm1,mm6 \ + __asm paddusb mm2,mm6 \ +} + +#define OC_LOOP_FILTER_V_MMX(_pix,_ystride,_ll) \ + do{ \ + /*Used local variable pix__ in order to fix compilation errors like: \ + "error C2425: 'SHL' : non-constant expression in 'second operand'".*/ \ + unsigned char *pix__; \ + unsigned char *ll__; \ + ll__=(_ll); \ + pix__=(_pix); \ + __asm mov YSTRIDE,_ystride \ + __asm mov LL,ll__ \ + __asm mov PIX,pix__ \ + __asm sub PIX,YSTRIDE \ + __asm sub PIX,YSTRIDE \ + /*mm0={a0,...,a7}*/ \ + __asm movq mm0,[PIX] \ + /*ystride3=_ystride*3*/ \ + __asm lea YSTRIDE3,[YSTRIDE+YSTRIDE*2] \ + /*mm3={d0,...,d7}*/ \ + __asm movq mm3,[PIX+YSTRIDE3] \ + /*mm1={b0,...,b7}*/ \ + __asm movq mm1,[PIX+YSTRIDE] \ + /*mm2={c0,...,c7}*/ \ + __asm movq mm2,[PIX+YSTRIDE*2] \ + OC_LOOP_FILTER8_MMX \ + /*Write it back out.*/ \ + __asm movq [PIX+YSTRIDE],mm1 \ + __asm movq [PIX+YSTRIDE*2],mm2 \ + } \ + while(0) + +#define OC_LOOP_FILTER_H_MMX(_pix,_ystride,_ll) \ + do{ \ + /*Used local variable ll__ in order to fix compilation errors like: \ + "error C2443: operand size conflict".*/ \ + unsigned char *ll__; \ + unsigned char *pix__; \ + ll__=(_ll); \ + pix__=(_pix)-2; \ + __asm mov PIX,pix__ \ + __asm mov YSTRIDE,_ystride \ + __asm mov LL,ll__ \ + /*x x x x d0 c0 b0 a0*/ \ + __asm movd mm0,[PIX] \ + /*x x x x d1 c1 b1 a1*/ \ + __asm movd mm1,[PIX+YSTRIDE] \ + /*ystride3=_ystride*3*/ \ + __asm lea YSTRIDE3,[YSTRIDE+YSTRIDE*2] \ + /*x x x x d2 c2 b2 a2*/ \ + __asm movd mm2,[PIX+YSTRIDE*2] \ + /*x x x x d3 c3 b3 a3*/ \ + __asm lea D,[PIX+YSTRIDE*4] \ + __asm movd mm3,[PIX+YSTRIDE3] \ + /*x x x x d4 c4 b4 a4*/ \ + __asm movd mm4,[D] \ + /*x x x x d5 c5 b5 a5*/ \ + __asm movd mm5,[D+YSTRIDE] \ + /*x x x x d6 c6 b6 a6*/ \ + __asm movd mm6,[D+YSTRIDE*2] \ + /*x x x x d7 c7 b7 a7*/ \ + __asm movd mm7,[D+YSTRIDE3] \ + /*mm0=d1 d0 c1 c0 b1 b0 a1 a0*/ \ + __asm punpcklbw mm0,mm1 \ + /*mm2=d3 d2 c3 c2 b3 b2 a3 a2*/ \ + __asm punpcklbw mm2,mm3 \ + /*mm3=d1 d0 c1 c0 b1 b0 a1 a0*/ \ + __asm movq mm3,mm0 \ + /*mm0=b3 b2 b1 b0 a3 a2 a1 a0*/ \ + __asm punpcklwd mm0,mm2 \ + /*mm3=d3 d2 d1 d0 c3 c2 c1 c0*/ \ + __asm punpckhwd mm3,mm2 \ + /*mm1=b3 b2 b1 b0 a3 a2 a1 a0*/ \ + __asm movq mm1,mm0 \ + /*mm4=d5 d4 c5 c4 b5 b4 a5 a4*/ \ + __asm punpcklbw mm4,mm5 \ + /*mm6=d7 d6 c7 c6 b7 b6 a7 a6*/ \ + __asm punpcklbw mm6,mm7 \ + /*mm5=d5 d4 c5 c4 b5 b4 a5 a4*/ \ + __asm movq mm5,mm4 \ + /*mm4=b7 b6 b5 b4 a7 a6 a5 a4*/ \ + __asm punpcklwd mm4,mm6 \ + /*mm5=d7 d6 d5 d4 c7 c6 c5 c4*/ \ + __asm punpckhwd mm5,mm6 \ + /*mm2=d3 d2 d1 d0 c3 c2 c1 c0*/ \ + __asm movq mm2,mm3 \ + /*mm0=a7 a6 a5 a4 a3 a2 a1 a0*/ \ + __asm punpckldq mm0,mm4 \ + /*mm1=b7 b6 b5 b4 b3 b2 b1 b0*/ \ + __asm punpckhdq mm1,mm4 \ + /*mm2=c7 c6 c5 c4 c3 c2 c1 c0*/ \ + __asm punpckldq mm2,mm5 \ + /*mm3=d7 d6 d5 d4 d3 d2 d1 d0*/ \ + __asm punpckhdq mm3,mm5 \ + OC_LOOP_FILTER8_MMX \ + /*mm2={b0+R_0'',...,b7+R_7''}*/ \ + __asm movq mm0,mm1 \ + /*mm1={b0+R_0'',c0-R_0'',...,b3+R_3'',c3-R_3''}*/ \ + __asm punpcklbw mm1,mm2 \ + /*mm2={b4+R_4'',c4-R_4'',...,b7+R_7'',c7-R_7''}*/ \ + __asm punpckhbw mm0,mm2 \ + /*[d]=c1 b1 c0 b0*/ \ + __asm movd D,mm1 \ + __asm mov [PIX+1],D_WORD \ + __asm psrlq mm1,32 \ + __asm shr D,16 \ + __asm mov [PIX+YSTRIDE+1],D_WORD \ + /*[d]=c3 b3 c2 b2*/ \ + __asm movd D,mm1 \ + __asm mov [PIX+YSTRIDE*2+1],D_WORD \ + __asm shr D,16 \ + __asm mov [PIX+YSTRIDE3+1],D_WORD \ + __asm lea PIX,[PIX+YSTRIDE*4] \ + /*[d]=c5 b5 c4 b4*/ \ + __asm movd D,mm0 \ + __asm mov [PIX+1],D_WORD \ + __asm psrlq mm0,32 \ + __asm shr D,16 \ + __asm mov [PIX+YSTRIDE+1],D_WORD \ + /*[d]=c7 b7 c6 b6*/ \ + __asm movd D,mm0 \ + __asm mov [PIX+YSTRIDE*2+1],D_WORD \ + __asm shr D,16 \ + __asm mov [PIX+YSTRIDE3+1],D_WORD \ + } \ + while(0) + +# endif +#endif |