static inline void RENAME(yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst, unsigned int width, unsigned int height, int lumStride, int chromStride, int srcStride) { unsigned y; const unsigned chromWidth= width>>1; for(y=0; y<height; y+=2) { #ifdef HAVE_MMX asm volatile( "xor %%"REG_a", %%"REG_a" \n\t" "pcmpeqw %%mm7, %%mm7 \n\t" "psrlw $8, %%mm7 \n\t" // FF,00,FF,00... ".balign 16 \n\t" "1: \n\t" PREFETCH" 64(%0, %%"REG_a", 4) \n\t" "movq (%0, %%"REG_a", 4), %%mm0 \n\t" // YUYV YUYV(0) "movq 8(%0, %%"REG_a", 4), %%mm1\n\t" // YUYV YUYV(4) "movq %%mm0, %%mm2 \n\t" // YUYV YUYV(0) "movq %%mm1, %%mm3 \n\t" // YUYV YUYV(4) "psrlw $8, %%mm0 \n\t" // U0V0 U0V0(0) "psrlw $8, %%mm1 \n\t" // U0V0 U0V0(4) "pand %%mm7, %%mm2 \n\t" // Y0Y0 Y0Y0(0) "pand %%mm7, %%mm3 \n\t" // Y0Y0 Y0Y0(4) "packuswb %%mm1, %%mm0 \n\t" // UVUV UVUV(0) "packuswb %%mm3, %%mm2 \n\t" // YYYY YYYY(0) MOVNTQ" %%mm2, (%1, %%"REG_a", 2)\n\t" "movq 16(%0, %%"REG_a", 4), %%mm1\n\t" // YUYV YUYV(8) "movq 24(%0, %%"REG_a", 4), %%mm2\n\t" // YUYV YUYV(12) "movq %%mm1, %%mm3 \n\t" // YUYV YUYV(8) "movq %%mm2, %%mm4 \n\t" // YUYV YUYV(12) "psrlw $8, %%mm1 \n\t" // U0V0 U0V0(8) "psrlw $8, %%mm2 \n\t" // U0V0 U0V0(12) "pand %%mm7, %%mm3 \n\t" // Y0Y0 Y0Y0(8) "pand %%mm7, %%mm4 \n\t" // Y0Y0 Y0Y0(12) "packuswb %%mm2, %%mm1 \n\t" // UVUV UVUV(8) "packuswb %%mm4, %%mm3 \n\t" // YYYY YYYY(8) MOVNTQ" %%mm3, 8(%1, %%"REG_a", 2)\n\t" "movq %%mm0, %%mm2 \n\t" // UVUV UVUV(0) "movq %%mm1, %%mm3 \n\t" // UVUV UVUV(8) "psrlw $8, %%mm0 \n\t" // V0V0 V0V0(0) "psrlw $8, %%mm1 \n\t" // V0V0 V0V0(8) "pand %%mm7, %%mm2 \n\t" // U0U0 U0U0(0) "pand %%mm7, %%mm3 \n\t" // U0U0 U0U0(8) "packuswb %%mm1, %%mm0 \n\t" // VVVV VVVV(0) "packuswb %%mm3, %%mm2 \n\t" // UUUU UUUU(0) MOVNTQ" %%mm0, (%3, %%"REG_a") \n\t" MOVNTQ" %%mm2, (%2, %%"REG_a") \n\t" "add $8, %%"REG_a" \n\t" "cmp %4, %%"REG_a" \n\t" " jb 1b \n\t" ::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "g" ((long)chromWidth) : "memory", "%"REG_a ); ydst += lumStride; src += srcStride; asm volatile( "xor %%"REG_a", %%"REG_a" \n\t" ".balign 16 \n\t" "1: \n\t" PREFETCH" 64(%0, %%"REG_a", 4) \n\t" "movq (%0, %%"REG_a", 4), %%mm0 \n\t" // YUYV YUYV(0) "movq 8(%0, %%"REG_a", 4), %%mm1\n\t" // YUYV YUYV(4) "movq 16(%0, %%"REG_a", 4), %%mm2\n\t" // YUYV YUYV(8) "movq 24(%0, %%"REG_a", 4), %%mm3\n\t" // YUYV YUYV(12) "pand %%mm7, %%mm0 \n\t" // Y0Y0 Y0Y0(0) "pand %%mm7, %%mm1 \n\t" // Y0Y0 Y0Y0(4) "pand %%mm7, %%mm2 \n\t" // Y0Y0 Y0Y0(8) "pand %%mm7, %%mm3 \n\t" // Y0Y0 Y0Y0(12) "packuswb %%mm1, %%mm0 \n\t" // YYYY YYYY(0) "packuswb %%mm3, %%mm2 \n\t" // YYYY YYYY(8) MOVNTQ" %%mm0, (%1, %%"REG_a", 2)\n\t" MOVNTQ" %%mm2, 8(%1, %%"REG_a", 2)\n\t" "add $8, %%"REG_a" \n\t" "cmp %4, %%"REG_a" \n\t" " jb 1b \n\t" ::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "g" ((long)chromWidth) : "memory", "%"REG_a ); #else unsigned i; for(i=0; i<chromWidth; i++) { ydst[2*i+0] = src[4*i+0]; udst[i] = src[4*i+1]; ydst[2*i+1] = src[4*i+2]; vdst[i] = src[4*i+3]; } ydst += lumStride; src += srcStride; for(i=0; i<chromWidth; i++) { ydst[2*i+0] = src[4*i+0]; ydst[2*i+1] = src[4*i+2]; } #endif udst += chromStride; vdst += chromStride; ydst += lumStride; src += srcStride; } #ifdef HAVE_MMX asm volatile( EMMS" \n\t" SFENCE" \n\t" :::"memory"); #endif }