static inline int RENAME(yuv420_rgb24)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, int srcSliceH, uint8_t* dst[], int dstStride[]){ int y, h_size; if(c->srcFormat == PIX_FMT_YUV422P){ srcStride[1] *= 2; srcStride[2] *= 2; } h_size= (c->dstW+7)&~7; if(h_size*3 > dstStride[0]) h_size-=8; __asm__ __volatile__ ("pxor %mm4, %mm4;" /* zero mm4 */ ); for (y= 0; y<srcSliceH; y++ ) { uint8_t *_image = dst[0] + (y+srcSliceY)*dstStride[0]; uint8_t *_py = src[0] + y*srcStride[0]; uint8_t *_pu = src[1] + (y>>1)*srcStride[1]; uint8_t *_pv = src[2] + (y>>1)*srcStride[2]; long index= -h_size/2; /* this mmx assembly code deals with SINGLE scan line at a time, it convert 8 pixels in each iteration */ __asm__ __volatile__ ( /* load data for start of next scan line */ "movd (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */ "movd (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */ "movq (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */ // ".balign 16 \n\t" "1: \n\t" YUV2RGB /* mm0=B, %%mm2=G, %%mm1=R */ #ifdef HAVE_MMX2 "movq "MANGLE(M24A)", %%mm4 \n\t" "movq "MANGLE(M24C)", %%mm7 \n\t" "pshufw $0x50, %%mm0, %%mm5 \n\t" /* B3 B2 B3 B2 B1 B0 B1 B0 */ "pshufw $0x50, %%mm2, %%mm3 \n\t" /* G3 G2 G3 G2 G1 G0 G1 G0 */ "pshufw $0x00, %%mm1, %%mm6 \n\t" /* R1 R0 R1 R0 R1 R0 R1 R0 */ "pand %%mm4, %%mm5 \n\t" /* B2 B1 B0 */ "pand %%mm4, %%mm3 \n\t" /* G2 G1 G0 */ "pand %%mm7, %%mm6 \n\t" /* R1 R0 */ "psllq $8, %%mm3 \n\t" /* G2 G1 G0 */ "por %%mm5, %%mm6 \n\t" "por %%mm3, %%mm6 \n\t" MOVNTQ" %%mm6, (%1) \n\t" "psrlq $8, %%mm2 \n\t" /* 00 G7 G6 G5 G4 G3 G2 G1 */ "pshufw $0xA5, %%mm0, %%mm5 \n\t" /* B5 B4 B5 B4 B3 B2 B3 B2 */ "pshufw $0x55, %%mm2, %%mm3 \n\t" /* G4 G3 G4 G3 G4 G3 G4 G3 */ "pshufw $0xA5, %%mm1, %%mm6 \n\t" /* R5 R4 R5 R4 R3 R2 R3 R2 */ "pand "MANGLE(M24B)", %%mm5 \n\t" /* B5 B4 B3 */ "pand %%mm7, %%mm3 \n\t" /* G4 G3 */ "pand %%mm4, %%mm6 \n\t" /* R4 R3 R2 */ "por %%mm5, %%mm3 \n\t" /* B5 G4 B4 G3 B3 */ "por %%mm3, %%mm6 \n\t" MOVNTQ" %%mm6, 8(%1) \n\t" "pshufw $0xFF, %%mm0, %%mm5 \n\t" /* B7 B6 B7 B6 B7 B6 B6 B7 */ "pshufw $0xFA, %%mm2, %%mm3 \n\t" /* 00 G7 00 G7 G6 G5 G6 G5 */ "pshufw $0xFA, %%mm1, %%mm6 \n\t" /* R7 R6 R7 R6 R5 R4 R5 R4 */ "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */ "pand %%mm7, %%mm5 \n\t" /* B7 B6 */ "pand %%mm4, %%mm3 \n\t" /* G7 G6 G5 */ "pand "MANGLE(M24B)", %%mm6 \n\t" /* R7 R6 R5 */ "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */ \ "por %%mm5, %%mm3 \n\t" "por %%mm3, %%mm6 \n\t" MOVNTQ" %%mm6, 16(%1) \n\t" "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */ "pxor %%mm4, %%mm4 \n\t" #else "pxor %%mm4, %%mm4 \n\t" "movq %%mm0, %%mm5 \n\t" /* B */ "movq %%mm1, %%mm6 \n\t" /* R */ "punpcklbw %%mm2, %%mm0 \n\t" /* GBGBGBGB 0 */ "punpcklbw %%mm4, %%mm1 \n\t" /* 0R0R0R0R 0 */ "punpckhbw %%mm2, %%mm5 \n\t" /* GBGBGBGB 2 */ "punpckhbw %%mm4, %%mm6 \n\t" /* 0R0R0R0R 2 */ "movq %%mm0, %%mm7 \n\t" /* GBGBGBGB 0 */ "movq %%mm5, %%mm3 \n\t" /* GBGBGBGB 2 */ "punpcklwd %%mm1, %%mm7 \n\t" /* 0RGB0RGB 0 */ "punpckhwd %%mm1, %%mm0 \n\t" /* 0RGB0RGB 1 */ "punpcklwd %%mm6, %%mm5 \n\t" /* 0RGB0RGB 2 */ "punpckhwd %%mm6, %%mm3 \n\t" /* 0RGB0RGB 3 */ "movq %%mm7, %%mm2 \n\t" /* 0RGB0RGB 0 */ "movq %%mm0, %%mm6 \n\t" /* 0RGB0RGB 1 */ "movq %%mm5, %%mm1 \n\t" /* 0RGB0RGB 2 */ "movq %%mm3, %%mm4 \n\t" /* 0RGB0RGB 3 */ "psllq $40, %%mm7 \n\t" /* RGB00000 0 */ "psllq $40, %%mm0 \n\t" /* RGB00000 1 */ "psllq $40, %%mm5 \n\t" /* RGB00000 2 */ "psllq $40, %%mm3 \n\t" /* RGB00000 3 */ "punpckhdq %%mm2, %%mm7 \n\t" /* 0RGBRGB0 0 */ "punpckhdq %%mm6, %%mm0 \n\t" /* 0RGBRGB0 1 */ "punpckhdq %%mm1, %%mm5 \n\t" /* 0RGBRGB0 2 */ "punpckhdq %%mm4, %%mm3 \n\t" /* 0RGBRGB0 3 */ "psrlq $8, %%mm7 \n\t" /* 00RGBRGB 0 */ "movq %%mm0, %%mm6 \n\t" /* 0RGBRGB0 1 */ "psllq $40, %%mm0 \n\t" /* GB000000 1 */ "por %%mm0, %%mm7 \n\t" /* GBRGBRGB 0 */ MOVNTQ" %%mm7, (%1) \n\t" "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */ "psrlq $24, %%mm6 \n\t" /* 0000RGBR 1 */ "movq %%mm5, %%mm1 \n\t" /* 0RGBRGB0 2 */ "psllq $24, %%mm5 \n\t" /* BRGB0000 2 */ "por %%mm5, %%mm6 \n\t" /* BRGBRGBR 1 */ MOVNTQ" %%mm6, 8(%1) \n\t" "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */ "psrlq $40, %%mm1 \n\t" /* 000000RG 2 */ "psllq $8, %%mm3 \n\t" /* RGBRGB00 3 */ "por %%mm3, %%mm1 \n\t" /* RGBRGBRG 2 */ MOVNTQ" %%mm1, 16(%1) \n\t" "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */ "pxor %%mm4, %%mm4 \n\t" #endif "add $24, %1 \n\t" "add $4, %0 \n\t" " js 1b \n\t" : "+r" (index), "+r" (_image) : "r" (_pu - index), "r" (_pv - index), "r"(&c->redDither), "r" (_py - 2*index) ); } __asm__ __volatile__ (EMMS); return srcSliceH; }