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FFmpeg/libswscale/yuv2rgb_template.c

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  1. /*

  2.  * yuv2rgb_mmx.c, software YUV to RGB converter with Intel MMX "technology"

  3.  *

  4.  * Copyright (C) 2000, Silicon Integrated System Corp.

  5.  *

  6.  * Author: Olie Lho <ollie@sis.com.tw>

  7.  *

  8.  * 15,24 bpp and dithering from Michael Niedermayer (michaelni@gmx.at)

  9.  * MMX/MMX2 Template stuff from Michael Niedermayer (needed for fast movntq support)

  10.  * context / deglobalize stuff by Michael Niedermayer

  11.  *

  12.  * This file is part of mpeg2dec, a free MPEG-2 video decoder

  13.  *

  14.  * mpeg2dec is free software; you can redistribute it and/or modify

  15.  * it under the terms of the GNU General Public License as published by

  16.  * the Free Software Foundation; either version 2, or (at your option)

  17.  * any later version.

  18.  *

  19.  * mpeg2dec is distributed in the hope that it will be useful,

  20.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  21.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  22.  * GNU General Public License for more details.

  23.  *

  24.  * You should have received a copy of the GNU General Public License

  25.  * along with mpeg2dec; if not, write to the Free Software

  26.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  27.  */

  28. 

  29. #undef MOVNTQ

  30. #undef EMMS

  31. #undef SFENCE

  32. 

  33. #if HAVE_AMD3DNOW

  34. /* On K6 femms is faster than emms. On K7 femms is directly mapped to emms. */

  35. #define EMMS     "femms"

  36. #else

  37. #define EMMS     "emms"

  38. #endif

  39. 

  40. #if HAVE_MMX2

  41. #define MOVNTQ "movntq"

  42. #define SFENCE "sfence"

  43. #else

  44. #define MOVNTQ "movq"

  45. #define SFENCE "/nop"

  46. #endif

  47. 

  48. #define YUV2RGB \

  49.     /* Do the multiply part of the conversion for even and odd pixels,

  50.        register usage:

  51.        mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels,

  52.        mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd pixels,

  53.        mm6 -> Y even, mm7 -> Y odd */\

  54.     /* convert the chroma part */\

  55.     "punpcklbw %%mm4, %%mm0;" /* scatter 4 Cb 00 u3 00 u2 00 u1 00 u0 */ \

  56.     "punpcklbw %%mm4, %%mm1;" /* scatter 4 Cr 00 v3 00 v2 00 v1 00 v0 */ \

  57. \

  58.     "psllw $3, %%mm0;" /* Promote precision */ \

  59.     "psllw $3, %%mm1;" /* Promote precision */ \

  60. \

  61.     "psubsw "U_OFFSET"(%4), %%mm0;" /* Cb -= 128 */ \

  62.     "psubsw "V_OFFSET"(%4), %%mm1;" /* Cr -= 128 */ \

  63. \

  64.     "movq %%mm0, %%mm2;" /* Copy 4 Cb 00 u3 00 u2 00 u1 00 u0 */ \

  65.     "movq %%mm1, %%mm3;" /* Copy 4 Cr 00 v3 00 v2 00 v1 00 v0 */ \

  66. \

  67.     "pmulhw "UG_COEFF"(%4), %%mm2;" /* Mul Cb with green coeff -> Cb green */ \

  68.     "pmulhw "VG_COEFF"(%4), %%mm3;" /* Mul Cr with green coeff -> Cr green */ \

  69. \

  70.     "pmulhw "UB_COEFF"(%4), %%mm0;" /* Mul Cb -> Cblue 00 b3 00 b2 00 b1 00 b0 */\

  71.     "pmulhw "VR_COEFF"(%4), %%mm1;" /* Mul Cr -> Cred 00 r3 00 r2 00 r1 00 r0 */\

  72. \

  73.     "paddsw %%mm3, %%mm2;" /* Cb green + Cr green -> Cgreen */\

  74. \

  75.     /* convert the luma part */\

  76.     "movq %%mm6, %%mm7;" /* Copy 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */\

  77.     "pand "MANGLE(mmx_00ffw)", %%mm6;" /* get Y even 00 Y6 00 Y4 00 Y2 00 Y0 */\

  78. \

  79.     "psrlw $8, %%mm7;" /* get Y odd 00 Y7 00 Y5 00 Y3 00 Y1 */\

  80. \

  81.     "psllw $3, %%mm6;" /* Promote precision */\

  82.     "psllw $3, %%mm7;" /* Promote precision */\

  83. \

  84.     "psubw "Y_OFFSET"(%4), %%mm6;" /* Y -= 16 */\

  85.     "psubw "Y_OFFSET"(%4), %%mm7;" /* Y -= 16 */\

  86. \

  87.     "pmulhw "Y_COEFF"(%4), %%mm6;" /* Mul 4 Y even 00 y6 00 y4 00 y2 00 y0 */\

  88.     "pmulhw "Y_COEFF"(%4), %%mm7;" /* Mul 4 Y odd 00 y7 00 y5 00 y3 00 y1 */\

  89. \

  90.     /* Do the addition part of the conversion for even and odd pixels,

  91.        register usage:

  92.        mm0 -> Cblue, mm1 -> Cred, mm2 -> Cgreen even pixels,

  93.        mm3 -> Cblue, mm4 -> Cred, mm5 -> Cgreen odd pixels,

  94.        mm6 -> Y even, mm7 -> Y odd */\

  95.     "movq %%mm0, %%mm3;" /* Copy Cblue */\

  96.     "movq %%mm1, %%mm4;" /* Copy Cred */\

  97.     "movq %%mm2, %%mm5;" /* Copy Cgreen */\

  98. \

  99.     "paddsw %%mm6, %%mm0;" /* Y even + Cblue 00 B6 00 B4 00 B2 00 B0 */\

  100.     "paddsw %%mm7, %%mm3;" /* Y odd + Cblue 00 B7 00 B5 00 B3 00 B1 */\

  101. \

  102.     "paddsw %%mm6, %%mm1;" /* Y even + Cred 00 R6 00 R4 00 R2 00 R0 */\

  103.     "paddsw %%mm7, %%mm4;" /* Y odd + Cred 00 R7 00 R5 00 R3 00 R1 */\

  104. \

  105.     "paddsw %%mm6, %%mm2;" /* Y even + Cgreen 00 G6 00 G4 00 G2 00 G0 */\

  106.     "paddsw %%mm7, %%mm5;" /* Y odd + Cgreen 00 G7 00 G5 00 G3 00 G1 */\

  107. \

  108.     /* Limit RGB even to 0..255 */\

  109.     "packuswb %%mm0, %%mm0;" /* B6 B4 B2 B0  B6 B4 B2 B0 */\

  110.     "packuswb %%mm1, %%mm1;" /* R6 R4 R2 R0  R6 R4 R2 R0 */\

  111.     "packuswb %%mm2, %%mm2;" /* G6 G4 G2 G0  G6 G4 G2 G0 */\

  112. \

  113.     /* Limit RGB odd to 0..255 */\

  114.     "packuswb %%mm3, %%mm3;" /* B7 B5 B3 B1  B7 B5 B3 B1 */\

  115.     "packuswb %%mm4, %%mm4;" /* R7 R5 R3 R1  R7 R5 R3 R1 */\

  116.     "packuswb %%mm5, %%mm5;" /* G7 G5 G3 G1  G7 G5 G3 G1 */\

  117. \

  118.     /* Interleave RGB even and odd */\

  119.     "punpcklbw %%mm3, %%mm0;" /* B7 B6 B5 B4 B3 B2 B1 B0 */\

  120.     "punpcklbw %%mm4, %%mm1;" /* R7 R6 R5 R4 R3 R2 R1 R0 */\

  121.     "punpcklbw %%mm5, %%mm2;" /* G7 G6 G5 G4 G3 G2 G1 G0 */\

  122. 

  123. 

  124. static inline int RENAME(yuv420_rgb16)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  125.                                        int srcSliceH, uint8_t* dst[], int dstStride[]){

  126.     int y, h_size;

  127. 

  128.     if(c->srcFormat == PIX_FMT_YUV422P){

  129.         srcStride[1] *= 2;

  130.         srcStride[2] *= 2;

  131.     }

  132. 

  133.     h_size= (c->dstW+7)&~7;

  134.     if(h_size*2 > FFABS(dstStride[0])) h_size-=8;

  135. 

  136.     __asm__ volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );

  137.     //printf("%X %X %X %X %X %X %X %X %X %X\n", (int)&c->redDither, (int)&c->blueDither, (int)src[0], (int)src[1], (int)src[2], (int)dst[0],

  138.     //srcStride[0],srcStride[1],srcStride[2],dstStride[0]);

  139.     for (y= 0; y<srcSliceH; y++ ) {

  140.         uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];

  141.         uint8_t *py = src[0] + y*srcStride[0];

  142.         uint8_t *pu = src[1] + (y>>1)*srcStride[1];

  143.         uint8_t *pv = src[2] + (y>>1)*srcStride[2];

  144.         long index= -h_size/2;

  145. 

  146.         c->blueDither= ff_dither8[y&1];

  147.         c->greenDither= ff_dither4[y&1];

  148.         c->redDither= ff_dither8[(y+1)&1];

  149.         /* This MMX assembly code deals with a SINGLE scan line at a time,

  150.          * it converts 8 pixels in each iteration. */

  151.         __asm__ volatile (

  152.         /* load data for start of next scan line */

  153.         "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  154.         "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  155.         "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  156.         //".balign 16     \n\t"

  157.         "1:             \n\t"

  158.         /* No speed difference on my p3@500 with prefetch,

  159.          * if it is faster for anyone with -benchmark then tell me.

  160.         PREFETCH" 64(%0) \n\t"

  161.         PREFETCH" 64(%1) \n\t"

  162.         PREFETCH" 64(%2) \n\t"

  163.         */

  164. YUV2RGB

  165. 

  166. #ifdef DITHER1XBPP

  167.         "paddusb "BLUE_DITHER"(%4), %%mm0;"

  168.         "paddusb "GREEN_DITHER"(%4), %%mm2;"

  169.         "paddusb "RED_DITHER"(%4), %%mm1;"

  170. #endif

  171.         /* mask unneeded bits off */

  172.         "pand "MANGLE(mmx_redmask)", %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */

  173.         "pand "MANGLE(mmx_grnmask)", %%mm2;" /* g7g6g5g4 g3g2_0_0 g7g6g5g4 g3g2_0_0 */

  174.         "pand "MANGLE(mmx_redmask)", %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */

  175. 

  176.         "psrlw   $3, %%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */

  177.         "pxor %%mm4, %%mm4;" /* zero mm4 */

  178. 

  179.         "movq %%mm0, %%mm5;" /* Copy B7-B0 */

  180.         "movq %%mm2, %%mm7;" /* Copy G7-G0 */

  181. 

  182.         /* convert RGB24 plane to RGB16 pack for pixel 0-3 */

  183.         "punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */

  184.         "punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */

  185. 

  186.         "psllw  $3, %%mm2;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */

  187.         "por %%mm2, %%mm0;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */

  188. 

  189.         "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  190.         MOVNTQ "      %%mm0, (%1);" /* store pixel 0-3 */

  191. 

  192.         /* convert RGB24 plane to RGB16 pack for pixel 0-3 */

  193.         "punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3g2_0_0 */

  194.         "punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */

  195. 

  196.         "psllw        $3, %%mm7;" /* 0_0_0_0 0_g7g6g5 g4g3g2_0 0_0_0_0 */

  197.         "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  198. 

  199.         "por       %%mm7, %%mm5;" /* r7r6r5r4 r3g7g6g5 g4g3g2b7 b6b5b4b3 */

  200.         "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  201. 

  202.         MOVNTQ "   %%mm5, 8 (%1);" /* store pixel 4-7 */

  203. 

  204.         "add $16, %1    \n\t"

  205.         "add  $4, %0    \n\t"

  206.         " js  1b        \n\t"

  207. 

  208.         : "+r" (index), "+r" (image)

  209.         : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)

  210.         );

  211.     }

  212. 

  213.     __asm__ volatile (EMMS);

  214. 

  215.     return srcSliceH;

  216. }

  217. 

  218. static inline int RENAME(yuv420_rgb15)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  219.                                        int srcSliceH, uint8_t* dst[], int dstStride[]){

  220.     int y, h_size;

  221. 

  222.     if(c->srcFormat == PIX_FMT_YUV422P){

  223.         srcStride[1] *= 2;

  224.         srcStride[2] *= 2;

  225.     }

  226. 

  227.     h_size= (c->dstW+7)&~7;

  228.     if(h_size*2 > FFABS(dstStride[0])) h_size-=8;

  229. 

  230.     __asm__ volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );

  231.     //printf("%X %X %X %X %X %X %X %X %X %X\n", (int)&c->redDither, (int)&c->blueDither, (int)src[0], (int)src[1], (int)src[2], (int)dst[0],

  232.     //srcStride[0],srcStride[1],srcStride[2],dstStride[0]);

  233.     for (y= 0; y<srcSliceH; y++ ) {

  234.         uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];

  235.         uint8_t *py = src[0] + y*srcStride[0];

  236.         uint8_t *pu = src[1] + (y>>1)*srcStride[1];

  237.         uint8_t *pv = src[2] + (y>>1)*srcStride[2];

  238.         long index= -h_size/2;

  239. 

  240.         c->blueDither= ff_dither8[y&1];

  241.         c->greenDither= ff_dither8[y&1];

  242.         c->redDither= ff_dither8[(y+1)&1];

  243.         /* This MMX assembly code deals with a SINGLE scan line at a time,

  244.          * it converts 8 pixels in each iteration. */

  245.         __asm__ volatile (

  246.         /* load data for start of next scan line */

  247.         "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  248.         "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  249.         "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  250.         //".balign 16     \n\t"

  251.         "1:             \n\t"

  252. YUV2RGB

  253. 

  254. #ifdef DITHER1XBPP

  255.         "paddusb "BLUE_DITHER"(%4), %%mm0  \n\t"

  256.         "paddusb "GREEN_DITHER"(%4), %%mm2  \n\t"

  257.         "paddusb "RED_DITHER"(%4), %%mm1  \n\t"

  258. #endif

  259. 

  260.         /* mask unneeded bits off */

  261.         "pand "MANGLE(mmx_redmask)", %%mm0;" /* b7b6b5b4 b3_0_0_0 b7b6b5b4 b3_0_0_0 */

  262.         "pand "MANGLE(mmx_redmask)", %%mm2;" /* g7g6g5g4 g3_0_0_0 g7g6g5g4 g3_0_0_0 */

  263.         "pand "MANGLE(mmx_redmask)", %%mm1;" /* r7r6r5r4 r3_0_0_0 r7r6r5r4 r3_0_0_0 */

  264. 

  265.         "psrlw   $3, %%mm0;" /* 0_0_0_b7 b6b5b4b3 0_0_0_b7 b6b5b4b3 */

  266.         "psrlw   $1, %%mm1;" /* 0_r7r6r5  r4r3_0_0 0_r7r6r5 r4r3_0_0 */

  267.         "pxor %%mm4, %%mm4;" /* zero mm4 */

  268. 

  269.         "movq %%mm0, %%mm5;" /* Copy B7-B0 */

  270.         "movq %%mm2, %%mm7;" /* Copy G7-G0 */

  271. 

  272.         /* convert RGB24 plane to RGB16 pack for pixel 0-3 */

  273.         "punpcklbw %%mm4, %%mm2;" /* 0_0_0_0 0_0_0_0 g7g6g5g4 g3_0_0_0 */

  274.         "punpcklbw %%mm1, %%mm0;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */

  275. 

  276.         "psllw  $2, %%mm2;" /* 0_0_0_0 0_0_g7g6 g5g4g3_0 0_0_0_0 */

  277.         "por %%mm2, %%mm0;" /* 0_r7r6r5 r4r3g7g6 g5g4g3b7 b6b5b4b3 */

  278. 

  279.         "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  280.         MOVNTQ "      %%mm0, (%1);"  /* store pixel 0-3 */

  281. 

  282.         /* convert RGB24 plane to RGB16 pack for pixel 0-3 */

  283.         "punpckhbw %%mm4, %%mm7;" /* 0_0_0_0 0_0_0_0 0_g7g6g5 g4g3_0_0 */

  284.         "punpckhbw %%mm1, %%mm5;" /* r7r6r5r4 r3_0_0_0 0_0_0_b7 b6b5b4b3 */

  285. 

  286.         "psllw        $2, %%mm7;" /* 0_0_0_0 0_0_g7g6 g5g4g3_0 0_0_0_0 */

  287.         "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  288. 

  289.         "por       %%mm7, %%mm5;" /* 0_r7r6r5 r4r3g7g6 g5g4g3b7 b6b5b4b3 */

  290.         "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  291. 

  292.         MOVNTQ " %%mm5, 8 (%1);" /* store pixel 4-7 */

  293. 

  294.         "add $16, %1            \n\t"

  295.         "add $4, %0             \n\t"

  296.         " js 1b                 \n\t"

  297.         : "+r" (index), "+r" (image)

  298.         : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)

  299.         );

  300.     }

  301. 

  302.     __asm__ volatile (EMMS);

  303.     return srcSliceH;

  304. }

  305. 

  306. static inline int RENAME(yuv420_rgb24)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  307.                                        int srcSliceH, uint8_t* dst[], int dstStride[]){

  308.     int y, h_size;

  309. 

  310.     if(c->srcFormat == PIX_FMT_YUV422P){

  311.         srcStride[1] *= 2;

  312.         srcStride[2] *= 2;

  313.     }

  314. 

  315.     h_size= (c->dstW+7)&~7;

  316.     if(h_size*3 > FFABS(dstStride[0])) h_size-=8;

  317. 

  318.     __asm__ volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );

  319. 

  320.     for (y= 0; y<srcSliceH; y++ ) {

  321.         uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];

  322.         uint8_t *py = src[0] + y*srcStride[0];

  323.         uint8_t *pu = src[1] + (y>>1)*srcStride[1];

  324.         uint8_t *pv = src[2] + (y>>1)*srcStride[2];

  325.         long index= -h_size/2;

  326. 

  327.         /* This MMX assembly code deals with a SINGLE scan line at a time,

  328.          * it converts 8 pixels in each iteration. */

  329.         __asm__ volatile (

  330.         /* load data for start of next scan line */

  331.         "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  332.         "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  333.         "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  334.         //".balign 16     \n\t"

  335.         "1:             \n\t"

  336. YUV2RGB

  337.         /* mm0=B, %%mm2=G, %%mm1=R */

  338. #if HAVE_MMX2

  339.         "movq "MANGLE(ff_M24A)", %%mm4     \n\t"

  340.         "movq "MANGLE(ff_M24C)", %%mm7     \n\t"

  341.         "pshufw $0x50, %%mm0, %%mm5     \n\t" /* B3 B2 B3 B2  B1 B0 B1 B0 */

  342.         "pshufw $0x50, %%mm2, %%mm3     \n\t" /* G3 G2 G3 G2  G1 G0 G1 G0 */

  343.         "pshufw $0x00, %%mm1, %%mm6     \n\t" /* R1 R0 R1 R0  R1 R0 R1 R0 */

  344. 

  345.         "pand   %%mm4, %%mm5            \n\t" /*    B2        B1       B0 */

  346.         "pand   %%mm4, %%mm3            \n\t" /*    G2        G1       G0 */

  347.         "pand   %%mm7, %%mm6            \n\t" /*       R1        R0       */

  348. 

  349.         "psllq     $8, %%mm3            \n\t" /* G2        G1       G0    */

  350.         "por    %%mm5, %%mm6            \n\t"

  351.         "por    %%mm3, %%mm6            \n\t"

  352.         MOVNTQ" %%mm6, (%1)             \n\t"

  353. 

  354.         "psrlq     $8, %%mm2            \n\t" /* 00 G7 G6 G5  G4 G3 G2 G1 */

  355.         "pshufw $0xA5, %%mm0, %%mm5     \n\t" /* B5 B4 B5 B4  B3 B2 B3 B2 */

  356.         "pshufw $0x55, %%mm2, %%mm3     \n\t" /* G4 G3 G4 G3  G4 G3 G4 G3 */

  357.         "pshufw $0xA5, %%mm1, %%mm6     \n\t" /* R5 R4 R5 R4  R3 R2 R3 R2 */

  358. 

  359.         "pand "MANGLE(ff_M24B)", %%mm5     \n\t" /* B5       B4        B3    */

  360.         "pand          %%mm7, %%mm3     \n\t" /*       G4        G3       */

  361.         "pand          %%mm4, %%mm6     \n\t" /*    R4        R3       R2 */

  362. 

  363.         "por    %%mm5, %%mm3            \n\t" /* B5    G4 B4     G3 B3    */

  364.         "por    %%mm3, %%mm6            \n\t"

  365.         MOVNTQ" %%mm6, 8(%1)            \n\t"

  366. 

  367.         "pshufw $0xFF, %%mm0, %%mm5     \n\t" /* B7 B6 B7 B6  B7 B6 B6 B7 */

  368.         "pshufw $0xFA, %%mm2, %%mm3     \n\t" /* 00 G7 00 G7  G6 G5 G6 G5 */

  369.         "pshufw $0xFA, %%mm1, %%mm6     \n\t" /* R7 R6 R7 R6  R5 R4 R5 R4 */

  370.         "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  371. 

  372.         "pand          %%mm7, %%mm5     \n\t" /*       B7        B6       */

  373.         "pand          %%mm4, %%mm3     \n\t" /*    G7        G6       G5 */

  374.         "pand "MANGLE(ff_M24B)", %%mm6     \n\t" /* R7       R6        R5    */

  375.         "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  376. \

  377.         "por          %%mm5, %%mm3      \n\t"

  378.         "por          %%mm3, %%mm6      \n\t"

  379.         MOVNTQ"       %%mm6, 16(%1)     \n\t"

  380.         "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  381.         "pxor         %%mm4, %%mm4      \n\t"

  382. 

  383. #else

  384. 

  385.         "pxor      %%mm4, %%mm4     \n\t"

  386.         "movq      %%mm0, %%mm5     \n\t" /* B */

  387.         "movq      %%mm1, %%mm6     \n\t" /* R */

  388.         "punpcklbw %%mm2, %%mm0     \n\t" /* GBGBGBGB 0 */

  389.         "punpcklbw %%mm4, %%mm1     \n\t" /* 0R0R0R0R 0 */

  390.         "punpckhbw %%mm2, %%mm5     \n\t" /* GBGBGBGB 2 */

  391.         "punpckhbw %%mm4, %%mm6     \n\t" /* 0R0R0R0R 2 */

  392.         "movq      %%mm0, %%mm7     \n\t" /* GBGBGBGB 0 */

  393.         "movq      %%mm5, %%mm3     \n\t" /* GBGBGBGB 2 */

  394.         "punpcklwd %%mm1, %%mm7     \n\t" /* 0RGB0RGB 0 */

  395.         "punpckhwd %%mm1, %%mm0     \n\t" /* 0RGB0RGB 1 */

  396.         "punpcklwd %%mm6, %%mm5     \n\t" /* 0RGB0RGB 2 */

  397.         "punpckhwd %%mm6, %%mm3     \n\t" /* 0RGB0RGB 3 */

  398. 

  399.         "movq      %%mm7, %%mm2     \n\t" /* 0RGB0RGB 0 */

  400.         "movq      %%mm0, %%mm6     \n\t" /* 0RGB0RGB 1 */

  401.         "movq      %%mm5, %%mm1     \n\t" /* 0RGB0RGB 2 */

  402.         "movq      %%mm3, %%mm4     \n\t" /* 0RGB0RGB 3 */

  403. 

  404.         "psllq       $40, %%mm7     \n\t" /* RGB00000 0 */

  405.         "psllq       $40, %%mm0     \n\t" /* RGB00000 1 */

  406.         "psllq       $40, %%mm5     \n\t" /* RGB00000 2 */

  407.         "psllq       $40, %%mm3     \n\t" /* RGB00000 3 */

  408. 

  409.         "punpckhdq %%mm2, %%mm7     \n\t" /* 0RGBRGB0 0 */

  410.         "punpckhdq %%mm6, %%mm0     \n\t" /* 0RGBRGB0 1 */

  411.         "punpckhdq %%mm1, %%mm5     \n\t" /* 0RGBRGB0 2 */

  412.         "punpckhdq %%mm4, %%mm3     \n\t" /* 0RGBRGB0 3 */

  413. 

  414.         "psrlq        $8, %%mm7     \n\t" /* 00RGBRGB 0 */

  415.         "movq      %%mm0, %%mm6     \n\t" /* 0RGBRGB0 1 */

  416.         "psllq       $40, %%mm0     \n\t" /* GB000000 1 */

  417.         "por       %%mm0, %%mm7     \n\t" /* GBRGBRGB 0 */

  418.         MOVNTQ"    %%mm7, (%1)      \n\t"

  419. 

  420.         "movd 4 (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  421. 

  422.         "psrlq       $24, %%mm6     \n\t" /* 0000RGBR 1 */

  423.         "movq      %%mm5, %%mm1     \n\t" /* 0RGBRGB0 2 */

  424.         "psllq       $24, %%mm5     \n\t" /* BRGB0000 2 */

  425.         "por       %%mm5, %%mm6     \n\t" /* BRGBRGBR 1 */

  426.         MOVNTQ"    %%mm6, 8(%1)     \n\t"

  427. 

  428.         "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  429. 

  430.         "psrlq       $40, %%mm1     \n\t" /* 000000RG 2 */

  431.         "psllq        $8, %%mm3     \n\t" /* RGBRGB00 3 */

  432.         "por       %%mm3, %%mm1     \n\t" /* RGBRGBRG 2 */

  433.         MOVNTQ"    %%mm1, 16(%1)    \n\t"

  434. 

  435.         "movd 4 (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  436.         "pxor      %%mm4, %%mm4     \n\t"

  437. #endif

  438. 

  439.         "add $24, %1    \n\t"

  440.         "add  $4, %0    \n\t"

  441.         " js  1b        \n\t"

  442. 

  443.         : "+r" (index), "+r" (image)

  444.         : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)

  445.         );

  446.     }

  447. 

  448.     __asm__ volatile (EMMS);

  449.     return srcSliceH;

  450. }

  451. 

  452. static inline int RENAME(yuv420_rgb32)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  453.                                        int srcSliceH, uint8_t* dst[], int dstStride[]){

  454.     int y, h_size;

  455. 

  456.     if(c->srcFormat == PIX_FMT_YUV422P){

  457.         srcStride[1] *= 2;

  458.         srcStride[2] *= 2;

  459.     }

  460. 

  461.     h_size= (c->dstW+7)&~7;

  462.     if(h_size*4 > FFABS(dstStride[0])) h_size-=8;

  463. 

  464.     __asm__ volatile ("pxor %mm4, %mm4;" /* zero mm4 */ );

  465. 

  466.     for (y= 0; y<srcSliceH; y++ ) {

  467.         uint8_t *image = dst[0] + (y+srcSliceY)*dstStride[0];

  468.         uint8_t *py = src[0] + y*srcStride[0];

  469.         uint8_t *pu = src[1] + (y>>1)*srcStride[1];

  470.         uint8_t *pv = src[2] + (y>>1)*srcStride[2];

  471.         long index= -h_size/2;

  472. 

  473.         /* This MMX assembly code deals with a SINGLE scan line at a time,

  474.          * it converts 8 pixels in each iteration. */

  475.         __asm__ volatile (

  476.         /* load data for start of next scan line */

  477.         "movd    (%2, %0), %%mm0;" /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  478.         "movd    (%3, %0), %%mm1;" /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  479.         "movq (%5, %0, 2), %%mm6;" /* Load 8  Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  480.         //".balign 16     \n\t"

  481.         "1:             \n\t"

  482. YUV2RGB

  483.         /* convert RGB plane to RGB packed format,

  484.            mm0 ->  B, mm1 -> R, mm2 -> G, mm3 -> 0,

  485.            mm4 -> GB, mm5 -> AR pixel 4-7,

  486.            mm6 -> GB, mm7 -> AR pixel 0-3 */

  487.         "pxor      %%mm3, %%mm3;"   /* zero mm3 */

  488. 

  489.         "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */

  490.         "movq      %%mm1, %%mm7;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */

  491. 

  492.         "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */

  493.         "movq      %%mm1, %%mm5;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */

  494. 

  495.         "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */

  496.         "punpcklbw %%mm3, %%mm7;"   /* 00 R3 00 R2 00 R1 00 R0 */

  497. 

  498.         "punpcklwd %%mm7, %%mm6;"   /* 00 R1 B1 G1 00 R0 B0 G0 */

  499.         MOVNTQ "   %%mm6, (%1);"    /* Store ARGB1 ARGB0 */

  500. 

  501.         "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */

  502.         "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */

  503. 

  504.         "punpckhwd %%mm7, %%mm6;"   /* 00 R3 G3 B3 00 R2 B3 G2 */

  505.         MOVNTQ "   %%mm6, 8 (%1);"  /* Store ARGB3 ARGB2 */

  506. 

  507.         "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */

  508.         "punpckhbw %%mm3, %%mm5;"   /* 00 R7 00 R6 00 R5 00 R4 */

  509. 

  510.         "punpcklwd %%mm5, %%mm4;"   /* 00 R5 B5 G5 00 R4 B4 G4 */

  511.         MOVNTQ "   %%mm4, 16 (%1);" /* Store ARGB5 ARGB4 */

  512. 

  513.         "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */

  514.         "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */

  515. 

  516.         "punpckhwd %%mm5, %%mm4;"   /* 00 R7 G7 B7 00 R6 B6 G6 */

  517.         MOVNTQ "   %%mm4, 24 (%1);" /* Store ARGB7 ARGB6 */

  518. 

  519.         "movd 4 (%2, %0), %%mm0;"   /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */

  520.         "movd 4 (%3, %0), %%mm1;"   /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */

  521. 

  522.         "pxor         %%mm4, %%mm4;" /* zero mm4 */

  523.         "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */

  524. 

  525.         "add $32, %1    \n\t"

  526.         "add  $4, %0    \n\t"

  527.         " js  1b        \n\t"

  528. 

  529.         : "+r" (index), "+r" (image)

  530.         : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), "r" (py - 2*index)

  531.         );

  532.     }

  533. 

  534.     __asm__ volatile (EMMS);

  535.     return srcSliceH;

  536. }