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FFmpeg/libswscale/swscale.c

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  1. /*

  2.  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>

  3.  *

  4.  * This file is part of Libav.

  5.  *

  6.  * Libav is free software; you can redistribute it and/or

  7.  * modify it under the terms of the GNU Lesser General Public

  8.  * License as published by the Free Software Foundation; either

  9.  * version 2.1 of the License, or (at your option) any later version.

  10.  *

  11.  * Libav is distributed in the hope that it will be useful,

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

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  14.  * Lesser General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU Lesser General Public

  17.  * License along with Libav; if not, write to the Free Software

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

  19.  */

  20. 

  21. /*

  22.   supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8

  23.   supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09

  24.   {BGR,RGB}{1,4,8,15,16} support dithering

  25. 

  26.   unscaled special converters (YV12=I420=IYUV, Y800=Y8)

  27.   YV12 -> {BGR,RGB}{1,4,8,12,15,16,24,32}

  28.   x -> x

  29.   YUV9 -> YV12

  30.   YUV9/YV12 -> Y800

  31.   Y800 -> YUV9/YV12

  32.   BGR24 -> BGR32 & RGB24 -> RGB32

  33.   BGR32 -> BGR24 & RGB32 -> RGB24

  34.   BGR15 -> BGR16

  35. */

  36. 

  37. /*

  38. tested special converters (most are tested actually, but I did not write it down ...)

  39.  YV12 -> BGR12/BGR16

  40.  YV12 -> YV12

  41.  BGR15 -> BGR16

  42.  BGR16 -> BGR16

  43.  YVU9 -> YV12

  44. 

  45. untested special converters

  46.   YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be OK)

  47.   YV12/I420 -> YV12/I420

  48.   YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format

  49.   BGR24 -> BGR32 & RGB24 -> RGB32

  50.   BGR32 -> BGR24 & RGB32 -> RGB24

  51.   BGR24 -> YV12

  52. */

  53. 

  54. #include <inttypes.h>

  55. #include <string.h>

  56. #include <math.h>

  57. #include <stdio.h>

  58. #include "config.h"

  59. #include <assert.h>

  60. #include "swscale.h"

  61. #include "swscale_internal.h"

  62. #include "rgb2rgb.h"

  63. #include "libavutil/intreadwrite.h"

  64. #include "libavutil/x86_cpu.h"

  65. #include "libavutil/avutil.h"

  66. #include "libavutil/mathematics.h"

  67. #include "libavutil/bswap.h"

  68. #include "libavutil/pixdesc.h"

  69. 

  70. #undef MOVNTQ

  71. #undef PAVGB

  72. 

  73. //#undef HAVE_MMX2

  74. //#define HAVE_AMD3DNOW

  75. //#undef HAVE_MMX

  76. //#undef ARCH_X86

  77. #define DITHER1XBPP

  78. 

  79. #define isPacked(x)         (       \

  80.            (x)==PIX_FMT_PAL8        \

  81.         || (x)==PIX_FMT_YUYV422     \

  82.         || (x)==PIX_FMT_UYVY422     \

  83.         || (x)==PIX_FMT_Y400A       \

  84.         || isAnyRGB(x)              \

  85.     )

  86. 

  87. #define RGB2YUV_SHIFT 15

  88. #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  89. #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  90. #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  91. #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  92. #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  93. #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  94. #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  95. #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  96. #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  97. 

  98. static const double rgb2yuv_table[8][9]={

  99.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709

  100.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5}, //ITU709

  101.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  102.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  103.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  104.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  105.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //DEFAULT / ITU601 / ITU624 / SMPTE 170M

  106.     {0.701 , 0.087 , 0.212 , -0.384, 0.5, -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  107. };

  108. 

  109. /*

  110. NOTES

  111. Special versions: fast Y 1:1 scaling (no interpolation in y direction)

  112. 

  113. TODO

  114. more intelligent misalignment avoidance for the horizontal scaler

  115. write special vertical cubic upscale version

  116. optimize C code (YV12 / minmax)

  117. add support for packed pixel YUV input & output

  118. add support for Y8 output

  119. optimize BGR24 & BGR32

  120. add BGR4 output support

  121. write special BGR->BGR scaler

  122. */

  123. 

  124. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4)[2][8]={

  125. {  1,   3,   1,   3,   1,   3,   1,   3, },

  126. {  2,   0,   2,   0,   2,   0,   2,   0, },

  127. };

  128. 

  129. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8)[2][8]={

  130. {  6,   2,   6,   2,   6,   2,   6,   2, },

  131. {  0,   4,   0,   4,   0,   4,   0,   4, },

  132. };

  133. 

  134. DECLARE_ALIGNED(8, const uint8_t, dither_4x4_16)[4][8]={

  135. {  8,   4,  11,   7,   8,   4,  11,   7, },

  136. {  2,  14,   1,  13,   2,  14,   1,  13, },

  137. { 10,   6,   9,   5,  10,   6,   9,   5, },

  138. {  0,  12,   3,  15,   0,  12,   3,  15, },

  139. };

  140. 

  141. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32)[8][8]={

  142. { 17,   9,  23,  15,  16,   8,  22,  14, },

  143. {  5,  29,   3,  27,   4,  28,   2,  26, },

  144. { 21,  13,  19,  11,  20,  12,  18,  10, },

  145. {  0,  24,   6,  30,   1,  25,   7,  31, },

  146. { 16,   8,  22,  14,  17,   9,  23,  15, },

  147. {  4,  28,   2,  26,   5,  29,   3,  27, },

  148. { 20,  12,  18,  10,  21,  13,  19,  11, },

  149. {  1,  25,   7,  31,   0,  24,   6,  30, },

  150. };

  151. 

  152. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73)[8][8]={

  153. {  0,  55,  14,  68,   3,  58,  17,  72, },

  154. { 37,  18,  50,  32,  40,  22,  54,  35, },

  155. {  9,  64,   5,  59,  13,  67,   8,  63, },

  156. { 46,  27,  41,  23,  49,  31,  44,  26, },

  157. {  2,  57,  16,  71,   1,  56,  15,  70, },

  158. { 39,  21,  52,  34,  38,  19,  51,  33, },

  159. { 11,  66,   7,  62,  10,  65,   6,  60, },

  160. { 48,  30,  43,  25,  47,  29,  42,  24, },

  161. };

  162. 

  163. #if 1

  164. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  165. {117,  62, 158, 103, 113,  58, 155, 100, },

  166. { 34, 199,  21, 186,  31, 196,  17, 182, },

  167. {144,  89, 131,  76, 141,  86, 127,  72, },

  168. {  0, 165,  41, 206,  10, 175,  52, 217, },

  169. {110,  55, 151,  96, 120,  65, 162, 107, },

  170. { 28, 193,  14, 179,  38, 203,  24, 189, },

  171. {138,  83, 124,  69, 148,  93, 134,  79, },

  172. {  7, 172,  48, 213,   3, 168,  45, 210, },

  173. };

  174. #elif 1

  175. // tries to correct a gamma of 1.5

  176. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  177. {  0, 143,  18, 200,   2, 156,  25, 215, },

  178. { 78,  28, 125,  64,  89,  36, 138,  74, },

  179. { 10, 180,   3, 161,  16, 195,   8, 175, },

  180. {109,  51,  93,  38, 121,  60, 105,  47, },

  181. {  1, 152,  23, 210,   0, 147,  20, 205, },

  182. { 85,  33, 134,  71,  81,  30, 130,  67, },

  183. { 14, 190,   6, 171,  12, 185,   5, 166, },

  184. {117,  57, 101,  44, 113,  54,  97,  41, },

  185. };

  186. #elif 1

  187. // tries to correct a gamma of 2.0

  188. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  189. {  0, 124,   8, 193,   0, 140,  12, 213, },

  190. { 55,  14, 104,  42,  66,  19, 119,  52, },

  191. {  3, 168,   1, 145,   6, 187,   3, 162, },

  192. { 86,  31,  70,  21,  99,  39,  82,  28, },

  193. {  0, 134,  11, 206,   0, 129,   9, 200, },

  194. { 62,  17, 114,  48,  58,  16, 109,  45, },

  195. {  5, 181,   2, 157,   4, 175,   1, 151, },

  196. { 95,  36,  78,  26,  90,  34,  74,  24, },

  197. };

  198. #else

  199. // tries to correct a gamma of 2.5

  200. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={

  201. {  0, 107,   3, 187,   0, 125,   6, 212, },

  202. { 39,   7,  86,  28,  49,  11, 102,  36, },

  203. {  1, 158,   0, 131,   3, 180,   1, 151, },

  204. { 68,  19,  52,  12,  81,  25,  64,  17, },

  205. {  0, 119,   5, 203,   0, 113,   4, 195, },

  206. { 45,   9,  96,  33,  42,   8,  91,  30, },

  207. {  2, 172,   1, 144,   2, 165,   0, 137, },

  208. { 77,  23,  60,  15,  72,  21,  56,  14, },

  209. };

  210. #endif

  211. 

  212. static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  213.                                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  214.                                                     const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,

  215.                                                     int dstW, int chrDstW, int big_endian, int output_bits)

  216. {

  217.     //FIXME Optimize (just quickly written not optimized..)

  218.     int i;

  219.     int shift = 11 + 16 - output_bits;

  220. 

  221. #define output_pixel(pos, val) \

  222.     if (big_endian) { \

  223.         if (output_bits == 16) { \

  224.             AV_WB16(pos, av_clip_uint16(val >> shift)); \

  225.         } else { \

  226.             AV_WB16(pos, av_clip_uintp2(val >> shift, output_bits)); \

  227.         } \

  228.     } else { \

  229.         if (output_bits == 16) { \

  230.             AV_WL16(pos, av_clip_uint16(val >> shift)); \

  231.         } else { \

  232.             AV_WL16(pos, av_clip_uintp2(val >> shift, output_bits)); \

  233.         } \

  234.     }

  235.     for (i = 0; i < dstW; i++) {

  236.         int val = 1 << 10;

  237.         int j;

  238. 

  239.         for (j = 0; j < lumFilterSize; j++)

  240.             val += lumSrc[j][i] * lumFilter[j];

  241. 

  242.         output_pixel(&dest[i], val);

  243.     }

  244. 

  245.     if (uDest) {

  246.         for (i = 0; i < chrDstW; i++) {

  247.             int u = 1 << 10;

  248.             int v = 1 << 10;

  249.             int j;

  250. 

  251.             for (j = 0; j < chrFilterSize; j++) {

  252.                 u += chrSrc[j][i       ] * chrFilter[j];

  253.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  254.             }

  255. 

  256.             output_pixel(&uDest[i], u);

  257.             output_pixel(&vDest[i], v);

  258.         }

  259.     }

  260. 

  261.     if (CONFIG_SWSCALE_ALPHA && aDest) {

  262.         for (i = 0; i < dstW; i++) {

  263.             int val = 1 << 10;

  264.             int j;

  265. 

  266.             for (j = 0; j < lumFilterSize; j++)

  267.                 val += alpSrc[j][i] * lumFilter[j];

  268. 

  269.             output_pixel(&aDest[i], val);

  270.         }

  271.     }

  272. }

  273. 

  274. #define yuv2NBPS(bits, BE_LE, is_be) \

  275. static void yuv2yuvX ## bits ## BE_LE ## _c(const int16_t *lumFilter, \

  276.                               const int16_t **lumSrc, int lumFilterSize, \

  277.                               const int16_t *chrFilter, const int16_t **chrSrc, \

  278.                               int chrFilterSize, const int16_t **alpSrc, \

  279.                               uint16_t *dest, uint16_t *uDest, uint16_t *vDest, \

  280.                               uint16_t *aDest, int dstW, int chrDstW) \

  281. { \

  282.     yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize, \

  283.                            chrFilter, chrSrc, chrFilterSize, \

  284.                            alpSrc, \

  285.                            dest, uDest, vDest, aDest, \

  286.                            dstW, chrDstW, is_be, bits); \

  287. }

  288. yuv2NBPS( 9, BE, 1);

  289. yuv2NBPS( 9, LE, 0);

  290. yuv2NBPS(10, BE, 1);

  291. yuv2NBPS(10, LE, 0);

  292. yuv2NBPS(16, BE, 1);

  293. yuv2NBPS(16, LE, 0);

  294. 

  295. static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  296.                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  297.                                  const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,

  298.                                  enum PixelFormat dstFormat)

  299. {

  300. #define conv16(bits) \

  301.     if (isBE(dstFormat)) { \

  302.         yuv2yuvX ## bits ## BE_c(lumFilter, lumSrc, lumFilterSize, \

  303.                                chrFilter, chrSrc, chrFilterSize, \

  304.                                alpSrc, \

  305.                                dest, uDest, vDest, aDest, \

  306.                                dstW, chrDstW); \

  307.     } else { \

  308.         yuv2yuvX ## bits ## LE_c(lumFilter, lumSrc, lumFilterSize, \

  309.                                chrFilter, chrSrc, chrFilterSize, \

  310.                                alpSrc, \

  311.                                dest, uDest, vDest, aDest, \

  312.                                dstW, chrDstW); \

  313.     }

  314.     if (is16BPS(dstFormat)) {

  315.         conv16(16);

  316.     } else if (av_pix_fmt_descriptors[dstFormat].comp[0].depth_minus1 == 8) {

  317.         conv16(9);

  318.     } else {

  319.         conv16(10);

  320.     }

  321. #undef conv16

  322. }

  323. 

  324. static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  325.                                const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  326.                                const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)

  327. {

  328.     //FIXME Optimize (just quickly written not optimized..)

  329.     int i;

  330.     for (i=0; i<dstW; i++) {

  331.         int val=1<<18;

  332.         int j;

  333.         for (j=0; j<lumFilterSize; j++)

  334.             val += lumSrc[j][i] * lumFilter[j];

  335. 

  336.         dest[i]= av_clip_uint8(val>>19);

  337.     }

  338. 

  339.     if (uDest)

  340.         for (i=0; i<chrDstW; i++) {

  341.             int u=1<<18;

  342.             int v=1<<18;

  343.             int j;

  344.             for (j=0; j<chrFilterSize; j++) {

  345.                 u += chrSrc[j][i] * chrFilter[j];

  346.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  347.             }

  348. 

  349.             uDest[i]= av_clip_uint8(u>>19);

  350.             vDest[i]= av_clip_uint8(v>>19);

  351.         }

  352. 

  353.     if (CONFIG_SWSCALE_ALPHA && aDest)

  354.         for (i=0; i<dstW; i++) {

  355.             int val=1<<18;

  356.             int j;

  357.             for (j=0; j<lumFilterSize; j++)

  358.                 val += alpSrc[j][i] * lumFilter[j];

  359. 

  360.             aDest[i]= av_clip_uint8(val>>19);

  361.         }

  362. 

  363. }

  364. 

  365. static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  366.                                 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  367.                                 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)

  368. {

  369.     //FIXME Optimize (just quickly written not optimized..)

  370.     int i;

  371.     for (i=0; i<dstW; i++) {

  372.         int val=1<<18;

  373.         int j;

  374.         for (j=0; j<lumFilterSize; j++)

  375.             val += lumSrc[j][i] * lumFilter[j];

  376. 

  377.         dest[i]= av_clip_uint8(val>>19);

  378.     }

  379. 

  380.     if (!uDest)

  381.         return;

  382. 

  383.     if (dstFormat == PIX_FMT_NV12)

  384.         for (i=0; i<chrDstW; i++) {

  385.             int u=1<<18;

  386.             int v=1<<18;

  387.             int j;

  388.             for (j=0; j<chrFilterSize; j++) {

  389.                 u += chrSrc[j][i] * chrFilter[j];

  390.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  391.             }

  392. 

  393.             uDest[2*i]= av_clip_uint8(u>>19);

  394.             uDest[2*i+1]= av_clip_uint8(v>>19);

  395.         }

  396.     else

  397.         for (i=0; i<chrDstW; i++) {

  398.             int u=1<<18;

  399.             int v=1<<18;

  400.             int j;

  401.             for (j=0; j<chrFilterSize; j++) {

  402.                 u += chrSrc[j][i] * chrFilter[j];

  403.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  404.             }

  405. 

  406.             uDest[2*i]= av_clip_uint8(v>>19);

  407.             uDest[2*i+1]= av_clip_uint8(u>>19);

  408.         }

  409. }

  410. 

  411. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

  412.     for (i=0; i<(dstW>>1); i++) {\

  413.         int j;\

  414.         int Y1 = 1<<18;\

  415.         int Y2 = 1<<18;\

  416.         int U  = 1<<18;\

  417.         int V  = 1<<18;\

  418.         int av_unused A1, A2;\

  419.         type av_unused *r, *b, *g;\

  420.         const int i2= 2*i;\

  421.         \

  422.         for (j=0; j<lumFilterSize; j++) {\

  423.             Y1 += lumSrc[j][i2] * lumFilter[j];\

  424.             Y2 += lumSrc[j][i2+1] * lumFilter[j];\

  425.         }\

  426.         for (j=0; j<chrFilterSize; j++) {\

  427.             U += chrSrc[j][i] * chrFilter[j];\

  428.             V += chrSrc[j][i+VOFW] * chrFilter[j];\

  429.         }\

  430.         Y1>>=19;\

  431.         Y2>>=19;\

  432.         U >>=19;\

  433.         V >>=19;\

  434.         if (alpha) {\

  435.             A1 = 1<<18;\

  436.             A2 = 1<<18;\

  437.             for (j=0; j<lumFilterSize; j++) {\

  438.                 A1 += alpSrc[j][i2  ] * lumFilter[j];\

  439.                 A2 += alpSrc[j][i2+1] * lumFilter[j];\

  440.             }\

  441.             A1>>=19;\

  442.             A2>>=19;\

  443.         }

  444. 

  445. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  446.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

  447.         if ((Y1|Y2|U|V)&256) {\

  448.             if (Y1>255)   Y1=255; \

  449.             else if (Y1<0)Y1=0;   \

  450.             if (Y2>255)   Y2=255; \

  451.             else if (Y2<0)Y2=0;   \

  452.             if (U>255)    U=255;  \

  453.             else if (U<0) U=0;    \

  454.             if (V>255)    V=255;  \

  455.             else if (V<0) V=0;    \

  456.         }\

  457.         if (alpha && ((A1|A2)&256)) {\

  458.             A1=av_clip_uint8(A1);\

  459.             A2=av_clip_uint8(A2);\

  460.         }

  461. 

  462. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

  463.     for (i=0; i<dstW; i++) {\

  464.         int j;\

  465.         int Y = 0;\

  466.         int U = -128<<19;\

  467.         int V = -128<<19;\

  468.         int av_unused A;\

  469.         int R,G,B;\

  470.         \

  471.         for (j=0; j<lumFilterSize; j++) {\

  472.             Y += lumSrc[j][i     ] * lumFilter[j];\

  473.         }\

  474.         for (j=0; j<chrFilterSize; j++) {\

  475.             U += chrSrc[j][i     ] * chrFilter[j];\

  476.             V += chrSrc[j][i+VOFW] * chrFilter[j];\

  477.         }\

  478.         Y >>=10;\

  479.         U >>=10;\

  480.         V >>=10;\

  481.         if (alpha) {\

  482.             A = rnd;\

  483.             for (j=0; j<lumFilterSize; j++)\

  484.                 A += alpSrc[j][i     ] * lumFilter[j];\

  485.             A >>=19;\

  486.             if (A&256)\

  487.                 A = av_clip_uint8(A);\

  488.         }

  489. 

  490. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

  491.     YSCALE_YUV_2_PACKEDX_FULL_C(rnd>>3,alpha)\

  492.         Y-= c->yuv2rgb_y_offset;\

  493.         Y*= c->yuv2rgb_y_coeff;\

  494.         Y+= rnd;\

  495.         R= Y + V*c->yuv2rgb_v2r_coeff;\

  496.         G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\

  497.         B= Y +                          U*c->yuv2rgb_u2b_coeff;\

  498.         if ((R|G|B)&(0xC0000000)) {\

  499.             if (R>=(256<<22))   R=(256<<22)-1; \

  500.             else if (R<0)R=0;   \

  501.             if (G>=(256<<22))   G=(256<<22)-1; \

  502.             else if (G<0)G=0;   \

  503.             if (B>=(256<<22))   B=(256<<22)-1; \

  504.             else if (B<0)B=0;   \

  505.         }

  506. 

  507. #define YSCALE_YUV_2_GRAY16_C \

  508.     for (i=0; i<(dstW>>1); i++) {\

  509.         int j;\

  510.         int Y1 = 1<<18;\

  511.         int Y2 = 1<<18;\

  512.         int U  = 1<<18;\

  513.         int V  = 1<<18;\

  514.         \

  515.         const int i2= 2*i;\

  516.         \

  517.         for (j=0; j<lumFilterSize; j++) {\

  518.             Y1 += lumSrc[j][i2] * lumFilter[j];\

  519.             Y2 += lumSrc[j][i2+1] * lumFilter[j];\

  520.         }\

  521.         Y1>>=11;\

  522.         Y2>>=11;\

  523.         if ((Y1|Y2|U|V)&65536) {\

  524.             if (Y1>65535)   Y1=65535; \

  525.             else if (Y1<0)Y1=0;   \

  526.             if (Y2>65535)   Y2=65535; \

  527.             else if (Y2<0)Y2=0;   \

  528.         }

  529. 

  530. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

  531.     YSCALE_YUV_2_PACKEDX_C(type,alpha)  /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\

  532.     r = (type *)c->table_rV[V];   \

  533.     g = (type *)(c->table_gU[U] + c->table_gV[V]); \

  534.     b = (type *)c->table_bU[U];

  535. 

  536. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

  537.     for (i=0; i<(dstW>>1); i++) { \

  538.         const int i2= 2*i;       \

  539.         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;           \

  540.         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;           \

  541.         int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;  \

  542.         int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19;  \

  543.         type av_unused *r, *b, *g;                                    \

  544.         int av_unused A1, A2;                                         \

  545.         if (alpha) {\

  546.             A1= (abuf0[i2  ]*yalpha1+abuf1[i2  ]*yalpha)>>19;         \

  547.             A2= (abuf0[i2+1]*yalpha1+abuf1[i2+1]*yalpha)>>19;         \

  548.         }

  549. 

  550. #define YSCALE_YUV_2_GRAY16_2_C   \

  551.     for (i=0; i<(dstW>>1); i++) { \

  552.         const int i2= 2*i;       \

  553.         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>11;           \

  554.         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;

  555. 

  556. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  557.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

  558.     r = (type *)c->table_rV[V];\

  559.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  560.     b = (type *)c->table_bU[U];

  561. 

  562. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

  563.     for (i=0; i<(dstW>>1); i++) {\

  564.         const int i2= 2*i;\

  565.         int Y1= buf0[i2  ]>>7;\

  566.         int Y2= buf0[i2+1]>>7;\

  567.         int U= (uvbuf1[i     ])>>7;\

  568.         int V= (uvbuf1[i+VOFW])>>7;\

  569.         type av_unused *r, *b, *g;\

  570.         int av_unused A1, A2;\

  571.         if (alpha) {\

  572.             A1= abuf0[i2  ]>>7;\

  573.             A2= abuf0[i2+1]>>7;\

  574.         }

  575. 

  576. #define YSCALE_YUV_2_GRAY16_1_C \

  577.     for (i=0; i<(dstW>>1); i++) {\

  578.         const int i2= 2*i;\

  579.         int Y1= buf0[i2  ]<<1;\

  580.         int Y2= buf0[i2+1]<<1;

  581. 

  582. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  583.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

  584.     r = (type *)c->table_rV[V];\

  585.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  586.     b = (type *)c->table_bU[U];

  587. 

  588. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

  589.     for (i=0; i<(dstW>>1); i++) {\

  590.         const int i2= 2*i;\

  591.         int Y1= buf0[i2  ]>>7;\

  592.         int Y2= buf0[i2+1]>>7;\

  593.         int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\

  594.         int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\

  595.         type av_unused *r, *b, *g;\

  596.         int av_unused A1, A2;\

  597.         if (alpha) {\

  598.             A1= abuf0[i2  ]>>7;\

  599.             A2= abuf0[i2+1]>>7;\

  600.         }

  601. 

  602. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  603.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

  604.     r = (type *)c->table_rV[V];\

  605.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  606.     b = (type *)c->table_bU[U];

  607. 

  608. #define YSCALE_YUV_2_MONO2_C \

  609.     const uint8_t * const d128=dither_8x8_220[y&7];\

  610.     uint8_t *g= c->table_gU[128] + c->table_gV[128];\

  611.     for (i=0; i<dstW-7; i+=8) {\

  612.         int acc;\

  613.         acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\

  614.         acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\

  615.         acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\

  616.         acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\

  617.         acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\

  618.         acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\

  619.         acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\

  620.         acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\

  621.         ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  622.         dest++;\

  623.     }

  624. 

  625. #define YSCALE_YUV_2_MONOX_C \

  626.     const uint8_t * const d128=dither_8x8_220[y&7];\

  627.     uint8_t *g= c->table_gU[128] + c->table_gV[128];\

  628.     int acc=0;\

  629.     for (i=0; i<dstW-1; i+=2) {\

  630.         int j;\

  631.         int Y1=1<<18;\

  632.         int Y2=1<<18;\

  633. \

  634.         for (j=0; j<lumFilterSize; j++) {\

  635.             Y1 += lumSrc[j][i] * lumFilter[j];\

  636.             Y2 += lumSrc[j][i+1] * lumFilter[j];\

  637.         }\

  638.         Y1>>=19;\

  639.         Y2>>=19;\

  640.         if ((Y1|Y2)&256) {\

  641.             if (Y1>255)   Y1=255;\

  642.             else if (Y1<0)Y1=0;\

  643.             if (Y2>255)   Y2=255;\

  644.             else if (Y2<0)Y2=0;\

  645.         }\

  646.         acc+= acc + g[Y1+d128[(i+0)&7]];\

  647.         acc+= acc + g[Y2+d128[(i+1)&7]];\

  648.         if ((i&7)==6) {\

  649.             ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  650.             dest++;\

  651.         }\

  652.     }

  653. 

  654. #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\

  655.     switch(c->dstFormat) {\

  656.     case PIX_FMT_RGB48BE:\

  657.     case PIX_FMT_RGB48LE:\

  658.         func(uint8_t,0)\

  659.             ((uint8_t*)dest)[ 0]= r[Y1];\

  660.             ((uint8_t*)dest)[ 1]= r[Y1];\

  661.             ((uint8_t*)dest)[ 2]= g[Y1];\

  662.             ((uint8_t*)dest)[ 3]= g[Y1];\

  663.             ((uint8_t*)dest)[ 4]= b[Y1];\

  664.             ((uint8_t*)dest)[ 5]= b[Y1];\

  665.             ((uint8_t*)dest)[ 6]= r[Y2];\

  666.             ((uint8_t*)dest)[ 7]= r[Y2];\

  667.             ((uint8_t*)dest)[ 8]= g[Y2];\

  668.             ((uint8_t*)dest)[ 9]= g[Y2];\

  669.             ((uint8_t*)dest)[10]= b[Y2];\

  670.             ((uint8_t*)dest)[11]= b[Y2];\

  671.             dest+=12;\

  672.         }\

  673.         break;\

  674.     case PIX_FMT_BGR48BE:\

  675.     case PIX_FMT_BGR48LE:\

  676.         func(uint8_t,0)\

  677.             ((uint8_t*)dest)[ 0] = ((uint8_t*)dest)[ 1] = b[Y1];\

  678.             ((uint8_t*)dest)[ 2] = ((uint8_t*)dest)[ 3] = g[Y1];\

  679.             ((uint8_t*)dest)[ 4] = ((uint8_t*)dest)[ 5] = r[Y1];\

  680.             ((uint8_t*)dest)[ 6] = ((uint8_t*)dest)[ 7] = b[Y2];\

  681.             ((uint8_t*)dest)[ 8] = ((uint8_t*)dest)[ 9] = g[Y2];\

  682.             ((uint8_t*)dest)[10] = ((uint8_t*)dest)[11] = r[Y2];\

  683.             dest+=12;\

  684.         }\

  685.         break;\

  686.     case PIX_FMT_RGBA:\

  687.     case PIX_FMT_BGRA:\

  688.         if (CONFIG_SMALL) {\

  689.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\

  690.             func(uint32_t,needAlpha)\

  691.                 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? (A1<<24) : 0);\

  692.                 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? (A2<<24) : 0);\

  693.             }\

  694.         } else {\

  695.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\

  696.                 func(uint32_t,1)\

  697.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (A1<<24);\

  698.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (A2<<24);\

  699.                 }\

  700.             } else {\

  701.                 func(uint32_t,0)\

  702.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\

  703.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\

  704.                 }\

  705.             }\

  706.         }\

  707.         break;\

  708.     case PIX_FMT_ARGB:\

  709.     case PIX_FMT_ABGR:\

  710.         if (CONFIG_SMALL) {\

  711.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\

  712.             func(uint32_t,needAlpha)\

  713.                 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? A1 : 0);\

  714.                 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? A2 : 0);\

  715.             }\

  716.         } else {\

  717.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\

  718.                 func(uint32_t,1)\

  719.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + A1;\

  720.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + A2;\

  721.                 }\

  722.             } else {\

  723.                 func(uint32_t,0)\

  724.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\

  725.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\

  726.                 }\

  727.             }\

  728.         }                \

  729.         break;\

  730.     case PIX_FMT_RGB24:\

  731.         func(uint8_t,0)\

  732.             ((uint8_t*)dest)[0]= r[Y1];\

  733.             ((uint8_t*)dest)[1]= g[Y1];\

  734.             ((uint8_t*)dest)[2]= b[Y1];\

  735.             ((uint8_t*)dest)[3]= r[Y2];\

  736.             ((uint8_t*)dest)[4]= g[Y2];\

  737.             ((uint8_t*)dest)[5]= b[Y2];\

  738.             dest+=6;\

  739.         }\

  740.         break;\

  741.     case PIX_FMT_BGR24:\

  742.         func(uint8_t,0)\

  743.             ((uint8_t*)dest)[0]= b[Y1];\

  744.             ((uint8_t*)dest)[1]= g[Y1];\

  745.             ((uint8_t*)dest)[2]= r[Y1];\

  746.             ((uint8_t*)dest)[3]= b[Y2];\

  747.             ((uint8_t*)dest)[4]= g[Y2];\

  748.             ((uint8_t*)dest)[5]= r[Y2];\

  749.             dest+=6;\

  750.         }\

  751.         break;\

  752.     case PIX_FMT_RGB565BE:\

  753.     case PIX_FMT_RGB565LE:\

  754.     case PIX_FMT_BGR565BE:\

  755.     case PIX_FMT_BGR565LE:\

  756.         {\

  757.             const int dr1= dither_2x2_8[y&1    ][0];\

  758.             const int dg1= dither_2x2_4[y&1    ][0];\

  759.             const int db1= dither_2x2_8[(y&1)^1][0];\

  760.             const int dr2= dither_2x2_8[y&1    ][1];\

  761.             const int dg2= dither_2x2_4[y&1    ][1];\

  762.             const int db2= dither_2x2_8[(y&1)^1][1];\

  763.             func(uint16_t,0)\

  764.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  765.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  766.             }\

  767.         }\

  768.         break;\

  769.     case PIX_FMT_RGB555BE:\

  770.     case PIX_FMT_RGB555LE:\

  771.     case PIX_FMT_BGR555BE:\

  772.     case PIX_FMT_BGR555LE:\

  773.         {\

  774.             const int dr1= dither_2x2_8[y&1    ][0];\

  775.             const int dg1= dither_2x2_8[y&1    ][1];\

  776.             const int db1= dither_2x2_8[(y&1)^1][0];\

  777.             const int dr2= dither_2x2_8[y&1    ][1];\

  778.             const int dg2= dither_2x2_8[y&1    ][0];\

  779.             const int db2= dither_2x2_8[(y&1)^1][1];\

  780.             func(uint16_t,0)\

  781.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  782.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  783.             }\

  784.         }\

  785.         break;\

  786.     case PIX_FMT_RGB444BE:\

  787.     case PIX_FMT_RGB444LE:\

  788.     case PIX_FMT_BGR444BE:\

  789.     case PIX_FMT_BGR444LE:\

  790.         {\

  791.             const int dr1= dither_4x4_16[y&3    ][0];\

  792.             const int dg1= dither_4x4_16[y&3    ][1];\

  793.             const int db1= dither_4x4_16[(y&3)^3][0];\

  794.             const int dr2= dither_4x4_16[y&3    ][1];\

  795.             const int dg2= dither_4x4_16[y&3    ][0];\

  796.             const int db2= dither_4x4_16[(y&3)^3][1];\

  797.             func(uint16_t,0)\

  798.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  799.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  800.             }\

  801.         }\

  802.         break;\

  803.     case PIX_FMT_RGB8:\

  804.     case PIX_FMT_BGR8:\

  805.         {\

  806.             const uint8_t * const d64= dither_8x8_73[y&7];\

  807.             const uint8_t * const d32= dither_8x8_32[y&7];\

  808.             func(uint8_t,0)\

  809.                 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\

  810.                 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\

  811.             }\

  812.         }\

  813.         break;\

  814.     case PIX_FMT_RGB4:\

  815.     case PIX_FMT_BGR4:\

  816.         {\

  817.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  818.             const uint8_t * const d128=dither_8x8_220[y&7];\

  819.             func(uint8_t,0)\

  820.                 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\

  821.                                  + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\

  822.             }\

  823.         }\

  824.         break;\

  825.     case PIX_FMT_RGB4_BYTE:\

  826.     case PIX_FMT_BGR4_BYTE:\

  827.         {\

  828.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  829.             const uint8_t * const d128=dither_8x8_220[y&7];\

  830.             func(uint8_t,0)\

  831.                 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\

  832.                 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\

  833.             }\

  834.         }\

  835.         break;\

  836.     case PIX_FMT_MONOBLACK:\

  837.     case PIX_FMT_MONOWHITE:\

  838.         {\

  839.             func_monoblack\

  840.         }\

  841.         break;\

  842.     case PIX_FMT_YUYV422:\

  843.         func2\

  844.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  845.             ((uint8_t*)dest)[2*i2+1]= U;\

  846.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  847.             ((uint8_t*)dest)[2*i2+3]= V;\

  848.         }                \

  849.         break;\

  850.     case PIX_FMT_UYVY422:\

  851.         func2\

  852.             ((uint8_t*)dest)[2*i2+0]= U;\

  853.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  854.             ((uint8_t*)dest)[2*i2+2]= V;\

  855.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  856.         }                \

  857.         break;\

  858.     case PIX_FMT_GRAY16BE:\

  859.         func_g16\

  860.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

  861.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  862.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  863.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  864.         }                \

  865.         break;\

  866.     case PIX_FMT_GRAY16LE:\

  867.         func_g16\

  868.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  869.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  870.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  871.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  872.         }                \

  873.         break;\

  874.     }

  875. 

  876. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  877.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  878.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  879. {

  880.     int i;

  881.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)

  882. }

  883. 

  884. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  885.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  886.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  887. {

  888.     int i;

  889.     int step= c->dstFormatBpp/8;

  890.     int aidx= 3;

  891. 

  892.     switch(c->dstFormat) {

  893.     case PIX_FMT_ARGB:

  894.         dest++;

  895.         aidx= 0;

  896.     case PIX_FMT_RGB24:

  897.         aidx--;

  898.     case PIX_FMT_RGBA:

  899.         if (CONFIG_SMALL) {

  900.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  901.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  902.                 dest[aidx]= needAlpha ? A : 255;

  903.                 dest[0]= R>>22;

  904.                 dest[1]= G>>22;

  905.                 dest[2]= B>>22;

  906.                 dest+= step;

  907.             }

  908.         } else {

  909.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  910.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  911.                     dest[aidx]= A;

  912.                     dest[0]= R>>22;

  913.                     dest[1]= G>>22;

  914.                     dest[2]= B>>22;

  915.                     dest+= step;

  916.                 }

  917.             } else {

  918.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  919.                     dest[aidx]= 255;

  920.                     dest[0]= R>>22;

  921.                     dest[1]= G>>22;

  922.                     dest[2]= B>>22;

  923.                     dest+= step;

  924.                 }

  925.             }

  926.         }

  927.         break;

  928.     case PIX_FMT_ABGR:

  929.         dest++;

  930.         aidx= 0;

  931.     case PIX_FMT_BGR24:

  932.         aidx--;

  933.     case PIX_FMT_BGRA:

  934.         if (CONFIG_SMALL) {

  935.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  936.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  937.                 dest[aidx]= needAlpha ? A : 255;

  938.                 dest[0]= B>>22;

  939.                 dest[1]= G>>22;

  940.                 dest[2]= R>>22;

  941.                 dest+= step;

  942.             }

  943.         } else {

  944.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  945.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  946.                     dest[aidx]= A;

  947.                     dest[0]= B>>22;

  948.                     dest[1]= G>>22;

  949.                     dest[2]= R>>22;

  950.                     dest+= step;

  951.                 }

  952.             } else {

  953.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  954.                     dest[aidx]= 255;

  955.                     dest[0]= B>>22;

  956.                     dest[1]= G>>22;

  957.                     dest[2]= R>>22;

  958.                     dest+= step;

  959.                 }

  960.             }

  961.         }

  962.         break;

  963.     default:

  964.         assert(0);

  965.     }

  966. }

  967. 

  968. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)

  969. {

  970.     int i;

  971.     uint8_t *ptr = plane + stride*y;

  972.     for (i=0; i<height; i++) {

  973.         memset(ptr, val, width);

  974.         ptr += stride;

  975.     }

  976. }

  977. 

  978. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, long width,

  979.                             uint32_t *unused)

  980. {

  981.     int i;

  982.     for (i = 0; i < width; i++) {

  983.         int r = src[i*6+0];

  984.         int g = src[i*6+2];

  985.         int b = src[i*6+4];

  986. 

  987.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  988.     }

  989. }

  990. 

  991. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  992.                              const uint8_t *src1, const uint8_t *src2,

  993.                              long width, uint32_t *unused)

  994. {

  995.     int i;

  996.     assert(src1==src2);

  997.     for (i = 0; i < width; i++) {

  998.         int r = src1[6*i + 0];

  999.         int g = src1[6*i + 2];

  1000.         int b = src1[6*i + 4];

  1001. 

  1002.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1003.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1004.     }

  1005. }

  1006. 

  1007. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1008.                                   const uint8_t *src1, const uint8_t *src2,

  1009.                                   long width, uint32_t *unused)

  1010. {

  1011.     int i;

  1012.     assert(src1==src2);

  1013.     for (i = 0; i < width; i++) {

  1014.         int r= src1[12*i + 0] + src1[12*i + 6];

  1015.         int g= src1[12*i + 2] + src1[12*i + 8];

  1016.         int b= src1[12*i + 4] + src1[12*i + 10];

  1017. 

  1018.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1019.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1020.     }

  1021. }

  1022. 

  1023. static inline void bgr48ToY(uint8_t *dst, const uint8_t *src, long width,

  1024.                             uint32_t *unused)

  1025. {

  1026.     int i;

  1027.     for (i = 0; i < width; i++) {

  1028.         int b = src[i*6+0];

  1029.         int g = src[i*6+2];

  1030.         int r = src[i*6+4];

  1031. 

  1032.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1033.     }

  1034. }

  1035. 

  1036. static inline void bgr48ToUV(uint8_t *dstU, uint8_t *dstV,

  1037.                              const uint8_t *src1, const uint8_t *src2,

  1038.                              long width, uint32_t *unused)

  1039. {

  1040.     int i;

  1041.     for (i = 0; i < width; i++) {

  1042.         int b = src1[6*i + 0];

  1043.         int g = src1[6*i + 2];

  1044.         int r = src1[6*i + 4];

  1045. 

  1046.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1047.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1048.     }

  1049. }

  1050. 

  1051. static inline void bgr48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1052.                                   const uint8_t *src1, const uint8_t *src2,

  1053.                                   long width, uint32_t *unused)

  1054. {

  1055.     int i;

  1056.     for (i = 0; i < width; i++) {

  1057.         int b= src1[12*i + 0] + src1[12*i + 6];

  1058.         int g= src1[12*i + 2] + src1[12*i + 8];

  1059.         int r= src1[12*i + 4] + src1[12*i + 10];

  1060. 

  1061.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1062.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1063.     }

  1064. }

  1065. 

  1066. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1067. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1068. {\

  1069.     int i;\

  1070.     for (i=0; i<width; i++) {\

  1071.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1072.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1073.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1074. \

  1075.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1076.     }\

  1077. }

  1078. 

  1079. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1080. BGR2Y(uint32_t,bgr321ToY,16,16, 0, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1081. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1082. BGR2Y(uint32_t,rgb321ToY, 0,16,16, 0xFF00, 0x00FF, 0xFF00, RY    , GY<<8, BY    , RGB2YUV_SHIFT+8)

  1083. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1084. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1085. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1086. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1087. 

  1088. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1089. {

  1090.     int i;

  1091.     for (i=0; i<width; i++) {

  1092.         dst[i]= src[4*i];

  1093.     }

  1094. }

  1095. 

  1096. #define BGR2UV(type, name, shr, shg, shb, shp, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S) \

  1097. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1098. {\

  1099.     int i;\

  1100.     for (i=0; i<width; i++) {\

  1101.         int b= ((((const type*)src)[i]>>shp)&maskb)>>shb;\

  1102.         int g= ((((const type*)src)[i]>>shp)&maskg)>>shg;\

  1103.         int r= ((((const type*)src)[i]>>shp)&maskr)>>shr;\

  1104. \

  1105.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1106.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1107.     }\

  1108. }\

  1109. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1110. {\

  1111.     int i;\

  1112.     for (i=0; i<width; i++) {\

  1113.         int pix0= ((const type*)src)[2*i+0]>>shp;\

  1114.         int pix1= ((const type*)src)[2*i+1]>>shp;\

  1115.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1116.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1117.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1118.         g&= maskg|(2*maskg);\

  1119. \

  1120.         g>>=shg;\

  1121. \

  1122.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1123.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1124.     }\

  1125. }

  1126. 

  1127. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1128. BGR2UV(uint32_t,bgr321ToUV,16, 0, 0, 8, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1129. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1130. BGR2UV(uint32_t,rgb321ToUV, 0, 0,16, 8,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1131. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0, 0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1132. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0, 0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1133. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0, 0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1134. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0, 0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1135. 

  1136. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1137. {

  1138.     int i;

  1139.     for (i=0; i<width; i++) {

  1140.         int d= src[i];

  1141. 

  1142.         dst[i]= pal[d] & 0xFF;

  1143.     }

  1144. }

  1145. 

  1146. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1147.                            const uint8_t *src1, const uint8_t *src2,

  1148.                            long width, uint32_t *pal)

  1149. {

  1150.     int i;

  1151.     assert(src1 == src2);

  1152.     for (i=0; i<width; i++) {

  1153.         int p= pal[src1[i]];

  1154. 

  1155.         dstU[i]= p>>8;

  1156.         dstV[i]= p>>16;

  1157.     }

  1158. }

  1159. 

  1160. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1161. {

  1162.     int i, j;

  1163.     for (i=0; i<width/8; i++) {

  1164.         int d= ~src[i];

  1165.         for(j=0; j<8; j++)

  1166.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1167.     }

  1168. }

  1169. 

  1170. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1171. {

  1172.     int i, j;

  1173.     for (i=0; i<width/8; i++) {

  1174.         int d= src[i];

  1175.         for(j=0; j<8; j++)

  1176.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1177.     }

  1178. }

  1179. 

  1180. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1181. //Plain C versions

  1182. #if CONFIG_RUNTIME_CPUDETECT

  1183. #  define COMPILE_C 1

  1184. #  if   ARCH_X86

  1185. #    define COMPILE_MMX     HAVE_MMX

  1186. #    define COMPILE_MMX2    HAVE_MMX2

  1187. #    define COMPILE_3DNOW   HAVE_AMD3DNOW

  1188. #  elif ARCH_PPC

  1189. #    define COMPILE_ALTIVEC HAVE_ALTIVEC

  1190. #  endif

  1191. #else /* CONFIG_RUNTIME_CPUDETECT */

  1192. #  if   ARCH_X86

  1193. #    if   HAVE_MMX2

  1194. #      define COMPILE_MMX2  1

  1195. #    elif HAVE_AMD3DNOW

  1196. #      define COMPILE_3DNOW 1

  1197. #    elif HAVE_MMX

  1198. #      define COMPILE_MMX   1

  1199. #    else

  1200. #      define COMPILE_C     1

  1201. #    endif

  1202. #  elif ARCH_PPC && HAVE_ALTIVEC

  1203. #    define COMPILE_ALTIVEC 1

  1204. #  else

  1205. #    define COMPILE_C       1

  1206. #  endif

  1207. #endif

  1208. 

  1209. #ifndef COMPILE_C

  1210. #  define COMPILE_C 0

  1211. #endif

  1212. #ifndef COMPILE_MMX

  1213. #  define COMPILE_MMX 0

  1214. #endif

  1215. #ifndef COMPILE_MMX2

  1216. #  define COMPILE_MMX2 0

  1217. #endif

  1218. #ifndef COMPILE_3DNOW

  1219. #  define COMPILE_3DNOW 0

  1220. #endif

  1221. #ifndef COMPILE_ALTIVEC

  1222. #  define COMPILE_ALTIVEC 0

  1223. #endif

  1224. 

  1225. #define COMPILE_TEMPLATE_MMX 0

  1226. #define COMPILE_TEMPLATE_MMX2 0

  1227. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1228. #define COMPILE_TEMPLATE_ALTIVEC 0

  1229. 

  1230. #include "swscale_template.c"

  1231. 

  1232. #if COMPILE_ALTIVEC

  1233. #undef RENAME

  1234. #undef COMPILE_TEMPLATE_ALTIVEC

  1235. #define COMPILE_TEMPLATE_ALTIVEC 1

  1236. #define RENAME(a) a ## _altivec

  1237. #include "ppc/swscale_template.c"

  1238. #endif

  1239. 

  1240. #if ARCH_X86

  1241. 

  1242. //MMX versions

  1243. #if COMPILE_MMX

  1244. #undef RENAME

  1245. #undef COMPILE_TEMPLATE_MMX

  1246. #undef COMPILE_TEMPLATE_MMX2

  1247. #undef COMPILE_TEMPLATE_AMD3DNOW

  1248. #define COMPILE_TEMPLATE_MMX 1

  1249. #define COMPILE_TEMPLATE_MMX2 0

  1250. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1251. #define RENAME(a) a ## _MMX

  1252. #include "x86/swscale_template.c"

  1253. #endif

  1254. 

  1255. //MMX2 versions

  1256. #if COMPILE_MMX2

  1257. #undef RENAME

  1258. #undef COMPILE_TEMPLATE_MMX

  1259. #undef COMPILE_TEMPLATE_MMX2

  1260. #undef COMPILE_TEMPLATE_AMD3DNOW

  1261. #define COMPILE_TEMPLATE_MMX 1

  1262. #define COMPILE_TEMPLATE_MMX2 1

  1263. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1264. #define RENAME(a) a ## _MMX2

  1265. #include "x86/swscale_template.c"

  1266. #endif

  1267. 

  1268. //3DNOW versions

  1269. #if COMPILE_3DNOW

  1270. #undef RENAME

  1271. #undef COMPILE_TEMPLATE_MMX

  1272. #undef COMPILE_TEMPLATE_MMX2

  1273. #undef COMPILE_TEMPLATE_AMD3DNOW

  1274. #define COMPILE_TEMPLATE_MMX 1

  1275. #define COMPILE_TEMPLATE_MMX2 0

  1276. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1277. #define RENAME(a) a ## _3DNow

  1278. #include "x86/swscale_template.c"

  1279. #endif

  1280. 

  1281. #endif //ARCH_X86

  1282. 

  1283. SwsFunc ff_getSwsFunc(SwsContext *c)

  1284. {

  1285.     sws_init_swScale_c(c);

  1286. 

  1287. #if CONFIG_RUNTIME_CPUDETECT

  1288. #if ARCH_X86

  1289.     // ordered per speed fastest first

  1290.     if (c->flags & SWS_CPU_CAPS_MMX2) {

  1291.         sws_init_swScale_MMX2(c);

  1292.         return swScale_MMX2;

  1293.     } else if (c->flags & SWS_CPU_CAPS_3DNOW) {

  1294.         sws_init_swScale_3DNow(c);

  1295.         return swScale_3DNow;

  1296.     } else if (c->flags & SWS_CPU_CAPS_MMX) {

  1297.         sws_init_swScale_MMX(c);

  1298.         return swScale_MMX;

  1299.     }

  1300. 

  1301. #else

  1302. #if COMPILE_ALTIVEC

  1303.     if (c->flags & SWS_CPU_CAPS_ALTIVEC) {

  1304.         sws_init_swScale_altivec(c);

  1305.         return swScale_altivec;

  1306.     }

  1307. #endif

  1308. #endif /* ARCH_X86 */

  1309. #else //CONFIG_RUNTIME_CPUDETECT

  1310. #if   COMPILE_TEMPLATE_MMX2

  1311.     sws_init_swScale_MMX2(c);

  1312.     return swScale_MMX2;

  1313. #elif COMPILE_TEMPLATE_AMD3DNOW

  1314.     sws_init_swScale_3DNow(c);

  1315.     return swScale_3DNow;

  1316. #elif COMPILE_TEMPLATE_MMX

  1317.     sws_init_swScale_MMX(c);

  1318.     return swScale_MMX;

  1319. #elif COMPILE_TEMPLATE_ALTIVEC

  1320.     sws_init_swScale_altivec(c);

  1321.     return swScale_altivec;

  1322. #endif

  1323. #endif //!CONFIG_RUNTIME_CPUDETECT

  1324. 

  1325.     return swScale_c;

  1326. }

  1327. 

  1328. static void copyPlane(const uint8_t *src, int srcStride,

  1329.                       int srcSliceY, int srcSliceH, int width,

  1330.                       uint8_t *dst, int dstStride)

  1331. {

  1332.     dst += dstStride * srcSliceY;

  1333.     if (dstStride == srcStride && srcStride > 0) {

  1334.         memcpy(dst, src, srcSliceH * dstStride);

  1335.     } else {

  1336.         int i;

  1337.         for (i=0; i<srcSliceH; i++) {

  1338.             memcpy(dst, src, width);

  1339.             src += srcStride;

  1340.             dst += dstStride;

  1341.         }

  1342.     }

  1343. }

  1344. 

  1345. static int planarToNv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1346.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1347. {

  1348.     uint8_t *dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  1349. 

  1350.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1351.               dstParam[0], dstStride[0]);

  1352. 

  1353.     if (c->dstFormat == PIX_FMT_NV12)

  1354.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  1355.     else

  1356.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  1357. 

  1358.     return srcSliceH;

  1359. }

  1360. 

  1361. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1362.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1363. {

  1364.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1365. 

  1366.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1367. 

  1368.     return srcSliceH;

  1369. }

  1370. 

  1371. static int planarToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1372.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1373. {

  1374.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1375. 

  1376.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  1377. 

  1378.     return srcSliceH;

  1379. }

  1380. 

  1381. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1382.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1383. {

  1384.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1385. 

  1386.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1387. 

  1388.     return srcSliceH;

  1389. }

  1390. 

  1391. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1392.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1393. {

  1394.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1395. 

  1396.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  1397. 

  1398.     return srcSliceH;

  1399. }

  1400. 

  1401. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1402.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1403. {

  1404.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1405.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1406.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1407. 

  1408.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1409. 

  1410.     if (dstParam[3])

  1411.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1412. 

  1413.     return srcSliceH;

  1414. }

  1415. 

  1416. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1417.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1418. {

  1419.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1420.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1421.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1422. 

  1423.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1424. 

  1425.     return srcSliceH;

  1426. }

  1427. 

  1428. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1429.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1430. {

  1431.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1432.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  1433.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  1434. 

  1435.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1436. 

  1437.     if (dstParam[3])

  1438.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1439. 

  1440.     return srcSliceH;

  1441. }

  1442. 

  1443. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1444.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1445. {

  1446.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  1447.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  1448.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  1449. 

  1450.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  1451. 

  1452.     return srcSliceH;

  1453. }

  1454. 

  1455. static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1456. {

  1457.     long i;

  1458.     for (i=0; i<num_pixels; i++)

  1459.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | (src[(i<<1)+1] << 24);

  1460. }

  1461. 

  1462. static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1463. {

  1464.     long i;

  1465. 

  1466.     for (i=0; i<num_pixels; i++)

  1467.         ((uint32_t *) dst)[i] = ((const uint32_t *)palette)[src[i<<1]] | src[(i<<1)+1];

  1468. }

  1469. 

  1470. static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  1471. {

  1472.     long i;

  1473. 

  1474.     for (i=0; i<num_pixels; i++) {

  1475.         //FIXME slow?

  1476.         dst[0]= palette[src[i<<1]*4+0];

  1477.         dst[1]= palette[src[i<<1]*4+1];

  1478.         dst[2]= palette[src[i<<1]*4+2];

  1479.         dst+= 3;

  1480.     }

  1481. }

  1482. 

  1483. static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1484.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1485. {

  1486.     const enum PixelFormat srcFormat= c->srcFormat;

  1487.     const enum PixelFormat dstFormat= c->dstFormat;

  1488.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  1489.                  const uint8_t *palette)=NULL;

  1490.     int i;

  1491.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1492.     const uint8_t *srcPtr= src[0];

  1493. 

  1494.     if (srcFormat == PIX_FMT_Y400A) {

  1495.         switch (dstFormat) {

  1496.         case PIX_FMT_RGB32  : conv = gray8aToPacked32; break;

  1497.         case PIX_FMT_BGR32  : conv = gray8aToPacked32; break;

  1498.         case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;

  1499.         case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;

  1500.         case PIX_FMT_RGB24  : conv = gray8aToPacked24; break;

  1501.         case PIX_FMT_BGR24  : conv = gray8aToPacked24; break;

  1502.         }

  1503.     } else if (usePal(srcFormat)) {

  1504.         switch (dstFormat) {

  1505.         case PIX_FMT_RGB32  : conv = sws_convertPalette8ToPacked32; break;

  1506.         case PIX_FMT_BGR32  : conv = sws_convertPalette8ToPacked32; break;

  1507.         case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;

  1508.         case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;

  1509.         case PIX_FMT_RGB24  : conv = sws_convertPalette8ToPacked24; break;

  1510.         case PIX_FMT_BGR24  : conv = sws_convertPalette8ToPacked24; break;

  1511.         }

  1512.     }

  1513. 

  1514.     if (!conv)

  1515.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1516.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1517.     else {

  1518.         for (i=0; i<srcSliceH; i++) {

  1519.             conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  1520.             srcPtr+= srcStride[0];

  1521.             dstPtr+= dstStride[0];

  1522.         }

  1523.     }

  1524. 

  1525.     return srcSliceH;

  1526. }

  1527. 

  1528. #define isRGBA32(x) (            \

  1529.            (x) == PIX_FMT_ARGB   \

  1530.         || (x) == PIX_FMT_RGBA   \

  1531.         || (x) == PIX_FMT_BGRA   \

  1532.         || (x) == PIX_FMT_ABGR   \

  1533.         )

  1534. 

  1535. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  1536. static int rgbToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1537.                            int srcSliceH, uint8_t* dst[], int dstStride[])

  1538. {

  1539.     const enum PixelFormat srcFormat= c->srcFormat;

  1540.     const enum PixelFormat dstFormat= c->dstFormat;

  1541.     const int srcBpp= (c->srcFormatBpp + 7) >> 3;

  1542.     const int dstBpp= (c->dstFormatBpp + 7) >> 3;

  1543.     const int srcId= c->srcFormatBpp >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  1544.     const int dstId= c->dstFormatBpp >> 2;

  1545.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  1546. 

  1547. #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)

  1548. 

  1549.     if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {

  1550.         if (     CONV_IS(ABGR, RGBA)

  1551.               || CONV_IS(ARGB, BGRA)

  1552.               || CONV_IS(BGRA, ARGB)

  1553.               || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;

  1554.         else if (CONV_IS(ABGR, ARGB)

  1555.               || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;

  1556.         else if (CONV_IS(ABGR, BGRA)

  1557.               || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;

  1558.         else if (CONV_IS(BGRA, RGBA)

  1559.               || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;

  1560.         else if (CONV_IS(BGRA, ABGR)

  1561.               || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;

  1562.     } else

  1563.     /* BGR -> BGR */

  1564.     if (  (isBGRinInt(srcFormat) && isBGRinInt(dstFormat))

  1565.        || (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {

  1566.         switch(srcId | (dstId<<4)) {

  1567.         case 0x34: conv= rgb16to15; break;

  1568.         case 0x36: conv= rgb24to15; break;

  1569.         case 0x38: conv= rgb32to15; break;

  1570.         case 0x43: conv= rgb15to16; break;

  1571.         case 0x46: conv= rgb24to16; break;

  1572.         case 0x48: conv= rgb32to16; break;

  1573.         case 0x63: conv= rgb15to24; break;

  1574.         case 0x64: conv= rgb16to24; break;

  1575.         case 0x68: conv= rgb32to24; break;

  1576.         case 0x83: conv= rgb15to32; break;

  1577.         case 0x84: conv= rgb16to32; break;

  1578.         case 0x86: conv= rgb24to32; break;

  1579.         }

  1580.     } else if (  (isBGRinInt(srcFormat) && isRGBinInt(dstFormat))

  1581.              || (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {

  1582.         switch(srcId | (dstId<<4)) {

  1583.         case 0x33: conv= rgb15tobgr15; break;

  1584.         case 0x34: conv= rgb16tobgr15; break;

  1585.         case 0x36: conv= rgb24tobgr15; break;

  1586.         case 0x38: conv= rgb32tobgr15; break;

  1587.         case 0x43: conv= rgb15tobgr16; break;

  1588.         case 0x44: conv= rgb16tobgr16; break;

  1589.         case 0x46: conv= rgb24tobgr16; break;

  1590.         case 0x48: conv= rgb32tobgr16; break;

  1591.         case 0x63: conv= rgb15tobgr24; break;

  1592.         case 0x64: conv= rgb16tobgr24; break;

  1593.         case 0x66: conv= rgb24tobgr24; break;

  1594.         case 0x68: conv= rgb32tobgr24; break;

  1595.         case 0x83: conv= rgb15tobgr32; break;

  1596.         case 0x84: conv= rgb16tobgr32; break;

  1597.         case 0x86: conv= rgb24tobgr32; break;

  1598.         }

  1599.     }

  1600. 

  1601.     if (!conv) {

  1602.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  1603.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  1604.     } else {

  1605.         const uint8_t *srcPtr= src[0];

  1606.               uint8_t *dstPtr= dst[0];

  1607.         if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) && !isRGBA32(dstFormat))

  1608.             srcPtr += ALT32_CORR;

  1609. 

  1610.         if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) && !isRGBA32(srcFormat))

  1611.             dstPtr += ALT32_CORR;

  1612. 

  1613.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  1614.             conv(srcPtr, dstPtr + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  1615.         else {

  1616.             int i;

  1617.             dstPtr += dstStride[0]*srcSliceY;

  1618. 

  1619.             for (i=0; i<srcSliceH; i++) {

  1620.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  1621.                 srcPtr+= srcStride[0];

  1622.                 dstPtr+= dstStride[0];

  1623.             }

  1624.         }

  1625.     }

  1626.     return srcSliceH;

  1627. }

  1628. 

  1629. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1630.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  1631. {

  1632.     rgb24toyv12(

  1633.         src[0],

  1634.         dst[0]+ srcSliceY    *dstStride[0],

  1635.         dst[1]+(srcSliceY>>1)*dstStride[1],

  1636.         dst[2]+(srcSliceY>>1)*dstStride[2],

  1637.         c->srcW, srcSliceH,

  1638.         dstStride[0], dstStride[1], srcStride[0]);

  1639.     if (dst[3])

  1640.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1641.     return srcSliceH;

  1642. }

  1643. 

  1644. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1645.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1646. {

  1647.     copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,

  1648.               dst[0], dstStride[0]);

  1649. 

  1650.     planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  1651.              srcSliceH >> 2, srcStride[1], dstStride[1]);

  1652.     planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  1653.              srcSliceH >> 2, srcStride[2], dstStride[2]);

  1654.     if (dst[3])

  1655.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  1656.     return srcSliceH;

  1657. }

  1658. 

  1659. /* unscaled copy like stuff (assumes nearly identical formats) */

  1660. static int packedCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1661.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1662. {

  1663.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1664.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  1665.     else {

  1666.         int i;

  1667.         const uint8_t *srcPtr= src[0];

  1668.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  1669.         int length=0;

  1670. 

  1671.         /* universal length finder */

  1672.         while(length+c->srcW <= FFABS(dstStride[0])

  1673.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  1674.         assert(length!=0);

  1675. 

  1676.         for (i=0; i<srcSliceH; i++) {

  1677.             memcpy(dstPtr, srcPtr, length);

  1678.             srcPtr+= srcStride[0];

  1679.             dstPtr+= dstStride[0];

  1680.         }

  1681.     }

  1682.     return srcSliceH;

  1683. }

  1684. 

  1685. static int planarCopyWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,

  1686.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  1687. {

  1688.     int plane, i, j;

  1689.     for (plane=0; plane<4; plane++) {

  1690.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  1691.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  1692.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  1693.         const uint8_t *srcPtr= src[plane];

  1694.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  1695. 

  1696.         if (!dst[plane]) continue;

  1697.         // ignore palette for GRAY8

  1698.         if (plane == 1 && !dst[2]) continue;

  1699.         if (!src[plane] || (plane == 1 && !src[2])) {

  1700.             if(is16BPS(c->dstFormat))

  1701.                 length*=2;

  1702.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  1703.         } else {

  1704.             if(is9_OR_10BPS(c->srcFormat)) {

  1705.                 const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1+1;

  1706.                 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1+1;

  1707.                 const uint16_t *srcPtr2 = (const uint16_t*)srcPtr;

  1708. 

  1709.                 if (is16BPS(c->dstFormat)) {

  1710.                     uint16_t *dstPtr2 = (uint16_t*)dstPtr;

  1711. #define COPY9_OR_10TO16(rfunc, wfunc) \

  1712.                     for (i = 0; i < height; i++) { \

  1713.                         for (j = 0; j < length; j++) { \

  1714.                             int srcpx = rfunc(&srcPtr2[j]); \

  1715.                             wfunc(&dstPtr2[j], (srcpx<<(16-src_depth)) | (srcpx>>(2*src_depth-16))); \

  1716.                         } \

  1717.                         dstPtr2 += dstStride[plane]/2; \

  1718.                         srcPtr2 += srcStride[plane]/2; \

  1719.                     }

  1720.                     if (isBE(c->dstFormat)) {

  1721.                         if (isBE(c->srcFormat)) {

  1722.                             COPY9_OR_10TO16(AV_RB16, AV_WB16);

  1723.                         } else {

  1724.                             COPY9_OR_10TO16(AV_RL16, AV_WB16);

  1725.                         }

  1726.                     } else {

  1727.                         if (isBE(c->srcFormat)) {

  1728.                             COPY9_OR_10TO16(AV_RB16, AV_WL16);

  1729.                         } else {

  1730.                             COPY9_OR_10TO16(AV_RL16, AV_WL16);

  1731.                         }

  1732.                     }

  1733.                 } else if (is9_OR_10BPS(c->dstFormat)) {

  1734.                     uint16_t *dstPtr2 = (uint16_t*)dstPtr;

  1735. #define COPY9_OR_10TO9_OR_10(loop) \

  1736.                     for (i = 0; i < height; i++) { \

  1737.                         for (j = 0; j < length; j++) { \

  1738.                             loop; \

  1739.                         } \

  1740.                         dstPtr2 += dstStride[plane]/2; \

  1741.                         srcPtr2 += srcStride[plane]/2; \

  1742.                     }

  1743. #define COPY9_OR_10TO9_OR_10_2(rfunc, wfunc) \

  1744.                     if (dst_depth > src_depth) { \

  1745.                         COPY9_OR_10TO9_OR_10(int srcpx = rfunc(&srcPtr2[j]); \

  1746.                             wfunc(&dstPtr2[j], (srcpx << 1) | (srcpx >> 9))); \

  1747.                     } else if (dst_depth < src_depth) { \

  1748.                         COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]) >> 1)); \

  1749.                     } else { \

  1750.                         COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]))); \

  1751.                     }

  1752.                     if (isBE(c->dstFormat)) {

  1753.                         if (isBE(c->srcFormat)) {

  1754.                             COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WB16);

  1755.                         } else {

  1756.                             COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WB16);

  1757.                         }

  1758.                     } else {

  1759.                         if (isBE(c->srcFormat)) {

  1760.                             COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WL16);

  1761.                         } else {

  1762.                             COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WL16);

  1763.                         }

  1764.                     }

  1765.                 } else {

  1766.                     // FIXME Maybe dither instead.

  1767. #define COPY9_OR_10TO8(rfunc) \

  1768.                     for (i = 0; i < height; i++) { \

  1769.                         for (j = 0; j < length; j++) { \

  1770.                             dstPtr[j] = rfunc(&srcPtr2[j])>>(src_depth-8); \

  1771.                         } \

  1772.                         dstPtr  += dstStride[plane]; \

  1773.                         srcPtr2 += srcStride[plane]/2; \

  1774.                     }

  1775.                     if (isBE(c->srcFormat)) {

  1776.                         COPY9_OR_10TO8(AV_RB16);

  1777.                     } else {

  1778.                         COPY9_OR_10TO8(AV_RL16);

  1779.                     }

  1780.                 }

  1781.             } else if(is9_OR_10BPS(c->dstFormat)) {

  1782.                 const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1+1;

  1783.                 uint16_t *dstPtr2 = (uint16_t*)dstPtr;

  1784. 

  1785.                 if (is16BPS(c->srcFormat)) {

  1786.                     const uint16_t *srcPtr2 = (const uint16_t*)srcPtr;

  1787. #define COPY16TO9_OR_10(rfunc, wfunc) \

  1788.                     for (i = 0; i < height; i++) { \

  1789.                         for (j = 0; j < length; j++) { \

  1790.                             wfunc(&dstPtr2[j], rfunc(&srcPtr2[j])>>(16-dst_depth)); \

  1791.                         } \

  1792.                         dstPtr2 += dstStride[plane]/2; \

  1793.                         srcPtr2 += srcStride[plane]/2; \

  1794.                     }

  1795.                     if (isBE(c->dstFormat)) {

  1796.                         if (isBE(c->srcFormat)) {

  1797.                             COPY16TO9_OR_10(AV_RB16, AV_WB16);

  1798.                         } else {

  1799.                             COPY16TO9_OR_10(AV_RL16, AV_WB16);

  1800.                         }

  1801.                     } else {

  1802.                         if (isBE(c->srcFormat)) {

  1803.                             COPY16TO9_OR_10(AV_RB16, AV_WL16);

  1804.                         } else {

  1805.                             COPY16TO9_OR_10(AV_RL16, AV_WL16);

  1806.                         }

  1807.                     }

  1808.                 } else /* 8bit */ {

  1809. #define COPY8TO9_OR_10(wfunc) \

  1810.                     for (i = 0; i < height; i++) { \

  1811.                         for (j = 0; j < length; j++) { \

  1812.                             const int srcpx = srcPtr[j]; \

  1813.                             wfunc(&dstPtr2[j], (srcpx<<(dst_depth-8)) | (srcpx >> (16-dst_depth))); \

  1814.                         } \

  1815.                         dstPtr2 += dstStride[plane]/2; \

  1816.                         srcPtr  += srcStride[plane]; \

  1817.                     }

  1818.                     if (isBE(c->dstFormat)) {

  1819.                         COPY8TO9_OR_10(AV_WB16);

  1820.                     } else {

  1821.                         COPY8TO9_OR_10(AV_WL16);

  1822.                     }

  1823.                 }

  1824.             } else if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  1825.                 if (!isBE(c->srcFormat)) srcPtr++;

  1826.                 for (i=0; i<height; i++) {

  1827.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  1828.                     srcPtr+= srcStride[plane];

  1829.                     dstPtr+= dstStride[plane];

  1830.                 }

  1831.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  1832.                 for (i=0; i<height; i++) {

  1833.                     for (j=0; j<length; j++) {

  1834.                         dstPtr[ j<<1   ] = srcPtr[j];

  1835.                         dstPtr[(j<<1)+1] = srcPtr[j];

  1836.                     }

  1837.                     srcPtr+= srcStride[plane];

  1838.                     dstPtr+= dstStride[plane];

  1839.                 }

  1840.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  1841.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  1842. 

  1843.                 for (i=0; i<height; i++) {

  1844.                     for (j=0; j<length; j++)

  1845.                         ((uint16_t*)dstPtr)[j] = av_bswap16(((const uint16_t*)srcPtr)[j]);

  1846.                     srcPtr+= srcStride[plane];

  1847.                     dstPtr+= dstStride[plane];

  1848.                 }

  1849.             } else if (dstStride[plane] == srcStride[plane] &&

  1850.                        srcStride[plane] > 0 && srcStride[plane] == length) {

  1851.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane],

  1852.                        height*dstStride[plane]);

  1853.             } else {

  1854.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  1855.                     length*=2;

  1856.                 for (i=0; i<height; i++) {

  1857.                     memcpy(dstPtr, srcPtr, length);

  1858.                     srcPtr+= srcStride[plane];

  1859.                     dstPtr+= dstStride[plane];

  1860.                 }

  1861.             }

  1862.         }

  1863.     }

  1864.     return srcSliceH;

  1865. }

  1866. 

  1867. int ff_hardcodedcpuflags(void)

  1868. {

  1869.     int flags = 0;

  1870. #if   COMPILE_TEMPLATE_MMX2

  1871.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  1872. #elif COMPILE_TEMPLATE_AMD3DNOW

  1873.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  1874. #elif COMPILE_TEMPLATE_MMX

  1875.     flags |= SWS_CPU_CAPS_MMX;

  1876. #elif COMPILE_TEMPLATE_ALTIVEC

  1877.     flags |= SWS_CPU_CAPS_ALTIVEC;

  1878. #elif ARCH_BFIN

  1879.     flags |= SWS_CPU_CAPS_BFIN;

  1880. #endif

  1881.     return flags;

  1882. }

  1883. 

  1884. void ff_get_unscaled_swscale(SwsContext *c)

  1885. {

  1886.     const enum PixelFormat srcFormat = c->srcFormat;

  1887.     const enum PixelFormat dstFormat = c->dstFormat;

  1888.     const int flags = c->flags;

  1889.     const int dstH = c->dstH;

  1890.     int needsDither;

  1891. 

  1892.     needsDither= isAnyRGB(dstFormat)

  1893.         &&  c->dstFormatBpp < 24

  1894.         && (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));

  1895. 

  1896.     /* yv12_to_nv12 */

  1897.     if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  1898.         c->swScale= planarToNv12Wrapper;

  1899.     }

  1900.     /* yuv2bgr */

  1901.     if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && isAnyRGB(dstFormat)

  1902.         && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  1903.         c->swScale= ff_yuv2rgb_get_func_ptr(c);

  1904.     }

  1905. 

  1906.     if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  1907.         c->swScale= yvu9ToYv12Wrapper;

  1908.     }

  1909. 

  1910.     /* bgr24toYV12 */

  1911.     if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  1912.         c->swScale= bgr24ToYv12Wrapper;

  1913. 

  1914.     /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  1915.     if (   isAnyRGB(srcFormat)

  1916.         && isAnyRGB(dstFormat)

  1917.         && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  1918.         && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  1919.         && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  1920.         && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  1921.         && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  1922.         && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  1923.         && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  1924.         && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  1925.         && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  1926.         && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  1927.         && srcFormat != PIX_FMT_BGR48LE   && dstFormat != PIX_FMT_BGR48LE

  1928.         && srcFormat != PIX_FMT_BGR48BE   && dstFormat != PIX_FMT_BGR48BE

  1929.         && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  1930.         c->swScale= rgbToRgbWrapper;

  1931. 

  1932.     if ((usePal(srcFormat) && (

  1933.         dstFormat == PIX_FMT_RGB32   ||

  1934.         dstFormat == PIX_FMT_RGB32_1 ||

  1935.         dstFormat == PIX_FMT_RGB24   ||

  1936.         dstFormat == PIX_FMT_BGR32   ||

  1937.         dstFormat == PIX_FMT_BGR32_1 ||

  1938.         dstFormat == PIX_FMT_BGR24)))

  1939.         c->swScale= palToRgbWrapper;

  1940. 

  1941.     if (srcFormat == PIX_FMT_YUV422P) {

  1942.         if (dstFormat == PIX_FMT_YUYV422)

  1943.             c->swScale= yuv422pToYuy2Wrapper;

  1944.         else if (dstFormat == PIX_FMT_UYVY422)

  1945.             c->swScale= yuv422pToUyvyWrapper;

  1946.     }

  1947. 

  1948.     /* LQ converters if -sws 0 or -sws 4*/

  1949.     if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  1950.         /* yv12_to_yuy2 */

  1951.         if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  1952.             if (dstFormat == PIX_FMT_YUYV422)

  1953.                 c->swScale= planarToYuy2Wrapper;

  1954.             else if (dstFormat == PIX_FMT_UYVY422)

  1955.                 c->swScale= planarToUyvyWrapper;

  1956.         }

  1957.     }

  1958.     if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1959.         c->swScale= yuyvToYuv420Wrapper;

  1960.     if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  1961.         c->swScale= uyvyToYuv420Wrapper;

  1962.     if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  1963.         c->swScale= yuyvToYuv422Wrapper;

  1964.     if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  1965.         c->swScale= uyvyToYuv422Wrapper;

  1966. 

  1967. #if COMPILE_ALTIVEC

  1968.     if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  1969.         !(c->flags & SWS_BITEXACT) &&

  1970.         srcFormat == PIX_FMT_YUV420P) {

  1971.         // unscaled YV12 -> packed YUV, we want speed

  1972.         if (dstFormat == PIX_FMT_YUYV422)

  1973.             c->swScale= yv12toyuy2_unscaled_altivec;

  1974.         else if (dstFormat == PIX_FMT_UYVY422)

  1975.             c->swScale= yv12touyvy_unscaled_altivec;

  1976.     }

  1977. #endif

  1978. 

  1979.     /* simple copy */

  1980.     if (  srcFormat == dstFormat

  1981.         || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  1982.         || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  1983.         || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  1984.         || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  1985.         || (isGray(dstFormat) && isGray(srcFormat))

  1986.         || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  1987.             && c->chrDstHSubSample == c->chrSrcHSubSample

  1988.             && c->chrDstVSubSample == c->chrSrcVSubSample

  1989.             && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  1990.             && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  1991.     {

  1992.         if (isPacked(c->srcFormat))

  1993.             c->swScale= packedCopyWrapper;

  1994.         else /* Planar YUV or gray */

  1995.             c->swScale= planarCopyWrapper;

  1996.     }

  1997. #if ARCH_BFIN

  1998.     if (flags & SWS_CPU_CAPS_BFIN)

  1999.         ff_bfin_get_unscaled_swscale (c);

  2000. #endif

  2001. }

  2002. 

  2003. static void reset_ptr(const uint8_t* src[], int format)

  2004. {

  2005.     if(!isALPHA(format))

  2006.         src[3]=NULL;

  2007.     if(!isPlanarYUV(format)) {

  2008.         src[3]=src[2]=NULL;

  2009. 

  2010.         if (!usePal(format))

  2011.             src[1]= NULL;

  2012.     }

  2013. }

  2014. 

  2015. static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,

  2016.                                 const int linesizes[4])

  2017. {

  2018.     const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];

  2019.     int i;

  2020. 

  2021.     for (i = 0; i < 4; i++) {

  2022.         int plane = desc->comp[i].plane;

  2023.         if (!data[plane] || !linesizes[plane])

  2024.             return 0;

  2025.     }

  2026. 

  2027.     return 1;

  2028. }

  2029. 

  2030. /**

  2031.  * swscale wrapper, so we don't need to export the SwsContext.

  2032.  * Assumes planar YUV to be in YUV order instead of YVU.

  2033.  */

  2034. int sws_scale(SwsContext *c, const uint8_t* const src[], const int srcStride[], int srcSliceY,

  2035.               int srcSliceH, uint8_t* const dst[], const int dstStride[])

  2036. {

  2037.     int i;

  2038.     const uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  2039.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  2040. 

  2041.     // do not mess up sliceDir if we have a "trailing" 0-size slice

  2042.     if (srcSliceH == 0)

  2043.         return 0;

  2044. 

  2045.     if (!check_image_pointers(src, c->srcFormat, srcStride)) {

  2046.         av_log(c, AV_LOG_ERROR, "bad src image pointers\n");

  2047.         return 0;

  2048.     }

  2049.     if (!check_image_pointers(dst, c->dstFormat, dstStride)) {

  2050.         av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");

  2051.         return 0;

  2052.     }

  2053. 

  2054.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  2055.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  2056.         return 0;

  2057.     }

  2058.     if (c->sliceDir == 0) {

  2059.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  2060.     }

  2061. 

  2062.     if (usePal(c->srcFormat)) {

  2063.         for (i=0; i<256; i++) {

  2064.             int p, r, g, b,y,u,v;

  2065.             if(c->srcFormat == PIX_FMT_PAL8) {

  2066.                 p=((const uint32_t*)(src[1]))[i];

  2067.                 r= (p>>16)&0xFF;

  2068.                 g= (p>> 8)&0xFF;

  2069.                 b=  p     &0xFF;

  2070.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  2071.                 r= (i>>5    )*36;

  2072.                 g= ((i>>2)&7)*36;

  2073.                 b= (i&3     )*85;

  2074.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  2075.                 b= (i>>6    )*85;

  2076.                 g= ((i>>3)&7)*36;

  2077.                 r= (i&7     )*36;

  2078.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  2079.                 r= (i>>3    )*255;

  2080.                 g= ((i>>1)&3)*85;

  2081.                 b= (i&1     )*255;

  2082.             } else if(c->srcFormat == PIX_FMT_GRAY8 || c->srcFormat == PIX_FMT_Y400A) {

  2083.                 r = g = b = i;

  2084.             } else {

  2085.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  2086.                 b= (i>>3    )*255;

  2087.                 g= ((i>>1)&3)*85;

  2088.                 r= (i&1     )*255;

  2089.             }

  2090.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2091.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2092.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  2093.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  2094. 

  2095.             switch(c->dstFormat) {

  2096.             case PIX_FMT_BGR32:

  2097. #if !HAVE_BIGENDIAN

  2098.             case PIX_FMT_RGB24:

  2099. #endif

  2100.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  2101.                 break;

  2102.             case PIX_FMT_BGR32_1:

  2103. #if HAVE_BIGENDIAN

  2104.             case PIX_FMT_BGR24:

  2105. #endif

  2106.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  2107.                 break;

  2108.             case PIX_FMT_RGB32_1:

  2109. #if HAVE_BIGENDIAN

  2110.             case PIX_FMT_RGB24:

  2111. #endif

  2112.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  2113.                 break;

  2114.             case PIX_FMT_RGB32:

  2115. #if !HAVE_BIGENDIAN

  2116.             case PIX_FMT_BGR24:

  2117. #endif

  2118.             default:

  2119.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  2120.             }

  2121.         }

  2122.     }

  2123. 

  2124.     // copy strides, so they can safely be modified

  2125.     if (c->sliceDir == 1) {

  2126.         // slices go from top to bottom

  2127.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  2128.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  2129. 

  2130.         reset_ptr(src2, c->srcFormat);

  2131.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2132. 

  2133.         /* reset slice direction at end of frame */

  2134.         if (srcSliceY + srcSliceH == c->srcH)

  2135.             c->sliceDir = 0;

  2136. 

  2137.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  2138.     } else {

  2139.         // slices go from bottom to top => we flip the image internally

  2140.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  2141.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  2142. 

  2143.         src2[0] += (srcSliceH-1)*srcStride[0];

  2144.         if (!usePal(c->srcFormat))

  2145.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  2146.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  2147.         src2[3] += (srcSliceH-1)*srcStride[3];

  2148.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  2149.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  2150.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  2151.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  2152. 

  2153.         reset_ptr(src2, c->srcFormat);

  2154.         reset_ptr((const uint8_t**)dst2, c->dstFormat);

  2155. 

  2156.         /* reset slice direction at end of frame */

  2157.         if (!srcSliceY)

  2158.             c->sliceDir = 0;

  2159. 

  2160.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  2161.     }

  2162. }

  2163. 

  2164. /* Convert the palette to the same packed 32-bit format as the palette */

  2165. void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2166. {

  2167.     long i;

  2168. 

  2169.     for (i=0; i<num_pixels; i++)

  2170.         ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];

  2171. }

  2172. 

  2173. /* Palette format: ABCD -> dst format: ABC */

  2174. void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst, long num_pixels, const uint8_t *palette)

  2175. {

  2176.     long i;

  2177. 

  2178.     for (i=0; i<num_pixels; i++) {

  2179.         //FIXME slow?

  2180.         dst[0]= palette[src[i]*4+0];

  2181.         dst[1]= palette[src[i]*4+1];

  2182.         dst[2]= palette[src[i]*4+2];

  2183.         dst+= 3;

  2184.     }

  2185. }