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FFmpeg/libswscale/yuv2rgb.c

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  1. /*

  2.  * yuv2rgb.c, Software YUV to RGB coverter

  3.  *

  4.  *  Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>

  5.  *  All Rights Reserved.

  6.  *

  7.  *  Functions broken out from display_x11.c and several new modes

  8.  *  added by Håkan Hjort <d95hjort@dtek.chalmers.se>

  9.  *

  10.  *  15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>

  11.  *

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

  13.  *

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

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

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

  17.  *  any later version.

  18.  *

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

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

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

  22.  *  GNU General Public License for more details.

  23.  *

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

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

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

  27.  *

  28.  * MMX/MMX2 Template stuff from Michael Niedermayer (michaelni@gmx.at) (needed for fast movntq support)

  29.  * 1,4,8bpp support by Michael Niedermayer (michaelni@gmx.at)

  30.  * context / deglobalize stuff by Michael Niedermayer

  31.  */

  32. 

  33. #include <stdio.h>

  34. #include <stdlib.h>

  35. #include <inttypes.h>

  36. #include <assert.h>

  37. 

  38. #include "config.h"

  39. #include "rgb2rgb.h"

  40. #include "swscale.h"

  41. #include "swscale_internal.h"

  42. 

  43. #ifdef HAVE_MLIB

  44. #include "yuv2rgb_mlib.c"

  45. #endif

  46. 

  47. #define DITHER1XBPP // only for mmx

  48. 

  49. const uint8_t  __attribute__((aligned(8))) dither_2x2_4[2][8]={

  50. {  1,   3,   1,   3,   1,   3,   1,   3, },

  51. {  2,   0,   2,   0,   2,   0,   2,   0, },

  52. };

  53. 

  54. const uint8_t  __attribute__((aligned(8))) dither_2x2_8[2][8]={

  55. {  6,   2,   6,   2,   6,   2,   6,   2, },

  56. {  0,   4,   0,   4,   0,   4,   0,   4, },

  57. };

  58. 

  59. const uint8_t  __attribute__((aligned(8))) dither_8x8_32[8][8]={

  60. { 17,   9,  23,  15,  16,   8,  22,  14, },

  61. {  5,  29,   3,  27,   4,  28,   2,  26, },

  62. { 21,  13,  19,  11,  20,  12,  18,  10, },

  63. {  0,  24,   6,  30,   1,  25,   7,  31, },

  64. { 16,   8,  22,  14,  17,   9,  23,  15, },

  65. {  4,  28,   2,  26,   5,  29,   3,  27, },

  66. { 20,  12,  18,  10,  21,  13,  19,  11, },

  67. {  1,  25,   7,  31,   0,  24,   6,  30, },

  68. };

  69. 

  70. #if 0

  71. const uint8_t  __attribute__((aligned(8))) dither_8x8_64[8][8]={

  72. {  0,  48,  12,  60,   3,  51,  15,  63, },

  73. { 32,  16,  44,  28,  35,  19,  47,  31, },

  74. {  8,  56,   4,  52,  11,  59,   7,  55, },

  75. { 40,  24,  36,  20,  43,  27,  39,  23, },

  76. {  2,  50,  14,  62,   1,  49,  13,  61, },

  77. { 34,  18,  46,  30,  33,  17,  45,  29, },

  78. { 10,  58,   6,  54,   9,  57,   5,  53, },

  79. { 42,  26,  38,  22,  41,  25,  37,  21, },

  80. };

  81. #endif

  82. 

  83. const uint8_t  __attribute__((aligned(8))) dither_8x8_73[8][8]={

  84. {  0,  55,  14,  68,   3,  58,  17,  72, },

  85. { 37,  18,  50,  32,  40,  22,  54,  35, },

  86. {  9,  64,   5,  59,  13,  67,   8,  63, },

  87. { 46,  27,  41,  23,  49,  31,  44,  26, },

  88. {  2,  57,  16,  71,   1,  56,  15,  70, },

  89. { 39,  21,  52,  34,  38,  19,  51,  33, },

  90. { 11,  66,   7,  62,  10,  65,   6,  60, },

  91. { 48,  30,  43,  25,  47,  29,  42,  24, },

  92. };

  93. 

  94. #if 0

  95. const uint8_t  __attribute__((aligned(8))) dither_8x8_128[8][8]={

  96. { 68,  36,  92,  60,  66,  34,  90,  58, },

  97. { 20, 116,  12, 108,  18, 114,  10, 106, },

  98. { 84,  52,  76,  44,  82,  50,  74,  42, },

  99. {  0,  96,  24, 120,   6, 102,  30, 126, },

  100. { 64,  32,  88,  56,  70,  38,  94,  62, },

  101. { 16, 112,   8, 104,  22, 118,  14, 110, },

  102. { 80,  48,  72,  40,  86,  54,  78,  46, },

  103. {  4, 100,  28, 124,   2,  98,  26, 122, },

  104. };

  105. #endif

  106. 

  107. #if 1

  108. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  109. {117,  62, 158, 103, 113,  58, 155, 100, },

  110. { 34, 199,  21, 186,  31, 196,  17, 182, },

  111. {144,  89, 131,  76, 141,  86, 127,  72, },

  112. {  0, 165,  41, 206,  10, 175,  52, 217, },

  113. {110,  55, 151,  96, 120,  65, 162, 107, },

  114. { 28, 193,  14, 179,  38, 203,  24, 189, },

  115. {138,  83, 124,  69, 148,  93, 134,  79, },

  116. {  7, 172,  48, 213,   3, 168,  45, 210, },

  117. };

  118. #elif 1

  119. // tries to correct a gamma of 1.5

  120. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  121. {  0, 143,  18, 200,   2, 156,  25, 215, },

  122. { 78,  28, 125,  64,  89,  36, 138,  74, },

  123. { 10, 180,   3, 161,  16, 195,   8, 175, },

  124. {109,  51,  93,  38, 121,  60, 105,  47, },

  125. {  1, 152,  23, 210,   0, 147,  20, 205, },

  126. { 85,  33, 134,  71,  81,  30, 130,  67, },

  127. { 14, 190,   6, 171,  12, 185,   5, 166, },

  128. {117,  57, 101,  44, 113,  54,  97,  41, },

  129. };

  130. #elif 1

  131. // tries to correct a gamma of 2.0

  132. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  133. {  0, 124,   8, 193,   0, 140,  12, 213, },

  134. { 55,  14, 104,  42,  66,  19, 119,  52, },

  135. {  3, 168,   1, 145,   6, 187,   3, 162, },

  136. { 86,  31,  70,  21,  99,  39,  82,  28, },

  137. {  0, 134,  11, 206,   0, 129,   9, 200, },

  138. { 62,  17, 114,  48,  58,  16, 109,  45, },

  139. {  5, 181,   2, 157,   4, 175,   1, 151, },

  140. { 95,  36,  78,  26,  90,  34,  74,  24, },

  141. };

  142. #else

  143. // tries to correct a gamma of 2.5

  144. const uint8_t  __attribute__((aligned(8))) dither_8x8_220[8][8]={

  145. {  0, 107,   3, 187,   0, 125,   6, 212, },

  146. { 39,   7,  86,  28,  49,  11, 102,  36, },

  147. {  1, 158,   0, 131,   3, 180,   1, 151, },

  148. { 68,  19,  52,  12,  81,  25,  64,  17, },

  149. {  0, 119,   5, 203,   0, 113,   4, 195, },

  150. { 45,   9,  96,  33,  42,   8,  91,  30, },

  151. {  2, 172,   1, 144,   2, 165,   0, 137, },

  152. { 77,  23,  60,  15,  72,  21,  56,  14, },

  153. };

  154. #endif

  155. 

  156. #ifdef HAVE_MMX

  157. 

  158. /* hope these constant values are cache line aligned */

  159. static uint64_t attribute_used __attribute__((aligned(8))) mmx_00ffw = 0x00ff00ff00ff00ffULL;

  160. static uint64_t attribute_used __attribute__((aligned(8))) mmx_redmask = 0xf8f8f8f8f8f8f8f8ULL;

  161. static uint64_t attribute_used __attribute__((aligned(8))) mmx_grnmask = 0xfcfcfcfcfcfcfcfcULL;

  162. 

  163. static uint64_t attribute_used __attribute__((aligned(8))) M24A=   0x00FF0000FF0000FFULL;

  164. static uint64_t attribute_used __attribute__((aligned(8))) M24B=   0xFF0000FF0000FF00ULL;

  165. static uint64_t attribute_used __attribute__((aligned(8))) M24C=   0x0000FF0000FF0000ULL;

  166. 

  167. // the volatile is required because gcc otherwise optimizes some writes away not knowing that these

  168. // are read in the asm block

  169. static volatile uint64_t attribute_used __attribute__((aligned(8))) b5Dither;

  170. static volatile uint64_t attribute_used __attribute__((aligned(8))) g5Dither;

  171. static volatile uint64_t attribute_used __attribute__((aligned(8))) g6Dither;

  172. static volatile uint64_t attribute_used __attribute__((aligned(8))) r5Dither;

  173. 

  174. static uint64_t __attribute__((aligned(8))) dither4[2]={

  175. 	0x0103010301030103LL,

  176. 	0x0200020002000200LL,};

  177. 

  178. static uint64_t __attribute__((aligned(8))) dither8[2]={

  179. 	0x0602060206020602LL,

  180. 	0x0004000400040004LL,};

  181. 

  182. #undef HAVE_MMX

  183. 

  184. //MMX versions

  185. #undef RENAME

  186. #define HAVE_MMX

  187. #undef HAVE_MMX2

  188. #undef HAVE_3DNOW

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

  190. #include "yuv2rgb_template.c"

  191. 

  192. //MMX2 versions

  193. #undef RENAME

  194. #define HAVE_MMX

  195. #define HAVE_MMX2

  196. #undef HAVE_3DNOW

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

  198. #include "yuv2rgb_template.c"

  199. 

  200. #endif /* defined(ARCH_X86) */

  201. 

  202. const int32_t Inverse_Table_6_9[8][4] = {

  203.     {117504, 138453, 13954, 34903}, /* no sequence_display_extension */

  204.     {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */

  205.     {104597, 132201, 25675, 53279}, /* unspecified */

  206.     {104597, 132201, 25675, 53279}, /* reserved */

  207.     {104448, 132798, 24759, 53109}, /* FCC */

  208.     {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */

  209.     {104597, 132201, 25675, 53279}, /* SMPTE 170M */

  210.     {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */

  211. };

  212. 

  213. #define RGB(i)					\

  214. 	U = pu[i];				\

  215. 	V = pv[i];				\

  216. 	r = (void *)c->table_rV[V];			\

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

  218. 	b = (void *)c->table_bU[U];

  219. 

  220. #define DST1(i)					\

  221. 	Y = py_1[2*i];				\

  222. 	dst_1[2*i] = r[Y] + g[Y] + b[Y];	\

  223. 	Y = py_1[2*i+1];			\

  224. 	dst_1[2*i+1] = r[Y] + g[Y] + b[Y];

  225. 

  226. #define DST2(i)					\

  227. 	Y = py_2[2*i];				\

  228. 	dst_2[2*i] = r[Y] + g[Y] + b[Y];	\

  229. 	Y = py_2[2*i+1];			\

  230. 	dst_2[2*i+1] = r[Y] + g[Y] + b[Y];

  231. 

  232. #define DST1RGB(i)							\

  233. 	Y = py_1[2*i];							\

  234. 	dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y];	\

  235. 	Y = py_1[2*i+1];						\

  236. 	dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];

  237. 

  238. #define DST2RGB(i)							\

  239. 	Y = py_2[2*i];							\

  240. 	dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y];	\

  241. 	Y = py_2[2*i+1];						\

  242. 	dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];

  243. 

  244. #define DST1BGR(i)							\

  245. 	Y = py_1[2*i];							\

  246. 	dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y];	\

  247. 	Y = py_1[2*i+1];						\

  248. 	dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];

  249. 

  250. #define DST2BGR(i)							\

  251. 	Y = py_2[2*i];							\

  252. 	dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y];	\

  253. 	Y = py_2[2*i+1];						\

  254. 	dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];

  255. 

  256. #define PROLOG(func_name, dst_type) \

  257. static int func_name(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY, \

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

  259.     int y;\

  260. \

  261.     if(c->srcFormat == PIX_FMT_YUV422P){\

  262. 	srcStride[1] *= 2;\

  263. 	srcStride[2] *= 2;\

  264.     }\

  265.     for(y=0; y<srcSliceH; y+=2){\

  266. 	dst_type *dst_1= (dst_type*)(dst[0] + (y+srcSliceY  )*dstStride[0]);\

  267. 	dst_type *dst_2= (dst_type*)(dst[0] + (y+srcSliceY+1)*dstStride[0]);\

  268. 	dst_type attribute_unused *r, *b;\

  269. 	dst_type *g;\

  270. 	uint8_t *py_1= src[0] + y*srcStride[0];\

  271. 	uint8_t *py_2= py_1 + srcStride[0];\

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

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

  274. 	unsigned int h_size= c->dstW>>3;\

  275. 	while (h_size--) {\

  276. 	    int attribute_unused U, V;\

  277. 	    int Y;\

  278. 

  279. #define EPILOG(dst_delta)\

  280. 	    pu += 4;\

  281. 	    pv += 4;\

  282. 	    py_1 += 8;\

  283. 	    py_2 += 8;\

  284. 	    dst_1 += dst_delta;\

  285. 	    dst_2 += dst_delta;\

  286. 	}\

  287.     }\

  288.     return srcSliceH;\

  289. }

  290. 

  291. PROLOG(yuv2rgb_c_32, uint32_t)

  292. 	RGB(0);

  293. 	DST1(0);

  294. 	DST2(0);

  295. 

  296. 	RGB(1);

  297. 	DST2(1);

  298. 	DST1(1);

  299. 

  300. 	RGB(2);

  301. 	DST1(2);

  302. 	DST2(2);

  303. 

  304. 	RGB(3);

  305. 	DST2(3);

  306. 	DST1(3);

  307. EPILOG(8)

  308. 

  309. PROLOG(yuv2rgb_c_24_rgb, uint8_t)

  310. 	RGB(0);

  311. 	DST1RGB(0);

  312. 	DST2RGB(0);

  313. 

  314. 	RGB(1);

  315. 	DST2RGB(1);

  316. 	DST1RGB(1);

  317. 

  318. 	RGB(2);

  319. 	DST1RGB(2);

  320. 	DST2RGB(2);

  321. 

  322. 	RGB(3);

  323. 	DST2RGB(3);

  324. 	DST1RGB(3);

  325. EPILOG(24)

  326. 

  327. // only trivial mods from yuv2rgb_c_24_rgb

  328. PROLOG(yuv2rgb_c_24_bgr, uint8_t)

  329. 	RGB(0);

  330. 	DST1BGR(0);

  331. 	DST2BGR(0);

  332. 

  333. 	RGB(1);

  334. 	DST2BGR(1);

  335. 	DST1BGR(1);

  336. 

  337. 	RGB(2);

  338. 	DST1BGR(2);

  339. 	DST2BGR(2);

  340. 

  341. 	RGB(3);

  342. 	DST2BGR(3);

  343. 	DST1BGR(3);

  344. EPILOG(24)

  345. 

  346. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  347. // r, g, b, dst_1, dst_2

  348. PROLOG(yuv2rgb_c_16, uint16_t)

  349. 	RGB(0);

  350. 	DST1(0);

  351. 	DST2(0);

  352. 

  353. 	RGB(1);

  354. 	DST2(1);

  355. 	DST1(1);

  356. 

  357. 	RGB(2);

  358. 	DST1(2);

  359. 	DST2(2);

  360. 

  361. 	RGB(3);

  362. 	DST2(3);

  363. 	DST1(3);

  364. EPILOG(8)

  365. 

  366. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  367. // r, g, b, dst_1, dst_2

  368. PROLOG(yuv2rgb_c_8, uint8_t)

  369. 	RGB(0);

  370. 	DST1(0);

  371. 	DST2(0);

  372. 

  373. 	RGB(1);

  374. 	DST2(1);

  375. 	DST1(1);

  376. 

  377. 	RGB(2);

  378. 	DST1(2);

  379. 	DST2(2);

  380. 

  381. 	RGB(3);

  382. 	DST2(3);

  383. 	DST1(3);

  384. EPILOG(8)

  385. 

  386. // r, g, b, dst_1, dst_2

  387. PROLOG(yuv2rgb_c_8_ordered_dither, uint8_t)

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

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

  390. #define DST1bpp8(i,o)					\

  391. 	Y = py_1[2*i];				\

  392. 	dst_1[2*i] = r[Y+d32[0+o]] + g[Y+d32[0+o]] + b[Y+d64[0+o]];	\

  393. 	Y = py_1[2*i+1];			\

  394. 	dst_1[2*i+1] = r[Y+d32[1+o]] + g[Y+d32[1+o]] + b[Y+d64[1+o]];

  395. 

  396. #define DST2bpp8(i,o)					\

  397. 	Y = py_2[2*i];				\

  398. 	dst_2[2*i] =  r[Y+d32[8+o]] + g[Y+d32[8+o]] + b[Y+d64[8+o]];	\

  399. 	Y = py_2[2*i+1];			\

  400. 	dst_2[2*i+1] =  r[Y+d32[9+o]] + g[Y+d32[9+o]] + b[Y+d64[9+o]];

  401. 

  402. 

  403. 	RGB(0);

  404. 	DST1bpp8(0,0);

  405. 	DST2bpp8(0,0);

  406. 

  407. 	RGB(1);

  408. 	DST2bpp8(1,2);

  409. 	DST1bpp8(1,2);

  410. 

  411. 	RGB(2);

  412. 	DST1bpp8(2,4);

  413. 	DST2bpp8(2,4);

  414. 

  415. 	RGB(3);

  416. 	DST2bpp8(3,6);

  417. 	DST1bpp8(3,6);

  418. EPILOG(8)

  419. 

  420. 

  421. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  422. // r, g, b, dst_1, dst_2

  423. PROLOG(yuv2rgb_c_4, uint8_t)

  424.         int acc;

  425. #define DST1_4(i)					\

  426. 	Y = py_1[2*i];				\

  427. 	acc = r[Y] + g[Y] + b[Y];	\

  428. 	Y = py_1[2*i+1];			\

  429.         acc |= (r[Y] + g[Y] + b[Y])<<4;\

  430. 	dst_1[i] = acc; 

  431. 

  432. #define DST2_4(i)					\

  433. 	Y = py_2[2*i];				\

  434. 	acc = r[Y] + g[Y] + b[Y];	\

  435. 	Y = py_2[2*i+1];			\

  436. 	acc |= (r[Y] + g[Y] + b[Y])<<4;\

  437. 	dst_2[i] = acc; 

  438. 	

  439.         RGB(0);

  440. 	DST1_4(0);

  441. 	DST2_4(0);

  442. 

  443. 	RGB(1);

  444. 	DST2_4(1);

  445. 	DST1_4(1);

  446. 

  447. 	RGB(2);

  448. 	DST1_4(2);

  449. 	DST2_4(2);

  450. 

  451. 	RGB(3);

  452. 	DST2_4(3);

  453. 	DST1_4(3);

  454. EPILOG(4)

  455. 

  456. PROLOG(yuv2rgb_c_4_ordered_dither, uint8_t)

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

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

  459.         int acc;

  460. 

  461. #define DST1bpp4(i,o)					\

  462. 	Y = py_1[2*i];				\

  463. 	acc = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];	\

  464. 	Y = py_1[2*i+1];			\

  465. 	acc |= (r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]])<<4;\

  466.         dst_1[i]= acc;

  467. 

  468. #define DST2bpp4(i,o)					\

  469. 	Y = py_2[2*i];				\

  470. 	acc =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];	\

  471. 	Y = py_2[2*i+1];			\

  472. 	acc |=  (r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]])<<4;\

  473.         dst_2[i]= acc;

  474. 

  475. 

  476. 	RGB(0);

  477. 	DST1bpp4(0,0);

  478. 	DST2bpp4(0,0);

  479. 

  480. 	RGB(1);

  481. 	DST2bpp4(1,2);

  482. 	DST1bpp4(1,2);

  483. 

  484. 	RGB(2);

  485. 	DST1bpp4(2,4);

  486. 	DST2bpp4(2,4);

  487. 

  488. 	RGB(3);

  489. 	DST2bpp4(3,6);

  490. 	DST1bpp4(3,6);

  491. EPILOG(4)

  492. 

  493. // This is exactly the same code as yuv2rgb_c_32 except for the types of

  494. // r, g, b, dst_1, dst_2

  495. PROLOG(yuv2rgb_c_4b, uint8_t)

  496. 	RGB(0);

  497. 	DST1(0);

  498. 	DST2(0);

  499. 

  500. 	RGB(1);

  501. 	DST2(1);

  502. 	DST1(1);

  503. 

  504. 	RGB(2);

  505. 	DST1(2);

  506. 	DST2(2);

  507. 

  508. 	RGB(3);

  509. 	DST2(3);

  510. 	DST1(3);

  511. EPILOG(8)

  512. 

  513. PROLOG(yuv2rgb_c_4b_ordered_dither, uint8_t)

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

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

  516. 

  517. #define DST1bpp4b(i,o)					\

  518. 	Y = py_1[2*i];				\

  519. 	dst_1[2*i] = r[Y+d128[0+o]] + g[Y+d64[0+o]] + b[Y+d128[0+o]];	\

  520. 	Y = py_1[2*i+1];			\

  521. 	dst_1[2*i+1] = r[Y+d128[1+o]] + g[Y+d64[1+o]] + b[Y+d128[1+o]];

  522. 

  523. #define DST2bpp4b(i,o)					\

  524. 	Y = py_2[2*i];				\

  525. 	dst_2[2*i] =  r[Y+d128[8+o]] + g[Y+d64[8+o]] + b[Y+d128[8+o]];	\

  526. 	Y = py_2[2*i+1];			\

  527. 	dst_2[2*i+1] =  r[Y+d128[9+o]] + g[Y+d64[9+o]] + b[Y+d128[9+o]];

  528. 

  529. 

  530. 	RGB(0);

  531. 	DST1bpp4b(0,0);

  532. 	DST2bpp4b(0,0);

  533. 

  534. 	RGB(1);

  535. 	DST2bpp4b(1,2);

  536. 	DST1bpp4b(1,2);

  537. 

  538. 	RGB(2);

  539. 	DST1bpp4b(2,4);

  540. 	DST2bpp4b(2,4);

  541. 

  542. 	RGB(3);

  543. 	DST2bpp4b(3,6);

  544. 	DST1bpp4b(3,6);

  545. EPILOG(8)

  546. 

  547. PROLOG(yuv2rgb_c_1_ordered_dither, uint8_t)

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

  549. 	char out_1=0, out_2=0;

  550. 	g= c->table_gU[128] + c->table_gV[128];

  551. 

  552. #define DST1bpp1(i,o)					\

  553. 	Y = py_1[2*i];				\

  554. 	out_1+= out_1 + g[Y+d128[0+o]];	\

  555. 	Y = py_1[2*i+1];			\

  556. 	out_1+= out_1 + g[Y+d128[1+o]];

  557. 

  558. #define DST2bpp1(i,o)					\

  559. 	Y = py_2[2*i];				\

  560. 	out_2+= out_2 + g[Y+d128[8+o]];	\

  561. 	Y = py_2[2*i+1];			\

  562. 	out_2+= out_2 + g[Y+d128[9+o]];

  563. 

  564. 	DST1bpp1(0,0);

  565. 	DST2bpp1(0,0);

  566. 

  567. 	DST2bpp1(1,2);

  568. 	DST1bpp1(1,2);

  569. 

  570. 	DST1bpp1(2,4);

  571. 	DST2bpp1(2,4);

  572. 

  573. 	DST2bpp1(3,6);

  574. 	DST1bpp1(3,6);

  575. 	

  576. 	dst_1[0]= out_1;

  577. 	dst_2[0]= out_2;

  578. EPILOG(1)

  579. 

  580. SwsFunc yuv2rgb_get_func_ptr (SwsContext *c)

  581. {

  582. #if defined(HAVE_MMX2) || defined(HAVE_MMX)

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

  584. 	switch(c->dstFormat){

  585. 	case PIX_FMT_RGB32: return yuv420_rgb32_MMX2;

  586. 	case PIX_FMT_BGR24: return yuv420_rgb24_MMX2;

  587. 	case PIX_FMT_BGR565: return yuv420_rgb16_MMX2;

  588. 	case PIX_FMT_BGR555: return yuv420_rgb15_MMX2;

  589. 	}

  590.     }

  591.     if(c->flags & SWS_CPU_CAPS_MMX){

  592. 	switch(c->dstFormat){

  593. 	case PIX_FMT_RGB32: return yuv420_rgb32_MMX;

  594. 	case PIX_FMT_BGR24: return yuv420_rgb24_MMX;

  595. 	case PIX_FMT_BGR565: return yuv420_rgb16_MMX;

  596. 	case PIX_FMT_BGR555: return yuv420_rgb15_MMX;

  597. 	}

  598.     }

  599. #endif

  600. #ifdef HAVE_MLIB

  601.     {

  602. 	SwsFunc t= yuv2rgb_init_mlib(c);

  603. 	if(t) return t;

  604.     }

  605. #endif

  606. #ifdef HAVE_ALTIVEC

  607.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  608.     {

  609. 	SwsFunc t = yuv2rgb_init_altivec(c);

  610. 	if(t) return t;

  611.     }

  612. #endif

  613. 

  614.     av_log(c, AV_LOG_WARNING, "No accelerated colorspace conversion found\n");

  615. 

  616.     switch(c->dstFormat){

  617.     case PIX_FMT_BGR32:

  618.     case PIX_FMT_RGB32: return yuv2rgb_c_32;

  619.     case PIX_FMT_RGB24: return yuv2rgb_c_24_rgb;

  620.     case PIX_FMT_BGR24: return yuv2rgb_c_24_bgr;

  621.     case PIX_FMT_RGB565:

  622.     case PIX_FMT_BGR565:

  623.     case PIX_FMT_RGB555:

  624.     case PIX_FMT_BGR555: return yuv2rgb_c_16;

  625.     case PIX_FMT_RGB8:

  626.     case PIX_FMT_BGR8:  return yuv2rgb_c_8_ordered_dither;

  627.     case PIX_FMT_RGB4:

  628.     case PIX_FMT_BGR4:  return yuv2rgb_c_4_ordered_dither;

  629.     case PIX_FMT_RGB4_BYTE:

  630.     case PIX_FMT_BGR4_BYTE:  return yuv2rgb_c_4b_ordered_dither;

  631.     case PIX_FMT_MONOBLACK:  return yuv2rgb_c_1_ordered_dither;

  632.     default:

  633.     	assert(0);

  634.     }

  635.     return NULL;

  636. }

  637. 

  638. static int div_round (int dividend, int divisor)

  639. {

  640.     if (dividend > 0)

  641. 	return (dividend + (divisor>>1)) / divisor;

  642.     else

  643. 	return -((-dividend + (divisor>>1)) / divisor);

  644. }

  645. 

  646. int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation)

  647. {  

  648.     const int isRgb = isBGR(c->dstFormat);

  649.     const int bpp = fmt_depth(c->dstFormat);

  650.     int i;

  651.     uint8_t table_Y[1024];

  652.     uint32_t *table_32 = 0;

  653.     uint16_t *table_16 = 0;

  654.     uint8_t *table_8 = 0;

  655.     uint8_t *table_332 = 0;

  656.     uint8_t *table_121 = 0;

  657.     uint8_t *table_1 = 0;

  658.     int entry_size = 0;

  659.     void *table_r = 0, *table_g = 0, *table_b = 0;

  660.     void *table_start;

  661. 

  662.     int64_t crv =  inv_table[0];

  663.     int64_t cbu =  inv_table[1];

  664.     int64_t cgu = -inv_table[2];

  665.     int64_t cgv = -inv_table[3];

  666.     int64_t cy  = 1<<16;

  667.     int64_t oy  = 0;

  668. 

  669. //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);

  670.     if(!fullRange){

  671. 	cy= (cy*255) / 219;

  672. 	oy= 16<<16;

  673.     }

  674. 	

  675.     cy = (cy *contrast             )>>16;

  676.     crv= (crv*contrast * saturation)>>32;

  677.     cbu= (cbu*contrast * saturation)>>32;

  678.     cgu= (cgu*contrast * saturation)>>32;

  679.     cgv= (cgv*contrast * saturation)>>32;

  680. //printf("%lld %lld %lld %lld %lld\n", cy, crv, cbu, cgu, cgv);

  681.     oy -= 256*brightness;

  682. 

  683.     for (i = 0; i < 1024; i++) {

  684. 	int j;

  685. 

  686. 	j= (cy*(((i - 384)<<16) - oy) + (1<<31))>>32;

  687. 	j = (j < 0) ? 0 : ((j > 255) ? 255 : j);

  688. 	table_Y[i] = j;

  689.     }

  690. 

  691.     switch (bpp) {

  692.     case 32:

  693. 	table_start= table_32 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));

  694. 

  695. 	entry_size = sizeof (uint32_t);

  696. 	table_r = table_32 + 197;

  697. 	table_b = table_32 + 197 + 685;

  698. 	table_g = table_32 + 197 + 2*682;

  699. 

  700. 	for (i = -197; i < 256+197; i++)

  701. 	    ((uint32_t *)table_r)[i] = table_Y[i+384] << (isRgb ? 16 : 0);

  702. 	for (i = -132; i < 256+132; i++)

  703. 	    ((uint32_t *)table_g)[i] = table_Y[i+384] << 8;

  704. 	for (i = -232; i < 256+232; i++)

  705. 	    ((uint32_t *)table_b)[i] = table_Y[i+384] << (isRgb ? 0 : 16);

  706. 	break;

  707. 

  708.     case 24:

  709. 	table_start= table_8 = av_malloc ((256 + 2*232) * sizeof (uint8_t));

  710. 

  711. 	entry_size = sizeof (uint8_t);

  712. 	table_r = table_g = table_b = table_8 + 232;

  713. 

  714. 	for (i = -232; i < 256+232; i++)

  715. 	    ((uint8_t * )table_b)[i] = table_Y[i+384];

  716. 	break;

  717. 

  718.     case 15:

  719.     case 16:

  720. 	table_start= table_16 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));

  721. 

  722. 	entry_size = sizeof (uint16_t);

  723. 	table_r = table_16 + 197;

  724. 	table_b = table_16 + 197 + 685;

  725. 	table_g = table_16 + 197 + 2*682;

  726. 

  727. 	for (i = -197; i < 256+197; i++) {

  728. 	    int j = table_Y[i+384] >> 3;

  729. 

  730. 	    if (isRgb)

  731. 		j <<= ((bpp==16) ? 11 : 10);

  732. 

  733. 	    ((uint16_t *)table_r)[i] = j;

  734. 	}

  735. 	for (i = -132; i < 256+132; i++) {

  736. 	    int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);

  737. 

  738. 	    ((uint16_t *)table_g)[i] = j << 5;

  739. 	}

  740. 	for (i = -232; i < 256+232; i++) {

  741. 	    int j = table_Y[i+384] >> 3;

  742. 

  743. 	    if (!isRgb)

  744. 		j <<= ((bpp==16) ? 11 : 10);

  745. 

  746. 	    ((uint16_t *)table_b)[i] = j;

  747. 	}

  748. 	break;

  749. 

  750.     case 8:

  751. 	table_start= table_332 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));

  752. 

  753. 	entry_size = sizeof (uint8_t);

  754. 	table_r = table_332 + 197;

  755. 	table_b = table_332 + 197 + 685;

  756. 	table_g = table_332 + 197 + 2*682;

  757. 

  758. 	for (i = -197; i < 256+197; i++) {

  759. 	    int j = (table_Y[i+384 - 16] + 18)/36;

  760. 

  761. 	    if (isRgb)

  762. 		j <<= 5;

  763. 

  764. 	    ((uint8_t *)table_r)[i] = j;

  765. 	}

  766. 	for (i = -132; i < 256+132; i++) {

  767. 	    int j = (table_Y[i+384 - 16] + 18)/36;

  768. 

  769. 	    if (!isRgb)

  770. 		j <<= 1;

  771. 

  772. 	    ((uint8_t *)table_g)[i] = j << 2;

  773. 	}

  774. 	for (i = -232; i < 256+232; i++) {

  775. 	    int j = (table_Y[i+384 - 37] + 43)/85;

  776. 

  777. 	    if (!isRgb)

  778. 		j <<= 6;

  779. 

  780. 	    ((uint8_t *)table_b)[i] = j;

  781. 	}

  782. 	break;

  783.     case 4:

  784.     case 4|128:

  785. 	table_start= table_121 = av_malloc ((197 + 2*682 + 256 + 132) * sizeof (uint8_t));

  786. 

  787. 	entry_size = sizeof (uint8_t);

  788. 	table_r = table_121 + 197;

  789. 	table_b = table_121 + 197 + 685;

  790. 	table_g = table_121 + 197 + 2*682;

  791. 

  792. 	for (i = -197; i < 256+197; i++) {

  793. 	    int j = table_Y[i+384 - 110] >> 7;

  794. 

  795. 	    if (isRgb)

  796. 		j <<= 3;

  797. 

  798. 	    ((uint8_t *)table_r)[i] = j;

  799. 	}

  800. 	for (i = -132; i < 256+132; i++) {

  801. 	    int j = (table_Y[i+384 - 37]+ 43)/85;

  802. 

  803. 	    ((uint8_t *)table_g)[i] = j << 1;

  804. 	}

  805. 	for (i = -232; i < 256+232; i++) {

  806. 	    int j =table_Y[i+384 - 110] >> 7;

  807. 

  808. 	    if (!isRgb)

  809. 		j <<= 3;

  810. 

  811. 	    ((uint8_t *)table_b)[i] = j;

  812. 	}

  813. 	break;

  814. 

  815.     case 1:

  816. 	table_start= table_1 = av_malloc (256*2 * sizeof (uint8_t));

  817. 

  818. 	entry_size = sizeof (uint8_t);

  819. 	table_g = table_1;

  820. 	table_r = table_b = NULL;

  821. 

  822. 	for (i = 0; i < 256+256; i++) {

  823. 	    int j = table_Y[i + 384 - 110]>>7;

  824. 

  825. 	    ((uint8_t *)table_g)[i] = j;

  826. 	}

  827. 	break;

  828. 

  829.     default:

  830. 	table_start= NULL;

  831. 	av_log(c, AV_LOG_ERROR, "%ibpp not supported by yuv2rgb\n", bpp);

  832. 	//free mem?

  833. 	return -1;

  834.     }

  835. 

  836.     for (i = 0; i < 256; i++) {

  837. 	c->table_rV[i] = (uint8_t *)table_r + entry_size * div_round (crv * (i-128), 76309);

  838. 	c->table_gU[i] = (uint8_t *)table_g + entry_size * div_round (cgu * (i-128), 76309);

  839. 	c->table_gV[i] = entry_size * div_round (cgv * (i-128), 76309);

  840. 	c->table_bU[i] = (uint8_t *)table_b + entry_size * div_round (cbu * (i-128), 76309);

  841.     }

  842. 

  843.     av_free(c->yuvTable);

  844.     c->yuvTable= table_start;

  845.     return 0;

  846. }