You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

1069 lines
42KB

  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. #include <inttypes.h>
  21. #include <string.h>
  22. #include <math.h>
  23. #include <stdio.h>
  24. #include "config.h"
  25. #include <assert.h>
  26. #include "swscale.h"
  27. #include "swscale_internal.h"
  28. #include "rgb2rgb.h"
  29. #include "libavutil/intreadwrite.h"
  30. #include "libavutil/cpu.h"
  31. #include "libavutil/avutil.h"
  32. #include "libavutil/mathematics.h"
  33. #include "libavutil/bswap.h"
  34. #include "libavutil/pixdesc.h"
  35. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_1)[8][8] = {
  36. { 0, 1, 0, 1, 0, 1, 0, 1,},
  37. { 1, 0, 1, 0, 1, 0, 1, 0,},
  38. { 0, 1, 0, 1, 0, 1, 0, 1,},
  39. { 1, 0, 1, 0, 1, 0, 1, 0,},
  40. { 0, 1, 0, 1, 0, 1, 0, 1,},
  41. { 1, 0, 1, 0, 1, 0, 1, 0,},
  42. { 0, 1, 0, 1, 0, 1, 0, 1,},
  43. { 1, 0, 1, 0, 1, 0, 1, 0,},
  44. };
  45. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_3)[8][8] = {
  46. { 1, 2, 1, 2, 1, 2, 1, 2,},
  47. { 3, 0, 3, 0, 3, 0, 3, 0,},
  48. { 1, 2, 1, 2, 1, 2, 1, 2,},
  49. { 3, 0, 3, 0, 3, 0, 3, 0,},
  50. { 1, 2, 1, 2, 1, 2, 1, 2,},
  51. { 3, 0, 3, 0, 3, 0, 3, 0,},
  52. { 1, 2, 1, 2, 1, 2, 1, 2,},
  53. { 3, 0, 3, 0, 3, 0, 3, 0,},
  54. };
  55. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_64)[8][8] = {
  56. { 18, 34, 30, 46, 17, 33, 29, 45,},
  57. { 50, 2, 62, 14, 49, 1, 61, 13,},
  58. { 26, 42, 22, 38, 25, 41, 21, 37,},
  59. { 58, 10, 54, 6, 57, 9, 53, 5,},
  60. { 16, 32, 28, 44, 19, 35, 31, 47,},
  61. { 48, 0, 60, 12, 51, 3, 63, 15,},
  62. { 24, 40, 20, 36, 27, 43, 23, 39,},
  63. { 56, 8, 52, 4, 59, 11, 55, 7,},
  64. };
  65. extern const uint8_t dither_8x8_128[8][8];
  66. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_256)[8][8] = {
  67. { 72, 136, 120, 184, 68, 132, 116, 180,},
  68. { 200, 8, 248, 56, 196, 4, 244, 52,},
  69. { 104, 168, 88, 152, 100, 164, 84, 148,},
  70. { 232, 40, 216, 24, 228, 36, 212, 20,},
  71. { 64, 128, 102, 176, 76, 140, 124, 188,},
  72. { 192, 0, 240, 48, 204, 12, 252, 60,},
  73. { 96, 160, 80, 144, 108, 172, 92, 156,},
  74. { 224, 32, 208, 16, 236, 44, 220, 28,},
  75. };
  76. #define RGB2YUV_SHIFT 15
  77. #define BY ( (int) (0.114 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  78. #define BV (-(int) (0.081 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  79. #define BU ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  80. #define GY ( (int) (0.587 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  81. #define GV (-(int) (0.419 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  82. #define GU (-(int) (0.331 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  83. #define RY ( (int) (0.299 * 219 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  84. #define RV ( (int) (0.500 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  85. #define RU (-(int) (0.169 * 224 / 255 * (1 << RGB2YUV_SHIFT) + 0.5))
  86. static void fillPlane(uint8_t *plane, int stride, int width, int height, int y,
  87. uint8_t val)
  88. {
  89. int i;
  90. uint8_t *ptr = plane + stride * y;
  91. for (i = 0; i < height; i++) {
  92. memset(ptr, val, width);
  93. ptr += stride;
  94. }
  95. }
  96. static void copyPlane(const uint8_t *src, int srcStride,
  97. int srcSliceY, int srcSliceH, int width,
  98. uint8_t *dst, int dstStride)
  99. {
  100. dst += dstStride * srcSliceY;
  101. if (dstStride == srcStride && srcStride > 0) {
  102. memcpy(dst, src, srcSliceH * dstStride);
  103. } else {
  104. int i;
  105. for (i = 0; i < srcSliceH; i++) {
  106. memcpy(dst, src, width);
  107. src += srcStride;
  108. dst += dstStride;
  109. }
  110. }
  111. }
  112. static int planarToNv12Wrapper(SwsContext *c, const uint8_t *src[],
  113. int srcStride[], int srcSliceY,
  114. int srcSliceH, uint8_t *dstParam[],
  115. int dstStride[])
  116. {
  117. uint8_t *dst = dstParam[1] + dstStride[1] * srcSliceY / 2;
  118. copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
  119. dstParam[0], dstStride[0]);
  120. if (c->dstFormat == PIX_FMT_NV12)
  121. interleaveBytes(src[1], src[2], dst, c->srcW / 2, srcSliceH / 2,
  122. srcStride[1], srcStride[2], dstStride[0]);
  123. else
  124. interleaveBytes(src[2], src[1], dst, c->srcW / 2, srcSliceH / 2,
  125. srcStride[2], srcStride[1], dstStride[0]);
  126. return srcSliceH;
  127. }
  128. static int planarToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
  129. int srcStride[], int srcSliceY, int srcSliceH,
  130. uint8_t *dstParam[], int dstStride[])
  131. {
  132. uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
  133. yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
  134. srcStride[1], dstStride[0]);
  135. return srcSliceH;
  136. }
  137. static int planarToUyvyWrapper(SwsContext *c, const uint8_t *src[],
  138. int srcStride[], int srcSliceY, int srcSliceH,
  139. uint8_t *dstParam[], int dstStride[])
  140. {
  141. uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
  142. yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
  143. srcStride[1], dstStride[0]);
  144. return srcSliceH;
  145. }
  146. static int yuv422pToYuy2Wrapper(SwsContext *c, const uint8_t *src[],
  147. int srcStride[], int srcSliceY, int srcSliceH,
  148. uint8_t *dstParam[], int dstStride[])
  149. {
  150. uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
  151. yuv422ptoyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
  152. srcStride[1], dstStride[0]);
  153. return srcSliceH;
  154. }
  155. static int yuv422pToUyvyWrapper(SwsContext *c, const uint8_t *src[],
  156. int srcStride[], int srcSliceY, int srcSliceH,
  157. uint8_t *dstParam[], int dstStride[])
  158. {
  159. uint8_t *dst = dstParam[0] + dstStride[0] * srcSliceY;
  160. yuv422ptouyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0],
  161. srcStride[1], dstStride[0]);
  162. return srcSliceH;
  163. }
  164. static int yuyvToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
  165. int srcStride[], int srcSliceY, int srcSliceH,
  166. uint8_t *dstParam[], int dstStride[])
  167. {
  168. uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
  169. uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
  170. uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
  171. yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
  172. dstStride[1], srcStride[0]);
  173. if (dstParam[3])
  174. fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
  175. return srcSliceH;
  176. }
  177. static int yuyvToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
  178. int srcStride[], int srcSliceY, int srcSliceH,
  179. uint8_t *dstParam[], int dstStride[])
  180. {
  181. uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
  182. uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
  183. uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
  184. yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
  185. dstStride[1], srcStride[0]);
  186. return srcSliceH;
  187. }
  188. static int uyvyToYuv420Wrapper(SwsContext *c, const uint8_t *src[],
  189. int srcStride[], int srcSliceY, int srcSliceH,
  190. uint8_t *dstParam[], int dstStride[])
  191. {
  192. uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
  193. uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY / 2;
  194. uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY / 2;
  195. uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
  196. dstStride[1], srcStride[0]);
  197. if (dstParam[3])
  198. fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
  199. return srcSliceH;
  200. }
  201. static int uyvyToYuv422Wrapper(SwsContext *c, const uint8_t *src[],
  202. int srcStride[], int srcSliceY, int srcSliceH,
  203. uint8_t *dstParam[], int dstStride[])
  204. {
  205. uint8_t *ydst = dstParam[0] + dstStride[0] * srcSliceY;
  206. uint8_t *udst = dstParam[1] + dstStride[1] * srcSliceY;
  207. uint8_t *vdst = dstParam[2] + dstStride[2] * srcSliceY;
  208. uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0],
  209. dstStride[1], srcStride[0]);
  210. return srcSliceH;
  211. }
  212. static void gray8aToPacked32(const uint8_t *src, uint8_t *dst, int num_pixels,
  213. const uint8_t *palette)
  214. {
  215. int i;
  216. for (i = 0; i < num_pixels; i++)
  217. ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | (src[(i << 1) + 1] << 24);
  218. }
  219. static void gray8aToPacked32_1(const uint8_t *src, uint8_t *dst, int num_pixels,
  220. const uint8_t *palette)
  221. {
  222. int i;
  223. for (i = 0; i < num_pixels; i++)
  224. ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i << 1]] | src[(i << 1) + 1];
  225. }
  226. static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels,
  227. const uint8_t *palette)
  228. {
  229. int i;
  230. for (i = 0; i < num_pixels; i++) {
  231. //FIXME slow?
  232. dst[0] = palette[src[i << 1] * 4 + 0];
  233. dst[1] = palette[src[i << 1] * 4 + 1];
  234. dst[2] = palette[src[i << 1] * 4 + 2];
  235. dst += 3;
  236. }
  237. }
  238. static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
  239. int srcStride[], int srcSliceY, int srcSliceH,
  240. uint8_t *dst[], int dstStride[])
  241. {
  242. int i, j;
  243. int srcstr = srcStride[0] >> 1;
  244. int dststr = dstStride[0] >> 1;
  245. uint16_t *dstPtr = (uint16_t *) dst[0];
  246. const uint16_t *srcPtr = (const uint16_t *) src[0];
  247. int min_stride = FFMIN(srcstr, dststr);
  248. for (i = 0; i < srcSliceH; i++) {
  249. for (j = 0; j < min_stride; j++) {
  250. dstPtr[j] = av_bswap16(srcPtr[j]);
  251. }
  252. srcPtr += srcstr;
  253. dstPtr += dststr;
  254. }
  255. return srcSliceH;
  256. }
  257. static int palToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
  258. int srcSliceY, int srcSliceH, uint8_t *dst[],
  259. int dstStride[])
  260. {
  261. const enum PixelFormat srcFormat = c->srcFormat;
  262. const enum PixelFormat dstFormat = c->dstFormat;
  263. void (*conv)(const uint8_t *src, uint8_t *dst, int num_pixels,
  264. const uint8_t *palette) = NULL;
  265. int i;
  266. uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
  267. const uint8_t *srcPtr = src[0];
  268. if (srcFormat == PIX_FMT_Y400A) {
  269. switch (dstFormat) {
  270. case PIX_FMT_RGB32 : conv = gray8aToPacked32; break;
  271. case PIX_FMT_BGR32 : conv = gray8aToPacked32; break;
  272. case PIX_FMT_BGR32_1: conv = gray8aToPacked32_1; break;
  273. case PIX_FMT_RGB32_1: conv = gray8aToPacked32_1; break;
  274. case PIX_FMT_RGB24 : conv = gray8aToPacked24; break;
  275. case PIX_FMT_BGR24 : conv = gray8aToPacked24; break;
  276. }
  277. } else if (usePal(srcFormat)) {
  278. switch (dstFormat) {
  279. case PIX_FMT_RGB32 : conv = sws_convertPalette8ToPacked32; break;
  280. case PIX_FMT_BGR32 : conv = sws_convertPalette8ToPacked32; break;
  281. case PIX_FMT_BGR32_1: conv = sws_convertPalette8ToPacked32; break;
  282. case PIX_FMT_RGB32_1: conv = sws_convertPalette8ToPacked32; break;
  283. case PIX_FMT_RGB24 : conv = sws_convertPalette8ToPacked24; break;
  284. case PIX_FMT_BGR24 : conv = sws_convertPalette8ToPacked24; break;
  285. }
  286. }
  287. if (!conv)
  288. av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
  289. sws_format_name(srcFormat), sws_format_name(dstFormat));
  290. else {
  291. for (i = 0; i < srcSliceH; i++) {
  292. conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);
  293. srcPtr += srcStride[0];
  294. dstPtr += dstStride[0];
  295. }
  296. }
  297. return srcSliceH;
  298. }
  299. #define isRGBA32(x) ( \
  300. (x) == PIX_FMT_ARGB \
  301. || (x) == PIX_FMT_RGBA \
  302. || (x) == PIX_FMT_BGRA \
  303. || (x) == PIX_FMT_ABGR \
  304. )
  305. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
  306. typedef void (* rgbConvFn) (const uint8_t *, uint8_t *, int);
  307. static rgbConvFn findRgbConvFn(SwsContext *c)
  308. {
  309. const enum PixelFormat srcFormat = c->srcFormat;
  310. const enum PixelFormat dstFormat = c->dstFormat;
  311. const int srcId = c->srcFormatBpp;
  312. const int dstId = c->dstFormatBpp;
  313. rgbConvFn conv = NULL;
  314. #define IS_NOT_NE(bpp, fmt) \
  315. (((bpp + 7) >> 3) == 2 && \
  316. (!(av_pix_fmt_descriptors[fmt].flags & PIX_FMT_BE) != !HAVE_BIGENDIAN))
  317. /* if this is non-native rgb444/555/565, don't handle it here. */
  318. if (IS_NOT_NE(srcId, srcFormat) || IS_NOT_NE(dstId, dstFormat))
  319. return NULL;
  320. #define CONV_IS(src, dst) (srcFormat == PIX_FMT_##src && dstFormat == PIX_FMT_##dst)
  321. if (isRGBA32(srcFormat) && isRGBA32(dstFormat)) {
  322. if ( CONV_IS(ABGR, RGBA)
  323. || CONV_IS(ARGB, BGRA)
  324. || CONV_IS(BGRA, ARGB)
  325. || CONV_IS(RGBA, ABGR)) conv = shuffle_bytes_3210;
  326. else if (CONV_IS(ABGR, ARGB)
  327. || CONV_IS(ARGB, ABGR)) conv = shuffle_bytes_0321;
  328. else if (CONV_IS(ABGR, BGRA)
  329. || CONV_IS(ARGB, RGBA)) conv = shuffle_bytes_1230;
  330. else if (CONV_IS(BGRA, RGBA)
  331. || CONV_IS(RGBA, BGRA)) conv = shuffle_bytes_2103;
  332. else if (CONV_IS(BGRA, ABGR)
  333. || CONV_IS(RGBA, ARGB)) conv = shuffle_bytes_3012;
  334. } else
  335. /* BGR -> BGR */
  336. if ((isBGRinInt(srcFormat) && isBGRinInt(dstFormat)) ||
  337. (isRGBinInt(srcFormat) && isRGBinInt(dstFormat))) {
  338. switch (srcId | (dstId << 16)) {
  339. case 0x000F000C: conv = rgb12to15; break;
  340. case 0x000F0010: conv = rgb16to15; break;
  341. case 0x000F0018: conv = rgb24to15; break;
  342. case 0x000F0020: conv = rgb32to15; break;
  343. case 0x0010000F: conv = rgb15to16; break;
  344. case 0x00100018: conv = rgb24to16; break;
  345. case 0x00100020: conv = rgb32to16; break;
  346. case 0x0018000F: conv = rgb15to24; break;
  347. case 0x00180010: conv = rgb16to24; break;
  348. case 0x00180020: conv = rgb32to24; break;
  349. case 0x0020000F: conv = rgb15to32; break;
  350. case 0x00200010: conv = rgb16to32; break;
  351. case 0x00200018: conv = rgb24to32; break;
  352. }
  353. } else if ((isBGRinInt(srcFormat) && isRGBinInt(dstFormat)) ||
  354. (isRGBinInt(srcFormat) && isBGRinInt(dstFormat))) {
  355. switch (srcId | (dstId << 16)) {
  356. case 0x000C000C: conv = rgb12tobgr12; break;
  357. case 0x000F000F: conv = rgb15tobgr15; break;
  358. case 0x000F0010: conv = rgb16tobgr15; break;
  359. case 0x000F0018: conv = rgb24tobgr15; break;
  360. case 0x000F0020: conv = rgb32tobgr15; break;
  361. case 0x0010000F: conv = rgb15tobgr16; break;
  362. case 0x00100010: conv = rgb16tobgr16; break;
  363. case 0x00100018: conv = rgb24tobgr16; break;
  364. case 0x00100020: conv = rgb32tobgr16; break;
  365. case 0x0018000F: conv = rgb15tobgr24; break;
  366. case 0x00180010: conv = rgb16tobgr24; break;
  367. case 0x00180018: conv = rgb24tobgr24; break;
  368. case 0x00180020: conv = rgb32tobgr24; break;
  369. case 0x0020000F: conv = rgb15tobgr32; break;
  370. case 0x00200010: conv = rgb16tobgr32; break;
  371. case 0x00200018: conv = rgb24tobgr32; break;
  372. }
  373. }
  374. return conv;
  375. }
  376. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
  377. static int rgbToRgbWrapper(SwsContext *c, const uint8_t *src[], int srcStride[],
  378. int srcSliceY, int srcSliceH, uint8_t *dst[],
  379. int dstStride[])
  380. {
  381. const enum PixelFormat srcFormat = c->srcFormat;
  382. const enum PixelFormat dstFormat = c->dstFormat;
  383. const int srcBpp = (c->srcFormatBpp + 7) >> 3;
  384. const int dstBpp = (c->dstFormatBpp + 7) >> 3;
  385. rgbConvFn conv = findRgbConvFn(c);
  386. if (!conv) {
  387. av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",
  388. sws_format_name(srcFormat), sws_format_name(dstFormat));
  389. } else {
  390. const uint8_t *srcPtr = src[0];
  391. uint8_t *dstPtr = dst[0];
  392. if ((srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1) &&
  393. !isRGBA32(dstFormat))
  394. srcPtr += ALT32_CORR;
  395. if ((dstFormat == PIX_FMT_RGB32_1 || dstFormat == PIX_FMT_BGR32_1) &&
  396. !isRGBA32(srcFormat))
  397. dstPtr += ALT32_CORR;
  398. if (dstStride[0] * srcBpp == srcStride[0] * dstBpp && srcStride[0] > 0 &&
  399. !(srcStride[0] % srcBpp))
  400. conv(srcPtr, dstPtr + dstStride[0] * srcSliceY,
  401. srcSliceH * srcStride[0]);
  402. else {
  403. int i;
  404. dstPtr += dstStride[0] * srcSliceY;
  405. for (i = 0; i < srcSliceH; i++) {
  406. conv(srcPtr, dstPtr, c->srcW * srcBpp);
  407. srcPtr += srcStride[0];
  408. dstPtr += dstStride[0];
  409. }
  410. }
  411. }
  412. return srcSliceH;
  413. }
  414. static int bgr24ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
  415. int srcStride[], int srcSliceY, int srcSliceH,
  416. uint8_t *dst[], int dstStride[])
  417. {
  418. rgb24toyv12(
  419. src[0],
  420. dst[0] + srcSliceY * dstStride[0],
  421. dst[1] + (srcSliceY >> 1) * dstStride[1],
  422. dst[2] + (srcSliceY >> 1) * dstStride[2],
  423. c->srcW, srcSliceH,
  424. dstStride[0], dstStride[1], srcStride[0]);
  425. if (dst[3])
  426. fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
  427. return srcSliceH;
  428. }
  429. static int yvu9ToYv12Wrapper(SwsContext *c, const uint8_t *src[],
  430. int srcStride[], int srcSliceY, int srcSliceH,
  431. uint8_t *dst[], int dstStride[])
  432. {
  433. copyPlane(src[0], srcStride[0], srcSliceY, srcSliceH, c->srcW,
  434. dst[0], dstStride[0]);
  435. planar2x(src[1], dst[1] + dstStride[1] * (srcSliceY >> 1), c->chrSrcW,
  436. srcSliceH >> 2, srcStride[1], dstStride[1]);
  437. planar2x(src[2], dst[2] + dstStride[2] * (srcSliceY >> 1), c->chrSrcW,
  438. srcSliceH >> 2, srcStride[2], dstStride[2]);
  439. if (dst[3])
  440. fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);
  441. return srcSliceH;
  442. }
  443. /* unscaled copy like stuff (assumes nearly identical formats) */
  444. static int packedCopyWrapper(SwsContext *c, const uint8_t *src[],
  445. int srcStride[], int srcSliceY, int srcSliceH,
  446. uint8_t *dst[], int dstStride[])
  447. {
  448. if (dstStride[0] == srcStride[0] && srcStride[0] > 0)
  449. memcpy(dst[0] + dstStride[0] * srcSliceY, src[0], srcSliceH * dstStride[0]);
  450. else {
  451. int i;
  452. const uint8_t *srcPtr = src[0];
  453. uint8_t *dstPtr = dst[0] + dstStride[0] * srcSliceY;
  454. int length = 0;
  455. /* universal length finder */
  456. while (length + c->srcW <= FFABS(dstStride[0]) &&
  457. length + c->srcW <= FFABS(srcStride[0]))
  458. length += c->srcW;
  459. assert(length != 0);
  460. for (i = 0; i < srcSliceH; i++) {
  461. memcpy(dstPtr, srcPtr, length);
  462. srcPtr += srcStride[0];
  463. dstPtr += dstStride[0];
  464. }
  465. }
  466. return srcSliceH;
  467. }
  468. #define clip9(x) av_clip_uintp2(x, 9)
  469. #define clip10(x) av_clip_uintp2(x, 10)
  470. #define DITHER_COPY(dst, dstStride, wfunc, src, srcStride, rfunc, dithers, shift, clip) \
  471. for (i = 0; i < height; i++) { \
  472. const uint8_t *dither = dithers[i & 7]; \
  473. for (j = 0; j < length - 7; j += 8) { \
  474. wfunc(&dst[j + 0], clip((rfunc(&src[j + 0]) + dither[0]) >> shift)); \
  475. wfunc(&dst[j + 1], clip((rfunc(&src[j + 1]) + dither[1]) >> shift)); \
  476. wfunc(&dst[j + 2], clip((rfunc(&src[j + 2]) + dither[2]) >> shift)); \
  477. wfunc(&dst[j + 3], clip((rfunc(&src[j + 3]) + dither[3]) >> shift)); \
  478. wfunc(&dst[j + 4], clip((rfunc(&src[j + 4]) + dither[4]) >> shift)); \
  479. wfunc(&dst[j + 5], clip((rfunc(&src[j + 5]) + dither[5]) >> shift)); \
  480. wfunc(&dst[j + 6], clip((rfunc(&src[j + 6]) + dither[6]) >> shift)); \
  481. wfunc(&dst[j + 7], clip((rfunc(&src[j + 7]) + dither[7]) >> shift)); \
  482. } \
  483. for (; j < length; j++) \
  484. wfunc(&dst[j], (rfunc(&src[j]) + dither[j & 7]) >> shift); \
  485. dst += dstStride; \
  486. src += srcStride; \
  487. }
  488. static int planarCopyWrapper(SwsContext *c, const uint8_t *src[],
  489. int srcStride[], int srcSliceY, int srcSliceH,
  490. uint8_t *dst[], int dstStride[])
  491. {
  492. int plane, i, j;
  493. for (plane = 0; plane < 4; plane++) {
  494. int length = (plane == 0 || plane == 3) ? c->srcW : -((-c->srcW ) >> c->chrDstHSubSample);
  495. int y = (plane == 0 || plane == 3) ? srcSliceY: -((-srcSliceY) >> c->chrDstVSubSample);
  496. int height = (plane == 0 || plane == 3) ? srcSliceH: -((-srcSliceH) >> c->chrDstVSubSample);
  497. const uint8_t *srcPtr = src[plane];
  498. uint8_t *dstPtr = dst[plane] + dstStride[plane] * y;
  499. if (!dst[plane])
  500. continue;
  501. // ignore palette for GRAY8
  502. if (plane == 1 && !dst[2]) continue;
  503. if (!src[plane] || (plane == 1 && !src[2])) {
  504. if (is16BPS(c->dstFormat))
  505. length *= 2;
  506. fillPlane(dst[plane], dstStride[plane], length, height, y,
  507. (plane == 3) ? 255 : 128);
  508. } else {
  509. if (is9_OR_10BPS(c->srcFormat)) {
  510. const int src_depth = av_pix_fmt_descriptors[c->srcFormat].comp[plane].depth_minus1 + 1;
  511. const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
  512. const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
  513. if (is16BPS(c->dstFormat)) {
  514. uint16_t *dstPtr2 = (uint16_t *) dstPtr;
  515. #define COPY9_OR_10TO16(rfunc, wfunc) \
  516. for (i = 0; i < height; i++) { \
  517. for (j = 0; j < length; j++) { \
  518. int srcpx = rfunc(&srcPtr2[j]); \
  519. wfunc(&dstPtr2[j], (srcpx << (16 - src_depth)) | (srcpx >> (2 * src_depth - 16))); \
  520. } \
  521. dstPtr2 += dstStride[plane] / 2; \
  522. srcPtr2 += srcStride[plane] / 2; \
  523. }
  524. if (isBE(c->dstFormat)) {
  525. if (isBE(c->srcFormat)) {
  526. COPY9_OR_10TO16(AV_RB16, AV_WB16);
  527. } else {
  528. COPY9_OR_10TO16(AV_RL16, AV_WB16);
  529. }
  530. } else {
  531. if (isBE(c->srcFormat)) {
  532. COPY9_OR_10TO16(AV_RB16, AV_WL16);
  533. } else {
  534. COPY9_OR_10TO16(AV_RL16, AV_WL16);
  535. }
  536. }
  537. } else if (is9_OR_10BPS(c->dstFormat)) {
  538. uint16_t *dstPtr2 = (uint16_t *) dstPtr;
  539. #define COPY9_OR_10TO9_OR_10(loop) \
  540. for (i = 0; i < height; i++) { \
  541. for (j = 0; j < length; j++) { \
  542. loop; \
  543. } \
  544. dstPtr2 += dstStride[plane] / 2; \
  545. srcPtr2 += srcStride[plane] / 2; \
  546. }
  547. #define COPY9_OR_10TO9_OR_10_2(rfunc, wfunc) \
  548. if (dst_depth > src_depth) { \
  549. COPY9_OR_10TO9_OR_10(int srcpx = rfunc(&srcPtr2[j]); \
  550. wfunc(&dstPtr2[j], (srcpx << 1) | (srcpx >> 9))); \
  551. } else if (dst_depth < src_depth) { \
  552. DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
  553. srcPtr2, srcStride[plane] / 2, rfunc, \
  554. dither_8x8_1, 1, clip9); \
  555. } else { \
  556. COPY9_OR_10TO9_OR_10(wfunc(&dstPtr2[j], rfunc(&srcPtr2[j]))); \
  557. }
  558. if (isBE(c->dstFormat)) {
  559. if (isBE(c->srcFormat)) {
  560. COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WB16);
  561. } else {
  562. COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WB16);
  563. }
  564. } else {
  565. if (isBE(c->srcFormat)) {
  566. COPY9_OR_10TO9_OR_10_2(AV_RB16, AV_WL16);
  567. } else {
  568. COPY9_OR_10TO9_OR_10_2(AV_RL16, AV_WL16);
  569. }
  570. }
  571. } else {
  572. #define W8(a, b) { *(a) = (b); }
  573. #define COPY9_OR_10TO8(rfunc) \
  574. if (src_depth == 9) { \
  575. DITHER_COPY(dstPtr, dstStride[plane], W8, \
  576. srcPtr2, srcStride[plane] / 2, rfunc, \
  577. dither_8x8_1, 1, av_clip_uint8); \
  578. } else { \
  579. DITHER_COPY(dstPtr, dstStride[plane], W8, \
  580. srcPtr2, srcStride[plane] / 2, rfunc, \
  581. dither_8x8_3, 2, av_clip_uint8); \
  582. }
  583. if (isBE(c->srcFormat)) {
  584. COPY9_OR_10TO8(AV_RB16);
  585. } else {
  586. COPY9_OR_10TO8(AV_RL16);
  587. }
  588. }
  589. } else if (is9_OR_10BPS(c->dstFormat)) {
  590. const int dst_depth = av_pix_fmt_descriptors[c->dstFormat].comp[plane].depth_minus1 + 1;
  591. uint16_t *dstPtr2 = (uint16_t *) dstPtr;
  592. if (is16BPS(c->srcFormat)) {
  593. const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
  594. #define COPY16TO9_OR_10(rfunc, wfunc) \
  595. if (dst_depth == 9) { \
  596. DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
  597. srcPtr2, srcStride[plane] / 2, rfunc, \
  598. dither_8x8_128, 7, clip9); \
  599. } else { \
  600. DITHER_COPY(dstPtr2, dstStride[plane] / 2, wfunc, \
  601. srcPtr2, srcStride[plane] / 2, rfunc, \
  602. dither_8x8_64, 6, clip10); \
  603. }
  604. if (isBE(c->dstFormat)) {
  605. if (isBE(c->srcFormat)) {
  606. COPY16TO9_OR_10(AV_RB16, AV_WB16);
  607. } else {
  608. COPY16TO9_OR_10(AV_RL16, AV_WB16);
  609. }
  610. } else {
  611. if (isBE(c->srcFormat)) {
  612. COPY16TO9_OR_10(AV_RB16, AV_WL16);
  613. } else {
  614. COPY16TO9_OR_10(AV_RL16, AV_WL16);
  615. }
  616. }
  617. } else /* 8bit */ {
  618. #define COPY8TO9_OR_10(wfunc) \
  619. for (i = 0; i < height; i++) { \
  620. for (j = 0; j < length; j++) { \
  621. const int srcpx = srcPtr[j]; \
  622. wfunc(&dstPtr2[j], (srcpx << (dst_depth - 8)) | (srcpx >> (16 - dst_depth))); \
  623. } \
  624. dstPtr2 += dstStride[plane] / 2; \
  625. srcPtr += srcStride[plane]; \
  626. }
  627. if (isBE(c->dstFormat)) {
  628. COPY8TO9_OR_10(AV_WB16);
  629. } else {
  630. COPY8TO9_OR_10(AV_WL16);
  631. }
  632. }
  633. } else if (is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {
  634. const uint16_t *srcPtr2 = (const uint16_t *) srcPtr;
  635. #define COPY16TO8(rfunc) \
  636. DITHER_COPY(dstPtr, dstStride[plane], W8, \
  637. srcPtr2, srcStride[plane] / 2, rfunc, \
  638. dither_8x8_256, 8, av_clip_uint8);
  639. if (isBE(c->srcFormat)) {
  640. COPY16TO8(AV_RB16);
  641. } else {
  642. COPY16TO8(AV_RL16);
  643. }
  644. } else if (!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {
  645. for (i = 0; i < height; i++) {
  646. for (j = 0; j < length; j++) {
  647. dstPtr[ j << 1 ] = srcPtr[j];
  648. dstPtr[(j << 1) + 1] = srcPtr[j];
  649. }
  650. srcPtr += srcStride[plane];
  651. dstPtr += dstStride[plane];
  652. }
  653. } else if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat) &&
  654. isBE(c->srcFormat) != isBE(c->dstFormat)) {
  655. for (i = 0; i < height; i++) {
  656. for (j = 0; j < length; j++)
  657. ((uint16_t *) dstPtr)[j] = av_bswap16(((const uint16_t *) srcPtr)[j]);
  658. srcPtr += srcStride[plane];
  659. dstPtr += dstStride[plane];
  660. }
  661. } else if (dstStride[plane] == srcStride[plane] &&
  662. srcStride[plane] > 0 && srcStride[plane] == length) {
  663. memcpy(dst[plane] + dstStride[plane] * y, src[plane],
  664. height * dstStride[plane]);
  665. } else {
  666. if (is16BPS(c->srcFormat) && is16BPS(c->dstFormat))
  667. length *= 2;
  668. else if (!av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1)
  669. length >>= 3; // monowhite/black
  670. for (i = 0; i < height; i++) {
  671. memcpy(dstPtr, srcPtr, length);
  672. srcPtr += srcStride[plane];
  673. dstPtr += dstStride[plane];
  674. }
  675. }
  676. }
  677. }
  678. return srcSliceH;
  679. }
  680. #define IS_DIFFERENT_ENDIANESS(src_fmt, dst_fmt, pix_fmt) \
  681. ((src_fmt == pix_fmt ## BE && dst_fmt == pix_fmt ## LE) || \
  682. (src_fmt == pix_fmt ## LE && dst_fmt == pix_fmt ## BE))
  683. void ff_get_unscaled_swscale(SwsContext *c)
  684. {
  685. const enum PixelFormat srcFormat = c->srcFormat;
  686. const enum PixelFormat dstFormat = c->dstFormat;
  687. const int flags = c->flags;
  688. const int dstH = c->dstH;
  689. int needsDither;
  690. needsDither = isAnyRGB(dstFormat) &&
  691. c->dstFormatBpp < 24 &&
  692. (c->dstFormatBpp < c->srcFormatBpp || (!isAnyRGB(srcFormat)));
  693. /* yv12_to_nv12 */
  694. if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) &&
  695. (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {
  696. c->swScale = planarToNv12Wrapper;
  697. }
  698. /* yuv2bgr */
  699. if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUV422P ||
  700. srcFormat == PIX_FMT_YUVA420P) && isAnyRGB(dstFormat) &&
  701. !(flags & SWS_ACCURATE_RND) && !(dstH & 1)) {
  702. c->swScale = ff_yuv2rgb_get_func_ptr(c);
  703. }
  704. if (srcFormat == PIX_FMT_YUV410P &&
  705. (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
  706. !(flags & SWS_BITEXACT)) {
  707. c->swScale = yvu9ToYv12Wrapper;
  708. }
  709. /* bgr24toYV12 */
  710. if (srcFormat == PIX_FMT_BGR24 &&
  711. (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P) &&
  712. !(flags & SWS_ACCURATE_RND))
  713. c->swScale = bgr24ToYv12Wrapper;
  714. /* RGB/BGR -> RGB/BGR (no dither needed forms) */
  715. if (isAnyRGB(srcFormat) && isAnyRGB(dstFormat) && findRgbConvFn(c)
  716. && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
  717. c->swScale= rgbToRgbWrapper;
  718. /* bswap 16 bits per pixel/component packed formats */
  719. if (IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR444) ||
  720. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR48) ||
  721. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR555) ||
  722. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_BGR565) ||
  723. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_GRAY16) ||
  724. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB444) ||
  725. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB48) ||
  726. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB555) ||
  727. IS_DIFFERENT_ENDIANESS(srcFormat, dstFormat, PIX_FMT_RGB565))
  728. c->swScale = packed_16bpc_bswap;
  729. if ((usePal(srcFormat) && (
  730. dstFormat == PIX_FMT_RGB32 ||
  731. dstFormat == PIX_FMT_RGB32_1 ||
  732. dstFormat == PIX_FMT_RGB24 ||
  733. dstFormat == PIX_FMT_BGR32 ||
  734. dstFormat == PIX_FMT_BGR32_1 ||
  735. dstFormat == PIX_FMT_BGR24)))
  736. c->swScale = palToRgbWrapper;
  737. if (srcFormat == PIX_FMT_YUV422P) {
  738. if (dstFormat == PIX_FMT_YUYV422)
  739. c->swScale = yuv422pToYuy2Wrapper;
  740. else if (dstFormat == PIX_FMT_UYVY422)
  741. c->swScale = yuv422pToUyvyWrapper;
  742. }
  743. /* LQ converters if -sws 0 or -sws 4*/
  744. if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {
  745. /* yv12_to_yuy2 */
  746. if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {
  747. if (dstFormat == PIX_FMT_YUYV422)
  748. c->swScale = planarToYuy2Wrapper;
  749. else if (dstFormat == PIX_FMT_UYVY422)
  750. c->swScale = planarToUyvyWrapper;
  751. }
  752. }
  753. if (srcFormat == PIX_FMT_YUYV422 &&
  754. (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
  755. c->swScale = yuyvToYuv420Wrapper;
  756. if (srcFormat == PIX_FMT_UYVY422 &&
  757. (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))
  758. c->swScale = uyvyToYuv420Wrapper;
  759. if (srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)
  760. c->swScale = yuyvToYuv422Wrapper;
  761. if (srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)
  762. c->swScale = uyvyToYuv422Wrapper;
  763. /* simple copy */
  764. if ( srcFormat == dstFormat ||
  765. (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P) ||
  766. (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P) ||
  767. (isPlanarYUV(srcFormat) && isGray(dstFormat)) ||
  768. (isPlanarYUV(dstFormat) && isGray(srcFormat)) ||
  769. (isGray(dstFormat) && isGray(srcFormat)) ||
  770. (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat) &&
  771. c->chrDstHSubSample == c->chrSrcHSubSample &&
  772. c->chrDstVSubSample == c->chrSrcVSubSample &&
  773. dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
  774. srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))
  775. {
  776. if (isPacked(c->srcFormat))
  777. c->swScale = packedCopyWrapper;
  778. else /* Planar YUV or gray */
  779. c->swScale = planarCopyWrapper;
  780. }
  781. if (ARCH_BFIN)
  782. ff_bfin_get_unscaled_swscale(c);
  783. if (HAVE_ALTIVEC)
  784. ff_swscale_get_unscaled_altivec(c);
  785. }
  786. static void reset_ptr(const uint8_t *src[], int format)
  787. {
  788. if (!isALPHA(format))
  789. src[3] = NULL;
  790. if (!isPlanar(format)) {
  791. src[3] = src[2] = NULL;
  792. if (!usePal(format))
  793. src[1] = NULL;
  794. }
  795. }
  796. static int check_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt,
  797. const int linesizes[4])
  798. {
  799. const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
  800. int i;
  801. for (i = 0; i < 4; i++) {
  802. int plane = desc->comp[i].plane;
  803. if (!data[plane] || !linesizes[plane])
  804. return 0;
  805. }
  806. return 1;
  807. }
  808. /**
  809. * swscale wrapper, so we don't need to export the SwsContext.
  810. * Assumes planar YUV to be in YUV order instead of YVU.
  811. */
  812. int attribute_align_arg sws_scale(struct SwsContext *c,
  813. const uint8_t * const srcSlice[],
  814. const int srcStride[], int srcSliceY,
  815. int srcSliceH, uint8_t *const dst[],
  816. const int dstStride[])
  817. {
  818. int i;
  819. const uint8_t *src2[4] = { srcSlice[0], srcSlice[1], srcSlice[2], srcSlice[3] };
  820. uint8_t *dst2[4] = { dst[0], dst[1], dst[2], dst[3] };
  821. // do not mess up sliceDir if we have a "trailing" 0-size slice
  822. if (srcSliceH == 0)
  823. return 0;
  824. if (!check_image_pointers(srcSlice, c->srcFormat, srcStride)) {
  825. av_log(c, AV_LOG_ERROR, "bad src image pointers\n");
  826. return 0;
  827. }
  828. if (!check_image_pointers(dst, c->dstFormat, dstStride)) {
  829. av_log(c, AV_LOG_ERROR, "bad dst image pointers\n");
  830. return 0;
  831. }
  832. if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {
  833. av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");
  834. return 0;
  835. }
  836. if (c->sliceDir == 0) {
  837. if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;
  838. }
  839. if (usePal(c->srcFormat)) {
  840. for (i = 0; i < 256; i++) {
  841. int p, r, g, b, y, u, v;
  842. if (c->srcFormat == PIX_FMT_PAL8) {
  843. p = ((const uint32_t *)(srcSlice[1]))[i];
  844. r = (p >> 16) & 0xFF;
  845. g = (p >> 8) & 0xFF;
  846. b = p & 0xFF;
  847. } else if (c->srcFormat == PIX_FMT_RGB8) {
  848. r = ( i >> 5 ) * 36;
  849. g = ((i >> 2) & 7) * 36;
  850. b = ( i & 3) * 85;
  851. } else if (c->srcFormat == PIX_FMT_BGR8) {
  852. b = ( i >> 6 ) * 85;
  853. g = ((i >> 3) & 7) * 36;
  854. r = ( i & 7) * 36;
  855. } else if (c->srcFormat == PIX_FMT_RGB4_BYTE) {
  856. r = ( i >> 3 ) * 255;
  857. g = ((i >> 1) & 3) * 85;
  858. b = ( i & 1) * 255;
  859. } else if (c->srcFormat == PIX_FMT_GRAY8 ||
  860. c->srcFormat == PIX_FMT_Y400A) {
  861. r = g = b = i;
  862. } else {
  863. assert(c->srcFormat == PIX_FMT_BGR4_BYTE);
  864. b = ( i >> 3 ) * 255;
  865. g = ((i >> 1) & 3) * 85;
  866. r = ( i & 1) * 255;
  867. }
  868. y = av_clip_uint8((RY * r + GY * g + BY * b + ( 33 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
  869. u = av_clip_uint8((RU * r + GU * g + BU * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
  870. v = av_clip_uint8((RV * r + GV * g + BV * b + (257 << (RGB2YUV_SHIFT - 1))) >> RGB2YUV_SHIFT);
  871. c->pal_yuv[i] = y + (u << 8) + (v << 16);
  872. switch (c->dstFormat) {
  873. case PIX_FMT_BGR32:
  874. #if !HAVE_BIGENDIAN
  875. case PIX_FMT_RGB24:
  876. #endif
  877. c->pal_rgb[i] = r + (g << 8) + (b << 16);
  878. break;
  879. case PIX_FMT_BGR32_1:
  880. #if HAVE_BIGENDIAN
  881. case PIX_FMT_BGR24:
  882. #endif
  883. c->pal_rgb[i] = (r + (g << 8) + (b << 16)) << 8;
  884. break;
  885. case PIX_FMT_RGB32_1:
  886. #if HAVE_BIGENDIAN
  887. case PIX_FMT_RGB24:
  888. #endif
  889. c->pal_rgb[i] = (b + (g << 8) + (r << 16)) << 8;
  890. break;
  891. case PIX_FMT_RGB32:
  892. #if !HAVE_BIGENDIAN
  893. case PIX_FMT_BGR24:
  894. #endif
  895. default:
  896. c->pal_rgb[i] = b + (g << 8) + (r << 16);
  897. }
  898. }
  899. }
  900. // copy strides, so they can safely be modified
  901. if (c->sliceDir == 1) {
  902. // slices go from top to bottom
  903. int srcStride2[4] = { srcStride[0], srcStride[1], srcStride[2],
  904. srcStride[3] };
  905. int dstStride2[4] = { dstStride[0], dstStride[1], dstStride[2],
  906. dstStride[3] };
  907. reset_ptr(src2, c->srcFormat);
  908. reset_ptr((const uint8_t **) dst2, c->dstFormat);
  909. /* reset slice direction at end of frame */
  910. if (srcSliceY + srcSliceH == c->srcH)
  911. c->sliceDir = 0;
  912. return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2,
  913. dstStride2);
  914. } else {
  915. // slices go from bottom to top => we flip the image internally
  916. int srcStride2[4] = { -srcStride[0], -srcStride[1], -srcStride[2],
  917. -srcStride[3] };
  918. int dstStride2[4] = { -dstStride[0], -dstStride[1], -dstStride[2],
  919. -dstStride[3] };
  920. src2[0] += (srcSliceH - 1) * srcStride[0];
  921. if (!usePal(c->srcFormat))
  922. src2[1] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[1];
  923. src2[2] += ((srcSliceH >> c->chrSrcVSubSample) - 1) * srcStride[2];
  924. src2[3] += (srcSliceH - 1) * srcStride[3];
  925. dst2[0] += ( c->dstH - 1) * dstStride[0];
  926. dst2[1] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[1];
  927. dst2[2] += ((c->dstH >> c->chrDstVSubSample) - 1) * dstStride[2];
  928. dst2[3] += ( c->dstH - 1) * dstStride[3];
  929. reset_ptr(src2, c->srcFormat);
  930. reset_ptr((const uint8_t **) dst2, c->dstFormat);
  931. /* reset slice direction at end of frame */
  932. if (!srcSliceY)
  933. c->sliceDir = 0;
  934. return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH,
  935. srcSliceH, dst2, dstStride2);
  936. }
  937. }
  938. /* Convert the palette to the same packed 32-bit format as the palette */
  939. void sws_convertPalette8ToPacked32(const uint8_t *src, uint8_t *dst,
  940. int num_pixels, const uint8_t *palette)
  941. {
  942. int i;
  943. for (i = 0; i < num_pixels; i++)
  944. ((uint32_t *) dst)[i] = ((const uint32_t *) palette)[src[i]];
  945. }
  946. /* Palette format: ABCD -> dst format: ABC */
  947. void sws_convertPalette8ToPacked24(const uint8_t *src, uint8_t *dst,
  948. int num_pixels, const uint8_t *palette)
  949. {
  950. int i;
  951. for (i = 0; i < num_pixels; i++) {
  952. //FIXME slow?
  953. dst[0] = palette[src[i] * 4 + 0];
  954. dst[1] = palette[src[i] * 4 + 1];
  955. dst[2] = palette[src[i] * 4 + 2];
  956. dst += 3;
  957. }
  958. }