FFmpeg: libswscale/yuv2rgb.c Source File

FFmpeg

[フレーム]

libswscale

yuv2rgb.c

Go to the documentation of this file.

1 /*

2 * software YUV to RGB converter

3 *

5 *

6 * 1,4,8bpp support and context / deglobalize stuff

7 * by Michael Niedermayer (michaelni@gmx.at)

8 *

9 * This file is part of FFmpeg.

10 *

11 * FFmpeg is free software; you can redistribute it and/or

12 * modify it under the terms of the GNU Lesser General Public

13 * License as published by the Free Software Foundation; either

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

15 *

16 * FFmpeg is distributed in the hope that it will be useful,

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

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

19 * Lesser General Public License for more details.

20 *

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

22 * License along with FFmpeg; if not, write to the Free Software

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

24 */

26 #include <stdio.h>

27 #include <stdlib.h>

28 #include <inttypes.h>

30 #include "libavutil/cpu.h"

31 #include "libavutil/bswap.h"

32 #include "config.h"

33 #include "rgb2rgb.h"

34 #include "swscale.h"

35 #include "swscale_internal.h"

36 #include "libavutil/pixdesc.h"

38 const int32_t ff_yuv2rgb_coeffs[8][4] = {

39 { 117504, 138453, 13954, 34903 }, /* no sequence_display_extension */

40 { 117504, 138453, 13954, 34903 }, /* ITU-R Rec. 709 (1990) */

41 { 104597, 132201, 25675, 53279 }, /* unspecified */

42 { 104597, 132201, 25675, 53279 }, /* reserved */

43 { 104448, 132798, 24759, 53109 }, /* FCC */

44 { 104597, 132201, 25675, 53279 }, /* ITU-R Rec. 624-4 System B, G */

45 { 104597, 132201, 25675, 53279 }, /* SMPTE 170M */

46 { 117579, 136230, 16907, 35559 } /* SMPTE 240M (1987) */

47 };

49 const int *sws_getCoefficients(int colorspace)

50 {

51 if (colorspace > 7 || colorspace < 0)

52 colorspace = SWS_CS_DEFAULT;

53 return ff_yuv2rgb_coeffs[colorspace];

54 }

56 #define LOADCHROMA(i) \

57 U = pu[i]; \

58 V = pv[i]; \

59 r = (void *)c->table_rV[V+YUVRGB_TABLE_HEADROOM]; \

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

61 b = (void *)c->table_bU[U+YUVRGB_TABLE_HEADROOM];

63 #define PUTRGB(dst, src, i) \

64 Y = src[2 * i]; \

65 dst[2 * i] = r[Y] + g[Y] + b[Y]; \

66 Y = src[2 * i + 1]; \

67 dst[2 * i + 1] = r[Y] + g[Y] + b[Y];

69 #define PUTRGB24(dst, src, i) \

70 Y = src[2 * i]; \

71 dst[6 * i + 0] = r[Y]; \

72 dst[6 * i + 1] = g[Y]; \

73 dst[6 * i + 2] = b[Y]; \

74 Y = src[2 * i + 1]; \

75 dst[6 * i + 3] = r[Y]; \

76 dst[6 * i + 4] = g[Y]; \

77 dst[6 * i + 5] = b[Y];

79 #define PUTBGR24(dst, src, i) \

80 Y = src[2 * i]; \

81 dst[6 * i + 0] = b[Y]; \

82 dst[6 * i + 1] = g[Y]; \

83 dst[6 * i + 2] = r[Y]; \

84 Y = src[2 * i + 1]; \

85 dst[6 * i + 3] = b[Y]; \

86 dst[6 * i + 4] = g[Y]; \

87 dst[6 * i + 5] = r[Y];

89 #define PUTRGBA(dst, ysrc, asrc, i, s) \

90 Y = ysrc[2 * i]; \

91 dst[2 * i] = r[Y] + g[Y] + b[Y] + (asrc[2 * i] << s); \

92 Y = ysrc[2 * i + 1]; \

93 dst[2 * i + 1] = r[Y] + g[Y] + b[Y] + (asrc[2 * i + 1] << s);

95 #define PUTRGB48(dst, src, i) \

96 Y = src[ 2 * i]; \

97 dst[12 * i + 0] = dst[12 * i + 1] = r[Y]; \

98 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \

99 dst[12 * i + 4] = dst[12 * i + 5] = b[Y]; \

100 Y = src[ 2 * i + 1]; \

101 dst[12 * i + 6] = dst[12 * i + 7] = r[Y]; \

102 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \

103 dst[12 * i + 10] = dst[12 * i + 11] = b[Y];

104

105 #define PUTBGR48(dst, src, i) \

106 Y = src[2 * i]; \

107 dst[12 * i + 0] = dst[12 * i + 1] = b[Y]; \

108 dst[12 * i + 2] = dst[12 * i + 3] = g[Y]; \

109 dst[12 * i + 4] = dst[12 * i + 5] = r[Y]; \

110 Y = src[2 * i + 1]; \

111 dst[12 * i + 6] = dst[12 * i + 7] = b[Y]; \

112 dst[12 * i + 8] = dst[12 * i + 9] = g[Y]; \

113 dst[12 * i + 10] = dst[12 * i + 11] = r[Y];

114

115 #define YUV2RGBFUNC(func_name, dst_type, alpha) \

116 static int func_name(SwsContext *c, const uint8_t *src[], \

117 int srcStride[], int srcSliceY, int srcSliceH, \

118 uint8_t *dst[], int dstStride[]) \

119 { \

120 int y; \

121 \

122 if (!alpha && c->srcFormat == AV_PIX_FMT_YUV422P) { \

123 srcStride[1] *= 2; \

124 srcStride[2] *= 2; \

125 } \

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

127 dst_type *dst_1 = \

128 (dst_type *)(dst[0] + (y + srcSliceY) * dstStride[0]); \

129 dst_type *dst_2 = \

130 (dst_type *)(dst[0] + (y + srcSliceY + 1) * dstStride[0]); \

131 dst_type av_unused *r, *g, *b; \

132 const uint8_t *py_1 = src[0] + y * srcStride[0]; \

133 const uint8_t *py_2 = py_1 + srcStride[0]; \

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

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

136 const uint8_t av_unused *pa_1, *pa_2; \

137 unsigned int h_size = c->dstW >> 3; \

138 if (alpha) { \

139 pa_1 = src[3] + y * srcStride[3]; \

140 pa_2 = pa_1 + srcStride[3]; \

141 } \

142 while (h_size--) { \

143 int av_unused U, V, Y; \

144

145 #define ENDYUV2RGBLINE(dst_delta, ss) \

146 pu += 4 >> ss; \

147 pv += 4 >> ss; \

148 py_1 += 8 >> ss; \

149 py_2 += 8 >> ss; \

150 dst_1 += dst_delta >> ss; \

151 dst_2 += dst_delta >> ss; \

152 } \

153 if (c->dstW & (4 >> ss)) { \

154 int av_unused Y, U, V; \

155

156 #define ENDYUV2RGBFUNC() \

157 } \

158 } \

159 return srcSliceH; \

160 }

161

162 #define CLOSEYUV2RGBFUNC(dst_delta) \

163 ENDYUV2RGBLINE(dst_delta, 0) \

164 ENDYUV2RGBFUNC()

165

166 YUV2RGBFUNC(yuv2rgb_c_48, uint8_t, 0)

167 LOADCHROMA(0);

168 PUTRGB48(dst_1, py_1, 0);

169 PUTRGB48(dst_2, py_2, 0);

170

171 LOADCHROMA(1);

172 PUTRGB48(dst_2, py_2, 1);

173 PUTRGB48(dst_1, py_1, 1);

174

175 LOADCHROMA(2);

176 PUTRGB48(dst_1, py_1, 2);

177 PUTRGB48(dst_2, py_2, 2);

178

179 LOADCHROMA(3);

180 PUTRGB48(dst_2, py_2, 3);

181 PUTRGB48(dst_1, py_1, 3);

182 ENDYUV2RGBLINE(48, 0)

183 LOADCHROMA(0);

184 PUTRGB48(dst_1, py_1, 0);

185 PUTRGB48(dst_2, py_2, 0);

186

187 LOADCHROMA(1);

188 PUTRGB48(dst_2, py_2, 1);

189 PUTRGB48(dst_1, py_1, 1);

190 ENDYUV2RGBLINE(48, 1)

191 LOADCHROMA(0);

192 PUTRGB48(dst_1, py_1, 0);

193 PUTRGB48(dst_2, py_2, 0);

194 ENDYUV2RGBFUNC()

195

196 YUV2RGBFUNC(yuv2rgb_c_bgr48, uint8_t, 0)

197 LOADCHROMA(0);

198 PUTBGR48(dst_1, py_1, 0);

199 PUTBGR48(dst_2, py_2, 0);

200

201 LOADCHROMA(1);

202 PUTBGR48(dst_2, py_2, 1);

203 PUTBGR48(dst_1, py_1, 1);

204

205 LOADCHROMA(2);

206 PUTBGR48(dst_1, py_1, 2);

207 PUTBGR48(dst_2, py_2, 2);

208

209 LOADCHROMA(3);

210 PUTBGR48(dst_2, py_2, 3);

211 PUTBGR48(dst_1, py_1, 3);

212 ENDYUV2RGBLINE(48, 0)

213 LOADCHROMA(0);

214 PUTBGR48(dst_1, py_1, 0);

215 PUTBGR48(dst_2, py_2, 0);

216

217 LOADCHROMA(1);

218 PUTBGR48(dst_2, py_2, 1);

219 PUTBGR48(dst_1, py_1, 1);

220 ENDYUV2RGBLINE(48, 1)

221 LOADCHROMA(0);

222 PUTBGR48(dst_1, py_1, 0);

223 PUTBGR48(dst_2, py_2, 0);

224 ENDYUV2RGBFUNC()

225

226 YUV2RGBFUNC(yuv2rgb_c_32, uint32_t, 0)

227 LOADCHROMA(0);

228 PUTRGB(dst_1, py_1, 0);

229 PUTRGB(dst_2, py_2, 0);

230

231 LOADCHROMA(1);

232 PUTRGB(dst_2, py_2, 1);

233 PUTRGB(dst_1, py_1, 1);

234

235 LOADCHROMA(2);

236 PUTRGB(dst_1, py_1, 2);

237 PUTRGB(dst_2, py_2, 2);

238

239 LOADCHROMA(3);

240 PUTRGB(dst_2, py_2, 3);

241 PUTRGB(dst_1, py_1, 3);

242 ENDYUV2RGBLINE(8, 0)

243 LOADCHROMA(0);

244 PUTRGB(dst_1, py_1, 0);

245 PUTRGB(dst_2, py_2, 0);

246

247 LOADCHROMA(1);

248 PUTRGB(dst_2, py_2, 1);

249 PUTRGB(dst_1, py_1, 1);

250 ENDYUV2RGBLINE(8, 1)

251 LOADCHROMA(0);

252 PUTRGB(dst_1, py_1, 0);

253 PUTRGB(dst_2, py_2, 0);

254 ENDYUV2RGBFUNC()

255

256 YUV2RGBFUNC(yuva2rgba_c, uint32_t, 1)

257 LOADCHROMA(0);

258 PUTRGBA(dst_1, py_1, pa_1, 0, 24);

259 PUTRGBA(dst_2, py_2, pa_2, 0, 24);

260

261 LOADCHROMA(1);

262 PUTRGBA(dst_2, py_2, pa_2, 1, 24);

263 PUTRGBA(dst_1, py_1, pa_1, 1, 24);

264

265 LOADCHROMA(2);

266 PUTRGBA(dst_1, py_1, pa_1, 2, 24);

267 PUTRGBA(dst_2, py_2, pa_2, 2, 24);

268

269 LOADCHROMA(3);

270 PUTRGBA(dst_2, py_2, pa_2, 3, 24);

271 PUTRGBA(dst_1, py_1, pa_1, 3, 24);

272 pa_1 += 8;

273 pa_2 += 8;

274 ENDYUV2RGBLINE(8, 0)

275 LOADCHROMA(0);

276 PUTRGBA(dst_1, py_1, pa_1, 0, 24);

277 PUTRGBA(dst_2, py_2, pa_2, 0, 24);

278

279 LOADCHROMA(1);

280 PUTRGBA(dst_2, py_2, pa_2, 1, 24);

281 PUTRGBA(dst_1, py_1, pa_1, 1, 24);

282 pa_1 += 4;

283 pa_2 += 4;

284 ENDYUV2RGBLINE(8, 1)

285 LOADCHROMA(0);

286 PUTRGBA(dst_1, py_1, pa_1, 0, 24);

287 PUTRGBA(dst_2, py_2, pa_2, 0, 24);

288 ENDYUV2RGBFUNC()

289

290 YUV2RGBFUNC(yuva2argb_c, uint32_t, 1)

291 LOADCHROMA(0);

292 PUTRGBA(dst_1, py_1, pa_1, 0, 0);

293 PUTRGBA(dst_2, py_2, pa_2, 0, 0);

294

295 LOADCHROMA(1);

296 PUTRGBA(dst_2, py_2, pa_2, 1, 0);

297 PUTRGBA(dst_1, py_1, pa_1, 1, 0);

298

299 LOADCHROMA(2);

300 PUTRGBA(dst_1, py_1, pa_1, 2, 0);

301 PUTRGBA(dst_2, py_2, pa_2, 2, 0);

302

303 LOADCHROMA(3);

304 PUTRGBA(dst_2, py_2, pa_2, 3, 0);

305 PUTRGBA(dst_1, py_1, pa_1, 3, 0);

306 pa_1 += 8;

307 pa_2 += 8;

308 ENDYUV2RGBLINE(8, 0)

309 LOADCHROMA(0);

310 PUTRGBA(dst_1, py_1, pa_1, 0, 0);

311 PUTRGBA(dst_2, py_2, pa_2, 0, 0);

312

313 LOADCHROMA(1);

314 PUTRGBA(dst_2, py_2, pa_2, 1, 0);

315 PUTRGBA(dst_1, py_1, pa_1, 1, 0);

316 pa_1 += 4;

317 pa_2 += 4;

318 ENDYUV2RGBLINE(8, 1)

319 LOADCHROMA(0);

320 PUTRGBA(dst_1, py_1, pa_1, 0, 0);

321 PUTRGBA(dst_2, py_2, pa_2, 0, 0);

322 ENDYUV2RGBFUNC()

323

324 YUV2RGBFUNC(yuv2rgb_c_24_rgb, uint8_t, 0)

325 LOADCHROMA(0);

326 PUTRGB24(dst_1, py_1, 0);

327 PUTRGB24(dst_2, py_2, 0);

328

329 LOADCHROMA(1);

330 PUTRGB24(dst_2, py_2, 1);

331 PUTRGB24(dst_1, py_1, 1);

332

333 LOADCHROMA(2);

334 PUTRGB24(dst_1, py_1, 2);

335 PUTRGB24(dst_2, py_2, 2);

336

337 LOADCHROMA(3);

338 PUTRGB24(dst_2, py_2, 3);

339 PUTRGB24(dst_1, py_1, 3);

340 ENDYUV2RGBLINE(24, 0)

341 LOADCHROMA(0);

342 PUTRGB24(dst_1, py_1, 0);

343 PUTRGB24(dst_2, py_2, 0);

344

345 LOADCHROMA(1);

346 PUTRGB24(dst_2, py_2, 1);

347 PUTRGB24(dst_1, py_1, 1);

348 ENDYUV2RGBLINE(24, 1)

349 LOADCHROMA(0);

350 PUTRGB24(dst_1, py_1, 0);

351 PUTRGB24(dst_2, py_2, 0);

352 ENDYUV2RGBFUNC()

353

354 // only trivial mods from yuv2rgb_c_24_rgb

355 YUV2RGBFUNC(yuv2rgb_c_24_bgr, uint8_t, 0)

356 LOADCHROMA(0);

357 PUTBGR24(dst_1, py_1, 0);

358 PUTBGR24(dst_2, py_2, 0);

359

360 LOADCHROMA(1);

361 PUTBGR24(dst_2, py_2, 1);

362 PUTBGR24(dst_1, py_1, 1);

363

364 LOADCHROMA(2);

365 PUTBGR24(dst_1, py_1, 2);

366 PUTBGR24(dst_2, py_2, 2);

367

368 LOADCHROMA(3);

369 PUTBGR24(dst_2, py_2, 3);

370 PUTBGR24(dst_1, py_1, 3);

371 ENDYUV2RGBLINE(24, 0)

372 LOADCHROMA(0);

373 PUTBGR24(dst_1, py_1, 0);

374 PUTBGR24(dst_2, py_2, 0);

375

376 LOADCHROMA(1);

377 PUTBGR24(dst_2, py_2, 1);

378 PUTBGR24(dst_1, py_1, 1);

379 ENDYUV2RGBLINE(24, 1)

380 LOADCHROMA(0);

381 PUTBGR24(dst_1, py_1, 0);

382 PUTBGR24(dst_2, py_2, 0);

383 ENDYUV2RGBFUNC()

384

385 YUV2RGBFUNC(yuv2rgb_c_16_ordered_dither, uint16_t, 0)

386 const uint8_t *d16 = ff_dither_2x2_8[y & 1];

387 const uint8_t *e16 = ff_dither_2x2_4[y & 1];

388 const uint8_t *f16 = ff_dither_2x2_8[(y & 1)^1];

389

390 #define PUTRGB16(dst, src, i, o) \

391 Y = src[2 * i]; \

392 dst[2 * i] = r[Y + d16[0 + o]] + \

393 g[Y + e16[0 + o]] + \

394 b[Y + f16[0 + o]]; \

395 Y = src[2 * i + 1]; \

396 dst[2 * i + 1] = r[Y + d16[1 + o]] + \

397 g[Y + e16[1 + o]] + \

398 b[Y + f16[1 + o]];

399 LOADCHROMA(0);

400 PUTRGB16(dst_1, py_1, 0, 0);

401 PUTRGB16(dst_2, py_2, 0, 0 + 8);

402

403 LOADCHROMA(1);

404 PUTRGB16(dst_2, py_2, 1, 2 + 8);

405 PUTRGB16(dst_1, py_1, 1, 2);

406

407 LOADCHROMA(2);

408 PUTRGB16(dst_1, py_1, 2, 4);

409 PUTRGB16(dst_2, py_2, 2, 4 + 8);

410

411 LOADCHROMA(3);

412 PUTRGB16(dst_2, py_2, 3, 6 + 8);

413 PUTRGB16(dst_1, py_1, 3, 6);

414 CLOSEYUV2RGBFUNC(8)

415

416 YUV2RGBFUNC(yuv2rgb_c_15_ordered_dither, uint16_t, 0)

417 const uint8_t *d16 = ff_dither_2x2_8[y & 1];

418 const uint8_t *e16 = ff_dither_2x2_8[(y & 1)^1];

419

420 #define PUTRGB15(dst, src, i, o) \

421 Y = src[2 * i]; \

422 dst[2 * i] = r[Y + d16[0 + o]] + \

423 g[Y + d16[1 + o]] + \

424 b[Y + e16[0 + o]]; \

425 Y = src[2 * i + 1]; \

426 dst[2 * i + 1] = r[Y + d16[1 + o]] + \

427 g[Y + d16[0 + o]] + \

428 b[Y + e16[1 + o]];

429 LOADCHROMA(0);

430 PUTRGB15(dst_1, py_1, 0, 0);

431 PUTRGB15(dst_2, py_2, 0, 0 + 8);

432

433 LOADCHROMA(1);

434 PUTRGB15(dst_2, py_2, 1, 2 + 8);

435 PUTRGB15(dst_1, py_1, 1, 2);

436

437 LOADCHROMA(2);

438 PUTRGB15(dst_1, py_1, 2, 4);

439 PUTRGB15(dst_2, py_2, 2, 4 + 8);

440

441 LOADCHROMA(3);

442 PUTRGB15(dst_2, py_2, 3, 6 + 8);

443 PUTRGB15(dst_1, py_1, 3, 6);

444 CLOSEYUV2RGBFUNC(8)

445

446 // r, g, b, dst_1, dst_2

447 YUV2RGBFUNC(yuv2rgb_c_12_ordered_dither, uint16_t, 0)

448 const uint8_t *d16 = ff_dither_4x4_16[y & 3];

449

450 #define PUTRGB12(dst, src, i, o) \

451 Y = src[2 * i]; \

452 dst[2 * i] = r[Y + d16[0 + o]] + \

453 g[Y + d16[0 + o]] + \

454 b[Y + d16[0 + o]]; \

455 Y = src[2 * i + 1]; \

456 dst[2 * i + 1] = r[Y + d16[1 + o]] + \

457 g[Y + d16[1 + o]] + \

458 b[Y + d16[1 + o]];

459

460 LOADCHROMA(0);

461 PUTRGB12(dst_1, py_1, 0, 0);

462 PUTRGB12(dst_2, py_2, 0, 0 + 8);

463

464 LOADCHROMA(1);

465 PUTRGB12(dst_2, py_2, 1, 2 + 8);

466 PUTRGB12(dst_1, py_1, 1, 2);

467

468 LOADCHROMA(2);

469 PUTRGB12(dst_1, py_1, 2, 4);

470 PUTRGB12(dst_2, py_2, 2, 4 + 8);

471

472 LOADCHROMA(3);

473 PUTRGB12(dst_2, py_2, 3, 6 + 8);

474 PUTRGB12(dst_1, py_1, 3, 6);

475 CLOSEYUV2RGBFUNC(8)

476

477 // r, g, b, dst_1, dst_2

478 YUV2RGBFUNC(yuv2rgb_c_8_ordered_dither, uint8_t, 0)

479 const uint8_t *d32 = ff_dither_8x8_32[y & 7];

480 const uint8_t *d64 = ff_dither_8x8_73[y & 7];

481

482 #define PUTRGB8(dst, src, i, o) \

483 Y = src[2 * i]; \

484 dst[2 * i] = r[Y + d32[0 + o]] + \

485 g[Y + d32[0 + o]] + \

486 b[Y + d64[0 + o]]; \

487 Y = src[2 * i + 1]; \

488 dst[2 * i + 1] = r[Y + d32[1 + o]] + \

489 g[Y + d32[1 + o]] + \

490 b[Y + d64[1 + o]];

491

492 LOADCHROMA(0);

493 PUTRGB8(dst_1, py_1, 0, 0);

494 PUTRGB8(dst_2, py_2, 0, 0 + 8);

495

496 LOADCHROMA(1);

497 PUTRGB8(dst_2, py_2, 1, 2 + 8);

498 PUTRGB8(dst_1, py_1, 1, 2);

499

500 LOADCHROMA(2);

501 PUTRGB8(dst_1, py_1, 2, 4);

502 PUTRGB8(dst_2, py_2, 2, 4 + 8);

503

504 LOADCHROMA(3);

505 PUTRGB8(dst_2, py_2, 3, 6 + 8);

506 PUTRGB8(dst_1, py_1, 3, 6);

507 CLOSEYUV2RGBFUNC(8)

508

509 YUV2RGBFUNC(yuv2rgb_c_4_ordered_dither, uint8_t, 0)

510 const uint8_t * d64 = ff_dither_8x8_73[y & 7];

511 const uint8_t *d128 = ff_dither_8x8_220[y & 7];

512 int acc;

513

514 #define PUTRGB4D(dst, src, i, o) \

515 Y = src[2 * i]; \

516 acc = r[Y + d128[0 + o]] + \

517 g[Y + d64[0 + o]] + \

518 b[Y + d128[0 + o]]; \

519 Y = src[2 * i + 1]; \

520 acc |= (r[Y + d128[1 + o]] + \

521 g[Y + d64[1 + o]] + \

522 b[Y + d128[1 + o]]) << 4; \

523 dst[i] = acc;

524

525 LOADCHROMA(0);

526 PUTRGB4D(dst_1, py_1, 0, 0);

527 PUTRGB4D(dst_2, py_2, 0, 0 + 8);

528

529 LOADCHROMA(1);

530 PUTRGB4D(dst_2, py_2, 1, 2 + 8);

531 PUTRGB4D(dst_1, py_1, 1, 2);

532

533 LOADCHROMA(2);

534 PUTRGB4D(dst_1, py_1, 2, 4);

535 PUTRGB4D(dst_2, py_2, 2, 4 + 8);

536

537 LOADCHROMA(3);

538 PUTRGB4D(dst_2, py_2, 3, 6 + 8);

539 PUTRGB4D(dst_1, py_1, 3, 6);

540 CLOSEYUV2RGBFUNC(4)

541

542 YUV2RGBFUNC(yuv2rgb_c_4b_ordered_dither, uint8_t, 0)

543 const uint8_t *d64 = ff_dither_8x8_73[y & 7];

544 const uint8_t *d128 = ff_dither_8x8_220[y & 7];

545

546 #define PUTRGB4DB(dst, src, i, o) \

547 Y = src[2 * i]; \

548 dst[2 * i] = r[Y + d128[0 + o]] + \

549 g[Y + d64[0 + o]] + \

550 b[Y + d128[0 + o]]; \

551 Y = src[2 * i + 1]; \

552 dst[2 * i + 1] = r[Y + d128[1 + o]] + \

553 g[Y + d64[1 + o]] + \

554 b[Y + d128[1 + o]];

555

556 LOADCHROMA(0);

557 PUTRGB4DB(dst_1, py_1, 0, 0);

558 PUTRGB4DB(dst_2, py_2, 0, 0 + 8);

559

560 LOADCHROMA(1);

561 PUTRGB4DB(dst_2, py_2, 1, 2 + 8);

562 PUTRGB4DB(dst_1, py_1, 1, 2);

563

564 LOADCHROMA(2);

565 PUTRGB4DB(dst_1, py_1, 2, 4);

566 PUTRGB4DB(dst_2, py_2, 2, 4 + 8);

567

568 LOADCHROMA(3);

569 PUTRGB4DB(dst_2, py_2, 3, 6 + 8);

570 PUTRGB4DB(dst_1, py_1, 3, 6);

571 CLOSEYUV2RGBFUNC(8)

572

573 YUV2RGBFUNC(yuv2rgb_c_1_ordered_dither, uint8_t, 0)

574 const uint8_t *d128 = ff_dither_8x8_220[y & 7];

575 char out_1 = 0, out_2 = 0;

576 g = c->table_gU[128 + YUVRGB_TABLE_HEADROOM] + c->table_gV[128 + YUVRGB_TABLE_HEADROOM];

577

578 #define PUTRGB1(out, src, i, o) \

579 Y = src[2 * i]; \

580 out += out + g[Y + d128[0 + o]]; \

581 Y = src[2 * i + 1]; \

582 out += out + g[Y + d128[1 + o]];

583

584 PUTRGB1(out_1, py_1, 0, 0);

585 PUTRGB1(out_2, py_2, 0, 0 + 8);

586

587 PUTRGB1(out_2, py_2, 1, 2 + 8);

588 PUTRGB1(out_1, py_1, 1, 2);

589

590 PUTRGB1(out_1, py_1, 2, 4);

591 PUTRGB1(out_2, py_2, 2, 4 + 8);

592

593 PUTRGB1(out_2, py_2, 3, 6 + 8);

594 PUTRGB1(out_1, py_1, 3, 6);

595

596 dst_1[0] = out_1;

597 dst_2[0] = out_2;

598 CLOSEYUV2RGBFUNC(1)

599

600 SwsFunc ff_yuv2rgb_get_func_ptr(SwsContext *c)

601 {

602 SwsFunc t = NULL;

603

604 if (ARCH_BFIN)

605 t = ff_yuv2rgb_init_bfin(c);

606 if (ARCH_PPC)

607 t = ff_yuv2rgb_init_ppc(c);

608 if (HAVE_VIS)

609 t = ff_yuv2rgb_init_vis(c);

610 if (ARCH_X86)

611 t = ff_yuv2rgb_init_x86(c);

612

613 if (t)

614 return t;

615

616 av_log(c, AV_LOG_WARNING,

617 "No accelerated colorspace conversion found from %s to %s.\n",

618 av_get_pix_fmt_name(c->srcFormat), av_get_pix_fmt_name(c->dstFormat));

619

620 switch (c->dstFormat) {

621 case AV_PIX_FMT_BGR48BE:

622 case AV_PIX_FMT_BGR48LE:

623 return yuv2rgb_c_bgr48;

624 case AV_PIX_FMT_RGB48BE:

625 case AV_PIX_FMT_RGB48LE:

626 return yuv2rgb_c_48;

627 case AV_PIX_FMT_ARGB:

628 case AV_PIX_FMT_ABGR:

629 if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat))

630 return yuva2argb_c;

631 case AV_PIX_FMT_RGBA:

632 case AV_PIX_FMT_BGRA:

633 return (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat)) ? yuva2rgba_c : yuv2rgb_c_32;

634 case AV_PIX_FMT_RGB24:

635 return yuv2rgb_c_24_rgb;

636 case AV_PIX_FMT_BGR24:

637 return yuv2rgb_c_24_bgr;

638 case AV_PIX_FMT_RGB565:

639 case AV_PIX_FMT_BGR565:

640 return yuv2rgb_c_16_ordered_dither;

641 case AV_PIX_FMT_RGB555:

642 case AV_PIX_FMT_BGR555:

643 return yuv2rgb_c_15_ordered_dither;

644 case AV_PIX_FMT_RGB444:

645 case AV_PIX_FMT_BGR444:

646 return yuv2rgb_c_12_ordered_dither;

647 case AV_PIX_FMT_RGB8:

648 case AV_PIX_FMT_BGR8:

649 return yuv2rgb_c_8_ordered_dither;

650 case AV_PIX_FMT_RGB4:

651 case AV_PIX_FMT_BGR4:

652 return yuv2rgb_c_4_ordered_dither;

653 case AV_PIX_FMT_RGB4_BYTE:

654 case AV_PIX_FMT_BGR4_BYTE:

655 return yuv2rgb_c_4b_ordered_dither;

656 case AV_PIX_FMT_MONOBLACK:

657 return yuv2rgb_c_1_ordered_dither;

658 }

659 return NULL;

660 }

661

662 static void fill_table(uint8_t* table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize,

663 const int64_t inc, void *y_tab)

664 {

665 int i;

666 uint8_t *y_table = y_tab;

667

668 y_table -= elemsize * (inc >> 9);

669

670 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {

671 int64_t cb = av_clip(i-YUVRGB_TABLE_HEADROOM, 0, 255)*inc;

672 table[i] = y_table + elemsize * (cb >> 16);

673 }

674 }

675

676 static void fill_gv_table(int table[256 + 2*YUVRGB_TABLE_HEADROOM], const int elemsize, const int64_t inc)

677 {

678 int i;

679 int off = -(inc >> 9);

680

681 for (i = 0; i < 256 + 2*YUVRGB_TABLE_HEADROOM; i++) {

682 int64_t cb = av_clip(i-YUVRGB_TABLE_HEADROOM, 0, 255)*inc;

683 table[i] = elemsize * (off + (cb >> 16));

684 }

685 }

686

687 static uint16_t roundToInt16(int64_t f)

688 {

689 int r = (f + (1 << 15)) >> 16;

690

691 if (r < -0x7FFF)

692 return 0x8000;

693 else if (r > 0x7FFF)

694 return 0x7FFF;

695 else

696 return r;

697 }

698

699 av_cold int ff_yuv2rgb_c_init_tables(SwsContext *c, const int inv_table[4],

700 int fullRange, int brightness,

701 int contrast, int saturation)

702 {

703 const int isRgb = c->dstFormat == AV_PIX_FMT_RGB32 ||

704 c->dstFormat == AV_PIX_FMT_RGB32_1 ||

705 c->dstFormat == AV_PIX_FMT_BGR24 ||

706 c->dstFormat == AV_PIX_FMT_RGB565BE ||

707 c->dstFormat == AV_PIX_FMT_RGB565LE ||

708 c->dstFormat == AV_PIX_FMT_RGB555BE ||

709 c->dstFormat == AV_PIX_FMT_RGB555LE ||

710 c->dstFormat == AV_PIX_FMT_RGB444BE ||

711 c->dstFormat == AV_PIX_FMT_RGB444LE ||

712 c->dstFormat == AV_PIX_FMT_RGB8 ||

713 c->dstFormat == AV_PIX_FMT_RGB4 ||

714 c->dstFormat == AV_PIX_FMT_RGB4_BYTE ||

715 c->dstFormat == AV_PIX_FMT_MONOBLACK;

716 const int isNotNe = c->dstFormat == AV_PIX_FMT_NE(RGB565LE, RGB565BE) ||

717 c->dstFormat == AV_PIX_FMT_NE(RGB555LE, RGB555BE) ||

718 c->dstFormat == AV_PIX_FMT_NE(RGB444LE, RGB444BE) ||

719 c->dstFormat == AV_PIX_FMT_NE(BGR565LE, BGR565BE) ||

720 c->dstFormat == AV_PIX_FMT_NE(BGR555LE, BGR555BE) ||

721 c->dstFormat == AV_PIX_FMT_NE(BGR444LE, BGR444BE);

722 const int bpp = c->dstFormatBpp;

723 uint8_t *y_table;

724 uint16_t *y_table16;

725 uint32_t *y_table32;

726 int i, base, rbase, gbase, bbase, av_uninit(abase), needAlpha;

727 const int yoffs = fullRange ? 384 : 326;

728

729 int64_t crv = inv_table[0];

730 int64_t cbu = inv_table[1];

731 int64_t cgu = -inv_table[2];

732 int64_t cgv = -inv_table[3];

733 int64_t cy = 1 << 16;

734 int64_t oy = 0;

735 int64_t yb = 0;

736

737 if (!fullRange) {

738 cy = (cy * 255) / 219;

739 oy = 16 << 16;

740 } else {

741 crv = (crv * 224) / 255;

742 cbu = (cbu * 224) / 255;

743 cgu = (cgu * 224) / 255;

744 cgv = (cgv * 224) / 255;

745 }

746

747 cy = (cy * contrast) >> 16;

748 crv = (crv * contrast * saturation) >> 32;

749 cbu = (cbu * contrast * saturation) >> 32;

750 cgu = (cgu * contrast * saturation) >> 32;

751 cgv = (cgv * contrast * saturation) >> 32;

752 oy -= 256 * brightness;

753

754 c->uOffset = 0x0400040004000400LL;

755 c->vOffset = 0x0400040004000400LL;

756 c->yCoeff = roundToInt16(cy * 8192) * 0x0001000100010001ULL;

757 c->vrCoeff = roundToInt16(crv * 8192) * 0x0001000100010001ULL;

758 c->ubCoeff = roundToInt16(cbu * 8192) * 0x0001000100010001ULL;

759 c->vgCoeff = roundToInt16(cgv * 8192) * 0x0001000100010001ULL;

760 c->ugCoeff = roundToInt16(cgu * 8192) * 0x0001000100010001ULL;

761 c->yOffset = roundToInt16(oy * 8) * 0x0001000100010001ULL;

762

763 c->yuv2rgb_y_coeff = (int16_t)roundToInt16(cy << 13);

764 c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

765 c->yuv2rgb_v2r_coeff = (int16_t)roundToInt16(crv << 13);

766 c->yuv2rgb_v2g_coeff = (int16_t)roundToInt16(cgv << 13);

767 c->yuv2rgb_u2g_coeff = (int16_t)roundToInt16(cgu << 13);

768 c->yuv2rgb_u2b_coeff = (int16_t)roundToInt16(cbu << 13);

769

770 //scale coefficients by cy

771 crv = ((crv << 16) + 0x8000) / FFMAX(cy, 1);

772 cbu = ((cbu << 16) + 0x8000) / FFMAX(cy, 1);

773 cgu = ((cgu << 16) + 0x8000) / FFMAX(cy, 1);

774 cgv = ((cgv << 16) + 0x8000) / FFMAX(cy, 1);

775

776 av_freep(&c->yuvTable);

777

778 switch (bpp) {

779 case 1:

780 c->yuvTable = av_malloc(1024);

781 y_table = c->yuvTable;

782 yb = -(384 << 16) - oy;

783 for (i = 0; i < 1024 - 110; i++) {

784 y_table[i + 110] = av_clip_uint8((yb + 0x8000) >> 16) >> 7;

785 yb += cy;

786 }

787 fill_table(c->table_gU, 1, cgu, y_table + yoffs);

788 fill_gv_table(c->table_gV, 1, cgv);

789 break;

790 case 4:

791 case 4 | 128:

792 rbase = isRgb ? 3 : 0;

793 gbase = 1;

794 bbase = isRgb ? 0 : 3;

795 c->yuvTable = av_malloc(1024 * 3);

796 y_table = c->yuvTable;

797 yb = -(384 << 16) - oy;

798 for (i = 0; i < 1024 - 110; i++) {

799 int yval = av_clip_uint8((yb + 0x8000) >> 16);

800 y_table[i + 110] = (yval >> 7) << rbase;

801 y_table[i + 37 + 1024] = ((yval + 43) / 85) << gbase;

802 y_table[i + 110 + 2048] = (yval >> 7) << bbase;

803 yb += cy;

804 }

805 fill_table(c->table_rV, 1, crv, y_table + yoffs);

806 fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);

807 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);

808 fill_gv_table(c->table_gV, 1, cgv);

809 break;

810 case 8:

811 rbase = isRgb ? 5 : 0;

812 gbase = isRgb ? 2 : 3;

813 bbase = isRgb ? 0 : 6;

814 c->yuvTable = av_malloc(1024 * 3);

815 y_table = c->yuvTable;

816 yb = -(384 << 16) - oy;

817 for (i = 0; i < 1024 - 38; i++) {

818 int yval = av_clip_uint8((yb + 0x8000) >> 16);

819 y_table[i + 16] = ((yval + 18) / 36) << rbase;

820 y_table[i + 16 + 1024] = ((yval + 18) / 36) << gbase;

821 y_table[i + 37 + 2048] = ((yval + 43) / 85) << bbase;

822 yb += cy;

823 }

824 fill_table(c->table_rV, 1, crv, y_table + yoffs);

825 fill_table(c->table_gU, 1, cgu, y_table + yoffs + 1024);

826 fill_table(c->table_bU, 1, cbu, y_table + yoffs + 2048);

827 fill_gv_table(c->table_gV, 1, cgv);

828 break;

829 case 12:

830 rbase = isRgb ? 8 : 0;

831 gbase = 4;

832 bbase = isRgb ? 0 : 8;

833 c->yuvTable = av_malloc(1024 * 3 * 2);

834 y_table16 = c->yuvTable;

835 yb = -(384 << 16) - oy;

836 for (i = 0; i < 1024; i++) {

837 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);

838 y_table16[i] = (yval >> 4) << rbase;

839 y_table16[i + 1024] = (yval >> 4) << gbase;

840 y_table16[i + 2048] = (yval >> 4) << bbase;

841 yb += cy;

842 }

843 if (isNotNe)

844 for (i = 0; i < 1024 * 3; i++)

845 y_table16[i] = av_bswap16(y_table16[i]);

846 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);

847 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);

848 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);

849 fill_gv_table(c->table_gV, 2, cgv);

850 break;

851 case 15:

852 case 16:

853 rbase = isRgb ? bpp - 5 : 0;

854 gbase = 5;

855 bbase = isRgb ? 0 : (bpp - 5);

856 c->yuvTable = av_malloc(1024 * 3 * 2);

857 y_table16 = c->yuvTable;

858 yb = -(384 << 16) - oy;

859 for (i = 0; i < 1024; i++) {

860 uint8_t yval = av_clip_uint8((yb + 0x8000) >> 16);

861 y_table16[i] = (yval >> 3) << rbase;

862 y_table16[i + 1024] = (yval >> (18 - bpp)) << gbase;

863 y_table16[i + 2048] = (yval >> 3) << bbase;

864 yb += cy;

865 }

866 if (isNotNe)

867 for (i = 0; i < 1024 * 3; i++)

868 y_table16[i] = av_bswap16(y_table16[i]);

869 fill_table(c->table_rV, 2, crv, y_table16 + yoffs);

870 fill_table(c->table_gU, 2, cgu, y_table16 + yoffs + 1024);

871 fill_table(c->table_bU, 2, cbu, y_table16 + yoffs + 2048);

872 fill_gv_table(c->table_gV, 2, cgv);

873 break;

874 case 24:

875 case 48:

876 c->yuvTable = av_malloc(1024);

877 y_table = c->yuvTable;

878 yb = -(384 << 16) - oy;

879 for (i = 0; i < 1024; i++) {

880 y_table[i] = av_clip_uint8((yb + 0x8000) >> 16);

881 yb += cy;

882 }

883 fill_table(c->table_rV, 1, crv, y_table + yoffs);

884 fill_table(c->table_gU, 1, cgu, y_table + yoffs);

885 fill_table(c->table_bU, 1, cbu, y_table + yoffs);

886 fill_gv_table(c->table_gV, 1, cgv);

887 break;

888 case 32:

889 case 64:

890 base = (c->dstFormat == AV_PIX_FMT_RGB32_1 ||

891 c->dstFormat == AV_PIX_FMT_BGR32_1) ? 8 : 0;

892 rbase = base + (isRgb ? 16 : 0);

893 gbase = base + 8;

894 bbase = base + (isRgb ? 0 : 16);

895 needAlpha = CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat);

896 if (!needAlpha)

897 abase = (base + 24) & 31;

898 c->yuvTable = av_malloc(1024 * 3 * 4);

899 y_table32 = c->yuvTable;

900 yb = -(384 << 16) - oy;

901 for (i = 0; i < 1024; i++) {

902 unsigned yval = av_clip_uint8((yb + 0x8000) >> 16);

903 y_table32[i] = (yval << rbase) +

904 (needAlpha ? 0 : (255u << abase));

905 y_table32[i + 1024] = yval << gbase;

906 y_table32[i + 2048] = yval << bbase;

907 yb += cy;

908 }

909 fill_table(c->table_rV, 4, crv, y_table32 + yoffs);

910 fill_table(c->table_gU, 4, cgu, y_table32 + yoffs + 1024);

911 fill_table(c->table_bU, 4, cbu, y_table32 + yoffs + 2048);

912 fill_gv_table(c->table_gV, 4, cgv);

913 break;

914 default:

915 if(!isPlanar(c->dstFormat) || bpp <= 24)

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

917 return -1;

918 }

919 return 0;

920 }

Generated on Sat Jan 25 2014 19:52:07 for FFmpeg by doxygen 1.8.2