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Replace 5 with AOT_SBR when referring to the MPEG-4 audio object type.
[FFMpeg-mirror/lagarith.git] / libavcodec / imgconvert.c
blobade803f69fa0e446a328920c39295affca3da8cd
1 /*
2 * Misc image conversion routines
3 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file libavcodec/imgconvert.c
24 * misc image conversion routines
25 */
26
27 /* TODO:
28 * - write 'ffimg' program to test all the image related stuff
29 * - move all api to slice based system
30 * - integrate deinterlacing, postprocessing and scaling in the conversion process
31 */
32
33 #include "avcodec.h"
34 #include "dsputil.h"
35 #include "colorspace.h"
36
37 #if HAVE_MMX
38 #include "x86/mmx.h"
39 #include "x86/dsputil_mmx.h"
40 #endif
41
42 #define xglue(x, y) x ## y
43 #define glue(x, y) xglue(x, y)
44
45 #define FF_COLOR_RGB 0 /**< RGB color space */
46 #define FF_COLOR_GRAY 1 /**< gray color space */
47 #define FF_COLOR_YUV 2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
48 #define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
49
50 #define FF_PIXEL_PLANAR 0 /**< each channel has one component in AVPicture */
51 #define FF_PIXEL_PACKED 1 /**< only one components containing all the channels */
52 #define FF_PIXEL_PALETTE 2 /**< one components containing indexes for a palette */
53
54 typedef struct PixFmtInfo {
55 const char *name;
56 uint8_t nb_channels; /**< number of channels (including alpha) */
57 uint8_t color_type; /**< color type (see FF_COLOR_xxx constants) */
58 uint8_t pixel_type; /**< pixel storage type (see FF_PIXEL_xxx constants) */
59 uint8_t is_alpha : 1; /**< true if alpha can be specified */
60 uint8_t is_hwaccel : 1; /**< true if this is an HW accelerated format */
61 uint8_t x_chroma_shift; /**< X chroma subsampling factor is 2 ^ shift */
62 uint8_t y_chroma_shift; /**< Y chroma subsampling factor is 2 ^ shift */
63 uint8_t depth; /**< bit depth of the color components */
64 } PixFmtInfo;
65
66 /* this table gives more information about formats */
67 static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
68 /* YUV formats */
69 [PIX_FMT_YUV420P] = {
70 .name = "yuv420p",
71 .nb_channels = 3,
72 .color_type = FF_COLOR_YUV,
73 .pixel_type = FF_PIXEL_PLANAR,
74 .depth = 8,
75 .x_chroma_shift = 1, .y_chroma_shift = 1,
76 },
77 [PIX_FMT_YUV422P] = {
78 .name = "yuv422p",
79 .nb_channels = 3,
80 .color_type = FF_COLOR_YUV,
81 .pixel_type = FF_PIXEL_PLANAR,
82 .depth = 8,
83 .x_chroma_shift = 1, .y_chroma_shift = 0,
84 },
85 [PIX_FMT_YUV444P] = {
86 .name = "yuv444p",
87 .nb_channels = 3,
88 .color_type = FF_COLOR_YUV,
89 .pixel_type = FF_PIXEL_PLANAR,
90 .depth = 8,
91 .x_chroma_shift = 0, .y_chroma_shift = 0,
92 },
93 [PIX_FMT_YUYV422] = {
94 .name = "yuyv422",
95 .nb_channels = 1,
96 .color_type = FF_COLOR_YUV,
97 .pixel_type = FF_PIXEL_PACKED,
98 .depth = 8,
99 .x_chroma_shift = 1, .y_chroma_shift = 0,
100 },
101 [PIX_FMT_UYVY422] = {
102 .name = "uyvy422",
103 .nb_channels = 1,
104 .color_type = FF_COLOR_YUV,
105 .pixel_type = FF_PIXEL_PACKED,
106 .depth = 8,
107 .x_chroma_shift = 1, .y_chroma_shift = 0,
108 },
109 [PIX_FMT_YUV410P] = {
110 .name = "yuv410p",
111 .nb_channels = 3,
112 .color_type = FF_COLOR_YUV,
113 .pixel_type = FF_PIXEL_PLANAR,
114 .depth = 8,
115 .x_chroma_shift = 2, .y_chroma_shift = 2,
116 },
117 [PIX_FMT_YUV411P] = {
118 .name = "yuv411p",
119 .nb_channels = 3,
120 .color_type = FF_COLOR_YUV,
121 .pixel_type = FF_PIXEL_PLANAR,
122 .depth = 8,
123 .x_chroma_shift = 2, .y_chroma_shift = 0,
124 },
125 [PIX_FMT_YUV440P] = {
126 .name = "yuv440p",
127 .nb_channels = 3,
128 .color_type = FF_COLOR_YUV,
129 .pixel_type = FF_PIXEL_PLANAR,
130 .depth = 8,
131 .x_chroma_shift = 0, .y_chroma_shift = 1,
132 },
133 [PIX_FMT_YUV420PLE] = {
134 .name = "yuv420ple",
135 .nb_channels = 3,
136 .color_type = FF_COLOR_YUV,
137 .pixel_type = FF_PIXEL_PLANAR,
138 .depth = 16,
139 .x_chroma_shift = 1, .y_chroma_shift = 1,
140 },
141 [PIX_FMT_YUV422PLE] = {
142 .name = "yuv422ple",
143 .nb_channels = 3,
144 .color_type = FF_COLOR_YUV,
145 .pixel_type = FF_PIXEL_PLANAR,
146 .depth = 16,
147 .x_chroma_shift = 1, .y_chroma_shift = 0,
148 },
149 [PIX_FMT_YUV444PLE] = {
150 .name = "yuv444ple",
151 .nb_channels = 3,
152 .color_type = FF_COLOR_YUV,
153 .pixel_type = FF_PIXEL_PLANAR,
154 .depth = 16,
155 .x_chroma_shift = 0, .y_chroma_shift = 0,
156 },
157 [PIX_FMT_YUV420PBE] = {
158 .name = "yuv420pbe",
159 .nb_channels = 3,
160 .color_type = FF_COLOR_YUV,
161 .pixel_type = FF_PIXEL_PLANAR,
162 .depth = 16,
163 .x_chroma_shift = 1, .y_chroma_shift = 1,
164 },
165 [PIX_FMT_YUV422PBE] = {
166 .name = "yuv422pbe",
167 .nb_channels = 3,
168 .color_type = FF_COLOR_YUV,
169 .pixel_type = FF_PIXEL_PLANAR,
170 .depth = 16,
171 .x_chroma_shift = 1, .y_chroma_shift = 0,
172 },
173 [PIX_FMT_YUV444PBE] = {
174 .name = "yuv444pbe",
175 .nb_channels = 3,
176 .color_type = FF_COLOR_YUV,
177 .pixel_type = FF_PIXEL_PLANAR,
178 .depth = 16,
179 .x_chroma_shift = 0, .y_chroma_shift = 0,
180 },
181
182
183 /* YUV formats with alpha plane */
184 [PIX_FMT_YUVA420P] = {
185 .name = "yuva420p",
186 .nb_channels = 4,
187 .color_type = FF_COLOR_YUV,
188 .pixel_type = FF_PIXEL_PLANAR,
189 .depth = 8,
190 .x_chroma_shift = 1, .y_chroma_shift = 1,
191 },
192
193 /* JPEG YUV */
194 [PIX_FMT_YUVJ420P] = {
195 .name = "yuvj420p",
196 .nb_channels = 3,
197 .color_type = FF_COLOR_YUV_JPEG,
198 .pixel_type = FF_PIXEL_PLANAR,
199 .depth = 8,
200 .x_chroma_shift = 1, .y_chroma_shift = 1,
201 },
202 [PIX_FMT_YUVJ422P] = {
203 .name = "yuvj422p",
204 .nb_channels = 3,
205 .color_type = FF_COLOR_YUV_JPEG,
206 .pixel_type = FF_PIXEL_PLANAR,
207 .depth = 8,
208 .x_chroma_shift = 1, .y_chroma_shift = 0,
209 },
210 [PIX_FMT_YUVJ444P] = {
211 .name = "yuvj444p",
212 .nb_channels = 3,
213 .color_type = FF_COLOR_YUV_JPEG,
214 .pixel_type = FF_PIXEL_PLANAR,
215 .depth = 8,
216 .x_chroma_shift = 0, .y_chroma_shift = 0,
217 },
218 [PIX_FMT_YUVJ440P] = {
219 .name = "yuvj440p",
220 .nb_channels = 3,
221 .color_type = FF_COLOR_YUV_JPEG,
222 .pixel_type = FF_PIXEL_PLANAR,
223 .depth = 8,
224 .x_chroma_shift = 0, .y_chroma_shift = 1,
225 },
226
227 /* RGB formats */
228 [PIX_FMT_RGB24] = {
229 .name = "rgb24",
230 .nb_channels = 3,
231 .color_type = FF_COLOR_RGB,
232 .pixel_type = FF_PIXEL_PACKED,
233 .depth = 8,
234 .x_chroma_shift = 0, .y_chroma_shift = 0,
235 },
236 [PIX_FMT_BGR24] = {
237 .name = "bgr24",
238 .nb_channels = 3,
239 .color_type = FF_COLOR_RGB,
240 .pixel_type = FF_PIXEL_PACKED,
241 .depth = 8,
242 .x_chroma_shift = 0, .y_chroma_shift = 0,
243 },
244 [PIX_FMT_ARGB] = {
245 .name = "argb",
246 .nb_channels = 4, .is_alpha = 1,
247 .color_type = FF_COLOR_RGB,
248 .pixel_type = FF_PIXEL_PACKED,
249 .depth = 8,
250 .x_chroma_shift = 0, .y_chroma_shift = 0,
251 },
252 [PIX_FMT_RGB48BE] = {
253 .name = "rgb48be",
254 .nb_channels = 3,
255 .color_type = FF_COLOR_RGB,
256 .pixel_type = FF_PIXEL_PACKED,
257 .depth = 16,
258 .x_chroma_shift = 0, .y_chroma_shift = 0,
259 },
260 [PIX_FMT_RGB48LE] = {
261 .name = "rgb48le",
262 .nb_channels = 3,
263 .color_type = FF_COLOR_RGB,
264 .pixel_type = FF_PIXEL_PACKED,
265 .depth = 16,
266 .x_chroma_shift = 0, .y_chroma_shift = 0,
267 },
268 [PIX_FMT_RGB565BE] = {
269 .name = "rgb565be",
270 .nb_channels = 3,
271 .color_type = FF_COLOR_RGB,
272 .pixel_type = FF_PIXEL_PACKED,
273 .depth = 5,
274 .x_chroma_shift = 0, .y_chroma_shift = 0,
275 },
276 [PIX_FMT_RGB565LE] = {
277 .name = "rgb565le",
278 .nb_channels = 3,
279 .color_type = FF_COLOR_RGB,
280 .pixel_type = FF_PIXEL_PACKED,
281 .depth = 5,
282 .x_chroma_shift = 0, .y_chroma_shift = 0,
283 },
284 [PIX_FMT_RGB555BE] = {
285 .name = "rgb555be",
286 .nb_channels = 3,
287 .color_type = FF_COLOR_RGB,
288 .pixel_type = FF_PIXEL_PACKED,
289 .depth = 5,
290 .x_chroma_shift = 0, .y_chroma_shift = 0,
291 },
292 [PIX_FMT_RGB555LE] = {
293 .name = "rgb555le",
294 .nb_channels = 3,
295 .color_type = FF_COLOR_RGB,
296 .pixel_type = FF_PIXEL_PACKED,
297 .depth = 5,
298 .x_chroma_shift = 0, .y_chroma_shift = 0,
299 },
300
301 /* gray / mono formats */
302 [PIX_FMT_GRAY16BE] = {
303 .name = "gray16be",
304 .nb_channels = 1,
305 .color_type = FF_COLOR_GRAY,
306 .pixel_type = FF_PIXEL_PLANAR,
307 .depth = 16,
308 },
309 [PIX_FMT_GRAY16LE] = {
310 .name = "gray16le",
311 .nb_channels = 1,
312 .color_type = FF_COLOR_GRAY,
313 .pixel_type = FF_PIXEL_PLANAR,
314 .depth = 16,
315 },
316 [PIX_FMT_GRAY8] = {
317 .name = "gray",
318 .nb_channels = 1,
319 .color_type = FF_COLOR_GRAY,
320 .pixel_type = FF_PIXEL_PLANAR,
321 .depth = 8,
322 },
323 [PIX_FMT_MONOWHITE] = {
324 .name = "monow",
325 .nb_channels = 1,
326 .color_type = FF_COLOR_GRAY,
327 .pixel_type = FF_PIXEL_PLANAR,
328 .depth = 1,
329 },
330 [PIX_FMT_MONOBLACK] = {
331 .name = "monob",
332 .nb_channels = 1,
333 .color_type = FF_COLOR_GRAY,
334 .pixel_type = FF_PIXEL_PLANAR,
335 .depth = 1,
336 },
337
338 /* paletted formats */
339 [PIX_FMT_PAL8] = {
340 .name = "pal8",
341 .nb_channels = 4, .is_alpha = 1,
342 .color_type = FF_COLOR_RGB,
343 .pixel_type = FF_PIXEL_PALETTE,
344 .depth = 8,
345 },
346 [PIX_FMT_XVMC_MPEG2_MC] = {
347 .name = "xvmcmc",
348 .is_hwaccel = 1,
349 },
350 [PIX_FMT_XVMC_MPEG2_IDCT] = {
351 .name = "xvmcidct",
352 .is_hwaccel = 1,
353 },
354 [PIX_FMT_VDPAU_MPEG1] = {
355 .name = "vdpau_mpeg1",
356 .is_hwaccel = 1,
357 .x_chroma_shift = 1, .y_chroma_shift = 1,
358 },
359 [PIX_FMT_VDPAU_MPEG2] = {
360 .name = "vdpau_mpeg2",
361 .is_hwaccel = 1,
362 .x_chroma_shift = 1, .y_chroma_shift = 1,
363 },
364 [PIX_FMT_VDPAU_H264] = {
365 .name = "vdpau_h264",
366 .is_hwaccel = 1,
367 .x_chroma_shift = 1, .y_chroma_shift = 1,
368 },
369 [PIX_FMT_VDPAU_WMV3] = {
370 .name = "vdpau_wmv3",
371 .is_hwaccel = 1,
372 .x_chroma_shift = 1, .y_chroma_shift = 1,
373 },
374 [PIX_FMT_VDPAU_VC1] = {
375 .name = "vdpau_vc1",
376 .is_hwaccel = 1,
377 .x_chroma_shift = 1, .y_chroma_shift = 1,
378 },
379 [PIX_FMT_UYYVYY411] = {
380 .name = "uyyvyy411",
381 .nb_channels = 1,
382 .color_type = FF_COLOR_YUV,
383 .pixel_type = FF_PIXEL_PACKED,
384 .depth = 8,
385 .x_chroma_shift = 2, .y_chroma_shift = 0,
386 },
387 [PIX_FMT_ABGR] = {
388 .name = "abgr",
389 .nb_channels = 4, .is_alpha = 1,
390 .color_type = FF_COLOR_RGB,
391 .pixel_type = FF_PIXEL_PACKED,
392 .depth = 8,
393 .x_chroma_shift = 0, .y_chroma_shift = 0,
394 },
395 [PIX_FMT_BGR565BE] = {
396 .name = "bgr565be",
397 .nb_channels = 3,
398 .color_type = FF_COLOR_RGB,
399 .pixel_type = FF_PIXEL_PACKED,
400 .depth = 5,
401 .x_chroma_shift = 0, .y_chroma_shift = 0,
402 },
403 [PIX_FMT_BGR565LE] = {
404 .name = "bgr565le",
405 .nb_channels = 3,
406 .color_type = FF_COLOR_RGB,
407 .pixel_type = FF_PIXEL_PACKED,
408 .depth = 5,
409 .x_chroma_shift = 0, .y_chroma_shift = 0,
410 },
411 [PIX_FMT_BGR555BE] = {
412 .name = "bgr555be",
413 .nb_channels = 3,
414 .color_type = FF_COLOR_RGB,
415 .pixel_type = FF_PIXEL_PACKED,
416 .depth = 5,
417 .x_chroma_shift = 0, .y_chroma_shift = 0,
418 },
419 [PIX_FMT_BGR555LE] = {
420 .name = "bgr555le",
421 .nb_channels = 3,
422 .color_type = FF_COLOR_RGB,
423 .pixel_type = FF_PIXEL_PACKED,
424 .depth = 5,
425 .x_chroma_shift = 0, .y_chroma_shift = 0,
426 },
427 [PIX_FMT_RGB8] = {
428 .name = "rgb8",
429 .nb_channels = 1,
430 .color_type = FF_COLOR_RGB,
431 .pixel_type = FF_PIXEL_PACKED,
432 .depth = 8,
433 .x_chroma_shift = 0, .y_chroma_shift = 0,
434 },
435 [PIX_FMT_RGB4] = {
436 .name = "rgb4",
437 .nb_channels = 1,
438 .color_type = FF_COLOR_RGB,
439 .pixel_type = FF_PIXEL_PACKED,
440 .depth = 4,
441 .x_chroma_shift = 0, .y_chroma_shift = 0,
442 },
443 [PIX_FMT_RGB4_BYTE] = {
444 .name = "rgb4_byte",
445 .nb_channels = 1,
446 .color_type = FF_COLOR_RGB,
447 .pixel_type = FF_PIXEL_PACKED,
448 .depth = 8,
449 .x_chroma_shift = 0, .y_chroma_shift = 0,
450 },
451 [PIX_FMT_BGR8] = {
452 .name = "bgr8",
453 .nb_channels = 1,
454 .color_type = FF_COLOR_RGB,
455 .pixel_type = FF_PIXEL_PACKED,
456 .depth = 8,
457 .x_chroma_shift = 0, .y_chroma_shift = 0,
458 },
459 [PIX_FMT_BGR4] = {
460 .name = "bgr4",
461 .nb_channels = 1,
462 .color_type = FF_COLOR_RGB,
463 .pixel_type = FF_PIXEL_PACKED,
464 .depth = 4,
465 .x_chroma_shift = 0, .y_chroma_shift = 0,
466 },
467 [PIX_FMT_BGR4_BYTE] = {
468 .name = "bgr4_byte",
469 .nb_channels = 1,
470 .color_type = FF_COLOR_RGB,
471 .pixel_type = FF_PIXEL_PACKED,
472 .depth = 8,
473 .x_chroma_shift = 0, .y_chroma_shift = 0,
474 },
475 [PIX_FMT_NV12] = {
476 .name = "nv12",
477 .nb_channels = 2,
478 .color_type = FF_COLOR_YUV,
479 .pixel_type = FF_PIXEL_PLANAR,
480 .depth = 8,
481 .x_chroma_shift = 1, .y_chroma_shift = 1,
482 },
483 [PIX_FMT_NV21] = {
484 .name = "nv12",
485 .nb_channels = 2,
486 .color_type = FF_COLOR_YUV,
487 .pixel_type = FF_PIXEL_PLANAR,
488 .depth = 8,
489 .x_chroma_shift = 1, .y_chroma_shift = 1,
490 },
491
492 [PIX_FMT_BGRA] = {
493 .name = "bgra",
494 .nb_channels = 4, .is_alpha = 1,
495 .color_type = FF_COLOR_RGB,
496 .pixel_type = FF_PIXEL_PACKED,
497 .depth = 8,
498 .x_chroma_shift = 0, .y_chroma_shift = 0,
499 },
500 [PIX_FMT_RGBA] = {
501 .name = "rgba",
502 .nb_channels = 4, .is_alpha = 1,
503 .color_type = FF_COLOR_RGB,
504 .pixel_type = FF_PIXEL_PACKED,
505 .depth = 8,
506 .x_chroma_shift = 0, .y_chroma_shift = 0,
507 },
508
509 /* VA API formats */
510 [PIX_FMT_VAAPI_MOCO] = {
511 .name = "vaapi_moco",
512 .is_hwaccel = 1,
513 .x_chroma_shift = 1, .y_chroma_shift = 1,
514 },
515 [PIX_FMT_VAAPI_IDCT] = {
516 .name = "vaapi_idct",
517 .is_hwaccel = 1,
518 .x_chroma_shift = 1, .y_chroma_shift = 1,
519 },
520 [PIX_FMT_VAAPI_VLD] = {
521 .name = "vaapi_vld",
522 .is_hwaccel = 1,
523 .x_chroma_shift = 1, .y_chroma_shift = 1,
524 },
525 };
526
527 void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
528 {
529 *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
530 *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
531 }
532
533 const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
534 {
535 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
536 return NULL;
537 else
538 return pix_fmt_info[pix_fmt].name;
539 }
540
541 static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
542 {
543 int i;
544
545 for (i=0; i < PIX_FMT_NB; i++)
546 if (pix_fmt_info[i].name && !strcmp(pix_fmt_info[i].name, name))
547 return i;
548 return PIX_FMT_NONE;
549 }
550
551 #if HAVE_BIGENDIAN
552 # define X_NE(be, le) be
553 #else
554 # define X_NE(be, le) le
555 #endif
556
557 enum PixelFormat avcodec_get_pix_fmt(const char *name)
558 {
559 enum PixelFormat pix_fmt;
560
561 if (!strcmp(name, "rgb32"))
562 name = X_NE("argb", "bgra");
563 else if (!strcmp(name, "bgr32"))
564 name = X_NE("abgr", "rgba");
565
566 pix_fmt = avcodec_get_pix_fmt_internal(name);
567 if (pix_fmt == PIX_FMT_NONE) {
568 char name2[32];
569 snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
570 pix_fmt = avcodec_get_pix_fmt_internal(name2);
571 }
572 return pix_fmt;
573 }
574
575 void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
576 {
577 /* print header */
578 if (pix_fmt < 0)
579 snprintf (buf, buf_size,
580 "name " " nb_channels" " depth" " is_alpha"
581 );
582 else{
583 PixFmtInfo info= pix_fmt_info[pix_fmt];
584
585 char is_alpha_char= info.is_alpha ? 'y' : 'n';
586
587 snprintf (buf, buf_size,
588 "%-10s" " %1d " " %2d " " %c ",
589 info.name,
590 info.nb_channels,
591 info.depth,
592 is_alpha_char
593 );
594 }
595 }
596
597 int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
598 {
599 return pix_fmt_info[pix_fmt].is_hwaccel;
600 }
601
602 int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
603 int i;
604
605 for(i=0; i<256; i++){
606 int r,g,b;
607
608 switch(pix_fmt) {
609 case PIX_FMT_RGB8:
610 r= (i>>5 )*36;
611 g= ((i>>2)&7)*36;
612 b= (i&3 )*85;
613 break;
614 case PIX_FMT_BGR8:
615 b= (i>>6 )*85;
616 g= ((i>>3)&7)*36;
617 r= (i&7 )*36;
618 break;
619 case PIX_FMT_RGB4_BYTE:
620 r= (i>>3 )*255;
621 g= ((i>>1)&3)*85;
622 b= (i&1 )*255;
623 break;
624 case PIX_FMT_BGR4_BYTE:
625 b= (i>>3 )*255;
626 g= ((i>>1)&3)*85;
627 r= (i&1 )*255;
628 break;
629 case PIX_FMT_GRAY8:
630 r=b=g= i;
631 break;
632 default:
633 return -1;
634 }
635 pal[i] = b + (g<<8) + (r<<16);
636 }
637
638 return 0;
639 }
640
641 int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
642 {
643 int w2;
644 const PixFmtInfo *pinfo;
645
646 memset(picture->linesize, 0, sizeof(picture->linesize));
647
648 pinfo = &pix_fmt_info[pix_fmt];
649 switch(pix_fmt) {
650 case PIX_FMT_YUV420P:
651 case PIX_FMT_YUV422P:
652 case PIX_FMT_YUV444P:
653 case PIX_FMT_YUV410P:
654 case PIX_FMT_YUV411P:
655 case PIX_FMT_YUV440P:
656 case PIX_FMT_YUVJ420P:
657 case PIX_FMT_YUVJ422P:
658 case PIX_FMT_YUVJ444P:
659 case PIX_FMT_YUVJ440P:
660 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
661 picture->linesize[0] = width;
662 picture->linesize[1] = w2;
663 picture->linesize[2] = w2;
664 break;
665 case PIX_FMT_YUV420PLE:
666 case PIX_FMT_YUV422PLE:
667 case PIX_FMT_YUV444PLE:
668 case PIX_FMT_YUV420PBE:
669 case PIX_FMT_YUV422PBE:
670 case PIX_FMT_YUV444PBE:
671 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
672 picture->linesize[0] = 2*width;
673 picture->linesize[1] = 2*w2;
674 picture->linesize[2] = 2*w2;
675 break;
676 case PIX_FMT_YUVA420P:
677 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
678 picture->linesize[0] = width;
679 picture->linesize[1] = w2;
680 picture->linesize[2] = w2;
681 picture->linesize[3] = width;
682 break;
683 case PIX_FMT_NV12:
684 case PIX_FMT_NV21:
685 w2 = (width + (1 << pinfo->x_chroma_shift) - 1) >> pinfo->x_chroma_shift;
686 picture->linesize[0] = width;
687 picture->linesize[1] = w2;
688 break;
689 case PIX_FMT_RGB24:
690 case PIX_FMT_BGR24:
691 picture->linesize[0] = width * 3;
692 break;
693 case PIX_FMT_ARGB:
694 case PIX_FMT_ABGR:
695 case PIX_FMT_RGBA:
696 case PIX_FMT_BGRA:
697 picture->linesize[0] = width * 4;
698 break;
699 case PIX_FMT_RGB48BE:
700 case PIX_FMT_RGB48LE:
701 picture->linesize[0] = width * 6;
702 break;
703 case PIX_FMT_GRAY16BE:
704 case PIX_FMT_GRAY16LE:
705 case PIX_FMT_BGR555:
706 case PIX_FMT_BGR565:
707 case PIX_FMT_RGB555:
708 case PIX_FMT_RGB565:
709 case PIX_FMT_YUYV422:
710 picture->linesize[0] = width * 2;
711 break;
712 case PIX_FMT_UYVY422:
713 picture->linesize[0] = width * 2;
714 break;
715 case PIX_FMT_UYYVYY411:
716 picture->linesize[0] = width + width/2;
717 break;
718 case PIX_FMT_RGB4:
719 case PIX_FMT_BGR4:
720 picture->linesize[0] = width / 2;
721 break;
722 case PIX_FMT_MONOWHITE:
723 case PIX_FMT_MONOBLACK:
724 picture->linesize[0] = (width + 7) >> 3;
725 break;
726 case PIX_FMT_PAL8:
727 case PIX_FMT_RGB8:
728 case PIX_FMT_BGR8:
729 case PIX_FMT_RGB4_BYTE:
730 case PIX_FMT_BGR4_BYTE:
731 case PIX_FMT_GRAY8:
732 picture->linesize[0] = width;
733 break;
734 default:
735 return -1;
736 }
737 return 0;
738 }
739
740 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
741 int height)
742 {
743 int size, h2, size2;
744 const PixFmtInfo *pinfo;
745
746 pinfo = &pix_fmt_info[pix_fmt];
747 size = picture->linesize[0] * height;
748 switch(pix_fmt) {
749 case PIX_FMT_YUV420P:
750 case PIX_FMT_YUV422P:
751 case PIX_FMT_YUV444P:
752 case PIX_FMT_YUV410P:
753 case PIX_FMT_YUV411P:
754 case PIX_FMT_YUV440P:
755 case PIX_FMT_YUVJ420P:
756 case PIX_FMT_YUVJ422P:
757 case PIX_FMT_YUVJ444P:
758 case PIX_FMT_YUVJ440P:
759 case PIX_FMT_YUV420PLE:
760 case PIX_FMT_YUV422PLE:
761 case PIX_FMT_YUV444PLE:
762 case PIX_FMT_YUV420PBE:
763 case PIX_FMT_YUV422PBE:
764 case PIX_FMT_YUV444PBE:
765 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
766 size2 = picture->linesize[1] * h2;
767 picture->data[0] = ptr;
768 picture->data[1] = picture->data[0] + size;
769 picture->data[2] = picture->data[1] + size2;
770 picture->data[3] = NULL;
771 return size + 2 * size2;
772 case PIX_FMT_YUVA420P:
773 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
774 size2 = picture->linesize[1] * h2;
775 picture->data[0] = ptr;
776 picture->data[1] = picture->data[0] + size;
777 picture->data[2] = picture->data[1] + size2;
778 picture->data[3] = picture->data[1] + size2 + size2;
779 return 2 * size + 2 * size2;
780 case PIX_FMT_NV12:
781 case PIX_FMT_NV21:
782 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
783 size2 = picture->linesize[1] * h2 * 2;
784 picture->data[0] = ptr;
785 picture->data[1] = picture->data[0] + size;
786 picture->data[2] = NULL;
787 picture->data[3] = NULL;
788 return size + 2 * size2;
789 case PIX_FMT_RGB24:
790 case PIX_FMT_BGR24:
791 case PIX_FMT_ARGB:
792 case PIX_FMT_ABGR:
793 case PIX_FMT_RGBA:
794 case PIX_FMT_BGRA:
795 case PIX_FMT_RGB48BE:
796 case PIX_FMT_RGB48LE:
797 case PIX_FMT_GRAY16BE:
798 case PIX_FMT_GRAY16LE:
799 case PIX_FMT_BGR555:
800 case PIX_FMT_BGR565:
801 case PIX_FMT_RGB555:
802 case PIX_FMT_RGB565:
803 case PIX_FMT_YUYV422:
804 case PIX_FMT_UYVY422:
805 case PIX_FMT_UYYVYY411:
806 case PIX_FMT_RGB4:
807 case PIX_FMT_BGR4:
808 case PIX_FMT_MONOWHITE:
809 case PIX_FMT_MONOBLACK:
810 picture->data[0] = ptr;
811 picture->data[1] = NULL;
812 picture->data[2] = NULL;
813 picture->data[3] = NULL;
814 return size;
815 case PIX_FMT_PAL8:
816 case PIX_FMT_RGB8:
817 case PIX_FMT_BGR8:
818 case PIX_FMT_RGB4_BYTE:
819 case PIX_FMT_BGR4_BYTE:
820 case PIX_FMT_GRAY8:
821 size2 = (size + 3) & ~3;
822 picture->data[0] = ptr;
823 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
824 picture->data[2] = NULL;
825 picture->data[3] = NULL;
826 return size2 + 256 * 4;
827 default:
828 picture->data[0] = NULL;
829 picture->data[1] = NULL;
830 picture->data[2] = NULL;
831 picture->data[3] = NULL;
832 return -1;
833 }
834 }
835
836 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
837 enum PixelFormat pix_fmt, int width, int height)
838 {
839
840 if(avcodec_check_dimensions(NULL, width, height))
841 return -1;
842
843 if (ff_fill_linesize(picture, pix_fmt, width))
844 return -1;
845
846 return ff_fill_pointer(picture, ptr, pix_fmt, height);
847 }
848
849 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
850 unsigned char *dest, int dest_size)
851 {
852 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
853 int i, j, w, ow, h, oh, data_planes;
854 const unsigned char* s;
855 int size = avpicture_get_size(pix_fmt, width, height);
856
857 if (size > dest_size || size < 0)
858 return -1;
859
860 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
861 if (pix_fmt == PIX_FMT_YUYV422 ||
862 pix_fmt == PIX_FMT_UYVY422 ||
863 pix_fmt == PIX_FMT_BGR565 ||
864 pix_fmt == PIX_FMT_BGR555 ||
865 pix_fmt == PIX_FMT_RGB565 ||
866 pix_fmt == PIX_FMT_RGB555)
867 w = width * 2;
868 else if (pix_fmt == PIX_FMT_UYYVYY411)
869 w = width + width/2;
870 else if (pix_fmt == PIX_FMT_PAL8)
871 w = width;
872 else
873 w = width * (pf->depth * pf->nb_channels / 8);
874
875 data_planes = 1;
876 h = height;
877 } else {
878 data_planes = pf->nb_channels;
879 w = (width*pf->depth + 7)/8;
880 h = height;
881 }
882
883 ow = w;
884 oh = h;
885
886 for (i=0; i<data_planes; i++) {
887 if (i == 1) {
888 w = width >> pf->x_chroma_shift;
889 h = height >> pf->y_chroma_shift;
890 } else if (i == 3) {
891 w = ow;
892 h = oh;
893 }
894 s = src->data[i];
895 for(j=0; j<h; j++) {
896 memcpy(dest, s, w);
897 dest += w;
898 s += src->linesize[i];
899 }
900 }
901
902 if (pf->pixel_type == FF_PIXEL_PALETTE)
903 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
904
905 return size;
906 }
907
908 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
909 {
910 AVPicture dummy_pict;
911 if(avcodec_check_dimensions(NULL, width, height))
912 return -1;
913 switch (pix_fmt) {
914 case PIX_FMT_RGB8:
915 case PIX_FMT_BGR8:
916 case PIX_FMT_RGB4_BYTE:
917 case PIX_FMT_BGR4_BYTE:
918 case PIX_FMT_GRAY8:
919 // do not include palette for these pseudo-paletted formats
920 return width * height;
921 }
922 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
923 }
924
925 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
926 int has_alpha)
927 {
928 const PixFmtInfo *pf, *ps;
929 int loss;
930
931 ps = &pix_fmt_info[src_pix_fmt];
932
933 /* compute loss */
934 loss = 0;
935 pf = &pix_fmt_info[dst_pix_fmt];
936 if (pf->depth < ps->depth ||
937 (dst_pix_fmt == PIX_FMT_RGB555 && src_pix_fmt == PIX_FMT_RGB565))
938 loss |= FF_LOSS_DEPTH;
939 if (pf->x_chroma_shift > ps->x_chroma_shift ||
940 pf->y_chroma_shift > ps->y_chroma_shift)
941 loss |= FF_LOSS_RESOLUTION;
942 switch(pf->color_type) {
943 case FF_COLOR_RGB:
944 if (ps->color_type != FF_COLOR_RGB &&
945 ps->color_type != FF_COLOR_GRAY)
946 loss |= FF_LOSS_COLORSPACE;
947 break;
948 case FF_COLOR_GRAY:
949 if (ps->color_type != FF_COLOR_GRAY)
950 loss |= FF_LOSS_COLORSPACE;
951 break;
952 case FF_COLOR_YUV:
953 if (ps->color_type != FF_COLOR_YUV)
954 loss |= FF_LOSS_COLORSPACE;
955 break;
956 case FF_COLOR_YUV_JPEG:
957 if (ps->color_type != FF_COLOR_YUV_JPEG &&
958 ps->color_type != FF_COLOR_YUV &&
959 ps->color_type != FF_COLOR_GRAY)
960 loss |= FF_LOSS_COLORSPACE;
961 break;
962 default:
963 /* fail safe test */
964 if (ps->color_type != pf->color_type)
965 loss |= FF_LOSS_COLORSPACE;
966 break;
967 }
968 if (pf->color_type == FF_COLOR_GRAY &&
969 ps->color_type != FF_COLOR_GRAY)
970 loss |= FF_LOSS_CHROMA;
971 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
972 loss |= FF_LOSS_ALPHA;
973 if (pf->pixel_type == FF_PIXEL_PALETTE &&
974 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
975 loss |= FF_LOSS_COLORQUANT;
976 return loss;
977 }
978
979 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
980 {
981 int bits;
982 const PixFmtInfo *pf;
983
984 pf = &pix_fmt_info[pix_fmt];
985 switch(pf->pixel_type) {
986 case FF_PIXEL_PACKED:
987 switch(pix_fmt) {
988 case PIX_FMT_YUYV422:
989 case PIX_FMT_UYVY422:
990 case PIX_FMT_RGB565:
991 case PIX_FMT_RGB555:
992 case PIX_FMT_BGR565:
993 case PIX_FMT_BGR555:
994 bits = 16;
995 break;
996 case PIX_FMT_UYYVYY411:
997 bits = 12;
998 break;
999 default:
1000 bits = pf->depth * pf->nb_channels;
1001 break;
1002 }
1003 break;
1004 case FF_PIXEL_PLANAR:
1005 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
1006 bits = pf->depth * pf->nb_channels;
1007 } else {
1008 bits = pf->depth + ((2 * pf->depth) >>
1009 (pf->x_chroma_shift + pf->y_chroma_shift));
1010 }
1011 break;
1012 case FF_PIXEL_PALETTE:
1013 bits = 8;
1014 break;
1015 default:
1016 bits = -1;
1017 break;
1018 }
1019 return bits;
1020 }
1021
1022 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
1023 enum PixelFormat src_pix_fmt,
1024 int has_alpha,
1025 int loss_mask)
1026 {
1027 int dist, i, loss, min_dist;
1028 enum PixelFormat dst_pix_fmt;
1029
1030 /* find exact color match with smallest size */
1031 dst_pix_fmt = -1;
1032 min_dist = 0x7fffffff;
1033 for(i = 0;i < PIX_FMT_NB; i++) {
1034 if (pix_fmt_mask & (1ULL << i)) {
1035 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
1036 if (loss == 0) {
1037 dist = avg_bits_per_pixel(i);
1038 if (dist < min_dist) {
1039 min_dist = dist;
1040 dst_pix_fmt = i;
1041 }
1042 }
1043 }
1044 }
1045 return dst_pix_fmt;
1046 }
1047
1048 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
1049 int has_alpha, int *loss_ptr)
1050 {
1051 enum PixelFormat dst_pix_fmt;
1052 int loss_mask, i;
1053 static const int loss_mask_order[] = {
1054 ~0, /* no loss first */
1055 ~FF_LOSS_ALPHA,
1056 ~FF_LOSS_RESOLUTION,
1057 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
1058 ~FF_LOSS_COLORQUANT,
1059 ~FF_LOSS_DEPTH,
1060 0,
1061 };
1062
1063 /* try with successive loss */
1064 i = 0;
1065 for(;;) {
1066 loss_mask = loss_mask_order[i++];
1067 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
1068 has_alpha, loss_mask);
1069 if (dst_pix_fmt >= 0)
1070 goto found;
1071 if (loss_mask == 0)
1072 break;
1073 }
1074 return -1;
1075 found:
1076 if (loss_ptr)
1077 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
1078 return dst_pix_fmt;
1079 }
1080
1081 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
1082 const uint8_t *src, int src_wrap,
1083 int width, int height)
1084 {
1085 if((!dst) || (!src))
1086 return;
1087 for(;height > 0; height--) {
1088 memcpy(dst, src, width);
1089 dst += dst_wrap;
1090 src += src_wrap;
1091 }
1092 }
1093
1094 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
1095 {
1096 int bits;
1097 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1098
1099 pf = &pix_fmt_info[pix_fmt];
1100 switch(pf->pixel_type) {
1101 case FF_PIXEL_PACKED:
1102 switch(pix_fmt) {
1103 case PIX_FMT_YUYV422:
1104 case PIX_FMT_UYVY422:
1105 case PIX_FMT_RGB565:
1106 case PIX_FMT_RGB555:
1107 case PIX_FMT_BGR565:
1108 case PIX_FMT_BGR555:
1109 bits = 16;
1110 break;
1111 case PIX_FMT_UYYVYY411:
1112 bits = 12;
1113 break;
1114 default:
1115 bits = pf->depth * pf->nb_channels;
1116 break;
1117 }
1118 return (width * bits + 7) >> 3;
1119 break;
1120 case FF_PIXEL_PLANAR:
1121 if (plane == 1 || plane == 2)
1122 width= -((-width)>>pf->x_chroma_shift);
1123
1124 return (width * pf->depth + 7) >> 3;
1125 break;
1126 case FF_PIXEL_PALETTE:
1127 if (plane == 0)
1128 return width;
1129 break;
1130 }
1131
1132 return -1;
1133 }
1134
1135 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1136 enum PixelFormat pix_fmt, int width, int height)
1137 {
1138 int i;
1139 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1140
1141 switch(pf->pixel_type) {
1142 case FF_PIXEL_PACKED:
1143 case FF_PIXEL_PLANAR:
1144 for(i = 0; i < pf->nb_channels; i++) {
1145 int h;
1146 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1147 h = height;
1148 if (i == 1 || i == 2) {
1149 h= -((-height)>>pf->y_chroma_shift);
1150 }
1151 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1152 src->data[i], src->linesize[i],
1153 bwidth, h);
1154 }
1155 break;
1156 case FF_PIXEL_PALETTE:
1157 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1158 src->data[0], src->linesize[0],
1159 width, height);
1160 /* copy the palette */
1161 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1162 src->data[1], src->linesize[1],
1163 4, 256);
1164 break;
1165 }
1166 }
1167
1168 /* 2x2 -> 1x1 */
1169 void ff_shrink22(uint8_t *dst, int dst_wrap,
1170 const uint8_t *src, int src_wrap,
1171 int width, int height)
1172 {
1173 int w;
1174 const uint8_t *s1, *s2;
1175 uint8_t *d;
1176
1177 for(;height > 0; height--) {
1178 s1 = src;
1179 s2 = s1 + src_wrap;
1180 d = dst;
1181 for(w = width;w >= 4; w-=4) {
1182 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1183 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1184 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1185 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1186 s1 += 8;
1187 s2 += 8;
1188 d += 4;
1189 }
1190 for(;w > 0; w--) {
1191 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1192 s1 += 2;
1193 s2 += 2;
1194 d++;
1195 }
1196 src += 2 * src_wrap;
1197 dst += dst_wrap;
1198 }
1199 }
1200
1201 /* 4x4 -> 1x1 */
1202 void ff_shrink44(uint8_t *dst, int dst_wrap,
1203 const uint8_t *src, int src_wrap,
1204 int width, int height)
1205 {
1206 int w;
1207 const uint8_t *s1, *s2, *s3, *s4;
1208 uint8_t *d;
1209
1210 for(;height > 0; height--) {
1211 s1 = src;
1212 s2 = s1 + src_wrap;
1213 s3 = s2 + src_wrap;
1214 s4 = s3 + src_wrap;
1215 d = dst;
1216 for(w = width;w > 0; w--) {
1217 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1218 s2[0] + s2[1] + s2[2] + s2[3] +
1219 s3[0] + s3[1] + s3[2] + s3[3] +
1220 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1221 s1 += 4;
1222 s2 += 4;
1223 s3 += 4;
1224 s4 += 4;
1225 d++;
1226 }
1227 src += 4 * src_wrap;
1228 dst += dst_wrap;
1229 }
1230 }
1231
1232 /* 8x8 -> 1x1 */
1233 void ff_shrink88(uint8_t *dst, int dst_wrap,
1234 const uint8_t *src, int src_wrap,
1235 int width, int height)
1236 {
1237 int w, i;
1238
1239 for(;height > 0; height--) {
1240 for(w = width;w > 0; w--) {
1241 int tmp=0;
1242 for(i=0; i<8; i++){
1243 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1244 src += src_wrap;
1245 }
1246 *(dst++) = (tmp + 32)>>6;
1247 src += 8 - 8*src_wrap;
1248 }
1249 src += 8*src_wrap - 8*width;
1250 dst += dst_wrap - width;
1251 }
1252 }
1253
1254
1255 int avpicture_alloc(AVPicture *picture,
1256 enum PixelFormat pix_fmt, int width, int height)
1257 {
1258 int size;
1259 void *ptr;
1260
1261 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1262 if(size<0)
1263 goto fail;
1264 ptr = av_malloc(size);
1265 if (!ptr)
1266 goto fail;
1267 avpicture_fill(picture, ptr, pix_fmt, width, height);
1268 if(picture->data[1] && !picture->data[2])
1269 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1270
1271 return 0;
1272 fail:
1273 memset(picture, 0, sizeof(AVPicture));
1274 return -1;
1275 }
1276
1277 void avpicture_free(AVPicture *picture)
1278 {
1279 av_free(picture->data[0]);
1280 }
1281
1282 /* return true if yuv planar */
1283 static inline int is_yuv_planar(const PixFmtInfo *ps)
1284 {
1285 return (ps->color_type == FF_COLOR_YUV ||
1286 ps->color_type == FF_COLOR_YUV_JPEG) &&
1287 ps->pixel_type == FF_PIXEL_PLANAR;
1288 }
1289
1290 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1291 enum PixelFormat pix_fmt, int top_band, int left_band)
1292 {
1293 int y_shift;
1294 int x_shift;
1295
1296 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1297 return -1;
1298
1299 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1300 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1301
1302 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1303 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1304 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1305
1306 dst->linesize[0] = src->linesize[0];
1307 dst->linesize[1] = src->linesize[1];
1308 dst->linesize[2] = src->linesize[2];
1309 return 0;
1310 }
1311
1312 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1313 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1314 int *color)
1315 {
1316 uint8_t *optr;
1317 int y_shift;
1318 int x_shift;
1319 int yheight;
1320 int i, y;
1321
1322 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1323 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1324
1325 for (i = 0; i < 3; i++) {
1326 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1327 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1328
1329 if (padtop || padleft) {
1330 memset(dst->data[i], color[i],
1331 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1332 }
1333
1334 if (padleft || padright) {
1335 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1336 (dst->linesize[i] - (padright >> x_shift));
1337 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1338 for (y = 0; y < yheight; y++) {
1339 memset(optr, color[i], (padleft + padright) >> x_shift);
1340 optr += dst->linesize[i];
1341 }
1342 }
1343
1344 if (src) { /* first line */
1345 uint8_t *iptr = src->data[i];
1346 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1347 (padleft >> x_shift);
1348 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1349 iptr += src->linesize[i];
1350 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1351 (dst->linesize[i] - (padright >> x_shift));
1352 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1353 for (y = 0; y < yheight; y++) {
1354 memset(optr, color[i], (padleft + padright) >> x_shift);
1355 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1356 (width - padleft - padright) >> x_shift);
1357 iptr += src->linesize[i];
1358 optr += dst->linesize[i];
1359 }
1360 }
1361
1362 if (padbottom || padright) {
1363 optr = dst->data[i] + dst->linesize[i] *
1364 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1365 memset(optr, color[i],dst->linesize[i] *
1366 (padbottom >> y_shift) + (padright >> x_shift));
1367 }
1368 }
1369 return 0;
1370 }
1371
1372 /* NOTE: we scan all the pixels to have an exact information */
1373 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1374 {
1375 const unsigned char *p;
1376 int src_wrap, ret, x, y;
1377 unsigned int a;
1378 uint32_t *palette = (uint32_t *)src->data[1];
1379
1380 p = src->data[0];
1381 src_wrap = src->linesize[0] - width;
1382 ret = 0;
1383 for(y=0;y<height;y++) {
1384 for(x=0;x<width;x++) {
1385 a = palette[p[0]] >> 24;
1386 if (a == 0x00) {
1387 ret |= FF_ALPHA_TRANSP;
1388 } else if (a != 0xff) {
1389 ret |= FF_ALPHA_SEMI_TRANSP;
1390 }
1391 p++;
1392 }
1393 p += src_wrap;
1394 }
1395 return ret;
1396 }
1397
1398 int img_get_alpha_info(const AVPicture *src,
1399 enum PixelFormat pix_fmt, int width, int height)
1400 {
1401 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1402 int ret;
1403
1404 /* no alpha can be represented in format */
1405 if (!pf->is_alpha)
1406 return 0;
1407 switch(pix_fmt) {
1408 case PIX_FMT_PAL8:
1409 ret = get_alpha_info_pal8(src, width, height);
1410 break;
1411 default:
1412 /* we do not know, so everything is indicated */
1413 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1414 break;
1415 }
1416 return ret;
1417 }
1418
1419 #if HAVE_MMX
1420 #define DEINT_INPLACE_LINE_LUM \
1421 movd_m2r(lum_m4[0],mm0);\
1422 movd_m2r(lum_m3[0],mm1);\
1423 movd_m2r(lum_m2[0],mm2);\
1424 movd_m2r(lum_m1[0],mm3);\
1425 movd_m2r(lum[0],mm4);\
1426 punpcklbw_r2r(mm7,mm0);\
1427 movd_r2m(mm2,lum_m4[0]);\
1428 punpcklbw_r2r(mm7,mm1);\
1429 punpcklbw_r2r(mm7,mm2);\
1430 punpcklbw_r2r(mm7,mm3);\
1431 punpcklbw_r2r(mm7,mm4);\
1432 paddw_r2r(mm3,mm1);\
1433 psllw_i2r(1,mm2);\
1434 paddw_r2r(mm4,mm0);\
1435 psllw_i2r(2,mm1);\
1436 paddw_r2r(mm6,mm2);\
1437 paddw_r2r(mm2,mm1);\
1438 psubusw_r2r(mm0,mm1);\
1439 psrlw_i2r(3,mm1);\
1440 packuswb_r2r(mm7,mm1);\
1441 movd_r2m(mm1,lum_m2[0]);
1442
1443 #define DEINT_LINE_LUM \
1444 movd_m2r(lum_m4[0],mm0);\
1445 movd_m2r(lum_m3[0],mm1);\
1446 movd_m2r(lum_m2[0],mm2);\
1447 movd_m2r(lum_m1[0],mm3);\
1448 movd_m2r(lum[0],mm4);\
1449 punpcklbw_r2r(mm7,mm0);\
1450 punpcklbw_r2r(mm7,mm1);\
1451 punpcklbw_r2r(mm7,mm2);\
1452 punpcklbw_r2r(mm7,mm3);\
1453 punpcklbw_r2r(mm7,mm4);\
1454 paddw_r2r(mm3,mm1);\
1455 psllw_i2r(1,mm2);\
1456 paddw_r2r(mm4,mm0);\
1457 psllw_i2r(2,mm1);\
1458 paddw_r2r(mm6,mm2);\
1459 paddw_r2r(mm2,mm1);\
1460 psubusw_r2r(mm0,mm1);\
1461 psrlw_i2r(3,mm1);\
1462 packuswb_r2r(mm7,mm1);\
1463 movd_r2m(mm1,dst[0]);
1464 #endif
1465
1466 /* filter parameters: [-1 4 2 4 -1] // 8 */
1467 static void deinterlace_line(uint8_t *dst,
1468 const uint8_t *lum_m4, const uint8_t *lum_m3,
1469 const uint8_t *lum_m2, const uint8_t *lum_m1,
1470 const uint8_t *lum,
1471 int size)
1472 {
1473 #if !HAVE_MMX
1474 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1475 int sum;
1476
1477 for(;size > 0;size--) {
1478 sum = -lum_m4[0];
1479 sum += lum_m3[0] << 2;
1480 sum += lum_m2[0] << 1;
1481 sum += lum_m1[0] << 2;
1482 sum += -lum[0];
1483 dst[0] = cm[(sum + 4) >> 3];
1484 lum_m4++;
1485 lum_m3++;
1486 lum_m2++;
1487 lum_m1++;
1488 lum++;
1489 dst++;
1490 }
1491 #else
1492
1493 {
1494 pxor_r2r(mm7,mm7);
1495 movq_m2r(ff_pw_4,mm6);
1496 }
1497 for (;size > 3; size-=4) {
1498 DEINT_LINE_LUM
1499 lum_m4+=4;
1500 lum_m3+=4;
1501 lum_m2+=4;
1502 lum_m1+=4;
1503 lum+=4;
1504 dst+=4;
1505 }
1506 #endif
1507 }
1508 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1509 int size)
1510 {
1511 #if !HAVE_MMX
1512 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1513 int sum;
1514
1515 for(;size > 0;size--) {
1516 sum = -lum_m4[0];
1517 sum += lum_m3[0] << 2;
1518 sum += lum_m2[0] << 1;
1519 lum_m4[0]=lum_m2[0];
1520 sum += lum_m1[0] << 2;
1521 sum += -lum[0];
1522 lum_m2[0] = cm[(sum + 4) >> 3];
1523 lum_m4++;
1524 lum_m3++;
1525 lum_m2++;
1526 lum_m1++;
1527 lum++;
1528 }
1529 #else
1530
1531 {
1532 pxor_r2r(mm7,mm7);
1533 movq_m2r(ff_pw_4,mm6);
1534 }
1535 for (;size > 3; size-=4) {
1536 DEINT_INPLACE_LINE_LUM
1537 lum_m4+=4;
1538 lum_m3+=4;
1539 lum_m2+=4;
1540 lum_m1+=4;
1541 lum+=4;
1542 }
1543 #endif
1544 }
1545
1546 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1547 top field is copied as is, but the bottom field is deinterlaced
1548 against the top field. */
1549 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1550 const uint8_t *src1, int src_wrap,
1551 int width, int height)
1552 {
1553 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1554 int y;
1555
1556 src_m2 = src1;
1557 src_m1 = src1;
1558 src_0=&src_m1[src_wrap];
1559 src_p1=&src_0[src_wrap];
1560 src_p2=&src_p1[src_wrap];
1561 for(y=0;y<(height-2);y+=2) {
1562 memcpy(dst,src_m1,width);
1563 dst += dst_wrap;
1564 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1565 src_m2 = src_0;
1566 src_m1 = src_p1;
1567 src_0 = src_p2;
1568 src_p1 += 2*src_wrap;
1569 src_p2 += 2*src_wrap;
1570 dst += dst_wrap;
1571 }
1572 memcpy(dst,src_m1,width);
1573 dst += dst_wrap;
1574 /* do last line */
1575 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1576 }
1577
1578 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1579 int width, int height)
1580 {
1581 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1582 int y;
1583 uint8_t *buf;
1584 buf = (uint8_t*)av_malloc(width);
1585
1586 src_m1 = src1;
1587 memcpy(buf,src_m1,width);
1588 src_0=&src_m1[src_wrap];
1589 src_p1=&src_0[src_wrap];
1590 src_p2=&src_p1[src_wrap];
1591 for(y=0;y<(height-2);y+=2) {
1592 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1593 src_m1 = src_p1;
1594 src_0 = src_p2;
1595 src_p1 += 2*src_wrap;
1596 src_p2 += 2*src_wrap;
1597 }
1598 /* do last line */
1599 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1600 av_free(buf);
1601 }
1602
1603 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1604 enum PixelFormat pix_fmt, int width, int height)
1605 {
1606 int i;
1607
1608 if (pix_fmt != PIX_FMT_YUV420P &&
1609 pix_fmt != PIX_FMT_YUV422P &&
1610 pix_fmt != PIX_FMT_YUV444P &&
1611 pix_fmt != PIX_FMT_YUV411P &&
1612 pix_fmt != PIX_FMT_GRAY8)
1613 return -1;
1614 if ((width & 3) != 0 || (height & 3) != 0)
1615 return -1;
1616
1617 for(i=0;i<3;i++) {
1618 if (i == 1) {
1619 switch(pix_fmt) {
1620 case PIX_FMT_YUV420P:
1621 width >>= 1;
1622 height >>= 1;
1623 break;
1624 case PIX_FMT_YUV422P:
1625 width >>= 1;
1626 break;
1627 case PIX_FMT_YUV411P:
1628 width >>= 2;
1629 break;
1630 default:
1631 break;
1632 }
1633 if (pix_fmt == PIX_FMT_GRAY8) {
1634 break;
1635 }
1636 }
1637 if (src == dst) {
1638 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1639 width, height);
1640 } else {
1641 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1642 src->data[i], src->linesize[i],
1643 width, height);
1644 }
1645 }
1646 emms_c();
1647 return 0;
1648 }
1649
ffmpeg Lagarith lossless decoder