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Hardcode AC-3 critical band tables when CONFIG_HARDCODED_TABLES is set.
[FFMpeg-mirror/lagarith.git] / libavcodec / imgconvert.c
blob4698fcf82e4f35d70c54e19139587c6e136bbe84
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_YUV420P16LE] = {
134 .name = "yuv420p16le",
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_YUV422P16LE] = {
142 .name = "yuv422p16le",
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_YUV444P16LE] = {
150 .name = "yuv444p16le",
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_YUV420P16BE] = {
158 .name = "yuv420p16be",
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_YUV422P16BE] = {
166 .name = "yuv422p16be",
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_YUV444P16BE] = {
174 .name = "yuv444p16be",
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 "%-11s %5d %9d %6c",
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_YUV420P16LE:
666 case PIX_FMT_YUV422P16LE:
667 case PIX_FMT_YUV444P16LE:
668 case PIX_FMT_YUV420P16BE:
669 case PIX_FMT_YUV422P16BE:
670 case PIX_FMT_YUV444P16BE:
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_BGR555BE:
706 case PIX_FMT_BGR555LE:
707 case PIX_FMT_BGR565BE:
708 case PIX_FMT_BGR565LE:
709 case PIX_FMT_RGB555BE:
710 case PIX_FMT_RGB555LE:
711 case PIX_FMT_RGB565BE:
712 case PIX_FMT_RGB565LE:
713 case PIX_FMT_YUYV422:
714 picture->linesize[0] = width * 2;
715 break;
716 case PIX_FMT_UYVY422:
717 picture->linesize[0] = width * 2;
718 break;
719 case PIX_FMT_UYYVYY411:
720 picture->linesize[0] = width + width/2;
721 break;
722 case PIX_FMT_RGB4:
723 case PIX_FMT_BGR4:
724 picture->linesize[0] = width / 2;
725 break;
726 case PIX_FMT_MONOWHITE:
727 case PIX_FMT_MONOBLACK:
728 picture->linesize[0] = (width + 7) >> 3;
729 break;
730 case PIX_FMT_PAL8:
731 case PIX_FMT_RGB8:
732 case PIX_FMT_BGR8:
733 case PIX_FMT_RGB4_BYTE:
734 case PIX_FMT_BGR4_BYTE:
735 case PIX_FMT_GRAY8:
736 picture->linesize[0] = width;
737 break;
738 default:
739 return -1;
740 }
741 return 0;
742 }
743
744 int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
745 int height)
746 {
747 int size, h2, size2;
748 const PixFmtInfo *pinfo;
749
750 pinfo = &pix_fmt_info[pix_fmt];
751 size = picture->linesize[0] * height;
752 switch(pix_fmt) {
753 case PIX_FMT_YUV420P:
754 case PIX_FMT_YUV422P:
755 case PIX_FMT_YUV444P:
756 case PIX_FMT_YUV410P:
757 case PIX_FMT_YUV411P:
758 case PIX_FMT_YUV440P:
759 case PIX_FMT_YUVJ420P:
760 case PIX_FMT_YUVJ422P:
761 case PIX_FMT_YUVJ444P:
762 case PIX_FMT_YUVJ440P:
763 case PIX_FMT_YUV420P16LE:
764 case PIX_FMT_YUV422P16LE:
765 case PIX_FMT_YUV444P16LE:
766 case PIX_FMT_YUV420P16BE:
767 case PIX_FMT_YUV422P16BE:
768 case PIX_FMT_YUV444P16BE:
769 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
770 size2 = picture->linesize[1] * h2;
771 picture->data[0] = ptr;
772 picture->data[1] = picture->data[0] + size;
773 picture->data[2] = picture->data[1] + size2;
774 picture->data[3] = NULL;
775 return size + 2 * size2;
776 case PIX_FMT_YUVA420P:
777 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
778 size2 = picture->linesize[1] * h2;
779 picture->data[0] = ptr;
780 picture->data[1] = picture->data[0] + size;
781 picture->data[2] = picture->data[1] + size2;
782 picture->data[3] = picture->data[1] + size2 + size2;
783 return 2 * size + 2 * size2;
784 case PIX_FMT_NV12:
785 case PIX_FMT_NV21:
786 h2 = (height + (1 << pinfo->y_chroma_shift) - 1) >> pinfo->y_chroma_shift;
787 size2 = picture->linesize[1] * h2 * 2;
788 picture->data[0] = ptr;
789 picture->data[1] = picture->data[0] + size;
790 picture->data[2] = NULL;
791 picture->data[3] = NULL;
792 return size + 2 * size2;
793 case PIX_FMT_RGB24:
794 case PIX_FMT_BGR24:
795 case PIX_FMT_ARGB:
796 case PIX_FMT_ABGR:
797 case PIX_FMT_RGBA:
798 case PIX_FMT_BGRA:
799 case PIX_FMT_RGB48BE:
800 case PIX_FMT_RGB48LE:
801 case PIX_FMT_GRAY16BE:
802 case PIX_FMT_GRAY16LE:
803 case PIX_FMT_BGR555BE:
804 case PIX_FMT_BGR555LE:
805 case PIX_FMT_BGR565BE:
806 case PIX_FMT_BGR565LE:
807 case PIX_FMT_RGB555BE:
808 case PIX_FMT_RGB555LE:
809 case PIX_FMT_RGB565BE:
810 case PIX_FMT_RGB565LE:
811 case PIX_FMT_YUYV422:
812 case PIX_FMT_UYVY422:
813 case PIX_FMT_UYYVYY411:
814 case PIX_FMT_RGB4:
815 case PIX_FMT_BGR4:
816 case PIX_FMT_MONOWHITE:
817 case PIX_FMT_MONOBLACK:
818 picture->data[0] = ptr;
819 picture->data[1] = NULL;
820 picture->data[2] = NULL;
821 picture->data[3] = NULL;
822 return size;
823 case PIX_FMT_PAL8:
824 case PIX_FMT_RGB8:
825 case PIX_FMT_BGR8:
826 case PIX_FMT_RGB4_BYTE:
827 case PIX_FMT_BGR4_BYTE:
828 case PIX_FMT_GRAY8:
829 size2 = (size + 3) & ~3;
830 picture->data[0] = ptr;
831 picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
832 picture->data[2] = NULL;
833 picture->data[3] = NULL;
834 return size2 + 256 * 4;
835 default:
836 picture->data[0] = NULL;
837 picture->data[1] = NULL;
838 picture->data[2] = NULL;
839 picture->data[3] = NULL;
840 return -1;
841 }
842 }
843
844 int avpicture_fill(AVPicture *picture, uint8_t *ptr,
845 enum PixelFormat pix_fmt, int width, int height)
846 {
847
848 if(avcodec_check_dimensions(NULL, width, height))
849 return -1;
850
851 if (ff_fill_linesize(picture, pix_fmt, width))
852 return -1;
853
854 return ff_fill_pointer(picture, ptr, pix_fmt, height);
855 }
856
857 int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
858 unsigned char *dest, int dest_size)
859 {
860 const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
861 int i, j, w, ow, h, oh, data_planes;
862 const unsigned char* s;
863 int size = avpicture_get_size(pix_fmt, width, height);
864
865 if (size > dest_size || size < 0)
866 return -1;
867
868 if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
869 if (pix_fmt == PIX_FMT_YUYV422 ||
870 pix_fmt == PIX_FMT_UYVY422 ||
871 pix_fmt == PIX_FMT_BGR565BE ||
872 pix_fmt == PIX_FMT_BGR565LE ||
873 pix_fmt == PIX_FMT_BGR555BE ||
874 pix_fmt == PIX_FMT_BGR555LE ||
875 pix_fmt == PIX_FMT_RGB565BE ||
876 pix_fmt == PIX_FMT_RGB565LE ||
877 pix_fmt == PIX_FMT_RGB555BE ||
878 pix_fmt == PIX_FMT_RGB555LE)
879 w = width * 2;
880 else if (pix_fmt == PIX_FMT_UYYVYY411)
881 w = width + width/2;
882 else if (pix_fmt == PIX_FMT_PAL8)
883 w = width;
884 else
885 w = width * (pf->depth * pf->nb_channels / 8);
886
887 data_planes = 1;
888 h = height;
889 } else {
890 data_planes = pf->nb_channels;
891 w = (width*pf->depth + 7)/8;
892 h = height;
893 }
894
895 ow = w;
896 oh = h;
897
898 for (i=0; i<data_planes; i++) {
899 if (i == 1) {
900 w = width >> pf->x_chroma_shift;
901 h = height >> pf->y_chroma_shift;
902 } else if (i == 3) {
903 w = ow;
904 h = oh;
905 }
906 s = src->data[i];
907 for(j=0; j<h; j++) {
908 memcpy(dest, s, w);
909 dest += w;
910 s += src->linesize[i];
911 }
912 }
913
914 if (pf->pixel_type == FF_PIXEL_PALETTE)
915 memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
916
917 return size;
918 }
919
920 int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
921 {
922 AVPicture dummy_pict;
923 if(avcodec_check_dimensions(NULL, width, height))
924 return -1;
925 switch (pix_fmt) {
926 case PIX_FMT_RGB8:
927 case PIX_FMT_BGR8:
928 case PIX_FMT_RGB4_BYTE:
929 case PIX_FMT_BGR4_BYTE:
930 case PIX_FMT_GRAY8:
931 // do not include palette for these pseudo-paletted formats
932 return width * height;
933 }
934 return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
935 }
936
937 int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
938 int has_alpha)
939 {
940 const PixFmtInfo *pf, *ps;
941 int loss;
942
943 ps = &pix_fmt_info[src_pix_fmt];
944
945 /* compute loss */
946 loss = 0;
947 pf = &pix_fmt_info[dst_pix_fmt];
948 if (pf->depth < ps->depth ||
949 ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE) &&
950 (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE)))
951 loss |= FF_LOSS_DEPTH;
952 if (pf->x_chroma_shift > ps->x_chroma_shift ||
953 pf->y_chroma_shift > ps->y_chroma_shift)
954 loss |= FF_LOSS_RESOLUTION;
955 switch(pf->color_type) {
956 case FF_COLOR_RGB:
957 if (ps->color_type != FF_COLOR_RGB &&
958 ps->color_type != FF_COLOR_GRAY)
959 loss |= FF_LOSS_COLORSPACE;
960 break;
961 case FF_COLOR_GRAY:
962 if (ps->color_type != FF_COLOR_GRAY)
963 loss |= FF_LOSS_COLORSPACE;
964 break;
965 case FF_COLOR_YUV:
966 if (ps->color_type != FF_COLOR_YUV)
967 loss |= FF_LOSS_COLORSPACE;
968 break;
969 case FF_COLOR_YUV_JPEG:
970 if (ps->color_type != FF_COLOR_YUV_JPEG &&
971 ps->color_type != FF_COLOR_YUV &&
972 ps->color_type != FF_COLOR_GRAY)
973 loss |= FF_LOSS_COLORSPACE;
974 break;
975 default:
976 /* fail safe test */
977 if (ps->color_type != pf->color_type)
978 loss |= FF_LOSS_COLORSPACE;
979 break;
980 }
981 if (pf->color_type == FF_COLOR_GRAY &&
982 ps->color_type != FF_COLOR_GRAY)
983 loss |= FF_LOSS_CHROMA;
984 if (!pf->is_alpha && (ps->is_alpha && has_alpha))
985 loss |= FF_LOSS_ALPHA;
986 if (pf->pixel_type == FF_PIXEL_PALETTE &&
987 (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
988 loss |= FF_LOSS_COLORQUANT;
989 return loss;
990 }
991
992 static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
993 {
994 int bits;
995 const PixFmtInfo *pf;
996
997 pf = &pix_fmt_info[pix_fmt];
998 switch(pf->pixel_type) {
999 case FF_PIXEL_PACKED:
1000 switch(pix_fmt) {
1001 case PIX_FMT_YUYV422:
1002 case PIX_FMT_UYVY422:
1003 case PIX_FMT_RGB565BE:
1004 case PIX_FMT_RGB565LE:
1005 case PIX_FMT_RGB555BE:
1006 case PIX_FMT_RGB555LE:
1007 case PIX_FMT_BGR565BE:
1008 case PIX_FMT_BGR565LE:
1009 case PIX_FMT_BGR555BE:
1010 case PIX_FMT_BGR555LE:
1011 bits = 16;
1012 break;
1013 case PIX_FMT_UYYVYY411:
1014 bits = 12;
1015 break;
1016 default:
1017 bits = pf->depth * pf->nb_channels;
1018 break;
1019 }
1020 break;
1021 case FF_PIXEL_PLANAR:
1022 if (pf->x_chroma_shift == 0 && pf->y_chroma_shift == 0) {
1023 bits = pf->depth * pf->nb_channels;
1024 } else {
1025 bits = pf->depth + ((2 * pf->depth) >>
1026 (pf->x_chroma_shift + pf->y_chroma_shift));
1027 }
1028 break;
1029 case FF_PIXEL_PALETTE:
1030 bits = 8;
1031 break;
1032 default:
1033 bits = -1;
1034 break;
1035 }
1036 return bits;
1037 }
1038
1039 static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
1040 enum PixelFormat src_pix_fmt,
1041 int has_alpha,
1042 int loss_mask)
1043 {
1044 int dist, i, loss, min_dist;
1045 enum PixelFormat dst_pix_fmt;
1046
1047 /* find exact color match with smallest size */
1048 dst_pix_fmt = -1;
1049 min_dist = 0x7fffffff;
1050 for(i = 0;i < PIX_FMT_NB; i++) {
1051 if (pix_fmt_mask & (1ULL << i)) {
1052 loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
1053 if (loss == 0) {
1054 dist = avg_bits_per_pixel(i);
1055 if (dist < min_dist) {
1056 min_dist = dist;
1057 dst_pix_fmt = i;
1058 }
1059 }
1060 }
1061 }
1062 return dst_pix_fmt;
1063 }
1064
1065 enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
1066 int has_alpha, int *loss_ptr)
1067 {
1068 enum PixelFormat dst_pix_fmt;
1069 int loss_mask, i;
1070 static const int loss_mask_order[] = {
1071 ~0, /* no loss first */
1072 ~FF_LOSS_ALPHA,
1073 ~FF_LOSS_RESOLUTION,
1074 ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
1075 ~FF_LOSS_COLORQUANT,
1076 ~FF_LOSS_DEPTH,
1077 0,
1078 };
1079
1080 /* try with successive loss */
1081 i = 0;
1082 for(;;) {
1083 loss_mask = loss_mask_order[i++];
1084 dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
1085 has_alpha, loss_mask);
1086 if (dst_pix_fmt >= 0)
1087 goto found;
1088 if (loss_mask == 0)
1089 break;
1090 }
1091 return -1;
1092 found:
1093 if (loss_ptr)
1094 *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
1095 return dst_pix_fmt;
1096 }
1097
1098 void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
1099 const uint8_t *src, int src_wrap,
1100 int width, int height)
1101 {
1102 if((!dst) || (!src))
1103 return;
1104 for(;height > 0; height--) {
1105 memcpy(dst, src, width);
1106 dst += dst_wrap;
1107 src += src_wrap;
1108 }
1109 }
1110
1111 int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
1112 {
1113 int bits;
1114 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1115
1116 pf = &pix_fmt_info[pix_fmt];
1117 switch(pf->pixel_type) {
1118 case FF_PIXEL_PACKED:
1119 switch(pix_fmt) {
1120 case PIX_FMT_YUYV422:
1121 case PIX_FMT_UYVY422:
1122 case PIX_FMT_RGB565BE:
1123 case PIX_FMT_RGB565LE:
1124 case PIX_FMT_RGB555BE:
1125 case PIX_FMT_RGB555LE:
1126 case PIX_FMT_BGR565BE:
1127 case PIX_FMT_BGR565LE:
1128 case PIX_FMT_BGR555BE:
1129 case PIX_FMT_BGR555LE:
1130 bits = 16;
1131 break;
1132 case PIX_FMT_UYYVYY411:
1133 bits = 12;
1134 break;
1135 default:
1136 bits = pf->depth * pf->nb_channels;
1137 break;
1138 }
1139 return (width * bits + 7) >> 3;
1140 break;
1141 case FF_PIXEL_PLANAR:
1142 if (plane == 1 || plane == 2)
1143 width= -((-width)>>pf->x_chroma_shift);
1144
1145 return (width * pf->depth + 7) >> 3;
1146 break;
1147 case FF_PIXEL_PALETTE:
1148 if (plane == 0)
1149 return width;
1150 break;
1151 }
1152
1153 return -1;
1154 }
1155
1156 void av_picture_copy(AVPicture *dst, const AVPicture *src,
1157 enum PixelFormat pix_fmt, int width, int height)
1158 {
1159 int i;
1160 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1161
1162 switch(pf->pixel_type) {
1163 case FF_PIXEL_PACKED:
1164 case FF_PIXEL_PLANAR:
1165 for(i = 0; i < pf->nb_channels; i++) {
1166 int h;
1167 int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1168 h = height;
1169 if (i == 1 || i == 2) {
1170 h= -((-height)>>pf->y_chroma_shift);
1171 }
1172 ff_img_copy_plane(dst->data[i], dst->linesize[i],
1173 src->data[i], src->linesize[i],
1174 bwidth, h);
1175 }
1176 break;
1177 case FF_PIXEL_PALETTE:
1178 ff_img_copy_plane(dst->data[0], dst->linesize[0],
1179 src->data[0], src->linesize[0],
1180 width, height);
1181 /* copy the palette */
1182 ff_img_copy_plane(dst->data[1], dst->linesize[1],
1183 src->data[1], src->linesize[1],
1184 4, 256);
1185 break;
1186 }
1187 }
1188
1189 /* 2x2 -> 1x1 */
1190 void ff_shrink22(uint8_t *dst, int dst_wrap,
1191 const uint8_t *src, int src_wrap,
1192 int width, int height)
1193 {
1194 int w;
1195 const uint8_t *s1, *s2;
1196 uint8_t *d;
1197
1198 for(;height > 0; height--) {
1199 s1 = src;
1200 s2 = s1 + src_wrap;
1201 d = dst;
1202 for(w = width;w >= 4; w-=4) {
1203 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1204 d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1205 d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1206 d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1207 s1 += 8;
1208 s2 += 8;
1209 d += 4;
1210 }
1211 for(;w > 0; w--) {
1212 d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1213 s1 += 2;
1214 s2 += 2;
1215 d++;
1216 }
1217 src += 2 * src_wrap;
1218 dst += dst_wrap;
1219 }
1220 }
1221
1222 /* 4x4 -> 1x1 */
1223 void ff_shrink44(uint8_t *dst, int dst_wrap,
1224 const uint8_t *src, int src_wrap,
1225 int width, int height)
1226 {
1227 int w;
1228 const uint8_t *s1, *s2, *s3, *s4;
1229 uint8_t *d;
1230
1231 for(;height > 0; height--) {
1232 s1 = src;
1233 s2 = s1 + src_wrap;
1234 s3 = s2 + src_wrap;
1235 s4 = s3 + src_wrap;
1236 d = dst;
1237 for(w = width;w > 0; w--) {
1238 d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1239 s2[0] + s2[1] + s2[2] + s2[3] +
1240 s3[0] + s3[1] + s3[2] + s3[3] +
1241 s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1242 s1 += 4;
1243 s2 += 4;
1244 s3 += 4;
1245 s4 += 4;
1246 d++;
1247 }
1248 src += 4 * src_wrap;
1249 dst += dst_wrap;
1250 }
1251 }
1252
1253 /* 8x8 -> 1x1 */
1254 void ff_shrink88(uint8_t *dst, int dst_wrap,
1255 const uint8_t *src, int src_wrap,
1256 int width, int height)
1257 {
1258 int w, i;
1259
1260 for(;height > 0; height--) {
1261 for(w = width;w > 0; w--) {
1262 int tmp=0;
1263 for(i=0; i<8; i++){
1264 tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1265 src += src_wrap;
1266 }
1267 *(dst++) = (tmp + 32)>>6;
1268 src += 8 - 8*src_wrap;
1269 }
1270 src += 8*src_wrap - 8*width;
1271 dst += dst_wrap - width;
1272 }
1273 }
1274
1275
1276 int avpicture_alloc(AVPicture *picture,
1277 enum PixelFormat pix_fmt, int width, int height)
1278 {
1279 int size;
1280 void *ptr;
1281
1282 size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1283 if(size<0)
1284 goto fail;
1285 ptr = av_malloc(size);
1286 if (!ptr)
1287 goto fail;
1288 avpicture_fill(picture, ptr, pix_fmt, width, height);
1289 if(picture->data[1] && !picture->data[2])
1290 ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1291
1292 return 0;
1293 fail:
1294 memset(picture, 0, sizeof(AVPicture));
1295 return -1;
1296 }
1297
1298 void avpicture_free(AVPicture *picture)
1299 {
1300 av_free(picture->data[0]);
1301 }
1302
1303 /* return true if yuv planar */
1304 static inline int is_yuv_planar(const PixFmtInfo *ps)
1305 {
1306 return (ps->color_type == FF_COLOR_YUV ||
1307 ps->color_type == FF_COLOR_YUV_JPEG) &&
1308 ps->pixel_type == FF_PIXEL_PLANAR;
1309 }
1310
1311 int av_picture_crop(AVPicture *dst, const AVPicture *src,
1312 enum PixelFormat pix_fmt, int top_band, int left_band)
1313 {
1314 int y_shift;
1315 int x_shift;
1316
1317 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1318 return -1;
1319
1320 y_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
1321 x_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
1322
1323 dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1324 dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1325 dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1326
1327 dst->linesize[0] = src->linesize[0];
1328 dst->linesize[1] = src->linesize[1];
1329 dst->linesize[2] = src->linesize[2];
1330 return 0;
1331 }
1332
1333 int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1334 enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1335 int *color)
1336 {
1337 uint8_t *optr;
1338 int y_shift;
1339 int x_shift;
1340 int yheight;
1341 int i, y;
1342
1343 if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1344 !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1345
1346 for (i = 0; i < 3; i++) {
1347 x_shift = i ? pix_fmt_info[pix_fmt].x_chroma_shift : 0;
1348 y_shift = i ? pix_fmt_info[pix_fmt].y_chroma_shift : 0;
1349
1350 if (padtop || padleft) {
1351 memset(dst->data[i], color[i],
1352 dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1353 }
1354
1355 if (padleft || padright) {
1356 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1357 (dst->linesize[i] - (padright >> x_shift));
1358 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1359 for (y = 0; y < yheight; y++) {
1360 memset(optr, color[i], (padleft + padright) >> x_shift);
1361 optr += dst->linesize[i];
1362 }
1363 }
1364
1365 if (src) { /* first line */
1366 uint8_t *iptr = src->data[i];
1367 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1368 (padleft >> x_shift);
1369 memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1370 iptr += src->linesize[i];
1371 optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1372 (dst->linesize[i] - (padright >> x_shift));
1373 yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1374 for (y = 0; y < yheight; y++) {
1375 memset(optr, color[i], (padleft + padright) >> x_shift);
1376 memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1377 (width - padleft - padright) >> x_shift);
1378 iptr += src->linesize[i];
1379 optr += dst->linesize[i];
1380 }
1381 }
1382
1383 if (padbottom || padright) {
1384 optr = dst->data[i] + dst->linesize[i] *
1385 ((height - padbottom) >> y_shift) - (padright >> x_shift);
1386 memset(optr, color[i],dst->linesize[i] *
1387 (padbottom >> y_shift) + (padright >> x_shift));
1388 }
1389 }
1390 return 0;
1391 }
1392
1393 /* NOTE: we scan all the pixels to have an exact information */
1394 static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1395 {
1396 const unsigned char *p;
1397 int src_wrap, ret, x, y;
1398 unsigned int a;
1399 uint32_t *palette = (uint32_t *)src->data[1];
1400
1401 p = src->data[0];
1402 src_wrap = src->linesize[0] - width;
1403 ret = 0;
1404 for(y=0;y<height;y++) {
1405 for(x=0;x<width;x++) {
1406 a = palette[p[0]] >> 24;
1407 if (a == 0x00) {
1408 ret |= FF_ALPHA_TRANSP;
1409 } else if (a != 0xff) {
1410 ret |= FF_ALPHA_SEMI_TRANSP;
1411 }
1412 p++;
1413 }
1414 p += src_wrap;
1415 }
1416 return ret;
1417 }
1418
1419 int img_get_alpha_info(const AVPicture *src,
1420 enum PixelFormat pix_fmt, int width, int height)
1421 {
1422 const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1423 int ret;
1424
1425 /* no alpha can be represented in format */
1426 if (!pf->is_alpha)
1427 return 0;
1428 switch(pix_fmt) {
1429 case PIX_FMT_PAL8:
1430 ret = get_alpha_info_pal8(src, width, height);
1431 break;
1432 default:
1433 /* we do not know, so everything is indicated */
1434 ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1435 break;
1436 }
1437 return ret;
1438 }
1439
1440 #if HAVE_MMX
1441 #define DEINT_INPLACE_LINE_LUM \
1442 movd_m2r(lum_m4[0],mm0);\
1443 movd_m2r(lum_m3[0],mm1);\
1444 movd_m2r(lum_m2[0],mm2);\
1445 movd_m2r(lum_m1[0],mm3);\
1446 movd_m2r(lum[0],mm4);\
1447 punpcklbw_r2r(mm7,mm0);\
1448 movd_r2m(mm2,lum_m4[0]);\
1449 punpcklbw_r2r(mm7,mm1);\
1450 punpcklbw_r2r(mm7,mm2);\
1451 punpcklbw_r2r(mm7,mm3);\
1452 punpcklbw_r2r(mm7,mm4);\
1453 paddw_r2r(mm3,mm1);\
1454 psllw_i2r(1,mm2);\
1455 paddw_r2r(mm4,mm0);\
1456 psllw_i2r(2,mm1);\
1457 paddw_r2r(mm6,mm2);\
1458 paddw_r2r(mm2,mm1);\
1459 psubusw_r2r(mm0,mm1);\
1460 psrlw_i2r(3,mm1);\
1461 packuswb_r2r(mm7,mm1);\
1462 movd_r2m(mm1,lum_m2[0]);
1463
1464 #define DEINT_LINE_LUM \
1465 movd_m2r(lum_m4[0],mm0);\
1466 movd_m2r(lum_m3[0],mm1);\
1467 movd_m2r(lum_m2[0],mm2);\
1468 movd_m2r(lum_m1[0],mm3);\
1469 movd_m2r(lum[0],mm4);\
1470 punpcklbw_r2r(mm7,mm0);\
1471 punpcklbw_r2r(mm7,mm1);\
1472 punpcklbw_r2r(mm7,mm2);\
1473 punpcklbw_r2r(mm7,mm3);\
1474 punpcklbw_r2r(mm7,mm4);\
1475 paddw_r2r(mm3,mm1);\
1476 psllw_i2r(1,mm2);\
1477 paddw_r2r(mm4,mm0);\
1478 psllw_i2r(2,mm1);\
1479 paddw_r2r(mm6,mm2);\
1480 paddw_r2r(mm2,mm1);\
1481 psubusw_r2r(mm0,mm1);\
1482 psrlw_i2r(3,mm1);\
1483 packuswb_r2r(mm7,mm1);\
1484 movd_r2m(mm1,dst[0]);
1485 #endif
1486
1487 /* filter parameters: [-1 4 2 4 -1] // 8 */
1488 static void deinterlace_line(uint8_t *dst,
1489 const uint8_t *lum_m4, const uint8_t *lum_m3,
1490 const uint8_t *lum_m2, const uint8_t *lum_m1,
1491 const uint8_t *lum,
1492 int size)
1493 {
1494 #if !HAVE_MMX
1495 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1496 int sum;
1497
1498 for(;size > 0;size--) {
1499 sum = -lum_m4[0];
1500 sum += lum_m3[0] << 2;
1501 sum += lum_m2[0] << 1;
1502 sum += lum_m1[0] << 2;
1503 sum += -lum[0];
1504 dst[0] = cm[(sum + 4) >> 3];
1505 lum_m4++;
1506 lum_m3++;
1507 lum_m2++;
1508 lum_m1++;
1509 lum++;
1510 dst++;
1511 }
1512 #else
1513
1514 {
1515 pxor_r2r(mm7,mm7);
1516 movq_m2r(ff_pw_4,mm6);
1517 }
1518 for (;size > 3; size-=4) {
1519 DEINT_LINE_LUM
1520 lum_m4+=4;
1521 lum_m3+=4;
1522 lum_m2+=4;
1523 lum_m1+=4;
1524 lum+=4;
1525 dst+=4;
1526 }
1527 #endif
1528 }
1529 static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1530 int size)
1531 {
1532 #if !HAVE_MMX
1533 uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1534 int sum;
1535
1536 for(;size > 0;size--) {
1537 sum = -lum_m4[0];
1538 sum += lum_m3[0] << 2;
1539 sum += lum_m2[0] << 1;
1540 lum_m4[0]=lum_m2[0];
1541 sum += lum_m1[0] << 2;
1542 sum += -lum[0];
1543 lum_m2[0] = cm[(sum + 4) >> 3];
1544 lum_m4++;
1545 lum_m3++;
1546 lum_m2++;
1547 lum_m1++;
1548 lum++;
1549 }
1550 #else
1551
1552 {
1553 pxor_r2r(mm7,mm7);
1554 movq_m2r(ff_pw_4,mm6);
1555 }
1556 for (;size > 3; size-=4) {
1557 DEINT_INPLACE_LINE_LUM
1558 lum_m4+=4;
1559 lum_m3+=4;
1560 lum_m2+=4;
1561 lum_m1+=4;
1562 lum+=4;
1563 }
1564 #endif
1565 }
1566
1567 /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1568 top field is copied as is, but the bottom field is deinterlaced
1569 against the top field. */
1570 static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1571 const uint8_t *src1, int src_wrap,
1572 int width, int height)
1573 {
1574 const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1575 int y;
1576
1577 src_m2 = src1;
1578 src_m1 = src1;
1579 src_0=&src_m1[src_wrap];
1580 src_p1=&src_0[src_wrap];
1581 src_p2=&src_p1[src_wrap];
1582 for(y=0;y<(height-2);y+=2) {
1583 memcpy(dst,src_m1,width);
1584 dst += dst_wrap;
1585 deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1586 src_m2 = src_0;
1587 src_m1 = src_p1;
1588 src_0 = src_p2;
1589 src_p1 += 2*src_wrap;
1590 src_p2 += 2*src_wrap;
1591 dst += dst_wrap;
1592 }
1593 memcpy(dst,src_m1,width);
1594 dst += dst_wrap;
1595 /* do last line */
1596 deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1597 }
1598
1599 static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1600 int width, int height)
1601 {
1602 uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1603 int y;
1604 uint8_t *buf;
1605 buf = (uint8_t*)av_malloc(width);
1606
1607 src_m1 = src1;
1608 memcpy(buf,src_m1,width);
1609 src_0=&src_m1[src_wrap];
1610 src_p1=&src_0[src_wrap];
1611 src_p2=&src_p1[src_wrap];
1612 for(y=0;y<(height-2);y+=2) {
1613 deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1614 src_m1 = src_p1;
1615 src_0 = src_p2;
1616 src_p1 += 2*src_wrap;
1617 src_p2 += 2*src_wrap;
1618 }
1619 /* do last line */
1620 deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1621 av_free(buf);
1622 }
1623
1624 int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1625 enum PixelFormat pix_fmt, int width, int height)
1626 {
1627 int i;
1628
1629 if (pix_fmt != PIX_FMT_YUV420P &&
1630 pix_fmt != PIX_FMT_YUV422P &&
1631 pix_fmt != PIX_FMT_YUV444P &&
1632 pix_fmt != PIX_FMT_YUV411P &&
1633 pix_fmt != PIX_FMT_GRAY8)
1634 return -1;
1635 if ((width & 3) != 0 || (height & 3) != 0)
1636 return -1;
1637
1638 for(i=0;i<3;i++) {
1639 if (i == 1) {
1640 switch(pix_fmt) {
1641 case PIX_FMT_YUV420P:
1642 width >>= 1;
1643 height >>= 1;
1644 break;
1645 case PIX_FMT_YUV422P:
1646 width >>= 1;
1647 break;
1648 case PIX_FMT_YUV411P:
1649 width >>= 2;
1650 break;
1651 default:
1652 break;
1653 }
1654 if (pix_fmt == PIX_FMT_GRAY8) {
1655 break;
1656 }
1657 }
1658 if (src == dst) {
1659 deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1660 width, height);
1661 } else {
1662 deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1663 src->data[i], src->linesize[i],
1664 width, height);
1665 }
1666 }
1667 emms_c();
1668 return 0;
1669 }
1670
ffmpeg Lagarith lossless decoder