aes: improve av_aes_crypt() documentation
[ffmpeg.git] / libavutil / pixdesc.c
1 /*
2  * pixel format descriptor
3  * Copyright (c) 2009 Michael Niedermayer <michaelni@gmx.at>
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 #include "pixfmt.h"
23 #include "pixdesc.h"
24
25 #include "intreadwrite.h"
26
27 void read_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
28                const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component)
29 {
30     AVComponentDescriptor comp= desc->comp[c];
31     int plane= comp.plane;
32     int depth= comp.depth_minus1+1;
33     int mask = (1<<depth)-1;
34     int shift= comp.shift;
35     int step = comp.step_minus1+1;
36     int flags= desc->flags;
37
38     if (flags & PIX_FMT_BITSTREAM){
39         int skip = x*step + comp.offset_plus1-1;
40         const uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
41         int shift = 8 - depth - (skip&7);
42
43         while(w--){
44             int val = (*p >> shift) & mask;
45             if(read_pal_component)
46                 val= data[1][4*val + c];
47             shift -= step;
48             p -= shift>>3;
49             shift &= 7;
50             *dst++= val;
51         }
52     } else {
53         const uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
54
55         while(w--){
56             int val;
57             if(flags & PIX_FMT_BE) val= AV_RB16(p);
58             else                   val= AV_RL16(p);
59             val = (val>>shift) & mask;
60             if(read_pal_component)
61                 val= data[1][4*val + c];
62             p+= step;
63             *dst++= val;
64         }
65     }
66 }
67
68 void write_line(const uint16_t *src, uint8_t *data[4], const int linesize[4],
69                 const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
70 {
71     AVComponentDescriptor comp = desc->comp[c];
72     int plane = comp.plane;
73     int depth = comp.depth_minus1+1;
74     int step  = comp.step_minus1+1;
75     int flags = desc->flags;
76
77     if (flags & PIX_FMT_BITSTREAM) {
78         int skip = x*step + comp.offset_plus1-1;
79         uint8_t *p = data[plane] + y*linesize[plane] + (skip>>3);
80         int shift = 8 - depth - (skip&7);
81
82         while (w--) {
83             *p |= *src++ << shift;
84             shift -= step;
85             p -= shift>>3;
86             shift &= 7;
87         }
88     } else {
89         int shift = comp.shift;
90         uint8_t *p = data[plane]+ y*linesize[plane] + x*step + comp.offset_plus1-1;
91
92         while (w--) {
93             if (flags & PIX_FMT_BE) {
94                 uint16_t val = AV_RB16(p) | (*src++<<shift);
95                 AV_WB16(p, val);
96             } else {
97                 uint16_t val = AV_RL16(p) | (*src++<<shift);
98                 AV_WL16(p, val);
99             }
100             p+= step;
101         }
102     }
103 }
104
105 const AVPixFmtDescriptor av_pix_fmt_descriptors[PIX_FMT_NB] = {
106     [PIX_FMT_YUV420P] = {
107         .name = "yuv420p",
108         .nb_components= 3,
109         .log2_chroma_w= 1,
110         .log2_chroma_h= 1,
111         .comp = {
112             {0,0,1,0,7},        /* Y */
113             {1,0,1,0,7},        /* U */
114             {2,0,1,0,7},        /* V */
115         },
116     },
117     [PIX_FMT_YUYV422] = {
118         .name = "yuyv422",
119         .nb_components= 3,
120         .log2_chroma_w= 1,
121         .log2_chroma_h= 0,
122         .comp = {
123             {0,1,1,0,7},        /* Y */
124             {0,3,2,0,7},        /* U */
125             {0,3,4,0,7},        /* V */
126         },
127     },
128     [PIX_FMT_RGB24] = {
129         .name = "rgb24",
130         .nb_components= 3,
131         .log2_chroma_w= 0,
132         .log2_chroma_h= 0,
133         .comp = {
134             {0,2,1,0,7},        /* R */
135             {0,2,2,0,7},        /* G */
136             {0,2,3,0,7},        /* B */
137         },
138     },
139     [PIX_FMT_BGR24] = {
140         .name = "bgr24",
141         .nb_components= 3,
142         .log2_chroma_w= 0,
143         .log2_chroma_h= 0,
144         .comp = {
145             {0,2,1,0,7},        /* B */
146             {0,2,2,0,7},        /* G */
147             {0,2,3,0,7},        /* R */
148         },
149     },
150     [PIX_FMT_YUV422P] = {
151         .name = "yuv422p",
152         .nb_components= 3,
153         .log2_chroma_w= 1,
154         .log2_chroma_h= 0,
155         .comp = {
156             {0,0,1,0,7},        /* Y */
157             {1,0,1,0,7},        /* U */
158             {2,0,1,0,7},        /* V */
159         },
160     },
161     [PIX_FMT_YUV444P] = {
162         .name = "yuv444p",
163         .nb_components= 3,
164         .log2_chroma_w= 0,
165         .log2_chroma_h= 0,
166         .comp = {
167             {0,0,1,0,7},        /* Y */
168             {1,0,1,0,7},        /* U */
169             {2,0,1,0,7},        /* V */
170         },
171     },
172     [PIX_FMT_YUV410P] = {
173         .name = "yuv410p",
174         .nb_components= 3,
175         .log2_chroma_w= 2,
176         .log2_chroma_h= 2,
177         .comp = {
178             {0,0,1,0,7},        /* Y */
179             {1,0,1,0,7},        /* U */
180             {2,0,1,0,7},        /* V */
181         },
182     },
183     [PIX_FMT_YUV411P] = {
184         .name = "yuv411p",
185         .nb_components= 3,
186         .log2_chroma_w= 2,
187         .log2_chroma_h= 0,
188         .comp = {
189             {0,0,1,0,7},        /* Y */
190             {1,0,1,0,7},        /* U */
191             {2,0,1,0,7},        /* V */
192         },
193     },
194     [PIX_FMT_GRAY8] = {
195         .name = "gray",
196         .nb_components= 1,
197         .log2_chroma_w= 0,
198         .log2_chroma_h= 0,
199         .comp = {
200             {0,0,1,0,7},        /* Y */
201         },
202         .flags = PIX_FMT_PAL,
203     },
204     [PIX_FMT_MONOWHITE] = {
205         .name = "monow",
206         .nb_components= 1,
207         .log2_chroma_w= 0,
208         .log2_chroma_h= 0,
209         .comp = {
210             {0,0,1,0,0},        /* Y */
211         },
212         .flags = PIX_FMT_BITSTREAM,
213     },
214     [PIX_FMT_MONOBLACK] = {
215         .name = "monob",
216         .nb_components= 1,
217         .log2_chroma_w= 0,
218         .log2_chroma_h= 0,
219         .comp = {
220             {0,0,1,7,0},        /* Y */
221         },
222         .flags = PIX_FMT_BITSTREAM,
223     },
224     [PIX_FMT_PAL8] = {
225         .name = "pal8",
226         .nb_components= 1,
227         .log2_chroma_w= 0,
228         .log2_chroma_h= 0,
229         .comp = {
230             {0,0,1,0,7},
231         },
232         .flags = PIX_FMT_PAL,
233     },
234     [PIX_FMT_YUVJ420P] = {
235         .name = "yuvj420p",
236         .nb_components= 3,
237         .log2_chroma_w= 1,
238         .log2_chroma_h= 1,
239         .comp = {
240             {0,0,1,0,7},        /* Y */
241             {1,0,1,0,7},        /* U */
242             {2,0,1,0,7},        /* V */
243         },
244     },
245     [PIX_FMT_YUVJ422P] = {
246         .name = "yuvj422p",
247         .nb_components= 3,
248         .log2_chroma_w= 1,
249         .log2_chroma_h= 0,
250         .comp = {
251             {0,0,1,0,7},        /* Y */
252             {1,0,1,0,7},        /* U */
253             {2,0,1,0,7},        /* V */
254         },
255     },
256     [PIX_FMT_YUVJ444P] = {
257         .name = "yuvj444p",
258         .nb_components= 3,
259         .log2_chroma_w= 0,
260         .log2_chroma_h= 0,
261         .comp = {
262             {0,0,1,0,7},        /* Y */
263             {1,0,1,0,7},        /* U */
264             {2,0,1,0,7},        /* V */
265         },
266     },
267     [PIX_FMT_XVMC_MPEG2_MC] = {
268         .name = "xvmcmc",
269         .flags = PIX_FMT_HWACCEL,
270     },
271     [PIX_FMT_XVMC_MPEG2_IDCT] = {
272         .name = "xvmcidct",
273         .flags = PIX_FMT_HWACCEL,
274     },
275     [PIX_FMT_UYVY422] = {
276         .name = "uyvy422",
277         .nb_components= 3,
278         .log2_chroma_w= 1,
279         .log2_chroma_h= 0,
280         .comp = {
281             {0,1,2,0,7},        /* Y */
282             {0,3,1,0,7},        /* U */
283             {0,3,3,0,7},        /* V */
284         },
285     },
286     [PIX_FMT_UYYVYY411] = {
287         .name = "uyyvyy411",
288         .nb_components= 3,
289         .log2_chroma_w= 2,
290         .log2_chroma_h= 0,
291         .comp = {
292             {0,3,2,0,7},        /* Y */
293             {0,5,1,0,7},        /* U */
294             {0,5,4,0,7},        /* V */
295         },
296     },
297     [PIX_FMT_BGR8] = {
298         .name = "bgr8",
299         .nb_components= 3,
300         .log2_chroma_w= 0,
301         .log2_chroma_h= 0,
302         .comp = {
303             {0,0,1,6,1},        /* B */
304             {0,0,1,3,2},        /* G */
305             {0,0,1,0,2},        /* R */
306         },
307         .flags = PIX_FMT_PAL,
308     },
309     [PIX_FMT_BGR4] = {
310         .name = "bgr4",
311         .nb_components= 3,
312         .log2_chroma_w= 0,
313         .log2_chroma_h= 0,
314         .comp = {
315             {0,3,1,0,0},        /* B */
316             {0,3,2,0,1},        /* G */
317             {0,3,4,0,0},        /* R */
318         },
319         .flags = PIX_FMT_BITSTREAM,
320     },
321     [PIX_FMT_BGR4_BYTE] = {
322         .name = "bgr4_byte",
323         .nb_components= 3,
324         .log2_chroma_w= 0,
325         .log2_chroma_h= 0,
326         .comp = {
327             {0,0,1,3,0},        /* B */
328             {0,0,1,1,1},        /* G */
329             {0,0,1,0,0},        /* R */
330         },
331         .flags = PIX_FMT_PAL,
332     },
333     [PIX_FMT_RGB8] = {
334         .name = "rgb8",
335         .nb_components= 3,
336         .log2_chroma_w= 0,
337         .log2_chroma_h= 0,
338         .comp = {
339             {0,0,1,6,1},        /* R */
340             {0,0,1,3,2},        /* G */
341             {0,0,1,0,2},        /* B */
342         },
343         .flags = PIX_FMT_PAL,
344     },
345     [PIX_FMT_RGB4] = {
346         .name = "rgb4",
347         .nb_components= 3,
348         .log2_chroma_w= 0,
349         .log2_chroma_h= 0,
350         .comp = {
351             {0,3,1,0,0},       /* R */
352             {0,3,2,0,1},       /* G */
353             {0,3,4,0,0},       /* B */
354         },
355         .flags = PIX_FMT_BITSTREAM,
356     },
357     [PIX_FMT_RGB4_BYTE] = {
358         .name = "rgb4_byte",
359         .nb_components= 3,
360         .log2_chroma_w= 0,
361         .log2_chroma_h= 0,
362         .comp = {
363             {0,0,1,3,0},        /* R */
364             {0,0,1,1,1},        /* G */
365             {0,0,1,0,0},        /* B */
366         },
367         .flags = PIX_FMT_PAL,
368     },
369     [PIX_FMT_NV12] = {
370         .name = "nv12",
371         .nb_components= 3,
372         .log2_chroma_w= 1,
373         .log2_chroma_h= 1,
374         .comp = {
375             {0,0,1,0,7},        /* Y */
376             {1,1,1,0,7},        /* U */
377             {1,1,2,0,7},        /* V */
378         },
379     },
380     [PIX_FMT_NV21] = {
381         .name = "nv21",
382         .nb_components= 3,
383         .log2_chroma_w= 1,
384         .log2_chroma_h= 1,
385         .comp = {
386             {0,0,1,0,7},        /* Y */
387             {1,1,1,0,7},        /* V */
388             {1,1,2,0,7},        /* U */
389         },
390     },
391     [PIX_FMT_ARGB] = {
392         .name = "argb",
393         .nb_components= 4,
394         .log2_chroma_w= 0,
395         .log2_chroma_h= 0,
396         .comp = {
397             {0,3,1,0,7},        /* A */
398             {0,3,2,0,7},        /* R */
399             {0,3,3,0,7},        /* G */
400             {0,3,4,0,7},        /* B */
401         },
402     },
403     [PIX_FMT_RGBA] = {
404         .name = "rgba",
405         .nb_components= 4,
406         .log2_chroma_w= 0,
407         .log2_chroma_h= 0,
408         .comp = {
409             {0,3,1,0,7},        /* R */
410             {0,3,2,0,7},        /* G */
411             {0,3,3,0,7},        /* B */
412             {0,3,4,0,7},        /* A */
413         },
414     },
415     [PIX_FMT_ABGR] = {
416         .name = "abgr",
417         .nb_components= 4,
418         .log2_chroma_w= 0,
419         .log2_chroma_h= 0,
420         .comp = {
421             {0,3,1,0,7},        /* A */
422             {0,3,2,0,7},        /* B */
423             {0,3,3,0,7},        /* G */
424             {0,3,4,0,7},        /* R */
425         },
426     },
427     [PIX_FMT_BGRA] = {
428         .name = "bgra",
429         .nb_components= 4,
430         .log2_chroma_w= 0,
431         .log2_chroma_h= 0,
432         .comp = {
433             {0,3,1,0,7},        /* B */
434             {0,3,2,0,7},        /* G */
435             {0,3,3,0,7},        /* R */
436             {0,3,4,0,7},        /* A */
437         },
438     },
439     [PIX_FMT_GRAY16BE] = {
440         .name = "gray16be",
441         .nb_components= 1,
442         .log2_chroma_w= 0,
443         .log2_chroma_h= 0,
444         .comp = {
445             {0,1,1,0,15},       /* Y */
446         },
447         .flags = PIX_FMT_BE,
448     },
449     [PIX_FMT_GRAY16LE] = {
450         .name = "gray16le",
451         .nb_components= 1,
452         .log2_chroma_w= 0,
453         .log2_chroma_h= 0,
454         .comp = {
455             {0,1,1,0,15},       /* Y */
456         },
457     },
458     [PIX_FMT_YUV440P] = {
459         .name = "yuv440p",
460         .nb_components= 3,
461         .log2_chroma_w= 0,
462         .log2_chroma_h= 1,
463         .comp = {
464             {0,0,1,0,7},        /* Y */
465             {1,0,1,0,7},        /* U */
466             {2,0,1,0,7},        /* V */
467         },
468     },
469     [PIX_FMT_YUVJ440P] = {
470         .name = "yuvj440p",
471         .nb_components= 3,
472         .log2_chroma_w= 0,
473         .log2_chroma_h= 1,
474         .comp = {
475             {0,0,1,0,7},        /* Y */
476             {1,0,1,0,7},        /* U */
477             {2,0,1,0,7},        /* V */
478         },
479     },
480     [PIX_FMT_YUVA420P] = {
481         .name = "yuva420p",
482         .nb_components= 4,
483         .log2_chroma_w= 1,
484         .log2_chroma_h= 1,
485         .comp = {
486             {0,0,1,0,7},        /* Y */
487             {1,0,1,0,7},        /* U */
488             {2,0,1,0,7},        /* V */
489             {3,0,1,0,7},        /* A */
490         },
491     },
492     [PIX_FMT_VDPAU_H264] = {
493         .name = "vdpau_h264",
494         .log2_chroma_w = 1,
495         .log2_chroma_h = 1,
496         .flags = PIX_FMT_HWACCEL,
497     },
498     [PIX_FMT_VDPAU_MPEG1] = {
499         .name = "vdpau_mpeg1",
500         .log2_chroma_w = 1,
501         .log2_chroma_h = 1,
502         .flags = PIX_FMT_HWACCEL,
503     },
504     [PIX_FMT_VDPAU_MPEG2] = {
505         .name = "vdpau_mpeg2",
506         .log2_chroma_w = 1,
507         .log2_chroma_h = 1,
508         .flags = PIX_FMT_HWACCEL,
509     },
510     [PIX_FMT_VDPAU_WMV3] = {
511         .name = "vdpau_wmv3",
512         .log2_chroma_w = 1,
513         .log2_chroma_h = 1,
514         .flags = PIX_FMT_HWACCEL,
515     },
516     [PIX_FMT_VDPAU_VC1] = {
517         .name = "vdpau_vc1",
518         .log2_chroma_w = 1,
519         .log2_chroma_h = 1,
520         .flags = PIX_FMT_HWACCEL,
521     },
522     [PIX_FMT_VDPAU_MPEG4] = {
523         .name = "vdpau_mpeg4",
524         .log2_chroma_w = 1,
525         .log2_chroma_h = 1,
526         .flags = PIX_FMT_HWACCEL,
527     },
528     [PIX_FMT_RGB48BE] = {
529         .name = "rgb48be",
530         .nb_components= 3,
531         .log2_chroma_w= 0,
532         .log2_chroma_h= 0,
533         .comp = {
534             {0,5,1,0,15},       /* R */
535             {0,5,3,0,15},       /* G */
536             {0,5,5,0,15},       /* B */
537         },
538         .flags = PIX_FMT_BE,
539     },
540     [PIX_FMT_RGB48LE] = {
541         .name = "rgb48le",
542         .nb_components= 3,
543         .log2_chroma_w= 0,
544         .log2_chroma_h= 0,
545         .comp = {
546             {0,5,1,0,15},       /* R */
547             {0,5,3,0,15},       /* G */
548             {0,5,5,0,15},       /* B */
549         },
550     },
551     [PIX_FMT_RGB565BE] = {
552         .name = "rgb565be",
553         .nb_components= 3,
554         .log2_chroma_w= 0,
555         .log2_chroma_h= 0,
556         .comp = {
557             {0,1,0,3,4},        /* R */
558             {0,1,1,5,5},        /* G */
559             {0,1,1,0,4},        /* B */
560         },
561         .flags = PIX_FMT_BE,
562     },
563     [PIX_FMT_RGB565LE] = {
564         .name = "rgb565le",
565         .nb_components= 3,
566         .log2_chroma_w= 0,
567         .log2_chroma_h= 0,
568         .comp = {
569             {0,1,2,3,4},        /* R */
570             {0,1,1,5,5},        /* G */
571             {0,1,1,0,4},        /* B */
572         },
573     },
574     [PIX_FMT_RGB555BE] = {
575         .name = "rgb555be",
576         .nb_components= 3,
577         .log2_chroma_w= 0,
578         .log2_chroma_h= 0,
579         .comp = {
580             {0,1,0,2,4},        /* R */
581             {0,1,1,5,4},        /* G */
582             {0,1,1,0,4},        /* B */
583         },
584         .flags = PIX_FMT_BE,
585     },
586     [PIX_FMT_RGB555LE] = {
587         .name = "rgb555le",
588         .nb_components= 3,
589         .log2_chroma_w= 0,
590         .log2_chroma_h= 0,
591         .comp = {
592             {0,1,2,2,4},        /* R */
593             {0,1,1,5,4},        /* G */
594             {0,1,1,0,4},        /* B */
595         },
596     },
597     [PIX_FMT_RGB444BE] = {
598         .name = "rgb444be",
599         .nb_components= 3,
600         .log2_chroma_w= 0,
601         .log2_chroma_h= 0,
602         .comp = {
603             {0,1,0,0,3},        /* R */
604             {0,1,1,4,3},        /* G */
605             {0,1,1,0,3},        /* B */
606         },
607         .flags = PIX_FMT_BE,
608     },
609     [PIX_FMT_RGB444LE] = {
610         .name = "rgb444le",
611         .nb_components= 3,
612         .log2_chroma_w= 0,
613         .log2_chroma_h= 0,
614         .comp = {
615             {0,1,2,0,3},        /* R */
616             {0,1,1,4,3},        /* G */
617             {0,1,1,0,3},        /* B */
618         },
619     },
620     [PIX_FMT_BGR565BE] = {
621         .name = "bgr565be",
622         .nb_components= 3,
623         .log2_chroma_w= 0,
624         .log2_chroma_h= 0,
625         .comp = {
626             {0,1,0,3,4},        /* B */
627             {0,1,1,5,5},        /* G */
628             {0,1,1,0,4},        /* R */
629         },
630         .flags = PIX_FMT_BE,
631     },
632     [PIX_FMT_BGR565LE] = {
633         .name = "bgr565le",
634         .nb_components= 3,
635         .log2_chroma_w= 0,
636         .log2_chroma_h= 0,
637         .comp = {
638             {0,1,2,3,4},        /* B */
639             {0,1,1,5,5},        /* G */
640             {0,1,1,0,4},        /* R */
641         },
642     },
643     [PIX_FMT_BGR555BE] = {
644         .name = "bgr555be",
645         .nb_components= 3,
646         .log2_chroma_w= 0,
647         .log2_chroma_h= 0,
648         .comp = {
649             {0,1,0,2,4},       /* B */
650             {0,1,1,5,4},       /* G */
651             {0,1,1,0,4},       /* R */
652         },
653         .flags = PIX_FMT_BE,
654      },
655     [PIX_FMT_BGR555LE] = {
656         .name = "bgr555le",
657         .nb_components= 3,
658         .log2_chroma_w= 0,
659         .log2_chroma_h= 0,
660         .comp = {
661             {0,1,2,2,4},        /* B */
662             {0,1,1,5,4},        /* G */
663             {0,1,1,0,4},        /* R */
664         },
665     },
666     [PIX_FMT_BGR444BE] = {
667         .name = "bgr444be",
668         .nb_components= 3,
669         .log2_chroma_w= 0,
670         .log2_chroma_h= 0,
671         .comp = {
672             {0,1,0,0,3},       /* B */
673             {0,1,1,4,3},       /* G */
674             {0,1,1,0,3},       /* R */
675         },
676         .flags = PIX_FMT_BE,
677      },
678     [PIX_FMT_BGR444LE] = {
679         .name = "bgr444le",
680         .nb_components= 3,
681         .log2_chroma_w= 0,
682         .log2_chroma_h= 0,
683         .comp = {
684             {0,1,2,0,3},        /* B */
685             {0,1,1,4,3},        /* G */
686             {0,1,1,0,3},        /* R */
687         },
688     },
689     [PIX_FMT_VAAPI_MOCO] = {
690         .name = "vaapi_moco",
691         .log2_chroma_w = 1,
692         .log2_chroma_h = 1,
693         .flags = PIX_FMT_HWACCEL,
694     },
695     [PIX_FMT_VAAPI_IDCT] = {
696         .name = "vaapi_idct",
697         .log2_chroma_w = 1,
698         .log2_chroma_h = 1,
699         .flags = PIX_FMT_HWACCEL,
700     },
701     [PIX_FMT_VAAPI_VLD] = {
702         .name = "vaapi_vld",
703         .log2_chroma_w = 1,
704         .log2_chroma_h = 1,
705         .flags = PIX_FMT_HWACCEL,
706     },
707     [PIX_FMT_YUV420P16LE] = {
708         .name = "yuv420p16le",
709         .nb_components= 3,
710         .log2_chroma_w= 1,
711         .log2_chroma_h= 1,
712         .comp = {
713             {0,1,1,0,15},        /* Y */
714             {1,1,1,0,15},        /* U */
715             {2,1,1,0,15},        /* V */
716         },
717     },
718     [PIX_FMT_YUV420P16BE] = {
719         .name = "yuv420p16be",
720         .nb_components= 3,
721         .log2_chroma_w= 1,
722         .log2_chroma_h= 1,
723         .comp = {
724             {0,1,1,0,15},        /* Y */
725             {1,1,1,0,15},        /* U */
726             {2,1,1,0,15},        /* V */
727         },
728         .flags = PIX_FMT_BE,
729     },
730     [PIX_FMT_YUV422P16LE] = {
731         .name = "yuv422p16le",
732         .nb_components= 3,
733         .log2_chroma_w= 1,
734         .log2_chroma_h= 0,
735         .comp = {
736             {0,1,1,0,15},        /* Y */
737             {1,1,1,0,15},        /* U */
738             {2,1,1,0,15},        /* V */
739         },
740     },
741     [PIX_FMT_YUV422P16BE] = {
742         .name = "yuv422p16be",
743         .nb_components= 3,
744         .log2_chroma_w= 1,
745         .log2_chroma_h= 0,
746         .comp = {
747             {0,1,1,0,15},        /* Y */
748             {1,1,1,0,15},        /* U */
749             {2,1,1,0,15},        /* V */
750         },
751         .flags = PIX_FMT_BE,
752     },
753     [PIX_FMT_YUV444P16LE] = {
754         .name = "yuv444p16le",
755         .nb_components= 3,
756         .log2_chroma_w= 0,
757         .log2_chroma_h= 0,
758         .comp = {
759             {0,1,1,0,15},        /* Y */
760             {1,1,1,0,15},        /* U */
761             {2,1,1,0,15},        /* V */
762         },
763     },
764     [PIX_FMT_YUV444P16BE] = {
765         .name = "yuv444p16be",
766         .nb_components= 3,
767         .log2_chroma_w= 0,
768         .log2_chroma_h= 0,
769         .comp = {
770             {0,1,1,0,15},        /* Y */
771             {1,1,1,0,15},        /* U */
772             {2,1,1,0,15},        /* V */
773         },
774         .flags = PIX_FMT_BE,
775     },
776     [PIX_FMT_DXVA2_VLD] = {
777         .name = "dxva2_vld",
778         .log2_chroma_w = 1,
779         .log2_chroma_h = 1,
780         .flags = PIX_FMT_HWACCEL,
781     },
782     [PIX_FMT_Y400A] = {
783         .name = "y400a",
784         .nb_components= 2,
785         .comp = {
786             {0,1,1,0,7},        /* Y */
787             {0,1,2,0,7},        /* A */
788         },
789     },
790 };
791
792 static enum PixelFormat get_pix_fmt_internal(const char *name)
793 {
794     enum PixelFormat pix_fmt;
795
796     for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
797         if (av_pix_fmt_descriptors[pix_fmt].name &&
798             !strcmp(av_pix_fmt_descriptors[pix_fmt].name, name))
799             return pix_fmt;
800
801     return PIX_FMT_NONE;
802 }
803
804 #if HAVE_BIGENDIAN
805 #   define X_NE(be, le) be
806 #else
807 #   define X_NE(be, le) le
808 #endif
809
810 enum PixelFormat av_get_pix_fmt(const char *name)
811 {
812     enum PixelFormat pix_fmt;
813
814     if (!strcmp(name, "rgb32"))
815         name = X_NE("argb", "bgra");
816     else if (!strcmp(name, "bgr32"))
817         name = X_NE("abgr", "rgba");
818
819     pix_fmt = get_pix_fmt_internal(name);
820     if (pix_fmt == PIX_FMT_NONE) {
821         char name2[32];
822
823         snprintf(name2, sizeof(name2), "%s%s", name, X_NE("be", "le"));
824         pix_fmt = get_pix_fmt_internal(name2);
825     }
826     return pix_fmt;
827 }
828
829 int av_get_bits_per_pixel(const AVPixFmtDescriptor *pixdesc)
830 {
831     int c, bits = 0;
832     int log2_pixels = pixdesc->log2_chroma_w + pixdesc->log2_chroma_h;
833
834     for (c = 0; c < pixdesc->nb_components; c++) {
835         int s = c==1 || c==2 ? 0 : log2_pixels;
836         bits += (pixdesc->comp[c].depth_minus1+1) << s;
837     }
838
839     return bits >> log2_pixels;
840 }