Statistics
| Branch: | Revision:

ffmpeg / libavcodec / imgconvert.c @ 6d34323e

History | View | Annotate | Download (32.3 KB)

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
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 "internal.h"
36
#include "imgconvert.h"
37
#include "libavutil/colorspace.h"
38
#include "libavutil/pixdesc.h"
39
#include "libavcore/imgutils.h"
40
#include "libavcore/internal.h"
41

    
42
#if HAVE_MMX && HAVE_YASM
43
#include "x86/dsputil_mmx.h"
44
#endif
45

    
46
#define xglue(x, y) x ## y
47
#define glue(x, y) xglue(x, y)
48

    
49
#define FF_COLOR_RGB      0 /**< RGB color space */
50
#define FF_COLOR_GRAY     1 /**< gray color space */
51
#define FF_COLOR_YUV      2 /**< YUV color space. 16 <= Y <= 235, 16 <= U, V <= 240 */
52
#define FF_COLOR_YUV_JPEG 3 /**< YUV color space. 0 <= Y <= 255, 0 <= U, V <= 255 */
53

    
54
#define FF_PIXEL_PLANAR   0 /**< each channel has one component in AVPicture */
55
#define FF_PIXEL_PACKED   1 /**< only one components containing all the channels */
56
#define FF_PIXEL_PALETTE  2  /**< one components containing indexes for a palette */
57

    
58
#if HAVE_MMX && HAVE_YASM
59
#define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
60
#define deinterlace_line         ff_deinterlace_line_mmx
61
#else
62
#define deinterlace_line_inplace deinterlace_line_inplace_c
63
#define deinterlace_line         deinterlace_line_c
64
#endif
65

    
66
typedef struct PixFmtInfo {
67
    uint8_t nb_channels;     /**< number of channels (including alpha) */
68
    uint8_t color_type;      /**< color type (see FF_COLOR_xxx constants) */
69
    uint8_t pixel_type;      /**< pixel storage type (see FF_PIXEL_xxx constants) */
70
    uint8_t is_alpha : 1;    /**< true if alpha can be specified */
71
    uint8_t depth;           /**< bit depth of the color components */
72
} PixFmtInfo;
73

    
74
/* this table gives more information about formats */
75
static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
76
    /* YUV formats */
77
    [PIX_FMT_YUV420P] = {
78
        .nb_channels = 3,
79
        .color_type = FF_COLOR_YUV,
80
        .pixel_type = FF_PIXEL_PLANAR,
81
        .depth = 8,
82
    },
83
    [PIX_FMT_YUV422P] = {
84
        .nb_channels = 3,
85
        .color_type = FF_COLOR_YUV,
86
        .pixel_type = FF_PIXEL_PLANAR,
87
        .depth = 8,
88
    },
89
    [PIX_FMT_YUV444P] = {
90
        .nb_channels = 3,
91
        .color_type = FF_COLOR_YUV,
92
        .pixel_type = FF_PIXEL_PLANAR,
93
        .depth = 8,
94
    },
95
    [PIX_FMT_YUYV422] = {
96
        .nb_channels = 1,
97
        .color_type = FF_COLOR_YUV,
98
        .pixel_type = FF_PIXEL_PACKED,
99
        .depth = 8,
100
    },
101
    [PIX_FMT_UYVY422] = {
102
        .nb_channels = 1,
103
        .color_type = FF_COLOR_YUV,
104
        .pixel_type = FF_PIXEL_PACKED,
105
        .depth = 8,
106
    },
107
    [PIX_FMT_YUV410P] = {
108
        .nb_channels = 3,
109
        .color_type = FF_COLOR_YUV,
110
        .pixel_type = FF_PIXEL_PLANAR,
111
        .depth = 8,
112
    },
113
    [PIX_FMT_YUV411P] = {
114
        .nb_channels = 3,
115
        .color_type = FF_COLOR_YUV,
116
        .pixel_type = FF_PIXEL_PLANAR,
117
        .depth = 8,
118
    },
119
    [PIX_FMT_YUV440P] = {
120
        .nb_channels = 3,
121
        .color_type = FF_COLOR_YUV,
122
        .pixel_type = FF_PIXEL_PLANAR,
123
        .depth = 8,
124
    },
125
    [PIX_FMT_YUV420P16LE] = {
126
        .nb_channels = 3,
127
        .color_type = FF_COLOR_YUV,
128
        .pixel_type = FF_PIXEL_PLANAR,
129
        .depth = 16,
130
    },
131
    [PIX_FMT_YUV422P16LE] = {
132
        .nb_channels = 3,
133
        .color_type = FF_COLOR_YUV,
134
        .pixel_type = FF_PIXEL_PLANAR,
135
        .depth = 16,
136
    },
137
    [PIX_FMT_YUV444P16LE] = {
138
        .nb_channels = 3,
139
        .color_type = FF_COLOR_YUV,
140
        .pixel_type = FF_PIXEL_PLANAR,
141
        .depth = 16,
142
    },
143
    [PIX_FMT_YUV420P16BE] = {
144
        .nb_channels = 3,
145
        .color_type = FF_COLOR_YUV,
146
        .pixel_type = FF_PIXEL_PLANAR,
147
        .depth = 16,
148
    },
149
    [PIX_FMT_YUV422P16BE] = {
150
        .nb_channels = 3,
151
        .color_type = FF_COLOR_YUV,
152
        .pixel_type = FF_PIXEL_PLANAR,
153
        .depth = 16,
154
    },
155
    [PIX_FMT_YUV444P16BE] = {
156
        .nb_channels = 3,
157
        .color_type = FF_COLOR_YUV,
158
        .pixel_type = FF_PIXEL_PLANAR,
159
        .depth = 16,
160
    },
161

    
162

    
163
    /* YUV formats with alpha plane */
164
    [PIX_FMT_YUVA420P] = {
165
        .nb_channels = 4,
166
        .color_type = FF_COLOR_YUV,
167
        .pixel_type = FF_PIXEL_PLANAR,
168
        .depth = 8,
169
    },
170

    
171
    /* JPEG YUV */
172
    [PIX_FMT_YUVJ420P] = {
173
        .nb_channels = 3,
174
        .color_type = FF_COLOR_YUV_JPEG,
175
        .pixel_type = FF_PIXEL_PLANAR,
176
        .depth = 8,
177
    },
178
    [PIX_FMT_YUVJ422P] = {
179
        .nb_channels = 3,
180
        .color_type = FF_COLOR_YUV_JPEG,
181
        .pixel_type = FF_PIXEL_PLANAR,
182
        .depth = 8,
183
    },
184
    [PIX_FMT_YUVJ444P] = {
185
        .nb_channels = 3,
186
        .color_type = FF_COLOR_YUV_JPEG,
187
        .pixel_type = FF_PIXEL_PLANAR,
188
        .depth = 8,
189
    },
190
    [PIX_FMT_YUVJ440P] = {
191
        .nb_channels = 3,
192
        .color_type = FF_COLOR_YUV_JPEG,
193
        .pixel_type = FF_PIXEL_PLANAR,
194
        .depth = 8,
195
    },
196

    
197
    /* RGB formats */
198
    [PIX_FMT_RGB24] = {
199
        .nb_channels = 3,
200
        .color_type = FF_COLOR_RGB,
201
        .pixel_type = FF_PIXEL_PACKED,
202
        .depth = 8,
203
    },
204
    [PIX_FMT_BGR24] = {
205
        .nb_channels = 3,
206
        .color_type = FF_COLOR_RGB,
207
        .pixel_type = FF_PIXEL_PACKED,
208
        .depth = 8,
209
    },
210
    [PIX_FMT_ARGB] = {
211
        .nb_channels = 4, .is_alpha = 1,
212
        .color_type = FF_COLOR_RGB,
213
        .pixel_type = FF_PIXEL_PACKED,
214
        .depth = 8,
215
    },
216
    [PIX_FMT_RGB48BE] = {
217
        .nb_channels = 3,
218
        .color_type = FF_COLOR_RGB,
219
        .pixel_type = FF_PIXEL_PACKED,
220
        .depth = 16,
221
    },
222
    [PIX_FMT_RGB48LE] = {
223
        .nb_channels = 3,
224
        .color_type = FF_COLOR_RGB,
225
        .pixel_type = FF_PIXEL_PACKED,
226
        .depth = 16,
227
    },
228
    [PIX_FMT_RGB565BE] = {
229
        .nb_channels = 3,
230
        .color_type = FF_COLOR_RGB,
231
        .pixel_type = FF_PIXEL_PACKED,
232
        .depth = 5,
233
    },
234
    [PIX_FMT_RGB565LE] = {
235
        .nb_channels = 3,
236
        .color_type = FF_COLOR_RGB,
237
        .pixel_type = FF_PIXEL_PACKED,
238
        .depth = 5,
239
    },
240
    [PIX_FMT_RGB555BE] = {
241
        .nb_channels = 3,
242
        .color_type = FF_COLOR_RGB,
243
        .pixel_type = FF_PIXEL_PACKED,
244
        .depth = 5,
245
    },
246
    [PIX_FMT_RGB555LE] = {
247
        .nb_channels = 3,
248
        .color_type = FF_COLOR_RGB,
249
        .pixel_type = FF_PIXEL_PACKED,
250
        .depth = 5,
251
    },
252
    [PIX_FMT_RGB444BE] = {
253
        .nb_channels = 3,
254
        .color_type = FF_COLOR_RGB,
255
        .pixel_type = FF_PIXEL_PACKED,
256
        .depth = 4,
257
    },
258
    [PIX_FMT_RGB444LE] = {
259
        .nb_channels = 3,
260
        .color_type = FF_COLOR_RGB,
261
        .pixel_type = FF_PIXEL_PACKED,
262
        .depth = 4,
263
    },
264

    
265
    /* gray / mono formats */
266
    [PIX_FMT_GRAY16BE] = {
267
        .nb_channels = 1,
268
        .color_type = FF_COLOR_GRAY,
269
        .pixel_type = FF_PIXEL_PLANAR,
270
        .depth = 16,
271
    },
272
    [PIX_FMT_GRAY16LE] = {
273
        .nb_channels = 1,
274
        .color_type = FF_COLOR_GRAY,
275
        .pixel_type = FF_PIXEL_PLANAR,
276
        .depth = 16,
277
    },
278
    [PIX_FMT_GRAY8] = {
279
        .nb_channels = 1,
280
        .color_type = FF_COLOR_GRAY,
281
        .pixel_type = FF_PIXEL_PLANAR,
282
        .depth = 8,
283
    },
284
    [PIX_FMT_MONOWHITE] = {
285
        .nb_channels = 1,
286
        .color_type = FF_COLOR_GRAY,
287
        .pixel_type = FF_PIXEL_PLANAR,
288
        .depth = 1,
289
    },
290
    [PIX_FMT_MONOBLACK] = {
291
        .nb_channels = 1,
292
        .color_type = FF_COLOR_GRAY,
293
        .pixel_type = FF_PIXEL_PLANAR,
294
        .depth = 1,
295
    },
296

    
297
    /* paletted formats */
298
    [PIX_FMT_PAL8] = {
299
        .nb_channels = 4, .is_alpha = 1,
300
        .color_type = FF_COLOR_RGB,
301
        .pixel_type = FF_PIXEL_PALETTE,
302
        .depth = 8,
303
    },
304
    [PIX_FMT_UYYVYY411] = {
305
        .nb_channels = 1,
306
        .color_type = FF_COLOR_YUV,
307
        .pixel_type = FF_PIXEL_PACKED,
308
        .depth = 8,
309
    },
310
    [PIX_FMT_ABGR] = {
311
        .nb_channels = 4, .is_alpha = 1,
312
        .color_type = FF_COLOR_RGB,
313
        .pixel_type = FF_PIXEL_PACKED,
314
        .depth = 8,
315
    },
316
    [PIX_FMT_BGR565BE] = {
317
        .nb_channels = 3,
318
        .color_type = FF_COLOR_RGB,
319
        .pixel_type = FF_PIXEL_PACKED,
320
        .depth = 5,
321
    },
322
    [PIX_FMT_BGR565LE] = {
323
        .nb_channels = 3,
324
        .color_type = FF_COLOR_RGB,
325
        .pixel_type = FF_PIXEL_PACKED,
326
        .depth = 5,
327
    },
328
    [PIX_FMT_BGR555BE] = {
329
        .nb_channels = 3,
330
        .color_type = FF_COLOR_RGB,
331
        .pixel_type = FF_PIXEL_PACKED,
332
        .depth = 5,
333
    },
334
    [PIX_FMT_BGR555LE] = {
335
        .nb_channels = 3,
336
        .color_type = FF_COLOR_RGB,
337
        .pixel_type = FF_PIXEL_PACKED,
338
        .depth = 5,
339
    },
340
    [PIX_FMT_BGR444BE] = {
341
        .nb_channels = 3,
342
        .color_type = FF_COLOR_RGB,
343
        .pixel_type = FF_PIXEL_PACKED,
344
        .depth = 4,
345
    },
346
    [PIX_FMT_BGR444LE] = {
347
        .nb_channels = 3,
348
        .color_type = FF_COLOR_RGB,
349
        .pixel_type = FF_PIXEL_PACKED,
350
        .depth = 4,
351
    },
352
    [PIX_FMT_RGB8] = {
353
        .nb_channels = 1,
354
        .color_type = FF_COLOR_RGB,
355
        .pixel_type = FF_PIXEL_PACKED,
356
        .depth = 8,
357
    },
358
    [PIX_FMT_RGB4] = {
359
        .nb_channels = 1,
360
        .color_type = FF_COLOR_RGB,
361
        .pixel_type = FF_PIXEL_PACKED,
362
        .depth = 4,
363
    },
364
    [PIX_FMT_RGB4_BYTE] = {
365
        .nb_channels = 1,
366
        .color_type = FF_COLOR_RGB,
367
        .pixel_type = FF_PIXEL_PACKED,
368
        .depth = 8,
369
    },
370
    [PIX_FMT_BGR8] = {
371
        .nb_channels = 1,
372
        .color_type = FF_COLOR_RGB,
373
        .pixel_type = FF_PIXEL_PACKED,
374
        .depth = 8,
375
    },
376
    [PIX_FMT_BGR4] = {
377
        .nb_channels = 1,
378
        .color_type = FF_COLOR_RGB,
379
        .pixel_type = FF_PIXEL_PACKED,
380
        .depth = 4,
381
    },
382
    [PIX_FMT_BGR4_BYTE] = {
383
        .nb_channels = 1,
384
        .color_type = FF_COLOR_RGB,
385
        .pixel_type = FF_PIXEL_PACKED,
386
        .depth = 8,
387
    },
388
    [PIX_FMT_NV12] = {
389
        .nb_channels = 2,
390
        .color_type = FF_COLOR_YUV,
391
        .pixel_type = FF_PIXEL_PLANAR,
392
        .depth = 8,
393
    },
394
    [PIX_FMT_NV21] = {
395
        .nb_channels = 2,
396
        .color_type = FF_COLOR_YUV,
397
        .pixel_type = FF_PIXEL_PLANAR,
398
        .depth = 8,
399
    },
400

    
401
    [PIX_FMT_BGRA] = {
402
        .nb_channels = 4, .is_alpha = 1,
403
        .color_type = FF_COLOR_RGB,
404
        .pixel_type = FF_PIXEL_PACKED,
405
        .depth = 8,
406
    },
407
    [PIX_FMT_RGBA] = {
408
        .nb_channels = 4, .is_alpha = 1,
409
        .color_type = FF_COLOR_RGB,
410
        .pixel_type = FF_PIXEL_PACKED,
411
        .depth = 8,
412
    },
413
};
414

    
415
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
416
{
417
    *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
418
    *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
419
}
420

    
421
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
422
{
423
    if ((unsigned)pix_fmt >= PIX_FMT_NB)
424
        return NULL;
425
    else
426
        return av_pix_fmt_descriptors[pix_fmt].name;
427
}
428

    
429
#if LIBAVCODEC_VERSION_MAJOR < 53
430
enum PixelFormat avcodec_get_pix_fmt(const char *name)
431
{
432
    return av_get_pix_fmt(name);
433
}
434

    
435
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
436
{
437
    av_get_pix_fmt_string(buf, buf_size, pix_fmt);
438
}
439
#endif
440

    
441
int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
442
{
443
    return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
444
}
445

    
446
#if LIBAVCODEC_VERSION_MAJOR < 53
447
int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
448
    return ff_set_systematic_pal2(pal, pix_fmt);
449
}
450

    
451
int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
452
{
453
    return av_image_fill_linesizes(picture->linesize, pix_fmt, width);
454
}
455

    
456
int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
457
                    int height)
458
{
459
    return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
460
}
461
#endif
462

    
463
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
464
                   enum PixelFormat pix_fmt, int width, int height)
465
{
466
    int ret;
467

    
468
    if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
469
        return ret;
470

    
471
    if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
472
        return ret;
473

    
474
    return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
475
}
476

    
477
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
478
                     unsigned char *dest, int dest_size)
479
{
480
    int i, j, nb_planes = 0, linesizes[4];
481
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
482
    int size = avpicture_get_size(pix_fmt, width, height);
483

    
484
    if (size > dest_size || size < 0)
485
        return AVERROR(EINVAL);
486

    
487
    for (i = 0; i < desc->nb_components; i++)
488
        nb_planes = FFMAX(desc->comp[i].plane, nb_planes);
489
    nb_planes++;
490

    
491
    av_image_fill_linesizes(linesizes, pix_fmt, width);
492
    for (i = 0; i < nb_planes; i++) {
493
        int h, shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
494
        const unsigned char *s = src->data[i];
495
        h = (height + (1 << shift) - 1) >> shift;
496

    
497
        for (j = 0; j < h; j++) {
498
            memcpy(dest, s, linesizes[i]);
499
            dest += linesizes[i];
500
            s += src->linesize[i];
501
        }
502
    }
503

    
504
    if (desc->flags & PIX_FMT_PAL)
505
        memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
506

    
507
    return size;
508
}
509

    
510
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
511
{
512
    AVPicture dummy_pict;
513
    if(av_image_check_size(width, height, 0, NULL))
514
        return -1;
515
    switch (pix_fmt) {
516
    case PIX_FMT_RGB8:
517
    case PIX_FMT_BGR8:
518
    case PIX_FMT_RGB4_BYTE:
519
    case PIX_FMT_BGR4_BYTE:
520
    case PIX_FMT_GRAY8:
521
        // do not include palette for these pseudo-paletted formats
522
        return width * height;
523
    }
524
    return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
525
}
526

    
527
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
528
                             int has_alpha)
529
{
530
    const PixFmtInfo *pf, *ps;
531
    const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
532
    const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
533
    int loss;
534

    
535
    ps = &pix_fmt_info[src_pix_fmt];
536

    
537
    /* compute loss */
538
    loss = 0;
539
    pf = &pix_fmt_info[dst_pix_fmt];
540
    if (pf->depth < ps->depth ||
541
        ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE ||
542
          dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) &&
543
         (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE ||
544
          src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE)))
545
        loss |= FF_LOSS_DEPTH;
546
    if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
547
        dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
548
        loss |= FF_LOSS_RESOLUTION;
549
    switch(pf->color_type) {
550
    case FF_COLOR_RGB:
551
        if (ps->color_type != FF_COLOR_RGB &&
552
            ps->color_type != FF_COLOR_GRAY)
553
            loss |= FF_LOSS_COLORSPACE;
554
        break;
555
    case FF_COLOR_GRAY:
556
        if (ps->color_type != FF_COLOR_GRAY)
557
            loss |= FF_LOSS_COLORSPACE;
558
        break;
559
    case FF_COLOR_YUV:
560
        if (ps->color_type != FF_COLOR_YUV)
561
            loss |= FF_LOSS_COLORSPACE;
562
        break;
563
    case FF_COLOR_YUV_JPEG:
564
        if (ps->color_type != FF_COLOR_YUV_JPEG &&
565
            ps->color_type != FF_COLOR_YUV &&
566
            ps->color_type != FF_COLOR_GRAY)
567
            loss |= FF_LOSS_COLORSPACE;
568
        break;
569
    default:
570
        /* fail safe test */
571
        if (ps->color_type != pf->color_type)
572
            loss |= FF_LOSS_COLORSPACE;
573
        break;
574
    }
575
    if (pf->color_type == FF_COLOR_GRAY &&
576
        ps->color_type != FF_COLOR_GRAY)
577
        loss |= FF_LOSS_CHROMA;
578
    if (!pf->is_alpha && (ps->is_alpha && has_alpha))
579
        loss |= FF_LOSS_ALPHA;
580
    if (pf->pixel_type == FF_PIXEL_PALETTE &&
581
        (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
582
        loss |= FF_LOSS_COLORQUANT;
583
    return loss;
584
}
585

    
586
static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
587
{
588
    int bits;
589
    const PixFmtInfo *pf;
590
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
591

    
592
    pf = &pix_fmt_info[pix_fmt];
593
    switch(pf->pixel_type) {
594
    case FF_PIXEL_PACKED:
595
        switch(pix_fmt) {
596
        case PIX_FMT_YUYV422:
597
        case PIX_FMT_UYVY422:
598
        case PIX_FMT_RGB565BE:
599
        case PIX_FMT_RGB565LE:
600
        case PIX_FMT_RGB555BE:
601
        case PIX_FMT_RGB555LE:
602
        case PIX_FMT_RGB444BE:
603
        case PIX_FMT_RGB444LE:
604
        case PIX_FMT_BGR565BE:
605
        case PIX_FMT_BGR565LE:
606
        case PIX_FMT_BGR555BE:
607
        case PIX_FMT_BGR555LE:
608
        case PIX_FMT_BGR444BE:
609
        case PIX_FMT_BGR444LE:
610
            bits = 16;
611
            break;
612
        case PIX_FMT_UYYVYY411:
613
            bits = 12;
614
            break;
615
        default:
616
            bits = pf->depth * pf->nb_channels;
617
            break;
618
        }
619
        break;
620
    case FF_PIXEL_PLANAR:
621
        if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
622
            bits = pf->depth * pf->nb_channels;
623
        } else {
624
            bits = pf->depth + ((2 * pf->depth) >>
625
                                (desc->log2_chroma_w + desc->log2_chroma_h));
626
        }
627
        break;
628
    case FF_PIXEL_PALETTE:
629
        bits = 8;
630
        break;
631
    default:
632
        bits = -1;
633
        break;
634
    }
635
    return bits;
636
}
637

    
638
static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
639
                                      enum PixelFormat src_pix_fmt,
640
                                      int has_alpha,
641
                                      int loss_mask)
642
{
643
    int dist, i, loss, min_dist;
644
    enum PixelFormat dst_pix_fmt;
645

    
646
    /* find exact color match with smallest size */
647
    dst_pix_fmt = PIX_FMT_NONE;
648
    min_dist = 0x7fffffff;
649
    for(i = 0;i < PIX_FMT_NB; i++) {
650
        if (pix_fmt_mask & (1ULL << i)) {
651
            loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
652
            if (loss == 0) {
653
                dist = avg_bits_per_pixel(i);
654
                if (dist < min_dist) {
655
                    min_dist = dist;
656
                    dst_pix_fmt = i;
657
                }
658
            }
659
        }
660
    }
661
    return dst_pix_fmt;
662
}
663

    
664
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
665
                              int has_alpha, int *loss_ptr)
666
{
667
    enum PixelFormat dst_pix_fmt;
668
    int loss_mask, i;
669
    static const int loss_mask_order[] = {
670
        ~0, /* no loss first */
671
        ~FF_LOSS_ALPHA,
672
        ~FF_LOSS_RESOLUTION,
673
        ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
674
        ~FF_LOSS_COLORQUANT,
675
        ~FF_LOSS_DEPTH,
676
        0,
677
    };
678

    
679
    /* try with successive loss */
680
    i = 0;
681
    for(;;) {
682
        loss_mask = loss_mask_order[i++];
683
        dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
684
                                                 has_alpha, loss_mask);
685
        if (dst_pix_fmt >= 0)
686
            goto found;
687
        if (loss_mask == 0)
688
            break;
689
    }
690
    return PIX_FMT_NONE;
691
 found:
692
    if (loss_ptr)
693
        *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
694
    return dst_pix_fmt;
695
}
696

    
697
#if LIBAVCODEC_VERSION_MAJOR < 53
698
void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
699
                           const uint8_t *src, int src_wrap,
700
                           int width, int height)
701
{
702
    av_image_copy_plane(dst, dst_wrap, src, src_wrap, width, height);
703
}
704

    
705
int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
706
{
707
    return av_image_get_linesize(pix_fmt, width, plane);
708
}
709

    
710
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
711
                          uint8_t *src_data[4], int src_linesize[4],
712
                          enum PixelFormat pix_fmt, int width, int height)
713
{
714
    av_image_copy(dst_data, dst_linesize, src_data, src_linesize,
715
                  pix_fmt, width, height);
716
}
717
#endif
718

    
719
void av_picture_copy(AVPicture *dst, const AVPicture *src,
720
                     enum PixelFormat pix_fmt, int width, int height)
721
{
722
    av_image_copy(dst->data, dst->linesize, src->data,
723
                  src->linesize, pix_fmt, width, height);
724
}
725

    
726
/* 2x2 -> 1x1 */
727
void ff_shrink22(uint8_t *dst, int dst_wrap,
728
                     const uint8_t *src, int src_wrap,
729
                     int width, int height)
730
{
731
    int w;
732
    const uint8_t *s1, *s2;
733
    uint8_t *d;
734

    
735
    for(;height > 0; height--) {
736
        s1 = src;
737
        s2 = s1 + src_wrap;
738
        d = dst;
739
        for(w = width;w >= 4; w-=4) {
740
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
741
            d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
742
            d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
743
            d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
744
            s1 += 8;
745
            s2 += 8;
746
            d += 4;
747
        }
748
        for(;w > 0; w--) {
749
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
750
            s1 += 2;
751
            s2 += 2;
752
            d++;
753
        }
754
        src += 2 * src_wrap;
755
        dst += dst_wrap;
756
    }
757
}
758

    
759
/* 4x4 -> 1x1 */
760
void ff_shrink44(uint8_t *dst, int dst_wrap,
761
                     const uint8_t *src, int src_wrap,
762
                     int width, int height)
763
{
764
    int w;
765
    const uint8_t *s1, *s2, *s3, *s4;
766
    uint8_t *d;
767

    
768
    for(;height > 0; height--) {
769
        s1 = src;
770
        s2 = s1 + src_wrap;
771
        s3 = s2 + src_wrap;
772
        s4 = s3 + src_wrap;
773
        d = dst;
774
        for(w = width;w > 0; w--) {
775
            d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
776
                    s2[0] + s2[1] + s2[2] + s2[3] +
777
                    s3[0] + s3[1] + s3[2] + s3[3] +
778
                    s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
779
            s1 += 4;
780
            s2 += 4;
781
            s3 += 4;
782
            s4 += 4;
783
            d++;
784
        }
785
        src += 4 * src_wrap;
786
        dst += dst_wrap;
787
    }
788
}
789

    
790
/* 8x8 -> 1x1 */
791
void ff_shrink88(uint8_t *dst, int dst_wrap,
792
                     const uint8_t *src, int src_wrap,
793
                     int width, int height)
794
{
795
    int w, i;
796

    
797
    for(;height > 0; height--) {
798
        for(w = width;w > 0; w--) {
799
            int tmp=0;
800
            for(i=0; i<8; i++){
801
                tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
802
                src += src_wrap;
803
            }
804
            *(dst++) = (tmp + 32)>>6;
805
            src += 8 - 8*src_wrap;
806
        }
807
        src += 8*src_wrap - 8*width;
808
        dst += dst_wrap - width;
809
    }
810
}
811

    
812

    
813
int avpicture_alloc(AVPicture *picture,
814
                    enum PixelFormat pix_fmt, int width, int height)
815
{
816
    int ret;
817

    
818
    if ((ret = av_image_alloc(picture->data, picture->linesize, width, height, pix_fmt, 0)) < 0) {
819
        memset(picture, 0, sizeof(AVPicture));
820
        return ret;
821
    }
822

    
823
    return 0;
824
}
825

    
826
void avpicture_free(AVPicture *picture)
827
{
828
    av_free(picture->data[0]);
829
}
830

    
831
/* return true if yuv planar */
832
static inline int is_yuv_planar(const PixFmtInfo *ps)
833
{
834
    return (ps->color_type == FF_COLOR_YUV ||
835
            ps->color_type == FF_COLOR_YUV_JPEG) &&
836
        ps->pixel_type == FF_PIXEL_PLANAR;
837
}
838

    
839
int av_picture_crop(AVPicture *dst, const AVPicture *src,
840
                    enum PixelFormat pix_fmt, int top_band, int left_band)
841
{
842
    int y_shift;
843
    int x_shift;
844

    
845
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
846
        return -1;
847

    
848
    y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
849
    x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
850

    
851
    dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
852
    dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
853
    dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
854

    
855
    dst->linesize[0] = src->linesize[0];
856
    dst->linesize[1] = src->linesize[1];
857
    dst->linesize[2] = src->linesize[2];
858
    return 0;
859
}
860

    
861
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
862
                   enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
863
            int *color)
864
{
865
    uint8_t *optr;
866
    int y_shift;
867
    int x_shift;
868
    int yheight;
869
    int i, y;
870

    
871
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
872
        !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
873

    
874
    for (i = 0; i < 3; i++) {
875
        x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
876
        y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
877

    
878
        if (padtop || padleft) {
879
            memset(dst->data[i], color[i],
880
                dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
881
        }
882

    
883
        if (padleft || padright) {
884
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
885
                (dst->linesize[i] - (padright >> x_shift));
886
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
887
            for (y = 0; y < yheight; y++) {
888
                memset(optr, color[i], (padleft + padright) >> x_shift);
889
                optr += dst->linesize[i];
890
            }
891
        }
892

    
893
        if (src) { /* first line */
894
            uint8_t *iptr = src->data[i];
895
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
896
                    (padleft >> x_shift);
897
            memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
898
            iptr += src->linesize[i];
899
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
900
                (dst->linesize[i] - (padright >> x_shift));
901
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
902
            for (y = 0; y < yheight; y++) {
903
                memset(optr, color[i], (padleft + padright) >> x_shift);
904
                memcpy(optr + ((padleft + padright) >> x_shift), iptr,
905
                       (width - padleft - padright) >> x_shift);
906
                iptr += src->linesize[i];
907
                optr += dst->linesize[i];
908
            }
909
        }
910

    
911
        if (padbottom || padright) {
912
            optr = dst->data[i] + dst->linesize[i] *
913
                ((height - padbottom) >> y_shift) - (padright >> x_shift);
914
            memset(optr, color[i],dst->linesize[i] *
915
                (padbottom >> y_shift) + (padright >> x_shift));
916
        }
917
    }
918
    return 0;
919
}
920

    
921
/* NOTE: we scan all the pixels to have an exact information */
922
static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
923
{
924
    const unsigned char *p;
925
    int src_wrap, ret, x, y;
926
    unsigned int a;
927
    uint32_t *palette = (uint32_t *)src->data[1];
928

    
929
    p = src->data[0];
930
    src_wrap = src->linesize[0] - width;
931
    ret = 0;
932
    for(y=0;y<height;y++) {
933
        for(x=0;x<width;x++) {
934
            a = palette[p[0]] >> 24;
935
            if (a == 0x00) {
936
                ret |= FF_ALPHA_TRANSP;
937
            } else if (a != 0xff) {
938
                ret |= FF_ALPHA_SEMI_TRANSP;
939
            }
940
            p++;
941
        }
942
        p += src_wrap;
943
    }
944
    return ret;
945
}
946

    
947
int img_get_alpha_info(const AVPicture *src,
948
                       enum PixelFormat pix_fmt, int width, int height)
949
{
950
    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
951
    int ret;
952

    
953
    /* no alpha can be represented in format */
954
    if (!pf->is_alpha)
955
        return 0;
956
    switch(pix_fmt) {
957
    case PIX_FMT_PAL8:
958
        ret = get_alpha_info_pal8(src, width, height);
959
        break;
960
    default:
961
        /* we do not know, so everything is indicated */
962
        ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
963
        break;
964
    }
965
    return ret;
966
}
967

    
968
#if !(HAVE_MMX && HAVE_YASM)
969
/* filter parameters: [-1 4 2 4 -1] // 8 */
970
static void deinterlace_line_c(uint8_t *dst,
971
                             const uint8_t *lum_m4, const uint8_t *lum_m3,
972
                             const uint8_t *lum_m2, const uint8_t *lum_m1,
973
                             const uint8_t *lum,
974
                             int size)
975
{
976
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
977
    int sum;
978

    
979
    for(;size > 0;size--) {
980
        sum = -lum_m4[0];
981
        sum += lum_m3[0] << 2;
982
        sum += lum_m2[0] << 1;
983
        sum += lum_m1[0] << 2;
984
        sum += -lum[0];
985
        dst[0] = cm[(sum + 4) >> 3];
986
        lum_m4++;
987
        lum_m3++;
988
        lum_m2++;
989
        lum_m1++;
990
        lum++;
991
        dst++;
992
    }
993
}
994

    
995
static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
996
                                       uint8_t *lum_m2, uint8_t *lum_m1,
997
                                       uint8_t *lum, int size)
998
{
999
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1000
    int sum;
1001

    
1002
    for(;size > 0;size--) {
1003
        sum = -lum_m4[0];
1004
        sum += lum_m3[0] << 2;
1005
        sum += lum_m2[0] << 1;
1006
        lum_m4[0]=lum_m2[0];
1007
        sum += lum_m1[0] << 2;
1008
        sum += -lum[0];
1009
        lum_m2[0] = cm[(sum + 4) >> 3];
1010
        lum_m4++;
1011
        lum_m3++;
1012
        lum_m2++;
1013
        lum_m1++;
1014
        lum++;
1015
    }
1016
}
1017
#endif
1018

    
1019
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1020
   top field is copied as is, but the bottom field is deinterlaced
1021
   against the top field. */
1022
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1023
                                    const uint8_t *src1, int src_wrap,
1024
                                    int width, int height)
1025
{
1026
    const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1027
    int y;
1028

    
1029
    src_m2 = src1;
1030
    src_m1 = src1;
1031
    src_0=&src_m1[src_wrap];
1032
    src_p1=&src_0[src_wrap];
1033
    src_p2=&src_p1[src_wrap];
1034
    for(y=0;y<(height-2);y+=2) {
1035
        memcpy(dst,src_m1,width);
1036
        dst += dst_wrap;
1037
        deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1038
        src_m2 = src_0;
1039
        src_m1 = src_p1;
1040
        src_0 = src_p2;
1041
        src_p1 += 2*src_wrap;
1042
        src_p2 += 2*src_wrap;
1043
        dst += dst_wrap;
1044
    }
1045
    memcpy(dst,src_m1,width);
1046
    dst += dst_wrap;
1047
    /* do last line */
1048
    deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1049
}
1050

    
1051
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1052
                                             int width, int height)
1053
{
1054
    uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1055
    int y;
1056
    uint8_t *buf;
1057
    buf = (uint8_t*)av_malloc(width);
1058

    
1059
    src_m1 = src1;
1060
    memcpy(buf,src_m1,width);
1061
    src_0=&src_m1[src_wrap];
1062
    src_p1=&src_0[src_wrap];
1063
    src_p2=&src_p1[src_wrap];
1064
    for(y=0;y<(height-2);y+=2) {
1065
        deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1066
        src_m1 = src_p1;
1067
        src_0 = src_p2;
1068
        src_p1 += 2*src_wrap;
1069
        src_p2 += 2*src_wrap;
1070
    }
1071
    /* do last line */
1072
    deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1073
    av_free(buf);
1074
}
1075

    
1076
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1077
                          enum PixelFormat pix_fmt, int width, int height)
1078
{
1079
    int i;
1080

    
1081
    if (pix_fmt != PIX_FMT_YUV420P &&
1082
        pix_fmt != PIX_FMT_YUVJ420P &&
1083
        pix_fmt != PIX_FMT_YUV422P &&
1084
        pix_fmt != PIX_FMT_YUVJ422P &&
1085
        pix_fmt != PIX_FMT_YUV444P &&
1086
        pix_fmt != PIX_FMT_YUV411P &&
1087
        pix_fmt != PIX_FMT_GRAY8)
1088
        return -1;
1089
    if ((width & 3) != 0 || (height & 3) != 0)
1090
        return -1;
1091

    
1092
    for(i=0;i<3;i++) {
1093
        if (i == 1) {
1094
            switch(pix_fmt) {
1095
            case PIX_FMT_YUVJ420P:
1096
            case PIX_FMT_YUV420P:
1097
                width >>= 1;
1098
                height >>= 1;
1099
                break;
1100
            case PIX_FMT_YUV422P:
1101
            case PIX_FMT_YUVJ422P:
1102
                width >>= 1;
1103
                break;
1104
            case PIX_FMT_YUV411P:
1105
                width >>= 2;
1106
                break;
1107
            default:
1108
                break;
1109
            }
1110
            if (pix_fmt == PIX_FMT_GRAY8) {
1111
                break;
1112
            }
1113
        }
1114
        if (src == dst) {
1115
            deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1116
                                 width, height);
1117
        } else {
1118
            deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1119
                                        src->data[i], src->linesize[i],
1120
                                        width, height);
1121
        }
1122
    }
1123
    emms_c();
1124
    return 0;
1125
}
1126