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ffmpeg / libavcodec / imgconvert.c @ 09ab8859

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1
/*
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 * Misc image conversion routines
3
 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
4
 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
21

    
22
/**
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 * @file libavcodec/imgconvert.c
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 * misc image conversion routines
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 */
26

    
27
/* TODO:
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 * - write 'ffimg' program to test all the image related stuff
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 * - move all api to slice based system
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 * - integrate deinterlacing, postprocessing and scaling in the conversion process
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 */
32

    
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#include "avcodec.h"
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#include "dsputil.h"
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#include "colorspace.h"
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#include "internal.h"
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#include "imgconvert.h"
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#include "libavutil/pixdesc.h"
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40
#if HAVE_MMX
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#include "x86/mmx.h"
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#include "x86/dsputil_mmx.h"
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#endif
44

    
45
#define xglue(x, y) x ## y
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#define glue(x, y) xglue(x, y)
47

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

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

    
57
typedef struct PixFmtInfo {
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    uint8_t nb_channels;     /**< number of channels (including alpha) */
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    uint8_t color_type;      /**< color type (see FF_COLOR_xxx constants) */
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    uint8_t pixel_type;      /**< pixel storage type (see FF_PIXEL_xxx constants) */
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    uint8_t is_alpha : 1;    /**< true if alpha can be specified */
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    uint8_t depth;           /**< bit depth of the color components */
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} PixFmtInfo;
64

    
65
/* this table gives more information about formats */
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static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
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    /* YUV formats */
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    [PIX_FMT_YUV420P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
73
    },
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    [PIX_FMT_YUV422P] = {
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        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 8,
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    },
80
    [PIX_FMT_YUV444P] = {
81
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
84
        .depth = 8,
85
    },
86
    [PIX_FMT_YUYV422] = {
87
        .nb_channels = 1,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PACKED,
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        .depth = 8,
91
    },
92
    [PIX_FMT_UYVY422] = {
93
        .nb_channels = 1,
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        .color_type = FF_COLOR_YUV,
95
        .pixel_type = FF_PIXEL_PACKED,
96
        .depth = 8,
97
    },
98
    [PIX_FMT_YUV410P] = {
99
        .nb_channels = 3,
100
        .color_type = FF_COLOR_YUV,
101
        .pixel_type = FF_PIXEL_PLANAR,
102
        .depth = 8,
103
    },
104
    [PIX_FMT_YUV411P] = {
105
        .nb_channels = 3,
106
        .color_type = FF_COLOR_YUV,
107
        .pixel_type = FF_PIXEL_PLANAR,
108
        .depth = 8,
109
    },
110
    [PIX_FMT_YUV440P] = {
111
        .nb_channels = 3,
112
        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
114
        .depth = 8,
115
    },
116
    [PIX_FMT_YUV420P16LE] = {
117
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
119
        .pixel_type = FF_PIXEL_PLANAR,
120
        .depth = 16,
121
    },
122
    [PIX_FMT_YUV422P16LE] = {
123
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
127
    },
128
    [PIX_FMT_YUV444P16LE] = {
129
        .nb_channels = 3,
130
        .color_type = FF_COLOR_YUV,
131
        .pixel_type = FF_PIXEL_PLANAR,
132
        .depth = 16,
133
    },
134
    [PIX_FMT_YUV420P16BE] = {
135
        .nb_channels = 3,
136
        .color_type = FF_COLOR_YUV,
137
        .pixel_type = FF_PIXEL_PLANAR,
138
        .depth = 16,
139
    },
140
    [PIX_FMT_YUV422P16BE] = {
141
        .nb_channels = 3,
142
        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
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        .depth = 16,
145
    },
146
    [PIX_FMT_YUV444P16BE] = {
147
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
149
        .pixel_type = FF_PIXEL_PLANAR,
150
        .depth = 16,
151
    },
152

    
153

    
154
    /* YUV formats with alpha plane */
155
    [PIX_FMT_YUVA420P] = {
156
        .nb_channels = 4,
157
        .color_type = FF_COLOR_YUV,
158
        .pixel_type = FF_PIXEL_PLANAR,
159
        .depth = 8,
160
    },
161

    
162
    /* JPEG YUV */
163
    [PIX_FMT_YUVJ420P] = {
164
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
166
        .pixel_type = FF_PIXEL_PLANAR,
167
        .depth = 8,
168
    },
169
    [PIX_FMT_YUVJ422P] = {
170
        .nb_channels = 3,
171
        .color_type = FF_COLOR_YUV_JPEG,
172
        .pixel_type = FF_PIXEL_PLANAR,
173
        .depth = 8,
174
    },
175
    [PIX_FMT_YUVJ444P] = {
176
        .nb_channels = 3,
177
        .color_type = FF_COLOR_YUV_JPEG,
178
        .pixel_type = FF_PIXEL_PLANAR,
179
        .depth = 8,
180
    },
181
    [PIX_FMT_YUVJ440P] = {
182
        .nb_channels = 3,
183
        .color_type = FF_COLOR_YUV_JPEG,
184
        .pixel_type = FF_PIXEL_PLANAR,
185
        .depth = 8,
186
    },
187

    
188
    /* RGB formats */
189
    [PIX_FMT_RGB24] = {
190
        .nb_channels = 3,
191
        .color_type = FF_COLOR_RGB,
192
        .pixel_type = FF_PIXEL_PACKED,
193
        .depth = 8,
194
    },
195
    [PIX_FMT_BGR24] = {
196
        .nb_channels = 3,
197
        .color_type = FF_COLOR_RGB,
198
        .pixel_type = FF_PIXEL_PACKED,
199
        .depth = 8,
200
    },
201
    [PIX_FMT_ARGB] = {
202
        .nb_channels = 4, .is_alpha = 1,
203
        .color_type = FF_COLOR_RGB,
204
        .pixel_type = FF_PIXEL_PACKED,
205
        .depth = 8,
206
    },
207
    [PIX_FMT_RGB48BE] = {
208
        .nb_channels = 3,
209
        .color_type = FF_COLOR_RGB,
210
        .pixel_type = FF_PIXEL_PACKED,
211
        .depth = 16,
212
    },
213
    [PIX_FMT_RGB48LE] = {
214
        .nb_channels = 3,
215
        .color_type = FF_COLOR_RGB,
216
        .pixel_type = FF_PIXEL_PACKED,
217
        .depth = 16,
218
    },
219
    [PIX_FMT_RGB565BE] = {
220
        .nb_channels = 3,
221
        .color_type = FF_COLOR_RGB,
222
        .pixel_type = FF_PIXEL_PACKED,
223
        .depth = 5,
224
    },
225
    [PIX_FMT_RGB565LE] = {
226
        .nb_channels = 3,
227
        .color_type = FF_COLOR_RGB,
228
        .pixel_type = FF_PIXEL_PACKED,
229
        .depth = 5,
230
    },
231
    [PIX_FMT_RGB555BE] = {
232
        .nb_channels = 3,
233
        .color_type = FF_COLOR_RGB,
234
        .pixel_type = FF_PIXEL_PACKED,
235
        .depth = 5,
236
    },
237
    [PIX_FMT_RGB555LE] = {
238
        .nb_channels = 3,
239
        .color_type = FF_COLOR_RGB,
240
        .pixel_type = FF_PIXEL_PACKED,
241
        .depth = 5,
242
    },
243
    [PIX_FMT_RGB444BE] = {
244
        .nb_channels = 3,
245
        .color_type = FF_COLOR_RGB,
246
        .pixel_type = FF_PIXEL_PACKED,
247
        .depth = 4,
248
    },
249
    [PIX_FMT_RGB444LE] = {
250
        .nb_channels = 3,
251
        .color_type = FF_COLOR_RGB,
252
        .pixel_type = FF_PIXEL_PACKED,
253
        .depth = 4,
254
    },
255

    
256
    /* gray / mono formats */
257
    [PIX_FMT_GRAY16BE] = {
258
        .nb_channels = 1,
259
        .color_type = FF_COLOR_GRAY,
260
        .pixel_type = FF_PIXEL_PLANAR,
261
        .depth = 16,
262
    },
263
    [PIX_FMT_GRAY16LE] = {
264
        .nb_channels = 1,
265
        .color_type = FF_COLOR_GRAY,
266
        .pixel_type = FF_PIXEL_PLANAR,
267
        .depth = 16,
268
    },
269
    [PIX_FMT_GRAY8] = {
270
        .nb_channels = 1,
271
        .color_type = FF_COLOR_GRAY,
272
        .pixel_type = FF_PIXEL_PLANAR,
273
        .depth = 8,
274
    },
275
    [PIX_FMT_MONOWHITE] = {
276
        .nb_channels = 1,
277
        .color_type = FF_COLOR_GRAY,
278
        .pixel_type = FF_PIXEL_PLANAR,
279
        .depth = 1,
280
    },
281
    [PIX_FMT_MONOBLACK] = {
282
        .nb_channels = 1,
283
        .color_type = FF_COLOR_GRAY,
284
        .pixel_type = FF_PIXEL_PLANAR,
285
        .depth = 1,
286
    },
287

    
288
    /* paletted formats */
289
    [PIX_FMT_PAL8] = {
290
        .nb_channels = 4, .is_alpha = 1,
291
        .color_type = FF_COLOR_RGB,
292
        .pixel_type = FF_PIXEL_PALETTE,
293
        .depth = 8,
294
    },
295
    [PIX_FMT_UYYVYY411] = {
296
        .nb_channels = 1,
297
        .color_type = FF_COLOR_YUV,
298
        .pixel_type = FF_PIXEL_PACKED,
299
        .depth = 8,
300
    },
301
    [PIX_FMT_ABGR] = {
302
        .nb_channels = 4, .is_alpha = 1,
303
        .color_type = FF_COLOR_RGB,
304
        .pixel_type = FF_PIXEL_PACKED,
305
        .depth = 8,
306
    },
307
    [PIX_FMT_BGR565BE] = {
308
        .nb_channels = 3,
309
        .color_type = FF_COLOR_RGB,
310
        .pixel_type = FF_PIXEL_PACKED,
311
        .depth = 5,
312
    },
313
    [PIX_FMT_BGR565LE] = {
314
        .nb_channels = 3,
315
        .color_type = FF_COLOR_RGB,
316
        .pixel_type = FF_PIXEL_PACKED,
317
        .depth = 5,
318
    },
319
    [PIX_FMT_BGR555BE] = {
320
        .nb_channels = 3,
321
        .color_type = FF_COLOR_RGB,
322
        .pixel_type = FF_PIXEL_PACKED,
323
        .depth = 5,
324
    },
325
    [PIX_FMT_BGR555LE] = {
326
        .nb_channels = 3,
327
        .color_type = FF_COLOR_RGB,
328
        .pixel_type = FF_PIXEL_PACKED,
329
        .depth = 5,
330
    },
331
    [PIX_FMT_BGR444BE] = {
332
        .nb_channels = 3,
333
        .color_type = FF_COLOR_RGB,
334
        .pixel_type = FF_PIXEL_PACKED,
335
        .depth = 4,
336
    },
337
    [PIX_FMT_BGR444LE] = {
338
        .nb_channels = 3,
339
        .color_type = FF_COLOR_RGB,
340
        .pixel_type = FF_PIXEL_PACKED,
341
        .depth = 4,
342
    },
343
    [PIX_FMT_RGB8] = {
344
        .nb_channels = 1,
345
        .color_type = FF_COLOR_RGB,
346
        .pixel_type = FF_PIXEL_PACKED,
347
        .depth = 8,
348
    },
349
    [PIX_FMT_RGB4] = {
350
        .nb_channels = 1,
351
        .color_type = FF_COLOR_RGB,
352
        .pixel_type = FF_PIXEL_PACKED,
353
        .depth = 4,
354
    },
355
    [PIX_FMT_RGB4_BYTE] = {
356
        .nb_channels = 1,
357
        .color_type = FF_COLOR_RGB,
358
        .pixel_type = FF_PIXEL_PACKED,
359
        .depth = 8,
360
    },
361
    [PIX_FMT_BGR8] = {
362
        .nb_channels = 1,
363
        .color_type = FF_COLOR_RGB,
364
        .pixel_type = FF_PIXEL_PACKED,
365
        .depth = 8,
366
    },
367
    [PIX_FMT_BGR4] = {
368
        .nb_channels = 1,
369
        .color_type = FF_COLOR_RGB,
370
        .pixel_type = FF_PIXEL_PACKED,
371
        .depth = 4,
372
    },
373
    [PIX_FMT_BGR4_BYTE] = {
374
        .nb_channels = 1,
375
        .color_type = FF_COLOR_RGB,
376
        .pixel_type = FF_PIXEL_PACKED,
377
        .depth = 8,
378
    },
379
    [PIX_FMT_NV12] = {
380
        .nb_channels = 2,
381
        .color_type = FF_COLOR_YUV,
382
        .pixel_type = FF_PIXEL_PLANAR,
383
        .depth = 8,
384
    },
385
    [PIX_FMT_NV21] = {
386
        .nb_channels = 2,
387
        .color_type = FF_COLOR_YUV,
388
        .pixel_type = FF_PIXEL_PLANAR,
389
        .depth = 8,
390
    },
391

    
392
    [PIX_FMT_BGRA] = {
393
        .nb_channels = 4, .is_alpha = 1,
394
        .color_type = FF_COLOR_RGB,
395
        .pixel_type = FF_PIXEL_PACKED,
396
        .depth = 8,
397
    },
398
    [PIX_FMT_RGBA] = {
399
        .nb_channels = 4, .is_alpha = 1,
400
        .color_type = FF_COLOR_RGB,
401
        .pixel_type = FF_PIXEL_PACKED,
402
        .depth = 8,
403
    },
404
};
405

    
406
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift)
407
{
408
    *h_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
409
    *v_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
410
}
411

    
412
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
413
{
414
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
415
        return NULL;
416
    else
417
        return av_pix_fmt_descriptors[pix_fmt].name;
418
}
419

    
420
#if LIBAVCODEC_VERSION_MAJOR < 53
421
enum PixelFormat avcodec_get_pix_fmt(const char *name)
422
{
423
    return av_get_pix_fmt(name);
424
}
425
#endif
426

    
427
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
428
{
429
    /* print header */
430
    if (pix_fmt < 0)
431
        snprintf (buf, buf_size,
432
                  "name      " " nb_channels" " depth" " is_alpha"
433
            );
434
    else{
435
        PixFmtInfo info= pix_fmt_info[pix_fmt];
436

    
437
        char is_alpha_char= info.is_alpha ? 'y' : 'n';
438

    
439
        snprintf (buf, buf_size,
440
                  "%-11s %5d %9d %6c",
441
                  av_pix_fmt_descriptors[pix_fmt].name,
442
                  info.nb_channels,
443
                  info.depth,
444
                  is_alpha_char
445
            );
446
    }
447
}
448

    
449
int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
450
{
451
    return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
452
}
453

    
454
int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
455
    int i;
456

    
457
    for(i=0; i<256; i++){
458
        int r,g,b;
459

    
460
        switch(pix_fmt) {
461
        case PIX_FMT_RGB8:
462
            r= (i>>5    )*36;
463
            g= ((i>>2)&7)*36;
464
            b= (i&3     )*85;
465
            break;
466
        case PIX_FMT_BGR8:
467
            b= (i>>6    )*85;
468
            g= ((i>>3)&7)*36;
469
            r= (i&7     )*36;
470
            break;
471
        case PIX_FMT_RGB4_BYTE:
472
            r= (i>>3    )*255;
473
            g= ((i>>1)&3)*85;
474
            b= (i&1     )*255;
475
            break;
476
        case PIX_FMT_BGR4_BYTE:
477
            b= (i>>3    )*255;
478
            g= ((i>>1)&3)*85;
479
            r= (i&1     )*255;
480
            break;
481
        case PIX_FMT_GRAY8:
482
            r=b=g= i;
483
            break;
484
        default:
485
            return -1;
486
        }
487
        pal[i] =  b + (g<<8) + (r<<16);
488
    }
489

    
490
    return 0;
491
}
492

    
493
int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
494
{
495
    int w2;
496
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
497

    
498
    memset(picture->linesize, 0, sizeof(picture->linesize));
499

    
500
    switch(pix_fmt) {
501
    case PIX_FMT_YUV420P:
502
    case PIX_FMT_YUV422P:
503
    case PIX_FMT_YUV444P:
504
    case PIX_FMT_YUV410P:
505
    case PIX_FMT_YUV411P:
506
    case PIX_FMT_YUV440P:
507
    case PIX_FMT_YUVJ420P:
508
    case PIX_FMT_YUVJ422P:
509
    case PIX_FMT_YUVJ444P:
510
    case PIX_FMT_YUVJ440P:
511
        w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
512
        picture->linesize[0] = width;
513
        picture->linesize[1] = w2;
514
        picture->linesize[2] = w2;
515
        break;
516
    case PIX_FMT_YUV420P16LE:
517
    case PIX_FMT_YUV422P16LE:
518
    case PIX_FMT_YUV444P16LE:
519
    case PIX_FMT_YUV420P16BE:
520
    case PIX_FMT_YUV422P16BE:
521
    case PIX_FMT_YUV444P16BE:
522
        w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
523
        picture->linesize[0] = 2*width;
524
        picture->linesize[1] = 2*w2;
525
        picture->linesize[2] = 2*w2;
526
        break;
527
    case PIX_FMT_YUVA420P:
528
        w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
529
        picture->linesize[0] = width;
530
        picture->linesize[1] = w2;
531
        picture->linesize[2] = w2;
532
        picture->linesize[3] = width;
533
        break;
534
    case PIX_FMT_NV12:
535
    case PIX_FMT_NV21:
536
        w2 = (width + (1 << desc->log2_chroma_w) - 1) >> desc->log2_chroma_w;
537
        picture->linesize[0] = width;
538
        picture->linesize[1] = 2 * w2;
539
        break;
540
    case PIX_FMT_RGB24:
541
    case PIX_FMT_BGR24:
542
        picture->linesize[0] = width * 3;
543
        break;
544
    case PIX_FMT_ARGB:
545
    case PIX_FMT_ABGR:
546
    case PIX_FMT_RGBA:
547
    case PIX_FMT_BGRA:
548
        picture->linesize[0] = width * 4;
549
        break;
550
    case PIX_FMT_RGB48BE:
551
    case PIX_FMT_RGB48LE:
552
        picture->linesize[0] = width * 6;
553
        break;
554
    case PIX_FMT_GRAY16BE:
555
    case PIX_FMT_GRAY16LE:
556
    case PIX_FMT_BGR444BE:
557
    case PIX_FMT_BGR444LE:
558
    case PIX_FMT_BGR555BE:
559
    case PIX_FMT_BGR555LE:
560
    case PIX_FMT_BGR565BE:
561
    case PIX_FMT_BGR565LE:
562
    case PIX_FMT_RGB444BE:
563
    case PIX_FMT_RGB444LE:
564
    case PIX_FMT_RGB555BE:
565
    case PIX_FMT_RGB555LE:
566
    case PIX_FMT_RGB565BE:
567
    case PIX_FMT_RGB565LE:
568
    case PIX_FMT_YUYV422:
569
        picture->linesize[0] = width * 2;
570
        break;
571
    case PIX_FMT_UYVY422:
572
        picture->linesize[0] = width * 2;
573
        break;
574
    case PIX_FMT_UYYVYY411:
575
        picture->linesize[0] = width + width/2;
576
        break;
577
    case PIX_FMT_RGB4:
578
    case PIX_FMT_BGR4:
579
        picture->linesize[0] = width / 2;
580
        break;
581
    case PIX_FMT_MONOWHITE:
582
    case PIX_FMT_MONOBLACK:
583
        picture->linesize[0] = (width + 7) >> 3;
584
        break;
585
    case PIX_FMT_PAL8:
586
    case PIX_FMT_RGB8:
587
    case PIX_FMT_BGR8:
588
    case PIX_FMT_RGB4_BYTE:
589
    case PIX_FMT_BGR4_BYTE:
590
    case PIX_FMT_GRAY8:
591
        picture->linesize[0] = width;
592
        break;
593
    default:
594
        return -1;
595
    }
596
    return 0;
597
}
598

    
599
int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
600
                    int height)
601
{
602
    int size, h2, size2;
603
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
604

    
605
    size = picture->linesize[0] * height;
606
    switch(pix_fmt) {
607
    case PIX_FMT_YUV420P:
608
    case PIX_FMT_YUV422P:
609
    case PIX_FMT_YUV444P:
610
    case PIX_FMT_YUV410P:
611
    case PIX_FMT_YUV411P:
612
    case PIX_FMT_YUV440P:
613
    case PIX_FMT_YUVJ420P:
614
    case PIX_FMT_YUVJ422P:
615
    case PIX_FMT_YUVJ444P:
616
    case PIX_FMT_YUVJ440P:
617
    case PIX_FMT_YUV420P16LE:
618
    case PIX_FMT_YUV422P16LE:
619
    case PIX_FMT_YUV444P16LE:
620
    case PIX_FMT_YUV420P16BE:
621
    case PIX_FMT_YUV422P16BE:
622
    case PIX_FMT_YUV444P16BE:
623
        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
624
        size2 = picture->linesize[1] * h2;
625
        picture->data[0] = ptr;
626
        picture->data[1] = picture->data[0] + size;
627
        picture->data[2] = picture->data[1] + size2;
628
        picture->data[3] = NULL;
629
        return size + 2 * size2;
630
    case PIX_FMT_YUVA420P:
631
        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
632
        size2 = picture->linesize[1] * h2;
633
        picture->data[0] = ptr;
634
        picture->data[1] = picture->data[0] + size;
635
        picture->data[2] = picture->data[1] + size2;
636
        picture->data[3] = picture->data[1] + size2 + size2;
637
        return 2 * size + 2 * size2;
638
    case PIX_FMT_NV12:
639
    case PIX_FMT_NV21:
640
        h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h;
641
        size2 = picture->linesize[1] * h2;
642
        picture->data[0] = ptr;
643
        picture->data[1] = picture->data[0] + size;
644
        picture->data[2] = NULL;
645
        picture->data[3] = NULL;
646
        return size + size2;
647
    case PIX_FMT_RGB24:
648
    case PIX_FMT_BGR24:
649
    case PIX_FMT_ARGB:
650
    case PIX_FMT_ABGR:
651
    case PIX_FMT_RGBA:
652
    case PIX_FMT_BGRA:
653
    case PIX_FMT_RGB48BE:
654
    case PIX_FMT_RGB48LE:
655
    case PIX_FMT_GRAY16BE:
656
    case PIX_FMT_GRAY16LE:
657
    case PIX_FMT_BGR444BE:
658
    case PIX_FMT_BGR444LE:
659
    case PIX_FMT_BGR555BE:
660
    case PIX_FMT_BGR555LE:
661
    case PIX_FMT_BGR565BE:
662
    case PIX_FMT_BGR565LE:
663
    case PIX_FMT_RGB444BE:
664
    case PIX_FMT_RGB444LE:
665
    case PIX_FMT_RGB555BE:
666
    case PIX_FMT_RGB555LE:
667
    case PIX_FMT_RGB565BE:
668
    case PIX_FMT_RGB565LE:
669
    case PIX_FMT_YUYV422:
670
    case PIX_FMT_UYVY422:
671
    case PIX_FMT_UYYVYY411:
672
    case PIX_FMT_RGB4:
673
    case PIX_FMT_BGR4:
674
    case PIX_FMT_MONOWHITE:
675
    case PIX_FMT_MONOBLACK:
676
        picture->data[0] = ptr;
677
        picture->data[1] = NULL;
678
        picture->data[2] = NULL;
679
        picture->data[3] = NULL;
680
        return size;
681
    case PIX_FMT_PAL8:
682
    case PIX_FMT_RGB8:
683
    case PIX_FMT_BGR8:
684
    case PIX_FMT_RGB4_BYTE:
685
    case PIX_FMT_BGR4_BYTE:
686
    case PIX_FMT_GRAY8:
687
        size2 = (size + 3) & ~3;
688
        picture->data[0] = ptr;
689
        picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */
690
        picture->data[2] = NULL;
691
        picture->data[3] = NULL;
692
        return size2 + 256 * 4;
693
    default:
694
        picture->data[0] = NULL;
695
        picture->data[1] = NULL;
696
        picture->data[2] = NULL;
697
        picture->data[3] = NULL;
698
        return -1;
699
    }
700
}
701

    
702
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
703
                   enum PixelFormat pix_fmt, int width, int height)
704
{
705

    
706
    if(avcodec_check_dimensions(NULL, width, height))
707
        return -1;
708

    
709
    if (ff_fill_linesize(picture, pix_fmt, width))
710
        return -1;
711

    
712
    return ff_fill_pointer(picture, ptr, pix_fmt, height);
713
}
714

    
715
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
716
                     unsigned char *dest, int dest_size)
717
{
718
    const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
719
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
720
    int i, j, w, ow, h, oh, data_planes;
721
    const unsigned char* s;
722
    int size = avpicture_get_size(pix_fmt, width, height);
723

    
724
    if (size > dest_size || size < 0)
725
        return -1;
726

    
727
    if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
728
        if (pix_fmt == PIX_FMT_YUYV422 ||
729
            pix_fmt == PIX_FMT_UYVY422 ||
730
            pix_fmt == PIX_FMT_BGR565BE ||
731
            pix_fmt == PIX_FMT_BGR565LE ||
732
            pix_fmt == PIX_FMT_BGR555BE ||
733
            pix_fmt == PIX_FMT_BGR555LE ||
734
            pix_fmt == PIX_FMT_BGR444BE ||
735
            pix_fmt == PIX_FMT_BGR444LE ||
736
            pix_fmt == PIX_FMT_RGB565BE ||
737
            pix_fmt == PIX_FMT_RGB565LE ||
738
            pix_fmt == PIX_FMT_RGB555BE ||
739
            pix_fmt == PIX_FMT_RGB555LE ||
740
            pix_fmt == PIX_FMT_RGB444BE ||
741
            pix_fmt == PIX_FMT_RGB444LE)
742
            w = width * 2;
743
        else if (pix_fmt == PIX_FMT_UYYVYY411)
744
            w = width + width/2;
745
        else if (pix_fmt == PIX_FMT_PAL8)
746
            w = width;
747
        else
748
            w = width * (pf->depth * pf->nb_channels / 8);
749

    
750
        data_planes = 1;
751
        h = height;
752
    } else {
753
        data_planes = pf->nb_channels;
754
        w = (width*pf->depth + 7)/8;
755
        h = height;
756
    }
757

    
758
    ow = w;
759
    oh = h;
760

    
761
    for (i=0; i<data_planes; i++) {
762
        if (i == 1) {
763
            w = (- ((-width) >> desc->log2_chroma_w) * pf->depth + 7) / 8;
764
            h = -((-height) >> desc->log2_chroma_h);
765
            if (pix_fmt == PIX_FMT_NV12 || pix_fmt == PIX_FMT_NV21)
766
                w <<= 1;
767
        } else if (i == 3) {
768
            w = ow;
769
            h = oh;
770
        }
771
        s = src->data[i];
772
        for(j=0; j<h; j++) {
773
            memcpy(dest, s, w);
774
            dest += w;
775
            s += src->linesize[i];
776
        }
777
    }
778

    
779
    if (pf->pixel_type == FF_PIXEL_PALETTE)
780
        memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
781

    
782
    return size;
783
}
784

    
785
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
786
{
787
    AVPicture dummy_pict;
788
    if(avcodec_check_dimensions(NULL, width, height))
789
        return -1;
790
    switch (pix_fmt) {
791
    case PIX_FMT_RGB8:
792
    case PIX_FMT_BGR8:
793
    case PIX_FMT_RGB4_BYTE:
794
    case PIX_FMT_BGR4_BYTE:
795
    case PIX_FMT_GRAY8:
796
        // do not include palette for these pseudo-paletted formats
797
        return width * height;
798
    }
799
    return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
800
}
801

    
802
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
803
                             int has_alpha)
804
{
805
    const PixFmtInfo *pf, *ps;
806
    const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
807
    const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
808
    int loss;
809

    
810
    ps = &pix_fmt_info[src_pix_fmt];
811

    
812
    /* compute loss */
813
    loss = 0;
814
    pf = &pix_fmt_info[dst_pix_fmt];
815
    if (pf->depth < ps->depth ||
816
        ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE ||
817
          dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) &&
818
         (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE ||
819
          src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE)))
820
        loss |= FF_LOSS_DEPTH;
821
    if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
822
        dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
823
        loss |= FF_LOSS_RESOLUTION;
824
    switch(pf->color_type) {
825
    case FF_COLOR_RGB:
826
        if (ps->color_type != FF_COLOR_RGB &&
827
            ps->color_type != FF_COLOR_GRAY)
828
            loss |= FF_LOSS_COLORSPACE;
829
        break;
830
    case FF_COLOR_GRAY:
831
        if (ps->color_type != FF_COLOR_GRAY)
832
            loss |= FF_LOSS_COLORSPACE;
833
        break;
834
    case FF_COLOR_YUV:
835
        if (ps->color_type != FF_COLOR_YUV)
836
            loss |= FF_LOSS_COLORSPACE;
837
        break;
838
    case FF_COLOR_YUV_JPEG:
839
        if (ps->color_type != FF_COLOR_YUV_JPEG &&
840
            ps->color_type != FF_COLOR_YUV &&
841
            ps->color_type != FF_COLOR_GRAY)
842
            loss |= FF_LOSS_COLORSPACE;
843
        break;
844
    default:
845
        /* fail safe test */
846
        if (ps->color_type != pf->color_type)
847
            loss |= FF_LOSS_COLORSPACE;
848
        break;
849
    }
850
    if (pf->color_type == FF_COLOR_GRAY &&
851
        ps->color_type != FF_COLOR_GRAY)
852
        loss |= FF_LOSS_CHROMA;
853
    if (!pf->is_alpha && (ps->is_alpha && has_alpha))
854
        loss |= FF_LOSS_ALPHA;
855
    if (pf->pixel_type == FF_PIXEL_PALETTE &&
856
        (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
857
        loss |= FF_LOSS_COLORQUANT;
858
    return loss;
859
}
860

    
861
static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
862
{
863
    int bits;
864
    const PixFmtInfo *pf;
865
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
866

    
867
    pf = &pix_fmt_info[pix_fmt];
868
    switch(pf->pixel_type) {
869
    case FF_PIXEL_PACKED:
870
        switch(pix_fmt) {
871
        case PIX_FMT_YUYV422:
872
        case PIX_FMT_UYVY422:
873
        case PIX_FMT_RGB565BE:
874
        case PIX_FMT_RGB565LE:
875
        case PIX_FMT_RGB555BE:
876
        case PIX_FMT_RGB555LE:
877
        case PIX_FMT_RGB444BE:
878
        case PIX_FMT_RGB444LE:
879
        case PIX_FMT_BGR565BE:
880
        case PIX_FMT_BGR565LE:
881
        case PIX_FMT_BGR555BE:
882
        case PIX_FMT_BGR555LE:
883
        case PIX_FMT_BGR444BE:
884
        case PIX_FMT_BGR444LE:
885
            bits = 16;
886
            break;
887
        case PIX_FMT_UYYVYY411:
888
            bits = 12;
889
            break;
890
        default:
891
            bits = pf->depth * pf->nb_channels;
892
            break;
893
        }
894
        break;
895
    case FF_PIXEL_PLANAR:
896
        if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
897
            bits = pf->depth * pf->nb_channels;
898
        } else {
899
            bits = pf->depth + ((2 * pf->depth) >>
900
                                (desc->log2_chroma_w + desc->log2_chroma_h));
901
        }
902
        break;
903
    case FF_PIXEL_PALETTE:
904
        bits = 8;
905
        break;
906
    default:
907
        bits = -1;
908
        break;
909
    }
910
    return bits;
911
}
912

    
913
static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
914
                                      enum PixelFormat src_pix_fmt,
915
                                      int has_alpha,
916
                                      int loss_mask)
917
{
918
    int dist, i, loss, min_dist;
919
    enum PixelFormat dst_pix_fmt;
920

    
921
    /* find exact color match with smallest size */
922
    dst_pix_fmt = PIX_FMT_NONE;
923
    min_dist = 0x7fffffff;
924
    for(i = 0;i < PIX_FMT_NB; i++) {
925
        if (pix_fmt_mask & (1ULL << i)) {
926
            loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
927
            if (loss == 0) {
928
                dist = avg_bits_per_pixel(i);
929
                if (dist < min_dist) {
930
                    min_dist = dist;
931
                    dst_pix_fmt = i;
932
                }
933
            }
934
        }
935
    }
936
    return dst_pix_fmt;
937
}
938

    
939
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
940
                              int has_alpha, int *loss_ptr)
941
{
942
    enum PixelFormat dst_pix_fmt;
943
    int loss_mask, i;
944
    static const int loss_mask_order[] = {
945
        ~0, /* no loss first */
946
        ~FF_LOSS_ALPHA,
947
        ~FF_LOSS_RESOLUTION,
948
        ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
949
        ~FF_LOSS_COLORQUANT,
950
        ~FF_LOSS_DEPTH,
951
        0,
952
    };
953

    
954
    /* try with successive loss */
955
    i = 0;
956
    for(;;) {
957
        loss_mask = loss_mask_order[i++];
958
        dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
959
                                                 has_alpha, loss_mask);
960
        if (dst_pix_fmt >= 0)
961
            goto found;
962
        if (loss_mask == 0)
963
            break;
964
    }
965
    return PIX_FMT_NONE;
966
 found:
967
    if (loss_ptr)
968
        *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
969
    return dst_pix_fmt;
970
}
971

    
972
void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
973
                           const uint8_t *src, int src_wrap,
974
                           int width, int height)
975
{
976
    if((!dst) || (!src))
977
        return;
978
    for(;height > 0; height--) {
979
        memcpy(dst, src, width);
980
        dst += dst_wrap;
981
        src += src_wrap;
982
    }
983
}
984

    
985
int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
986
{
987
    int bits;
988
    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
989
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
990

    
991
    pf = &pix_fmt_info[pix_fmt];
992
    switch(pf->pixel_type) {
993
    case FF_PIXEL_PACKED:
994
        switch(pix_fmt) {
995
        case PIX_FMT_YUYV422:
996
        case PIX_FMT_UYVY422:
997
        case PIX_FMT_RGB565BE:
998
        case PIX_FMT_RGB565LE:
999
        case PIX_FMT_RGB555BE:
1000
        case PIX_FMT_RGB555LE:
1001
        case PIX_FMT_RGB444BE:
1002
        case PIX_FMT_RGB444LE:
1003
        case PIX_FMT_BGR565BE:
1004
        case PIX_FMT_BGR565LE:
1005
        case PIX_FMT_BGR555BE:
1006
        case PIX_FMT_BGR555LE:
1007
        case PIX_FMT_BGR444BE:
1008
        case PIX_FMT_BGR444LE:
1009
            bits = 16;
1010
            break;
1011
        case PIX_FMT_UYYVYY411:
1012
            bits = 12;
1013
            break;
1014
        default:
1015
            bits = pf->depth * pf->nb_channels;
1016
            break;
1017
        }
1018
        return (width * bits + 7) >> 3;
1019
        break;
1020
    case FF_PIXEL_PLANAR:
1021
            if (plane == 1 || plane == 2)
1022
                width= -((-width)>>desc->log2_chroma_w);
1023

    
1024
            return (width * pf->depth + 7) >> 3;
1025
        break;
1026
    case FF_PIXEL_PALETTE:
1027
        if (plane == 0)
1028
            return width;
1029
        break;
1030
    }
1031

    
1032
    return -1;
1033
}
1034

    
1035
void av_picture_copy(AVPicture *dst, const AVPicture *src,
1036
                     enum PixelFormat pix_fmt, int width, int height)
1037
{
1038
    int i;
1039
    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1040
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
1041

    
1042
    switch(pf->pixel_type) {
1043
    case FF_PIXEL_PACKED:
1044
    case FF_PIXEL_PLANAR:
1045
        for(i = 0; i < pf->nb_channels; i++) {
1046
            int h;
1047
            int bwidth = ff_get_plane_bytewidth(pix_fmt, width, i);
1048
            h = height;
1049
            if (i == 1 || i == 2) {
1050
                h= -((-height)>>desc->log2_chroma_h);
1051
            }
1052
            ff_img_copy_plane(dst->data[i], dst->linesize[i],
1053
                           src->data[i], src->linesize[i],
1054
                           bwidth, h);
1055
        }
1056
        break;
1057
    case FF_PIXEL_PALETTE:
1058
        ff_img_copy_plane(dst->data[0], dst->linesize[0],
1059
                       src->data[0], src->linesize[0],
1060
                       width, height);
1061
        /* copy the palette */
1062
        memcpy(dst->data[1], src->data[1], 4*256);
1063
        break;
1064
    }
1065
}
1066

    
1067
/* 2x2 -> 1x1 */
1068
void ff_shrink22(uint8_t *dst, int dst_wrap,
1069
                     const uint8_t *src, int src_wrap,
1070
                     int width, int height)
1071
{
1072
    int w;
1073
    const uint8_t *s1, *s2;
1074
    uint8_t *d;
1075

    
1076
    for(;height > 0; height--) {
1077
        s1 = src;
1078
        s2 = s1 + src_wrap;
1079
        d = dst;
1080
        for(w = width;w >= 4; w-=4) {
1081
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1082
            d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
1083
            d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
1084
            d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
1085
            s1 += 8;
1086
            s2 += 8;
1087
            d += 4;
1088
        }
1089
        for(;w > 0; w--) {
1090
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
1091
            s1 += 2;
1092
            s2 += 2;
1093
            d++;
1094
        }
1095
        src += 2 * src_wrap;
1096
        dst += dst_wrap;
1097
    }
1098
}
1099

    
1100
/* 4x4 -> 1x1 */
1101
void ff_shrink44(uint8_t *dst, int dst_wrap,
1102
                     const uint8_t *src, int src_wrap,
1103
                     int width, int height)
1104
{
1105
    int w;
1106
    const uint8_t *s1, *s2, *s3, *s4;
1107
    uint8_t *d;
1108

    
1109
    for(;height > 0; height--) {
1110
        s1 = src;
1111
        s2 = s1 + src_wrap;
1112
        s3 = s2 + src_wrap;
1113
        s4 = s3 + src_wrap;
1114
        d = dst;
1115
        for(w = width;w > 0; w--) {
1116
            d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
1117
                    s2[0] + s2[1] + s2[2] + s2[3] +
1118
                    s3[0] + s3[1] + s3[2] + s3[3] +
1119
                    s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
1120
            s1 += 4;
1121
            s2 += 4;
1122
            s3 += 4;
1123
            s4 += 4;
1124
            d++;
1125
        }
1126
        src += 4 * src_wrap;
1127
        dst += dst_wrap;
1128
    }
1129
}
1130

    
1131
/* 8x8 -> 1x1 */
1132
void ff_shrink88(uint8_t *dst, int dst_wrap,
1133
                     const uint8_t *src, int src_wrap,
1134
                     int width, int height)
1135
{
1136
    int w, i;
1137

    
1138
    for(;height > 0; height--) {
1139
        for(w = width;w > 0; w--) {
1140
            int tmp=0;
1141
            for(i=0; i<8; i++){
1142
                tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
1143
                src += src_wrap;
1144
            }
1145
            *(dst++) = (tmp + 32)>>6;
1146
            src += 8 - 8*src_wrap;
1147
        }
1148
        src += 8*src_wrap - 8*width;
1149
        dst += dst_wrap - width;
1150
    }
1151
}
1152

    
1153

    
1154
int avpicture_alloc(AVPicture *picture,
1155
                    enum PixelFormat pix_fmt, int width, int height)
1156
{
1157
    int size;
1158
    void *ptr;
1159

    
1160
    size = avpicture_fill(picture, NULL, pix_fmt, width, height);
1161
    if(size<0)
1162
        goto fail;
1163
    ptr = av_malloc(size);
1164
    if (!ptr)
1165
        goto fail;
1166
    avpicture_fill(picture, ptr, pix_fmt, width, height);
1167
    if(picture->data[1] && !picture->data[2])
1168
        ff_set_systematic_pal((uint32_t*)picture->data[1], pix_fmt);
1169

    
1170
    return 0;
1171
 fail:
1172
    memset(picture, 0, sizeof(AVPicture));
1173
    return -1;
1174
}
1175

    
1176
void avpicture_free(AVPicture *picture)
1177
{
1178
    av_free(picture->data[0]);
1179
}
1180

    
1181
/* return true if yuv planar */
1182
static inline int is_yuv_planar(const PixFmtInfo *ps)
1183
{
1184
    return (ps->color_type == FF_COLOR_YUV ||
1185
            ps->color_type == FF_COLOR_YUV_JPEG) &&
1186
        ps->pixel_type == FF_PIXEL_PLANAR;
1187
}
1188

    
1189
int av_picture_crop(AVPicture *dst, const AVPicture *src,
1190
                    enum PixelFormat pix_fmt, int top_band, int left_band)
1191
{
1192
    int y_shift;
1193
    int x_shift;
1194

    
1195
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
1196
        return -1;
1197

    
1198
    y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
1199
    x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
1200

    
1201
    dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
1202
    dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
1203
    dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
1204

    
1205
    dst->linesize[0] = src->linesize[0];
1206
    dst->linesize[1] = src->linesize[1];
1207
    dst->linesize[2] = src->linesize[2];
1208
    return 0;
1209
}
1210

    
1211
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
1212
                   enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
1213
            int *color)
1214
{
1215
    uint8_t *optr;
1216
    int y_shift;
1217
    int x_shift;
1218
    int yheight;
1219
    int i, y;
1220

    
1221
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
1222
        !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
1223

    
1224
    for (i = 0; i < 3; i++) {
1225
        x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
1226
        y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
1227

    
1228
        if (padtop || padleft) {
1229
            memset(dst->data[i], color[i],
1230
                dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
1231
        }
1232

    
1233
        if (padleft || padright) {
1234
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1235
                (dst->linesize[i] - (padright >> x_shift));
1236
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1237
            for (y = 0; y < yheight; y++) {
1238
                memset(optr, color[i], (padleft + padright) >> x_shift);
1239
                optr += dst->linesize[i];
1240
            }
1241
        }
1242

    
1243
        if (src) { /* first line */
1244
            uint8_t *iptr = src->data[i];
1245
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1246
                    (padleft >> x_shift);
1247
            memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
1248
            iptr += src->linesize[i];
1249
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
1250
                (dst->linesize[i] - (padright >> x_shift));
1251
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
1252
            for (y = 0; y < yheight; y++) {
1253
                memset(optr, color[i], (padleft + padright) >> x_shift);
1254
                memcpy(optr + ((padleft + padright) >> x_shift), iptr,
1255
                       (width - padleft - padright) >> x_shift);
1256
                iptr += src->linesize[i];
1257
                optr += dst->linesize[i];
1258
            }
1259
        }
1260

    
1261
        if (padbottom || padright) {
1262
            optr = dst->data[i] + dst->linesize[i] *
1263
                ((height - padbottom) >> y_shift) - (padright >> x_shift);
1264
            memset(optr, color[i],dst->linesize[i] *
1265
                (padbottom >> y_shift) + (padright >> x_shift));
1266
        }
1267
    }
1268
    return 0;
1269
}
1270

    
1271
/* NOTE: we scan all the pixels to have an exact information */
1272
static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
1273
{
1274
    const unsigned char *p;
1275
    int src_wrap, ret, x, y;
1276
    unsigned int a;
1277
    uint32_t *palette = (uint32_t *)src->data[1];
1278

    
1279
    p = src->data[0];
1280
    src_wrap = src->linesize[0] - width;
1281
    ret = 0;
1282
    for(y=0;y<height;y++) {
1283
        for(x=0;x<width;x++) {
1284
            a = palette[p[0]] >> 24;
1285
            if (a == 0x00) {
1286
                ret |= FF_ALPHA_TRANSP;
1287
            } else if (a != 0xff) {
1288
                ret |= FF_ALPHA_SEMI_TRANSP;
1289
            }
1290
            p++;
1291
        }
1292
        p += src_wrap;
1293
    }
1294
    return ret;
1295
}
1296

    
1297
int img_get_alpha_info(const AVPicture *src,
1298
                       enum PixelFormat pix_fmt, int width, int height)
1299
{
1300
    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1301
    int ret;
1302

    
1303
    /* no alpha can be represented in format */
1304
    if (!pf->is_alpha)
1305
        return 0;
1306
    switch(pix_fmt) {
1307
    case PIX_FMT_PAL8:
1308
        ret = get_alpha_info_pal8(src, width, height);
1309
        break;
1310
    default:
1311
        /* we do not know, so everything is indicated */
1312
        ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1313
        break;
1314
    }
1315
    return ret;
1316
}
1317

    
1318
#if HAVE_MMX
1319
#define DEINT_INPLACE_LINE_LUM \
1320
                    movd_m2r(lum_m4[0],mm0);\
1321
                    movd_m2r(lum_m3[0],mm1);\
1322
                    movd_m2r(lum_m2[0],mm2);\
1323
                    movd_m2r(lum_m1[0],mm3);\
1324
                    movd_m2r(lum[0],mm4);\
1325
                    punpcklbw_r2r(mm7,mm0);\
1326
                    movd_r2m(mm2,lum_m4[0]);\
1327
                    punpcklbw_r2r(mm7,mm1);\
1328
                    punpcklbw_r2r(mm7,mm2);\
1329
                    punpcklbw_r2r(mm7,mm3);\
1330
                    punpcklbw_r2r(mm7,mm4);\
1331
                    paddw_r2r(mm3,mm1);\
1332
                    psllw_i2r(1,mm2);\
1333
                    paddw_r2r(mm4,mm0);\
1334
                    psllw_i2r(2,mm1);\
1335
                    paddw_r2r(mm6,mm2);\
1336
                    paddw_r2r(mm2,mm1);\
1337
                    psubusw_r2r(mm0,mm1);\
1338
                    psrlw_i2r(3,mm1);\
1339
                    packuswb_r2r(mm7,mm1);\
1340
                    movd_r2m(mm1,lum_m2[0]);
1341

    
1342
#define DEINT_LINE_LUM \
1343
                    movd_m2r(lum_m4[0],mm0);\
1344
                    movd_m2r(lum_m3[0],mm1);\
1345
                    movd_m2r(lum_m2[0],mm2);\
1346
                    movd_m2r(lum_m1[0],mm3);\
1347
                    movd_m2r(lum[0],mm4);\
1348
                    punpcklbw_r2r(mm7,mm0);\
1349
                    punpcklbw_r2r(mm7,mm1);\
1350
                    punpcklbw_r2r(mm7,mm2);\
1351
                    punpcklbw_r2r(mm7,mm3);\
1352
                    punpcklbw_r2r(mm7,mm4);\
1353
                    paddw_r2r(mm3,mm1);\
1354
                    psllw_i2r(1,mm2);\
1355
                    paddw_r2r(mm4,mm0);\
1356
                    psllw_i2r(2,mm1);\
1357
                    paddw_r2r(mm6,mm2);\
1358
                    paddw_r2r(mm2,mm1);\
1359
                    psubusw_r2r(mm0,mm1);\
1360
                    psrlw_i2r(3,mm1);\
1361
                    packuswb_r2r(mm7,mm1);\
1362
                    movd_r2m(mm1,dst[0]);
1363
#endif
1364

    
1365
/* filter parameters: [-1 4 2 4 -1] // 8 */
1366
static void deinterlace_line(uint8_t *dst,
1367
                             const uint8_t *lum_m4, const uint8_t *lum_m3,
1368
                             const uint8_t *lum_m2, const uint8_t *lum_m1,
1369
                             const uint8_t *lum,
1370
                             int size)
1371
{
1372
#if !HAVE_MMX
1373
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1374
    int sum;
1375

    
1376
    for(;size > 0;size--) {
1377
        sum = -lum_m4[0];
1378
        sum += lum_m3[0] << 2;
1379
        sum += lum_m2[0] << 1;
1380
        sum += lum_m1[0] << 2;
1381
        sum += -lum[0];
1382
        dst[0] = cm[(sum + 4) >> 3];
1383
        lum_m4++;
1384
        lum_m3++;
1385
        lum_m2++;
1386
        lum_m1++;
1387
        lum++;
1388
        dst++;
1389
    }
1390
#else
1391

    
1392
    {
1393
        pxor_r2r(mm7,mm7);
1394
        movq_m2r(ff_pw_4,mm6);
1395
    }
1396
    for (;size > 3; size-=4) {
1397
        DEINT_LINE_LUM
1398
        lum_m4+=4;
1399
        lum_m3+=4;
1400
        lum_m2+=4;
1401
        lum_m1+=4;
1402
        lum+=4;
1403
        dst+=4;
1404
    }
1405
#endif
1406
}
1407
static void deinterlace_line_inplace(uint8_t *lum_m4, uint8_t *lum_m3, uint8_t *lum_m2, uint8_t *lum_m1, uint8_t *lum,
1408
                             int size)
1409
{
1410
#if !HAVE_MMX
1411
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1412
    int sum;
1413

    
1414
    for(;size > 0;size--) {
1415
        sum = -lum_m4[0];
1416
        sum += lum_m3[0] << 2;
1417
        sum += lum_m2[0] << 1;
1418
        lum_m4[0]=lum_m2[0];
1419
        sum += lum_m1[0] << 2;
1420
        sum += -lum[0];
1421
        lum_m2[0] = cm[(sum + 4) >> 3];
1422
        lum_m4++;
1423
        lum_m3++;
1424
        lum_m2++;
1425
        lum_m1++;
1426
        lum++;
1427
    }
1428
#else
1429

    
1430
    {
1431
        pxor_r2r(mm7,mm7);
1432
        movq_m2r(ff_pw_4,mm6);
1433
    }
1434
    for (;size > 3; size-=4) {
1435
        DEINT_INPLACE_LINE_LUM
1436
        lum_m4+=4;
1437
        lum_m3+=4;
1438
        lum_m2+=4;
1439
        lum_m1+=4;
1440
        lum+=4;
1441
    }
1442
#endif
1443
}
1444

    
1445
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1446
   top field is copied as is, but the bottom field is deinterlaced
1447
   against the top field. */
1448
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1449
                                    const uint8_t *src1, int src_wrap,
1450
                                    int width, int height)
1451
{
1452
    const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1453
    int y;
1454

    
1455
    src_m2 = src1;
1456
    src_m1 = src1;
1457
    src_0=&src_m1[src_wrap];
1458
    src_p1=&src_0[src_wrap];
1459
    src_p2=&src_p1[src_wrap];
1460
    for(y=0;y<(height-2);y+=2) {
1461
        memcpy(dst,src_m1,width);
1462
        dst += dst_wrap;
1463
        deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1464
        src_m2 = src_0;
1465
        src_m1 = src_p1;
1466
        src_0 = src_p2;
1467
        src_p1 += 2*src_wrap;
1468
        src_p2 += 2*src_wrap;
1469
        dst += dst_wrap;
1470
    }
1471
    memcpy(dst,src_m1,width);
1472
    dst += dst_wrap;
1473
    /* do last line */
1474
    deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1475
}
1476

    
1477
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1478
                                             int width, int height)
1479
{
1480
    uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1481
    int y;
1482
    uint8_t *buf;
1483
    buf = (uint8_t*)av_malloc(width);
1484

    
1485
    src_m1 = src1;
1486
    memcpy(buf,src_m1,width);
1487
    src_0=&src_m1[src_wrap];
1488
    src_p1=&src_0[src_wrap];
1489
    src_p2=&src_p1[src_wrap];
1490
    for(y=0;y<(height-2);y+=2) {
1491
        deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1492
        src_m1 = src_p1;
1493
        src_0 = src_p2;
1494
        src_p1 += 2*src_wrap;
1495
        src_p2 += 2*src_wrap;
1496
    }
1497
    /* do last line */
1498
    deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1499
    av_free(buf);
1500
}
1501

    
1502
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1503
                          enum PixelFormat pix_fmt, int width, int height)
1504
{
1505
    int i;
1506

    
1507
    if (pix_fmt != PIX_FMT_YUV420P &&
1508
        pix_fmt != PIX_FMT_YUV422P &&
1509
        pix_fmt != PIX_FMT_YUV444P &&
1510
        pix_fmt != PIX_FMT_YUV411P &&
1511
        pix_fmt != PIX_FMT_GRAY8)
1512
        return -1;
1513
    if ((width & 3) != 0 || (height & 3) != 0)
1514
        return -1;
1515

    
1516
    for(i=0;i<3;i++) {
1517
        if (i == 1) {
1518
            switch(pix_fmt) {
1519
            case PIX_FMT_YUV420P:
1520
                width >>= 1;
1521
                height >>= 1;
1522
                break;
1523
            case PIX_FMT_YUV422P:
1524
                width >>= 1;
1525
                break;
1526
            case PIX_FMT_YUV411P:
1527
                width >>= 2;
1528
                break;
1529
            default:
1530
                break;
1531
            }
1532
            if (pix_fmt == PIX_FMT_GRAY8) {
1533
                break;
1534
            }
1535
        }
1536
        if (src == dst) {
1537
            deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1538
                                 width, height);
1539
        } else {
1540
            deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1541
                                        src->data[i], src->linesize[i],
1542
                                        width, height);
1543
        }
1544
    }
1545
    emms_c();
1546
    return 0;
1547
}
1548