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ffmpeg / libavcodec / imgconvert.c @ 6a269f35

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1
/*
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 * Misc image conversion routines
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 * Copyright (c) 2001, 2002, 2003 Fabrice Bellard
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 *
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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
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 * 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

    
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/**
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 * @file
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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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 */
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#include "avcodec.h"
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#include "dsputil.h"
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#include "internal.h"
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#include "imgconvert.h"
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#include "libavutil/colorspace.h"
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#include "libavutil/pixdesc.h"
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#include "libavcore/imgutils.h"
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#include "libavcore/internal.h"
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42
#if HAVE_MMX && HAVE_YASM
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#include "x86/dsputil_mmx.h"
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#endif
45

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

    
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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 */
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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 */
57

    
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#if HAVE_MMX && HAVE_YASM
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#define deinterlace_line_inplace ff_deinterlace_line_inplace_mmx
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#define deinterlace_line         ff_deinterlace_line_mmx
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#else
62
#define deinterlace_line_inplace deinterlace_line_inplace_c
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#define deinterlace_line         deinterlace_line_c
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#endif
65

    
66
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;
73

    
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/* this table gives more information about formats */
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static const PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
76
    /* 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,
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    },
83
    [PIX_FMT_YUV422P] = {
84
        .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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    },
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    [PIX_FMT_YUV444P] = {
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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,
94
    },
95
    [PIX_FMT_YUYV422] = {
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        .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,
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    },
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    [PIX_FMT_UYVY422] = {
102
        .nb_channels = 1,
103
        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PACKED,
105
        .depth = 8,
106
    },
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    [PIX_FMT_YUV410P] = {
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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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    },
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    [PIX_FMT_YUV411P] = {
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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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    },
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    [PIX_FMT_YUV440P] = {
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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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    },
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    [PIX_FMT_YUV420P16LE] = {
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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 = 16,
130
    },
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    [PIX_FMT_YUV422P16LE] = {
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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 = 16,
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    },
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    [PIX_FMT_YUV444P16LE] = {
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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 = 16,
142
    },
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    [PIX_FMT_YUV420P16BE] = {
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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 = 16,
148
    },
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    [PIX_FMT_YUV422P16BE] = {
150
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
153
        .depth = 16,
154
    },
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    [PIX_FMT_YUV444P16BE] = {
156
        .nb_channels = 3,
157
        .color_type = FF_COLOR_YUV,
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        .pixel_type = FF_PIXEL_PLANAR,
159
        .depth = 16,
160
    },
161

    
162

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

    
171
    /* JPEG YUV */
172
    [PIX_FMT_YUVJ420P] = {
173
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
175
        .pixel_type = FF_PIXEL_PLANAR,
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        .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,
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        .pixel_type = FF_PIXEL_PLANAR,
188
        .depth = 8,
189
    },
190
    [PIX_FMT_YUVJ440P] = {
191
        .nb_channels = 3,
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        .color_type = FF_COLOR_YUV_JPEG,
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        .pixel_type = FF_PIXEL_PLANAR,
194
        .depth = 8,
195
    },
196

    
197
    /* RGB formats */
198
    [PIX_FMT_RGB24] = {
199
        .nb_channels = 3,
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        .color_type = FF_COLOR_RGB,
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        .pixel_type = FF_PIXEL_PACKED,
202
        .depth = 8,
203
    },
204
    [PIX_FMT_BGR24] = {
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        .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,
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        .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
#endif
435

    
436
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
437
{
438
    /* print header */
439
    if (pix_fmt < 0)
440
        snprintf (buf, buf_size,
441
                  "name      " " nb_components" " nb_bits"
442
            );
443
    else{
444
        const AVPixFmtDescriptor *pixdesc = &av_pix_fmt_descriptors[pix_fmt];
445
        snprintf (buf, buf_size,
446
                  "%-11s %7d %10d",
447
                  pixdesc->name,
448
                  pixdesc->nb_components,
449
                  av_get_bits_per_pixel(pixdesc)
450
            );
451
    }
452
}
453

    
454
int ff_is_hwaccel_pix_fmt(enum PixelFormat pix_fmt)
455
{
456
    return av_pix_fmt_descriptors[pix_fmt].flags & PIX_FMT_HWACCEL;
457
}
458

    
459
#if LIBAVCODEC_VERSION_MAJOR < 53
460
int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){
461
    return ff_set_systematic_pal2(pal, pix_fmt);
462
}
463

    
464
int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width)
465
{
466
    return av_image_fill_linesizes(picture->linesize, pix_fmt, width);
467
}
468

    
469
int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt,
470
                    int height)
471
{
472
    return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
473
}
474
#endif
475

    
476
int avpicture_fill(AVPicture *picture, uint8_t *ptr,
477
                   enum PixelFormat pix_fmt, int width, int height)
478
{
479
    int ret;
480

    
481
    if ((ret = av_image_check_size(width, height, 0, NULL)) < 0)
482
        return ret;
483

    
484
    if ((ret = av_image_fill_linesizes(picture->linesize, pix_fmt, width)) < 0)
485
        return ret;
486

    
487
    return av_image_fill_pointers(picture->data, pix_fmt, height, ptr, picture->linesize);
488
}
489

    
490
int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width, int height,
491
                     unsigned char *dest, int dest_size)
492
{
493
    const PixFmtInfo* pf = &pix_fmt_info[pix_fmt];
494
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
495
    int i, j, w, ow, h, oh, data_planes;
496
    const unsigned char* s;
497
    int size = avpicture_get_size(pix_fmt, width, height);
498

    
499
    if (size > dest_size || size < 0)
500
        return -1;
501

    
502
    if (pf->pixel_type == FF_PIXEL_PACKED || pf->pixel_type == FF_PIXEL_PALETTE) {
503
        if (pix_fmt == PIX_FMT_YUYV422 ||
504
            pix_fmt == PIX_FMT_UYVY422 ||
505
            pix_fmt == PIX_FMT_BGR565BE ||
506
            pix_fmt == PIX_FMT_BGR565LE ||
507
            pix_fmt == PIX_FMT_BGR555BE ||
508
            pix_fmt == PIX_FMT_BGR555LE ||
509
            pix_fmt == PIX_FMT_BGR444BE ||
510
            pix_fmt == PIX_FMT_BGR444LE ||
511
            pix_fmt == PIX_FMT_RGB565BE ||
512
            pix_fmt == PIX_FMT_RGB565LE ||
513
            pix_fmt == PIX_FMT_RGB555BE ||
514
            pix_fmt == PIX_FMT_RGB555LE ||
515
            pix_fmt == PIX_FMT_RGB444BE ||
516
            pix_fmt == PIX_FMT_RGB444LE)
517
            w = width * 2;
518
        else if (pix_fmt == PIX_FMT_UYYVYY411)
519
            w = width + width/2;
520
        else if (pix_fmt == PIX_FMT_PAL8)
521
            w = width;
522
        else
523
            w = width * (pf->depth * pf->nb_channels / 8);
524

    
525
        data_planes = 1;
526
        h = height;
527
    } else {
528
        data_planes = pf->nb_channels;
529
        w = (width*pf->depth + 7)/8;
530
        h = height;
531
    }
532

    
533
    ow = w;
534
    oh = h;
535

    
536
    for (i=0; i<data_planes; i++) {
537
        if (i == 1) {
538
            w = (- ((-width) >> desc->log2_chroma_w) * pf->depth + 7) / 8;
539
            h = -((-height) >> desc->log2_chroma_h);
540
            if (pix_fmt == PIX_FMT_NV12 || pix_fmt == PIX_FMT_NV21)
541
                w <<= 1;
542
        } else if (i == 3) {
543
            w = ow;
544
            h = oh;
545
        }
546
        s = src->data[i];
547
        for(j=0; j<h; j++) {
548
            memcpy(dest, s, w);
549
            dest += w;
550
            s += src->linesize[i];
551
        }
552
    }
553

    
554
    if (pf->pixel_type == FF_PIXEL_PALETTE)
555
        memcpy((unsigned char *)(((size_t)dest + 3) & ~3), src->data[1], 256 * 4);
556

    
557
    return size;
558
}
559

    
560
int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height)
561
{
562
    AVPicture dummy_pict;
563
    if(av_image_check_size(width, height, 0, NULL))
564
        return -1;
565
    switch (pix_fmt) {
566
    case PIX_FMT_RGB8:
567
    case PIX_FMT_BGR8:
568
    case PIX_FMT_RGB4_BYTE:
569
    case PIX_FMT_BGR4_BYTE:
570
    case PIX_FMT_GRAY8:
571
        // do not include palette for these pseudo-paletted formats
572
        return width * height;
573
    }
574
    return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
575
}
576

    
577
int avcodec_get_pix_fmt_loss(enum PixelFormat dst_pix_fmt, enum PixelFormat src_pix_fmt,
578
                             int has_alpha)
579
{
580
    const PixFmtInfo *pf, *ps;
581
    const AVPixFmtDescriptor *src_desc = &av_pix_fmt_descriptors[src_pix_fmt];
582
    const AVPixFmtDescriptor *dst_desc = &av_pix_fmt_descriptors[dst_pix_fmt];
583
    int loss;
584

    
585
    ps = &pix_fmt_info[src_pix_fmt];
586

    
587
    /* compute loss */
588
    loss = 0;
589
    pf = &pix_fmt_info[dst_pix_fmt];
590
    if (pf->depth < ps->depth ||
591
        ((dst_pix_fmt == PIX_FMT_RGB555BE || dst_pix_fmt == PIX_FMT_RGB555LE ||
592
          dst_pix_fmt == PIX_FMT_BGR555BE || dst_pix_fmt == PIX_FMT_BGR555LE) &&
593
         (src_pix_fmt == PIX_FMT_RGB565BE || src_pix_fmt == PIX_FMT_RGB565LE ||
594
          src_pix_fmt == PIX_FMT_BGR565BE || src_pix_fmt == PIX_FMT_BGR565LE)))
595
        loss |= FF_LOSS_DEPTH;
596
    if (dst_desc->log2_chroma_w > src_desc->log2_chroma_w ||
597
        dst_desc->log2_chroma_h > src_desc->log2_chroma_h)
598
        loss |= FF_LOSS_RESOLUTION;
599
    switch(pf->color_type) {
600
    case FF_COLOR_RGB:
601
        if (ps->color_type != FF_COLOR_RGB &&
602
            ps->color_type != FF_COLOR_GRAY)
603
            loss |= FF_LOSS_COLORSPACE;
604
        break;
605
    case FF_COLOR_GRAY:
606
        if (ps->color_type != FF_COLOR_GRAY)
607
            loss |= FF_LOSS_COLORSPACE;
608
        break;
609
    case FF_COLOR_YUV:
610
        if (ps->color_type != FF_COLOR_YUV)
611
            loss |= FF_LOSS_COLORSPACE;
612
        break;
613
    case FF_COLOR_YUV_JPEG:
614
        if (ps->color_type != FF_COLOR_YUV_JPEG &&
615
            ps->color_type != FF_COLOR_YUV &&
616
            ps->color_type != FF_COLOR_GRAY)
617
            loss |= FF_LOSS_COLORSPACE;
618
        break;
619
    default:
620
        /* fail safe test */
621
        if (ps->color_type != pf->color_type)
622
            loss |= FF_LOSS_COLORSPACE;
623
        break;
624
    }
625
    if (pf->color_type == FF_COLOR_GRAY &&
626
        ps->color_type != FF_COLOR_GRAY)
627
        loss |= FF_LOSS_CHROMA;
628
    if (!pf->is_alpha && (ps->is_alpha && has_alpha))
629
        loss |= FF_LOSS_ALPHA;
630
    if (pf->pixel_type == FF_PIXEL_PALETTE &&
631
        (ps->pixel_type != FF_PIXEL_PALETTE && ps->color_type != FF_COLOR_GRAY))
632
        loss |= FF_LOSS_COLORQUANT;
633
    return loss;
634
}
635

    
636
static int avg_bits_per_pixel(enum PixelFormat pix_fmt)
637
{
638
    int bits;
639
    const PixFmtInfo *pf;
640
    const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt];
641

    
642
    pf = &pix_fmt_info[pix_fmt];
643
    switch(pf->pixel_type) {
644
    case FF_PIXEL_PACKED:
645
        switch(pix_fmt) {
646
        case PIX_FMT_YUYV422:
647
        case PIX_FMT_UYVY422:
648
        case PIX_FMT_RGB565BE:
649
        case PIX_FMT_RGB565LE:
650
        case PIX_FMT_RGB555BE:
651
        case PIX_FMT_RGB555LE:
652
        case PIX_FMT_RGB444BE:
653
        case PIX_FMT_RGB444LE:
654
        case PIX_FMT_BGR565BE:
655
        case PIX_FMT_BGR565LE:
656
        case PIX_FMT_BGR555BE:
657
        case PIX_FMT_BGR555LE:
658
        case PIX_FMT_BGR444BE:
659
        case PIX_FMT_BGR444LE:
660
            bits = 16;
661
            break;
662
        case PIX_FMT_UYYVYY411:
663
            bits = 12;
664
            break;
665
        default:
666
            bits = pf->depth * pf->nb_channels;
667
            break;
668
        }
669
        break;
670
    case FF_PIXEL_PLANAR:
671
        if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
672
            bits = pf->depth * pf->nb_channels;
673
        } else {
674
            bits = pf->depth + ((2 * pf->depth) >>
675
                                (desc->log2_chroma_w + desc->log2_chroma_h));
676
        }
677
        break;
678
    case FF_PIXEL_PALETTE:
679
        bits = 8;
680
        break;
681
    default:
682
        bits = -1;
683
        break;
684
    }
685
    return bits;
686
}
687

    
688
static enum PixelFormat avcodec_find_best_pix_fmt1(int64_t pix_fmt_mask,
689
                                      enum PixelFormat src_pix_fmt,
690
                                      int has_alpha,
691
                                      int loss_mask)
692
{
693
    int dist, i, loss, min_dist;
694
    enum PixelFormat dst_pix_fmt;
695

    
696
    /* find exact color match with smallest size */
697
    dst_pix_fmt = PIX_FMT_NONE;
698
    min_dist = 0x7fffffff;
699
    for(i = 0;i < PIX_FMT_NB; i++) {
700
        if (pix_fmt_mask & (1ULL << i)) {
701
            loss = avcodec_get_pix_fmt_loss(i, src_pix_fmt, has_alpha) & loss_mask;
702
            if (loss == 0) {
703
                dist = avg_bits_per_pixel(i);
704
                if (dist < min_dist) {
705
                    min_dist = dist;
706
                    dst_pix_fmt = i;
707
                }
708
            }
709
        }
710
    }
711
    return dst_pix_fmt;
712
}
713

    
714
enum PixelFormat avcodec_find_best_pix_fmt(int64_t pix_fmt_mask, enum PixelFormat src_pix_fmt,
715
                              int has_alpha, int *loss_ptr)
716
{
717
    enum PixelFormat dst_pix_fmt;
718
    int loss_mask, i;
719
    static const int loss_mask_order[] = {
720
        ~0, /* no loss first */
721
        ~FF_LOSS_ALPHA,
722
        ~FF_LOSS_RESOLUTION,
723
        ~(FF_LOSS_COLORSPACE | FF_LOSS_RESOLUTION),
724
        ~FF_LOSS_COLORQUANT,
725
        ~FF_LOSS_DEPTH,
726
        0,
727
    };
728

    
729
    /* try with successive loss */
730
    i = 0;
731
    for(;;) {
732
        loss_mask = loss_mask_order[i++];
733
        dst_pix_fmt = avcodec_find_best_pix_fmt1(pix_fmt_mask, src_pix_fmt,
734
                                                 has_alpha, loss_mask);
735
        if (dst_pix_fmt >= 0)
736
            goto found;
737
        if (loss_mask == 0)
738
            break;
739
    }
740
    return PIX_FMT_NONE;
741
 found:
742
    if (loss_ptr)
743
        *loss_ptr = avcodec_get_pix_fmt_loss(dst_pix_fmt, src_pix_fmt, has_alpha);
744
    return dst_pix_fmt;
745
}
746

    
747
#if LIBAVCODEC_VERSION_MAJOR < 53
748
void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
749
                           const uint8_t *src, int src_wrap,
750
                           int width, int height)
751
{
752
    av_image_copy_plane(dst, dst_wrap, src, src_wrap, width, height);
753
}
754

    
755
int ff_get_plane_bytewidth(enum PixelFormat pix_fmt, int width, int plane)
756
{
757
    return av_image_get_linesize(pix_fmt, width, plane);
758
}
759

    
760
void av_picture_data_copy(uint8_t *dst_data[4], int dst_linesize[4],
761
                          uint8_t *src_data[4], int src_linesize[4],
762
                          enum PixelFormat pix_fmt, int width, int height)
763
{
764
    av_image_copy(dst_data, dst_linesize, src_data, src_linesize,
765
                  pix_fmt, width, height);
766
}
767
#endif
768

    
769
void av_picture_copy(AVPicture *dst, const AVPicture *src,
770
                     enum PixelFormat pix_fmt, int width, int height)
771
{
772
    av_image_copy(dst->data, dst->linesize, src->data,
773
                  src->linesize, pix_fmt, width, height);
774
}
775

    
776
/* 2x2 -> 1x1 */
777
void ff_shrink22(uint8_t *dst, int dst_wrap,
778
                     const uint8_t *src, int src_wrap,
779
                     int width, int height)
780
{
781
    int w;
782
    const uint8_t *s1, *s2;
783
    uint8_t *d;
784

    
785
    for(;height > 0; height--) {
786
        s1 = src;
787
        s2 = s1 + src_wrap;
788
        d = dst;
789
        for(w = width;w >= 4; w-=4) {
790
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
791
            d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2;
792
            d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2;
793
            d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2;
794
            s1 += 8;
795
            s2 += 8;
796
            d += 4;
797
        }
798
        for(;w > 0; w--) {
799
            d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2;
800
            s1 += 2;
801
            s2 += 2;
802
            d++;
803
        }
804
        src += 2 * src_wrap;
805
        dst += dst_wrap;
806
    }
807
}
808

    
809
/* 4x4 -> 1x1 */
810
void ff_shrink44(uint8_t *dst, int dst_wrap,
811
                     const uint8_t *src, int src_wrap,
812
                     int width, int height)
813
{
814
    int w;
815
    const uint8_t *s1, *s2, *s3, *s4;
816
    uint8_t *d;
817

    
818
    for(;height > 0; height--) {
819
        s1 = src;
820
        s2 = s1 + src_wrap;
821
        s3 = s2 + src_wrap;
822
        s4 = s3 + src_wrap;
823
        d = dst;
824
        for(w = width;w > 0; w--) {
825
            d[0] = (s1[0] + s1[1] + s1[2] + s1[3] +
826
                    s2[0] + s2[1] + s2[2] + s2[3] +
827
                    s3[0] + s3[1] + s3[2] + s3[3] +
828
                    s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4;
829
            s1 += 4;
830
            s2 += 4;
831
            s3 += 4;
832
            s4 += 4;
833
            d++;
834
        }
835
        src += 4 * src_wrap;
836
        dst += dst_wrap;
837
    }
838
}
839

    
840
/* 8x8 -> 1x1 */
841
void ff_shrink88(uint8_t *dst, int dst_wrap,
842
                     const uint8_t *src, int src_wrap,
843
                     int width, int height)
844
{
845
    int w, i;
846

    
847
    for(;height > 0; height--) {
848
        for(w = width;w > 0; w--) {
849
            int tmp=0;
850
            for(i=0; i<8; i++){
851
                tmp += src[0] + src[1] + src[2] + src[3] + src[4] + src[5] + src[6] + src[7];
852
                src += src_wrap;
853
            }
854
            *(dst++) = (tmp + 32)>>6;
855
            src += 8 - 8*src_wrap;
856
        }
857
        src += 8*src_wrap - 8*width;
858
        dst += dst_wrap - width;
859
    }
860
}
861

    
862

    
863
int avpicture_alloc(AVPicture *picture,
864
                    enum PixelFormat pix_fmt, int width, int height)
865
{
866
    int size;
867
    void *ptr;
868

    
869
    size = avpicture_fill(picture, NULL, pix_fmt, width, height);
870
    if(size<0)
871
        goto fail;
872
    ptr = av_malloc(size);
873
    if (!ptr)
874
        goto fail;
875
    avpicture_fill(picture, ptr, pix_fmt, width, height);
876
    if(picture->data[1] && !picture->data[2])
877
        ff_set_systematic_pal2((uint32_t*)picture->data[1], pix_fmt);
878

    
879
    return 0;
880
 fail:
881
    memset(picture, 0, sizeof(AVPicture));
882
    return -1;
883
}
884

    
885
void avpicture_free(AVPicture *picture)
886
{
887
    av_free(picture->data[0]);
888
}
889

    
890
/* return true if yuv planar */
891
static inline int is_yuv_planar(const PixFmtInfo *ps)
892
{
893
    return (ps->color_type == FF_COLOR_YUV ||
894
            ps->color_type == FF_COLOR_YUV_JPEG) &&
895
        ps->pixel_type == FF_PIXEL_PLANAR;
896
}
897

    
898
int av_picture_crop(AVPicture *dst, const AVPicture *src,
899
                    enum PixelFormat pix_fmt, int top_band, int left_band)
900
{
901
    int y_shift;
902
    int x_shift;
903

    
904
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB || !is_yuv_planar(&pix_fmt_info[pix_fmt]))
905
        return -1;
906

    
907
    y_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_h;
908
    x_shift = av_pix_fmt_descriptors[pix_fmt].log2_chroma_w;
909

    
910
    dst->data[0] = src->data[0] + (top_band * src->linesize[0]) + left_band;
911
    dst->data[1] = src->data[1] + ((top_band >> y_shift) * src->linesize[1]) + (left_band >> x_shift);
912
    dst->data[2] = src->data[2] + ((top_band >> y_shift) * src->linesize[2]) + (left_band >> x_shift);
913

    
914
    dst->linesize[0] = src->linesize[0];
915
    dst->linesize[1] = src->linesize[1];
916
    dst->linesize[2] = src->linesize[2];
917
    return 0;
918
}
919

    
920
int av_picture_pad(AVPicture *dst, const AVPicture *src, int height, int width,
921
                   enum PixelFormat pix_fmt, int padtop, int padbottom, int padleft, int padright,
922
            int *color)
923
{
924
    uint8_t *optr;
925
    int y_shift;
926
    int x_shift;
927
    int yheight;
928
    int i, y;
929

    
930
    if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB ||
931
        !is_yuv_planar(&pix_fmt_info[pix_fmt])) return -1;
932

    
933
    for (i = 0; i < 3; i++) {
934
        x_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_w : 0;
935
        y_shift = i ? av_pix_fmt_descriptors[pix_fmt].log2_chroma_h : 0;
936

    
937
        if (padtop || padleft) {
938
            memset(dst->data[i], color[i],
939
                dst->linesize[i] * (padtop >> y_shift) + (padleft >> x_shift));
940
        }
941

    
942
        if (padleft || padright) {
943
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
944
                (dst->linesize[i] - (padright >> x_shift));
945
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
946
            for (y = 0; y < yheight; y++) {
947
                memset(optr, color[i], (padleft + padright) >> x_shift);
948
                optr += dst->linesize[i];
949
            }
950
        }
951

    
952
        if (src) { /* first line */
953
            uint8_t *iptr = src->data[i];
954
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
955
                    (padleft >> x_shift);
956
            memcpy(optr, iptr, (width - padleft - padright) >> x_shift);
957
            iptr += src->linesize[i];
958
            optr = dst->data[i] + dst->linesize[i] * (padtop >> y_shift) +
959
                (dst->linesize[i] - (padright >> x_shift));
960
            yheight = (height - 1 - (padtop + padbottom)) >> y_shift;
961
            for (y = 0; y < yheight; y++) {
962
                memset(optr, color[i], (padleft + padright) >> x_shift);
963
                memcpy(optr + ((padleft + padright) >> x_shift), iptr,
964
                       (width - padleft - padright) >> x_shift);
965
                iptr += src->linesize[i];
966
                optr += dst->linesize[i];
967
            }
968
        }
969

    
970
        if (padbottom || padright) {
971
            optr = dst->data[i] + dst->linesize[i] *
972
                ((height - padbottom) >> y_shift) - (padright >> x_shift);
973
            memset(optr, color[i],dst->linesize[i] *
974
                (padbottom >> y_shift) + (padright >> x_shift));
975
        }
976
    }
977
    return 0;
978
}
979

    
980
/* NOTE: we scan all the pixels to have an exact information */
981
static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
982
{
983
    const unsigned char *p;
984
    int src_wrap, ret, x, y;
985
    unsigned int a;
986
    uint32_t *palette = (uint32_t *)src->data[1];
987

    
988
    p = src->data[0];
989
    src_wrap = src->linesize[0] - width;
990
    ret = 0;
991
    for(y=0;y<height;y++) {
992
        for(x=0;x<width;x++) {
993
            a = palette[p[0]] >> 24;
994
            if (a == 0x00) {
995
                ret |= FF_ALPHA_TRANSP;
996
            } else if (a != 0xff) {
997
                ret |= FF_ALPHA_SEMI_TRANSP;
998
            }
999
            p++;
1000
        }
1001
        p += src_wrap;
1002
    }
1003
    return ret;
1004
}
1005

    
1006
int img_get_alpha_info(const AVPicture *src,
1007
                       enum PixelFormat pix_fmt, int width, int height)
1008
{
1009
    const PixFmtInfo *pf = &pix_fmt_info[pix_fmt];
1010
    int ret;
1011

    
1012
    /* no alpha can be represented in format */
1013
    if (!pf->is_alpha)
1014
        return 0;
1015
    switch(pix_fmt) {
1016
    case PIX_FMT_PAL8:
1017
        ret = get_alpha_info_pal8(src, width, height);
1018
        break;
1019
    default:
1020
        /* we do not know, so everything is indicated */
1021
        ret = FF_ALPHA_TRANSP | FF_ALPHA_SEMI_TRANSP;
1022
        break;
1023
    }
1024
    return ret;
1025
}
1026

    
1027
#if !(HAVE_MMX && HAVE_YASM)
1028
/* filter parameters: [-1 4 2 4 -1] // 8 */
1029
static void deinterlace_line_c(uint8_t *dst,
1030
                             const uint8_t *lum_m4, const uint8_t *lum_m3,
1031
                             const uint8_t *lum_m2, const uint8_t *lum_m1,
1032
                             const uint8_t *lum,
1033
                             int size)
1034
{
1035
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1036
    int sum;
1037

    
1038
    for(;size > 0;size--) {
1039
        sum = -lum_m4[0];
1040
        sum += lum_m3[0] << 2;
1041
        sum += lum_m2[0] << 1;
1042
        sum += lum_m1[0] << 2;
1043
        sum += -lum[0];
1044
        dst[0] = cm[(sum + 4) >> 3];
1045
        lum_m4++;
1046
        lum_m3++;
1047
        lum_m2++;
1048
        lum_m1++;
1049
        lum++;
1050
        dst++;
1051
    }
1052
}
1053

    
1054
static void deinterlace_line_inplace_c(uint8_t *lum_m4, uint8_t *lum_m3,
1055
                                       uint8_t *lum_m2, uint8_t *lum_m1,
1056
                                       uint8_t *lum, int size)
1057
{
1058
    uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
1059
    int sum;
1060

    
1061
    for(;size > 0;size--) {
1062
        sum = -lum_m4[0];
1063
        sum += lum_m3[0] << 2;
1064
        sum += lum_m2[0] << 1;
1065
        lum_m4[0]=lum_m2[0];
1066
        sum += lum_m1[0] << 2;
1067
        sum += -lum[0];
1068
        lum_m2[0] = cm[(sum + 4) >> 3];
1069
        lum_m4++;
1070
        lum_m3++;
1071
        lum_m2++;
1072
        lum_m1++;
1073
        lum++;
1074
    }
1075
}
1076
#endif
1077

    
1078
/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
1079
   top field is copied as is, but the bottom field is deinterlaced
1080
   against the top field. */
1081
static void deinterlace_bottom_field(uint8_t *dst, int dst_wrap,
1082
                                    const uint8_t *src1, int src_wrap,
1083
                                    int width, int height)
1084
{
1085
    const uint8_t *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
1086
    int y;
1087

    
1088
    src_m2 = src1;
1089
    src_m1 = src1;
1090
    src_0=&src_m1[src_wrap];
1091
    src_p1=&src_0[src_wrap];
1092
    src_p2=&src_p1[src_wrap];
1093
    for(y=0;y<(height-2);y+=2) {
1094
        memcpy(dst,src_m1,width);
1095
        dst += dst_wrap;
1096
        deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
1097
        src_m2 = src_0;
1098
        src_m1 = src_p1;
1099
        src_0 = src_p2;
1100
        src_p1 += 2*src_wrap;
1101
        src_p2 += 2*src_wrap;
1102
        dst += dst_wrap;
1103
    }
1104
    memcpy(dst,src_m1,width);
1105
    dst += dst_wrap;
1106
    /* do last line */
1107
    deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
1108
}
1109

    
1110
static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
1111
                                             int width, int height)
1112
{
1113
    uint8_t *src_m1, *src_0, *src_p1, *src_p2;
1114
    int y;
1115
    uint8_t *buf;
1116
    buf = (uint8_t*)av_malloc(width);
1117

    
1118
    src_m1 = src1;
1119
    memcpy(buf,src_m1,width);
1120
    src_0=&src_m1[src_wrap];
1121
    src_p1=&src_0[src_wrap];
1122
    src_p2=&src_p1[src_wrap];
1123
    for(y=0;y<(height-2);y+=2) {
1124
        deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
1125
        src_m1 = src_p1;
1126
        src_0 = src_p2;
1127
        src_p1 += 2*src_wrap;
1128
        src_p2 += 2*src_wrap;
1129
    }
1130
    /* do last line */
1131
    deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
1132
    av_free(buf);
1133
}
1134

    
1135
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
1136
                          enum PixelFormat pix_fmt, int width, int height)
1137
{
1138
    int i;
1139

    
1140
    if (pix_fmt != PIX_FMT_YUV420P &&
1141
        pix_fmt != PIX_FMT_YUVJ420P &&
1142
        pix_fmt != PIX_FMT_YUV422P &&
1143
        pix_fmt != PIX_FMT_YUVJ422P &&
1144
        pix_fmt != PIX_FMT_YUV444P &&
1145
        pix_fmt != PIX_FMT_YUV411P &&
1146
        pix_fmt != PIX_FMT_GRAY8)
1147
        return -1;
1148
    if ((width & 3) != 0 || (height & 3) != 0)
1149
        return -1;
1150

    
1151
    for(i=0;i<3;i++) {
1152
        if (i == 1) {
1153
            switch(pix_fmt) {
1154
            case PIX_FMT_YUVJ420P:
1155
            case PIX_FMT_YUV420P:
1156
                width >>= 1;
1157
                height >>= 1;
1158
                break;
1159
            case PIX_FMT_YUV422P:
1160
            case PIX_FMT_YUVJ422P:
1161
                width >>= 1;
1162
                break;
1163
            case PIX_FMT_YUV411P:
1164
                width >>= 2;
1165
                break;
1166
            default:
1167
                break;
1168
            }
1169
            if (pix_fmt == PIX_FMT_GRAY8) {
1170
                break;
1171
            }
1172
        }
1173
        if (src == dst) {
1174
            deinterlace_bottom_field_inplace(dst->data[i], dst->linesize[i],
1175
                                 width, height);
1176
        } else {
1177
            deinterlace_bottom_field(dst->data[i],dst->linesize[i],
1178
                                        src->data[i], src->linesize[i],
1179
                                        width, height);
1180
        }
1181
    }
1182
    emms_c();
1183
    return 0;
1184
}
1185