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ffmpeg / libavformat / img2.c @ a06ba2a1

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1 03cfe134 Michael Niedermayer
/*
2
 * Image format
3
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4
 * Copyright (c) 2004 Michael Niedermayer
5
 *
6 b78e7197 Diego Biurrun
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9 03cfe134 Michael Niedermayer
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11 b78e7197 Diego Biurrun
 * version 2.1 of the License, or (at your option) any later version.
12 03cfe134 Michael Niedermayer
 *
13 b78e7197 Diego Biurrun
 * FFmpeg is distributed in the hope that it will be useful,
14 03cfe134 Michael Niedermayer
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19 b78e7197 Diego Biurrun
 * License along with FFmpeg; if not, write to the Free Software
20 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 03cfe134 Michael Niedermayer
 */
22
#include "avformat.h"
23 75e61b0e Måns Rullgård
#include "avstring.h"
24 03cfe134 Michael Niedermayer
25
typedef struct {
26
    int img_first;
27
    int img_last;
28
    int img_number;
29
    int img_count;
30
    int is_pipe;
31
    char path[1024];
32
} VideoData;
33
34
typedef struct {
35
    enum CodecID id;
36
    const char *str;
37
} IdStrMap;
38
39
static const IdStrMap img_tags[] = {
40
    { CODEC_ID_MJPEG     , "jpeg"},
41
    { CODEC_ID_MJPEG     , "jpg"},
42
    { CODEC_ID_LJPEG     , "ljpg"},
43 4eff7cf4 Michael Niedermayer
    { CODEC_ID_PNG       , "png"},
44 042e0add Loren Merritt
    { CODEC_ID_PNG       , "mng"},
45 5b6d5596 Michael Niedermayer
    { CODEC_ID_PPM       , "ppm"},
46
    { CODEC_ID_PGM       , "pgm"},
47
    { CODEC_ID_PGMYUV    , "pgmyuv"},
48
    { CODEC_ID_PBM       , "pbm"},
49
    { CODEC_ID_PAM       , "pam"},
50 03cfe134 Michael Niedermayer
    { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
51
    { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
52
    { CODEC_ID_MPEG4     , "mpg4-img"},
53
    { CODEC_ID_FFV1      , "ffv1-img"},
54 55cf1959 Michael Niedermayer
    { CODEC_ID_RAWVIDEO  , "y"},
55 9fa62f2a Måns Rullgård
    { CODEC_ID_BMP       , "bmp"},
56 6f9e492a Baptiste Coudurier
    { CODEC_ID_GIF       , "gif"},
57 79f7c32f Kostya Shishkov
    { CODEC_ID_TARGA     , "tga"},
58
    { CODEC_ID_TIFF      , "tiff"},
59 2d99eed1 Xiaohui Sun
    { CODEC_ID_SGI       , "sgi"},
60 8d2fb333 Ivo van Poorten
    { CODEC_ID_PTX       , "ptx"},
61 b4abe1d1 Ivo van Poorten
    { CODEC_ID_PCX       , "pcx"},
62 d43df959 Ivo van Poorten
    { CODEC_ID_SUNRAST   , "sun"},
63
    { CODEC_ID_SUNRAST   , "ras"},
64
    { CODEC_ID_SUNRAST   , "rs"},
65
    { CODEC_ID_SUNRAST   , "im1"},
66
    { CODEC_ID_SUNRAST   , "im8"},
67
    { CODEC_ID_SUNRAST   , "im24"},
68
    { CODEC_ID_SUNRAST   , "sunras"},
69 03cfe134 Michael Niedermayer
    {0, NULL}
70
};
71
72 55cf1959 Michael Niedermayer
static int sizes[][2] = {
73
    { 640, 480 },
74
    { 720, 480 },
75
    { 720, 576 },
76
    { 352, 288 },
77
    { 352, 240 },
78
    { 160, 128 },
79
    { 512, 384 },
80
    { 640, 352 },
81
    { 640, 240 },
82
};
83
84
static int infer_size(int *width_ptr, int *height_ptr, int size)
85
{
86
    int i;
87
88
    for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
89
        if ((sizes[i][0] * sizes[i][1]) == size) {
90
            *width_ptr = sizes[i][0];
91
            *height_ptr = sizes[i][1];
92
            return 0;
93
        }
94
    }
95
    return -1;
96
}
97 03cfe134 Michael Niedermayer
static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
98
{
99 3ed02129 Michael Niedermayer
    str= strrchr(str, '.');
100
    if(!str) return CODEC_ID_NONE;
101
    str++;
102 03cfe134 Michael Niedermayer
103
    while (tags->id) {
104
        int i;
105
        for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
106
            if(tags->str[i]==0 && str[i]==0)
107
                return tags->id;
108
        }
109
110
        tags++;
111
    }
112
    return CODEC_ID_NONE;
113
}
114
115
/* return -1 if no image found */
116 115329f1 Diego Biurrun
static int find_image_range(int *pfirst_index, int *plast_index,
117 03cfe134 Michael Niedermayer
                            const char *path)
118
{
119
    char buf[1024];
120
    int range, last_index, range1, first_index;
121
122
    /* find the first image */
123
    for(first_index = 0; first_index < 5; first_index++) {
124 5c07cf53 Michel Bardiaux
        if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
125 115329f1 Diego Biurrun
            *pfirst_index =
126 61fb3183 Michael Niedermayer
            *plast_index = 1;
127
            return 0;
128
        }
129 03cfe134 Michael Niedermayer
        if (url_exist(buf))
130
            break;
131
    }
132
    if (first_index == 5)
133
        goto fail;
134 115329f1 Diego Biurrun
135 03cfe134 Michael Niedermayer
    /* find the last image */
136
    last_index = first_index;
137
    for(;;) {
138
        range = 0;
139
        for(;;) {
140
            if (!range)
141
                range1 = 1;
142
            else
143
                range1 = 2 * range;
144 5c07cf53 Michel Bardiaux
            if (av_get_frame_filename(buf, sizeof(buf), path,
145
                                      last_index + range1) < 0)
146 03cfe134 Michael Niedermayer
                goto fail;
147
            if (!url_exist(buf))
148
                break;
149
            range = range1;
150
            /* just in case... */
151
            if (range >= (1 << 30))
152
                goto fail;
153
        }
154
        /* we are sure than image last_index + range exists */
155
        if (!range)
156
            break;
157
        last_index += range;
158
    }
159
    *pfirst_index = first_index;
160
    *plast_index = last_index;
161
    return 0;
162
 fail:
163
    return -1;
164
}
165
166
167
static int image_probe(AVProbeData *p)
168
{
169 e825b500 Joakim Plate
    if (p->filename && av_str2id(img_tags, p->filename)) {
170 d1e8675c Baptiste Coudurier
        if (av_filename_number_test(p->filename))
171
            return AVPROBE_SCORE_MAX;
172
        else
173
            return AVPROBE_SCORE_MAX/2;
174
    }
175
    return 0;
176 03cfe134 Michael Niedermayer
}
177
178 5b6d5596 Michael Niedermayer
enum CodecID av_guess_image2_codec(const char *filename){
179
    return av_str2id(img_tags, filename);
180
}
181
182 03cfe134 Michael Niedermayer
static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
183
{
184
    VideoData *s = s1->priv_data;
185
    int first_index, last_index;
186
    AVStream *st;
187
188
    s1->ctx_flags |= AVFMTCTX_NOHEADER;
189
190
    st = av_new_stream(s1, 0);
191
    if (!st) {
192 8fa36ae0 François Revol
        return AVERROR(ENOMEM);
193 03cfe134 Michael Niedermayer
    }
194
195 75e61b0e Måns Rullgård
    av_strlcpy(s->path, s1->filename, sizeof(s->path));
196 03cfe134 Michael Niedermayer
    s->img_number = 0;
197
    s->img_count = 0;
198 115329f1 Diego Biurrun
199 03cfe134 Michael Niedermayer
    /* find format */
200
    if (s1->iformat->flags & AVFMT_NOFILE)
201
        s->is_pipe = 0;
202 146210ca Michael Niedermayer
    else{
203 03cfe134 Michael Niedermayer
        s->is_pipe = 1;
204 57004ff1 Aurelien Jacobs
        st->need_parsing = AVSTREAM_PARSE_FULL;
205 146210ca Michael Niedermayer
    }
206 115329f1 Diego Biurrun
207 c04c3282 Michael Niedermayer
    if (!ap->time_base.num) {
208 c0df9d75 Michael Niedermayer
        av_set_pts_info(st, 60, 1, 25);
209 03cfe134 Michael Niedermayer
    } else {
210 c0df9d75 Michael Niedermayer
        av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
211 03cfe134 Michael Niedermayer
    }
212 115329f1 Diego Biurrun
213 c04c3282 Michael Niedermayer
    if(ap->width && ap->height){
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        st->codec->width = ap->width;
215
        st->codec->height= ap->height;
216 55cf1959 Michael Niedermayer
    }
217 115329f1 Diego Biurrun
218 03cfe134 Michael Niedermayer
    if (!s->is_pipe) {
219
        if (find_image_range(&first_index, &last_index, s->path) < 0)
220 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
221 03cfe134 Michael Niedermayer
        s->img_first = first_index;
222
        s->img_last = last_index;
223
        s->img_number = first_index;
224
        /* compute duration */
225
        st->start_time = 0;
226 c0df9d75 Michael Niedermayer
        st->duration = last_index - first_index + 1;
227 03cfe134 Michael Niedermayer
    }
228 115329f1 Diego Biurrun
229 5b6d5596 Michael Niedermayer
    if(ap->video_codec_id){
230 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_VIDEO;
231
        st->codec->codec_id = ap->video_codec_id;
232 5b6d5596 Michael Niedermayer
    }else if(ap->audio_codec_id){
233 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_AUDIO;
234
        st->codec->codec_id = ap->audio_codec_id;
235 5b6d5596 Michael Niedermayer
    }else{
236 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_VIDEO;
237
        st->codec->codec_id = av_str2id(img_tags, s->path);
238 5b6d5596 Michael Niedermayer
    }
239 01f4895c Michael Niedermayer
    if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
240
        st->codec->pix_fmt = ap->pix_fmt;
241 03cfe134 Michael Niedermayer
242
    return 0;
243
}
244
245
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
246
{
247
    VideoData *s = s1->priv_data;
248
    char filename[1024];
249 55cf1959 Michael Niedermayer
    int i;
250
    int size[3]={0}, ret[3]={0};
251 899681cd Björn Axelsson
    ByteIOContext *f[3];
252 01f4895c Michael Niedermayer
    AVCodecContext *codec= s1->streams[0]->codec;
253 03cfe134 Michael Niedermayer
254
    if (!s->is_pipe) {
255
        /* loop over input */
256 5894e1bb Víctor Paesa
        if (s1->loop_input && s->img_number > s->img_last) {
257 03cfe134 Michael Niedermayer
            s->img_number = s->img_first;
258 b339fb00 Michael Niedermayer
        }
259 5c07cf53 Michel Bardiaux
        if (av_get_frame_filename(filename, sizeof(filename),
260
                                  s->path, s->img_number)<0 && s->img_number > 1)
261 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
262 55cf1959 Michael Niedermayer
        for(i=0; i<3; i++){
263 899681cd Björn Axelsson
            if (url_fopen(&f[i], filename, URL_RDONLY) < 0)
264 6f3e0b21 Panagiotis Issaris
                return AVERROR(EIO);
265 a965c478 Aurelien Jacobs
            size[i]= url_fsize(f[i]);
266 115329f1 Diego Biurrun
267 55cf1959 Michael Niedermayer
            if(codec->codec_id != CODEC_ID_RAWVIDEO)
268
                break;
269
            filename[ strlen(filename) - 1 ]= 'U' + i;
270
        }
271 115329f1 Diego Biurrun
272 55cf1959 Michael Niedermayer
        if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
273
            infer_size(&codec->width, &codec->height, size[0]);
274 03cfe134 Michael Niedermayer
    } else {
275 899681cd Björn Axelsson
        f[0] = s1->pb;
276 55cf1959 Michael Niedermayer
        if (url_feof(f[0]))
277 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
278 55cf1959 Michael Niedermayer
        size[0]= 4096;
279 03cfe134 Michael Niedermayer
    }
280
281 55cf1959 Michael Niedermayer
    av_new_packet(pkt, size[0] + size[1] + size[2]);
282 03cfe134 Michael Niedermayer
    pkt->stream_index = 0;
283
    pkt->flags |= PKT_FLAG_KEY;
284
285 55cf1959 Michael Niedermayer
    pkt->size= 0;
286
    for(i=0; i<3; i++){
287
        if(size[i]){
288
            ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
289
            if (!s->is_pipe)
290
                url_fclose(f[i]);
291
            if(ret[i]>0)
292
                pkt->size += ret[i];
293
        }
294 03cfe134 Michael Niedermayer
    }
295
296 55cf1959 Michael Niedermayer
    if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
297 03cfe134 Michael Niedermayer
        av_free_packet(pkt);
298 6f3e0b21 Panagiotis Issaris
        return AVERROR(EIO); /* signal EOF */
299 03cfe134 Michael Niedermayer
    } else {
300
        s->img_count++;
301
        s->img_number++;
302
        return 0;
303
    }
304
}
305
306
static int img_read_close(AVFormatContext *s1)
307
{
308
    return 0;
309
}
310
311 8228bff5 Diego Biurrun
#ifdef CONFIG_MUXERS
312 03cfe134 Michael Niedermayer
/******************************************************/
313
/* image output */
314
315
static int img_write_header(AVFormatContext *s)
316
{
317
    VideoData *img = s->priv_data;
318
319
    img->img_number = 1;
320 75e61b0e Måns Rullgård
    av_strlcpy(img->path, s->filename, sizeof(img->path));
321 03cfe134 Michael Niedermayer
322
    /* find format */
323
    if (s->oformat->flags & AVFMT_NOFILE)
324
        img->is_pipe = 0;
325
    else
326
        img->is_pipe = 1;
327 115329f1 Diego Biurrun
328 03cfe134 Michael Niedermayer
    return 0;
329
}
330
331
static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
332
{
333
    VideoData *img = s->priv_data;
334 899681cd Björn Axelsson
    ByteIOContext *pb[3];
335 03cfe134 Michael Niedermayer
    char filename[1024];
336 01f4895c Michael Niedermayer
    AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
337 55cf1959 Michael Niedermayer
    int i;
338 03cfe134 Michael Niedermayer
339
    if (!img->is_pipe) {
340 5c07cf53 Michel Bardiaux
        if (av_get_frame_filename(filename, sizeof(filename),
341
                                  img->path, img->img_number) < 0 && img->img_number>1)
342 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
343 55cf1959 Michael Niedermayer
        for(i=0; i<3; i++){
344 899681cd Björn Axelsson
            if (url_fopen(&pb[i], filename, URL_WRONLY) < 0)
345 6f3e0b21 Panagiotis Issaris
                return AVERROR(EIO);
346 115329f1 Diego Biurrun
347 55cf1959 Michael Niedermayer
            if(codec->codec_id != CODEC_ID_RAWVIDEO)
348
                break;
349
            filename[ strlen(filename) - 1 ]= 'U' + i;
350
        }
351 03cfe134 Michael Niedermayer
    } else {
352 899681cd Björn Axelsson
        pb[0] = s->pb;
353 03cfe134 Michael Niedermayer
    }
354 115329f1 Diego Biurrun
355 55cf1959 Michael Niedermayer
    if(codec->codec_id == CODEC_ID_RAWVIDEO){
356 2c34596f Michael Niedermayer
        int ysize = codec->width * codec->height;
357
        put_buffer(pb[0], pkt->data        , ysize);
358
        put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
359
        put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
360 55cf1959 Michael Niedermayer
        put_flush_packet(pb[1]);
361
        put_flush_packet(pb[2]);
362
        url_fclose(pb[1]);
363
        url_fclose(pb[2]);
364
    }else{
365
        put_buffer(pb[0], pkt->data, pkt->size);
366
    }
367
    put_flush_packet(pb[0]);
368 03cfe134 Michael Niedermayer
    if (!img->is_pipe) {
369 55cf1959 Michael Niedermayer
        url_fclose(pb[0]);
370 03cfe134 Michael Niedermayer
    }
371
372
    img->img_number++;
373
    return 0;
374
}
375
376
static int img_write_trailer(AVFormatContext *s)
377
{
378
    return 0;
379
}
380
381 8228bff5 Diego Biurrun
#endif /* CONFIG_MUXERS */
382
383 03cfe134 Michael Niedermayer
/* input */
384 ff70e601 Måns Rullgård
#ifdef CONFIG_IMAGE2_DEMUXER
385
AVInputFormat image2_demuxer = {
386 03cfe134 Michael Niedermayer
    "image2",
387
    "image2 sequence",
388
    sizeof(VideoData),
389
    image_probe,
390
    img_read_header,
391
    img_read_packet,
392
    img_read_close,
393
    NULL,
394
    NULL,
395 61fb3183 Michael Niedermayer
    AVFMT_NOFILE,
396 03cfe134 Michael Niedermayer
};
397 ff70e601 Måns Rullgård
#endif
398
#ifdef CONFIG_IMAGE2PIPE_DEMUXER
399
AVInputFormat image2pipe_demuxer = {
400 03cfe134 Michael Niedermayer
    "image2pipe",
401
    "piped image2 sequence",
402
    sizeof(VideoData),
403
    NULL, /* no probe */
404
    img_read_header,
405
    img_read_packet,
406
    img_read_close,
407
    NULL,
408
};
409 ff70e601 Måns Rullgård
#endif
410 03cfe134 Michael Niedermayer
411
/* output */
412 ff70e601 Måns Rullgård
#ifdef CONFIG_IMAGE2_MUXER
413
AVOutputFormat image2_muxer = {
414 03cfe134 Michael Niedermayer
    "image2",
415
    "image2 sequence",
416
    "",
417
    "",
418
    sizeof(VideoData),
419
    CODEC_ID_NONE,
420
    CODEC_ID_MJPEG,
421
    img_write_header,
422
    img_write_packet,
423
    img_write_trailer,
424 61fb3183 Michael Niedermayer
    AVFMT_NOFILE,
425 03cfe134 Michael Niedermayer
};
426 ff70e601 Måns Rullgård
#endif
427
#ifdef CONFIG_IMAGE2PIPE_MUXER
428
AVOutputFormat image2pipe_muxer = {
429 03cfe134 Michael Niedermayer
    "image2pipe",
430
    "piped image2 sequence",
431
    "",
432
    "",
433
    sizeof(VideoData),
434
    CODEC_ID_NONE,
435
    CODEC_ID_MJPEG,
436
    img_write_header,
437
    img_write_packet,
438
    img_write_trailer,
439
};
440 8228bff5 Diego Biurrun
#endif