Statistics
| Branch: | Revision:

ffmpeg / libavformat / img2.c @ a23c9c4a

History | View | Annotate | Download (11.1 KB)

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 5b6d5596 Michael Niedermayer
    { CODEC_ID_PPM       , "ppm"},
45
    { CODEC_ID_PGM       , "pgm"},
46
    { CODEC_ID_PGMYUV    , "pgmyuv"},
47
    { CODEC_ID_PBM       , "pbm"},
48
    { CODEC_ID_PAM       , "pam"},
49 03cfe134 Michael Niedermayer
    { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
50
    { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
51
    { CODEC_ID_MPEG4     , "mpg4-img"},
52
    { CODEC_ID_FFV1      , "ffv1-img"},
53 55cf1959 Michael Niedermayer
    { CODEC_ID_RAWVIDEO  , "y"},
54 9fa62f2a Måns Rullgård
    { CODEC_ID_BMP       , "bmp"},
55 6f9e492a Baptiste Coudurier
    { CODEC_ID_GIF       , "gif"},
56 79f7c32f Kostya Shishkov
    { CODEC_ID_TARGA     , "tga"},
57
    { CODEC_ID_TIFF      , "tiff"},
58 2d99eed1 Xiaohui Sun
    { CODEC_ID_SGI       , "sgi"},
59 8d2fb333 Ivo van Poorten
    { CODEC_ID_PTX       , "ptx"},
60 b4abe1d1 Ivo van Poorten
    { CODEC_ID_PCX       , "pcx"},
61 d43df959 Ivo van Poorten
    { CODEC_ID_SUNRAST   , "sun"},
62
    { CODEC_ID_SUNRAST   , "ras"},
63
    { CODEC_ID_SUNRAST   , "rs"},
64
    { CODEC_ID_SUNRAST   , "im1"},
65
    { CODEC_ID_SUNRAST   , "im8"},
66
    { CODEC_ID_SUNRAST   , "im24"},
67
    { CODEC_ID_SUNRAST   , "sunras"},
68 03cfe134 Michael Niedermayer
    {0, NULL}
69
};
70
71 55cf1959 Michael Niedermayer
static int sizes[][2] = {
72
    { 640, 480 },
73
    { 720, 480 },
74
    { 720, 576 },
75
    { 352, 288 },
76
    { 352, 240 },
77
    { 160, 128 },
78
    { 512, 384 },
79
    { 640, 352 },
80
    { 640, 240 },
81
};
82
83
static int infer_size(int *width_ptr, int *height_ptr, int size)
84
{
85
    int i;
86
87
    for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
88
        if ((sizes[i][0] * sizes[i][1]) == size) {
89
            *width_ptr = sizes[i][0];
90
            *height_ptr = sizes[i][1];
91
            return 0;
92
        }
93
    }
94
    return -1;
95
}
96 03cfe134 Michael Niedermayer
static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
97
{
98 3ed02129 Michael Niedermayer
    str= strrchr(str, '.');
99
    if(!str) return CODEC_ID_NONE;
100
    str++;
101 03cfe134 Michael Niedermayer
102
    while (tags->id) {
103
        int i;
104
        for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
105
            if(tags->str[i]==0 && str[i]==0)
106
                return tags->id;
107
        }
108
109
        tags++;
110
    }
111
    return CODEC_ID_NONE;
112
}
113
114
/* return -1 if no image found */
115 115329f1 Diego Biurrun
static int find_image_range(int *pfirst_index, int *plast_index,
116 03cfe134 Michael Niedermayer
                            const char *path)
117
{
118
    char buf[1024];
119
    int range, last_index, range1, first_index;
120
121
    /* find the first image */
122
    for(first_index = 0; first_index < 5; first_index++) {
123 5c07cf53 Michel Bardiaux
        if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
124 115329f1 Diego Biurrun
            *pfirst_index =
125 61fb3183 Michael Niedermayer
            *plast_index = 1;
126
            return 0;
127
        }
128 03cfe134 Michael Niedermayer
        if (url_exist(buf))
129
            break;
130
    }
131
    if (first_index == 5)
132
        goto fail;
133 115329f1 Diego Biurrun
134 03cfe134 Michael Niedermayer
    /* find the last image */
135
    last_index = first_index;
136
    for(;;) {
137
        range = 0;
138
        for(;;) {
139
            if (!range)
140
                range1 = 1;
141
            else
142
                range1 = 2 * range;
143 5c07cf53 Michel Bardiaux
            if (av_get_frame_filename(buf, sizeof(buf), path,
144
                                      last_index + range1) < 0)
145 03cfe134 Michael Niedermayer
                goto fail;
146
            if (!url_exist(buf))
147
                break;
148
            range = range1;
149
            /* just in case... */
150
            if (range >= (1 << 30))
151
                goto fail;
152
        }
153
        /* we are sure than image last_index + range exists */
154
        if (!range)
155
            break;
156
        last_index += range;
157
    }
158
    *pfirst_index = first_index;
159
    *plast_index = last_index;
160
    return 0;
161
 fail:
162
    return -1;
163
}
164
165
166
static int image_probe(AVProbeData *p)
167
{
168 e825b500 Joakim Plate
    if (p->filename && av_str2id(img_tags, p->filename)) {
169 d1e8675c Baptiste Coudurier
        if (av_filename_number_test(p->filename))
170
            return AVPROBE_SCORE_MAX;
171
        else
172
            return AVPROBE_SCORE_MAX/2;
173
    }
174
    return 0;
175 03cfe134 Michael Niedermayer
}
176
177 5b6d5596 Michael Niedermayer
enum CodecID av_guess_image2_codec(const char *filename){
178
    return av_str2id(img_tags, filename);
179
}
180
181 03cfe134 Michael Niedermayer
static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
182
{
183
    VideoData *s = s1->priv_data;
184
    int first_index, last_index;
185
    AVStream *st;
186
187
    s1->ctx_flags |= AVFMTCTX_NOHEADER;
188
189
    st = av_new_stream(s1, 0);
190
    if (!st) {
191 8fa36ae0 François Revol
        return AVERROR(ENOMEM);
192 03cfe134 Michael Niedermayer
    }
193
194 75e61b0e Måns Rullgård
    av_strlcpy(s->path, s1->filename, sizeof(s->path));
195 03cfe134 Michael Niedermayer
    s->img_number = 0;
196
    s->img_count = 0;
197 115329f1 Diego Biurrun
198 03cfe134 Michael Niedermayer
    /* find format */
199
    if (s1->iformat->flags & AVFMT_NOFILE)
200
        s->is_pipe = 0;
201 146210ca Michael Niedermayer
    else{
202 03cfe134 Michael Niedermayer
        s->is_pipe = 1;
203 57004ff1 Aurelien Jacobs
        st->need_parsing = AVSTREAM_PARSE_FULL;
204 146210ca Michael Niedermayer
    }
205 115329f1 Diego Biurrun
206 c04c3282 Michael Niedermayer
    if (!ap->time_base.num) {
207 c0df9d75 Michael Niedermayer
        av_set_pts_info(st, 60, 1, 25);
208 03cfe134 Michael Niedermayer
    } else {
209 c0df9d75 Michael Niedermayer
        av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
210 03cfe134 Michael Niedermayer
    }
211 115329f1 Diego Biurrun
212 c04c3282 Michael Niedermayer
    if(ap->width && ap->height){
213 01f4895c Michael Niedermayer
        st->codec->width = ap->width;
214
        st->codec->height= ap->height;
215 55cf1959 Michael Niedermayer
    }
216 115329f1 Diego Biurrun
217 03cfe134 Michael Niedermayer
    if (!s->is_pipe) {
218
        if (find_image_range(&first_index, &last_index, s->path) < 0)
219 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
220 03cfe134 Michael Niedermayer
        s->img_first = first_index;
221
        s->img_last = last_index;
222
        s->img_number = first_index;
223
        /* compute duration */
224
        st->start_time = 0;
225 c0df9d75 Michael Niedermayer
        st->duration = last_index - first_index + 1;
226 03cfe134 Michael Niedermayer
    }
227 115329f1 Diego Biurrun
228 5b6d5596 Michael Niedermayer
    if(ap->video_codec_id){
229 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_VIDEO;
230
        st->codec->codec_id = ap->video_codec_id;
231 5b6d5596 Michael Niedermayer
    }else if(ap->audio_codec_id){
232 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_AUDIO;
233
        st->codec->codec_id = ap->audio_codec_id;
234 5b6d5596 Michael Niedermayer
    }else{
235 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_VIDEO;
236
        st->codec->codec_id = av_str2id(img_tags, s->path);
237 5b6d5596 Michael Niedermayer
    }
238 01f4895c Michael Niedermayer
    if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
239
        st->codec->pix_fmt = ap->pix_fmt;
240 03cfe134 Michael Niedermayer
241
    return 0;
242
}
243
244
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
245
{
246
    VideoData *s = s1->priv_data;
247
    char filename[1024];
248 55cf1959 Michael Niedermayer
    int i;
249
    int size[3]={0}, ret[3]={0};
250 899681cd Björn Axelsson
    ByteIOContext *f[3];
251 01f4895c Michael Niedermayer
    AVCodecContext *codec= s1->streams[0]->codec;
252 03cfe134 Michael Niedermayer
253
    if (!s->is_pipe) {
254
        /* loop over input */
255 5894e1bb Víctor Paesa
        if (s1->loop_input && s->img_number > s->img_last) {
256 03cfe134 Michael Niedermayer
            s->img_number = s->img_first;
257 b339fb00 Michael Niedermayer
        }
258 5c07cf53 Michel Bardiaux
        if (av_get_frame_filename(filename, sizeof(filename),
259
                                  s->path, s->img_number)<0 && s->img_number > 1)
260 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
261 55cf1959 Michael Niedermayer
        for(i=0; i<3; i++){
262 899681cd Björn Axelsson
            if (url_fopen(&f[i], filename, URL_RDONLY) < 0)
263 6f3e0b21 Panagiotis Issaris
                return AVERROR(EIO);
264 a965c478 Aurelien Jacobs
            size[i]= url_fsize(f[i]);
265 115329f1 Diego Biurrun
266 55cf1959 Michael Niedermayer
            if(codec->codec_id != CODEC_ID_RAWVIDEO)
267
                break;
268
            filename[ strlen(filename) - 1 ]= 'U' + i;
269
        }
270 115329f1 Diego Biurrun
271 55cf1959 Michael Niedermayer
        if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
272
            infer_size(&codec->width, &codec->height, size[0]);
273 03cfe134 Michael Niedermayer
    } else {
274 899681cd Björn Axelsson
        f[0] = s1->pb;
275 55cf1959 Michael Niedermayer
        if (url_feof(f[0]))
276 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
277 55cf1959 Michael Niedermayer
        size[0]= 4096;
278 03cfe134 Michael Niedermayer
    }
279
280 55cf1959 Michael Niedermayer
    av_new_packet(pkt, size[0] + size[1] + size[2]);
281 03cfe134 Michael Niedermayer
    pkt->stream_index = 0;
282
    pkt->flags |= PKT_FLAG_KEY;
283
284 55cf1959 Michael Niedermayer
    pkt->size= 0;
285
    for(i=0; i<3; i++){
286
        if(size[i]){
287
            ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
288
            if (!s->is_pipe)
289
                url_fclose(f[i]);
290
            if(ret[i]>0)
291
                pkt->size += ret[i];
292
        }
293 03cfe134 Michael Niedermayer
    }
294
295 55cf1959 Michael Niedermayer
    if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
296 03cfe134 Michael Niedermayer
        av_free_packet(pkt);
297 6f3e0b21 Panagiotis Issaris
        return AVERROR(EIO); /* signal EOF */
298 03cfe134 Michael Niedermayer
    } else {
299
        s->img_count++;
300
        s->img_number++;
301
        return 0;
302
    }
303
}
304
305
static int img_read_close(AVFormatContext *s1)
306
{
307
    return 0;
308
}
309
310 8228bff5 Diego Biurrun
#ifdef CONFIG_MUXERS
311 03cfe134 Michael Niedermayer
/******************************************************/
312
/* image output */
313
314
static int img_write_header(AVFormatContext *s)
315
{
316
    VideoData *img = s->priv_data;
317
318
    img->img_number = 1;
319 75e61b0e Måns Rullgård
    av_strlcpy(img->path, s->filename, sizeof(img->path));
320 03cfe134 Michael Niedermayer
321
    /* find format */
322
    if (s->oformat->flags & AVFMT_NOFILE)
323
        img->is_pipe = 0;
324
    else
325
        img->is_pipe = 1;
326 115329f1 Diego Biurrun
327 03cfe134 Michael Niedermayer
    return 0;
328
}
329
330
static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
331
{
332
    VideoData *img = s->priv_data;
333 899681cd Björn Axelsson
    ByteIOContext *pb[3];
334 03cfe134 Michael Niedermayer
    char filename[1024];
335 01f4895c Michael Niedermayer
    AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
336 55cf1959 Michael Niedermayer
    int i;
337 03cfe134 Michael Niedermayer
338
    if (!img->is_pipe) {
339 5c07cf53 Michel Bardiaux
        if (av_get_frame_filename(filename, sizeof(filename),
340
                                  img->path, img->img_number) < 0 && img->img_number>1)
341 6f3e0b21 Panagiotis Issaris
            return AVERROR(EIO);
342 55cf1959 Michael Niedermayer
        for(i=0; i<3; i++){
343 899681cd Björn Axelsson
            if (url_fopen(&pb[i], filename, URL_WRONLY) < 0)
344 6f3e0b21 Panagiotis Issaris
                return AVERROR(EIO);
345 115329f1 Diego Biurrun
346 55cf1959 Michael Niedermayer
            if(codec->codec_id != CODEC_ID_RAWVIDEO)
347
                break;
348
            filename[ strlen(filename) - 1 ]= 'U' + i;
349
        }
350 03cfe134 Michael Niedermayer
    } else {
351 899681cd Björn Axelsson
        pb[0] = s->pb;
352 03cfe134 Michael Niedermayer
    }
353 115329f1 Diego Biurrun
354 55cf1959 Michael Niedermayer
    if(codec->codec_id == CODEC_ID_RAWVIDEO){
355 2c34596f Michael Niedermayer
        int ysize = codec->width * codec->height;
356
        put_buffer(pb[0], pkt->data        , ysize);
357
        put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
358
        put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
359 55cf1959 Michael Niedermayer
        put_flush_packet(pb[1]);
360
        put_flush_packet(pb[2]);
361
        url_fclose(pb[1]);
362
        url_fclose(pb[2]);
363
    }else{
364
        put_buffer(pb[0], pkt->data, pkt->size);
365
    }
366
    put_flush_packet(pb[0]);
367 03cfe134 Michael Niedermayer
    if (!img->is_pipe) {
368 55cf1959 Michael Niedermayer
        url_fclose(pb[0]);
369 03cfe134 Michael Niedermayer
    }
370
371
    img->img_number++;
372
    return 0;
373
}
374
375
static int img_write_trailer(AVFormatContext *s)
376
{
377
    return 0;
378
}
379
380 8228bff5 Diego Biurrun
#endif /* CONFIG_MUXERS */
381
382 03cfe134 Michael Niedermayer
/* input */
383 ff70e601 Måns Rullgård
#ifdef CONFIG_IMAGE2_DEMUXER
384
AVInputFormat image2_demuxer = {
385 03cfe134 Michael Niedermayer
    "image2",
386
    "image2 sequence",
387
    sizeof(VideoData),
388
    image_probe,
389
    img_read_header,
390
    img_read_packet,
391
    img_read_close,
392
    NULL,
393
    NULL,
394 61fb3183 Michael Niedermayer
    AVFMT_NOFILE,
395 03cfe134 Michael Niedermayer
};
396 ff70e601 Måns Rullgård
#endif
397
#ifdef CONFIG_IMAGE2PIPE_DEMUXER
398
AVInputFormat image2pipe_demuxer = {
399 03cfe134 Michael Niedermayer
    "image2pipe",
400
    "piped image2 sequence",
401
    sizeof(VideoData),
402
    NULL, /* no probe */
403
    img_read_header,
404
    img_read_packet,
405
    img_read_close,
406
    NULL,
407
};
408 ff70e601 Måns Rullgård
#endif
409 03cfe134 Michael Niedermayer
410
/* output */
411 ff70e601 Måns Rullgård
#ifdef CONFIG_IMAGE2_MUXER
412
AVOutputFormat image2_muxer = {
413 03cfe134 Michael Niedermayer
    "image2",
414
    "image2 sequence",
415
    "",
416
    "",
417
    sizeof(VideoData),
418
    CODEC_ID_NONE,
419
    CODEC_ID_MJPEG,
420
    img_write_header,
421
    img_write_packet,
422
    img_write_trailer,
423 61fb3183 Michael Niedermayer
    AVFMT_NOFILE,
424 03cfe134 Michael Niedermayer
};
425 ff70e601 Måns Rullgård
#endif
426
#ifdef CONFIG_IMAGE2PIPE_MUXER
427
AVOutputFormat image2pipe_muxer = {
428 03cfe134 Michael Niedermayer
    "image2pipe",
429
    "piped image2 sequence",
430
    "",
431
    "",
432
    sizeof(VideoData),
433
    CODEC_ID_NONE,
434
    CODEC_ID_MJPEG,
435
    img_write_header,
436
    img_write_packet,
437
    img_write_trailer,
438
};
439 8228bff5 Diego Biurrun
#endif