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ffmpeg / libavformat / img2.c @ 3840147e

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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
 * This library is free software; you can redistribute it and/or
7
 * modify it under the terms of the GNU Lesser General Public
8
 * License as published by the Free Software Foundation; either
9
 * version 2 of the License, or (at your option) any later version.
10
 *
11
 * This library is distributed in the hope that it will be useful,
12
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
 * Lesser General Public License for more details.
15
 *
16
 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
18 5509bffa Diego Biurrun
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 03cfe134 Michael Niedermayer
 */
20
#include "avformat.h"
21
22 b339fb00 Michael Niedermayer
/* XXX: this is a hack */
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extern int loop_input;
24
25 03cfe134 Michael Niedermayer
typedef struct {
26
    int img_first;
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    int img_last;
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    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;
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    const char *str;
37
} IdStrMap;
38
39
static const IdStrMap img_tags[] = {
40
    { CODEC_ID_MJPEG     , "jpeg"},
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    { CODEC_ID_MJPEG     , "jpg"},
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    { CODEC_ID_LJPEG     , "ljpg"},
43 4eff7cf4 Michael Niedermayer
    { CODEC_ID_PNG       , "png"},
44 5b6d5596 Michael Niedermayer
    { CODEC_ID_PPM       , "ppm"},
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    { CODEC_ID_PGM       , "pgm"},
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    { CODEC_ID_PGMYUV    , "pgmyuv"},
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    { CODEC_ID_PBM       , "pbm"},
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    { CODEC_ID_PAM       , "pam"},
49 03cfe134 Michael Niedermayer
    { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
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    { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
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    { CODEC_ID_MPEG4     , "mpg4-img"},
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    { CODEC_ID_FFV1      , "ffv1-img"},
53 55cf1959 Michael Niedermayer
    { CODEC_ID_RAWVIDEO  , "y"},
54 9fa62f2a Måns Rullgård
    { CODEC_ID_BMP       , "bmp"},
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    {0, NULL}
56
};
57
58 55cf1959 Michael Niedermayer
static int sizes[][2] = {
59
    { 640, 480 },
60
    { 720, 480 },
61
    { 720, 576 },
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    { 352, 288 },
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    { 352, 240 },
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    { 160, 128 },
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    { 512, 384 },
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    { 640, 352 },
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    { 640, 240 },
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};
69
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static int infer_size(int *width_ptr, int *height_ptr, int size)
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{
72
    int i;
73
74
    for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
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        if ((sizes[i][0] * sizes[i][1]) == size) {
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            *width_ptr = sizes[i][0];
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            *height_ptr = sizes[i][1];
78
            return 0;
79
        }
80
    }
81
    return -1;
82
}
83 03cfe134 Michael Niedermayer
static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
84
{
85 3ed02129 Michael Niedermayer
    str= strrchr(str, '.');
86
    if(!str) return CODEC_ID_NONE;
87
    str++;
88 03cfe134 Michael Niedermayer
89
    while (tags->id) {
90
        int i;
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        for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
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            if(tags->str[i]==0 && str[i]==0)
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                return tags->id;
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        }
95
96
        tags++;
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    }
98
    return CODEC_ID_NONE;
99
}
100
101
/* return -1 if no image found */
102 115329f1 Diego Biurrun
static int find_image_range(int *pfirst_index, int *plast_index,
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                            const char *path)
104
{
105
    char buf[1024];
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    int range, last_index, range1, first_index;
107
108
    /* find the first image */
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    for(first_index = 0; first_index < 5; first_index++) {
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        if (get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
111 115329f1 Diego Biurrun
            *pfirst_index =
112 61fb3183 Michael Niedermayer
            *plast_index = 1;
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            return 0;
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        }
115 03cfe134 Michael Niedermayer
        if (url_exist(buf))
116
            break;
117
    }
118
    if (first_index == 5)
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        goto fail;
120 115329f1 Diego Biurrun
121 03cfe134 Michael Niedermayer
    /* find the last image */
122
    last_index = first_index;
123
    for(;;) {
124
        range = 0;
125
        for(;;) {
126
            if (!range)
127
                range1 = 1;
128
            else
129
                range1 = 2 * range;
130 115329f1 Diego Biurrun
            if (get_frame_filename(buf, sizeof(buf), path,
131 03cfe134 Michael Niedermayer
                                   last_index + range1) < 0)
132
                goto fail;
133
            if (!url_exist(buf))
134
                break;
135
            range = range1;
136
            /* just in case... */
137
            if (range >= (1 << 30))
138
                goto fail;
139
        }
140
        /* we are sure than image last_index + range exists */
141
        if (!range)
142
            break;
143
        last_index += range;
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    }
145
    *pfirst_index = first_index;
146
    *plast_index = last_index;
147
    return 0;
148
 fail:
149
    return -1;
150
}
151
152
153
static int image_probe(AVProbeData *p)
154
{
155
    if (filename_number_test(p->filename) >= 0 && av_str2id(img_tags, p->filename))
156
        return AVPROBE_SCORE_MAX;
157
    else
158
        return 0;
159
}
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161 5b6d5596 Michael Niedermayer
enum CodecID av_guess_image2_codec(const char *filename){
162
    return av_str2id(img_tags, filename);
163
}
164
165 03cfe134 Michael Niedermayer
static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
166
{
167
    VideoData *s = s1->priv_data;
168
    int first_index, last_index;
169
    AVStream *st;
170
171
    s1->ctx_flags |= AVFMTCTX_NOHEADER;
172
173
    st = av_new_stream(s1, 0);
174
    if (!st) {
175
        return -ENOMEM;
176
    }
177
178 568e18b1 Michael Niedermayer
    pstrcpy(s->path, sizeof(s->path), s1->filename);
179 03cfe134 Michael Niedermayer
    s->img_number = 0;
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    s->img_count = 0;
181 115329f1 Diego Biurrun
182 03cfe134 Michael Niedermayer
    /* find format */
183
    if (s1->iformat->flags & AVFMT_NOFILE)
184
        s->is_pipe = 0;
185 146210ca Michael Niedermayer
    else{
186 03cfe134 Michael Niedermayer
        s->is_pipe = 1;
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        st->need_parsing= 1;
188
    }
189 115329f1 Diego Biurrun
190 c0df9d75 Michael Niedermayer
    if (!ap || !ap->time_base.num) {
191
        av_set_pts_info(st, 60, 1, 25);
192 03cfe134 Michael Niedermayer
    } else {
193 c0df9d75 Michael Niedermayer
        av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
194 03cfe134 Michael Niedermayer
    }
195 115329f1 Diego Biurrun
196 55cf1959 Michael Niedermayer
    if(ap && ap->width && ap->height){
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        st->codec->width = ap->width;
198
        st->codec->height= ap->height;
199 55cf1959 Michael Niedermayer
    }
200 115329f1 Diego Biurrun
201 03cfe134 Michael Niedermayer
    if (!s->is_pipe) {
202
        if (find_image_range(&first_index, &last_index, s->path) < 0)
203 ae895a40 Michael Niedermayer
            return AVERROR_IO;
204 03cfe134 Michael Niedermayer
        s->img_first = first_index;
205
        s->img_last = last_index;
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        s->img_number = first_index;
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        /* compute duration */
208
        st->start_time = 0;
209 c0df9d75 Michael Niedermayer
        st->duration = last_index - first_index + 1;
210 03cfe134 Michael Niedermayer
    }
211 115329f1 Diego Biurrun
212 5b6d5596 Michael Niedermayer
    if(ap->video_codec_id){
213 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_VIDEO;
214
        st->codec->codec_id = ap->video_codec_id;
215 5b6d5596 Michael Niedermayer
    }else if(ap->audio_codec_id){
216 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_AUDIO;
217
        st->codec->codec_id = ap->audio_codec_id;
218 5b6d5596 Michael Niedermayer
    }else{
219 01f4895c Michael Niedermayer
        st->codec->codec_type = CODEC_TYPE_VIDEO;
220
        st->codec->codec_id = av_str2id(img_tags, s->path);
221 5b6d5596 Michael Niedermayer
    }
222 01f4895c Michael Niedermayer
    if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
223
        st->codec->pix_fmt = ap->pix_fmt;
224 03cfe134 Michael Niedermayer
225
    return 0;
226
}
227
228
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
229
{
230
    VideoData *s = s1->priv_data;
231
    char filename[1024];
232 55cf1959 Michael Niedermayer
    int i;
233
    int size[3]={0}, ret[3]={0};
234
    ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
235 01f4895c Michael Niedermayer
    AVCodecContext *codec= s1->streams[0]->codec;
236 03cfe134 Michael Niedermayer
237
    if (!s->is_pipe) {
238
        /* loop over input */
239 b339fb00 Michael Niedermayer
        if (loop_input && s->img_number > s->img_last) {
240 03cfe134 Michael Niedermayer
            s->img_number = s->img_first;
241 b339fb00 Michael Niedermayer
        }
242 03cfe134 Michael Niedermayer
        if (get_frame_filename(filename, sizeof(filename),
243 61fb3183 Michael Niedermayer
                               s->path, s->img_number)<0 && s->img_number > 1)
244 03cfe134 Michael Niedermayer
            return AVERROR_IO;
245 55cf1959 Michael Niedermayer
        for(i=0; i<3; i++){
246
            if (url_fopen(f[i], filename, URL_RDONLY) < 0)
247
                return AVERROR_IO;
248 a965c478 Aurelien Jacobs
            size[i]= url_fsize(f[i]);
249 115329f1 Diego Biurrun
250 55cf1959 Michael Niedermayer
            if(codec->codec_id != CODEC_ID_RAWVIDEO)
251
                break;
252
            filename[ strlen(filename) - 1 ]= 'U' + i;
253
        }
254 115329f1 Diego Biurrun
255 55cf1959 Michael Niedermayer
        if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
256
            infer_size(&codec->width, &codec->height, size[0]);
257 03cfe134 Michael Niedermayer
    } else {
258 55cf1959 Michael Niedermayer
        f[0] = &s1->pb;
259
        if (url_feof(f[0]))
260 03cfe134 Michael Niedermayer
            return AVERROR_IO;
261 55cf1959 Michael Niedermayer
        size[0]= 4096;
262 03cfe134 Michael Niedermayer
    }
263
264 55cf1959 Michael Niedermayer
    av_new_packet(pkt, size[0] + size[1] + size[2]);
265 03cfe134 Michael Niedermayer
    pkt->stream_index = 0;
266
    pkt->flags |= PKT_FLAG_KEY;
267
268 55cf1959 Michael Niedermayer
    pkt->size= 0;
269
    for(i=0; i<3; i++){
270
        if(size[i]){
271
            ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
272
            if (!s->is_pipe)
273
                url_fclose(f[i]);
274
            if(ret[i]>0)
275
                pkt->size += ret[i];
276
        }
277 03cfe134 Michael Niedermayer
    }
278
279 55cf1959 Michael Niedermayer
    if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
280 03cfe134 Michael Niedermayer
        av_free_packet(pkt);
281
        return AVERROR_IO; /* signal EOF */
282
    } else {
283
        s->img_count++;
284
        s->img_number++;
285
        return 0;
286
    }
287
}
288
289
static int img_read_close(AVFormatContext *s1)
290
{
291
    return 0;
292
}
293
294 8228bff5 Diego Biurrun
#ifdef CONFIG_MUXERS
295 03cfe134 Michael Niedermayer
/******************************************************/
296
/* image output */
297
298
static int img_write_header(AVFormatContext *s)
299
{
300
    VideoData *img = s->priv_data;
301
302
    img->img_number = 1;
303 568e18b1 Michael Niedermayer
    pstrcpy(img->path, sizeof(img->path), s->filename);
304 03cfe134 Michael Niedermayer
305
    /* find format */
306
    if (s->oformat->flags & AVFMT_NOFILE)
307
        img->is_pipe = 0;
308
    else
309
        img->is_pipe = 1;
310 115329f1 Diego Biurrun
311 03cfe134 Michael Niedermayer
    return 0;
312
}
313
314
static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
315
{
316
    VideoData *img = s->priv_data;
317 55cf1959 Michael Niedermayer
    ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
318 03cfe134 Michael Niedermayer
    char filename[1024];
319 01f4895c Michael Niedermayer
    AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
320 55cf1959 Michael Niedermayer
    int i;
321 03cfe134 Michael Niedermayer
322
    if (!img->is_pipe) {
323 115329f1 Diego Biurrun
        if (get_frame_filename(filename, sizeof(filename),
324 61fb3183 Michael Niedermayer
                               img->path, img->img_number) < 0 && img->img_number>1)
325 03cfe134 Michael Niedermayer
            return AVERROR_IO;
326 55cf1959 Michael Niedermayer
        for(i=0; i<3; i++){
327
            if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
328
                return AVERROR_IO;
329 115329f1 Diego Biurrun
330 55cf1959 Michael Niedermayer
            if(codec->codec_id != CODEC_ID_RAWVIDEO)
331
                break;
332
            filename[ strlen(filename) - 1 ]= 'U' + i;
333
        }
334 03cfe134 Michael Niedermayer
    } else {
335 55cf1959 Michael Niedermayer
        pb[0] = &s->pb;
336 03cfe134 Michael Niedermayer
    }
337 115329f1 Diego Biurrun
338 55cf1959 Michael Niedermayer
    if(codec->codec_id == CODEC_ID_RAWVIDEO){
339 2c34596f Michael Niedermayer
        int ysize = codec->width * codec->height;
340
        put_buffer(pb[0], pkt->data        , ysize);
341
        put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
342
        put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
343 55cf1959 Michael Niedermayer
        put_flush_packet(pb[1]);
344
        put_flush_packet(pb[2]);
345
        url_fclose(pb[1]);
346
        url_fclose(pb[2]);
347
    }else{
348
        put_buffer(pb[0], pkt->data, pkt->size);
349
    }
350
    put_flush_packet(pb[0]);
351 03cfe134 Michael Niedermayer
    if (!img->is_pipe) {
352 55cf1959 Michael Niedermayer
        url_fclose(pb[0]);
353 03cfe134 Michael Niedermayer
    }
354
355
    img->img_number++;
356
    return 0;
357
}
358
359
static int img_write_trailer(AVFormatContext *s)
360
{
361
    return 0;
362
}
363
364 8228bff5 Diego Biurrun
#endif /* CONFIG_MUXERS */
365
366 03cfe134 Michael Niedermayer
/* input */
367
368
static AVInputFormat image2_iformat = {
369
    "image2",
370
    "image2 sequence",
371
    sizeof(VideoData),
372
    image_probe,
373
    img_read_header,
374
    img_read_packet,
375
    img_read_close,
376
    NULL,
377
    NULL,
378 61fb3183 Michael Niedermayer
    AVFMT_NOFILE,
379 03cfe134 Michael Niedermayer
};
380
381
static AVInputFormat image2pipe_iformat = {
382
    "image2pipe",
383
    "piped image2 sequence",
384
    sizeof(VideoData),
385
    NULL, /* no probe */
386
    img_read_header,
387
    img_read_packet,
388
    img_read_close,
389
    NULL,
390
};
391
392
393 8228bff5 Diego Biurrun
#ifdef CONFIG_MUXERS
394 03cfe134 Michael Niedermayer
/* output */
395
396
static AVOutputFormat image2_oformat = {
397
    "image2",
398
    "image2 sequence",
399
    "",
400
    "",
401
    sizeof(VideoData),
402
    CODEC_ID_NONE,
403
    CODEC_ID_MJPEG,
404
    img_write_header,
405
    img_write_packet,
406
    img_write_trailer,
407 61fb3183 Michael Niedermayer
    AVFMT_NOFILE,
408 03cfe134 Michael Niedermayer
};
409
410
static AVOutputFormat image2pipe_oformat = {
411
    "image2pipe",
412
    "piped image2 sequence",
413
    "",
414
    "",
415
    sizeof(VideoData),
416
    CODEC_ID_NONE,
417
    CODEC_ID_MJPEG,
418
    img_write_header,
419
    img_write_packet,
420
    img_write_trailer,
421
};
422 8228bff5 Diego Biurrun
#endif /* CONFIG_MUXERS */
423 03cfe134 Michael Niedermayer
424
int img2_init(void)
425
{
426
    av_register_input_format(&image2_iformat);
427
    av_register_input_format(&image2pipe_iformat);
428 8228bff5 Diego Biurrun
429
#ifdef CONFIG_MUXERS
430
    av_register_output_format(&image2_oformat);
431 03cfe134 Michael Niedermayer
    av_register_output_format(&image2pipe_oformat);
432 8228bff5 Diego Biurrun
#endif
433 115329f1 Diego Biurrun
434 03cfe134 Michael Niedermayer
    return 0;
435
}