img2: add loop private option.
[libav.git] / libavformat / img2.c
1 /*
2 * Image format
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2004 Michael Niedermayer
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * 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 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/avstring.h"
25 #include "libavutil/log.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/pixdesc.h"
28 #include "libavutil/parseutils.h"
29 #include "avformat.h"
30 #include "avio_internal.h"
31 #include "internal.h"
32 #include <strings.h>
33
34 typedef struct {
35 const AVClass *class; /**< Class for private options. */
36 int img_first;
37 int img_last;
38 int img_number;
39 int img_count;
40 int is_pipe;
41 char path[1024];
42 char *pixel_format; /**< Set by a private option. */
43 char *video_size; /**< Set by a private option. */
44 char *framerate; /**< Set by a private option. */
45 int loop;
46 } VideoData;
47
48 typedef struct {
49 enum CodecID id;
50 const char *str;
51 } IdStrMap;
52
53 static const IdStrMap img_tags[] = {
54 { CODEC_ID_MJPEG , "jpeg"},
55 { CODEC_ID_MJPEG , "jpg"},
56 { CODEC_ID_LJPEG , "ljpg"},
57 { CODEC_ID_PNG , "png"},
58 { CODEC_ID_PNG , "mng"},
59 { CODEC_ID_PPM , "ppm"},
60 { CODEC_ID_PPM , "pnm"},
61 { CODEC_ID_PGM , "pgm"},
62 { CODEC_ID_PGMYUV , "pgmyuv"},
63 { CODEC_ID_PBM , "pbm"},
64 { CODEC_ID_PAM , "pam"},
65 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
66 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
67 { CODEC_ID_MPEG4 , "mpg4-img"},
68 { CODEC_ID_FFV1 , "ffv1-img"},
69 { CODEC_ID_RAWVIDEO , "y"},
70 { CODEC_ID_BMP , "bmp"},
71 { CODEC_ID_GIF , "gif"},
72 { CODEC_ID_TARGA , "tga"},
73 { CODEC_ID_TIFF , "tiff"},
74 { CODEC_ID_TIFF , "tif"},
75 { CODEC_ID_SGI , "sgi"},
76 { CODEC_ID_PTX , "ptx"},
77 { CODEC_ID_PCX , "pcx"},
78 { CODEC_ID_SUNRAST , "sun"},
79 { CODEC_ID_SUNRAST , "ras"},
80 { CODEC_ID_SUNRAST , "rs"},
81 { CODEC_ID_SUNRAST , "im1"},
82 { CODEC_ID_SUNRAST , "im8"},
83 { CODEC_ID_SUNRAST , "im24"},
84 { CODEC_ID_SUNRAST , "sunras"},
85 { CODEC_ID_JPEG2000 , "jp2"},
86 { CODEC_ID_JPEG2000 , "jpc"},
87 { CODEC_ID_DPX , "dpx"},
88 { CODEC_ID_PICTOR , "pic"},
89 { CODEC_ID_NONE , NULL}
90 };
91
92 static const int sizes[][2] = {
93 { 640, 480 },
94 { 720, 480 },
95 { 720, 576 },
96 { 352, 288 },
97 { 352, 240 },
98 { 160, 128 },
99 { 512, 384 },
100 { 640, 352 },
101 { 640, 240 },
102 };
103
104 static int infer_size(int *width_ptr, int *height_ptr, int size)
105 {
106 int i;
107
108 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) {
109 if ((sizes[i][0] * sizes[i][1]) == size) {
110 *width_ptr = sizes[i][0];
111 *height_ptr = sizes[i][1];
112 return 0;
113 }
114 }
115 return -1;
116 }
117 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
118 {
119 str= strrchr(str, '.');
120 if(!str) return CODEC_ID_NONE;
121 str++;
122
123 while (tags->id) {
124 if (!strcasecmp(str, tags->str))
125 return tags->id;
126
127 tags++;
128 }
129 return CODEC_ID_NONE;
130 }
131
132 /* return -1 if no image found */
133 static int find_image_range(int *pfirst_index, int *plast_index,
134 const char *path)
135 {
136 char buf[1024];
137 int range, last_index, range1, first_index;
138
139 /* find the first image */
140 for(first_index = 0; first_index < 5; first_index++) {
141 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
142 *pfirst_index =
143 *plast_index = 1;
144 if (avio_check(buf, AVIO_FLAG_READ) > 0)
145 return 0;
146 return -1;
147 }
148 if (avio_check(buf, AVIO_FLAG_READ) > 0)
149 break;
150 }
151 if (first_index == 5)
152 goto fail;
153
154 /* find the last image */
155 last_index = first_index;
156 for(;;) {
157 range = 0;
158 for(;;) {
159 if (!range)
160 range1 = 1;
161 else
162 range1 = 2 * range;
163 if (av_get_frame_filename(buf, sizeof(buf), path,
164 last_index + range1) < 0)
165 goto fail;
166 if (avio_check(buf, AVIO_FLAG_READ) <= 0)
167 break;
168 range = range1;
169 /* just in case... */
170 if (range >= (1 << 30))
171 goto fail;
172 }
173 /* we are sure than image last_index + range exists */
174 if (!range)
175 break;
176 last_index += range;
177 }
178 *pfirst_index = first_index;
179 *plast_index = last_index;
180 return 0;
181 fail:
182 return -1;
183 }
184
185
186 static int read_probe(AVProbeData *p)
187 {
188 if (p->filename && av_str2id(img_tags, p->filename)) {
189 if (av_filename_number_test(p->filename))
190 return AVPROBE_SCORE_MAX;
191 else
192 return AVPROBE_SCORE_MAX/2;
193 }
194 return 0;
195 }
196
197 enum CodecID ff_guess_image2_codec(const char *filename)
198 {
199 return av_str2id(img_tags, filename);
200 }
201
202 #if FF_API_GUESS_IMG2_CODEC
203 enum CodecID av_guess_image2_codec(const char *filename){
204 return av_str2id(img_tags, filename);
205 }
206 #endif
207
208 static int read_header(AVFormatContext *s1, AVFormatParameters *ap)
209 {
210 VideoData *s = s1->priv_data;
211 int first_index, last_index, ret = 0;
212 int width = 0, height = 0;
213 AVStream *st;
214 enum PixelFormat pix_fmt = PIX_FMT_NONE;
215 AVRational framerate;
216
217 s1->ctx_flags |= AVFMTCTX_NOHEADER;
218
219 st = av_new_stream(s1, 0);
220 if (!st) {
221 return AVERROR(ENOMEM);
222 }
223
224 if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) {
225 av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format);
226 return AVERROR(EINVAL);
227 }
228 if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
229 av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size);
230 return ret;
231 }
232 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
233 av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate);
234 return ret;
235 }
236 #if FF_API_FORMAT_PARAMETERS
237 if (ap->pix_fmt != PIX_FMT_NONE)
238 pix_fmt = ap->pix_fmt;
239 if (ap->width > 0)
240 width = ap->width;
241 if (ap->height > 0)
242 height = ap->height;
243 if (ap->time_base.num)
244 framerate = (AVRational){ap->time_base.den, ap->time_base.num};
245 #endif
246
247 #if FF_API_LOOP_INPUT
248 if (s1->loop_input)
249 s->loop = s1->loop_input;
250 #endif
251
252 av_strlcpy(s->path, s1->filename, sizeof(s->path));
253 s->img_number = 0;
254 s->img_count = 0;
255
256 /* find format */
257 if (s1->iformat->flags & AVFMT_NOFILE)
258 s->is_pipe = 0;
259 else{
260 s->is_pipe = 1;
261 st->need_parsing = AVSTREAM_PARSE_FULL;
262 }
263
264 av_set_pts_info(st, 60, framerate.den, framerate.num);
265
266 if (width && height) {
267 st->codec->width = width;
268 st->codec->height = height;
269 }
270
271 if (!s->is_pipe) {
272 if (find_image_range(&first_index, &last_index, s->path) < 0)
273 return AVERROR(ENOENT);
274 s->img_first = first_index;
275 s->img_last = last_index;
276 s->img_number = first_index;
277 /* compute duration */
278 st->start_time = 0;
279 st->duration = last_index - first_index + 1;
280 }
281
282 if(s1->video_codec_id){
283 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
284 st->codec->codec_id = s1->video_codec_id;
285 }else if(s1->audio_codec_id){
286 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
287 st->codec->codec_id = s1->audio_codec_id;
288 }else{
289 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
290 st->codec->codec_id = av_str2id(img_tags, s->path);
291 }
292 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
293 st->codec->pix_fmt = pix_fmt;
294
295 return 0;
296 }
297
298 static int read_packet(AVFormatContext *s1, AVPacket *pkt)
299 {
300 VideoData *s = s1->priv_data;
301 char filename[1024];
302 int i;
303 int size[3]={0}, ret[3]={0};
304 AVIOContext *f[3];
305 AVCodecContext *codec= s1->streams[0]->codec;
306
307 if (!s->is_pipe) {
308 /* loop over input */
309 if (s->loop && s->img_number > s->img_last) {
310 s->img_number = s->img_first;
311 }
312 if (s->img_number > s->img_last)
313 return AVERROR_EOF;
314 if (av_get_frame_filename(filename, sizeof(filename),
315 s->path, s->img_number)<0 && s->img_number > 1)
316 return AVERROR(EIO);
317 for(i=0; i<3; i++){
318 if (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
319 if(i==1)
320 break;
321 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
322 return AVERROR(EIO);
323 }
324 size[i]= avio_size(f[i]);
325
326 if(codec->codec_id != CODEC_ID_RAWVIDEO)
327 break;
328 filename[ strlen(filename) - 1 ]= 'U' + i;
329 }
330
331 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
332 infer_size(&codec->width, &codec->height, size[0]);
333 } else {
334 f[0] = s1->pb;
335 if (f[0]->eof_reached)
336 return AVERROR(EIO);
337 size[0]= 4096;
338 }
339
340 av_new_packet(pkt, size[0] + size[1] + size[2]);
341 pkt->stream_index = 0;
342 pkt->flags |= AV_PKT_FLAG_KEY;
343
344 pkt->size= 0;
345 for(i=0; i<3; i++){
346 if(size[i]){
347 ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
348 if (!s->is_pipe)
349 avio_close(f[i]);
350 if(ret[i]>0)
351 pkt->size += ret[i];
352 }
353 }
354
355 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
356 av_free_packet(pkt);
357 return AVERROR(EIO); /* signal EOF */
358 } else {
359 s->img_count++;
360 s->img_number++;
361 return 0;
362 }
363 }
364
365 #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER
366 /******************************************************/
367 /* image output */
368
369 static int write_header(AVFormatContext *s)
370 {
371 VideoData *img = s->priv_data;
372
373 img->img_number = 1;
374 av_strlcpy(img->path, s->filename, sizeof(img->path));
375
376 /* find format */
377 if (s->oformat->flags & AVFMT_NOFILE)
378 img->is_pipe = 0;
379 else
380 img->is_pipe = 1;
381
382 return 0;
383 }
384
385 static int write_packet(AVFormatContext *s, AVPacket *pkt)
386 {
387 VideoData *img = s->priv_data;
388 AVIOContext *pb[3];
389 char filename[1024];
390 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
391 int i;
392
393 if (!img->is_pipe) {
394 if (av_get_frame_filename(filename, sizeof(filename),
395 img->path, img->img_number) < 0 && img->img_number>1) {
396 av_log(s, AV_LOG_ERROR,
397 "Could not get frame filename number %d from pattern '%s'\n",
398 img->img_number, img->path);
399 return AVERROR(EIO);
400 }
401 for(i=0; i<3; i++){
402 if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
403 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
404 return AVERROR(EIO);
405 }
406
407 if(codec->codec_id != CODEC_ID_RAWVIDEO)
408 break;
409 filename[ strlen(filename) - 1 ]= 'U' + i;
410 }
411 } else {
412 pb[0] = s->pb;
413 }
414
415 if(codec->codec_id == CODEC_ID_RAWVIDEO){
416 int ysize = codec->width * codec->height;
417 avio_write(pb[0], pkt->data , ysize);
418 avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
419 avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
420 avio_flush(pb[1]);
421 avio_flush(pb[2]);
422 avio_close(pb[1]);
423 avio_close(pb[2]);
424 }else{
425 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
426 AVStream *st = s->streams[0];
427 if(st->codec->extradata_size > 8 &&
428 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){
429 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c'))
430 goto error;
431 avio_wb32(pb[0], 12);
432 ffio_wfourcc(pb[0], "jP ");
433 avio_wb32(pb[0], 0x0D0A870A); // signature
434 avio_wb32(pb[0], 20);
435 ffio_wfourcc(pb[0], "ftyp");
436 ffio_wfourcc(pb[0], "jp2 ");
437 avio_wb32(pb[0], 0);
438 ffio_wfourcc(pb[0], "jp2 ");
439 avio_write(pb[0], st->codec->extradata, st->codec->extradata_size);
440 }else if(pkt->size < 8 ||
441 (!st->codec->extradata_size &&
442 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
443 error:
444 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n");
445 return -1;
446 }
447 }
448 avio_write(pb[0], pkt->data, pkt->size);
449 }
450 avio_flush(pb[0]);
451 if (!img->is_pipe) {
452 avio_close(pb[0]);
453 }
454
455 img->img_number++;
456 return 0;
457 }
458
459 #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
460
461 #define OFFSET(x) offsetof(VideoData, x)
462 #define DEC AV_OPT_FLAG_DECODING_PARAM
463 static const AVOption options[] = {
464 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
465 { "video_size", "", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
466 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC },
467 { "loop", "", OFFSET(loop), FF_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC },
468 { NULL },
469 };
470
471 static const AVClass img2_class = {
472 .class_name = "image2 demuxer",
473 .item_name = av_default_item_name,
474 .option = options,
475 .version = LIBAVUTIL_VERSION_INT,
476 };
477
478 /* input */
479 #if CONFIG_IMAGE2_DEMUXER
480 AVInputFormat ff_image2_demuxer = {
481 .name = "image2",
482 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
483 .priv_data_size = sizeof(VideoData),
484 .read_probe = read_probe,
485 .read_header = read_header,
486 .read_packet = read_packet,
487 .flags = AVFMT_NOFILE,
488 .priv_class = &img2_class,
489 };
490 #endif
491 #if CONFIG_IMAGE2PIPE_DEMUXER
492 AVInputFormat ff_image2pipe_demuxer = {
493 .name = "image2pipe",
494 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
495 .priv_data_size = sizeof(VideoData),
496 .read_header = read_header,
497 .read_packet = read_packet,
498 .priv_class = &img2_class,
499 };
500 #endif
501
502 /* output */
503 #if CONFIG_IMAGE2_MUXER
504 AVOutputFormat ff_image2_muxer = {
505 .name = "image2",
506 .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
507 .extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
508 "ppm,sgi,tga,tif,tiff,jp2",
509 .priv_data_size = sizeof(VideoData),
510 .video_codec = CODEC_ID_MJPEG,
511 .write_header = write_header,
512 .write_packet = write_packet,
513 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
514 };
515 #endif
516 #if CONFIG_IMAGE2PIPE_MUXER
517 AVOutputFormat ff_image2pipe_muxer = {
518 .name = "image2pipe",
519 .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
520 .priv_data_size = sizeof(VideoData),
521 .video_codec = CODEC_ID_MJPEG,
522 .write_header = write_header,
523 .write_packet = write_packet,
524 .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
525 };
526 #endif