changing AVCodecContext codec -> *codec in AVStream so additions to AVCodecContext...
[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 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
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20 #include "avformat.h"
21
22 /* XXX: this is a hack */
23 extern int loop_input;
24
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 { CODEC_ID_PNG , "png"},
44 { 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 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
50 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
51 { CODEC_ID_MPEG4 , "mpg4-img"},
52 { CODEC_ID_FFV1 , "ffv1-img"},
53 { CODEC_ID_RAWVIDEO , "y"},
54 {0, NULL}
55 };
56
57 static int sizes[][2] = {
58 { 640, 480 },
59 { 720, 480 },
60 { 720, 576 },
61 { 352, 288 },
62 { 352, 240 },
63 { 160, 128 },
64 { 512, 384 },
65 { 640, 352 },
66 { 640, 240 },
67 };
68
69 static int infer_size(int *width_ptr, int *height_ptr, int size)
70 {
71 int i;
72
73 for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
74 if ((sizes[i][0] * sizes[i][1]) == size) {
75 *width_ptr = sizes[i][0];
76 *height_ptr = sizes[i][1];
77 return 0;
78 }
79 }
80 return -1;
81 }
82 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
83 {
84 str= strrchr(str, '.');
85 if(!str) return CODEC_ID_NONE;
86 str++;
87
88 while (tags->id) {
89 int i;
90 for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
91 if(tags->str[i]==0 && str[i]==0)
92 return tags->id;
93 }
94
95 tags++;
96 }
97 return CODEC_ID_NONE;
98 }
99
100 /* return -1 if no image found */
101 static int find_image_range(int *pfirst_index, int *plast_index,
102 const char *path)
103 {
104 char buf[1024];
105 int range, last_index, range1, first_index;
106
107 /* find the first image */
108 for(first_index = 0; first_index < 5; first_index++) {
109 if (get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
110 *pfirst_index =
111 *plast_index = 1;
112 return 0;
113 }
114 if (url_exist(buf))
115 break;
116 }
117 if (first_index == 5)
118 goto fail;
119
120 /* find the last image */
121 last_index = first_index;
122 for(;;) {
123 range = 0;
124 for(;;) {
125 if (!range)
126 range1 = 1;
127 else
128 range1 = 2 * range;
129 if (get_frame_filename(buf, sizeof(buf), path,
130 last_index + range1) < 0)
131 goto fail;
132 if (!url_exist(buf))
133 break;
134 range = range1;
135 /* just in case... */
136 if (range >= (1 << 30))
137 goto fail;
138 }
139 /* we are sure than image last_index + range exists */
140 if (!range)
141 break;
142 last_index += range;
143 }
144 *pfirst_index = first_index;
145 *plast_index = last_index;
146 return 0;
147 fail:
148 return -1;
149 }
150
151
152 static int image_probe(AVProbeData *p)
153 {
154 if (filename_number_test(p->filename) >= 0 && av_str2id(img_tags, p->filename))
155 return AVPROBE_SCORE_MAX;
156 else
157 return 0;
158 }
159
160 enum CodecID av_guess_image2_codec(const char *filename){
161 return av_str2id(img_tags, filename);
162 }
163
164 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
165 {
166 VideoData *s = s1->priv_data;
167 int first_index, last_index;
168 AVStream *st;
169
170 s1->ctx_flags |= AVFMTCTX_NOHEADER;
171
172 st = av_new_stream(s1, 0);
173 if (!st) {
174 return -ENOMEM;
175 }
176
177 pstrcpy(s->path, sizeof(s->path), s1->filename);
178 s->img_number = 0;
179 s->img_count = 0;
180
181 /* find format */
182 if (s1->iformat->flags & AVFMT_NOFILE)
183 s->is_pipe = 0;
184 else{
185 s->is_pipe = 1;
186 st->need_parsing= 1;
187 }
188
189 if (!ap || !ap->time_base.num) {
190 av_set_pts_info(st, 60, 1, 25);
191 } else {
192 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
193 }
194
195 if(ap && ap->width && ap->height){
196 st->codec->width = ap->width;
197 st->codec->height= ap->height;
198 }
199
200 if (!s->is_pipe) {
201 if (find_image_range(&first_index, &last_index, s->path) < 0)
202 return AVERROR_IO;
203 s->img_first = first_index;
204 s->img_last = last_index;
205 s->img_number = first_index;
206 /* compute duration */
207 st->start_time = 0;
208 st->duration = last_index - first_index + 1;
209 }
210
211 if(ap->video_codec_id){
212 st->codec->codec_type = CODEC_TYPE_VIDEO;
213 st->codec->codec_id = ap->video_codec_id;
214 }else if(ap->audio_codec_id){
215 st->codec->codec_type = CODEC_TYPE_AUDIO;
216 st->codec->codec_id = ap->audio_codec_id;
217 }else{
218 st->codec->codec_type = CODEC_TYPE_VIDEO;
219 st->codec->codec_id = av_str2id(img_tags, s->path);
220 }
221 if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
222 st->codec->pix_fmt = ap->pix_fmt;
223
224 return 0;
225 }
226
227 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
228 {
229 VideoData *s = s1->priv_data;
230 char filename[1024];
231 int i;
232 int size[3]={0}, ret[3]={0};
233 ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
234 AVCodecContext *codec= s1->streams[0]->codec;
235
236 if (!s->is_pipe) {
237 /* loop over input */
238 if (loop_input && s->img_number > s->img_last) {
239 s->img_number = s->img_first;
240 }
241 if (get_frame_filename(filename, sizeof(filename),
242 s->path, s->img_number)<0 && s->img_number > 1)
243 return AVERROR_IO;
244 for(i=0; i<3; i++){
245 if (url_fopen(f[i], filename, URL_RDONLY) < 0)
246 return AVERROR_IO;
247 size[i]= url_fsize(f[i]);
248
249 if(codec->codec_id != CODEC_ID_RAWVIDEO)
250 break;
251 filename[ strlen(filename) - 1 ]= 'U' + i;
252 }
253
254 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
255 infer_size(&codec->width, &codec->height, size[0]);
256 } else {
257 f[0] = &s1->pb;
258 if (url_feof(f[0]))
259 return AVERROR_IO;
260 size[0]= 4096;
261 }
262
263 av_new_packet(pkt, size[0] + size[1] + size[2]);
264 pkt->stream_index = 0;
265 pkt->flags |= PKT_FLAG_KEY;
266
267 pkt->size= 0;
268 for(i=0; i<3; i++){
269 if(size[i]){
270 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
271 if (!s->is_pipe)
272 url_fclose(f[i]);
273 if(ret[i]>0)
274 pkt->size += ret[i];
275 }
276 }
277
278 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
279 av_free_packet(pkt);
280 return AVERROR_IO; /* signal EOF */
281 } else {
282 s->img_count++;
283 s->img_number++;
284 return 0;
285 }
286 }
287
288 static int img_read_close(AVFormatContext *s1)
289 {
290 return 0;
291 }
292
293 /******************************************************/
294 /* image output */
295
296 static int img_write_header(AVFormatContext *s)
297 {
298 VideoData *img = s->priv_data;
299
300 img->img_number = 1;
301 pstrcpy(img->path, sizeof(img->path), s->filename);
302
303 /* find format */
304 if (s->oformat->flags & AVFMT_NOFILE)
305 img->is_pipe = 0;
306 else
307 img->is_pipe = 1;
308
309 return 0;
310 }
311
312 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
313 {
314 VideoData *img = s->priv_data;
315 ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
316 char filename[1024];
317 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
318 int i;
319
320 if (!img->is_pipe) {
321 if (get_frame_filename(filename, sizeof(filename),
322 img->path, img->img_number) < 0 && img->img_number>1)
323 return AVERROR_IO;
324 for(i=0; i<3; i++){
325 if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
326 return AVERROR_IO;
327
328 if(codec->codec_id != CODEC_ID_RAWVIDEO)
329 break;
330 filename[ strlen(filename) - 1 ]= 'U' + i;
331 }
332 } else {
333 pb[0] = &s->pb;
334 }
335
336 if(codec->codec_id == CODEC_ID_RAWVIDEO){
337 int ysize = codec->width * codec->height;
338 put_buffer(pb[0], pkt->data , ysize);
339 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
340 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
341 put_flush_packet(pb[1]);
342 put_flush_packet(pb[2]);
343 url_fclose(pb[1]);
344 url_fclose(pb[2]);
345 }else{
346 put_buffer(pb[0], pkt->data, pkt->size);
347 }
348 put_flush_packet(pb[0]);
349 if (!img->is_pipe) {
350 url_fclose(pb[0]);
351 }
352
353 img->img_number++;
354 return 0;
355 }
356
357 static int img_write_trailer(AVFormatContext *s)
358 {
359 return 0;
360 }
361
362 /* input */
363
364 static AVInputFormat image2_iformat = {
365 "image2",
366 "image2 sequence",
367 sizeof(VideoData),
368 image_probe,
369 img_read_header,
370 img_read_packet,
371 img_read_close,
372 NULL,
373 NULL,
374 AVFMT_NOFILE,
375 };
376
377 static AVInputFormat image2pipe_iformat = {
378 "image2pipe",
379 "piped image2 sequence",
380 sizeof(VideoData),
381 NULL, /* no probe */
382 img_read_header,
383 img_read_packet,
384 img_read_close,
385 NULL,
386 };
387
388
389 /* output */
390
391 static AVOutputFormat image2_oformat = {
392 "image2",
393 "image2 sequence",
394 "",
395 "",
396 sizeof(VideoData),
397 CODEC_ID_NONE,
398 CODEC_ID_MJPEG,
399 img_write_header,
400 img_write_packet,
401 img_write_trailer,
402 AVFMT_NOFILE,
403 };
404
405 static AVOutputFormat image2pipe_oformat = {
406 "image2pipe",
407 "piped image2 sequence",
408 "",
409 "",
410 sizeof(VideoData),
411 CODEC_ID_NONE,
412 CODEC_ID_MJPEG,
413 img_write_header,
414 img_write_packet,
415 img_write_trailer,
416 };
417
418 int img2_init(void)
419 {
420 av_register_input_format(&image2_iformat);
421 av_register_output_format(&image2_oformat);
422
423 av_register_input_format(&image2pipe_iformat);
424 av_register_output_format(&image2pipe_oformat);
425
426 return 0;
427 }