This fixes error handling for BeOS, removing the need for some ifdefs.
[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 FFmpeg.
7 *
8 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22 #include "avformat.h"
23
24 typedef struct {
25 int img_first;
26 int img_last;
27 int img_number;
28 int img_count;
29 int is_pipe;
30 char path[1024];
31 } VideoData;
32
33 typedef struct {
34 enum CodecID id;
35 const char *str;
36 } IdStrMap;
37
38 static const IdStrMap img_tags[] = {
39 { CODEC_ID_MJPEG , "jpeg"},
40 { CODEC_ID_MJPEG , "jpg"},
41 { CODEC_ID_LJPEG , "ljpg"},
42 { CODEC_ID_PNG , "png"},
43 { CODEC_ID_PPM , "ppm"},
44 { CODEC_ID_PGM , "pgm"},
45 { CODEC_ID_PGMYUV , "pgmyuv"},
46 { CODEC_ID_PBM , "pbm"},
47 { CODEC_ID_PAM , "pam"},
48 { CODEC_ID_MPEG1VIDEO, "mpg1-img"},
49 { CODEC_ID_MPEG2VIDEO, "mpg2-img"},
50 { CODEC_ID_MPEG4 , "mpg4-img"},
51 { CODEC_ID_FFV1 , "ffv1-img"},
52 { CODEC_ID_RAWVIDEO , "y"},
53 { CODEC_ID_BMP , "bmp"},
54 { CODEC_ID_GIF , "gif"},
55 { CODEC_ID_TARGA , "tga"},
56 { CODEC_ID_TIFF , "tiff"},
57 {0, NULL}
58 };
59
60 static int sizes[][2] = {
61 { 640, 480 },
62 { 720, 480 },
63 { 720, 576 },
64 { 352, 288 },
65 { 352, 240 },
66 { 160, 128 },
67 { 512, 384 },
68 { 640, 352 },
69 { 640, 240 },
70 };
71
72 static int infer_size(int *width_ptr, int *height_ptr, int size)
73 {
74 int i;
75
76 for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
77 if ((sizes[i][0] * sizes[i][1]) == size) {
78 *width_ptr = sizes[i][0];
79 *height_ptr = sizes[i][1];
80 return 0;
81 }
82 }
83 return -1;
84 }
85 static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
86 {
87 str= strrchr(str, '.');
88 if(!str) return CODEC_ID_NONE;
89 str++;
90
91 while (tags->id) {
92 int i;
93 for(i=0; toupper(tags->str[i]) == toupper(str[i]); i++){
94 if(tags->str[i]==0 && str[i]==0)
95 return tags->id;
96 }
97
98 tags++;
99 }
100 return CODEC_ID_NONE;
101 }
102
103 /* return -1 if no image found */
104 static int find_image_range(int *pfirst_index, int *plast_index,
105 const char *path)
106 {
107 char buf[1024];
108 int range, last_index, range1, first_index;
109
110 /* find the first image */
111 for(first_index = 0; first_index < 5; first_index++) {
112 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){
113 *pfirst_index =
114 *plast_index = 1;
115 return 0;
116 }
117 if (url_exist(buf))
118 break;
119 }
120 if (first_index == 5)
121 goto fail;
122
123 /* find the last image */
124 last_index = first_index;
125 for(;;) {
126 range = 0;
127 for(;;) {
128 if (!range)
129 range1 = 1;
130 else
131 range1 = 2 * range;
132 if (av_get_frame_filename(buf, sizeof(buf), path,
133 last_index + range1) < 0)
134 goto fail;
135 if (!url_exist(buf))
136 break;
137 range = range1;
138 /* just in case... */
139 if (range >= (1 << 30))
140 goto fail;
141 }
142 /* we are sure than image last_index + range exists */
143 if (!range)
144 break;
145 last_index += range;
146 }
147 *pfirst_index = first_index;
148 *plast_index = last_index;
149 return 0;
150 fail:
151 return -1;
152 }
153
154
155 static int image_probe(AVProbeData *p)
156 {
157 if (p->filename && av_str2id(img_tags, p->filename)) {
158 if (av_filename_number_test(p->filename))
159 return AVPROBE_SCORE_MAX;
160 else
161 return AVPROBE_SCORE_MAX/2;
162 }
163 return 0;
164 }
165
166 enum CodecID av_guess_image2_codec(const char *filename){
167 return av_str2id(img_tags, filename);
168 }
169
170 static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
171 {
172 VideoData *s = s1->priv_data;
173 int first_index, last_index;
174 AVStream *st;
175
176 s1->ctx_flags |= AVFMTCTX_NOHEADER;
177
178 st = av_new_stream(s1, 0);
179 if (!st) {
180 return AVERROR(ENOMEM);
181 }
182
183 pstrcpy(s->path, sizeof(s->path), s1->filename);
184 s->img_number = 0;
185 s->img_count = 0;
186
187 /* find format */
188 if (s1->iformat->flags & AVFMT_NOFILE)
189 s->is_pipe = 0;
190 else{
191 s->is_pipe = 1;
192 st->need_parsing= 1;
193 }
194
195 if (!ap->time_base.num) {
196 av_set_pts_info(st, 60, 1, 25);
197 } else {
198 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den);
199 }
200
201 if(ap->width && ap->height){
202 st->codec->width = ap->width;
203 st->codec->height= ap->height;
204 }
205
206 if (!s->is_pipe) {
207 if (find_image_range(&first_index, &last_index, s->path) < 0)
208 return AVERROR_IO;
209 s->img_first = first_index;
210 s->img_last = last_index;
211 s->img_number = first_index;
212 /* compute duration */
213 st->start_time = 0;
214 st->duration = last_index - first_index + 1;
215 }
216
217 if(ap->video_codec_id){
218 st->codec->codec_type = CODEC_TYPE_VIDEO;
219 st->codec->codec_id = ap->video_codec_id;
220 }else if(ap->audio_codec_id){
221 st->codec->codec_type = CODEC_TYPE_AUDIO;
222 st->codec->codec_id = ap->audio_codec_id;
223 }else{
224 st->codec->codec_type = CODEC_TYPE_VIDEO;
225 st->codec->codec_id = av_str2id(img_tags, s->path);
226 }
227 if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
228 st->codec->pix_fmt = ap->pix_fmt;
229
230 return 0;
231 }
232
233 static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
234 {
235 VideoData *s = s1->priv_data;
236 char filename[1024];
237 int i;
238 int size[3]={0}, ret[3]={0};
239 ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
240 AVCodecContext *codec= s1->streams[0]->codec;
241
242 if (!s->is_pipe) {
243 /* loop over input */
244 if (s1->loop_input && s->img_number > s->img_last) {
245 s->img_number = s->img_first;
246 }
247 if (av_get_frame_filename(filename, sizeof(filename),
248 s->path, s->img_number)<0 && s->img_number > 1)
249 return AVERROR_IO;
250 for(i=0; i<3; i++){
251 if (url_fopen(f[i], filename, URL_RDONLY) < 0)
252 return AVERROR_IO;
253 size[i]= url_fsize(f[i]);
254
255 if(codec->codec_id != CODEC_ID_RAWVIDEO)
256 break;
257 filename[ strlen(filename) - 1 ]= 'U' + i;
258 }
259
260 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
261 infer_size(&codec->width, &codec->height, size[0]);
262 } else {
263 f[0] = &s1->pb;
264 if (url_feof(f[0]))
265 return AVERROR_IO;
266 size[0]= 4096;
267 }
268
269 av_new_packet(pkt, size[0] + size[1] + size[2]);
270 pkt->stream_index = 0;
271 pkt->flags |= PKT_FLAG_KEY;
272
273 pkt->size= 0;
274 for(i=0; i<3; i++){
275 if(size[i]){
276 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
277 if (!s->is_pipe)
278 url_fclose(f[i]);
279 if(ret[i]>0)
280 pkt->size += ret[i];
281 }
282 }
283
284 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
285 av_free_packet(pkt);
286 return AVERROR_IO; /* signal EOF */
287 } else {
288 s->img_count++;
289 s->img_number++;
290 return 0;
291 }
292 }
293
294 static int img_read_close(AVFormatContext *s1)
295 {
296 return 0;
297 }
298
299 #ifdef CONFIG_MUXERS
300 /******************************************************/
301 /* image output */
302
303 static int img_write_header(AVFormatContext *s)
304 {
305 VideoData *img = s->priv_data;
306
307 img->img_number = 1;
308 pstrcpy(img->path, sizeof(img->path), s->filename);
309
310 /* find format */
311 if (s->oformat->flags & AVFMT_NOFILE)
312 img->is_pipe = 0;
313 else
314 img->is_pipe = 1;
315
316 return 0;
317 }
318
319 static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
320 {
321 VideoData *img = s->priv_data;
322 ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
323 char filename[1024];
324 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec;
325 int i;
326
327 if (!img->is_pipe) {
328 if (av_get_frame_filename(filename, sizeof(filename),
329 img->path, img->img_number) < 0 && img->img_number>1)
330 return AVERROR_IO;
331 for(i=0; i<3; i++){
332 if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
333 return AVERROR_IO;
334
335 if(codec->codec_id != CODEC_ID_RAWVIDEO)
336 break;
337 filename[ strlen(filename) - 1 ]= 'U' + i;
338 }
339 } else {
340 pb[0] = &s->pb;
341 }
342
343 if(codec->codec_id == CODEC_ID_RAWVIDEO){
344 int ysize = codec->width * codec->height;
345 put_buffer(pb[0], pkt->data , ysize);
346 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
347 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
348 put_flush_packet(pb[1]);
349 put_flush_packet(pb[2]);
350 url_fclose(pb[1]);
351 url_fclose(pb[2]);
352 }else{
353 put_buffer(pb[0], pkt->data, pkt->size);
354 }
355 put_flush_packet(pb[0]);
356 if (!img->is_pipe) {
357 url_fclose(pb[0]);
358 }
359
360 img->img_number++;
361 return 0;
362 }
363
364 static int img_write_trailer(AVFormatContext *s)
365 {
366 return 0;
367 }
368
369 #endif /* CONFIG_MUXERS */
370
371 /* input */
372 #ifdef CONFIG_IMAGE2_DEMUXER
373 AVInputFormat image2_demuxer = {
374 "image2",
375 "image2 sequence",
376 sizeof(VideoData),
377 image_probe,
378 img_read_header,
379 img_read_packet,
380 img_read_close,
381 NULL,
382 NULL,
383 AVFMT_NOFILE,
384 };
385 #endif
386 #ifdef CONFIG_IMAGE2PIPE_DEMUXER
387 AVInputFormat image2pipe_demuxer = {
388 "image2pipe",
389 "piped image2 sequence",
390 sizeof(VideoData),
391 NULL, /* no probe */
392 img_read_header,
393 img_read_packet,
394 img_read_close,
395 NULL,
396 };
397 #endif
398
399 /* output */
400 #ifdef CONFIG_IMAGE2_MUXER
401 AVOutputFormat image2_muxer = {
402 "image2",
403 "image2 sequence",
404 "",
405 "",
406 sizeof(VideoData),
407 CODEC_ID_NONE,
408 CODEC_ID_MJPEG,
409 img_write_header,
410 img_write_packet,
411 img_write_trailer,
412 AVFMT_NOFILE,
413 };
414 #endif
415 #ifdef CONFIG_IMAGE2PIPE_MUXER
416 AVOutputFormat image2pipe_muxer = {
417 "image2pipe",
418 "piped image2 sequence",
419 "",
420 "",
421 sizeof(VideoData),
422 CODEC_ID_NONE,
423 CODEC_ID_MJPEG,
424 img_write_header,
425 img_write_packet,
426 img_write_trailer,
427 };
428 #endif