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 23#include "libavutil/intreadwrite.h" 24#include "libavutil/avstring.h" 25#include "avformat.h" 26#include <strings.h> 27 28typedef struct { 29 int img_first; 30 int img_last; 31 int img_number; 32 int img_count; 33 int is_pipe; 34 char path[1024]; 35} VideoData; 36 37typedef struct { 38 enum CodecID id; 39 const char *str; 40} IdStrMap; 41 42static const IdStrMap img_tags[] = { 43 { CODEC_ID_MJPEG , "jpeg"}, 44 { CODEC_ID_MJPEG , "jpg"}, 45 { CODEC_ID_LJPEG , "ljpg"}, 46 { CODEC_ID_PNG , "png"}, 47 { CODEC_ID_PNG , "mng"}, 48 { CODEC_ID_PPM , "ppm"}, 49 { CODEC_ID_PPM , "pnm"}, 50 { CODEC_ID_PGM , "pgm"}, 51 { CODEC_ID_PGMYUV , "pgmyuv"}, 52 { CODEC_ID_PBM , "pbm"}, 53 { CODEC_ID_PAM , "pam"}, 54 { CODEC_ID_MPEG1VIDEO, "mpg1-img"}, 55 { CODEC_ID_MPEG2VIDEO, "mpg2-img"}, 56 { CODEC_ID_MPEG4 , "mpg4-img"}, 57 { CODEC_ID_FFV1 , "ffv1-img"}, 58 { CODEC_ID_RAWVIDEO , "y"}, 59 { CODEC_ID_BMP , "bmp"}, 60 { CODEC_ID_GIF , "gif"}, 61 { CODEC_ID_TARGA , "tga"}, 62 { CODEC_ID_TIFF , "tiff"}, 63 { CODEC_ID_TIFF , "tif"}, 64 { CODEC_ID_SGI , "sgi"}, 65 { CODEC_ID_PTX , "ptx"}, 66 { CODEC_ID_PCX , "pcx"}, 67 { CODEC_ID_SUNRAST , "sun"}, 68 { CODEC_ID_SUNRAST , "ras"}, 69 { CODEC_ID_SUNRAST , "rs"}, 70 { CODEC_ID_SUNRAST , "im1"}, 71 { CODEC_ID_SUNRAST , "im8"}, 72 { CODEC_ID_SUNRAST , "im24"}, 73 { CODEC_ID_SUNRAST , "sunras"}, 74 { CODEC_ID_JPEG2000 , "jp2"}, 75 { CODEC_ID_DPX , "dpx"}, 76 { CODEC_ID_NONE , NULL} 77}; 78 79static const int sizes[][2] = { 80 { 640, 480 }, 81 { 720, 480 }, 82 { 720, 576 }, 83 { 352, 288 }, 84 { 352, 240 }, 85 { 160, 128 }, 86 { 512, 384 }, 87 { 640, 352 }, 88 { 640, 240 }, 89}; 90 91static int infer_size(int *width_ptr, int *height_ptr, int size) 92{ 93 int i; 94 95 for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) { 96 if ((sizes[i][0] * sizes[i][1]) == size) { 97 *width_ptr = sizes[i][0]; 98 *height_ptr = sizes[i][1]; 99 return 0; 100 } 101 } 102 return -1; 103} 104static enum CodecID av_str2id(const IdStrMap *tags, const char *str) 105{ 106 str= strrchr(str, '.'); 107 if(!str) return CODEC_ID_NONE; 108 str++; 109 110 while (tags->id) { 111 if (!strcasecmp(str, tags->str)) 112 return tags->id; 113 114 tags++; 115 } 116 return CODEC_ID_NONE; 117} 118 119/* return -1 if no image found */ 120static int find_image_range(int *pfirst_index, int *plast_index, 121 const char *path) 122{ 123 char buf[1024]; 124 int range, last_index, range1, first_index; 125 126 /* find the first image */ 127 for(first_index = 0; first_index < 5; first_index++) { 128 if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){ 129 *pfirst_index = 130 *plast_index = 1; 131 if(url_exist(buf)) 132 return 0; 133 return -1; 134 } 135 if (url_exist(buf)) 136 break; 137 } 138 if (first_index == 5) 139 goto fail; 140 141 /* find the last image */ 142 last_index = first_index; 143 for(;;) { 144 range = 0; 145 for(;;) { 146 if (!range) 147 range1 = 1; 148 else 149 range1 = 2 * range; 150 if (av_get_frame_filename(buf, sizeof(buf), path, 151 last_index + range1) < 0) 152 goto fail; 153 if (!url_exist(buf)) 154 break; 155 range = range1; 156 /* just in case... */ 157 if (range >= (1 << 30)) 158 goto fail; 159 } 160 /* we are sure than image last_index + range exists */ 161 if (!range) 162 break; 163 last_index += range; 164 } 165 *pfirst_index = first_index; 166 *plast_index = last_index; 167 return 0; 168 fail: 169 return -1; 170} 171 172 173static int image_probe(AVProbeData *p) 174{ 175 if (p->filename && av_str2id(img_tags, p->filename)) { 176 if (av_filename_number_test(p->filename)) 177 return AVPROBE_SCORE_MAX; 178 else 179 return AVPROBE_SCORE_MAX/2; 180 } 181 return 0; 182} 183 184enum CodecID av_guess_image2_codec(const char *filename){ 185 return av_str2id(img_tags, filename); 186} 187 188static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap) 189{ 190 VideoData *s = s1->priv_data; 191 int first_index, last_index; 192 AVStream *st; 193 194 s1->ctx_flags |= AVFMTCTX_NOHEADER; 195 196 st = av_new_stream(s1, 0); 197 if (!st) { 198 return AVERROR(ENOMEM); 199 } 200 201 av_strlcpy(s->path, s1->filename, sizeof(s->path)); 202 s->img_number = 0; 203 s->img_count = 0; 204 205 /* find format */ 206 if (s1->iformat->flags & AVFMT_NOFILE) 207 s->is_pipe = 0; 208 else{ 209 s->is_pipe = 1; 210 st->need_parsing = AVSTREAM_PARSE_FULL; 211 } 212 213 if (!ap->time_base.num) { 214 av_set_pts_info(st, 60, 1, 25); 215 } else { 216 av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den); 217 } 218 219 if(ap->width && ap->height){ 220 st->codec->width = ap->width; 221 st->codec->height= ap->height; 222 } 223 224 if (!s->is_pipe) { 225 if (find_image_range(&first_index, &last_index, s->path) < 0) 226 return AVERROR(ENOENT); 227 s->img_first = first_index; 228 s->img_last = last_index; 229 s->img_number = first_index; 230 /* compute duration */ 231 st->start_time = 0; 232 st->duration = last_index - first_index + 1; 233 } 234 235 if(s1->video_codec_id){ 236 st->codec->codec_type = AVMEDIA_TYPE_VIDEO; 237 st->codec->codec_id = s1->video_codec_id; 238 }else if(s1->audio_codec_id){ 239 st->codec->codec_type = AVMEDIA_TYPE_AUDIO; 240 st->codec->codec_id = s1->audio_codec_id; 241 }else{ 242 st->codec->codec_type = AVMEDIA_TYPE_VIDEO; 243 st->codec->codec_id = av_str2id(img_tags, s->path); 244 } 245 if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE) 246 st->codec->pix_fmt = ap->pix_fmt; 247 248 return 0; 249} 250 251static int img_read_packet(AVFormatContext *s1, AVPacket *pkt) 252{ 253 VideoData *s = s1->priv_data; 254 char filename[1024]; 255 int i; 256 int size[3]={0}, ret[3]={0}; 257 ByteIOContext *f[3]; 258 AVCodecContext *codec= s1->streams[0]->codec; 259 260 if (!s->is_pipe) { 261 /* loop over input */ 262 if (s1->loop_input && s->img_number > s->img_last) { 263 s->img_number = s->img_first; 264 } 265 if (s->img_number > s->img_last) 266 return AVERROR_EOF; 267 if (av_get_frame_filename(filename, sizeof(filename), 268 s->path, s->img_number)<0 && s->img_number > 1) 269 return AVERROR(EIO); 270 for(i=0; i<3; i++){ 271 if (url_fopen(&f[i], filename, URL_RDONLY) < 0) { 272 if(i==1) 273 break; 274 av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename); 275 return AVERROR(EIO); 276 } 277 size[i]= url_fsize(f[i]); 278 279 if(codec->codec_id != CODEC_ID_RAWVIDEO) 280 break; 281 filename[ strlen(filename) - 1 ]= 'U' + i; 282 } 283 284 if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width) 285 infer_size(&codec->width, &codec->height, size[0]); 286 } else { 287 f[0] = s1->pb; 288 if (url_feof(f[0])) 289 return AVERROR(EIO); 290 size[0]= 4096; 291 } 292 293 av_new_packet(pkt, size[0] + size[1] + size[2]); 294 pkt->stream_index = 0; 295 pkt->flags |= AV_PKT_FLAG_KEY; 296 297 pkt->size= 0; 298 for(i=0; i<3; i++){ 299 if(size[i]){ 300 ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]); 301 if (!s->is_pipe) 302 url_fclose(f[i]); 303 if(ret[i]>0) 304 pkt->size += ret[i]; 305 } 306 } 307 308 if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) { 309 av_free_packet(pkt); 310 return AVERROR(EIO); /* signal EOF */ 311 } else { 312 s->img_count++; 313 s->img_number++; 314 return 0; 315 } 316} 317 318#if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER 319/******************************************************/ 320/* image output */ 321 322static int img_write_header(AVFormatContext *s) 323{ 324 VideoData *img = s->priv_data; 325 326 img->img_number = 1; 327 av_strlcpy(img->path, s->filename, sizeof(img->path)); 328 329 /* find format */ 330 if (s->oformat->flags & AVFMT_NOFILE) 331 img->is_pipe = 0; 332 else 333 img->is_pipe = 1; 334 335 return 0; 336} 337 338static int img_write_packet(AVFormatContext *s, AVPacket *pkt) 339{ 340 VideoData *img = s->priv_data; 341 ByteIOContext *pb[3]; 342 char filename[1024]; 343 AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec; 344 int i; 345 346 if (!img->is_pipe) { 347 if (av_get_frame_filename(filename, sizeof(filename), 348 img->path, img->img_number) < 0 && img->img_number>1) { 349 av_log(s, AV_LOG_ERROR, "Could not get frame filename from pattern\n"); 350 return AVERROR(EIO); 351 } 352 for(i=0; i<3; i++){ 353 if (url_fopen(&pb[i], filename, URL_WRONLY) < 0) { 354 av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename); 355 return AVERROR(EIO); 356 } 357 358 if(codec->codec_id != CODEC_ID_RAWVIDEO) 359 break; 360 filename[ strlen(filename) - 1 ]= 'U' + i; 361 } 362 } else { 363 pb[0] = s->pb; 364 } 365 366 if(codec->codec_id == CODEC_ID_RAWVIDEO){ 367 int ysize = codec->width * codec->height; 368 put_buffer(pb[0], pkt->data , ysize); 369 put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2); 370 put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2); 371 put_flush_packet(pb[1]); 372 put_flush_packet(pb[2]); 373 url_fclose(pb[1]); 374 url_fclose(pb[2]); 375 }else{ 376 if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){ 377 AVStream *st = s->streams[0]; 378 if(st->codec->extradata_size > 8 && 379 AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){ 380 if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c')) 381 goto error; 382 put_be32(pb[0], 12); 383 put_tag (pb[0], "jP "); 384 put_be32(pb[0], 0x0D0A870A); // signature 385 put_be32(pb[0], 20); 386 put_tag (pb[0], "ftyp"); 387 put_tag (pb[0], "jp2 "); 388 put_be32(pb[0], 0); 389 put_tag (pb[0], "jp2 "); 390 put_buffer(pb[0], st->codec->extradata, st->codec->extradata_size); 391 }else if(pkt->size < 8 || 392 (!st->codec->extradata_size && 393 AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature 394 error: 395 av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n"); 396 return -1; 397 } 398 } 399 put_buffer(pb[0], pkt->data, pkt->size); 400 } 401 put_flush_packet(pb[0]); 402 if (!img->is_pipe) { 403 url_fclose(pb[0]); 404 } 405 406 img->img_number++; 407 return 0; 408} 409 410#endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */ 411 412/* input */ 413#if CONFIG_IMAGE2_DEMUXER 414AVInputFormat image2_demuxer = { 415 "image2", 416 NULL_IF_CONFIG_SMALL("image2 sequence"), 417 sizeof(VideoData), 418 image_probe, 419 img_read_header, 420 img_read_packet, 421 NULL, 422 NULL, 423 NULL, 424 AVFMT_NOFILE, 425}; 426#endif 427#if CONFIG_IMAGE2PIPE_DEMUXER 428AVInputFormat image2pipe_demuxer = { 429 "image2pipe", 430 NULL_IF_CONFIG_SMALL("piped image2 sequence"), 431 sizeof(VideoData), 432 NULL, /* no probe */ 433 img_read_header, 434 img_read_packet, 435}; 436#endif 437 438/* output */ 439#if CONFIG_IMAGE2_MUXER 440AVOutputFormat image2_muxer = { 441 "image2", 442 NULL_IF_CONFIG_SMALL("image2 sequence"), 443 "", 444 "bmp,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,ppm,sgi,tif,tiff,jp2", 445 sizeof(VideoData), 446 CODEC_ID_NONE, 447 CODEC_ID_MJPEG, 448 img_write_header, 449 img_write_packet, 450 NULL, 451 .flags= AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE 452}; 453#endif 454#if CONFIG_IMAGE2PIPE_MUXER 455AVOutputFormat image2pipe_muxer = { 456 "image2pipe", 457 NULL_IF_CONFIG_SMALL("piped image2 sequence"), 458 "", 459 "", 460 sizeof(VideoData), 461 CODEC_ID_NONE, 462 CODEC_ID_MJPEG, 463 img_write_header, 464 img_write_packet, 465 .flags= AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS 466}; 467#endif 468