| /* |
| * Image format |
| * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
| * Copyright (c) 2004 Michael Niedermayer |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/avstring.h" |
| #include "avformat.h" |
| #include <strings.h> |
| |
| typedef struct { |
| int img_first; |
| int img_last; |
| int img_number; |
| int img_count; |
| int is_pipe; |
| char path[1024]; |
| } VideoData; |
| |
| typedef struct { |
| enum CodecID id; |
| const char *str; |
| } IdStrMap; |
| |
| static const IdStrMap img_tags[] = { |
| { CODEC_ID_MJPEG , "jpeg"}, |
| { CODEC_ID_MJPEG , "jpg"}, |
| { CODEC_ID_LJPEG , "ljpg"}, |
| { CODEC_ID_PNG , "png"}, |
| { CODEC_ID_PNG , "mng"}, |
| { CODEC_ID_PPM , "ppm"}, |
| { CODEC_ID_PPM , "pnm"}, |
| { CODEC_ID_PGM , "pgm"}, |
| { CODEC_ID_PGMYUV , "pgmyuv"}, |
| { CODEC_ID_PBM , "pbm"}, |
| { CODEC_ID_PAM , "pam"}, |
| { CODEC_ID_MPEG1VIDEO, "mpg1-img"}, |
| { CODEC_ID_MPEG2VIDEO, "mpg2-img"}, |
| { CODEC_ID_MPEG4 , "mpg4-img"}, |
| { CODEC_ID_FFV1 , "ffv1-img"}, |
| { CODEC_ID_RAWVIDEO , "y"}, |
| { CODEC_ID_BMP , "bmp"}, |
| { CODEC_ID_GIF , "gif"}, |
| { CODEC_ID_TARGA , "tga"}, |
| { CODEC_ID_TIFF , "tiff"}, |
| { CODEC_ID_TIFF , "tif"}, |
| { CODEC_ID_SGI , "sgi"}, |
| { CODEC_ID_PTX , "ptx"}, |
| { CODEC_ID_PCX , "pcx"}, |
| { CODEC_ID_SUNRAST , "sun"}, |
| { CODEC_ID_SUNRAST , "ras"}, |
| { CODEC_ID_SUNRAST , "rs"}, |
| { CODEC_ID_SUNRAST , "im1"}, |
| { CODEC_ID_SUNRAST , "im8"}, |
| { CODEC_ID_SUNRAST , "im24"}, |
| { CODEC_ID_SUNRAST , "sunras"}, |
| { CODEC_ID_JPEG2000 , "jp2"}, |
| { CODEC_ID_NONE , NULL} |
| }; |
| |
| static const int sizes[][2] = { |
| { 640, 480 }, |
| { 720, 480 }, |
| { 720, 576 }, |
| { 352, 288 }, |
| { 352, 240 }, |
| { 160, 128 }, |
| { 512, 384 }, |
| { 640, 352 }, |
| { 640, 240 }, |
| }; |
| |
| static int infer_size(int *width_ptr, int *height_ptr, int size) |
| { |
| int i; |
| |
| for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) { |
| if ((sizes[i][0] * sizes[i][1]) == size) { |
| *width_ptr = sizes[i][0]; |
| *height_ptr = sizes[i][1]; |
| return 0; |
| } |
| } |
| return -1; |
| } |
| static enum CodecID av_str2id(const IdStrMap *tags, const char *str) |
| { |
| str= strrchr(str, '.'); |
| if(!str) return CODEC_ID_NONE; |
| str++; |
| |
| while (tags->id) { |
| if (!strcasecmp(str, tags->str)) |
| return tags->id; |
| |
| tags++; |
| } |
| return CODEC_ID_NONE; |
| } |
| |
| /* return -1 if no image found */ |
| static int find_image_range(int *pfirst_index, int *plast_index, |
| const char *path) |
| { |
| char buf[1024]; |
| int range, last_index, range1, first_index; |
| |
| /* find the first image */ |
| for(first_index = 0; first_index < 5; first_index++) { |
| if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){ |
| *pfirst_index = |
| *plast_index = 1; |
| return 0; |
| } |
| if (url_exist(buf)) |
| break; |
| } |
| if (first_index == 5) |
| goto fail; |
| |
| /* find the last image */ |
| last_index = first_index; |
| for(;;) { |
| range = 0; |
| for(;;) { |
| if (!range) |
| range1 = 1; |
| else |
| range1 = 2 * range; |
| if (av_get_frame_filename(buf, sizeof(buf), path, |
| last_index + range1) < 0) |
| goto fail; |
| if (!url_exist(buf)) |
| break; |
| range = range1; |
| /* just in case... */ |
| if (range >= (1 << 30)) |
| goto fail; |
| } |
| /* we are sure than image last_index + range exists */ |
| if (!range) |
| break; |
| last_index += range; |
| } |
| *pfirst_index = first_index; |
| *plast_index = last_index; |
| return 0; |
| fail: |
| return -1; |
| } |
| |
| |
| static int image_probe(AVProbeData *p) |
| { |
| if (p->filename && av_str2id(img_tags, p->filename)) { |
| if (av_filename_number_test(p->filename)) |
| return AVPROBE_SCORE_MAX; |
| else |
| return AVPROBE_SCORE_MAX/2; |
| } |
| return 0; |
| } |
| |
| enum CodecID av_guess_image2_codec(const char *filename){ |
| return av_str2id(img_tags, filename); |
| } |
| |
| static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap) |
| { |
| VideoData *s = s1->priv_data; |
| int first_index, last_index; |
| AVStream *st; |
| |
| s1->ctx_flags |= AVFMTCTX_NOHEADER; |
| |
| st = av_new_stream(s1, 0); |
| if (!st) { |
| return AVERROR(ENOMEM); |
| } |
| |
| av_strlcpy(s->path, s1->filename, sizeof(s->path)); |
| s->img_number = 0; |
| s->img_count = 0; |
| |
| /* find format */ |
| if (s1->iformat->flags & AVFMT_NOFILE) |
| s->is_pipe = 0; |
| else{ |
| s->is_pipe = 1; |
| st->need_parsing = AVSTREAM_PARSE_FULL; |
| } |
| |
| if (!ap->time_base.num) { |
| av_set_pts_info(st, 60, 1, 25); |
| } else { |
| av_set_pts_info(st, 60, ap->time_base.num, ap->time_base.den); |
| } |
| |
| if(ap->width && ap->height){ |
| st->codec->width = ap->width; |
| st->codec->height= ap->height; |
| } |
| |
| if (!s->is_pipe) { |
| if (find_image_range(&first_index, &last_index, s->path) < 0) |
| return AVERROR(EIO); |
| s->img_first = first_index; |
| s->img_last = last_index; |
| s->img_number = first_index; |
| /* compute duration */ |
| st->start_time = 0; |
| st->duration = last_index - first_index + 1; |
| } |
| |
| if(ap->video_codec_id){ |
| st->codec->codec_type = CODEC_TYPE_VIDEO; |
| st->codec->codec_id = ap->video_codec_id; |
| }else if(ap->audio_codec_id){ |
| st->codec->codec_type = CODEC_TYPE_AUDIO; |
| st->codec->codec_id = ap->audio_codec_id; |
| }else{ |
| st->codec->codec_type = CODEC_TYPE_VIDEO; |
| st->codec->codec_id = av_str2id(img_tags, s->path); |
| } |
| if(st->codec->codec_type == CODEC_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE) |
| st->codec->pix_fmt = ap->pix_fmt; |
| |
| return 0; |
| } |
| |
| static int img_read_packet(AVFormatContext *s1, AVPacket *pkt) |
| { |
| VideoData *s = s1->priv_data; |
| char filename[1024]; |
| int i; |
| int size[3]={0}, ret[3]={0}; |
| ByteIOContext *f[3]; |
| AVCodecContext *codec= s1->streams[0]->codec; |
| |
| if (!s->is_pipe) { |
| /* loop over input */ |
| if (s1->loop_input && s->img_number > s->img_last) { |
| s->img_number = s->img_first; |
| } |
| if (av_get_frame_filename(filename, sizeof(filename), |
| s->path, s->img_number)<0 && s->img_number > 1) |
| return AVERROR(EIO); |
| for(i=0; i<3; i++){ |
| if (url_fopen(&f[i], filename, URL_RDONLY) < 0) |
| return AVERROR(EIO); |
| size[i]= url_fsize(f[i]); |
| |
| if(codec->codec_id != CODEC_ID_RAWVIDEO) |
| break; |
| filename[ strlen(filename) - 1 ]= 'U' + i; |
| } |
| |
| if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width) |
| infer_size(&codec->width, &codec->height, size[0]); |
| } else { |
| f[0] = s1->pb; |
| if (url_feof(f[0])) |
| return AVERROR(EIO); |
| size[0]= 4096; |
| } |
| |
| av_new_packet(pkt, size[0] + size[1] + size[2]); |
| pkt->stream_index = 0; |
| pkt->flags |= PKT_FLAG_KEY; |
| |
| pkt->size= 0; |
| for(i=0; i<3; i++){ |
| if(size[i]){ |
| ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]); |
| if (!s->is_pipe) |
| url_fclose(f[i]); |
| if(ret[i]>0) |
| pkt->size += ret[i]; |
| } |
| } |
| |
| if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) { |
| av_free_packet(pkt); |
| return AVERROR(EIO); /* signal EOF */ |
| } else { |
| s->img_count++; |
| s->img_number++; |
| return 0; |
| } |
| } |
| |
| #if CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER |
| /******************************************************/ |
| /* image output */ |
| |
| static int img_write_header(AVFormatContext *s) |
| { |
| VideoData *img = s->priv_data; |
| |
| img->img_number = 1; |
| av_strlcpy(img->path, s->filename, sizeof(img->path)); |
| |
| /* find format */ |
| if (s->oformat->flags & AVFMT_NOFILE) |
| img->is_pipe = 0; |
| else |
| img->is_pipe = 1; |
| |
| return 0; |
| } |
| |
| static int img_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| VideoData *img = s->priv_data; |
| ByteIOContext *pb[3]; |
| char filename[1024]; |
| AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec; |
| int i; |
| |
| if (!img->is_pipe) { |
| if (av_get_frame_filename(filename, sizeof(filename), |
| img->path, img->img_number) < 0 && img->img_number>1) |
| return AVERROR(EIO); |
| for(i=0; i<3; i++){ |
| if (url_fopen(&pb[i], filename, URL_WRONLY) < 0) |
| return AVERROR(EIO); |
| |
| if(codec->codec_id != CODEC_ID_RAWVIDEO) |
| break; |
| filename[ strlen(filename) - 1 ]= 'U' + i; |
| } |
| } else { |
| pb[0] = s->pb; |
| } |
| |
| if(codec->codec_id == CODEC_ID_RAWVIDEO){ |
| int ysize = codec->width * codec->height; |
| put_buffer(pb[0], pkt->data , ysize); |
| put_buffer(pb[1], pkt->data + ysize, (pkt->size - ysize)/2); |
| put_buffer(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2); |
| put_flush_packet(pb[1]); |
| put_flush_packet(pb[2]); |
| url_fclose(pb[1]); |
| url_fclose(pb[2]); |
| }else{ |
| if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){ |
| AVStream *st = s->streams[0]; |
| if(st->codec->extradata_size > 8 && |
| AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){ |
| if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c')) |
| goto error; |
| put_be32(pb[0], 12); |
| put_tag (pb[0], "jP "); |
| put_be32(pb[0], 0x0D0A870A); // signature |
| put_be32(pb[0], 20); |
| put_tag (pb[0], "ftyp"); |
| put_tag (pb[0], "jp2 "); |
| put_be32(pb[0], 0); |
| put_tag (pb[0], "jp2 "); |
| put_buffer(pb[0], st->codec->extradata, st->codec->extradata_size); |
| }else if(pkt->size < 8 || |
| (!st->codec->extradata_size && |
| AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature |
| error: |
| av_log(s, AV_LOG_ERROR, "malformated jpeg2000 codestream\n"); |
| return -1; |
| } |
| } |
| put_buffer(pb[0], pkt->data, pkt->size); |
| } |
| put_flush_packet(pb[0]); |
| if (!img->is_pipe) { |
| url_fclose(pb[0]); |
| } |
| |
| img->img_number++; |
| return 0; |
| } |
| |
| #endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */ |
| |
| /* input */ |
| #if CONFIG_IMAGE2_DEMUXER |
| AVInputFormat image2_demuxer = { |
| "image2", |
| NULL_IF_CONFIG_SMALL("image2 sequence"), |
| sizeof(VideoData), |
| image_probe, |
| img_read_header, |
| img_read_packet, |
| NULL, |
| NULL, |
| NULL, |
| AVFMT_NOFILE, |
| }; |
| #endif |
| #if CONFIG_IMAGE2PIPE_DEMUXER |
| AVInputFormat image2pipe_demuxer = { |
| "image2pipe", |
| NULL_IF_CONFIG_SMALL("piped image2 sequence"), |
| sizeof(VideoData), |
| NULL, /* no probe */ |
| img_read_header, |
| img_read_packet, |
| }; |
| #endif |
| |
| /* output */ |
| #if CONFIG_IMAGE2_MUXER |
| AVOutputFormat image2_muxer = { |
| "image2", |
| NULL_IF_CONFIG_SMALL("image2 sequence"), |
| "", |
| "bmp,jpeg,jpg,ljpg,pam,pbm,pgm,pgmyuv,png,ppm,sgi,tif,tiff,jp2", |
| sizeof(VideoData), |
| CODEC_ID_NONE, |
| CODEC_ID_MJPEG, |
| img_write_header, |
| img_write_packet, |
| NULL, |
| .flags= AVFMT_NOTIMESTAMPS | AVFMT_NOFILE |
| }; |
| #endif |
| #if CONFIG_IMAGE2PIPE_MUXER |
| AVOutputFormat image2pipe_muxer = { |
| "image2pipe", |
| NULL_IF_CONFIG_SMALL("piped image2 sequence"), |
| "", |
| "", |
| sizeof(VideoData), |
| CODEC_ID_NONE, |
| CODEC_ID_MJPEG, |
| img_write_header, |
| img_write_packet, |
| .flags= AVFMT_NOTIMESTAMPS |
| }; |
| #endif |
