-
-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 f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
- 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;
- }
-}
-
-static int img_read_close(AVFormatContext *s1)
-{
- return 0;
-}
-
-#ifdef CONFIG_MUXERS
-/******************************************************/
-/* 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 pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
- 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{
- 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;
-}
-
-static int img_write_trailer(AVFormatContext *s)
-{
- return 0;
-}
-
-#endif /* CONFIG_MUXERS */
-
-/* input */
-#ifdef CONFIG_IMAGE2_DEMUXER
-AVInputFormat image2_demuxer = {
- "image2",
- "image2 sequence",
- sizeof(VideoData),
- image_probe,
- img_read_header,
- img_read_packet,
- img_read_close,
- NULL,
- NULL,
- AVFMT_NOFILE,
-};
-#endif
-#ifdef CONFIG_IMAGE2PIPE_DEMUXER
-AVInputFormat image2pipe_demuxer = {
- "image2pipe",
- "piped image2 sequence",
- sizeof(VideoData),
- NULL, /* no probe */
- img_read_header,
- img_read_packet,
- img_read_close,
- NULL,
-};
-#endif
-
-/* output */
-#ifdef CONFIG_IMAGE2_MUXER
-AVOutputFormat image2_muxer = {
- "image2",
- "image2 sequence",
- "",
- "",
- sizeof(VideoData),
- CODEC_ID_NONE,
- CODEC_ID_MJPEG,
- img_write_header,
- img_write_packet,
- img_write_trailer,
- AVFMT_NOFILE,
-};
-#endif
-#ifdef CONFIG_IMAGE2PIPE_MUXER
-AVOutputFormat image2pipe_muxer = {
- "image2pipe",
- "piped image2 sequence",
- "",
- "",
- sizeof(VideoData),
- CODEC_ID_NONE,
- CODEC_ID_MJPEG,
- img_write_header,
- img_write_packet,
- img_write_trailer,
-};
-#endif