-
-#if FF_API_GUESS_IMG2_CODEC
-enum CodecID av_guess_image2_codec(const char *filename){
- return av_str2id(img_tags, filename);
-}
-#endif
-
-static int 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(ENOENT);
- 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(s1->video_codec_id){
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = s1->video_codec_id;
- }else if(s1->audio_codec_id){
- st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- st->codec->codec_id = s1->audio_codec_id;
- }else{
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = av_str2id(img_tags, s->path);
- }
- if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ap->pix_fmt != PIX_FMT_NONE)
- st->codec->pix_fmt = ap->pix_fmt;
-
- return 0;
-}
-
-static int read_packet(AVFormatContext *s1, AVPacket *pkt)
-{
- VideoData *s = s1->priv_data;
- char filename[1024];
- int i;
- int size[3]={0}, ret[3]={0};
- AVIOContext *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 (s->img_number > s->img_last)
- return AVERROR_EOF;
- 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 (avio_open(&f[i], filename, AVIO_FLAG_READ) < 0) {
- if(i==1)
- break;
- av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename);
- return AVERROR(EIO);
- }
- size[i]= avio_size(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 (f[0]->eof_reached)
- return AVERROR(EIO);
- size[0]= 4096;
- }
-
- av_new_packet(pkt, size[0] + size[1] + size[2]);
- pkt->stream_index = 0;
- pkt->flags |= AV_PKT_FLAG_KEY;
-
- pkt->size= 0;
- for(i=0; i<3; i++){
- if(size[i]){
- ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]);
- if (!s->is_pipe)
- avio_close(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 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 write_packet(AVFormatContext *s, AVPacket *pkt)
-{
- VideoData *img = s->priv_data;
- AVIOContext *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) {
- av_log(s, AV_LOG_ERROR,
- "Could not get frame filename number %d from pattern '%s'\n",
- img->img_number, img->path);
- return AVERROR(EIO);
- }
- for(i=0; i<3; i++){
- if (avio_open(&pb[i], filename, AVIO_FLAG_WRITE) < 0) {
- av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename);
- 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;
- avio_write(pb[0], pkt->data , ysize);
- avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2);
- avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2);
- avio_flush(pb[1]);
- avio_flush(pb[2]);
- avio_close(pb[1]);
- avio_close(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;
- avio_wb32(pb[0], 12);
- ffio_wfourcc(pb[0], "jP ");
- avio_wb32(pb[0], 0x0D0A870A); // signature
- avio_wb32(pb[0], 20);
- ffio_wfourcc(pb[0], "ftyp");
- ffio_wfourcc(pb[0], "jp2 ");
- avio_wb32(pb[0], 0);
- ffio_wfourcc(pb[0], "jp2 ");
- avio_write(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;
- }
- }
- avio_write(pb[0], pkt->data, pkt->size);
- }
- avio_flush(pb[0]);
- if (!img->is_pipe) {
- avio_close(pb[0]);
- }
-
- img->img_number++;
- return 0;
-}
-
-#endif /* CONFIG_IMAGE2_MUXER || CONFIG_IMAGE2PIPE_MUXER */
-
-/* input */
-#if CONFIG_IMAGE2_DEMUXER
-AVInputFormat ff_image2_demuxer = {
- .name = "image2",
- .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
- .priv_data_size = sizeof(VideoData),
- .read_probe = read_probe,
- .read_header = read_header,
- .read_packet = read_packet,
- .flags = AVFMT_NOFILE,
-};
-#endif
-#if CONFIG_IMAGE2PIPE_DEMUXER
-AVInputFormat ff_image2pipe_demuxer = {
- .name = "image2pipe",
- .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
- .priv_data_size = sizeof(VideoData),
- .read_header = read_header,
- .read_packet = read_packet,
-};
-#endif
-
-/* output */
-#if CONFIG_IMAGE2_MUXER
-AVOutputFormat ff_image2_muxer = {
- .name = "image2",
- .long_name = NULL_IF_CONFIG_SMALL("image2 sequence"),
- .extensions = "bmp,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png,"
- "ppm,sgi,tga,tif,tiff,jp2",
- .priv_data_size = sizeof(VideoData),
- .video_codec = CODEC_ID_MJPEG,
- .write_header = write_header,
- .write_packet = write_packet,
- .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE
-};
-#endif
-#if CONFIG_IMAGE2PIPE_MUXER
-AVOutputFormat ff_image2pipe_muxer = {
- .name = "image2pipe",
- .long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"),
- .priv_data_size = sizeof(VideoData),
- .video_codec = CODEC_ID_MJPEG,
- .write_header = write_header,
- .write_packet = write_packet,
- .flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS
-};
-#endif