+#if FF_API_MAX_STREAMS
+ if (!pes->st && pes->stream->nb_streams == MAX_STREAMS)
+ goto skip;
+#endif
+
+ /* stream not present in PMT */
+ if (!pes->st) {
+ pes->st = av_new_stream(ts->stream, pes->pid);
+ if (!pes->st)
+ return AVERROR(ENOMEM);
+ mpegts_set_stream_info(pes->st, pes, 0, 0);
+ }
+
+ pes->total_size = AV_RB16(pes->header + 4);
+ /* NOTE: a zero total size means the PES size is
+ unbounded */
+ if (!pes->total_size)
+ pes->total_size = MAX_PES_PAYLOAD;
+
+ /* allocate pes buffer */
+ pes->buffer = av_malloc(pes->total_size+FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!pes->buffer)
+ return AVERROR(ENOMEM);
+
+ if (code != 0x1bc && code != 0x1bf && /* program_stream_map, private_stream_2 */
+ code != 0x1f0 && code != 0x1f1 && /* ECM, EMM */
+ code != 0x1ff && code != 0x1f2 && /* program_stream_directory, DSMCC_stream */
+ code != 0x1f8) { /* ITU-T Rec. H.222.1 type E stream */
+ pes->state = MPEGTS_PESHEADER;
+ if (pes->st->codec->codec_id == CODEC_ID_NONE) {
+ av_dlog(pes->stream, "pid=%x stream_type=%x probing\n",
+ pes->pid, pes->stream_type);
+ pes->st->codec->codec_id = CODEC_ID_PROBE;
+ }
+ } else {
+ pes->state = MPEGTS_PAYLOAD;
+ pes->data_index = 0;
+ }
+ } else {
+ /* otherwise, it should be a table */
+ /* skip packet */
+ skip:
+ pes->state = MPEGTS_SKIP;
+ continue;
+ }
+ }
+ break;
+ /**********************************************/
+ /* PES packing parsing */
+ case MPEGTS_PESHEADER:
+ len = PES_HEADER_SIZE - pes->data_index;
+ if (len < 0)
+ return -1;
+ if (len > buf_size)
+ len = buf_size;
+ memcpy(pes->header + pes->data_index, p, len);
+ pes->data_index += len;
+ p += len;
+ buf_size -= len;
+ if (pes->data_index == PES_HEADER_SIZE) {
+ pes->pes_header_size = pes->header[8] + 9;
+ pes->state = MPEGTS_PESHEADER_FILL;
+ }
+ break;
+ case MPEGTS_PESHEADER_FILL:
+ len = pes->pes_header_size - pes->data_index;
+ if (len < 0)
+ return -1;
+ if (len > buf_size)
+ len = buf_size;
+ memcpy(pes->header + pes->data_index, p, len);
+ pes->data_index += len;
+ p += len;
+ buf_size -= len;
+ if (pes->data_index == pes->pes_header_size) {
+ const uint8_t *r;
+ unsigned int flags, pes_ext, skip;
+
+ flags = pes->header[7];
+ r = pes->header + 9;
+ pes->pts = AV_NOPTS_VALUE;
+ pes->dts = AV_NOPTS_VALUE;
+ if ((flags & 0xc0) == 0x80) {
+ pes->dts = pes->pts = ff_parse_pes_pts(r);
+ r += 5;
+ } else if ((flags & 0xc0) == 0xc0) {
+ pes->pts = ff_parse_pes_pts(r);
+ r += 5;
+ pes->dts = ff_parse_pes_pts(r);
+ r += 5;
+ }
+ pes->extended_stream_id = -1;
+ if (flags & 0x01) { /* PES extension */
+ pes_ext = *r++;
+ /* Skip PES private data, program packet sequence counter and P-STD buffer */
+ skip = (pes_ext >> 4) & 0xb;
+ skip += skip & 0x9;
+ r += skip;
+ if ((pes_ext & 0x41) == 0x01 &&
+ (r + 2) <= (pes->header + pes->pes_header_size)) {
+ /* PES extension 2 */
+ if ((r[0] & 0x7f) > 0 && (r[1] & 0x80) == 0)
+ pes->extended_stream_id = r[1];
+ }
+ }
+
+ /* we got the full header. We parse it and get the payload */
+ pes->state = MPEGTS_PAYLOAD;
+ pes->data_index = 0;
+ }
+ break;
+ case MPEGTS_PAYLOAD:
+ if (buf_size > 0 && pes->buffer) {
+ if (pes->data_index > 0 && pes->data_index+buf_size > pes->total_size) {
+ new_pes_packet(pes, ts->pkt);
+ pes->total_size = MAX_PES_PAYLOAD;
+ pes->buffer = av_malloc(pes->total_size+FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!pes->buffer)
+ return AVERROR(ENOMEM);
+ ts->stop_parse = 1;
+ } else if (pes->data_index == 0 && buf_size > pes->total_size) {
+ // pes packet size is < ts size packet and pes data is padded with 0xff
+ // not sure if this is legal in ts but see issue #2392
+ buf_size = pes->total_size;
+ }
+ memcpy(pes->buffer+pes->data_index, p, buf_size);
+ pes->data_index += buf_size;
+ }
+ buf_size = 0;
+ /* emit complete packets with known packet size
+ * decreases demuxer delay for infrequent packets like subtitles from
+ * a couple of seconds to milliseconds for properly muxed files.
+ * total_size is the number of bytes following pes_packet_length
+ * in the pes header, i.e. not counting the first 6 bytes */
+ if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD &&
+ pes->pes_header_size + pes->data_index == pes->total_size + 6) {
+ ts->stop_parse = 1;
+ new_pes_packet(pes, ts->pkt);
+ }
+ break;
+ case MPEGTS_SKIP:
+ buf_size = 0;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static PESContext *add_pes_stream(MpegTSContext *ts, int pid, int pcr_pid)
+{
+ MpegTSFilter *tss;
+ PESContext *pes;
+
+ /* if no pid found, then add a pid context */
+ pes = av_mallocz(sizeof(PESContext));
+ if (!pes)
+ return 0;
+ pes->ts = ts;
+ pes->stream = ts->stream;
+ pes->pid = pid;
+ pes->pcr_pid = pcr_pid;
+ pes->state = MPEGTS_SKIP;
+ pes->pts = AV_NOPTS_VALUE;
+ pes->dts = AV_NOPTS_VALUE;
+ tss = mpegts_open_pes_filter(ts, pid, mpegts_push_data, pes);
+ if (!tss) {
+ av_free(pes);
+ return 0;
+ }
+ return pes;
+}
+
+static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size,
+ int *es_id, uint8_t **dec_config_descr,
+ int *dec_config_descr_size)
+{
+ AVIOContext pb;
+ int tag;
+ unsigned len;
+
+ ffio_init_context(&pb, buf, size, 0, NULL, NULL, NULL, NULL);
+
+ len = ff_mp4_read_descr(s, &pb, &tag);
+ if (tag == MP4IODescrTag) {
+ avio_rb16(&pb); // ID
+ avio_r8(&pb);
+ avio_r8(&pb);
+ avio_r8(&pb);
+ avio_r8(&pb);
+ avio_r8(&pb);
+ len = ff_mp4_read_descr(s, &pb, &tag);
+ if (tag == MP4ESDescrTag) {
+ *es_id = avio_rb16(&pb); /* ES_ID */
+ av_dlog(s, "ES_ID %#x\n", *es_id);
+ avio_r8(&pb); /* priority */
+ len = ff_mp4_read_descr(s, &pb, &tag);
+ if (tag == MP4DecConfigDescrTag) {
+ *dec_config_descr = av_malloc(len);
+ if (!*dec_config_descr)
+ return AVERROR(ENOMEM);
+ *dec_config_descr_size = len;
+ avio_read(&pb, *dec_config_descr, len);
+ }
+ }
+ }
+ return 0;
+}
+
+int ff_parse_mpeg2_descriptor(AVFormatContext *fc, AVStream *st, int stream_type,
+ const uint8_t **pp, const uint8_t *desc_list_end,
+ int mp4_dec_config_descr_len, int mp4_es_id, int pid,
+ uint8_t *mp4_dec_config_descr)
+{
+ const uint8_t *desc_end;
+ int desc_len, desc_tag;
+ char language[252];
+ int i;
+
+ desc_tag = get8(pp, desc_list_end);
+ if (desc_tag < 0)
+ return -1;
+ desc_len = get8(pp, desc_list_end);
+ if (desc_len < 0)
+ return -1;
+ desc_end = *pp + desc_len;
+ if (desc_end > desc_list_end)
+ return -1;
+
+ av_dlog(fc, "tag: 0x%02x len=%d\n", desc_tag, desc_len);
+
+ if (st->codec->codec_id == CODEC_ID_NONE &&
+ stream_type == STREAM_TYPE_PRIVATE_DATA)
+ mpegts_find_stream_type(st, desc_tag, DESC_types);
+
+ switch(desc_tag) {
+ case 0x1F: /* FMC descriptor */
+ get16(pp, desc_end);
+ if (st->codec->codec_id == CODEC_ID_AAC_LATM &&
+ mp4_dec_config_descr_len && mp4_es_id == pid) {
+ AVIOContext pb;
+ ffio_init_context(&pb, mp4_dec_config_descr,
+ mp4_dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
+ ff_mp4_read_dec_config_descr(fc, st, &pb);
+ if (st->codec->codec_id == CODEC_ID_AAC &&
+ st->codec->extradata_size > 0)
+ st->need_parsing = 0;
+ }
+ break;
+ case 0x56: /* DVB teletext descriptor */
+ language[0] = get8(pp, desc_end);
+ language[1] = get8(pp, desc_end);
+ language[2] = get8(pp, desc_end);
+ language[3] = 0;
+ av_metadata_set2(&st->metadata, "language", language, 0);
+ break;
+ case 0x59: /* subtitling descriptor */
+ language[0] = get8(pp, desc_end);
+ language[1] = get8(pp, desc_end);
+ language[2] = get8(pp, desc_end);
+ language[3] = 0;
+ /* hearing impaired subtitles detection */
+ switch(get8(pp, desc_end)) {
+ case 0x20: /* DVB subtitles (for the hard of hearing) with no monitor aspect ratio criticality */
+ case 0x21: /* DVB subtitles (for the hard of hearing) for display on 4:3 aspect ratio monitor */
+ case 0x22: /* DVB subtitles (for the hard of hearing) for display on 16:9 aspect ratio monitor */
+ case 0x23: /* DVB subtitles (for the hard of hearing) for display on 2.21:1 aspect ratio monitor */
+ case 0x24: /* DVB subtitles (for the hard of hearing) for display on a high definition monitor */
+ case 0x25: /* DVB subtitles (for the hard of hearing) with plano-stereoscopic disparity for display on a high definition monitor */
+ st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED;
+ break;
+ }
+ if (st->codec->extradata) {
+ if (st->codec->extradata_size == 4 && memcmp(st->codec->extradata, *pp, 4))
+ av_log_ask_for_sample(fc, "DVB sub with multiple IDs\n");
+ } else {
+ st->codec->extradata = av_malloc(4 + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (st->codec->extradata) {
+ st->codec->extradata_size = 4;
+ memcpy(st->codec->extradata, *pp, 4);
+ }
+ }
+ *pp += 4;
+ av_metadata_set2(&st->metadata, "language", language, 0);
+ break;
+ case 0x0a: /* ISO 639 language descriptor */
+ for (i = 0; i + 4 <= desc_len; i += 4) {
+ language[i + 0] = get8(pp, desc_end);
+ language[i + 1] = get8(pp, desc_end);
+ language[i + 2] = get8(pp, desc_end);
+ language[i + 3] = ',';
+ switch (get8(pp, desc_end)) {
+ case 0x01: st->disposition |= AV_DISPOSITION_CLEAN_EFFECTS; break;
+ case 0x02: st->disposition |= AV_DISPOSITION_HEARING_IMPAIRED; break;
+ case 0x03: st->disposition |= AV_DISPOSITION_VISUAL_IMPAIRED; break;
+ }
+ }
+ if (i) {
+ language[i - 1] = 0;
+ av_metadata_set2(&st->metadata, "language", language, 0);
+ }
+ break;
+ case 0x05: /* registration descriptor */
+ st->codec->codec_tag = bytestream_get_le32(pp);
+ av_dlog(fc, "reg_desc=%.4s\n", (char*)&st->codec->codec_tag);
+ if (st->codec->codec_id == CODEC_ID_NONE &&
+ stream_type == STREAM_TYPE_PRIVATE_DATA)
+ mpegts_find_stream_type(st, st->codec->codec_tag, REGD_types);
+ break;
+ default:
+ break;
+ }
+ *pp = desc_end;
+ return 0;