* MPEG2 transport stream (aka DVB) demuxer
* Copyright (c) 2002-2003 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-//#define DEBUG
-//#define DEBUG_SEEK
-//#define USE_SYNCPOINT_SEARCH
-
#include "libavutil/crc.h"
#include "libavutil/intreadwrite.h"
+#include "libavutil/log.h"
+#include "libavutil/dict.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
#include "libavcodec/bytestream.h"
+#include "libavcodec/get_bits.h"
#include "avformat.h"
#include "mpegts.h"
#include "internal.h"
+#include "avio_internal.h"
#include "seek.h"
#include "mpeg.h"
#include "isom.h"
#define MAX_PES_PAYLOAD 200*1024
+#define MAX_MP4_DESCR_COUNT 16
+
enum MpegTSFilterType {
MPEGTS_PES,
MPEGTS_SECTION,
struct MpegTSFilter {
int pid;
+ int es_id;
int last_cc; /* last cc code (-1 if first packet) */
enum MpegTSFilterType type;
union {
};
struct MpegTSContext {
+ const AVClass *class;
/* user data */
AVFormatContext *stream;
/** raw packet size, including FEC if present */
MpegTSFilter *pids[NB_PID_MAX];
};
+static const AVOption options[] = {
+ {"compute_pcr", "Compute exact PCR for each transport stream packet.", offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT,
+ {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
+ { NULL },
+};
+
+static const AVClass mpegtsraw_class = {
+ .class_name = "mpegtsraw demuxer",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
+
/* TS stream handling */
enum MpegTSState {
enum MpegTSState state;
/* used to get the format */
int data_index;
+ int flags; /**< copied to the AVPacket flags */
int total_size;
int pes_header_size;
int extended_stream_id;
int64_t ts_packet_pos; /**< position of first TS packet of this PES packet */
uint8_t header[MAX_PES_HEADER_SIZE];
uint8_t *buffer;
+ SLConfigDescr sl;
} PESContext;
extern AVInputFormat ff_mpegts_demuxer;
}
/**
- * \brief discard_pid() decides if the pid is to be discarded according
+ * @brief discard_pid() decides if the pid is to be discarded according
* to caller's programs selection
- * \param ts : - TS context
- * \param pid : - pid
- * \return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
+ * @param ts : - TS context
+ * @param pid : - pid
+ * @return 1 if the pid is only comprised in programs that have .discard=AVDISCARD_ALL
* 0 otherwise
*/
static int discard_pid(MpegTSContext *ts, unsigned int pid)
ts->pids[pid] = filter;
filter->type = MPEGTS_SECTION;
filter->pid = pid;
+ filter->es_id = -1;
filter->last_cc = -1;
sec = &filter->u.section_filter;
sec->section_cb = section_cb;
ts->pids[pid] = filter;
filter->type = MPEGTS_PES;
filter->pid = pid;
+ filter->es_id = -1;
filter->last_cc = -1;
pes = &filter->u.pes_filter;
pes->pes_cb = pes_cb;
PESContext *pes = filter->u.pes_filter.opaque;
av_freep(&pes->buffer);
/* referenced private data will be freed later in
- * av_close_input_stream */
+ * avformat_close_input */
if (!((PESContext *)filter->u.pes_filter.opaque)->st) {
av_freep(&filter->u.pes_filter.opaque);
}
score = analyze(buf, size, TS_PACKET_SIZE, NULL);
dvhs_score = analyze(buf, size, TS_DVHS_PACKET_SIZE, NULL);
fec_score= analyze(buf, size, TS_FEC_PACKET_SIZE, NULL);
-// av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
+ av_dlog(NULL, "score: %d, dvhs_score: %d, fec_score: %d \n",
+ score, dvhs_score, fec_score);
if (score > fec_score && score > dvhs_score) return TS_PACKET_SIZE;
else if(dvhs_score > score && dvhs_score > fec_score) return TS_DVHS_PACKET_SIZE;
return c;
}
-/* read and allocate a DVB string preceeded by its length */
+/* read and allocate a DVB string preceded by its length */
static char *getstr8(const uint8_t **pp, const uint8_t *p_end)
{
int len;
typedef struct {
uint32_t stream_type;
enum AVMediaType codec_type;
- enum CodecID codec_id;
+ enum AVCodecID codec_id;
} StreamType;
static const StreamType ISO_types[] = {
- { 0x01, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
- { 0x02, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG2VIDEO },
- { 0x03, AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3 },
- { 0x04, AVMEDIA_TYPE_AUDIO, CODEC_ID_MP3 },
- { 0x0f, AVMEDIA_TYPE_AUDIO, CODEC_ID_AAC },
- { 0x10, AVMEDIA_TYPE_VIDEO, CODEC_ID_MPEG4 },
- { 0x11, AVMEDIA_TYPE_AUDIO, CODEC_ID_AAC_LATM }, /* LATM syntax */
- { 0x1b, AVMEDIA_TYPE_VIDEO, CODEC_ID_H264 },
- { 0xd1, AVMEDIA_TYPE_VIDEO, CODEC_ID_DIRAC },
- { 0xea, AVMEDIA_TYPE_VIDEO, CODEC_ID_VC1 },
+ { 0x01, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
+ { 0x02, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG2VIDEO },
+ { 0x03, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
+ { 0x04, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_MP3 },
+ { 0x0f, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC },
+ { 0x10, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_MPEG4 },
+ { 0x11, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AAC_LATM }, /* LATM syntax */
+ { 0x1b, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_H264 },
+ { 0xd1, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
+ { 0xea, AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
{ 0 },
};
static const StreamType HDMV_types[] = {
- { 0x80, AVMEDIA_TYPE_AUDIO, CODEC_ID_PCM_BLURAY },
- { 0x81, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
- { 0x82, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
- { 0x83, AVMEDIA_TYPE_AUDIO, CODEC_ID_TRUEHD },
- { 0x84, AVMEDIA_TYPE_AUDIO, CODEC_ID_EAC3 },
- { 0x90, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_HDMV_PGS_SUBTITLE },
+ { 0x80, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_PCM_BLURAY },
+ { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
+ { 0x82, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
+ { 0x83, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_TRUEHD },
+ { 0x84, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 },
+ { 0x85, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD */
+ { 0x86, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS }, /* DTS HD MASTER*/
+ { 0x90, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_HDMV_PGS_SUBTITLE },
{ 0 },
};
/* ATSC ? */
static const StreamType MISC_types[] = {
- { 0x81, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
- { 0x8a, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
+ { 0x81, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
+ { 0x8a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
{ 0 },
};
static const StreamType REGD_types[] = {
- { MKTAG('d','r','a','c'), AVMEDIA_TYPE_VIDEO, CODEC_ID_DIRAC },
- { MKTAG('A','C','-','3'), AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 },
+ { MKTAG('d','r','a','c'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_DIRAC },
+ { MKTAG('A','C','-','3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 },
+ { MKTAG('B','S','S','D'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_S302M },
+ { MKTAG('D','T','S','1'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
+ { MKTAG('D','T','S','2'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
+ { MKTAG('D','T','S','3'), AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
+ { MKTAG('V','C','-','1'), AVMEDIA_TYPE_VIDEO, AV_CODEC_ID_VC1 },
{ 0 },
};
/* descriptor present */
static const StreamType DESC_types[] = {
- { 0x6a, AVMEDIA_TYPE_AUDIO, CODEC_ID_AC3 }, /* AC-3 descriptor */
- { 0x7a, AVMEDIA_TYPE_AUDIO, CODEC_ID_EAC3 }, /* E-AC-3 descriptor */
- { 0x7b, AVMEDIA_TYPE_AUDIO, CODEC_ID_DTS },
- { 0x56, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_DVB_TELETEXT },
- { 0x59, AVMEDIA_TYPE_SUBTITLE, CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */
+ { 0x6a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_AC3 }, /* AC-3 descriptor */
+ { 0x7a, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_EAC3 }, /* E-AC-3 descriptor */
+ { 0x7b, AVMEDIA_TYPE_AUDIO, AV_CODEC_ID_DTS },
+ { 0x56, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_TELETEXT },
+ { 0x59, AVMEDIA_TYPE_SUBTITLE, AV_CODEC_ID_DVB_SUBTITLE }, /* subtitling descriptor */
{ 0 },
};
static int mpegts_set_stream_info(AVStream *st, PESContext *pes,
uint32_t stream_type, uint32_t prog_reg_desc)
{
- av_set_pts_info(st, 33, 1, 90000);
+ avpriv_set_pts_info(st, 33, 1, 90000);
st->priv_data = pes;
st->codec->codec_type = AVMEDIA_TYPE_DATA;
- st->codec->codec_id = CODEC_ID_NONE;
+ st->codec->codec_id = AV_CODEC_ID_NONE;
st->need_parsing = AVSTREAM_PARSE_FULL;
pes->st = st;
pes->stream_type = stream_type;
mpegts_find_stream_type(st, pes->stream_type, ISO_types);
if (prog_reg_desc == AV_RL32("HDMV") &&
- st->codec->codec_id == CODEC_ID_NONE) {
+ st->codec->codec_id == AV_CODEC_ID_NONE) {
mpegts_find_stream_type(st, pes->stream_type, HDMV_types);
if (pes->stream_type == 0x83) {
// HDMV TrueHD streams also contain an AC3 coded version of the
return AVERROR(ENOMEM);
memcpy(sub_pes, pes, sizeof(*sub_pes));
- sub_st = av_new_stream(pes->stream, pes->pid);
+ sub_st = avformat_new_stream(pes->stream, NULL);
if (!sub_st) {
av_free(sub_pes);
return AVERROR(ENOMEM);
}
- av_set_pts_info(sub_st, 33, 1, 90000);
+ sub_st->id = pes->pid;
+ avpriv_set_pts_info(sub_st, 33, 1, 90000);
sub_st->priv_data = sub_pes;
sub_st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- sub_st->codec->codec_id = CODEC_ID_AC3;
+ sub_st->codec->codec_id = AV_CODEC_ID_AC3;
sub_st->need_parsing = AVSTREAM_PARSE_FULL;
sub_pes->sub_st = pes->sub_st = sub_st;
}
}
- if (st->codec->codec_id == CODEC_ID_NONE)
+ if (st->codec->codec_id == AV_CODEC_ID_NONE)
mpegts_find_stream_type(st, pes->stream_type, MISC_types);
return 0;
pkt->destruct = av_destruct_packet;
pkt->data = pes->buffer;
pkt->size = pes->data_index;
+
+ if(pes->total_size != MAX_PES_PAYLOAD &&
+ pes->pes_header_size + pes->data_index != pes->total_size + PES_START_SIZE) {
+ av_log(pes->stream, AV_LOG_WARNING, "PES packet size mismatch\n");
+ pes->flags |= AV_PKT_FLAG_CORRUPT;
+ }
memset(pkt->data+pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
// Separate out the AC3 substream from an HDMV combined TrueHD/AC3 PID
pkt->dts = pes->dts;
/* store position of first TS packet of this PES packet */
pkt->pos = pes->ts_packet_pos;
+ pkt->flags = pes->flags;
/* reset pts values */
pes->pts = AV_NOPTS_VALUE;
pes->dts = AV_NOPTS_VALUE;
pes->buffer = NULL;
pes->data_index = 0;
+ pes->flags = 0;
+}
+
+static int read_sl_header(PESContext *pes, SLConfigDescr *sl, const uint8_t *buf, int buf_size)
+{
+ GetBitContext gb;
+ int au_start_flag = 0, au_end_flag = 0, ocr_flag = 0, idle_flag = 0;
+ int padding_flag = 0, padding_bits = 0, inst_bitrate_flag = 0;
+ int dts_flag = -1, cts_flag = -1;
+ int64_t dts = AV_NOPTS_VALUE, cts = AV_NOPTS_VALUE;
+ init_get_bits(&gb, buf, buf_size*8);
+
+ if (sl->use_au_start)
+ au_start_flag = get_bits1(&gb);
+ if (sl->use_au_end)
+ au_end_flag = get_bits1(&gb);
+ if (!sl->use_au_start && !sl->use_au_end)
+ au_start_flag = au_end_flag = 1;
+ if (sl->ocr_len > 0)
+ ocr_flag = get_bits1(&gb);
+ if (sl->use_idle)
+ idle_flag = get_bits1(&gb);
+ if (sl->use_padding)
+ padding_flag = get_bits1(&gb);
+ if (padding_flag)
+ padding_bits = get_bits(&gb, 3);
+
+ if (!idle_flag && (!padding_flag || padding_bits != 0)) {
+ if (sl->packet_seq_num_len)
+ skip_bits_long(&gb, sl->packet_seq_num_len);
+ if (sl->degr_prior_len)
+ if (get_bits1(&gb))
+ skip_bits(&gb, sl->degr_prior_len);
+ if (ocr_flag)
+ skip_bits_long(&gb, sl->ocr_len);
+ if (au_start_flag) {
+ if (sl->use_rand_acc_pt)
+ get_bits1(&gb);
+ if (sl->au_seq_num_len > 0)
+ skip_bits_long(&gb, sl->au_seq_num_len);
+ if (sl->use_timestamps) {
+ dts_flag = get_bits1(&gb);
+ cts_flag = get_bits1(&gb);
+ }
+ }
+ if (sl->inst_bitrate_len)
+ inst_bitrate_flag = get_bits1(&gb);
+ if (dts_flag == 1)
+ dts = get_bits64(&gb, sl->timestamp_len);
+ if (cts_flag == 1)
+ cts = get_bits64(&gb, sl->timestamp_len);
+ if (sl->au_len > 0)
+ skip_bits_long(&gb, sl->au_len);
+ if (inst_bitrate_flag)
+ skip_bits_long(&gb, sl->inst_bitrate_len);
+ }
+
+ if (dts != AV_NOPTS_VALUE)
+ pes->dts = dts;
+ if (cts != AV_NOPTS_VALUE)
+ pes->pts = cts;
+
+ if (sl->timestamp_len && sl->timestamp_res)
+ avpriv_set_pts_info(pes->st, sl->timestamp_len, 1, sl->timestamp_res);
+
+ return (get_bits_count(&gb) + 7) >> 3;
}
/* return non zero if a packet could be constructed */
if (pes->data_index == PES_START_SIZE) {
/* we got all the PES or section header. We can now
decide */
-#if 0
- av_hex_dump_log(pes->stream, AV_LOG_DEBUG, pes->header, pes->data_index);
-#endif
if (pes->header[0] == 0x00 && pes->header[1] == 0x00 &&
pes->header[2] == 0x01) {
/* it must be an mpeg2 PES stream */
code = pes->header[3] | 0x100;
av_dlog(pes->stream, "pid=%x pes_code=%#x\n", pes->pid, code);
- if ((pes->st && pes->st->discard == AVDISCARD_ALL) ||
+ if ((pes->st && pes->st->discard == AVDISCARD_ALL &&
+ (!pes->sub_st || pes->sub_st->discard == AVDISCARD_ALL)) ||
code == 0x1be) /* padding_stream */
goto skip;
-#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);
+ pes->st = avformat_new_stream(ts->stream, NULL);
if (!pes->st)
return AVERROR(ENOMEM);
+ pes->st->id = pes->pid;
mpegts_set_stream_info(pes->st, pes, 0, 0);
}
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) {
+ if (pes->st->codec->codec_id == AV_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;
+ pes->st->codec->codec_id = AV_CODEC_ID_PROBE;
}
} else {
pes->state = MPEGTS_PAYLOAD;
/* we got the full header. We parse it and get the payload */
pes->state = MPEGTS_PAYLOAD;
pes->data_index = 0;
+ if (pes->stream_type == 0x12 && buf_size > 0) {
+ int sl_header_bytes = read_sl_header(pes, &pes->sl, p, buf_size);
+ pes->pes_header_size += sl_header_bytes;
+ p += sl_header_bytes;
+ buf_size -= sl_header_bytes;
+ }
}
break;
case MPEGTS_PAYLOAD:
* 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 (pes->total_size < MAX_PES_PAYLOAD &&
- pes->pes_header_size + pes->data_index == pes->total_size + 6) {
+ * in the pes header, i.e. not counting the first PES_START_SIZE bytes */
+ if (!ts->stop_parse && pes->total_size < MAX_PES_PAYLOAD &&
+ pes->pes_header_size + pes->data_index == pes->total_size + PES_START_SIZE) {
ts->stop_parse = 1;
new_pes_packet(pes, ts->pkt);
}
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)
+#define MAX_LEVEL 4
+typedef struct {
+ AVFormatContext *s;
+ AVIOContext pb;
+ Mp4Descr *descr;
+ Mp4Descr *active_descr;
+ int descr_count;
+ int max_descr_count;
+ int level;
+} MP4DescrParseContext;
+
+static int init_MP4DescrParseContext(
+ MP4DescrParseContext *d, AVFormatContext *s, const uint8_t *buf,
+ unsigned size, Mp4Descr *descr, int max_descr_count)
+{
+ int ret;
+ if (size > (1<<30))
+ return AVERROR_INVALIDDATA;
+
+ if ((ret = ffio_init_context(&d->pb, (unsigned char*)buf, size, 0,
+ NULL, NULL, NULL, NULL)) < 0)
+ return ret;
+
+ d->s = s;
+ d->level = 0;
+ d->descr_count = 0;
+ d->descr = descr;
+ d->active_descr = NULL;
+ d->max_descr_count = max_descr_count;
+
+ return 0;
+}
+
+static void update_offsets(AVIOContext *pb, int64_t *off, int *len) {
+ int64_t new_off = avio_tell(pb);
+ (*len) -= new_off - *off;
+ *off = new_off;
+}
+
+static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
+ int target_tag);
+
+static int parse_mp4_descr_arr(MP4DescrParseContext *d, int64_t off, int len)
+{
+ while (len > 0) {
+ if (parse_mp4_descr(d, off, len, 0) < 0)
+ return -1;
+ update_offsets(&d->pb, &off, &len);
+ }
+ return 0;
+}
+
+static int parse_MP4IODescrTag(MP4DescrParseContext *d, int64_t off, int len)
+{
+ avio_rb16(&d->pb); // ID
+ avio_r8(&d->pb);
+ avio_r8(&d->pb);
+ avio_r8(&d->pb);
+ avio_r8(&d->pb);
+ avio_r8(&d->pb);
+ update_offsets(&d->pb, &off, &len);
+ return parse_mp4_descr_arr(d, off, len);
+}
+
+static int parse_MP4ODescrTag(MP4DescrParseContext *d, int64_t off, int len)
+{
+ int id_flags;
+ if (len < 2)
+ return 0;
+ id_flags = avio_rb16(&d->pb);
+ if (!(id_flags & 0x0020)) { //URL_Flag
+ update_offsets(&d->pb, &off, &len);
+ return parse_mp4_descr_arr(d, off, len); //ES_Descriptor[]
+ } else {
+ return 0;
+ }
+}
+
+static int parse_MP4ESDescrTag(MP4DescrParseContext *d, int64_t off, int len)
+{
+ int es_id = 0;
+ if (d->descr_count >= d->max_descr_count)
+ return -1;
+ ff_mp4_parse_es_descr(&d->pb, &es_id);
+ d->active_descr = d->descr + (d->descr_count++);
+
+ d->active_descr->es_id = es_id;
+ update_offsets(&d->pb, &off, &len);
+ parse_mp4_descr(d, off, len, MP4DecConfigDescrTag);
+ update_offsets(&d->pb, &off, &len);
+ if (len > 0)
+ parse_mp4_descr(d, off, len, MP4SLDescrTag);
+ d->active_descr = NULL;
+ return 0;
+}
+
+static int parse_MP4DecConfigDescrTag(MP4DescrParseContext *d, int64_t off, int len)
+{
+ Mp4Descr *descr = d->active_descr;
+ if (!descr)
+ return -1;
+ d->active_descr->dec_config_descr = av_malloc(len);
+ if (!descr->dec_config_descr)
+ return AVERROR(ENOMEM);
+ descr->dec_config_descr_len = len;
+ avio_read(&d->pb, descr->dec_config_descr, len);
+ return 0;
+}
+
+static int parse_MP4SLDescrTag(MP4DescrParseContext *d, int64_t off, int len)
{
- ByteIOContext pb;
+ Mp4Descr *descr = d->active_descr;
+ int predefined;
+ if (!descr)
+ return -1;
+
+ predefined = avio_r8(&d->pb);
+ if (!predefined) {
+ int lengths;
+ int flags = avio_r8(&d->pb);
+ descr->sl.use_au_start = !!(flags & 0x80);
+ descr->sl.use_au_end = !!(flags & 0x40);
+ descr->sl.use_rand_acc_pt = !!(flags & 0x20);
+ descr->sl.use_padding = !!(flags & 0x08);
+ descr->sl.use_timestamps = !!(flags & 0x04);
+ descr->sl.use_idle = !!(flags & 0x02);
+ descr->sl.timestamp_res = avio_rb32(&d->pb);
+ avio_rb32(&d->pb);
+ descr->sl.timestamp_len = avio_r8(&d->pb);
+ descr->sl.ocr_len = avio_r8(&d->pb);
+ descr->sl.au_len = avio_r8(&d->pb);
+ descr->sl.inst_bitrate_len = avio_r8(&d->pb);
+ lengths = avio_rb16(&d->pb);
+ descr->sl.degr_prior_len = lengths >> 12;
+ descr->sl.au_seq_num_len = (lengths >> 7) & 0x1f;
+ descr->sl.packet_seq_num_len = (lengths >> 2) & 0x1f;
+ } else {
+ av_log_missing_feature(d->s, "Predefined SLConfigDescriptor\n", 0);
+ }
+ return 0;
+}
+
+static int parse_mp4_descr(MP4DescrParseContext *d, int64_t off, int len,
+ int target_tag) {
int tag;
- unsigned len;
-
- init_put_byte(&pb, buf, size, 0, NULL, NULL, NULL, NULL);
-
- len = ff_mp4_read_descr(s, &pb, &tag);
- if (tag == MP4IODescrTag) {
- get_be16(&pb); // ID
- get_byte(&pb);
- get_byte(&pb);
- get_byte(&pb);
- get_byte(&pb);
- get_byte(&pb);
- len = ff_mp4_read_descr(s, &pb, &tag);
- if (tag == MP4ESDescrTag) {
- *es_id = get_be16(&pb); /* ES_ID */
- av_dlog(s, "ES_ID %#x\n", *es_id);
- get_byte(&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;
- get_buffer(&pb, *dec_config_descr, len);
+ int len1 = ff_mp4_read_descr(d->s, &d->pb, &tag);
+ update_offsets(&d->pb, &off, &len);
+ if (len < 0 || len1 > len || len1 <= 0) {
+ av_log(d->s, AV_LOG_ERROR, "Tag %x length violation new length %d bytes remaining %d\n", tag, len1, len);
+ return -1;
+ }
+
+ if (d->level++ >= MAX_LEVEL) {
+ av_log(d->s, AV_LOG_ERROR, "Maximum MP4 descriptor level exceeded\n");
+ goto done;
+ }
+
+ if (target_tag && tag != target_tag) {
+ av_log(d->s, AV_LOG_ERROR, "Found tag %x expected %x\n", tag, target_tag);
+ goto done;
+ }
+
+ switch (tag) {
+ case MP4IODescrTag:
+ parse_MP4IODescrTag(d, off, len1);
+ break;
+ case MP4ODescrTag:
+ parse_MP4ODescrTag(d, off, len1);
+ break;
+ case MP4ESDescrTag:
+ parse_MP4ESDescrTag(d, off, len1);
+ break;
+ case MP4DecConfigDescrTag:
+ parse_MP4DecConfigDescrTag(d, off, len1);
+ break;
+ case MP4SLDescrTag:
+ parse_MP4SLDescrTag(d, off, len1);
+ break;
+ }
+
+done:
+ d->level--;
+ avio_seek(&d->pb, off + len1, SEEK_SET);
+ return 0;
+}
+
+static int mp4_read_iods(AVFormatContext *s, const uint8_t *buf, unsigned size,
+ Mp4Descr *descr, int *descr_count, int max_descr_count)
+{
+ MP4DescrParseContext d;
+ if (init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count) < 0)
+ return -1;
+
+ parse_mp4_descr(&d, avio_tell(&d.pb), size, MP4IODescrTag);
+
+ *descr_count = d.descr_count;
+ return 0;
+}
+
+static int mp4_read_od(AVFormatContext *s, const uint8_t *buf, unsigned size,
+ Mp4Descr *descr, int *descr_count, int max_descr_count)
+{
+ MP4DescrParseContext d;
+ if (init_MP4DescrParseContext(&d, s, buf, size, descr, max_descr_count) < 0)
+ return -1;
+
+ parse_mp4_descr_arr(&d, avio_tell(&d.pb), size);
+
+ *descr_count = d.descr_count;
+ return 0;
+}
+
+static void m4sl_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
+{
+ MpegTSContext *ts = filter->u.section_filter.opaque;
+ SectionHeader h;
+ const uint8_t *p, *p_end;
+ AVIOContext pb;
+ Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = {{ 0 }};
+ int mp4_descr_count = 0;
+ int i, pid;
+ AVFormatContext *s = ts->stream;
+
+ p_end = section + section_len - 4;
+ p = section;
+ if (parse_section_header(&h, &p, p_end) < 0)
+ return;
+ if (h.tid != M4OD_TID)
+ return;
+
+ mp4_read_od(s, p, (unsigned)(p_end - p), mp4_descr, &mp4_descr_count, MAX_MP4_DESCR_COUNT);
+
+ for (pid = 0; pid < NB_PID_MAX; pid++) {
+ if (!ts->pids[pid])
+ continue;
+ for (i = 0; i < mp4_descr_count; i++) {
+ PESContext *pes;
+ AVStream *st;
+ if (ts->pids[pid]->es_id != mp4_descr[i].es_id)
+ continue;
+ if (!(ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES)) {
+ av_log(s, AV_LOG_ERROR, "pid %x is not PES\n", pid);
+ continue;
+ }
+ pes = ts->pids[pid]->u.pes_filter.opaque;
+ st = pes->st;
+ if (!st) {
+ continue;
+ }
+
+ pes->sl = mp4_descr[i].sl;
+
+ ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
+ mp4_descr[i].dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
+ ff_mp4_read_dec_config_descr(s, st, &pb);
+ if (st->codec->codec_id == AV_CODEC_ID_AAC &&
+ st->codec->extradata_size > 0)
+ st->need_parsing = 0;
+ if (st->codec->codec_id == AV_CODEC_ID_H264 &&
+ st->codec->extradata_size > 0)
+ st->need_parsing = 0;
+
+ if (st->codec->codec_id <= AV_CODEC_ID_NONE) {
+ } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_AUDIO) {
+ st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
+ } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_SUBTITLE) {
+ st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+ } else if (st->codec->codec_id < AV_CODEC_ID_FIRST_UNKNOWN) {
+ st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
}
}
}
- return 0;
+ for (i = 0; i < mp4_descr_count; i++)
+ av_free(mp4_descr[i].dec_config_descr);
}
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)
+ Mp4Descr *mp4_descr, int mp4_descr_count, int pid,
+ MpegTSContext *ts)
{
const uint8_t *desc_end;
- int desc_len, desc_tag;
- char language[4];
+ int desc_len, desc_tag, desc_es_id;
+ char language[252];
+ int i;
desc_tag = get8(pp, desc_list_end);
if (desc_tag < 0)
av_dlog(fc, "tag: 0x%02x len=%d\n", desc_tag, desc_len);
- if (st->codec->codec_id == CODEC_ID_NONE &&
+ if (st->codec->codec_id == AV_CODEC_ID_NONE &&
stream_type == STREAM_TYPE_PRIVATE_DATA)
mpegts_find_stream_type(st, desc_tag, DESC_types);
switch(desc_tag) {
+ case 0x1E: /* SL descriptor */
+ desc_es_id = get16(pp, desc_end);
+ if (ts && ts->pids[pid])
+ ts->pids[pid]->es_id = desc_es_id;
+ for (i = 0; i < mp4_descr_count; i++)
+ if (mp4_descr[i].dec_config_descr_len &&
+ mp4_descr[i].es_id == desc_es_id) {
+ AVIOContext pb;
+ ffio_init_context(&pb, mp4_descr[i].dec_config_descr,
+ mp4_descr[i].dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
+ ff_mp4_read_dec_config_descr(fc, st, &pb);
+ if (st->codec->codec_id == AV_CODEC_ID_AAC &&
+ st->codec->extradata_size > 0)
+ st->need_parsing = 0;
+ if (st->codec->codec_id == AV_CODEC_ID_MPEG4SYSTEMS)
+ mpegts_open_section_filter(ts, pid, m4sl_cb, ts, 1);
+ }
+ break;
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) {
- ByteIOContext pb;
- init_put_byte(&pb, mp4_dec_config_descr,
- mp4_dec_config_descr_len, 0, NULL, NULL, NULL, NULL);
+ if (mp4_descr_count > 0 && st->codec->codec_id == AV_CODEC_ID_AAC_LATM &&
+ mp4_descr->dec_config_descr_len && mp4_descr->es_id == pid) {
+ AVIOContext pb;
+ ffio_init_context(&pb, mp4_descr->dec_config_descr,
+ mp4_descr->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 &&
+ if (st->codec->codec_id == AV_CODEC_ID_AAC &&
st->codec->extradata_size > 0)
st->need_parsing = 0;
}
language[1] = get8(pp, desc_end);
language[2] = get8(pp, desc_end);
language[3] = 0;
- av_metadata_set2(&st->metadata, "language", language, 0);
+ av_dict_set(&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;
- get8(pp, desc_end);
+ /* 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");
}
}
*pp += 4;
- av_metadata_set2(&st->metadata, "language", language, 0);
+ av_dict_set(&st->metadata, "language", language, 0);
break;
case 0x0a: /* ISO 639 language 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);
+ 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_dict_set(&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)
+ if (st->codec->codec_id == AV_CODEC_ID_NONE)
mpegts_find_stream_type(st, st->codec->codec_tag, REGD_types);
break;
default:
int program_info_length, pcr_pid, pid, stream_type;
int desc_list_len;
uint32_t prog_reg_desc = 0; /* registration descriptor */
- uint8_t *mp4_dec_config_descr = NULL;
- int mp4_dec_config_descr_len = 0;
- int mp4_es_id = 0;
-#ifdef DEBUG
+ Mp4Descr mp4_descr[MAX_MP4_DESCR_COUNT] = {{ 0 }};
+ int mp4_descr_count = 0;
+ int i;
+
av_dlog(ts->stream, "PMT: len %i\n", section_len);
- av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
-#endif
+ hex_dump_debug(ts->stream, section, section_len);
p_end = section + section_len - 4;
p = section;
return;
clear_program(ts, h->id);
- pcr_pid = get16(&p, p_end) & 0x1fff;
+ pcr_pid = get16(&p, p_end);
if (pcr_pid < 0)
return;
+ pcr_pid &= 0x1fff;
add_pid_to_pmt(ts, h->id, pcr_pid);
av_dlog(ts->stream, "pcr_pid=0x%x\n", pcr_pid);
- program_info_length = get16(&p, p_end) & 0xfff;
+ program_info_length = get16(&p, p_end);
if (program_info_length < 0)
return;
+ program_info_length &= 0xfff;
while(program_info_length >= 2) {
uint8_t tag, len;
tag = get8(&p, p_end);
get8(&p, p_end); // scope
get8(&p, p_end); // label
len -= 2;
- mp4_read_iods(ts->stream, p, len, &mp4_es_id,
- &mp4_dec_config_descr, &mp4_dec_config_descr_len);
+ mp4_read_iods(ts->stream, p, len, mp4_descr + mp4_descr_count,
+ &mp4_descr_count, MAX_MP4_DESCR_COUNT);
} else if (tag == 0x05 && len >= 4) { // registration descriptor
prog_reg_desc = bytestream_get_le32(&p);
len -= 4;
for(;;) {
st = 0;
+ pes = NULL;
stream_type = get8(&p, p_end);
if (stream_type < 0)
break;
- pid = get16(&p, p_end) & 0x1fff;
+ pid = get16(&p, p_end);
if (pid < 0)
break;
+ pid &= 0x1fff;
- /* now create ffmpeg stream */
+ /* now create stream */
if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
pes = ts->pids[pid]->u.pes_filter.opaque;
- if (!pes->st)
- pes->st = av_new_stream(pes->stream, pes->pid);
+ if (!pes->st) {
+ pes->st = avformat_new_stream(pes->stream, NULL);
+ pes->st->id = pes->pid;
+ }
st = pes->st;
- } else {
+ } else if (stream_type != 0x13) {
if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
pes = add_pes_stream(ts, pid, pcr_pid);
- if (pes)
- st = av_new_stream(pes->stream, pes->pid);
+ if (pes) {
+ st = avformat_new_stream(pes->stream, NULL);
+ st->id = pes->pid;
+ }
+ } else {
+ int idx = ff_find_stream_index(ts->stream, pid);
+ if (idx >= 0) {
+ st = ts->stream->streams[idx];
+ } else {
+ st = avformat_new_stream(ts->stream, NULL);
+ st->id = pid;
+ st->codec->codec_type = AVMEDIA_TYPE_DATA;
+ }
}
if (!st)
goto out;
- if (!pes->stream_type)
+ if (pes && !pes->stream_type)
mpegts_set_stream_info(st, pes, stream_type, prog_reg_desc);
add_pid_to_pmt(ts, h->id, pid);
ff_program_add_stream_index(ts->stream, h->id, st->index);
- desc_list_len = get16(&p, p_end) & 0xfff;
+ desc_list_len = get16(&p, p_end);
if (desc_list_len < 0)
break;
+ desc_list_len &= 0xfff;
desc_list_end = p + desc_list_len;
if (desc_list_end > p_end)
break;
for(;;) {
if (ff_parse_mpeg2_descriptor(ts->stream, st, stream_type, &p, desc_list_end,
- mp4_dec_config_descr_len, mp4_es_id, pid, mp4_dec_config_descr) < 0)
+ mp4_descr, mp4_descr_count, pid, ts) < 0)
break;
- if (prog_reg_desc == AV_RL32("HDMV") && stream_type == 0x83 && pes->sub_st) {
+ if (pes && prog_reg_desc == AV_RL32("HDMV") && stream_type == 0x83 && pes->sub_st) {
ff_program_add_stream_index(ts->stream, h->id, pes->sub_st->index);
pes->sub_st->codec->codec_tag = st->codec->codec_tag;
}
}
out:
- av_free(mp4_dec_config_descr);
+ for (i = 0; i < mp4_descr_count; i++)
+ av_free(mp4_descr[i].dec_config_descr);
}
static void pat_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
const uint8_t *p, *p_end;
int sid, pmt_pid;
-#ifdef DEBUG
av_dlog(ts->stream, "PAT:\n");
- av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
-#endif
+ hex_dump_debug(ts->stream, section, section_len);
+
p_end = section + section_len - 4;
p = section;
if (parse_section_header(h, &p, p_end) < 0)
sid = get16(&p, p_end);
if (sid < 0)
break;
- pmt_pid = get16(&p, p_end) & 0x1fff;
+ pmt_pid = get16(&p, p_end);
if (pmt_pid < 0)
break;
+ pmt_pid &= 0x1fff;
av_dlog(ts->stream, "sid=0x%x pid=0x%x\n", sid, pmt_pid);
int onid, val, sid, desc_list_len, desc_tag, desc_len, service_type;
char *name, *provider_name;
-#ifdef DEBUG
av_dlog(ts->stream, "SDT:\n");
- av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
-#endif
+ hex_dump_debug(ts->stream, section, section_len);
p_end = section + section_len - 4;
p = section;
val = get8(&p, p_end);
if (val < 0)
break;
- desc_list_len = get16(&p, p_end) & 0xfff;
+ desc_list_len = get16(&p, p_end);
if (desc_list_len < 0)
break;
+ desc_list_len &= 0xfff;
desc_list_end = p + desc_list_len;
if (desc_list_end > p_end)
break;
if (name) {
AVProgram *program = av_new_program(ts->stream, sid);
if(program) {
- av_metadata_set2(&program->metadata, "service_name", name, 0);
- av_metadata_set2(&program->metadata, "service_provider", provider_name, 0);
+ av_dict_set(&program->metadata, "service_name", name, 0);
+ av_dict_set(&program->metadata, "service_provider", provider_name, 0);
}
}
av_free(name);
{
AVFormatContext *s = ts->stream;
MpegTSFilter *tss;
- int len, pid, cc, cc_ok, afc, is_start;
+ int len, pid, cc, expected_cc, cc_ok, afc, is_start, is_discontinuity,
+ has_adaptation, has_payload;
const uint8_t *p, *p_end;
int64_t pos;
if (!tss)
return 0;
+ afc = (packet[3] >> 4) & 3;
+ if (afc == 0) /* reserved value */
+ return 0;
+ has_adaptation = afc & 2;
+ has_payload = afc & 1;
+ is_discontinuity = has_adaptation
+ && packet[4] != 0 /* with length > 0 */
+ && (packet[5] & 0x80); /* and discontinuity indicated */
+
/* continuity check (currently not used) */
cc = (packet[3] & 0xf);
- cc_ok = (tss->last_cc < 0) || ((((tss->last_cc + 1) & 0x0f) == cc));
+ expected_cc = has_payload ? (tss->last_cc + 1) & 0x0f : tss->last_cc;
+ cc_ok = pid == 0x1FFF // null packet PID
+ || is_discontinuity
+ || tss->last_cc < 0
+ || expected_cc == cc;
+
tss->last_cc = cc;
+ if (!cc_ok) {
+ av_log(ts->stream, AV_LOG_WARNING,
+ "Continuity check failed for pid %d expected %d got %d\n",
+ pid, expected_cc, cc);
+ if(tss->type == MPEGTS_PES) {
+ PESContext *pc = tss->u.pes_filter.opaque;
+ pc->flags |= AV_PKT_FLAG_CORRUPT;
+ }
+ }
- /* skip adaptation field */
- afc = (packet[3] >> 4) & 3;
- p = packet + 4;
- if (afc == 0) /* reserved value */
- return 0;
- if (afc == 2) /* adaptation field only */
+ if (!has_payload)
return 0;
- if (afc == 3) {
- /* skip adapation field */
+ p = packet + 4;
+ if (has_adaptation) {
+ /* skip adaptation field */
p += p[0] + 1;
}
/* if past the end of packet, ignore */
if (p >= p_end)
return 0;
- pos = url_ftell(ts->stream->pb);
+ pos = avio_tell(ts->stream->pb);
ts->pos47= pos % ts->raw_packet_size;
if (tss->type == MPEGTS_SECTION) {
get_packet_size() ?) */
static int mpegts_resync(AVFormatContext *s)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
int c, i;
for(i = 0;i < MAX_RESYNC_SIZE; i++) {
- c = url_fgetc(pb);
- if (c < 0)
+ c = avio_r8(pb);
+ if (pb->eof_reached)
return -1;
if (c == 0x47) {
- url_fseek(pb, -1, SEEK_CUR);
+ avio_seek(pb, -1, SEEK_CUR);
return 0;
}
}
/* return -1 if error or EOF. Return 0 if OK. */
static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size)
{
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
int skip, len;
for(;;) {
- len = get_buffer(pb, buf, TS_PACKET_SIZE);
+ len = avio_read(pb, buf, TS_PACKET_SIZE);
if (len != TS_PACKET_SIZE)
- return AVERROR(EIO);
- /* check paquet sync byte */
+ return len < 0 ? len : AVERROR_EOF;
+ /* check packet sync byte */
if (buf[0] != 0x47) {
/* find a new packet start */
- url_fseek(pb, -TS_PACKET_SIZE, SEEK_CUR);
+ avio_seek(pb, -TS_PACKET_SIZE, SEEK_CUR);
if (mpegts_resync(s) < 0)
return AVERROR(EAGAIN);
else
} else {
skip = raw_packet_size - TS_PACKET_SIZE;
if (skip > 0)
- url_fskip(pb, skip);
+ avio_skip(pb, skip);
break;
}
}
static int handle_packets(MpegTSContext *ts, int nb_packets)
{
AVFormatContext *s = ts->stream;
- uint8_t packet[TS_PACKET_SIZE];
- int packet_num, ret;
+ uint8_t packet[TS_PACKET_SIZE+FF_INPUT_BUFFER_PADDING_SIZE];
+ int packet_num, ret = 0;
+
+ if (avio_tell(s->pb) != ts->last_pos) {
+ int i;
+ av_dlog(ts->stream, "Skipping after seek\n");
+ /* seek detected, flush pes buffer */
+ for (i = 0; i < NB_PID_MAX; i++) {
+ if (ts->pids[i]) {
+ if (ts->pids[i]->type == MPEGTS_PES) {
+ PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
+ av_freep(&pes->buffer);
+ pes->data_index = 0;
+ pes->state = MPEGTS_SKIP; /* skip until pes header */
+ }
+ ts->pids[i]->last_cc = -1;
+ }
+ }
+ }
ts->stop_parse = 0;
packet_num = 0;
+ memset(packet + TS_PACKET_SIZE, 0, FF_INPUT_BUFFER_PADDING_SIZE);
for(;;) {
if (ts->stop_parse>0)
break;
break;
ret = read_packet(s, packet, ts->raw_packet_size);
if (ret != 0)
- return ret;
+ break;
ret = handle_packet(ts, packet);
if (ret != 0)
- return ret;
+ break;
}
- return 0;
+ ts->last_pos = avio_tell(s->pb);
+ return ret;
}
static int mpegts_probe(AVProbeData *p)
{
-#if 1
const int size= p->buf_size;
int score, fec_score, dvhs_score;
int check_count= size / TS_FEC_PACKET_SIZE;
score = analyze(p->buf, TS_PACKET_SIZE *check_count, TS_PACKET_SIZE , NULL)*CHECK_COUNT/check_count;
dvhs_score= analyze(p->buf, TS_DVHS_PACKET_SIZE*check_count, TS_DVHS_PACKET_SIZE, NULL)*CHECK_COUNT/check_count;
fec_score = analyze(p->buf, TS_FEC_PACKET_SIZE *check_count, TS_FEC_PACKET_SIZE , NULL)*CHECK_COUNT/check_count;
-// av_log(NULL, AV_LOG_DEBUG, "score: %d, dvhs_score: %d, fec_score: %d \n", score, dvhs_score, fec_score);
+ av_dlog(NULL, "score: %d, dvhs_score: %d, fec_score: %d \n",
+ score, dvhs_score, fec_score);
// we need a clear definition for the returned score otherwise things will become messy sooner or later
if (score > fec_score && score > dvhs_score && score > 6) return AVPROBE_SCORE_MAX + score - CHECK_COUNT;
else if(dvhs_score > score && dvhs_score > fec_score && dvhs_score > 6) return AVPROBE_SCORE_MAX + dvhs_score - CHECK_COUNT;
else if( fec_score > 6) return AVPROBE_SCORE_MAX + fec_score - CHECK_COUNT;
else return -1;
-#else
- /* only use the extension for safer guess */
- if (av_match_ext(p->filename, "ts"))
- return AVPROBE_SCORE_MAX;
- else
- return 0;
-#endif
}
/* return the 90kHz PCR and the extension for the 27MHz PCR. return
return 0;
}
-static int mpegts_read_header(AVFormatContext *s,
- AVFormatParameters *ap)
+static int mpegts_read_header(AVFormatContext *s)
{
MpegTSContext *ts = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
uint8_t buf[5*1024];
int len;
int64_t pos;
- if (ap) {
- ts->mpeg2ts_compute_pcr = ap->mpeg2ts_compute_pcr;
- if(ap->mpeg2ts_raw){
- av_log(s, AV_LOG_ERROR, "use mpegtsraw_demuxer!\n");
- return -1;
- }
- }
-
/* read the first 1024 bytes to get packet size */
- pos = url_ftell(pb);
- len = get_buffer(pb, buf, sizeof(buf));
+ pos = avio_tell(pb);
+ len = avio_read(pb, buf, sizeof(buf));
if (len != sizeof(buf))
goto fail;
ts->raw_packet_size = get_packet_size(buf, sizeof(buf));
if (s->iformat == &ff_mpegts_demuxer) {
/* normal demux */
- /* first do a scaning to get all the services */
- if (url_fseek(pb, pos, SEEK_SET) < 0)
+ /* first do a scan to get all the services */
+ if (avio_seek(pb, pos, SEEK_SET) < 0 && pb->seekable)
av_log(s, AV_LOG_ERROR, "Unable to seek back to the start\n");
mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);
/* only read packets */
- st = av_new_stream(s, 0);
+ st = avformat_new_stream(s, NULL);
if (!st)
goto fail;
- av_set_pts_info(st, 60, 1, 27000000);
+ avpriv_set_pts_info(st, 60, 1, 27000000);
st->codec->codec_type = AVMEDIA_TYPE_DATA;
- st->codec->codec_id = CODEC_ID_MPEG2TS;
+ st->codec->codec_id = AV_CODEC_ID_MPEG2TS;
/* we iterate until we find two PCRs to estimate the bitrate */
pcr_pid = -1;
s->bit_rate = (TS_PACKET_SIZE * 8) * 27e6 / ts->pcr_incr;
st->codec->bit_rate = s->bit_rate;
st->start_time = ts->cur_pcr;
-#if 0
- av_log(ts->stream, AV_LOG_DEBUG, "start=%0.3f pcr=%0.3f incr=%d\n",
- st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
-#endif
+ av_dlog(ts->stream, "start=%0.3f pcr=%0.3f incr=%d\n",
+ st->start_time / 1000000.0, pcrs[0] / 27e6, ts->pcr_incr);
}
- url_fseek(pb, pos, SEEK_SET);
+ avio_seek(pb, pos, SEEK_SET);
return 0;
fail:
return -1;
if (av_new_packet(pkt, TS_PACKET_SIZE) < 0)
return AVERROR(ENOMEM);
- pkt->pos= url_ftell(s->pb);
+ pkt->pos= avio_tell(s->pb);
ret = read_packet(s, pkt->data, ts->raw_packet_size);
if (ret < 0) {
av_free_packet(pkt);
/* compute exact PCR for each packet */
if (parse_pcr(&pcr_h, &pcr_l, pkt->data) == 0) {
/* we read the next PCR (XXX: optimize it by using a bigger buffer */
- pos = url_ftell(s->pb);
+ pos = avio_tell(s->pb);
for(i = 0; i < MAX_PACKET_READAHEAD; i++) {
- url_fseek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
- get_buffer(s->pb, pcr_buf, 12);
+ avio_seek(s->pb, pos + i * ts->raw_packet_size, SEEK_SET);
+ avio_read(s->pb, pcr_buf, 12);
if (parse_pcr(&next_pcr_h, &next_pcr_l, pcr_buf) == 0) {
/* XXX: not precise enough */
ts->pcr_incr = ((next_pcr_h - pcr_h) * 300 + (next_pcr_l - pcr_l)) /
break;
}
}
- url_fseek(s->pb, pos, SEEK_SET);
+ avio_seek(s->pb, pos, SEEK_SET);
/* no next PCR found: we use previous increment */
ts->cur_pcr = pcr_h * 300 + pcr_l;
}
MpegTSContext *ts = s->priv_data;
int ret, i;
- if (url_ftell(s->pb) != ts->last_pos) {
- /* seek detected, flush pes buffer */
- for (i = 0; i < NB_PID_MAX; i++) {
- if (ts->pids[i] && ts->pids[i]->type == MPEGTS_PES) {
- PESContext *pes = ts->pids[i]->u.pes_filter.opaque;
- av_freep(&pes->buffer);
- pes->data_index = 0;
- pes->state = MPEGTS_SKIP; /* skip until pes header */
- }
- }
- }
-
+ pkt->size = -1;
ts->pkt = pkt;
ret = handle_packets(ts, 0);
if (ret < 0) {
}
}
- ts->last_pos = url_ftell(s->pb);
-
+ if (!ret && pkt->size < 0)
+ ret = AVERROR(EINTR);
return ret;
}
-static int mpegts_read_close(AVFormatContext *s)
+static void mpegts_free(MpegTSContext *ts)
{
- MpegTSContext *ts = s->priv_data;
int i;
clear_programs(ts);
for(i=0;i<NB_PID_MAX;i++)
if (ts->pids[i]) mpegts_close_filter(ts, ts->pids[i]);
+}
+static int mpegts_read_close(AVFormatContext *s)
+{
+ MpegTSContext *ts = s->priv_data;
+ mpegts_free(ts);
return 0;
}
pos = ((*ppos + ts->raw_packet_size - 1 - ts->pos47) / ts->raw_packet_size) * ts->raw_packet_size + ts->pos47;
if (find_next) {
for(;;) {
- url_fseek(s->pb, pos, SEEK_SET);
- if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
+ avio_seek(s->pb, pos, SEEK_SET);
+ if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
return AV_NOPTS_VALUE;
if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
parse_pcr(×tamp, &pcr_l, buf) == 0) {
pos -= ts->raw_packet_size;
if (pos < 0)
return AV_NOPTS_VALUE;
- url_fseek(s->pb, pos, SEEK_SET);
- if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
+ avio_seek(s->pb, pos, SEEK_SET);
+ if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
return AV_NOPTS_VALUE;
if ((pcr_pid < 0 || (AV_RB16(buf + 1) & 0x1fff) == pcr_pid) &&
parse_pcr(×tamp, &pcr_l, buf) == 0) {
return timestamp;
}
-#ifdef USE_SYNCPOINT_SEARCH
-
-static int read_seek2(AVFormatContext *s,
- int stream_index,
- int64_t min_ts,
- int64_t target_ts,
- int64_t max_ts,
- int flags)
-{
- int64_t pos;
-
- int64_t ts_ret, ts_adj;
- int stream_index_gen_search;
- AVStream *st;
- AVParserState *backup;
-
- backup = ff_store_parser_state(s);
-
- // detect direction of seeking for search purposes
- flags |= (target_ts - min_ts > (uint64_t)(max_ts - target_ts)) ?
- AVSEEK_FLAG_BACKWARD : 0;
-
- if (flags & AVSEEK_FLAG_BYTE) {
- // use position directly, we will search starting from it
- pos = target_ts;
- } else {
- // search for some position with good timestamp match
- if (stream_index < 0) {
- stream_index_gen_search = av_find_default_stream_index(s);
- if (stream_index_gen_search < 0) {
- ff_restore_parser_state(s, backup);
- return -1;
- }
-
- st = s->streams[stream_index_gen_search];
- // timestamp for default must be expressed in AV_TIME_BASE units
- ts_adj = av_rescale(target_ts,
- st->time_base.den,
- AV_TIME_BASE * (int64_t)st->time_base.num);
- } else {
- ts_adj = target_ts;
- stream_index_gen_search = stream_index;
- }
- pos = av_gen_search(s, stream_index_gen_search, ts_adj,
- 0, INT64_MAX, -1,
- AV_NOPTS_VALUE,
- AV_NOPTS_VALUE,
- flags, &ts_ret, mpegts_get_pcr);
- if (pos < 0) {
- ff_restore_parser_state(s, backup);
- return -1;
- }
- }
-
- // search for actual matching keyframe/starting position for all streams
- if (ff_gen_syncpoint_search(s, stream_index, pos,
- min_ts, target_ts, max_ts,
- flags) < 0) {
- ff_restore_parser_state(s, backup);
- return -1;
- }
-
- ff_free_parser_state(s, backup);
- return 0;
-}
-
-static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
-{
- int ret;
- if (flags & AVSEEK_FLAG_BACKWARD) {
- flags &= ~AVSEEK_FLAG_BACKWARD;
- ret = read_seek2(s, stream_index, INT64_MIN, target_ts, target_ts, flags);
- if (ret < 0)
- // for compatibility reasons, seek to the best-fitting timestamp
- ret = read_seek2(s, stream_index, INT64_MIN, target_ts, INT64_MAX, flags);
- } else {
- ret = read_seek2(s, stream_index, target_ts, target_ts, INT64_MAX, flags);
- if (ret < 0)
- // for compatibility reasons, seek to the best-fitting timestamp
- ret = read_seek2(s, stream_index, INT64_MIN, target_ts, INT64_MAX, flags);
- }
- return ret;
-}
-
-#else
-
static int read_seek(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
MpegTSContext *ts = s->priv_data;
uint8_t buf[TS_PACKET_SIZE];
int64_t pos;
- if(av_seek_frame_binary(s, stream_index, target_ts, flags) < 0)
+ if (ff_seek_frame_binary(s, stream_index, target_ts, flags) < 0)
return -1;
- pos= url_ftell(s->pb);
+ pos= avio_tell(s->pb);
for(;;) {
- url_fseek(s->pb, pos, SEEK_SET);
- if (get_buffer(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
+ avio_seek(s->pb, pos, SEEK_SET);
+ if (avio_read(s->pb, buf, TS_PACKET_SIZE) != TS_PACKET_SIZE)
return -1;
// pid = AV_RB16(buf + 1) & 0x1fff;
if(buf[1] & 0x40) break;
pos += ts->raw_packet_size;
}
- url_fseek(s->pb, pos, SEEK_SET);
+ avio_seek(s->pb, pos, SEEK_SET);
return 0;
}
-#endif
-
/**************************************************************/
/* parsing functions - called from other demuxers such as RTP */
void ff_mpegts_parse_close(MpegTSContext *ts)
{
- int i;
-
- for(i=0;i<NB_PID_MAX;i++)
- av_free(ts->pids[i]);
+ mpegts_free(ts);
av_free(ts);
}
AVInputFormat ff_mpegts_demuxer = {
- "mpegts",
- NULL_IF_CONFIG_SMALL("MPEG-2 transport stream format"),
- sizeof(MpegTSContext),
- mpegts_probe,
- mpegts_read_header,
- mpegts_read_packet,
- mpegts_read_close,
- read_seek,
- mpegts_get_pcr,
- .flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
-#ifdef USE_SYNCPOINT_SEARCH
- .read_seek2 = read_seek2,
-#endif
+ .name = "mpegts",
+ .long_name = NULL_IF_CONFIG_SMALL("MPEG-TS (MPEG-2 Transport Stream)"),
+ .priv_data_size = sizeof(MpegTSContext),
+ .read_probe = mpegts_probe,
+ .read_header = mpegts_read_header,
+ .read_packet = mpegts_read_packet,
+ .read_close = mpegts_read_close,
+ .read_seek = read_seek,
+ .read_timestamp = mpegts_get_pcr,
+ .flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
};
AVInputFormat ff_mpegtsraw_demuxer = {
- "mpegtsraw",
- NULL_IF_CONFIG_SMALL("MPEG-2 raw transport stream format"),
- sizeof(MpegTSContext),
- NULL,
- mpegts_read_header,
- mpegts_raw_read_packet,
- mpegts_read_close,
- read_seek,
- mpegts_get_pcr,
- .flags = AVFMT_SHOW_IDS|AVFMT_TS_DISCONT,
-#ifdef USE_SYNCPOINT_SEARCH
- .read_seek2 = read_seek2,
-#endif
+ .name = "mpegtsraw",
+ .long_name = NULL_IF_CONFIG_SMALL("raw MPEG-TS (MPEG-2 Transport Stream)"),
+ .priv_data_size = sizeof(MpegTSContext),
+ .read_header = mpegts_read_header,
+ .read_packet = mpegts_raw_read_packet,
+ .read_close = mpegts_read_close,
+ .read_seek = read_seek,
+ .read_timestamp = mpegts_get_pcr,
+ .flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
+ .priv_class = &mpegtsraw_class,
};
projects / ffmpeg / blobdiff