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mpegts: Allow custom max resync size

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This commit is contained in:
Luca Barbato 2014-08-25 12:11:32 +02:00
parent 94f084324e
commit 7968059e5c
1 changed files with 22 additions and 2 deletions
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24
libavformat/mpegts.c
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@ -126,6 +126,8 @@ struct MpegTSContext {
/** to detect seek */
int64_t last_pos;
int resync_size;
/******************************************/
/* private mpegts data */
/* scan context */
@ -137,7 +139,23 @@ struct MpegTSContext {
MpegTSFilter *pids[NB_PID_MAX];
};
#define MPEGTS_OPTIONS \
{ "resync_size", "Size limit for looking up a new syncronization.", offsetof(MpegTSContext, resync_size), AV_OPT_TYPE_INT, { .i64 = MAX_RESYNC_SIZE}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }
static const AVOption options[] = {
MPEGTS_OPTIONS,
{ NULL },
};
static const AVClass mpegts_class = {
.class_name = "mpegts demuxer",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVOption raw_options[] = {
MPEGTS_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 },
@ -151,7 +169,7 @@ static const AVOption options[] = {
static const AVClass mpegtsraw_class = {
.class_name = "mpegtsraw demuxer",
.item_name = av_default_item_name,
.option = options,
.option = raw_options,
.version = LIBAVUTIL_VERSION_INT,
};
@ -1805,10 +1823,11 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
* get_packet_size() ?) */
static int mpegts_resync(AVFormatContext *s)
{
MpegTSContext *ts = s->priv_data;
AVIOContext *pb = s->pb;
int c, i;
for (i = 0; i < MAX_RESYNC_SIZE; i++) {
for (i = 0; i < ts->resync_size; i++) {
c = avio_r8(pb);
if (pb->eof_reached)
return AVERROR_EOF;
@ -2285,6 +2304,7 @@ AVInputFormat ff_mpegts_demuxer = {
.read_seek = read_seek,
.read_timestamp = mpegts_get_pcr,
.flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
.priv_class = &mpegts_class,
};
AVInputFormat ff_mpegtsraw_demuxer = {