virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-08-10 06:10:52 +02:00
Code Issues Releases Activity

mpegts: Allow custom max resync size

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

24
libavformat/mpegts.c
View File

@@ -126,6 +126,8 @@ struct MpegTSContext {
/** to detect seek */ /** to detect seek */
int64_t last_pos; int64_t last_pos;
int resync_size;
/******************************************/ /******************************************/
/* private mpegts data */ /* private mpegts data */
/* scan context */ /* scan context */
@@ -137,7 +139,23 @@ struct MpegTSContext {
MpegTSFilter *pids[NB_PID_MAX]; 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[] = { 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.", { "compute_pcr", "Compute exact PCR for each transport stream packet.",
offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT, offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM }, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
@@ -151,7 +169,7 @@ static const AVOption options[] = {
static const AVClass mpegtsraw_class = { static const AVClass mpegtsraw_class = {
.class_name = "mpegtsraw demuxer", .class_name = "mpegtsraw demuxer",
.item_name = av_default_item_name, .item_name = av_default_item_name,
.option = options, .option = raw_options,
.version = LIBAVUTIL_VERSION_INT, .version = LIBAVUTIL_VERSION_INT,
}; };
@@ -1805,10 +1823,11 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
* get_packet_size() ?) */ * get_packet_size() ?) */
static int mpegts_resync(AVFormatContext *s) static int mpegts_resync(AVFormatContext *s)
{ {
MpegTSContext *ts = s->priv_data;
AVIOContext *pb = s->pb; AVIOContext *pb = s->pb;
int c, i; int c, i;
for (i = 0; i < MAX_RESYNC_SIZE; i++) { for (i = 0; i < ts->resync_size; i++) {
c = avio_r8(pb); c = avio_r8(pb);
if (pb->eof_reached) if (pb->eof_reached)
return AVERROR_EOF; return AVERROR_EOF;
@@ -2285,6 +2304,7 @@ AVInputFormat ff_mpegts_demuxer = {
.read_seek = read_seek, .read_seek = read_seek,
.read_timestamp = mpegts_get_pcr, .read_timestamp = mpegts_get_pcr,
.flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT, .flags = AVFMT_SHOW_IDS | AVFMT_TS_DISCONT,
.priv_class = &mpegts_class,
}; };
AVInputFormat ff_mpegtsraw_demuxer = { AVInputFormat ff_mpegtsraw_demuxer = {