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Patch get_frag_time

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This commit is contained in:
Ali 2023-09-22 18:45:26 +04:00
parent 1c1dd8f972
commit f94c1a8461
1 changed files with 35 additions and 26 deletions
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61
submodules/ffmpeg/Sources/FFMpeg/ffmpeg-4.1/libavformat/mov.c
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@ -1246,55 +1246,64 @@ static int64_t get_stream_info_time(MOVFragmentStreamInfo * frag_stream_info)
return AV_NOPTS_VALUE;
}
static int64_t get_frag_time(MOVFragmentIndex *frag_index,
int index, int track_id)
static int64_t get_frag_time(AVFormatContext *s, AVStream *dst_st,
MOVFragmentIndex *frag_index, int index)
{
MOVFragmentStreamInfo * frag_stream_info;
MOVStreamContext *sc = dst_st->priv_data;
int64_t timestamp;
int i;
int i, j;
if (track_id >= 0) {
frag_stream_info = get_frag_stream_info(frag_index, index, track_id);
// If the stream is referenced by any sidx, limit the search
// to fragments that referenced this stream in the sidx
if (sc->has_sidx) {
frag_stream_info = get_frag_stream_info(frag_index, index, dst_st->id);
if (frag_stream_info->sidx_pts != AV_NOPTS_VALUE)
return frag_stream_info->sidx_pts;
if (frag_stream_info->first_tfra_pts != AV_NOPTS_VALUE)
return frag_stream_info->first_tfra_pts;
return frag_stream_info->sidx_pts;
}
for (i = 0; i < frag_index->item[index].nb_stream_info; i++) {
AVStream *frag_stream = NULL;
frag_stream_info = &frag_index->item[index].stream_info[i];
for (j = 0; j < s->nb_streams; j++)
if (s->streams[j]->id == frag_stream_info->id)
frag_stream = s->streams[j];
if (!frag_stream) {
av_log(s, AV_LOG_WARNING, "No stream matching sidx ID found.\n");
continue;
}
timestamp = get_stream_info_time(frag_stream_info);
if (timestamp != AV_NOPTS_VALUE)
return timestamp;
return av_rescale_q(timestamp, frag_stream->time_base, dst_st->time_base);
}
return AV_NOPTS_VALUE;
}
static int search_frag_timestamp(MOVFragmentIndex *frag_index,
static int search_frag_timestamp(AVFormatContext *s, MOVFragmentIndex *frag_index,
AVStream *st, int64_t timestamp)
{
int a, b, m;
int a, b, m, m0;
int64_t frag_time;
int id = -1;
if (st) {
// If the stream is referenced by any sidx, limit the search
// to fragments that referenced this stream in the sidx
MOVStreamContext *sc = st->priv_data;
if (sc->has_sidx)
id = st->id;
}
a = -1;
b = frag_index->nb_items;
while (b - a > 1) {
m = (a + b) >> 1;
frag_time = get_frag_time(frag_index, m, id);
if (frag_time != AV_NOPTS_VALUE) {
if (frag_time >= timestamp)
b = m;
if (frag_time <= timestamp)
a = m;
}
m0 = m = (a + b) >> 1;
while (m < b &&
(frag_time = get_frag_time(s, st, frag_index, m)) == AV_NOPTS_VALUE)
m++;
if (m < b && frag_time <= timestamp)
a = m;
else
b = m0;
}
return a;
}
@ -7829,7 +7838,7 @@ static int mov_seek_fragment(AVFormatContext *s, AVStream *st, int64_t timestamp
if (!mov->frag_index.complete)
return 0;
index = search_frag_timestamp(&mov->frag_index, st, timestamp);
index = search_frag_timestamp(s, &mov->frag_index, st, timestamp);
if (index < 0)
index = 0;
if (!mov->frag_index.item[index].headers_read)