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avformat/oggenc: Check segments_count for headers too 

Fixes infinite loop and segfault in ogg_buffer_data()
Fixes Ticket4806

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 81a8701eb5)
This commit is contained in:
Michael Niedermayer 2015-08-27 04:08:42 +02:00 committed by Carl Eugen Hoyos
parent f3dfb14f6c
commit 01fa1dc229
1 changed files with 7 additions and 4 deletions
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11
libavformat/oggenc.c
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@ -255,7 +255,7 @@ static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
if (i == total_segments)
page->granule = granule;
if (!header) {
{
AVStream *st = s->streams[page->stream_index];
int64_t start = av_rescale_q(page->start_granule, st->time_base,
@ -263,10 +263,13 @@ static int ogg_buffer_data(AVFormatContext *s, AVStream *st,
int64_t next = av_rescale_q(page->granule, st->time_base,
AV_TIME_BASE_Q);
if (page->segments_count == 255 ||
(ogg->pref_size > 0 && page->size >= ogg->pref_size) ||
(ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
if (page->segments_count == 255) {
ogg_buffer_page(s, oggstream);
} else if (!header) {
if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) ||
(ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
ogg_buffer_page(s, oggstream);
}
}
}
}