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ffmdec: set avio buffer to ffm->packet_size, avoid dirty reads

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Yan Jing 2011-09-08 20:23:13 +02:00 committed by Michael Niedermayer
parent 0b99e858d1
commit 8ba987bff3
1 changed files with 5 additions and 0 deletions
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5
libavformat/ffmdec.c
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@ -121,6 +121,11 @@ static int ffm_read_data(AVFormatContext *s,
if (avio_tell(pb) == ffm->file_size) if (avio_tell(pb) == ffm->file_size)
avio_seek(pb, ffm->packet_size, SEEK_SET); avio_seek(pb, ffm->packet_size, SEEK_SET);
retry_read: retry_read:
if (pb->buffer_size != ffm->packet_size) {
int64_t tell = avio_tell(pb);
url_setbufsize(pb, ffm->packet_size);
avio_seek(pb, tell, SEEK_SET);
}
id = avio_rb16(pb); /* PACKET_ID */ id = avio_rb16(pb); /* PACKET_ID */
if (id != PACKET_ID) if (id != PACKET_ID)
if (ffm_resync(s, id) < 0) if (ffm_resync(s, id) < 0)