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qtdemux: handle fragmented files with mdat before moofs

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Assume a file with atoms in the following order: moov, mdat, moof,
mdat, moof ...

The first moov usually doesn't contain any sample entries atoms (or
they are all set to 0 length), because the real samples are signaled
at the moofs. In push mode, qtdemux parses the moov and then finds the mdat,
but then it has 0 entries and assumes it is EOS.

This patch makes it continue parsing in case it is a fragmented file so that
it might find the moofs and play the media.

https://bugzilla.gnome.org/show_bug.cgi?id=710623
This commit is contained in:
Thiago Santos 2013-10-25 18:22:00 -03:00
parent 0e78ffc9d6
commit 33ebda8ecf
1 changed files with 5 additions and 3 deletions
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8
gst/isomp4/qtdemux.c
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@ -4608,10 +4608,11 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
break;
}
if (fourcc == FOURCC_mdat) {
if (demux->n_streams > 0) {
gint next_entry = next_entry_size (demux);
if (demux->n_streams > 0 && (next_entry != -1 || !demux->fragmented)) {
/* we have the headers, start playback */
demux->state = QTDEMUX_STATE_MOVIE;
demux->neededbytes = next_entry_size (demux);
demux->neededbytes = next_entry;
demux->mdatleft = size;
} else {
/* no headers yet, try to get them */
@ -4675,7 +4676,8 @@ gst_qtdemux_chain (GstPad * sinkpad, GstObject * parent, GstBuffer * inbuf)
} else {
/* this means we already started buffering and still no moov header,
* let's continue buffering everything till we get moov */
if (demux->mdatbuffer && (fourcc != FOURCC_moov))
if (demux->mdatbuffer && !(fourcc == FOURCC_moov
|| fourcc == FOURCC_moof))
goto buffer_data;
demux->neededbytes = size;
demux->state = QTDEMUX_STATE_HEADER;