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qtdemux: cenc aux info parsing from mdat support in PULL mode

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This is already supported for PUSH mode but was failing in PULL mode.
The aux info is sometimes stored in the mdat before the first sample,
so the loop task needs to pull data stored at that location and
perform the aux info cenc parsing.

https://bugzilla.gnome.org/show_bug.cgi?id=761700

https://bugzilla.gnome.org/show_bug.cgi?id=762516
This commit is contained in:
Philippe Normand 2016-02-25 11:33:13 +01:00 committed by Sebastian Dröge
parent 67f3fc1748
commit 9c47c0da59
1 changed files with 25 additions and 1 deletions
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26
gst/isomp4/qtdemux.c
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@ -3458,7 +3458,7 @@ qtdemux_parse_moof (GstQTDemux * qtdemux, const guint8 * buffer, guint length,
qtdemux->cenc_aux_info_sizes = NULL;
goto fail;
}
if (base_offset > qtdemux->moof_offset)
if (base_offset > -1 && base_offset > qtdemux->moof_offset)
offset += (guint64) (base_offset - qtdemux->moof_offset);
if (info_type == FOURCC_cenc && info_type_parameter == 0U) {
GstByteReader br;
@ -5220,6 +5220,30 @@ gst_qtdemux_loop_state_movie (GstQTDemux * qtdemux)
MIN (sample_size - stream->offset_in_sample, stream->max_buffer_size);
}
if (qtdemux->cenc_aux_info_offset > 0) {
GstMapInfo map;
GstByteReader br;
GstBuffer* aux_info = NULL;
/* pull the data stored before the sample */
ret = gst_qtdemux_pull_atom (qtdemux, qtdemux->offset, offset + stream->offset_in_sample - qtdemux->offset, &aux_info);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto beach;
gst_buffer_map(aux_info, &map, GST_MAP_READ);
GST_DEBUG_OBJECT (qtdemux, "parsing cenc auxiliary info");
gst_byte_reader_init (&br, map.data + 8, map.size);
if (!qtdemux_parse_cenc_aux_info (qtdemux, stream, &br,
qtdemux->cenc_aux_info_sizes, qtdemux->cenc_aux_sample_count)) {
GST_ERROR_OBJECT (qtdemux, "failed to parse cenc auxiliary info");
gst_buffer_unmap(aux_info, &map);
gst_buffer_unref(aux_info);
ret = GST_FLOW_ERROR;
goto beach;
}
gst_buffer_unmap(aux_info, &map);
gst_buffer_unref(aux_info);
}
GST_LOG_OBJECT (qtdemux, "reading %d bytes @ %" G_GUINT64_FORMAT, size,
offset);