mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-23 16:50:47 +00:00
Code Issues 1 Projects Releases Wiki Activity

isomp4: Check presence of mfhd in moof

Browse source 
The 'mfhd' atom is mandatory in 'moof'. We can later on check whether
the fragment number properly increases
This commit is contained in:
Edward Hervey 2014-11-26 16:04:26 +01:00
parent 5e3e97353d
commit 5b5e9f320f
1 changed files with 33 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
gst/isomp4/qtdemux.c
View file

@ -2669,6 +2669,22 @@ qtdemux_find_stream (GstQTDemux * qtdemux, guint32 id)
return NULL;
}
static gboolean
qtdemux_parse_mfhd (GstQTDemux * qtdemux, GstByteReader * mfhd,
guint32 * fragment_number)
{
if (!gst_byte_reader_skip (mfhd, 4))
goto fail;
if (!gst_byte_reader_get_uint32_be (mfhd, fragment_number))
goto fail;
return TRUE;
fail:
{
GST_WARNING_OBJECT (qtdemux, "Failed to parse mfhd atom");
return FALSE;
}
}
static gboolean
qtdemux_parse_tfhd (GstQTDemux * qtdemux, GstByteReader * tfhd,
QtDemuxStream ** stream, guint32 * default_sample_duration,
@ -2764,10 +2780,11 @@ static gboolean
qtdemux_parse_moof (GstQTDemux * qtdemux, const guint8 * buffer, guint length,
guint64 moof_offset, QtDemuxStream * stream)
{
GNode *moof_node, *traf_node, *tfhd_node, *trun_node, *tfdt_node;
GstByteReader trun_data, tfhd_data, tfdt_data;
GNode *moof_node, *traf_node, *tfhd_node, *trun_node, *tfdt_node, *mfhd_node;
GstByteReader mfhd_data, trun_data, tfhd_data, tfdt_data;
guint32 ds_size = 0, ds_duration = 0, ds_flags = 0;
gint64 base_offset, running_offset;
guint32 frag_num;
/* NOTE @stream ignored */
@ -2775,6 +2792,15 @@ qtdemux_parse_moof (GstQTDemux * qtdemux, const guint8 * buffer, guint length,
qtdemux_parse_node (qtdemux, moof_node, buffer, length);
qtdemux_node_dump (qtdemux, moof_node);
/* Get fragment number from mfhd and check it's valid */
mfhd_node =
qtdemux_tree_get_child_by_type_full (moof_node, FOURCC_mfhd, &mfhd_data);
if (mfhd_node == NULL)
goto missing_mfhd;
if (!qtdemux_parse_mfhd (qtdemux, &mfhd_data, &frag_num))
goto fail;
GST_DEBUG_OBJECT (qtdemux, "Fragment #%d", frag_num);
/* unknown base_offset to start with */
base_offset = running_offset = -1;
traf_node = qtdemux_tree_get_child_by_type (moof_node, FOURCC_traf);
@ -2843,6 +2869,11 @@ missing_tfhd:
GST_DEBUG_OBJECT (qtdemux, "missing tfhd box");
goto fail;
}
missing_mfhd:
{
GST_DEBUG_OBJECT (qtdemux, "Missing mfhd box");
goto fail;
}
lost_offset:
{
GST_DEBUG_OBJECT (qtdemux, "lost offset");