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mxfdemux: Don't allow any wrapping other than frame wrapping

Browse source 
Bad things will happen otherwise, like reading a complete,
multiple GB large video track into a single buffer.

Conflicts:
	gst/mxf/mxfdemux.c
This commit is contained in:
Sebastian Dröge 2012-12-06 10:06:02 +01:00
parent 76ca3c77d7
commit 3478231790
1 changed files with 27 additions and 0 deletions
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27
gst/mxf/mxfdemux.c
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@ -855,6 +855,14 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
caps = NULL;
}
if (etrack->handler
&& etrack->handler->get_track_wrapping (track) !=
MXF_ESSENCE_WRAPPING_FRAME_WRAPPING) {
GST_ERROR_OBJECT (demux, "Only frame wrapping currently supported");
return GST_FLOW_ERROR;
}
etrack->source_package = package;
etrack->source_track = track;
continue;
@ -886,6 +894,7 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
GST_ERROR_OBJECT (demux, "Failed to update essence track %u", i);
return GST_FLOW_ERROR;
}
}
return GST_FLOW_OK;
@ -1987,6 +1996,9 @@ gst_mxf_demux_pull_klv_packet (GstMXFDemux * demux, guint64 offset, MXFUL * key,
guint64 length;
GstFlowReturn ret = GST_FLOW_OK;
GstMapInfo map;
#ifndef GST_DISABLE_GST_DEBUG
gchar str[48];
#endif
memset (key, 0, sizeof (MXFUL));
@ -1999,6 +2011,9 @@ gst_mxf_demux_pull_klv_packet (GstMXFDemux * demux, guint64 offset, MXFUL * key,
memcpy (key, map.data, 16);
GST_DEBUG_OBJECT (demux, "Got KLV packet with key %s", mxf_ul_to_string (key,
str));
/* Decode BER encoded packet length */
if ((map.data[16] & 0x80) == 0) {
length = map.data[16];
@ -2048,6 +2063,9 @@ gst_mxf_demux_pull_klv_packet (GstMXFDemux * demux, guint64 offset, MXFUL * key,
goto beach;
}
GST_DEBUG_OBJECT (demux, "KLV packet with key %s has length %u",
mxf_ul_to_string (key, str), length);
/* Pull the complete KLV packet */
if ((ret = gst_mxf_demux_pull_range (demux, offset + data_offset, length,
&buffer)) != GST_FLOW_OK)
@ -2887,6 +2905,9 @@ gst_mxf_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf)
guint64 offset = 0;
GstBuffer *buffer = NULL;
gboolean res;
#ifndef GST_DISABLE_GST_DEBUG
gchar str[48];
#endif
demux = GST_MXF_DEMUX (parent);
@ -2981,6 +3002,9 @@ gst_mxf_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf)
memcpy (&key, data, 16);
GST_DEBUG_OBJECT (demux, "Got KLV packet with key %s",
mxf_ul_to_string (&key, str));
/* Decode BER encoded packet length */
if ((data[16] & 0x80) == 0) {
length = data[16];
@ -3025,6 +3049,9 @@ gst_mxf_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * inbuf)
break;
}
GST_DEBUG_OBJECT (demux, "KLV packet with key %s has length %u",
mxf_ul_to_string (&key, str), length);
if (gst_adapter_available (demux->adapter) < offset + length)
break;