static gboolean
default_map (GstVideoMeta * meta, guint plane, GstMapInfo * info,
gpointer * data, gint * stride, GstMapFlags flags)
{
guint idx, length;
gsize offset, skip;
GstBuffer *buffer = meta->buffer;
offset = meta->offset[plane];
/* find the memory block for this plane, this is the memory block containing
* the plane offset. FIXME use plane size */
if (!gst_buffer_find_memory (buffer, offset, 1, &idx, &length, &skip))
goto no_memory;
if (!gst_buffer_map_range (buffer, idx, length, info, flags))
goto cannot_map;
*stride = meta->stride[plane];
*data = (guint8 *) info->data + skip;
return TRUE;
/* ERRORS */
no_memory:
{
GST_DEBUG ("plane %u, no memory at offset %" G_GSIZE_FORMAT, plane, offset);
return FALSE;
}
cannot_map:
{
GST_DEBUG ("cannot map memory range %u-%u", idx, length);
return FALSE;
}
}
static GstFlowReturn
gst_dtls_srtp_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
{
GstDtlsSrtpDemux *self = GST_DTLS_SRTP_DEMUX (parent);
GstMapInfo map;
guint8 first_byte;
if (!gst_buffer_map_range (buffer, 0, 1, &map, GST_MAP_READ)) {
gst_buffer_unref (buffer);
GST_ELEMENT_ERROR (self, STREAM, DEMUX, ("Could not map buffer"),
("Unable to map the first memory of buffer %p", buffer));
return GST_FLOW_ERROR;
}
if (map.size < 1) {
gst_buffer_unmap (buffer, &map);
GST_WARNING_OBJECT (self, "Buffer %p has a first GstMemory that's less than"
" one bytes long, ignoring", buffer);
goto done;
}
first_byte = map.data[0];
gst_buffer_unmap (buffer, &map);
if (first_byte > 127 && first_byte < 192) {
return gst_pad_push (self->srtp_srcpad, buffer);
} else if (first_byte > 19 && first_byte < 64) {
return gst_pad_push (self->dtls_srcpad, buffer);
}
GST_WARNING_OBJECT (self, "Buffer %p has first byte %d which is neither DTLS"
" nor SRTP/RTP nor SRTCP/RTCP, ignoring it", buffer, first_byte);
done:
gst_buffer_unref (buffer);
return GST_FLOW_OK;
}
