static GstStateChangeReturn
gst_multipart_demux_change_state (GstElement * element,
GstStateChange transition)
{
GstMultipartDemux *multipart;
GstStateChangeReturn ret;
multipart = GST_MULTIPART_DEMUX (element);
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
multipart->header_completed = FALSE;
g_free (multipart->boundary);
multipart->boundary = NULL;
g_free (multipart->mime_type);
multipart->mime_type = NULL;
gst_adapter_clear (multipart->adapter);
multipart->content_length = -1;
multipart->scanpos = 0;
gst_multipart_demux_remove_src_pads (multipart);
multipart->have_group_id = FALSE;
multipart->group_id = G_MAXUINT;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static void
gst_multipart_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstMultipartDemux *filter;
g_return_if_fail (GST_IS_MULTIPART_DEMUX (object));
filter = GST_MULTIPART_DEMUX (object);
switch (prop_id) {
case PROP_BOUNDARY:
g_value_set_string (value, filter->boundary);
break;
case PROP_AUTOSCAN:
g_value_set_boolean (value, filter->autoscan);
break;
case PROP_SINGLE_STREAM:
g_value_set_boolean (value, filter->singleStream);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_multipart_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstMultipartDemux *multipart;
GstAdapter *adapter;
gint size = 1;
GstFlowReturn res;
multipart = GST_MULTIPART_DEMUX (parent);
adapter = multipart->adapter;
res = GST_FLOW_OK;
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
GSList *l;
for (l = multipart->srcpads; l != NULL; l = l->next) {
GstMultipartPad *srcpad = l->data;
srcpad->discont = TRUE;
}
gst_adapter_clear (adapter);
}
gst_adapter_push (adapter, buf);
while (gst_adapter_available (adapter) > 0) {
GstMultipartPad *srcpad;
GstBuffer *outbuf;
gboolean created;
gint datalen;
if (G_UNLIKELY (!multipart->header_completed)) {
if ((size = multipart_parse_header (multipart)) < 0) {
goto nodata;
} else {
gst_adapter_flush (adapter, size);
multipart->header_completed = TRUE;
}
}
if ((size = multipart_find_boundary (multipart, &datalen)) < 0) {
goto nodata;
}
/* Invalidate header info */
multipart->header_completed = FALSE;
multipart->content_length = -1;
if (G_UNLIKELY (datalen <= 0)) {
GST_DEBUG_OBJECT (multipart, "skipping empty content.");
gst_adapter_flush (adapter, size - datalen);
} else {
GstClockTime ts;
srcpad =
gst_multipart_find_pad_by_mime (multipart,
multipart->mime_type, &created);
ts = gst_adapter_prev_pts (adapter, NULL);
outbuf = gst_adapter_take_buffer (adapter, datalen);
gst_adapter_flush (adapter, size - datalen);
if (created) {
GstTagList *tags;
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_TIME);
/* Push new segment, first buffer has 0 timestamp */
gst_pad_push_event (srcpad->pad, gst_event_new_segment (&segment));
tags = gst_tag_list_new (GST_TAG_CONTAINER_FORMAT, "Multipart", NULL);
gst_tag_list_set_scope (tags, GST_TAG_SCOPE_GLOBAL);
gst_pad_push_event (srcpad->pad, gst_event_new_tag (tags));
}
outbuf = gst_buffer_make_writable (outbuf);
if (srcpad->last_ts == GST_CLOCK_TIME_NONE || srcpad->last_ts != ts) {
GST_BUFFER_TIMESTAMP (outbuf) = ts;
srcpad->last_ts = ts;
} else {
GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
}
if (srcpad->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
srcpad->discont = FALSE;
} else {
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DISCONT);
}
GST_DEBUG_OBJECT (multipart,
"pushing buffer with timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
res = gst_pad_push (srcpad->pad, outbuf);
res = gst_multipart_combine_flows (multipart, srcpad, res);
if (res != GST_FLOW_OK)
break;
}
}
nodata:
if (G_UNLIKELY (size == MULTIPART_DATA_ERROR))
return GST_FLOW_ERROR;
if (G_UNLIKELY (size == MULTIPART_DATA_EOS))
return GST_FLOW_EOS;
return res;
}
static GstFlowReturn
gst_multipart_demux_chain (GstPad * pad, GstBuffer * buf)
{
GstMultipartDemux *multipart;
GstAdapter *adapter;
GstClockTime timestamp;
gint size = 1;
GstFlowReturn res;
multipart = GST_MULTIPART_DEMUX (gst_pad_get_parent (pad));
adapter = multipart->adapter;
res = GST_FLOW_OK;
timestamp = GST_BUFFER_TIMESTAMP (buf);
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
gst_adapter_clear (adapter);
}
gst_adapter_push (adapter, buf);
while (gst_adapter_available (adapter) > 0) {
GstMultipartPad *srcpad;
GstBuffer *outbuf;
gboolean created;
gint datalen;
if (G_UNLIKELY (!multipart->header_completed)) {
if ((size = multipart_parse_header (multipart)) < 0) {
goto nodata;
} else {
gst_adapter_flush (adapter, size);
multipart->header_completed = TRUE;
}
}
if ((size = multipart_find_boundary (multipart, &datalen)) < 0) {
goto nodata;
}
/* Invalidate header info */
multipart->header_completed = FALSE;
multipart->content_length = -1;
if (G_UNLIKELY (datalen <= 0)) {
GST_DEBUG_OBJECT (multipart, "skipping empty content.");
gst_adapter_flush (adapter, size - datalen);
} else {
srcpad =
gst_multipart_find_pad_by_mime (multipart,
multipart->mime_type, &created);
outbuf = gst_adapter_take_buffer (adapter, datalen);
gst_adapter_flush (adapter, size - datalen);
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (srcpad->pad));
if (created) {
GstTagList *tags;
/* Push new segment, first buffer has 0 timestamp */
gst_pad_push_event (srcpad->pad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0));
tags =
gst_tag_list_new_full (GST_TAG_CONTAINER_FORMAT, "Multipart", NULL);
gst_pad_push_event (srcpad->pad, gst_event_new_tag (tags));
GST_BUFFER_TIMESTAMP (outbuf) = 0;
} else {
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
}
GST_DEBUG_OBJECT (multipart,
"pushing buffer with timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
GST_DEBUG_OBJECT (multipart, "buffer has caps %" GST_PTR_FORMAT,
GST_BUFFER_CAPS (outbuf));
res = gst_pad_push (srcpad->pad, outbuf);
res = gst_multipart_combine_flows (multipart, srcpad, res);
if (res != GST_FLOW_OK)
break;
}
}
nodata:
gst_object_unref (multipart);
if (G_UNLIKELY (size == MULTIPART_DATA_ERROR))
return GST_FLOW_ERROR;
if (G_UNLIKELY (size == MULTIPART_DATA_EOS))
return GST_FLOW_UNEXPECTED;
return res;
}
