static gboolean
gst_mxf_mux_handle_sink_event (GstPad * pad, GstEvent * event)
{
GstMXFMux *mux = GST_MXF_MUX (gst_pad_get_parent (pad));
gboolean ret = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:
/* TODO: do something with the tags */
break;
case GST_EVENT_NEWSEGMENT:
/* We don't support NEWSEGMENT events */
ret = FALSE;
gst_event_unref (event);
break;
default:
break;
}
/* now GstCollectPads can take care of the rest, e.g. EOS */
if (ret)
ret = mux->collect_event (pad, event);
gst_object_unref (mux);
return ret;
}
static gboolean
gst_mxf_mux_sink_event (GstAggregator * aggregator,
GstAggregatorPad * aggpad, GstEvent * event)
{
GstMXFMux *mux = GST_MXF_MUX (aggregator);
gboolean ret = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_TAG:
/* TODO: do something with the tags */
break;
case GST_EVENT_CAPS:{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
ret = gst_mxf_mux_set_caps (mux, GST_MXF_MUX_PAD (aggpad), caps);
break;
}
default:
break;
}
/* now GstAggregator can take care of the rest, e.g. EOS */
if (ret)
ret =
GST_AGGREGATOR_CLASS (parent_class)->sink_event (aggregator, aggpad,
event);
return ret;
}
static GstPad *
gst_mxf_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * pad_name)
{
GstMXFMux *mux = GST_MXF_MUX (element);
GstMXFMuxPad *cpad;
GstPad *pad = NULL;
guint pad_number;
gchar *name = NULL;
const MXFEssenceElementWriter *writer;
if (mux->state != GST_MXF_MUX_STATE_HEADER) {
GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
return NULL;
}
writer = mxf_essence_element_writer_find (templ);
if (!writer) {
GST_ERROR_OBJECT (mux, "Not our template");
return NULL;
}
pad_number = g_atomic_int_exchange_and_add ((gint *) & mux->n_pads, 1);
name = gst_mxf_mux_create_pad_name (templ, pad_number);
GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
pad = gst_pad_new_from_template (templ, name);
g_free (name);
cpad = (GstMXFMuxPad *)
gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstMXFMuxPad));
cpad->last_timestamp = 0;
cpad->adapter = gst_adapter_new ();
cpad->writer = writer;
/* FIXME: hacked way to override/extend the event function of
* GstCollectPads; because it sets its own event function giving the
* element no access to events.
*/
mux->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (pad);
gst_pad_set_event_function (pad,
GST_DEBUG_FUNCPTR (gst_mxf_mux_handle_sink_event));
gst_pad_set_setcaps_function (pad, gst_mxf_mux_setcaps);
gst_pad_use_fixed_caps (pad);
gst_pad_set_active (pad, TRUE);
gst_element_add_pad (element, pad);
return pad;
}
static void
gst_mxf_mux_finalize (GObject * object)
{
GstMXFMux *mux = GST_MXF_MUX (object);
gst_mxf_mux_reset (mux);
if (mux->metadata) {
g_hash_table_destroy (mux->metadata);
mux->metadata = NULL;
g_list_free (mux->metadata_list);
mux->metadata_list = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstPad *
gst_mxf_mux_request_new_pad (GstElement * element,
GstPadTemplate * templ, const gchar * pad_name, const GstCaps * caps)
{
GstMXFMux *mux = GST_MXF_MUX (element);
GstMXFMuxPad *cpad;
GstPad *pad = NULL;
guint pad_number;
gchar *name = NULL;
const MXFEssenceElementWriter *writer;
if (mux->state != GST_MXF_MUX_STATE_HEADER) {
GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
return NULL;
}
writer = mxf_essence_element_writer_find (templ);
if (!writer) {
GST_ERROR_OBJECT (mux, "Not our template");
return NULL;
}
pad_number = g_atomic_int_add ((gint *) & mux->n_pads, 1);
name = gst_mxf_mux_create_pad_name (templ, pad_number);
GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
pad = gst_pad_new_from_template (templ, name);
g_free (name);
cpad = (GstMXFMuxPad *)
gst_collect_pads_add_pad (mux->collect, pad, sizeof (GstMXFMuxPad), NULL,
TRUE);
cpad->last_timestamp = 0;
cpad->adapter = gst_adapter_new ();
cpad->writer = writer;
gst_pad_use_fixed_caps (pad);
gst_pad_set_active (pad, TRUE);
gst_element_add_pad (element, pad);
return pad;
}
static GstAggregatorPad *
gst_mxf_mux_create_new_pad (GstAggregator * aggregator,
GstPadTemplate * templ, const gchar * pad_name, const GstCaps * caps)
{
GstMXFMux *mux = GST_MXF_MUX (aggregator);
GstMXFMuxPad *pad;
guint pad_number;
gchar *name = NULL;
const MXFEssenceElementWriter *writer;
if (mux->state != GST_MXF_MUX_STATE_HEADER) {
GST_WARNING_OBJECT (mux, "Can't request pads after writing header");
return NULL;
}
writer = mxf_essence_element_writer_find (templ);
if (!writer) {
GST_ERROR_OBJECT (mux, "Not our template");
return NULL;
}
pad_number = g_atomic_int_add ((gint *) & mux->n_pads, 1);
name = gst_mxf_mux_create_pad_name (templ, pad_number);
GST_DEBUG_OBJECT (mux, "Creating pad '%s'", name);
pad =
g_object_new (GST_TYPE_MXF_MUX_PAD, "name", name, "direction",
GST_PAD_SINK, "template", templ, NULL);
g_free (name);
pad->last_timestamp = 0;
pad->adapter = gst_adapter_new ();
pad->writer = writer;
gst_pad_use_fixed_caps (GST_PAD_CAST (pad));
return GST_AGGREGATOR_PAD (pad);
}
static gboolean
gst_mxf_mux_setcaps (GstPad * pad, GstCaps * caps)
{
GstMXFMux *mux = GST_MXF_MUX (gst_pad_get_parent (pad));
GstMXFMuxPad *cpad = (GstMXFMuxPad *) gst_pad_get_element_private (pad);
gboolean ret = TRUE;
MXFUUID d_instance_uid = { {0,} };
MXFMetadataFileDescriptor *old_descriptor = cpad->descriptor;
GList *l;
GST_DEBUG_OBJECT (pad, "Setting caps %" GST_PTR_FORMAT, caps);
if (old_descriptor) {
memcpy (&d_instance_uid, &MXF_METADATA_BASE (old_descriptor)->instance_uid,
16);
cpad->descriptor = NULL;
g_free (cpad->mapping_data);
cpad->mapping_data = NULL;
}
cpad->descriptor =
cpad->writer->get_descriptor (gst_pad_get_pad_template (pad), caps,
&cpad->write_func, &cpad->mapping_data);
if (!cpad->descriptor) {
GST_ERROR_OBJECT (mux,
"Couldn't get descriptor for pad '%s' with caps %" GST_PTR_FORMAT,
GST_PAD_NAME (pad), caps);
gst_object_unref (mux);
return FALSE;
}
if (mxf_uuid_is_zero (&d_instance_uid))
mxf_uuid_init (&d_instance_uid, mux->metadata);
memcpy (&MXF_METADATA_BASE (cpad->descriptor)->instance_uid, &d_instance_uid,
16);
if (old_descriptor) {
for (l = mux->metadata_list; l; l = l->next) {
MXFMetadataBase *tmp = l->data;
if (mxf_uuid_is_equal (&d_instance_uid, &tmp->instance_uid)) {
l->data = cpad->descriptor;
break;
}
}
} else {
mux->metadata_list = g_list_prepend (mux->metadata_list, cpad->descriptor);
}
g_hash_table_replace (mux->metadata,
&MXF_METADATA_BASE (cpad->descriptor)->instance_uid, cpad->descriptor);
if (old_descriptor) {
if (mux->preface && mux->preface->content_storage &&
mux->preface->content_storage->packages) {
guint i, j;
for (i = 0; i < mux->preface->content_storage->n_packages; i++) {
MXFMetadataSourcePackage *package;
if (!MXF_IS_METADATA_SOURCE_PACKAGE (mux->preface->content_storage->
packages[i]))
continue;
package =
MXF_METADATA_SOURCE_PACKAGE (mux->preface->content_storage->
packages[i]);
if (!package->descriptor)
continue;
if (MXF_IS_METADATA_MULTIPLE_DESCRIPTOR (package->descriptor)) {
MXFMetadataMultipleDescriptor *tmp =
MXF_METADATA_MULTIPLE_DESCRIPTOR (package->descriptor);
for (j = 0; j < tmp->n_sub_descriptors; j++) {
if (tmp->sub_descriptors[j] ==
MXF_METADATA_GENERIC_DESCRIPTOR (old_descriptor)) {
tmp->sub_descriptors[j] =
MXF_METADATA_GENERIC_DESCRIPTOR (cpad->descriptor);
memcpy (&tmp->sub_descriptors_uids[j], &d_instance_uid, 16);
}
}
} else if (package->descriptor ==
MXF_METADATA_GENERIC_DESCRIPTOR (old_descriptor)) {
package->descriptor =
MXF_METADATA_GENERIC_DESCRIPTOR (cpad->descriptor);
memcpy (&package->descriptor_uid, &d_instance_uid, 16);
}
}
}
}
gst_object_unref (mux);
return ret;
}