static gboolean
gst_capsfilter_accept_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (base);
GstCaps *filter_caps;
gboolean ret;
GST_OBJECT_LOCK (capsfilter);
filter_caps = gst_caps_ref (capsfilter->filter_caps);
GST_OBJECT_UNLOCK (capsfilter);
ret = gst_caps_can_intersect (caps, filter_caps);
GST_DEBUG_OBJECT (capsfilter, "can intersect: %d", ret);
if (ret) {
/* if we can intersect, see if the other end also accepts */
if (direction == GST_PAD_SRC)
ret =
gst_pad_peer_query_accept_caps (GST_BASE_TRANSFORM_SINK_PAD (base),
caps);
else
ret =
gst_pad_peer_query_accept_caps (GST_BASE_TRANSFORM_SRC_PAD (base),
caps);
GST_DEBUG_OBJECT (capsfilter, "peer accept: %d", ret);
}
gst_caps_unref (filter_caps);
return ret;
}
static void
gst_capsfilter_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (object);
switch (prop_id) {
case PROP_FILTER_CAPS:{
GstCaps *new_caps;
GstCaps *old_caps;
const GstCaps *new_caps_val = gst_value_get_caps (value);
if (new_caps_val == NULL) {
new_caps = gst_caps_new_any ();
} else {
new_caps = (GstCaps *) new_caps_val;
gst_caps_ref (new_caps);
}
old_caps = capsfilter->filter_caps;
capsfilter->filter_caps = new_caps;
gst_caps_unref (old_caps);
GST_DEBUG_OBJECT (capsfilter, "set new caps %" GST_PTR_FORMAT, new_caps);
/* FIXME: Need to activate these caps on the pads
* http://bugzilla.gnome.org/show_bug.cgi?id=361718
*/
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_capsfilter_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (base);
GstCaps *ret, *filter_caps, *tmp;
GST_OBJECT_LOCK (capsfilter);
filter_caps = gst_caps_ref (capsfilter->filter_caps);
GST_OBJECT_UNLOCK (capsfilter);
if (filter) {
tmp =
gst_caps_intersect_full (filter, filter_caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (filter_caps);
filter_caps = tmp;
}
ret = gst_caps_intersect_full (filter_caps, caps, GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (capsfilter, "input: %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (capsfilter, "filter: %" GST_PTR_FORMAT, filter);
GST_DEBUG_OBJECT (capsfilter, "caps filter: %" GST_PTR_FORMAT,
filter_caps);
GST_DEBUG_OBJECT (capsfilter, "intersect: %" GST_PTR_FORMAT, ret);
gst_caps_unref (filter_caps);
return ret;
}
static void
gst_capsfilter_dispose (GObject * object)
{
GstCapsFilter *filter = GST_CAPSFILTER (object);
gst_caps_replace (&filter->filter_caps, NULL);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static gboolean
gst_capsfilter_stop (GstBaseTransform * trans)
{
GstCapsFilter *filter = GST_CAPSFILTER (trans);
g_list_free_full (filter->pending_events, (GDestroyNotify) gst_event_unref);
filter->pending_events = NULL;
return TRUE;
}
static void
gst_capsfilter_dispose (GObject * object)
{
GstCapsFilter *filter = GST_CAPSFILTER (object);
gst_caps_replace (&filter->filter_caps, NULL);
g_list_free_full (filter->pending_events, (GDestroyNotify) gst_event_unref);
filter->pending_events = NULL;
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstCaps *
gst_capsfilter_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (base);
GstCaps *ret;
ret = gst_caps_intersect (caps, capsfilter->filter_caps);
return ret;
}
static void
gst_capsfilter_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (object);
switch (prop_id) {
case PROP_FILTER_CAPS:
gst_value_set_caps (value, capsfilter->filter_caps);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Queue the segment event if there was no caps event */
static gboolean
gst_capsfilter_sink_event (GstBaseTransform * trans, GstEvent * event)
{
GstCapsFilter *filter = GST_CAPSFILTER (trans);
if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP) {
GList *l;
for (l = filter->pending_events; l;) {
if (GST_EVENT_TYPE (l->data) == GST_EVENT_SEGMENT) {
gst_event_unref (l->data);
l = g_list_delete_link (l, l);
} else {
l = l->next;
}
}
}
if (!GST_EVENT_IS_STICKY (event) || GST_EVENT_TYPE (event) <= GST_EVENT_CAPS)
goto done;
/* If we get EOS before any buffers, just push all pending events */
if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
GList *l;
for (l = g_list_last (filter->pending_events); l; l = l->prev) {
GST_LOG_OBJECT (trans, "Forwarding %s event",
GST_EVENT_TYPE_NAME (l->data));
GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, l->data);
}
g_list_free (filter->pending_events);
filter->pending_events = NULL;
} else if (!gst_pad_has_current_caps (trans->sinkpad)) {
GST_LOG_OBJECT (trans, "Got %s event before caps, queueing",
GST_EVENT_TYPE_NAME (event));
filter->pending_events = g_list_prepend (filter->pending_events, event);
return TRUE;
}
done:
GST_LOG_OBJECT (trans, "Forwarding %s event", GST_EVENT_TYPE_NAME (event));
return GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans, event);
}
static GstCaps *
gst_capsfilter_transform_caps (GstBaseTransform * base,
GstPadDirection direction, GstCaps * caps)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (base);
GstCaps *ret, *filter_caps;
GST_OBJECT_LOCK (capsfilter);
filter_caps = gst_caps_ref (capsfilter->filter_caps);
GST_OBJECT_UNLOCK (capsfilter);
ret = gst_caps_intersect (caps, filter_caps);
GST_DEBUG_OBJECT (capsfilter, "filter: %" GST_PTR_FORMAT, filter_caps);
GST_DEBUG_OBJECT (capsfilter, "intersect: %" GST_PTR_FORMAT, ret);
gst_caps_unref (filter_caps);
return ret;
}
static void
gst_capsfilter_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (object);
switch (prop_id) {
case PROP_FILTER_CAPS:{
GstCaps *new_caps;
GstCaps *old_caps;
const GstCaps *new_caps_val = gst_value_get_caps (value);
if (new_caps_val == NULL) {
new_caps = gst_caps_new_any ();
} else {
new_caps = (GstCaps *) new_caps_val;
gst_caps_ref (new_caps);
}
GST_OBJECT_LOCK (capsfilter);
old_caps = capsfilter->filter_caps;
capsfilter->filter_caps = new_caps;
GST_OBJECT_UNLOCK (capsfilter);
gst_caps_unref (old_caps);
GST_DEBUG_OBJECT (capsfilter, "set new caps %" GST_PTR_FORMAT, new_caps);
gst_base_transform_reconfigure_sink (GST_BASE_TRANSFORM (object));
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_capsfilter_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCapsFilter *capsfilter = GST_CAPSFILTER (object);
switch (prop_id) {
case PROP_FILTER_CAPS:{
GstCaps *new_caps;
GstCaps *old_caps, *suggest, *nego;
const GstCaps *new_caps_val = gst_value_get_caps (value);
if (new_caps_val == NULL) {
new_caps = gst_caps_new_any ();
} else {
new_caps = (GstCaps *) new_caps_val;
gst_caps_ref (new_caps);
}
GST_OBJECT_LOCK (capsfilter);
old_caps = capsfilter->filter_caps;
capsfilter->filter_caps = new_caps;
GST_OBJECT_UNLOCK (capsfilter);
gst_caps_unref (old_caps);
GST_DEBUG_OBJECT (capsfilter, "set new caps %" GST_PTR_FORMAT, new_caps);
/* filter the currently negotiated format against the new caps */
GST_OBJECT_LOCK (GST_BASE_TRANSFORM_SINK_PAD (object));
nego = GST_PAD_CAPS (GST_BASE_TRANSFORM_SINK_PAD (object));
if (nego) {
GST_DEBUG_OBJECT (capsfilter, "we had negotiated caps %" GST_PTR_FORMAT,
nego);
if (G_UNLIKELY (gst_caps_is_any (new_caps))) {
GST_DEBUG_OBJECT (capsfilter, "not settings any suggestion");
suggest = NULL;
} else {
GstStructure *s1, *s2;
/* first check if the name is the same */
s1 = gst_caps_get_structure (nego, 0);
s2 = gst_caps_get_structure (new_caps, 0);
if (gst_structure_get_name_id (s1) == gst_structure_get_name_id (s2)) {
/* same name, copy all fields from the new caps into the previously
* negotiated caps */
suggest = gst_caps_copy (nego);
s1 = gst_caps_get_structure (suggest, 0);
gst_structure_foreach (s2, (GstStructureForeachFunc) copy_func, s1);
GST_DEBUG_OBJECT (capsfilter, "copied structure fields");
} else {
GST_DEBUG_OBJECT (capsfilter, "different structure names");
/* different names, we can only suggest the complete caps */
suggest = gst_caps_copy (new_caps);
}
}
} else {
GST_DEBUG_OBJECT (capsfilter, "no negotiated caps");
/* no previous caps, the getcaps function will be used to find suitable
* caps */
suggest = NULL;
}
GST_OBJECT_UNLOCK (GST_BASE_TRANSFORM_SINK_PAD (object));
GST_DEBUG_OBJECT (capsfilter, "suggesting new caps %" GST_PTR_FORMAT,
suggest);
gst_base_transform_suggest (GST_BASE_TRANSFORM (object), suggest, 0);
if (suggest)
gst_caps_unref (suggest);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Ouput buffer preparation ... if the buffer has no caps, and our allowed
* output caps is fixed, then send the caps downstream, making sure caps are
* sent before segment event.
*
* This ensures that caps event is sent if we can, so that pipelines like:
* gst-launch filesrc location=rawsamples.raw !
* audio/x-raw,format=S16LE,rate=48000,channels=2 ! alsasink
* will work.
*/
static GstFlowReturn
gst_capsfilter_prepare_buf (GstBaseTransform * trans, GstBuffer * input,
GstBuffer ** buf)
{
GstFlowReturn ret = GST_FLOW_OK;
/* always return the input as output buffer */
*buf = input;
if (!gst_pad_has_current_caps (trans->sinkpad)) {
/* No caps. See if the output pad only supports fixed caps */
GstCapsFilter *filter = GST_CAPSFILTER (trans);
GstCaps *out_caps;
GList *pending_events = filter->pending_events;
GST_LOG_OBJECT (trans, "Input pad does not have caps");
filter->pending_events = NULL;
out_caps = gst_pad_get_current_caps (trans->srcpad);
if (out_caps == NULL) {
out_caps = gst_pad_get_allowed_caps (trans->srcpad);
g_return_val_if_fail (out_caps != NULL, GST_FLOW_ERROR);
}
out_caps = gst_caps_simplify (out_caps);
if (gst_caps_is_fixed (out_caps) && !gst_caps_is_empty (out_caps)) {
GST_DEBUG_OBJECT (trans, "Have fixed output caps %"
GST_PTR_FORMAT " to apply to srcpad", out_caps);
if (!gst_pad_has_current_caps (trans->srcpad)) {
if (gst_pad_set_caps (trans->srcpad, out_caps)) {
if (pending_events) {
GList *l;
for (l = g_list_last (pending_events); l; l = l->prev) {
GST_LOG_OBJECT (trans, "Forwarding %s event",
GST_EVENT_TYPE_NAME (l->data));
GST_BASE_TRANSFORM_CLASS (parent_class)->sink_event (trans,
l->data);
}
g_list_free (pending_events);
pending_events = NULL;
}
} else {
ret = GST_FLOW_NOT_NEGOTIATED;
}
}
g_list_free_full (pending_events, (GDestroyNotify) gst_event_unref);
gst_caps_unref (out_caps);
} else {
gchar *caps_str = gst_caps_to_string (out_caps);
GST_DEBUG_OBJECT (trans, "Cannot choose caps. Have unfixed output caps %"
GST_PTR_FORMAT, out_caps);
gst_caps_unref (out_caps);
GST_ELEMENT_ERROR (trans, STREAM, FORMAT,
("Filter caps do not completely specify the output format"),
("Output caps are unfixed: %s", caps_str));
g_free (caps_str);
g_list_free_full (pending_events, (GDestroyNotify) gst_event_unref);
ret = GST_FLOW_ERROR;
}
}
return ret;
}