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gstreamer/gst/frei0r/gstfrei0rmixer.c

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/* GStreamer
* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstfrei0r.h"
#include "gstfrei0rmixer.h"
GST_DEBUG_CATEGORY_EXTERN (frei0r_debug);
#define GST_CAT_DEFAULT frei0r_debug
typedef struct
{
f0r_plugin_info_t info;
GstFrei0rFuncTable ftable;
} GstFrei0rMixerClassData;
static void
gst_frei0r_mixer_reset (GstFrei0rMixer * self)
{
GstFrei0rMixerClass *klass = GST_FREI0R_MIXER_GET_CLASS (self);
if (self->f0r_instance) {
klass->ftable->destruct (self->f0r_instance);
self->f0r_instance = NULL;
}
if (self->property_cache)
gst_frei0r_property_cache_free (klass->properties, self->property_cache,
klass->n_properties);
self->property_cache = NULL;
gst_caps_replace (&self->caps, NULL);
gst_event_replace (&self->newseg_event, NULL);
self->fmt = GST_VIDEO_FORMAT_UNKNOWN;
self->width = self->height = 0;
}
static void
gst_frei0r_mixer_finalize (GObject * object)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (object);
GstFrei0rMixerClass *klass = GST_FREI0R_MIXER_GET_CLASS (object);
if (self->property_cache)
gst_frei0r_property_cache_free (klass->properties, self->property_cache,
klass->n_properties);
self->property_cache = NULL;
if (self->collect)
gst_object_unref (self->collect);
self->collect = NULL;
G_OBJECT_CLASS (g_type_class_peek_parent (klass))->finalize (object);
}
static void
gst_frei0r_mixer_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (object);
GstFrei0rMixerClass *klass = GST_FREI0R_MIXER_GET_CLASS (object);
if (!gst_frei0r_get_property (self->f0r_instance, klass->ftable,
klass->properties, klass->n_properties, self->property_cache, prop_id,
value))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
static void
gst_frei0r_mixer_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (object);
GstFrei0rMixerClass *klass = GST_FREI0R_MIXER_GET_CLASS (object);
if (!gst_frei0r_set_property (self->f0r_instance, klass->ftable,
klass->properties, klass->n_properties, self->property_cache, prop_id,
value))
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
static GstStateChangeReturn
gst_frei0r_mixer_change_state (GstElement * element, GstStateChange transition)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (element);
GstFrei0rMixerClass *klass = GST_FREI0R_MIXER_GET_CLASS (self);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_collect_pads_start (self->collect);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
/* Stop before calling the parent's state change function as
* GstCollectPads might take locks and we would deadlock in that
* case
*/
if (transition == GST_STATE_CHANGE_PAUSED_TO_READY)
gst_collect_pads_stop (self->collect);
ret =
GST_ELEMENT_CLASS (g_type_class_peek_parent (klass))->change_state
(element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_frei0r_mixer_reset (self);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static GstCaps *
gst_frei0r_mixer_get_caps (GstPad * pad)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
GstCaps *caps = NULL;
if (self->caps) {
caps = gst_caps_ref (self->caps);
} else {
GstCaps *tmp, *tmp1;
tmp = gst_caps_copy (gst_pad_get_pad_template_caps (self->src));
tmp1 = gst_pad_peer_get_caps (pad);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp1);
gst_caps_unref (tmp);
} else {
caps = tmp;
}
tmp = caps;
tmp1 = gst_pad_peer_get_caps (self->sink0);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp);
gst_caps_unref (tmp1);
}
tmp = caps;
tmp1 = gst_pad_peer_get_caps (self->sink1);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp);
gst_caps_unref (tmp1);
}
if (self->sink2) {
tmp = caps;
tmp1 = gst_pad_peer_get_caps (self->sink2);
if (tmp1) {
caps = gst_caps_intersect (tmp, tmp1);
gst_caps_unref (tmp);
gst_caps_unref (tmp1);
}
}
}
gst_object_unref (self);
return caps;
}
static gboolean
gst_frei0r_mixer_set_caps (GstPad * pad, GstCaps * caps)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
gboolean ret = TRUE;
gst_caps_replace (&self->caps, caps);
if (pad != self->src)
ret &= gst_pad_set_caps (self->src, caps);
if (pad != self->sink0)
ret &= gst_pad_set_caps (self->sink0, caps);
if (pad != self->sink1)
ret &= gst_pad_set_caps (self->sink1, caps);
if (pad != self->sink2 && self->sink2)
ret &= gst_pad_set_caps (self->sink2, caps);
if (ret) {
if (!gst_video_format_parse_caps (caps, &self->fmt, &self->width,
&self->height)) {
ret = FALSE;
goto out;
}
}
out:
gst_object_unref (self);
return ret;
}
static gboolean
gst_frei0r_mixer_src_query_duration (GstFrei0rMixer * self, GstQuery * query)
{
gint64 min;
gboolean res;
GstFormat format;
GstIterator *it;
gboolean done;
/* parse format */
gst_query_parse_duration (query, &format, NULL);
min = -1;
res = TRUE;
done = FALSE;
/* Take minimum of all durations */
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (self));
while (!done) {
GstIteratorResult ires;
gpointer item;
ires = gst_iterator_next (it, &item);
switch (ires) {
case GST_ITERATOR_DONE:
done = TRUE;
break;
case GST_ITERATOR_OK:
{
GstPad *pad = GST_PAD_CAST (item);
gint64 duration;
/* ask sink peer for duration */
res &= gst_pad_query_peer_duration (pad, &format, &duration);
/* take min from all valid return values */
if (res) {
/* valid unknown length, stop searching */
if (duration == -1) {
min = duration;
done = TRUE;
}
/* else see if smaller than current min */
else if (duration < min)
min = duration;
}
gst_object_unref (pad);
break;
}
case GST_ITERATOR_RESYNC:
min = -1;
res = TRUE;
gst_iterator_resync (it);
break;
default:
res = FALSE;
done = TRUE;
break;
}
}
gst_iterator_free (it);
if (res) {
/* and store the min */
GST_DEBUG_OBJECT (self, "Total duration in format %s: %"
GST_TIME_FORMAT, gst_format_get_name (format), GST_TIME_ARGS (min));
gst_query_set_duration (query, format, min);
}
return res;
}
static gboolean
gst_frei0r_mixer_src_query_latency (GstFrei0rMixer * self, GstQuery * query)
{
GstClockTime min, max;
gboolean live;
gboolean res;
GstIterator *it;
gboolean done;
res = TRUE;
done = FALSE;
live = FALSE;
min = 0;
max = GST_CLOCK_TIME_NONE;
/* Take maximum of all latency values */
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (self));
while (!done) {
GstIteratorResult ires;
gpointer item;
ires = gst_iterator_next (it, &item);
switch (ires) {
case GST_ITERATOR_DONE:
done = TRUE;
break;
case GST_ITERATOR_OK:
{
GstPad *pad = GST_PAD_CAST (item);
GstQuery *peerquery;
GstClockTime min_cur, max_cur;
gboolean live_cur;
peerquery = gst_query_new_latency ();
/* Ask peer for latency */
res &= gst_pad_peer_query (pad, peerquery);
/* take max from all valid return values */
if (res) {
gst_query_parse_latency (peerquery, &live_cur, &min_cur, &max_cur);
if (min_cur > min)
min = min_cur;
if (max_cur != GST_CLOCK_TIME_NONE &&
((max != GST_CLOCK_TIME_NONE && max_cur > max) ||
(max == GST_CLOCK_TIME_NONE)))
max = max_cur;
live = live || live_cur;
}
gst_query_unref (peerquery);
gst_object_unref (pad);
break;
}
case GST_ITERATOR_RESYNC:
live = FALSE;
min = 0;
max = GST_CLOCK_TIME_NONE;
res = TRUE;
gst_iterator_resync (it);
break;
default:
res = FALSE;
done = TRUE;
break;
}
}
gst_iterator_free (it);
if (res) {
/* store the results */
GST_DEBUG_OBJECT (self, "Calculated total latency: live %s, min %"
GST_TIME_FORMAT ", max %" GST_TIME_FORMAT,
(live ? "yes" : "no"), GST_TIME_ARGS (min), GST_TIME_ARGS (max));
gst_query_set_latency (query, live, min, max);
}
return res;
}
static gboolean
gst_frei0r_mixer_src_query (GstPad * pad, GstQuery * query)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
gboolean ret = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
ret = gst_pad_query (self->sink0, query);
break;
case GST_QUERY_DURATION:
ret = gst_frei0r_mixer_src_query_duration (self, query);
break;
case GST_QUERY_LATENCY:
ret = gst_frei0r_mixer_src_query_latency (self, query);
break;
default:
ret = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (self);
return ret;
}
static gboolean
gst_frei0r_mixer_sink_query (GstPad * pad, GstQuery * query)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
gboolean ret = gst_pad_query (self->src, query);
gst_object_unref (self);
return ret;
}
static gboolean
forward_event_func (GstPad * pad, GValue * ret, GstEvent * event)
{
gst_event_ref (event);
GST_LOG_OBJECT (pad, "About to send event %s", GST_EVENT_TYPE_NAME (event));
if (!gst_pad_push_event (pad, event)) {
g_value_set_boolean (ret, FALSE);
GST_WARNING_OBJECT (pad, "Sending event %p (%s) failed.",
event, GST_EVENT_TYPE_NAME (event));
} else {
GST_LOG_OBJECT (pad, "Sent event %p (%s).",
event, GST_EVENT_TYPE_NAME (event));
}
gst_object_unref (pad);
return TRUE;
}
static gboolean
forward_event (GstFrei0rMixer * self, GstEvent * event)
{
GstIterator *it;
GValue vret = { 0 };
GST_LOG_OBJECT (self, "Forwarding event %p (%s)", event,
GST_EVENT_TYPE_NAME (event));
g_value_init (&vret, G_TYPE_BOOLEAN);
g_value_set_boolean (&vret, TRUE);
it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (self));
gst_iterator_fold (it, (GstIteratorFoldFunction) forward_event_func, &vret,
event);
gst_iterator_free (it);
gst_event_unref (event);
return g_value_get_boolean (&vret);
}
static gboolean
gst_frei0r_mixer_src_event (GstPad * pad, GstEvent * event)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
gboolean ret = FALSE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:
/* QoS might be tricky */
ret = FALSE;
break;
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
/* parse the seek parameters */
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL, NULL);
/* check if we are flushing */
if (flags & GST_SEEK_FLAG_FLUSH) {
/* make sure we accept nothing anymore and return WRONG_STATE */
gst_collect_pads_set_flushing (self->collect, TRUE);
/* flushing seek, start flush downstream, the flush will be done
* when all pads received a FLUSH_STOP. */
gst_pad_push_event (self->src, gst_event_new_flush_start ());
}
ret = forward_event (self, event);
break;
}
case GST_EVENT_NAVIGATION:
/* navigation is rather pointless. */
ret = FALSE;
break;
default:
/* just forward the rest for now */
ret = forward_event (self, event);
break;
}
gst_object_unref (self);
return ret;
}
static gboolean
gst_frei0r_mixer_sink0_event (GstPad * pad, GstEvent * event)
{
GstFrei0rMixer *self = GST_FREI0R_MIXER (gst_pad_get_parent (pad));
gboolean ret = FALSE;
GST_DEBUG ("Got %s event on pad %s:%s", GST_EVENT_TYPE_NAME (event),
GST_DEBUG_PAD_NAME (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
gst_event_replace (&self->newseg_event, event);
break;
default:
break;
}
/* now GstCollectPads can take care of the rest, e.g. EOS */
ret = self->collect_event (pad, event);
gst_object_unref (self);
return ret;
}
static GstFlowReturn
gst_frei0r_mixer_collected (GstCollectPads * pads, GstFrei0rMixer * self)
{
GstBuffer *inbuf0 = NULL, *inbuf1 = NULL, *inbuf2 = NULL;
GstBuffer *outbuf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
GSList *l;
GstFrei0rMixerClass *klass = GST_FREI0R_MIXER_GET_CLASS (self);
gdouble time;
if (G_UNLIKELY (self->width <= 0 || self->height <= 0))
return GST_FLOW_NOT_NEGOTIATED;
if (G_UNLIKELY (!self->f0r_instance)) {
self->f0r_instance =
gst_frei0r_instance_construct (klass->ftable, klass->properties,
klass->n_properties, self->property_cache, self->width, self->height);
if (G_UNLIKELY (!self->f0r_instance))
return GST_FLOW_ERROR;
}
if (self->newseg_event) {
gst_pad_push_event (self->src, self->newseg_event);
self->newseg_event = NULL;
}
if ((ret =
gst_pad_alloc_buffer_and_set_caps (self->src, GST_BUFFER_OFFSET_NONE,
gst_video_format_get_size (self->fmt, self->width, self->height),
GST_PAD_CAPS (self->src), &outbuf)) != GST_FLOW_OK)
return ret;
for (l = pads->data; l; l = l->next) {
GstCollectData *cdata = l->data;
if (cdata->pad == self->sink0)
inbuf0 = gst_collect_pads_pop (pads, cdata);
else if (cdata->pad == self->sink1)
inbuf1 = gst_collect_pads_pop (pads, cdata);
else if (cdata->pad == self->sink2)
inbuf2 = gst_collect_pads_pop (pads, cdata);
}
if (!inbuf0 || !inbuf1 || (!inbuf2 && self->sink2))
goto eos;
gst_buffer_copy_metadata (outbuf, inbuf0,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
time = ((gdouble) GST_BUFFER_TIMESTAMP (outbuf)) / GST_SECOND;
klass->ftable->update2 (self->f0r_instance, time,
(const guint32 *) GST_BUFFER_DATA (inbuf0),
(const guint32 *) GST_BUFFER_DATA (inbuf1),
(inbuf2) ? (const guint32 *) GST_BUFFER_DATA (inbuf2) : NULL,
(guint32 *) GST_BUFFER_DATA (outbuf));
gst_buffer_unref (inbuf0);
gst_buffer_unref (inbuf1);
if (inbuf2)
gst_buffer_unref (inbuf2);
ret = gst_pad_push (self->src, outbuf);
return ret;
eos:
{
GST_DEBUG_OBJECT (self, "no data available, must be EOS");
gst_buffer_unref (outbuf);
if (inbuf0)
gst_buffer_unref (inbuf0);
if (inbuf1)
gst_buffer_unref (inbuf1);
if (inbuf2)
gst_buffer_unref (inbuf2);
gst_pad_push_event (self->src, gst_event_new_eos ());
return GST_FLOW_UNEXPECTED;
}
}
static void
gst_frei0r_mixer_class_init (GstFrei0rMixerClass * klass,
GstFrei0rMixerClassData * class_data)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstPadTemplate *templ;
GstCaps *caps;
gchar *author;
klass->ftable = &class_data->ftable;
klass->info = &class_data->info;
gobject_class->finalize = gst_frei0r_mixer_finalize;
gobject_class->set_property = gst_frei0r_mixer_set_property;
gobject_class->get_property = gst_frei0r_mixer_get_property;
klass->n_properties = klass->info->num_params;
klass->properties = g_new0 (GstFrei0rProperty, klass->n_properties);
gst_frei0r_klass_install_properties (gobject_class, klass->ftable,
klass->properties, klass->n_properties);
author =
g_strdup_printf
("Sebastian Dröge <sebastian.droege@collabora.co.uk>, %s",
class_data->info.author);
gst_element_class_set_details_simple (gstelement_class, class_data->info.name,
"Filter/Editor/Video", class_data->info.explanation, author);
g_free (author);
caps = gst_frei0r_caps_from_color_model (class_data->info.color_model);
templ =
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_ref (caps));
gst_element_class_add_pad_template (gstelement_class, templ);
templ =
gst_pad_template_new ("sink_0", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_ref (caps));
gst_element_class_add_pad_template (gstelement_class, templ);
templ =
gst_pad_template_new ("sink_1", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_ref (caps));
gst_element_class_add_pad_template (gstelement_class, templ);
if (klass->info->plugin_type == F0R_PLUGIN_TYPE_MIXER3) {
templ =
gst_pad_template_new ("sink_2", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_ref (caps));
gst_element_class_add_pad_template (gstelement_class, templ);
}
gst_caps_unref (caps);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_change_state);
}
static void
gst_frei0r_mixer_init (GstFrei0rMixer * self, GstFrei0rMixerClass * klass)
{
self->property_cache =
gst_frei0r_property_cache_init (klass->properties, klass->n_properties);
self->collect = gst_collect_pads_new ();
gst_collect_pads_set_function (self->collect,
(GstCollectPadsFunction) gst_frei0r_mixer_collected, self);
self->src =
gst_pad_new_from_template (gst_element_class_get_pad_template
(GST_ELEMENT_CLASS (klass), "src"), "src");
gst_pad_set_getcaps_function (self->src,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_get_caps));
gst_pad_set_setcaps_function (self->src,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_set_caps));
gst_pad_set_query_function (self->src,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_src_query));
gst_pad_set_event_function (self->src,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_src_event));
gst_element_add_pad (GST_ELEMENT_CAST (self), self->src);
self->sink0 =
gst_pad_new_from_template (gst_element_class_get_pad_template
(GST_ELEMENT_CLASS (klass), "sink_0"), "sink_0");
gst_pad_set_getcaps_function (self->sink0,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_get_caps));
gst_pad_set_setcaps_function (self->sink0,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_set_caps));
gst_pad_set_query_function (self->sink0,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_sink_query));
gst_collect_pads_add_pad (self->collect, self->sink0,
sizeof (GstCollectData));
self->collect_event = (GstPadEventFunction) GST_PAD_EVENTFUNC (self->sink0);
gst_pad_set_event_function (self->sink0,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_sink0_event));
gst_element_add_pad (GST_ELEMENT_CAST (self), self->sink0);
self->sink1 =
gst_pad_new_from_template (gst_element_class_get_pad_template
(GST_ELEMENT_CLASS (klass), "sink_1"), "sink_1");
gst_pad_set_getcaps_function (self->sink1,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_get_caps));
gst_pad_set_setcaps_function (self->sink1,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_set_caps));
gst_pad_set_query_function (self->sink0,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_sink_query));
gst_collect_pads_add_pad (self->collect, self->sink1,
sizeof (GstCollectData));
gst_element_add_pad (GST_ELEMENT_CAST (self), self->sink1);
if (klass->info->plugin_type == F0R_PLUGIN_TYPE_MIXER3) {
self->sink2 =
gst_pad_new_from_template (gst_element_class_get_pad_template
(GST_ELEMENT_CLASS (klass), "sink_2"), "sink_2");
gst_pad_set_getcaps_function (self->sink2,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_get_caps));
gst_pad_set_setcaps_function (self->sink2,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_set_caps));
gst_pad_set_query_function (self->sink0,
GST_DEBUG_FUNCPTR (gst_frei0r_mixer_sink_query));
gst_collect_pads_add_pad (self->collect, self->sink2,
sizeof (GstCollectData));
gst_element_add_pad (GST_ELEMENT_CAST (self), self->sink2);
}
}
gboolean
gst_frei0r_mixer_register (GstPlugin * plugin, const f0r_plugin_info_t * info,
const GstFrei0rFuncTable * ftable)
{
GTypeInfo typeinfo = {
sizeof (GstFrei0rMixerClass),
NULL,
NULL,
(GClassInitFunc) gst_frei0r_mixer_class_init,
NULL,
NULL,
sizeof (GstFrei0rMixer),
0,
(GInstanceInitFunc) gst_frei0r_mixer_init
};
GType type;
gchar *type_name, *tmp;
GstFrei0rMixerClassData *class_data;
gboolean ret = FALSE;
if (ftable->update2 == NULL)
return FALSE;
tmp = g_strdup_printf ("frei0r-mixer-%s", info->name);
type_name = g_ascii_strdown (tmp, -1);
g_free (tmp);
g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
if (g_type_from_name (type_name)) {
GST_WARNING ("Type '%s' already exists", type_name);
return FALSE;
}
class_data = g_new0 (GstFrei0rMixerClassData, 1);
memcpy (&class_data->info, info, sizeof (f0r_plugin_info_t));
memcpy (&class_data->ftable, ftable, sizeof (GstFrei0rFuncTable));
typeinfo.class_data = class_data;
type = g_type_register_static (GST_TYPE_ELEMENT, type_name, &typeinfo, 0);
ret = gst_element_register (plugin, type_name, GST_RANK_NONE, type);
g_free (type_name);
return ret;
}
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