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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1353 lines
38 KiB
C
1353 lines
38 KiB
C
/* Generic video mixer plugin
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*
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* GStreamer
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* Copyright (C) 2009 Julien Isorce <julien.isorce@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstcollectpads.h>
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#include <gst/controller/gstcontroller.h>
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#include <gst/video/video.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include "gstglmixer.h"
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#define GST_CAT_DEFAULT gst_gl_mixer_debug
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GST_DEBUG_CATEGORY (gst_gl_mixer_debug);
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#define GST_GL_MIXER_GET_STATE_LOCK(mix) \
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(GST_GL_MIXER(mix)->state_lock)
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#define GST_GL_MIXER_STATE_LOCK(mix) \
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(g_mutex_lock(GST_GL_MIXER_GET_STATE_LOCK (mix)))
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#define GST_GL_MIXER_STATE_UNLOCK(mix) \
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(g_mutex_unlock(GST_GL_MIXER_GET_STATE_LOCK (mix)))
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static void gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass);
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static void gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad);
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static void gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static gboolean gst_gl_mixer_src_event (GstPad * pad, GstEvent * event);
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static gboolean gst_gl_mixer_sink_event (GstPad * pad, GstEvent * event);
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enum
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{
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PROP_PAD_0
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};
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G_DEFINE_TYPE (GstGLMixerPad, gst_gl_mixer_pad, GST_TYPE_PAD);
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static void
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gst_gl_mixer_pad_class_init (GstGLMixerPadClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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gobject_class->set_property = gst_gl_mixer_pad_set_property;
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gobject_class->get_property = gst_gl_mixer_pad_get_property;
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}
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static void
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gst_gl_mixer_pad_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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//GstGLMixerPad *pad = GST_GL_MIXER_PAD (object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gl_mixer_pad_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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//GstGLMixerPad *pad = GST_GL_MIXER_PAD (object);
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switch (prop_id) {
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gl_mixer_set_master_geometry (GstGLMixer * mix)
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{
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GSList *walk = mix->sinkpads;
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gint fps_n = 0;
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gint fps_d = 0;
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GstGLMixerPad *master = NULL;
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while (walk) {
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GstGLMixerPad *mixpad = GST_GL_MIXER_PAD (walk->data);
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walk = g_slist_next (walk);
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/* If mix framerate < mixpad framerate, using fractions */
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GST_DEBUG_OBJECT (mix, "comparing framerate %d/%d to mixpad's %d/%d",
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fps_n, fps_d, mixpad->fps_n, mixpad->fps_d);
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if ((!fps_n && !fps_d) ||
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((gint64) fps_n * mixpad->fps_d < (gint64) mixpad->fps_n * fps_d)) {
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fps_n = mixpad->fps_n;
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fps_d = mixpad->fps_d;
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GST_DEBUG_OBJECT (mix, "becomes the master pad");
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master = mixpad;
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}
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}
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/* set results */
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if (mix->master != master || mix->fps_n != fps_n || mix->fps_d != fps_d) {
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mix->setcaps = TRUE;
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mix->sendseg = TRUE;
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mix->master = master;
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mix->fps_n = fps_n;
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mix->fps_d = fps_d;
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}
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}
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static gboolean
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gst_gl_mixer_pad_sink_setcaps (GstPad * pad, GstCaps * vscaps)
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{
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GstGLMixer *mix = GST_GL_MIXER (gst_pad_get_parent (pad));
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GstGLMixerPad *mixpad = GST_GL_MIXER_PAD (pad);
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GstStructure *structure = gst_caps_get_structure (vscaps, 0);
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gint width = 0;
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gint height = 0;
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gboolean ret = FALSE;
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const GValue *framerate = gst_structure_get_value (structure, "framerate");
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GST_INFO_OBJECT (mix, "Setting caps %" GST_PTR_FORMAT, vscaps);
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if (!gst_structure_get_int (structure, "width", &width) ||
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!gst_structure_get_int (structure, "height", &height) || !framerate)
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goto beach;
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GST_GL_MIXER_STATE_LOCK (mix);
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mixpad->fps_n = gst_value_get_fraction_numerator (framerate);
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mixpad->fps_d = gst_value_get_fraction_denominator (framerate);
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mixpad->width = width;
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mixpad->height = height;
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gst_gl_mixer_set_master_geometry (mix);
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GST_GL_MIXER_STATE_UNLOCK (mix);
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ret = TRUE;
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beach:
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gst_object_unref (mix);
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return ret;
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}
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static void
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gst_gl_mixer_pad_init (GstGLMixerPad * mixerpad)
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{
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gst_pad_set_setcaps_function (GST_PAD (mixerpad),
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gst_gl_mixer_pad_sink_setcaps);
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mixerpad->display = NULL;
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}
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/* GLMixer signals and args */
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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PROP_0
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};
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static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
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);
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static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink_%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
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);
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static void gst_gl_mixer_finalize (GObject * object);
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static GstCaps *gst_gl_mixer_getcaps (GstPad * pad);
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static gboolean gst_gl_mixer_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_gl_mixer_query (GstPad * pad, GstQuery * query);
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static GstFlowReturn gst_gl_mixer_collected (GstCollectPads * pads,
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GstGLMixer * mix);
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static GstPad *gst_gl_mixer_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name);
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static void gst_gl_mixer_release_pad (GstElement * element, GstPad * pad);
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static void gst_gl_mixer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gl_mixer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_gl_mixer_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_gl_mixer_child_proxy_init (gpointer g_iface,
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gpointer iface_data);
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static void _do_init (GType object_type);
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GST_BOILERPLATE_FULL (GstGLMixer, gst_gl_mixer, GstElement,
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GST_TYPE_ELEMENT, _do_init);
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static void
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_do_init (GType object_type)
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{
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static const GInterfaceInfo child_proxy_info = {
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(GInterfaceInitFunc) gst_gl_mixer_child_proxy_init,
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NULL,
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NULL
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};
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GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "glmixer", 0, "opengl mixer");
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g_type_add_interface_static (object_type, GST_TYPE_CHILD_PROXY,
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&child_proxy_info);
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GST_INFO ("GstChildProxy interface registered");
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}
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static GstObject *
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gst_gl_mixer_child_proxy_get_child_by_index (GstChildProxy * child_proxy,
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guint index)
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{
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GstGLMixer *mix = GST_GL_MIXER (child_proxy);
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GstObject *obj;
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GST_GL_MIXER_STATE_LOCK (mix);
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if ((obj = g_slist_nth_data (mix->sinkpads, index)))
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gst_object_ref (obj);
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GST_GL_MIXER_STATE_UNLOCK (mix);
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return obj;
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}
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static guint
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gst_gl_mixer_child_proxy_get_children_count (GstChildProxy * child_proxy)
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{
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guint count = 0;
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GstGLMixer *mix = GST_GL_MIXER (child_proxy);
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GST_GL_MIXER_STATE_LOCK (mix);
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count = mix->numpads;
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GST_GL_MIXER_STATE_UNLOCK (mix);
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GST_INFO_OBJECT (mix, "Children Count: %d", count);
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return count;
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}
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static void
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gst_gl_mixer_child_proxy_init (gpointer g_iface, gpointer iface_data)
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{
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GstChildProxyInterface *iface = g_iface;
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GST_INFO ("intializing child proxy interface");
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iface->get_child_by_index = gst_gl_mixer_child_proxy_get_child_by_index;
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iface->get_children_count = gst_gl_mixer_child_proxy_get_children_count;
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}
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static void
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gst_gl_mixer_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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}
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static void
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gst_gl_mixer_class_init (GstGLMixerClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_gl_mixer_finalize);
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gobject_class->get_property = gst_gl_mixer_get_property;
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gobject_class->set_property = gst_gl_mixer_set_property;
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gstelement_class->request_new_pad =
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GST_DEBUG_FUNCPTR (gst_gl_mixer_request_new_pad);
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gstelement_class->release_pad = GST_DEBUG_FUNCPTR (gst_gl_mixer_release_pad);
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_gl_mixer_change_state);
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/* Register the pad class */
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(void) (GST_TYPE_GL_MIXER_PAD);
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klass->set_caps = NULL;
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}
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static void
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gst_gl_mixer_collect_free (GstGLMixerCollect * mixcol)
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{
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if (mixcol->buffer) {
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gst_buffer_unref (mixcol->buffer);
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mixcol->buffer = NULL;
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}
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}
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static void
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gst_gl_mixer_reset (GstGLMixer * mix)
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{
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GSList *walk;
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mix->width = 0;
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mix->height = 0;
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mix->fps_n = 0;
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mix->fps_d = 0;
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mix->setcaps = FALSE;
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mix->sendseg = FALSE;
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mix->segment_position = 0;
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mix->segment_rate = 1.0;
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mix->last_ts = 0;
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/* clean up collect data */
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walk = mix->collect->data;
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while (walk) {
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GstGLMixerCollect *data = (GstGLMixerCollect *) walk->data;
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gst_gl_mixer_collect_free (data);
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walk = g_slist_next (walk);
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}
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mix->next_sinkpad = 0;
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}
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static void
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gst_gl_mixer_init (GstGLMixer * mix, GstGLMixerClass * g_class)
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{
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GstElementClass *klass = GST_ELEMENT_GET_CLASS (mix);
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mix->srcpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
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"src"), "src");
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gst_pad_set_getcaps_function (GST_PAD (mix->srcpad),
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GST_DEBUG_FUNCPTR (gst_gl_mixer_getcaps));
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gst_pad_set_setcaps_function (GST_PAD (mix->srcpad),
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GST_DEBUG_FUNCPTR (gst_gl_mixer_setcaps));
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gst_pad_set_query_function (GST_PAD (mix->srcpad),
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GST_DEBUG_FUNCPTR (gst_gl_mixer_query));
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gst_pad_set_event_function (GST_PAD (mix->srcpad),
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GST_DEBUG_FUNCPTR (gst_gl_mixer_src_event));
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gst_element_add_pad (GST_ELEMENT (mix), mix->srcpad);
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mix->collect = gst_collect_pads_new ();
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gst_collect_pads_set_function (mix->collect,
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(GstCollectPadsFunction) GST_DEBUG_FUNCPTR (gst_gl_mixer_collected), mix);
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mix->state_lock = g_mutex_new ();
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mix->array_buffers = 0;
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mix->display = NULL;
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mix->fbo = 0;
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mix->depthbuffer = 0;
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/* initialize variables */
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gst_gl_mixer_reset (mix);
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}
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static void
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gst_gl_mixer_finalize (GObject * object)
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{
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GstGLMixer *mix = GST_GL_MIXER (object);
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gst_object_unref (mix->collect);
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g_mutex_free (mix->state_lock);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_gl_mixer_query_duration (GstGLMixer * mix, GstQuery * query)
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{
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gint64 max;
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gboolean res;
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GstFormat format;
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GstIterator *it;
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gboolean done;
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/* parse format */
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gst_query_parse_duration (query, &format, NULL);
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max = -1;
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res = TRUE;
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done = FALSE;
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/* Take maximum of all durations */
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it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix));
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while (!done) {
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GstIteratorResult ires;
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gpointer item;
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ires = gst_iterator_next (it, &item);
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switch (ires) {
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case GST_ITERATOR_DONE:
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done = TRUE;
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break;
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case GST_ITERATOR_OK:
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{
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GstPad *pad = GST_PAD_CAST (item);
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gint64 duration;
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/* ask sink peer for duration */
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res &= gst_pad_query_peer_duration (pad, &format, &duration);
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/* take max from all valid return values */
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if (res) {
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/* valid unknown length, stop searching */
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if (duration == -1) {
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max = duration;
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done = TRUE;
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}
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/* else see if bigger than current max */
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else if (duration > max)
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max = duration;
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}
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gst_object_unref (pad);
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break;
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}
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case GST_ITERATOR_RESYNC:
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max = -1;
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res = TRUE;
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gst_iterator_resync (it);
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break;
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default:
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res = FALSE;
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done = TRUE;
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break;
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}
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}
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gst_iterator_free (it);
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if (res) {
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/* and store the max */
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GST_DEBUG_OBJECT (mix, "Total duration in format %s: %"
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GST_TIME_FORMAT, gst_format_get_name (format), GST_TIME_ARGS (max));
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gst_query_set_duration (query, format, max);
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}
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return res;
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}
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static gboolean
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gst_gl_mixer_query_latency (GstGLMixer * mix, GstQuery * query)
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{
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GstClockTime min, max;
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gboolean live;
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gboolean res;
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GstIterator *it;
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gboolean done;
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res = TRUE;
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done = FALSE;
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live = FALSE;
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min = 0;
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max = GST_CLOCK_TIME_NONE;
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/* Take maximum of all latency values */
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it = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mix));
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while (!done) {
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GstIteratorResult ires;
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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 (mix, "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_gl_mixer_query (GstPad * pad, GstQuery * query)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (gst_pad_get_parent (pad));
|
|
gboolean res = FALSE;
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_POSITION:
|
|
{
|
|
GstFormat format;
|
|
|
|
gst_query_parse_position (query, &format, NULL);
|
|
|
|
switch (format) {
|
|
case GST_FORMAT_TIME:
|
|
/* FIXME, bring to stream time, might be tricky */
|
|
gst_query_set_position (query, format, mix->last_ts);
|
|
res = TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case GST_QUERY_DURATION:
|
|
res = gst_gl_mixer_query_duration (mix, query);
|
|
break;
|
|
case GST_QUERY_LATENCY:
|
|
res = gst_gl_mixer_query_latency (mix, query);
|
|
break;
|
|
|
|
case GST_QUERY_CUSTOM:
|
|
{
|
|
/* mix is a sink in terms of gl chain, so we are sharing the gldisplay that
|
|
* comes from src pad with every display of the sink pads */
|
|
GSList *walk = mix->sinkpads;
|
|
GstStructure *structure = gst_query_get_structure (query);
|
|
|
|
res =
|
|
g_strcmp0 (gst_element_get_name (mix),
|
|
gst_structure_get_name (structure)) == 0;
|
|
|
|
if (!res) {
|
|
GstGLDisplay *foreign_display = NULL;
|
|
gulong foreign_gl_context = 0;
|
|
|
|
if (mix->display) {
|
|
/* this gl filter is a sink in terms of the gl chain */
|
|
foreign_display = mix->display;
|
|
} else {
|
|
/* at least one gl element is after in our gl chain */
|
|
/* id_value is set by upstream element of itself when going
|
|
* to paused state */
|
|
const GValue *id_value =
|
|
gst_structure_get_value (structure, "gstgldisplay");
|
|
foreign_display = GST_GL_DISPLAY (g_value_get_pointer (id_value));
|
|
}
|
|
|
|
foreign_gl_context =
|
|
gst_gl_display_get_internal_gl_context (foreign_display);
|
|
|
|
/* iterate on each sink pad until reaching the gl element
|
|
* that requested the query */
|
|
while (!res && walk) {
|
|
GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data);
|
|
GstPad *peer = gst_pad_get_peer (GST_PAD_CAST (sink_pad));
|
|
walk = g_slist_next (walk);
|
|
|
|
g_assert (sink_pad->display != NULL);
|
|
|
|
gst_gl_display_activate_gl_context (foreign_display, FALSE);
|
|
|
|
res =
|
|
gst_gl_display_create_context (sink_pad->display,
|
|
foreign_gl_context);
|
|
|
|
gst_gl_display_activate_gl_context (foreign_display, TRUE);
|
|
|
|
if (res)
|
|
gst_structure_set (structure, "gstgldisplay", G_TYPE_POINTER,
|
|
sink_pad->display, NULL);
|
|
else
|
|
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND,
|
|
(GST_GL_DISPLAY_ERR_MSG (sink_pad->display)), (NULL));
|
|
|
|
/* does not work:
|
|
* res = gst_pad_query_default (GST_PAD_CAST (sink_pad), query);*/
|
|
res = gst_pad_query (peer, query);
|
|
gst_object_unref (peer);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
/* FIXME, needs a custom query handler because we have multiple
|
|
* sinkpads, send to the master pad until then */
|
|
res = gst_pad_query (GST_PAD_CAST (mix->master), query);
|
|
break;
|
|
}
|
|
|
|
gst_object_unref (mix);
|
|
return res;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_gl_mixer_getcaps (GstPad * pad)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (gst_pad_get_parent (pad));
|
|
GstCaps *caps = gst_caps_copy (gst_pad_get_pad_template_caps (mix->srcpad));
|
|
GstStructure *structure = gst_caps_get_structure (caps, 0);
|
|
|
|
gst_structure_set (structure, "width", G_TYPE_INT, 8000, NULL);
|
|
gst_structure_set (structure, "height", G_TYPE_INT, /*G_MAXINT */ 6000, NULL);
|
|
if (mix->fps_d != 0)
|
|
gst_structure_set (structure, "framerate", GST_TYPE_FRACTION, mix->fps_n,
|
|
mix->fps_d, NULL);
|
|
|
|
gst_object_unref (mix);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_setcaps (GstPad * pad, GstCaps * caps)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (gst_pad_get_parent_element (pad));
|
|
GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
GstStructure *structure = gst_caps_get_structure (caps, 0);
|
|
gint width = 0;
|
|
gint height = 0;
|
|
|
|
GST_INFO_OBJECT (mix, "set src caps: %" GST_PTR_FORMAT, caps);
|
|
|
|
if (!gst_structure_get_int (structure, "width", &width) ||
|
|
!gst_structure_get_int (structure, "height", &height)) {
|
|
gst_object_unref (mix);
|
|
return FALSE;
|
|
}
|
|
|
|
GST_GL_MIXER_STATE_LOCK (mix);
|
|
|
|
mix->width = width;
|
|
mix->height = height;
|
|
|
|
GST_GL_MIXER_STATE_UNLOCK (mix);
|
|
|
|
if (!gst_gl_display_gen_fbo (mix->display, mix->width, mix->height,
|
|
&mix->fbo, &mix->depthbuffer)) {
|
|
GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND,
|
|
(GST_GL_DISPLAY_ERR_MSG (mix->display)), (NULL));
|
|
gst_object_unref (mix);
|
|
return FALSE;
|
|
}
|
|
|
|
if (mixer_class->set_caps)
|
|
mixer_class->set_caps (mix, caps);
|
|
|
|
gst_object_unref (mix);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstPad *
|
|
gst_gl_mixer_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * req_name)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (element);
|
|
GstGLMixerPad *mixpad = NULL;
|
|
GstElementClass *klass = GST_ELEMENT_GET_CLASS (element);
|
|
|
|
if (templ == gst_element_class_get_pad_template (klass, "sink_%d")) {
|
|
gint serial = 0;
|
|
gchar *name = NULL;
|
|
GstGLMixerCollect *mixcol = NULL;
|
|
|
|
if (req_name == NULL || strlen (req_name) < 6) {
|
|
/* no name given when requesting the pad, use next available int */
|
|
serial = mix->next_sinkpad++;
|
|
} else {
|
|
/* parse serial number from requested padname */
|
|
serial = atoi (&req_name[5]);
|
|
if (serial >= mix->next_sinkpad)
|
|
mix->next_sinkpad = serial + 1;
|
|
}
|
|
/* create new pad with the name */
|
|
name = g_strdup_printf ("sink_%d", serial);
|
|
mixpad = g_object_new (GST_TYPE_GL_MIXER_PAD, "name", name, "direction",
|
|
templ->direction, "template", templ, NULL);
|
|
g_free (name);
|
|
|
|
GST_GL_MIXER_STATE_LOCK (mix);
|
|
|
|
mixcol = (GstGLMixerCollect *)
|
|
gst_collect_pads_add_pad (mix->collect, GST_PAD (mixpad),
|
|
sizeof (GstGLMixerCollect));
|
|
|
|
/* 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 */
|
|
mix->collect_event =
|
|
(GstPadEventFunction) GST_PAD_EVENTFUNC (GST_PAD (mixpad));
|
|
gst_pad_set_event_function (GST_PAD (mixpad),
|
|
GST_DEBUG_FUNCPTR (gst_gl_mixer_sink_event));
|
|
|
|
/* Keep track of each other */
|
|
mixcol->mixpad = mixpad;
|
|
mixpad->mixcol = mixcol;
|
|
|
|
/* Keep an internal list of mixpads for zordering */
|
|
mix->sinkpads = g_slist_append (mix->sinkpads, mixpad);
|
|
mix->numpads++;
|
|
GST_GL_MIXER_STATE_UNLOCK (mix);
|
|
} else {
|
|
g_warning ("glmixer: this is not our template!");
|
|
return NULL;
|
|
}
|
|
|
|
/* add the pad to the element */
|
|
gst_element_add_pad (element, GST_PAD (mixpad));
|
|
gst_child_proxy_child_added (GST_OBJECT (mix), GST_OBJECT (mixpad));
|
|
|
|
return GST_PAD (mixpad);
|
|
}
|
|
|
|
static void
|
|
gst_gl_mixer_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (element);
|
|
GstGLMixerPad *mixpad = NULL;
|
|
|
|
GST_GL_MIXER_STATE_LOCK (mix);
|
|
if (G_UNLIKELY (g_slist_find (mix->sinkpads, pad) == NULL)) {
|
|
g_warning ("Unknown pad %s", GST_PAD_NAME (pad));
|
|
goto error;
|
|
}
|
|
|
|
mixpad = GST_GL_MIXER_PAD (pad);
|
|
|
|
mix->sinkpads = g_slist_remove (mix->sinkpads, pad);
|
|
gst_gl_mixer_collect_free (mixpad->mixcol);
|
|
gst_collect_pads_remove_pad (mix->collect, pad);
|
|
gst_child_proxy_child_removed (GST_OBJECT (mix), GST_OBJECT (mixpad));
|
|
/* determine possibly new geometry and master */
|
|
gst_gl_mixer_set_master_geometry (mix);
|
|
mix->numpads--;
|
|
GST_GL_MIXER_STATE_UNLOCK (mix);
|
|
|
|
gst_element_remove_pad (element, pad);
|
|
return;
|
|
error:
|
|
GST_GL_MIXER_STATE_UNLOCK (mix);
|
|
}
|
|
|
|
/* try to get a buffer on all pads. As long as the queued value is
|
|
* negative, we skip buffers */
|
|
static gboolean
|
|
gst_gl_mixer_fill_queues (GstGLMixer * mix)
|
|
{
|
|
GSList *walk = NULL;
|
|
gboolean eos = TRUE;
|
|
|
|
g_return_val_if_fail (GST_IS_GL_MIXER (mix), FALSE);
|
|
|
|
/* try to make sure we have a buffer from each usable pad first */
|
|
walk = mix->collect->data;
|
|
while (walk) {
|
|
GstCollectData *data = (GstCollectData *) walk->data;
|
|
GstGLMixerCollect *mixcol = (GstGLMixerCollect *) data;
|
|
GstGLMixerPad *mixpad = mixcol->mixpad;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
if (mixcol->buffer == NULL) {
|
|
GstBuffer *buf = NULL;
|
|
|
|
GST_LOG_OBJECT (mix, "we need a new buffer");
|
|
|
|
buf = gst_collect_pads_peek (mix->collect, data);
|
|
|
|
if (buf) {
|
|
guint64 duration;
|
|
|
|
GST_LOG_OBJECT (mix, "we have a buffer !");
|
|
|
|
mixcol->buffer = buf;
|
|
|
|
duration = GST_BUFFER_DURATION (mixcol->buffer);
|
|
/* no duration on the buffer, use the framerate */
|
|
if (!GST_CLOCK_TIME_IS_VALID (duration)) {
|
|
if (mixpad->fps_n == 0) {
|
|
duration = GST_CLOCK_TIME_NONE;
|
|
} else {
|
|
duration =
|
|
gst_util_uint64_scale_int (GST_SECOND, mixpad->fps_d,
|
|
mixpad->fps_n);
|
|
}
|
|
}
|
|
if (GST_CLOCK_TIME_IS_VALID (duration))
|
|
mixpad->queued += duration;
|
|
else if (!mixpad->queued)
|
|
mixpad->queued = GST_CLOCK_TIME_NONE;
|
|
} else {
|
|
GST_LOG_OBJECT (mix, "pop returned a NULL buffer");
|
|
}
|
|
}
|
|
if (mix->sendseg && (mixpad == mix->master)) {
|
|
GstEvent *event;
|
|
gint64 stop, start;
|
|
GstSegment *segment = &data->segment;
|
|
|
|
/* FIXME, use rate/applied_rate as set on all sinkpads.
|
|
* - currently we just set rate as received from last seek-event
|
|
* We could potentially figure out the duration as well using
|
|
* the current segment positions and the stated stop positions.
|
|
* Also we just start from stream time 0 which is rather
|
|
* weird. For non-synchronized mixing, the time should be
|
|
* the min of the stream times of all received segments,
|
|
* rationale being that the duration is at least going to
|
|
* be as long as the earliest stream we start mixing. This
|
|
* would also be correct for synchronized mixing but then
|
|
* the later streams would be delayed until the stream times
|
|
* match.
|
|
*/
|
|
GST_INFO_OBJECT (mix, "_sending play segment");
|
|
|
|
start = segment->accum;
|
|
|
|
/* get the duration of the segment if we can and add it to the accumulated
|
|
* time on the segment. */
|
|
if (segment->stop != -1 && segment->start != -1)
|
|
stop = start + (segment->stop - segment->start);
|
|
else
|
|
stop = -1;
|
|
|
|
event = gst_event_new_new_segment_full (FALSE, segment->rate, 1.0,
|
|
segment->format, start, stop, start + mix->segment_position);
|
|
gst_pad_push_event (mix->srcpad, event);
|
|
mix->sendseg = FALSE;
|
|
}
|
|
|
|
if (mixcol->buffer != NULL && GST_CLOCK_TIME_IS_VALID (mixpad->queued)) {
|
|
/* got a buffer somewhere so we're not eos */
|
|
eos = FALSE;
|
|
}
|
|
}
|
|
|
|
return eos;
|
|
}
|
|
|
|
static void
|
|
gst_gl_mixer_process_buffers (GstGLMixer * mix, GstBuffer * outbuf)
|
|
{
|
|
GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
GSList *walk = mix->sinkpads;
|
|
gint array_index = 0;
|
|
|
|
while (walk) { /* We walk with this list because it's ordered */
|
|
GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
|
|
GstGLMixerCollect *mixcol = pad->mixcol;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
if (mixcol->buffer != NULL) {
|
|
GstClockTime timestamp;
|
|
gint64 stream_time;
|
|
GstSegment *seg;
|
|
|
|
seg = &mixcol->collect.segment;
|
|
|
|
timestamp = GST_BUFFER_TIMESTAMP (mixcol->buffer);
|
|
|
|
stream_time =
|
|
gst_segment_to_stream_time (seg, GST_FORMAT_TIME, timestamp);
|
|
|
|
/* sync object properties on stream time */
|
|
if (GST_CLOCK_TIME_IS_VALID (stream_time))
|
|
gst_object_sync_values (G_OBJECT (pad), stream_time);
|
|
|
|
/* put buffer into array */
|
|
mix->array_buffers->pdata[array_index] = mixcol->buffer;
|
|
|
|
if (pad == mix->master) {
|
|
gint64 running_time;
|
|
|
|
running_time =
|
|
gst_segment_to_running_time (seg, GST_FORMAT_TIME, timestamp);
|
|
|
|
/* outgoing buffers need the running_time */
|
|
GST_BUFFER_TIMESTAMP (outbuf) = running_time;
|
|
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (mixcol->buffer);
|
|
|
|
mix->last_ts = running_time;
|
|
if (GST_BUFFER_DURATION_IS_VALID (outbuf))
|
|
mix->last_ts += GST_BUFFER_DURATION (outbuf);
|
|
}
|
|
}
|
|
++array_index;
|
|
}
|
|
|
|
mix_class->process_buffers (mix, mix->array_buffers, outbuf);
|
|
}
|
|
|
|
/* remove buffers from the queue that were expired in the
|
|
* interval of the master, we also prepare the queued value
|
|
* in the pad so that we can skip and fill buffers later on */
|
|
static void
|
|
gst_gl_mixer_update_queues (GstGLMixer * mix)
|
|
{
|
|
GSList *walk;
|
|
gint64 interval;
|
|
|
|
interval = mix->master->queued;
|
|
if (interval <= 0) {
|
|
if (mix->fps_n == 0) {
|
|
interval = G_MAXINT64;
|
|
} else {
|
|
interval = GST_SECOND * mix->fps_d / mix->fps_n;
|
|
}
|
|
GST_LOG_OBJECT (mix, "set interval to %" G_GINT64_FORMAT " nanoseconds",
|
|
interval);
|
|
}
|
|
|
|
walk = mix->sinkpads;
|
|
while (walk) {
|
|
GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
|
|
GstGLMixerCollect *mixcol = pad->mixcol;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
if (mixcol->buffer != NULL) {
|
|
pad->queued -= interval;
|
|
GST_LOG_OBJECT (pad, "queued now %" G_GINT64_FORMAT, pad->queued);
|
|
if (pad->queued <= 0) {
|
|
GstBuffer *buffer =
|
|
gst_collect_pads_pop (mix->collect, &mixcol->collect);
|
|
GST_LOG_OBJECT (pad, "unreffing buffer");
|
|
if (buffer)
|
|
gst_buffer_unref (buffer);
|
|
else
|
|
GST_WARNING_OBJECT (pad,
|
|
"Buffer was removed by GstCollectPads in the meantime");
|
|
gst_buffer_unref (mixcol->buffer);
|
|
mixcol->buffer = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_gl_mixer_collected (GstCollectPads * pads, GstGLMixer * mix)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstBuffer *outbuf = NULL;
|
|
GstGLBuffer *gl_outbuf = NULL;
|
|
gboolean eos = FALSE;
|
|
gint width = 0;
|
|
gint height = 0;
|
|
|
|
g_return_val_if_fail (GST_IS_GL_MIXER (mix), GST_FLOW_ERROR);
|
|
|
|
if (mix->width == 0) {
|
|
GstCaps *newcaps = gst_caps_make_writable
|
|
(gst_pad_get_negotiated_caps (GST_PAD (mix->master)));
|
|
|
|
gst_pad_set_caps (mix->srcpad, newcaps);
|
|
}
|
|
|
|
GST_LOG_OBJECT (mix, "all pads are collected");
|
|
GST_GL_MIXER_STATE_LOCK (mix);
|
|
|
|
eos = gst_gl_mixer_fill_queues (mix);
|
|
|
|
if (eos) {
|
|
/* Push EOS downstream */
|
|
GST_LOG_OBJECT (mix, "all our sinkpads are EOS, pushing downstream");
|
|
gst_pad_push_event (mix->srcpad, gst_event_new_eos ());
|
|
ret = GST_FLOW_WRONG_STATE;
|
|
goto error;
|
|
}
|
|
|
|
/* Calculating out buffer size from input size */
|
|
ret = gst_gl_buffer_parse_caps (GST_PAD_CAPS (mix->srcpad), &width, &height);
|
|
|
|
if (!ret)
|
|
goto error;
|
|
|
|
gl_outbuf = gst_gl_buffer_new (mix->display, mix->width, mix->height);
|
|
|
|
outbuf = GST_BUFFER (gl_outbuf);
|
|
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mix->srcpad));
|
|
|
|
gst_gl_mixer_process_buffers (mix, outbuf);
|
|
|
|
gst_gl_mixer_update_queues (mix);
|
|
GST_GL_MIXER_STATE_UNLOCK (mix);
|
|
|
|
ret = gst_pad_push (mix->srcpad, outbuf);
|
|
|
|
beach:
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
error:
|
|
{
|
|
if (outbuf)
|
|
gst_buffer_unref (outbuf);
|
|
|
|
GST_GL_MIXER_STATE_UNLOCK (mix);
|
|
goto beach;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* forwards the event to all sinkpads, takes ownership of the
|
|
* event
|
|
*
|
|
* Returns: TRUE if the event could be forwarded on all
|
|
* sinkpads.
|
|
*/
|
|
static gboolean
|
|
forward_event (GstGLMixer * mix, GstEvent * event)
|
|
{
|
|
GstIterator *it;
|
|
GValue vret = { 0 };
|
|
|
|
GST_LOG_OBJECT (mix, "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 (mix));
|
|
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_gl_mixer_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstGLMixer *mix = GST_GL_MIXER (gst_pad_get_parent (pad));
|
|
gboolean result;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_QOS:
|
|
/* QoS might be tricky */
|
|
result = FALSE;
|
|
break;
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
GstSeekFlags flags;
|
|
GstSeekType curtype;
|
|
gint64 cur;
|
|
|
|
/* parse the seek parameters */
|
|
gst_event_parse_seek (event, NULL, NULL, &flags, &curtype,
|
|
&cur, 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 (mix->collect, TRUE);
|
|
|
|
/* flushing seek, start flush downstream, the flush will be done
|
|
* when all pads received a FLUSH_STOP. */
|
|
gst_pad_push_event (mix->srcpad, gst_event_new_flush_start ());
|
|
}
|
|
|
|
/* now wait for the collected to be finished and mark a new
|
|
* segment */
|
|
GST_OBJECT_LOCK (mix->collect);
|
|
if (curtype == GST_SEEK_TYPE_SET)
|
|
mix->segment_position = cur;
|
|
else
|
|
mix->segment_position = 0;
|
|
mix->sendseg = TRUE;
|
|
GST_OBJECT_UNLOCK (mix->collect);
|
|
|
|
result = forward_event (mix, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_NAVIGATION:
|
|
/* navigation is rather pointless. */
|
|
result = FALSE;
|
|
break;
|
|
default:
|
|
/* just forward the rest for now */
|
|
result = forward_event (mix, event);
|
|
break;
|
|
}
|
|
gst_object_unref (mix);
|
|
|
|
return result;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mixer_sink_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
GstGLMixerPad *vpad = GST_GL_MIXER_PAD (pad);
|
|
GstGLMixer *videomixer = GST_GL_MIXER (gst_pad_get_parent (pad));
|
|
gboolean ret;
|
|
|
|
GST_DEBUG_OBJECT (pad, "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_FLUSH_STOP:
|
|
/* mark a pending new segment. This event is synchronized
|
|
* with the streaming thread so we can safely update the
|
|
* variable without races. It's somewhat weird because we
|
|
* assume the collectpads forwarded the FLUSH_STOP past us
|
|
* and downstream (using our source pad, the bastard!).
|
|
*/
|
|
videomixer->sendseg = TRUE;
|
|
|
|
/* Reset pad state after FLUSH_STOP */
|
|
if (vpad->mixcol->buffer)
|
|
gst_buffer_unref (vpad->mixcol->buffer);
|
|
vpad->mixcol->buffer = NULL;
|
|
vpad->queued = 0;
|
|
break;
|
|
case GST_EVENT_NEWSEGMENT:
|
|
videomixer->sendseg = TRUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* now GstCollectPads can take care of the rest, e.g. EOS */
|
|
ret = videomixer->collect_event (pad, event);
|
|
|
|
gst_object_unref (videomixer);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void
|
|
gst_gl_mixer_get_property (GObject * object,
|
|
guint prop_id, GValue * value, GParamSpec * pspec)
|
|
{
|
|
//GstGLMixer *mix = GST_GL_MIXER (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_gl_mixer_set_property (GObject * object,
|
|
guint prop_id, const GValue * value, GParamSpec * pspec)
|
|
{
|
|
//GstGLMixer *mix = GST_GL_MIXER (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_gl_mixer_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstGLMixer *mix;
|
|
GstStateChangeReturn ret;
|
|
GstGLMixerClass *mixer_class;
|
|
|
|
g_return_val_if_fail (GST_IS_GL_MIXER (element), GST_STATE_CHANGE_FAILURE);
|
|
|
|
mix = GST_GL_MIXER (element);
|
|
mixer_class = GST_GL_MIXER_GET_CLASS (mix);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
{
|
|
GSList *walk = mix->sinkpads;
|
|
gint i = 0;
|
|
|
|
GstElement *parent = GST_ELEMENT (gst_element_get_parent (mix));
|
|
GstStructure *structure = NULL;
|
|
GstQuery *query = NULL;
|
|
gboolean isPerformed = FALSE;
|
|
|
|
if (!parent) {
|
|
GST_ELEMENT_ERROR (mix, CORE, STATE_CHANGE, (NULL),
|
|
("A parent bin is required"));
|
|
return FALSE;
|
|
}
|
|
|
|
structure = gst_structure_new (gst_element_get_name (mix), NULL);
|
|
query = gst_query_new_application (GST_QUERY_CUSTOM, structure);
|
|
|
|
/* retrieve the gldisplay that is owned by gl elements after the gl mixer */
|
|
isPerformed = gst_element_query (parent, query);
|
|
|
|
if (isPerformed) {
|
|
const GValue *id_value =
|
|
gst_structure_get_value (structure, "gstgldisplay");
|
|
if (G_VALUE_HOLDS_POINTER (id_value))
|
|
/* at least one gl element is after in our gl chain */
|
|
mix->display =
|
|
g_object_ref (GST_GL_DISPLAY (g_value_get_pointer (id_value)));
|
|
else {
|
|
/* this gl filter is a sink in terms of the gl chain */
|
|
mix->display = gst_gl_display_new ();
|
|
gst_gl_display_create_context (mix->display, 0);
|
|
}
|
|
}
|
|
|
|
gst_query_unref (query);
|
|
gst_object_unref (GST_OBJECT (parent));
|
|
|
|
/* instanciate a gldisplay for each sink pad */
|
|
while (walk) {
|
|
GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data);
|
|
walk = g_slist_next (walk);
|
|
sink_pad->display = gst_gl_display_new ();
|
|
}
|
|
mix->array_buffers = g_ptr_array_sized_new (mix->next_sinkpad);
|
|
for (i = 0; i < mix->next_sinkpad; ++i) {
|
|
g_ptr_array_add (mix->array_buffers, NULL);
|
|
}
|
|
GST_LOG_OBJECT (mix, "starting collectpads");
|
|
gst_collect_pads_start (mix->collect);
|
|
break;
|
|
}
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
{
|
|
GSList *walk = mix->sinkpads;
|
|
GST_LOG_OBJECT (mix, "stopping collectpads");
|
|
gst_collect_pads_stop (mix->collect);
|
|
g_ptr_array_free (mix->array_buffers, TRUE);
|
|
while (walk) {
|
|
GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data);
|
|
walk = g_slist_next (walk);
|
|
if (sink_pad->display)
|
|
gst_gl_display_activate_gl_context (sink_pad->display, FALSE);
|
|
}
|
|
if (mixer_class->reset)
|
|
mixer_class->reset (mix);
|
|
if (mix->fbo) {
|
|
gst_gl_display_del_fbo (mix->display, mix->fbo, mix->depthbuffer);
|
|
mix->fbo = 0;
|
|
mix->depthbuffer = 0;
|
|
}
|
|
if (mix->display) {
|
|
g_object_unref (mix->display);
|
|
mix->display = NULL;
|
|
}
|
|
while (walk) {
|
|
GstGLMixerPad *sink_pad = GST_GL_MIXER_PAD (walk->data);
|
|
walk = g_slist_next (walk);
|
|
if (sink_pad->display) {
|
|
gst_gl_display_activate_gl_context (sink_pad->display, TRUE);
|
|
g_object_unref (sink_pad->display);
|
|
sink_pad->display = NULL;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_gl_mixer_reset (mix);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|