gstreamer/ges/ges-track-transition.c
2010-06-09 16:34:14 +02:00

479 lines
14 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon@collabora.co.uk>
* 2010 Nokia Corporation
*
* 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.
*/
/**
* SECTION:ges-track-transition
* @short_description: Concrete, track-level implemenation of audio and video
* transitinos.
*/
#include "ges-internal.h"
#include "ges-track-object.h"
#include "ges-track-transition.h"
#include "ges-timeline-transition.h"
G_DEFINE_TYPE (GESTrackTransition, ges_track_transition, GES_TYPE_TRACK_OBJECT);
static void
ges_track_transition_update_vcontroller (GESTrackTransition * self,
GstElement * gnlobj)
{
GValue start_value = { 0, };
GValue end_value = { 0, };
guint64 duration;
GST_LOG ("updating controller");
if (!gnlobj)
return;
if (!(self->vcontroller))
return;
GST_LOG ("getting properties");
g_object_get (G_OBJECT (gnlobj), "duration", (guint64 *) & duration, NULL);
GST_INFO ("duration: %d\n", duration);
g_value_init (&start_value, G_TYPE_DOUBLE);
g_value_init (&end_value, G_TYPE_DOUBLE);
g_value_set_double (&start_value, self->vstart_value);
g_value_set_double (&end_value, self->vend_value);
GST_LOG ("setting values on controller");
g_assert (GST_IS_CONTROLLER (self->vcontroller));
g_assert (GST_IS_CONTROL_SOURCE (self->vcontrol_source));
gst_interpolation_control_source_unset_all (self->vcontrol_source);
gst_interpolation_control_source_set (self->vcontrol_source, 0, &start_value);
gst_interpolation_control_source_set (self->vcontrol_source,
duration, &end_value);
GST_LOG ("done updating controller");
}
static void
ges_track_transition_update_acontroller (GESTrackTransition * self,
GstElement * gnlobj)
{
guint64 duration;
GValue zero = { 0, };
GValue one = { 0, };
GST_LOG ("updating controller: gnlobj (%p) acontroller(%p) bcontroller(%p)",
gnlobj, self->a_acontroller, self->a_bcontroller);
if (!gnlobj)
return;
if (!(self->a_acontroller) || !(self->a_bcontroller))
return;
GST_LOG ("getting properties");
g_object_get (G_OBJECT (gnlobj), "duration", (guint64 *) & duration, NULL);
GST_INFO ("duration: %lud\n", duration);
g_value_init (&zero, G_TYPE_DOUBLE);
g_value_init (&one, G_TYPE_DOUBLE);
g_value_set_double (&zero, 0.0);
g_value_set_double (&one, 1.0);
GST_LOG ("setting values on controller");
g_assert (GST_IS_CONTROLLER (self->a_acontroller));
g_assert (GST_IS_CONTROL_SOURCE (self->a_acontrol_source));
g_assert (GST_IS_CONTROLLER (self->a_bcontroller));
g_assert (GST_IS_CONTROL_SOURCE (self->a_bcontrol_source));
gst_interpolation_control_source_unset_all (self->a_acontrol_source);
gst_interpolation_control_source_set (self->a_acontrol_source, 0, &one);
gst_interpolation_control_source_set (self->a_acontrol_source,
duration, &zero);
gst_interpolation_control_source_unset_all (self->a_bcontrol_source);
gst_interpolation_control_source_set (self->a_bcontrol_source, 0, &zero);
gst_interpolation_control_source_set (self->a_bcontrol_source,
duration, &one);
GST_LOG ("done updating controller");
}
static void
gnlobject_duration_cb (GstElement * gnlobject, GParamSpec * arg
G_GNUC_UNUSED, GESTrackTransition * self)
{
GESTrackType type = ((GESTrackObject *) self)->track->type;
GST_LOG ("got duration changed signal");
if (type == GES_TRACK_TYPE_VIDEO)
ges_track_transition_update_vcontroller (self, gnlobject);
else if (type == GES_TRACK_TYPE_AUDIO) {
GST_LOG ("transition is an audio transition");
ges_track_transition_update_acontroller (self, gnlobject);
}
}
static void
ges_track_transition_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_transition_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
switch (property_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_track_transition_dispose (GObject * object)
{
GESTrackTransition *self = GES_TRACK_TRANSITION (object);
GST_DEBUG ("disposing");
if (self->vcontroller) {
g_object_unref (self->vcontroller);
self->vcontroller = NULL;
if (self->vcontrol_source)
gst_object_unref (self->vcontrol_source);
self->vcontrol_source = NULL;
}
if (self->a_acontroller) {
g_object_unref (self->a_acontroller);
self->a_acontroller = NULL;
if (self->a_acontrol_source)
gst_object_unref (self->a_acontrol_source);
self->a_acontrol_source = NULL;
}
if (self->a_bcontroller) {
g_object_unref (self->a_bcontroller);
self->a_bcontroller = NULL;
if (self->a_bcontrol_source)
gst_object_unref (self->a_bcontrol_source);
self->a_bcontrol_source = NULL;
}
if (self->vsmpte) {
g_object_unref (self->vsmpte);
self->vsmpte = NULL;
}
G_OBJECT_CLASS (ges_track_transition_parent_class)->dispose (object);
}
static void
ges_track_transition_finalize (GObject * object)
{
G_OBJECT_CLASS (ges_track_transition_parent_class)->finalize (object);
}
static GObject *
link_element_to_mixer (GstElement * element, GstElement * mixer)
{
GstPad *sinkpad = gst_element_get_request_pad (mixer, "sink_%d");
GstPad *srcpad = gst_element_get_static_pad (element, "src");
g_assert (sinkpad);
g_assert (srcpad);
gst_pad_link (srcpad, sinkpad);
return G_OBJECT (sinkpad);
}
static GObject *
link_element_to_mixer_with_smpte (GstBin * bin, GstElement * element,
GstElement * mixer, gint type, GstElement ** smpteref)
{
GstElement *smptealpha = gst_element_factory_make ("smptealpha", NULL);
g_object_set (G_OBJECT (smptealpha),
"type", (gint) type, "invert", (gboolean) TRUE, NULL);
gst_bin_add (bin, smptealpha);
gst_element_link_many (element, smptealpha, mixer, NULL);
/* crack */
if (smpteref) {
*smpteref = smptealpha;
}
return G_OBJECT (smptealpha);
}
static GObject *
link_element_to_mixer_with_volume (GstBin * bin, GstElement * element,
GstElement * mixer)
{
GstElement *volume = gst_element_factory_make ("volume", NULL);
gst_bin_add (bin, volume);
gst_element_link_many (element, volume, mixer, NULL);
return G_OBJECT (volume);
}
static GstElement *
create_video_bin (GESTrackTransition * self)
{
GstElement *topbin, *iconva, *iconvb, *oconv;
GObject *target = NULL;
const gchar *propname = NULL;
GstElement *mixer = NULL;
GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src;
GstController *controller;
GstInterpolationControlSource *control_source;
GST_LOG ("creating a video bin");
topbin = gst_bin_new ("transition-bin");
iconva = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-a");
iconvb = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-b");
oconv = gst_element_factory_make ("ffmpegcolorspace", "tr-csp-output");
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, oconv, NULL);
mixer = gst_element_factory_make ("videomixer", NULL);
g_object_set (G_OBJECT (mixer), "background", 1, NULL);
gst_bin_add (GST_BIN (topbin), mixer);
if (self->vtype != VTYPE_CROSSFADE) {
link_element_to_mixer_with_smpte (GST_BIN (topbin), iconva, mixer,
self->vtype, NULL);
target = link_element_to_mixer_with_smpte (GST_BIN (topbin), iconvb,
mixer, self->vtype, &self->vsmpte);
g_object_ref (self->vsmpte);
propname = "position";
self->vstart_value = 1.0;
self->vend_value = 0.0;
} else {
link_element_to_mixer (iconva, mixer);
target = link_element_to_mixer (iconvb, mixer);
propname = "alpha";
self->vstart_value = 0.0;
self->vend_value = 1.0;
}
gst_element_link (mixer, oconv);
sinka_target = gst_element_get_static_pad (iconva, "sink");
sinkb_target = gst_element_get_static_pad (iconvb, "sink");
src_target = gst_element_get_static_pad (oconv, "src");
sinka = gst_ghost_pad_new ("sinka", sinka_target);
sinkb = gst_ghost_pad_new ("sinkb", sinkb_target);
src = gst_ghost_pad_new ("src", src_target);
gst_element_add_pad (topbin, src);
gst_element_add_pad (topbin, sinka);
gst_element_add_pad (topbin, sinkb);
/* set up interpolation */
g_object_set (target, propname, (gfloat) 0.0, NULL);
controller = gst_object_control_properties (target, propname, NULL);
control_source = gst_interpolation_control_source_new ();
gst_controller_set_control_source (controller,
propname, GST_CONTROL_SOURCE (control_source));
gst_interpolation_control_source_set_interpolation_mode (control_source,
GST_INTERPOLATE_LINEAR);
self->vcontroller = controller;
self->vcontrol_source = control_source;
GST_LOG ("controller created, updating");
ges_track_transition_update_vcontroller (self,
((GESTrackObject *) self)->gnlobject);
return topbin;
}
static GstElement *
create_audio_bin (GESTrackTransition * self)
{
GstElement *topbin, *iconva, *iconvb, *oconv;
GObject *atarget, *btarget = NULL;
const gchar *propname = "volume";
GstElement *mixer = NULL;
GstPad *sinka_target, *sinkb_target, *src_target, *sinka, *sinkb, *src;
GstController *acontroller, *bcontroller;
GstInterpolationControlSource *acontrol_source, *bcontrol_source;
GST_LOG ("creating an audio bin");
topbin = gst_bin_new ("transition-bin");
iconva = gst_element_factory_make ("audioconvert", "tr-aconv-a");
iconvb = gst_element_factory_make ("audioconvert", "tr-aconv-b");
oconv = gst_element_factory_make ("audioconvert", "tr-aconv-output");
gst_bin_add_many (GST_BIN (topbin), iconva, iconvb, oconv, NULL);
mixer = gst_element_factory_make ("adder", NULL);
gst_bin_add (GST_BIN (topbin), mixer);
atarget = link_element_to_mixer_with_volume (GST_BIN (topbin), iconva, mixer);
btarget = link_element_to_mixer_with_volume (GST_BIN (topbin), iconvb, mixer);
g_assert (atarget && btarget);
gst_element_link (mixer, oconv);
sinka_target = gst_element_get_static_pad (iconva, "sink");
sinkb_target = gst_element_get_static_pad (iconvb, "sink");
src_target = gst_element_get_static_pad (oconv, "src");
sinka = gst_ghost_pad_new ("sinka", sinka_target);
sinkb = gst_ghost_pad_new ("sinkb", sinkb_target);
src = gst_ghost_pad_new ("src", src_target);
gst_element_add_pad (topbin, src);
gst_element_add_pad (topbin, sinka);
gst_element_add_pad (topbin, sinkb);
/* set up interpolation */
//g_object_set(atarget, propname, (gdouble) 0, NULL);
//g_object_set(btarget, propname, (gdouble) 0, NULL);
acontroller = gst_object_control_properties (atarget, propname, NULL);
bcontroller = gst_object_control_properties (btarget, propname, NULL);
g_assert (acontroller && bcontroller);
acontrol_source = gst_interpolation_control_source_new ();
gst_controller_set_control_source (acontroller,
propname, GST_CONTROL_SOURCE (acontrol_source));
gst_interpolation_control_source_set_interpolation_mode (acontrol_source,
GST_INTERPOLATE_LINEAR);
bcontrol_source = gst_interpolation_control_source_new ();
gst_controller_set_control_source (bcontroller,
propname, GST_CONTROL_SOURCE (bcontrol_source));
gst_interpolation_control_source_set_interpolation_mode (bcontrol_source,
GST_INTERPOLATE_LINEAR);
self->a_acontroller = acontroller;
self->a_bcontroller = bcontroller;
self->a_acontrol_source = acontrol_source;
self->a_bcontrol_source = bcontrol_source;
GST_LOG ("controllers created, updating");
ges_track_transition_update_acontroller (self,
((GESTrackObject *) self)->gnlobject);
return topbin;
}
static gboolean
ges_track_transition_create_gnl_object (GESTrackObject * object)
{
GESTrackTransition *self = GES_TRACK_TRANSITION (object);
static gint tnum = 0;
gchar *name = g_strdup_printf ("transition-operation%d", tnum++);
object->gnlobject = gst_element_factory_make ("gnloperation", name);
g_free (name);
g_object_set (object->gnlobject, "priority", 0, NULL);
g_signal_connect (G_OBJECT (object->gnlobject), "notify::duration",
G_CALLBACK (gnlobject_duration_cb), object);
if ((object->track->type) == GES_TRACK_TYPE_VIDEO) {
gst_bin_add (GST_BIN (object->gnlobject), create_video_bin (self));
return TRUE;
}
else if ((object->track->type) == GES_TRACK_TYPE_AUDIO) {
gst_bin_add (GST_BIN (object->gnlobject), create_audio_bin (self));
return TRUE;
}
return FALSE;
}
static void
ges_track_transition_class_init (GESTrackTransitionClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTrackObjectClass *track_class = GES_TRACK_OBJECT_CLASS (klass);
object_class->get_property = ges_track_transition_get_property;
object_class->set_property = ges_track_transition_set_property;
object_class->dispose = ges_track_transition_dispose;
object_class->finalize = ges_track_transition_finalize;
track_class->create_gnl_object = ges_track_transition_create_gnl_object;
}
static void
ges_track_transition_init (GESTrackTransition * self)
{
self->vcontroller = NULL;
self->vcontrol_source = NULL;
self->vsmpte = NULL;
self->vtype = 0;
self->vstart_value = 0.0;
self->vend_value = 0.0;
self->a_acontroller = NULL;
self->a_acontrol_source = NULL;
self->a_bcontroller = NULL;
self->a_bcontrol_source = NULL;
}
void
ges_track_transition_set_vtype (GESTrackTransition * self, gint vtype)
{
if (((vtype == VTYPE_CROSSFADE) && (self->vtype != VTYPE_CROSSFADE)) ||
((vtype != VTYPE_CROSSFADE) && (self->vtype = VTYPE_CROSSFADE))) {
GST_WARNING
("Changing between 'crossfade' and other types is not supported\n");
}
self->vtype = vtype;
if (self->vsmpte && (vtype != VTYPE_CROSSFADE))
g_object_set (self->vsmpte, "type", (gint) vtype, NULL);
}
GESTrackTransition *
ges_track_transition_new (gint value)
{
GESTrackTransition *ret = g_object_new (GES_TYPE_TRACK_TRANSITION, NULL);
ret->vtype = value;
return ret;
}