gstreamer/ges/ges-timeline-transition.c
2010-07-09 13:21:11 +02:00

517 lines
15 KiB
C

/* GStreamer Editing Services
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
* 2009 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-timeline-transition
* @short_description: Base Class for transitions in a #GESTimelineLayer
*/
#include "ges-internal.h"
#include "ges-timeline-transition.h"
#include "ges-track-video-transition.h"
#include "ges-track-audio-transition.h"
#define GES_TYPE_TIMELINE_TRANSITION_VTYPE_TYPE \
(ges_type_timeline_transition_vtype_get_type())
static GType ges_type_timeline_transition_vtype_get_type (void);
enum
{
PROP_VTYPE = 5,
};
G_DEFINE_TYPE (GESTimelineTransition, ges_timeline_transition,
GES_TYPE_TIMELINE_OBJECT);
static GESTrackObject *ges_tl_transition_create_track_object (GESTimelineObject
*, GESTrack *);
void
ges_timeline_transition_update_vtype_internal (GESTimelineObject * self,
gint value);
void
ges_timeline_transition_update_vtype_internal (GESTimelineObject * self,
gint value)
{
GList *tmp;
GESTrackTransition *tr;
GESTrackObject *to;
for (tmp = g_list_first (self->trackobjects); tmp; tmp = g_list_next (tmp)) {
tr = GES_TRACK_TRANSITION (tmp->data);
to = (GESTrackObject *) tr;
if ((to->track) && (to->track->type == GES_TRACK_TYPE_VIDEO)) {
ges_track_video_transition_set_type ((GESTrackVideoTransition *) tr,
value);
}
}
}
static void
ges_timeline_transition_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec)
{
GESTimelineTransition *self = GES_TIMELINE_TRANSITION (object);
switch (property_id) {
case PROP_VTYPE:
self->vtype = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_transition_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESTimelineObject *self = GES_TIMELINE_OBJECT (object);
GESTimelineTransition *trself = GES_TIMELINE_TRANSITION (object);
switch (property_id) {
case PROP_VTYPE:
trself->vtype = g_value_get_enum (value);
ges_timeline_transition_update_vtype_internal (self, trself->vtype);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_timeline_transition_dispose (GObject * object)
{
G_OBJECT_CLASS (ges_timeline_transition_parent_class)->dispose (object);
}
static void
ges_timeline_transition_finalize (GObject * object)
{
G_OBJECT_CLASS (ges_timeline_transition_parent_class)->finalize (object);
}
static void
ges_timeline_transition_class_init (GESTimelineTransitionClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GESTimelineObjectClass *timobj_class = GES_TIMELINE_OBJECT_CLASS (klass);
object_class->get_property = ges_timeline_transition_get_property;
object_class->set_property = ges_timeline_transition_set_property;
object_class->dispose = ges_timeline_transition_dispose;
object_class->finalize = ges_timeline_transition_finalize;
/**
* GESTimelineTransition:vtype
*
* The SMPTE wipe to use, or 0 for crossfade.
*/
g_object_class_install_property (object_class, PROP_VTYPE,
g_param_spec_enum ("vtype", "VType",
"The SMPTE video wipe to use, or 0 for crossfade",
GES_TYPE_TIMELINE_TRANSITION_VTYPE_TYPE, VTYPE_CROSSFADE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT));
timobj_class->create_track_object = ges_tl_transition_create_track_object;
timobj_class->need_fill_track = FALSE;
}
static void
ges_timeline_transition_init (GESTimelineTransition * self)
{
self->vtype = VTYPE_CROSSFADE;
}
static GESTrackObject *
ges_tl_transition_create_track_object (GESTimelineObject * obj,
GESTrack * track)
{
GESTimelineTransition *transition = (GESTimelineTransition *) obj;
GESTrackObject *res;
GST_DEBUG ("Creating a GESTrackTransition");
if (track->type == GES_TRACK_TYPE_VIDEO) {
res = GES_TRACK_OBJECT (ges_track_video_transition_new ());
ges_track_video_transition_set_type ((GESTrackVideoTransition *) res,
transition->vtype);
}
else if (track->type == GES_TRACK_TYPE_AUDIO) {
res = GES_TRACK_OBJECT (ges_track_audio_transition_new ());
}
else {
res = GES_TRACK_OBJECT (ges_track_transition_new ());
}
return res;
}
static GEnumValue transition_types[] = {
{
1,
"A bar moves from left to right",
"bar-wipe-lr"},
{
2,
"A bar moves from top to bottom",
"bar-wipe-tb"},
{
3,
"A box expands from the upper-left corner to the lower-right corner",
"box-wipe-tl"},
{
4,
"A box expands from the upper-right corner to the lower-left corner",
"box-wipe-tr"},
{
5,
"A box expands from the lower-right corner to the upper-left corner",
"box-wipe-br"},
{
6,
"A box expands from the lower-left corner to the upper-right corner",
"box-wipe-bl"},
{
7,
"A box shape expands from each of the four corners toward the center",
"four-box-wipe-ci"},
{
8,
"A box shape expands from the center of each quadrant toward the corners of each quadrant",
"four-box-wipe-co"},
{
21,
"A central, vertical line splits and expands toward the left and right edges",
"barndoor-v"},
{
22,
"A central, horizontal line splits and expands toward the top and bottom edges",
"barndoor-h"},
{
23,
"A box expands from the top edge's midpoint to the bottom corners",
"box-wipe-tc"},
{
24,
"A box expands from the right edge's midpoint to the left corners",
"box-wipe-rc"},
{
25,
"A box expands from the bottom edge's midpoint to the top corners",
"box-wipe-bc"},
{
26,
"A box expands from the left edge's midpoint to the right corners",
"box-wipe-lc"},
{
41,
"A diagonal line moves from the upper-left corner to the lower-right corner",
"diagonal-tl"},
{
42,
"A diagonal line moves from the upper right corner to the lower-left corner",
"diagonal-tr"},
{
43,
"Two wedge shapes slide in from the top and bottom edges toward the center",
"bowtie-v"},
{
44,
"Two wedge shapes slide in from the left and right edges toward the center",
"bowtie-h"},
{
45,
"A diagonal line from the lower-left to upper-right corners splits and expands toward the opposite corners",
"barndoor-dbl"},
{
46,
"A diagonal line from upper-left to lower-right corners splits and expands toward the opposite corners",
"barndoor-dtl"},
{
47,
"Four wedge shapes split from the center and retract toward the four edges",
"misc-diagonal-dbd"},
{
48,
"A diamond connecting the four edge midpoints simultaneously contracts toward the center and expands toward the edges",
"misc-diagonal-dd"},
{
61,
"A wedge shape moves from top to bottom",
"vee-d"},
{
62,
"A wedge shape moves from right to left",
"vee-l"},
{
63,
"A wedge shape moves from bottom to top",
"vee-u"},
{
64,
"A wedge shape moves from left to right",
"vee-r"},
{
65,
"A 'V' shape extending from the bottom edge's midpoint to the opposite corners contracts toward the center and expands toward the edges",
"barnvee-d"},
{
66,
"A 'V' shape extending from the left edge's midpoint to the opposite corners contracts toward the center and expands toward the edges",
"barnvee-l"},
{
67,
"A 'V' shape extending from the top edge's midpoint to the opposite corners contracts toward the center and expands toward the edges",
"barnvee-u"},
{
68,
"A 'V' shape extending from the right edge's midpoint to the opposite corners contracts toward the center and expands toward the edges",
"barnvee-r"},
{
101,
"A rectangle expands from the center.",
"iris-rect"},
{
201,
"A radial hand sweeps clockwise from the twelve o'clock position",
"clock-cw12"},
{
202,
"A radial hand sweeps clockwise from the three o'clock position",
"clock-cw3"},
{
203,
"A radial hand sweeps clockwise from the six o'clock position",
"clock-cw6"},
{
204,
"A radial hand sweeps clockwise from the nine o'clock position",
"clock-cw9"},
{
205,
"Two radial hands sweep clockwise from the twelve and six o'clock positions",
"pinwheel-tbv"},
{
206,
"Two radial hands sweep clockwise from the nine and three o'clock positions",
"pinwheel-tbh"},
{
207,
"Four radial hands sweep clockwise",
"pinwheel-fb"},
{
211,
"A fan unfolds from the top edge, the fan axis at the center",
"fan-ct"},
{
212,
"A fan unfolds from the right edge, the fan axis at the center",
"fan-cr"},
{
213,
"Two fans, their axes at the center, unfold from the top and bottom",
"doublefan-fov"},
{
214,
"Two fans, their axes at the center, unfold from the left and right",
"doublefan-foh"},
{
221,
"A radial hand sweeps clockwise from the top edge's midpoint",
"singlesweep-cwt"},
{
222,
"A radial hand sweeps clockwise from the right edge's midpoint",
"singlesweep-cwr"},
{
223,
"A radial hand sweeps clockwise from the bottom edge's midpoint",
"singlesweep-cwb"},
{
224,
"A radial hand sweeps clockwise from the left edge's midpoint",
"singlesweep-cwl"},
{
225,
"Two radial hands sweep clockwise and counter-clockwise from the top and bottom edges' midpoints",
"doublesweep-pv"},
{
226,
"Two radial hands sweep clockwise and counter-clockwise from the left and right edges' midpoints",
"doublesweep-pd"},
{
227,
"Two radial hands attached at the top and bottom edges' midpoints sweep from right to left",
"doublesweep-ov"},
{
228,
"Two radial hands attached at the left and right edges' midpoints sweep from top to bottom",
"doublesweep-oh"},
{
231,
"A fan unfolds from the bottom, the fan axis at the top edge's midpoint",
"fan-t"},
{
232,
"A fan unfolds from the left, the fan axis at the right edge's midpoint",
"fan-r"},
{
233,
"A fan unfolds from the top, the fan axis at the bottom edge's midpoint",
"fan-b"},
{
234,
"A fan unfolds from the right, the fan axis at the left edge's midpoint",
"fan-l"},
{
235,
"Two fans, their axes at the top and bottom, unfold from the center",
"doublefan-fiv"},
{
236,
"Two fans, their axes at the left and right, unfold from the center",
"doublefan-fih"},
{
241,
"A radial hand sweeps clockwise from the upper-left corner",
"singlesweep-cwtl"},
{
242,
"A radial hand sweeps counter-clockwise from the lower-left corner.",
"singlesweep-cwbl"},
{
243,
"A radial hand sweeps clockwise from the lower-right corner",
"singlesweep-cwbr"},
{
244,
"A radial hand sweeps counter-clockwise from the upper-right corner",
"singlesweep-cwtr"},
{
245,
"Two radial hands attached at the upper-left and lower-right corners sweep down and up",
"doublesweep-pdtl"},
{
246,
"Two radial hands attached at the lower-left and upper-right corners sweep down and up",
"doublesweep-pdbl"},
{
251,
"Two radial hands attached at the upper-left and upper-right corners sweep down",
"saloondoor-t"},
{
252,
"Two radial hands attached at the upper-left and lower-left corners sweep to the right",
"saloondoor-l"},
{
253,
"Two radial hands attached at the lower-left and lower-right corners sweep up",
"saloondoor-b"},
{
254,
"Two radial hands attached at the upper-right and lower-right corners sweep to the left",
"saloondoor-r"},
{
261,
"Two radial hands attached at the midpoints of the top and bottom halves sweep from right to left",
"windshield-r"},
{
262,
"Two radial hands attached at the midpoints of the left and right halves sweep from top to bottom",
"windshield-u"},
{
263,
"Two sets of radial hands attached at the midpoints of the top and bottom halves sweep from top to bottom and bottom to top",
"windshield-v"},
{
264,
"Two sets of radial hands attached at the midpoints of the left and right halves sweep from left to right and right to left",
"windshield-h"},
{
VTYPE_CROSSFADE,
"Crossfade between two clips",
"crossfade"},
{0, NULL, NULL}
};
static GType
ges_type_timeline_transition_vtype_get_type (void)
{
static GType the_type = 0;
static gsize once = 0;
if (g_once_init_enter (&once)) {
g_assert (!once);
the_type = g_enum_register_static ("GESTimelineTransitionVType",
transition_types);
g_once_init_leave (&once, 1);
}
return the_type;
}
/**
* ges_timeline_transition_new:
* @vtype: the type of transition to create
*
*/
GESTimelineTransition *
ges_timeline_transition_new (gint vtype)
{
GESTimelineTransition *ret;
ret = g_object_new (GES_TYPE_TIMELINE_TRANSITION, "vtype", (gint) vtype,
NULL);
return ret;
}
/**
* ges_timeline_transition_new_for_nick:
* @nick: a string representing the type of transition to create
*/
GESTimelineTransition *
ges_timeline_transition_new_for_nick (gchar * nick)
{
GESTimelineTransition *ret;
GEnumValue *value;
int i;
for (i = 0, value = &transition_types[i]; value->value;
value = &transition_types[i++]) {
if (!strcmp (nick, value->value_nick)) {
ret = g_object_new (GES_TYPE_TIMELINE_TRANSITION, "vtype",
(gint) value->value, NULL);
return ret;
}
value++;
}
return NULL;
}