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/*
* Clutter-GStreamer.
*
* GStreamer integration library for Clutter.
*
* video-sink.c - A small example around the videotestsrc ! capsfilter !
* navigationtest ! videoconvert ! cluttersink pipeline.
*
* Copyright (C) 2007,2008 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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.
*/
#include <stdlib.h>
#include <clutter-gst/clutter-gst.h>
void
size_change (ClutterTexture *texture,
gint width,
gint height,
gpointer user_data)
{
ClutterActor *stage;
gfloat new_x, new_y, new_width, new_height;
gfloat stage_width, stage_height;
stage = clutter_actor_get_stage (CLUTTER_ACTOR (texture));
if (stage == NULL)
return;
clutter_actor_get_size (stage, &stage_width, &stage_height);
new_height = (height * stage_width) / width;
if (new_height <= stage_height)
{
new_width = stage_width;
new_x = 0;
new_y = (stage_height - new_height) / 2;
}
else
{
new_width = (width * stage_height) / height;
new_height = stage_height;
new_x = (stage_width - new_width) / 2;
new_y = 0;
}
clutter_actor_set_position (CLUTTER_ACTOR (texture), new_x, new_y);
clutter_actor_set_size (CLUTTER_ACTOR (texture), new_width, new_height);
}
int
main (int argc, char *argv[])
{
ClutterTimeline *timeline;
ClutterActor *stage;
ClutterActor *texture;
ClutterConstraint *constraint;
GstPipeline *pipeline;
GstElement *src;
GstElement *filter;
GstElement *test;
GstElement *colorspace;
GstElement *sink;
if (argc < 1)
{
g_error ("Usage: %s", argv[0]);
return EXIT_FAILURE;
}
if (clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS)
{
g_error ("Failed to initialize clutter\n");
return EXIT_FAILURE;
}
gst_init (&argc, &argv);
stage = clutter_stage_new ();
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
/* Make a timeline */
timeline = clutter_timeline_new (1000);
g_object_set(timeline, "loop", TRUE, NULL);
/* We need to set certain props on the target texture currently for
* efficient/corrent playback onto the texture (which sucks a bit)
*/
texture = g_object_new (CLUTTER_TYPE_TEXTURE,
"disable-slicing", TRUE,
NULL);
g_signal_connect (CLUTTER_TEXTURE (texture),
"size-change",
G_CALLBACK (size_change), NULL);
/* Set up pipeline */
pipeline = GST_PIPELINE(gst_pipeline_new (NULL));
src = gst_parse_launch ("videotestsrc", NULL);
filter = gst_parse_launch ("capsfilter caps=video/x-raw,pixel-aspect-ratio=1/4", NULL);
test = gst_element_factory_make ("navigationtest", NULL);
colorspace = gst_element_factory_make ("videoconvert", NULL);
sink = gst_element_factory_make ("cluttersink", NULL);
g_object_set (sink, "texture", CLUTTER_TEXTURE (texture), NULL);
// g_object_set (src , "pattern", 10, NULL);
gst_bin_add_many (GST_BIN (pipeline), src, filter, test, colorspace, sink, NULL);
gst_element_link_many (src, filter, test, colorspace, sink, NULL);
gst_element_set_state (GST_ELEMENT(pipeline), GST_STATE_PLAYING);
/* Resize with the window */
constraint = clutter_bind_constraint_new (stage, CLUTTER_BIND_SIZE, 0.0);
clutter_actor_add_constraint_with_name (texture, "size", constraint);
/* Rotate a bit */
clutter_actor_set_pivot_point (texture, 0.5, 0.5);
clutter_actor_set_rotation_angle (texture, CLUTTER_Z_AXIS, 45.0);
/* start the timeline */
clutter_timeline_start (timeline);
clutter_actor_add_child (stage, texture);
// clutter_actor_set_opacity (texture, 0x11);
clutter_actor_show (stage);
clutter_main();
return EXIT_SUCCESS;
}
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