clutter-app.c

   1 /*
   2  * Based on an example from the clutter-gst package:
   3  *
   4  * video-sink.c - A small example around the videotestsrc ! warptv !
   5  *                ffmpegcolorspace ! cluttersink pipeline.
   6  *
   7  * Copyright (C) 2007,2008 OpenedHand
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the
  21  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  22  * Boston, MA 02111-1307, USA.
  23  */
  24
  25 #include <clutter-gst/clutter-gst.h>
  26 #include "app.h"
  27
  28 void
  29 size_change (ClutterTexture *texture,
  30              gfloat          width,
  31              gfloat          height,
  32              gpointer        user_data)
  33 {
  34   ClutterActor *stage;
  35   gfloat new_x, new_y, new_width, new_height;
  36   gfloat stage_width, stage_height;
  37
  38   stage = clutter_actor_get_stage (CLUTTER_ACTOR (texture));
  39   if (stage == NULL)
  40     return;
  41
  42   clutter_actor_get_size (stage, &stage_width, &stage_height);
  43
  44   new_height = (height * stage_width) / width;
  45   if (new_height <= stage_height)
  46     {
  47       new_width = stage_width;
  48
  49       new_x = 0;
  50       new_y = (stage_height - new_height) / 2;
  51     }
  52   else
  53     {
  54       new_width  = (width * stage_height) / height;
  55       new_height = stage_height;
  56
  57       new_x = (stage_width - new_width) / 2;
  58       new_y = 0;
  59     }
  60
  61   clutter_actor_set_position (CLUTTER_ACTOR (texture), new_x, new_y);
  62   clutter_actor_set_size (CLUTTER_ACTOR (texture), new_width, new_height);
  63 }
  64
  65 void
  66 set_initial_size (ClutterTexture *texture)
  67 {
  68   ClutterActor *stage;
  69   gfloat new_x, new_y;
  70   gfloat stage_width, stage_height;
  71   stage = clutter_actor_get_stage (CLUTTER_ACTOR (texture));
  72   clutter_actor_get_size (stage, &stage_width, &stage_height);
  73   new_x = (stage_width - WIDTH) / 2;
  74   new_y = (stage_height - HEIGHT) / 2;
  75   clutter_actor_set_position (CLUTTER_ACTOR(texture), new_x, new_y);
  76   clutter_actor_set_size (CLUTTER_ACTOR(texture), WIDTH, HEIGHT);
  77 }
  78
  79
  80 int
  81 main (int argc, char *argv[])
  82 {
  83   ClutterTimeline  *timeline;
  84   ClutterActor     *stage;
  85   ClutterActor     *texture;
  86   ClutterColor     black = {0, 0, 0, 255};
  87
  88   clutter_init (&argc, &argv);
  89   gst_init (&argc, &argv);
  90
  91   stage = clutter_stage_get_default();
  92   clutter_stage_set_color(CLUTTER_STAGE(stage), &black);
  93   clutter_stage_set_fullscreen(CLUTTER_STAGE(stage), TRUE);
  94   clutter_stage_hide_cursor(CLUTTER_STAGE(stage));
  95
  96   /* Make a timeline */
  97   timeline = clutter_timeline_new (1000);
  98   g_object_set(timeline, "loop", TRUE, NULL);
  99
 100   /* We need to set certain props on the target texture currently for
 101    * efficient/corrent playback onto the texture (which sucks a bit)
 102   */
 103   texture = g_object_new (CLUTTER_TYPE_TEXTURE,
 104                           "sync-size",       FALSE,
 105                           "disable-slicing", TRUE,
 106                           NULL);
 107
 108   /*
 109   g_signal_connect (CLUTTER_TEXTURE (texture),
 110                     "size-change",
 111                     G_CALLBACK (size_change), NULL);
 112   */
 113
 114
 115   GstElement *sink = clutter_gst_video_sink_new(CLUTTER_TEXTURE(texture));
 116
 117   GstPipeline *pipeline = make_pipeline(sink);
 118
 119   gst_element_set_state (GST_ELEMENT(pipeline), GST_STATE_PLAYING);
 120
 121   /* start the timeline */
 122   clutter_timeline_start (timeline);
 123
 124   clutter_group_add (CLUTTER_GROUP (stage), texture);
 125   // clutter_actor_set_opacity (texture, 0x11);
 126   clutter_actor_show_all (stage);
 127
 128   set_initial_size(CLUTTER_TEXTURE(texture));
 129   clutter_main();
 130
 131   return 0;
 132 }