swfdec/swfdec_video_provider.c

   1 /* Swfdec
   2  * Copyright (C) 2008 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "swfdec_video_provider.h"
  25 #include "swfdec_debug.h"
  26 #include "swfdec_loader_internal.h"
  27 #include "swfdec_player_internal.h"
  28
  29 enum {
  30   NEW_IMAGE,
  31   LAST_SIGNAL
  32 };
  33
  34 static guint signals[LAST_SIGNAL] = { 0, };
  35
  36 static void
  37 swfdec_video_provider_base_init (gpointer klass)
  38 {
  39   static gboolean initialized = FALSE;
  40
  41   if (G_UNLIKELY (!initialized)) {
  42     initialized = TRUE;
  43
  44     signals[NEW_IMAGE] = g_signal_new ("new-image", G_TYPE_FROM_CLASS (klass),
  45         G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_VOID__VOID,
  46         G_TYPE_NONE, 0);
  47   }
  48 }
  49
  50 GType
  51 swfdec_video_provider_get_type (void)
  52 {
  53   static GType video_provider_type = 0;
  54
  55   if (!video_provider_type) {
  56     static const GTypeInfo video_provider_info = {
  57       sizeof (SwfdecVideoProviderInterface),
  58       swfdec_video_provider_base_init,
  59       NULL,
  60       NULL,
  61       NULL,
  62       NULL,
  63       0,
  64       0,
  65       NULL,
  66     };
  67
  68     video_provider_type = g_type_register_static (G_TYPE_INTERFACE,
  69         "SwfdecVideoProvider", &video_provider_info, 0);
  70     g_type_interface_add_prerequisite (video_provider_type, G_TYPE_OBJECT);
  71   }
  72
  73   return video_provider_type;
  74 }
  75
  76 cairo_surface_t *
  77 swfdec_video_provider_get_image (SwfdecVideoProvider *provider,
  78     SwfdecRenderer *renderer, guint *width, guint *height)
  79 {
  80   SwfdecVideoProviderInterface *iface;
  81
  82   g_return_val_if_fail (SWFDEC_IS_VIDEO_PROVIDER (provider), NULL);
  83   g_return_val_if_fail (SWFDEC_IS_RENDERER (renderer), NULL);
  84   g_return_val_if_fail (width != NULL, NULL);
  85   g_return_val_if_fail (height != NULL, NULL);
  86
  87   iface = SWFDEC_VIDEO_PROVIDER_GET_INTERFACE (provider);
  88   g_assert (iface->get_image != NULL);
  89   return iface->get_image (provider, renderer, width, height);
  90 }
  91
  92 guint
  93 swfdec_video_provider_get_width (SwfdecVideoProvider *provider)
  94 {
  95   SwfdecVideoProviderInterface *iface;
  96   guint w, h;
  97
  98   g_return_val_if_fail (SWFDEC_IS_VIDEO_PROVIDER (provider), 0);
  99
 100   iface = SWFDEC_VIDEO_PROVIDER_GET_INTERFACE (provider);
 101   g_assert (iface->get_size != NULL);
 102   iface->get_size (provider, &w, &h);
 103   return w;
 104 }
 105
 106 guint
 107 swfdec_video_provider_get_height (SwfdecVideoProvider *provider)
 108 {
 109   SwfdecVideoProviderInterface *iface;
 110   guint w, h;
 111
 112   g_return_val_if_fail (SWFDEC_IS_VIDEO_PROVIDER (provider), 0);
 113
 114   iface = SWFDEC_VIDEO_PROVIDER_GET_INTERFACE (provider);
 115   g_assert (iface->get_size != NULL);
 116   iface->get_size (provider, &w, &h);
 117   return h;
 118 }
 119
 120 void
 121 swfdec_video_provider_set_ratio (SwfdecVideoProvider *provider, guint ratio)
 122 {
 123   SwfdecVideoProviderInterface *iface;
 124
 125   g_return_if_fail (SWFDEC_IS_VIDEO_PROVIDER (provider));
 126
 127   iface = SWFDEC_VIDEO_PROVIDER_GET_INTERFACE (provider);
 128   if (iface->set_ratio != NULL)
 129     iface->set_ratio (provider, ratio);
 130 }
 131
 132 void
 133 swfdec_video_provider_new_image (SwfdecVideoProvider *provider)
 134 {
 135   g_return_if_fail (SWFDEC_IS_VIDEO_PROVIDER (provider));
 136   g_signal_emit (provider, signals[NEW_IMAGE], 0);
 137 }
 138