[empathy] CameraMonitor: add API to get all cameras

[Emilio Pozuelo Monfort <epm src gnome org>]

commit ab58c837e285f16b639444865c47c0bc286ed4e7
Author: Emilio Pozuelo Monfort <emilio pozuelo collabora co uk>
Date:   Mon Aug 1 11:58:03 2011 +0100

    CameraMonitor: add API to get all cameras

 libempathy/empathy-camera-monitor.c |   71 +++++++++++++++++++++++++++++++++++
 libempathy/empathy-camera-monitor.h |    9 ++++
 2 files changed, 80 insertions(+), 0 deletions(-)
---
diff --git a/libempathy/empathy-camera-monitor.c b/libempathy/empathy-camera-monitor.c
index 3d80d40..98d0218 100644
--- a/libempathy/empathy-camera-monitor.c
+++ b/libempathy/empathy-camera-monitor.c
@@ -34,6 +34,7 @@
 struct _EmpathyCameraMonitorPrivate
 {
   CheeseCameraDeviceMonitor *cheese_monitor;
+  GQueue cameras;
   gint num_cameras;
 };
 
@@ -47,6 +48,47 @@ G_DEFINE_TYPE (EmpathyCameraMonitor, empathy_camera_monitor, G_TYPE_OBJECT);
 
 static EmpathyCameraMonitor *manager_singleton = NULL;
 
+static EmpathyCamera *
+empathy_camera_new (const gchar *id,
+    const gchar *device,
+    const gchar *name)
+{
+  EmpathyCamera *camera = g_slice_new (EmpathyCamera);
+
+  camera->id = g_strdup (id);
+  camera->device = g_strdup (device);
+  camera->name = g_strdup (name);
+
+  return camera;
+}
+
+static void
+empathy_camera_free (EmpathyCamera *camera)
+{
+  g_free (camera->id);
+  g_free (camera->device);
+  g_free (camera->name);
+
+  g_slice_free (EmpathyCamera, camera);
+}
+
+static gint
+empathy_camera_find (gconstpointer a,
+    gconstpointer b)
+{
+  const EmpathyCamera *camera = a;
+  const gchar *id = b;
+
+  return g_strcmp0 (camera->id, id);
+}
+
+static void
+empathy_camera_monitor_free_camera_foreach (gpointer data,
+    gpointer user_data)
+{
+  empathy_camera_free (data);
+}
+
 static void
 on_camera_added (CheeseCameraDeviceMonitor *device,
     gchar *id,
@@ -55,6 +97,10 @@ on_camera_added (CheeseCameraDeviceMonitor *device,
     gint api_version,
     EmpathyCameraMonitor *self)
 {
+  EmpathyCamera *camera = empathy_camera_new (id, filename, product_name);
+
+  g_queue_push_tail (&self->priv->cameras, camera);
+
   self->priv->num_cameras++;
 
   if (self->priv->num_cameras == 1)
@@ -66,10 +112,29 @@ on_camera_removed (CheeseCameraDeviceMonitor *device,
     gchar *id,
     EmpathyCameraMonitor *self)
 {
+  EmpathyCamera *camera;
+  GList *l;
+
+  l = g_queue_find_custom (&self->priv->cameras, id, empathy_camera_find);
+
+  g_return_if_fail (l != NULL);
+
+  camera = l->data;
+
+  g_queue_delete_link (&self->priv->cameras, l);
+
   self->priv->num_cameras--;
 
   if (self->priv->num_cameras == 0)
     g_object_notify (G_OBJECT (self), "available");
+
+  empathy_camera_free (camera);
+}
+
+const GList *
+empathy_camera_monitor_get_cameras (EmpathyCameraMonitor *self)
+{
+  return self->priv->cameras.head;
 }
 
 static void
@@ -98,6 +163,10 @@ empathy_camera_monitor_dispose (GObject *object)
 
   tp_clear_object (&self->priv->cheese_monitor);
 
+  g_queue_foreach (&self->priv->cameras,
+      empathy_camera_monitor_free_camera_foreach, NULL);
+  g_queue_clear (&self->priv->cameras);
+
   G_OBJECT_CLASS (empathy_camera_monitor_parent_class)->dispose (object);
 }
 
@@ -159,6 +228,8 @@ empathy_camera_monitor_init (EmpathyCameraMonitor *self)
   self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
       EMPATHY_TYPE_CAMERA_MONITOR, EmpathyCameraMonitorPrivate);
 
+  g_queue_init (&self->priv->cameras);
+
   self->priv->cheese_monitor = cheese_camera_device_monitor_new ();
 
   g_signal_connect (self->priv->cheese_monitor, "added",
diff --git a/libempathy/empathy-camera-monitor.h b/libempathy/empathy-camera-monitor.h
index d2d9bb8..19fbafa 100644
--- a/libempathy/empathy-camera-monitor.h
+++ b/libempathy/empathy-camera-monitor.h
@@ -46,11 +46,20 @@ struct _EmpathyCameraMonitorClass
   GObjectClass parent_class;
 };
 
+typedef struct
+{
+  gchar *id;
+  gchar *device;
+  gchar *name;
+} EmpathyCamera;
+
 GType empathy_camera_monitor_get_type (void) G_GNUC_CONST;
 
 EmpathyCameraMonitor *empathy_camera_monitor_dup_singleton (void);
 
 gboolean empathy_camera_monitor_get_available (EmpathyCameraMonitor *self);
 
+const GList * empathy_camera_monitor_get_cameras (EmpathyCameraMonitor *self);
+
 G_END_DECLS
 #endif /* __EMPATHY_CAMERA_MONITOR_H__ */