/*
device_change_cb:
callback called when the user selected a video capture device
*/
static
void device_change_cb( UnicapgtkDeviceSelection *selection, gchar *device_id, GtkWidget *ugtk_display )
{
unicap_device_t device;
unicap_handle_t handle;
GtkWidget *property_dialog;
GtkWidget *format_selection;
GtkWidget *_window;
property_dialog = g_object_get_data( G_OBJECT( ugtk_display ), "property_dialog" );
g_assert( property_dialog );
format_selection = g_object_get_data( G_OBJECT( ugtk_display ), "format_selection" );
g_assert( format_selection );
_window = g_object_get_data( G_OBJECT( ugtk_display ), "app-window" );
g_assert( _window );
unicap_void_device( &device );
strcpy( device.identifier, device_id );
if( !SUCCESS( unicap_enumerate_devices( &device, &device, 0 ) ) ||
!SUCCESS( unicap_open( &handle, &device ) ) )
{
// device is not available anymore
g_printerr( "*** TODO: device rescan*** device not available!\n" );
return;
}
if( unicap_is_stream_locked( &device ) )
{
// could not acquire lock
unicap_close( handle );
g_printerr( "*** TODO: device rescan*** device is locked\n" );
return;
}
unicapgtk_video_display_set_handle( UNICAPGTK_VIDEO_DISPLAY( ugtk_display ), handle );
unicapgtk_property_dialog_set_handle( UNICAPGTK_PROPERTY_DIALOG( property_dialog ), handle );
unicapgtk_video_format_selection_set_handle( UNICAPGTK_VIDEO_FORMAT_SELECTION( format_selection ), handle );
unicap_close( handle );
gtk_window_set_title( GTK_WINDOW( _window ), device.identifier );
}
/**
* unicapgtk_device_selection_rescan:
* @combo: an #UnicapgtkDeviceSelection
*
* Tiggers rescan of available video capture devices and updates the
* combo box.
*
* Returns: number of available devices
*/
gint
unicapgtk_device_selection_rescan( UnicapgtkDeviceSelection *combo )
{
unicap_device_t device;
GtkListStore *store;
GtkTreeIter iter;
gint i;
g_return_val_if_fail( UNICAPGTK_IS_DEVICE_SELECTION( combo ), 0 );
store = GTK_LIST_STORE( gtk_combo_box_get_model( GTK_COMBO_BOX( combo ) ) );
g_return_val_if_fail( GTK_IS_LIST_STORE( store ), 0 );
if( GTK_WIDGET_REALIZED( combo ) )
{
gdk_window_set_cursor( GTK_WIDGET( combo )->window, combo->busy_cursor );
gdk_display_sync( gtk_widget_get_display( GTK_WIDGET( combo ) ) );
}
gtk_list_store_clear( store );
gtk_combo_box_set_active( GTK_COMBO_BOX( combo ), -1 );
unicap_reenumerate_devices( NULL );
for( i = 0; SUCCESS( unicap_enumerate_devices( NULL, &device, i ) ); i++ )
{
gchar *label;
gboolean available = !unicap_is_stream_locked( &device );
label = format_device_label( combo->label_fmt_string, &device );
gtk_list_store_append( store, &iter);
gtk_list_store_set( store, &iter,
UNICAPGTK_DEVICE_ID, device.identifier,
UNICAPGTK_DEVICE_MODEL, device.model_name,
UNICAPGTK_DEVICE_VENDOR, device.vendor_name,
LABEL, label,
SENSITIVE, available,
-1);
g_free( label );
}
if( i == 0 )
{
device_combo_box_add_none_entry( store );
}
if( combo->include_rescan_entry )
{
device_combo_box_add_rescan_entry( store );
}
if( combo->active_device )
{
unicapgtk_device_selection_set_by_id( combo, combo->active_device );
}
if( GTK_WIDGET_REALIZED( combo ) )
{
gdk_window_set_cursor( GTK_WIDGET( combo )->window, NULL );
}
return i;
}