Header file | LV2UI_Descriptor

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lv2-gtk2gui.h

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/************************************************************************
 *
 * GTK2 in-process UI extension for LV2
 *
 * Copyright (C) 2006 Lars Luthman <lars.luthman@gmail.com>
 * 
 * Based on lv2.h, which is 
 *
 * Copyright (C) 2000-2002 Richard W.E. Furse, Paul Barton-Davis, Stefan
 * Westerfeld
 * Copyright (C) 2006 Steve Harris, Dave Robillard.
 *
 * This header 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 2.1 of the License,
 * or (at your option) any later version.
 *
 * This header 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
 * USA.
 *
 ***********************************************************************/

#ifndef LV2_GTK2GUI_H
#define LV2_GTK2GUI_H

#include <lv2.h>
#include <gtk/gtkwidget.h>


#ifdef __cplusplus
extern "C" {
#endif


typedef void* LV2UI_Handle;


typedef void* LV2UI_Controller;


typedef void (*LV2UI_Set_Control_Function)(LV2UI_Controller controller,
                                           uint32_t port,
                                           float value);


typedef struct _LV2UI_Descriptor {
  
  const char* URI;
  
  LV2UI_Handle (*instantiate)(const struct _LV2UI_Descriptor* descriptor,
                              const char*                     plugin_uri,
                              const char*                     bundle_path,
                              LV2UI_Set_Control_Function      control_function,
                              LV2UI_Controller                controller,
                              GtkWidget**                     widget,
                              const LV2_Host_Feature**        features);

  
  void (*cleanup)(LV2UI_Handle  gui);
  
  void (*set_control)(LV2UI_Handle   gui,
                      uint32_t       port,
                      float          value);
  
  void* (*extension_data)(LV2UI_Handle    gui,
                          const char*     uri);

} LV2UI_Descriptor;



const LV2UI_Descriptor* lv2ui_descriptor(uint32_t index);


typedef const LV2UI_Descriptor* (*LV2UI_DescriptorFunction)(uint32_t index);



#ifdef __cplusplus
}
#endif


#endif

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