libs/ardour/ardour/uri_map.h

   1 /*
   2     Copyright (C) 2009-2011 Paul Davis
   3     Author: David Robillard
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #ifndef __ardour_uri_map_h__
  21 #define __ardour_uri_map_h__
  22
  23 #include <map>
  24
  25 #include <boost/utility.hpp>
  26
  27 #include "lv2.h"
  28 #include "lv2/lv2plug.in/ns/ext/uri-map/uri-map.h"
  29 #include "lv2/lv2plug.in/ns/ext/urid/urid.h"
  30
  31 namespace ARDOUR {
  32
  33
  34 /** Implementation of the LV2 uri-map and urid extensions.
  35  */
  36 class URIMap : public boost::noncopyable {
  37 public:
  38         URIMap();
  39
  40         LV2_Feature* uri_map_feature()    { return &_uri_map_feature; }
  41         LV2_Feature* urid_map_feature()   { return &_urid_map_feature; }
  42         LV2_Feature* urid_unmap_feature() { return &_urid_unmap_feature; }
  43
  44         uint32_t uri_to_id(const char* map,
  45                            const char* uri);
  46
  47         const char* id_to_uri(const char* map,
  48                               uint32_t    id);
  49
  50 private:
  51         static uint32_t uri_map_uri_to_id(LV2_URI_Map_Callback_Data callback_data,
  52                                           const char*               map,
  53                                           const char*               uri);
  54
  55         static LV2_URID urid_map(LV2_URID_Map_Handle handle,
  56                                  const char*         uri);
  57
  58         static const char* urid_unmap(LV2_URID_Unmap_Handle handle,
  59                                       LV2_URID              urid);
  60
  61         typedef std::map<uint16_t, uint32_t> EventToGlobal;
  62         typedef std::map<uint32_t, uint16_t> GlobalToEvent;
  63
  64         EventToGlobal _event_to_global;
  65         GlobalToEvent _global_to_event;
  66
  67         LV2_Feature           _uri_map_feature;
  68         LV2_URI_Map_Feature   _uri_map_feature_data;
  69         LV2_Feature           _urid_map_feature;
  70         LV2_URID_Map          _urid_map_feature_data;
  71         LV2_Feature           _urid_unmap_feature;
  72         LV2_URID_Unmap        _urid_unmap_feature_data;
  73 };
  74
  75
  76 } // namespace ARDOUR
  77
  78 #endif // __ardour_uri_map_h__