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 <glibmm/threads.h>
  28
  29 #include "lv2.h"
  30 #include "lv2/lv2plug.in/ns/ext/uri-map/uri-map.h"
  31 #include "lv2/lv2plug.in/ns/ext/urid/urid.h"
  32
  33 #include "ardour/libardour_visibility.h"
  34
  35 namespace ARDOUR {
  36
  37 /** Implementation of the LV2 uri-map and urid extensions.
  38  *
  39  * This just uses a pair of std::map and is not so great in the space overhead
  40  * department, but it's fast enough and not really performance critical anyway.
  41  */
  42 class LIBARDOUR_API URIMap : public boost::noncopyable {
  43 public:
  44         static URIMap& instance();
  45
  46         URIMap();
  47
  48         LV2_Feature* uri_map_feature()    { return &_uri_map_feature; }
  49         LV2_Feature* urid_map_feature()   { return &_urid_map_feature; }
  50         LV2_Feature* urid_unmap_feature() { return &_urid_unmap_feature; }
  51
  52         LV2_URID_Map*   urid_map()   { return &_urid_map_feature_data; }
  53         LV2_URID_Unmap* urid_unmap() { return &_urid_unmap_feature_data; }
  54
  55         uint32_t    uri_to_id(const char* uri);
  56         const char* id_to_uri(uint32_t id) const;
  57
  58         // Cached URIDs for use in real-time code
  59         struct URIDs {
  60                 void init(URIMap& uri_map);
  61
  62                 uint32_t atom_Chunk;
  63                 uint32_t atom_Path;
  64                 uint32_t atom_Sequence;
  65                 uint32_t atom_eventTransfer;
  66                 uint32_t atom_URID;
  67                 uint32_t atom_Blank;
  68                 uint32_t atom_Object;
  69                 uint32_t atom_Float;
  70                 uint32_t log_Error;
  71                 uint32_t log_Note;
  72                 uint32_t log_Warning;
  73                 uint32_t midi_MidiEvent;
  74                 uint32_t time_Position;
  75                 uint32_t time_bar;
  76                 uint32_t time_barBeat;
  77                 uint32_t time_beatUnit;
  78                 uint32_t time_beatsPerBar;
  79                 uint32_t time_beatsPerMinute;
  80                 uint32_t time_frame;
  81                 uint32_t time_speed;
  82                 uint32_t patch_Get;
  83                 uint32_t patch_Set;
  84                 uint32_t patch_property;
  85                 uint32_t patch_value;
  86 #ifdef LV2_EXTENDED
  87                 uint32_t auto_event;
  88                 uint32_t auto_setup;
  89                 uint32_t auto_finalize;
  90                 uint32_t auto_start;
  91                 uint32_t auto_end;
  92                 uint32_t auto_parameter;
  93                 uint32_t auto_value;
  94 #endif
  95         };
  96
  97         URIDs urids;
  98
  99 private:
 100         typedef std::map<const std::string, uint32_t> Map;
 101         typedef std::map<uint32_t, const std::string> Unmap;
 102
 103         Map   _map;
 104         Unmap _unmap;
 105
 106         LV2_Feature         _uri_map_feature;
 107         LV2_URI_Map_Feature _uri_map_feature_data;
 108         LV2_Feature         _urid_map_feature;
 109         LV2_URID_Map        _urid_map_feature_data;
 110         LV2_Feature         _urid_unmap_feature;
 111         LV2_URID_Unmap      _urid_unmap_feature_data;
 112
 113         mutable Glib::Threads::Mutex _lock;
 114
 115         static URIMap* uri_map;
 116 };
 117
 118 } // namespace ARDOUR
 119
 120 #endif // __ardour_uri_map_h__