/[svn]/linuxsampler/trunk/src/hostplugins/lv2/PluginLv2.h
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Contents of /linuxsampler/trunk/src/hostplugins/lv2/PluginLv2.h

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Revision 2356 - (show annotations) (download) (as text)
Sun Jul 8 14:44:47 2012 UTC (11 years, 8 months ago) by persson
File MIME type: text/x-c++hdr
File size: 4680 byte(s)
* LV2: use urid and atom extensions instead of deprecated uri-map and
  event
* LV2: lv2 package 1.0 is now required to build the LV2 plugin
* LV2: changed number of output channels to 16 stereo, just like the
  VST and AU plugins

1 /***************************************************************************
2 * *
3 * Copyright (C) 2008 - 2012 Andreas Persson *
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., 51 Franklin St, Fifth Floor, Boston, *
18 * MA 02110-1301 USA *
19 ***************************************************************************/
20
21 #ifndef LS_PLUGINLV2_H
22 #define LS_PLUGINLV2_H
23
24 #include "../../drivers/Plugin.h"
25
26 #include <lv2/lv2plug.in/ns/lv2core/lv2.h>
27 #include <lv2/lv2plug.in/ns/ext/atom/atom.h>
28 #include <lv2/lv2plug.in/ns/ext/state/state.h>
29 #include <lv2/lv2plug.in/ns/ext/urid/urid.h>
30
31 namespace {
32
33 class PluginLv2 : public LinuxSampler::Plugin {
34 public:
35 PluginLv2(const LV2_Descriptor* Descriptor,
36 double SampleRate, const char* BundlePath,
37 const LV2_Feature* const* Features);
38 ~PluginLv2();
39 void ConnectPort(uint32_t Port, void* DataLocation);
40 void Activate();
41 void Run(uint32_t SampleCount);
42 void Deactivate();
43 LV2_State_Status Save(LV2_State_Store_Function store, void* data,
44 uint32_t flags, const LV2_Feature* const* features);
45 LV2_State_Status Restore(LV2_State_Retrieve_Function retrieve, void* data,
46 uint32_t flags, const LV2_Feature* const* features);
47
48 protected:
49 virtual String PathToState(const String& string);
50 virtual String PathFromState(const String& string);
51
52 private:
53 LV2_URID uri_to_id(const char* uri) {
54 return UriMap->map(UriMap->handle, uri);
55 }
56
57 void SetStateFeatures(const LV2_Feature* const* Features);
58
59 float** Out;
60 LV2_Atom_Sequence* MidiBuf;
61 LV2_URID_Map* UriMap;
62 LV2_URID MidiEventType;
63 LV2_State_Map_Path* MapPath;
64 LV2_State_Make_Path* MakePath;
65
66 String DefaultState;
67 };
68
69 class PluginInfo {
70 public:
71 static const LV2_Descriptor* Lv2Descriptor() {
72 return &Instance.Lv2;
73 }
74 static const LV2_State_Interface* Lv2StateInterface() {
75 return &Instance.StateInterface;
76 }
77 private:
78 LV2_Descriptor Lv2;
79 LV2_State_Interface StateInterface;
80
81 PluginInfo();
82 static PluginInfo Instance;
83 };
84
85 extern "C" {
86 static LV2_Handle instantiate(const LV2_Descriptor* descriptor,
87 double sample_rate, const char* bundle_path,
88 const LV2_Feature* const* features);
89 static void connect_port(LV2_Handle instance, uint32_t port,
90 void* data_location);
91 static void activate(LV2_Handle instance);
92 static void run(LV2_Handle instance, uint32_t sample_count);
93 static void deactivate(LV2_Handle instance);
94 static void cleanup(LV2_Handle instance);
95 static const void* extension_data(const char* uri);
96
97 static LV2_State_Status save(LV2_Handle handle,
98 LV2_State_Store_Function store,
99 LV2_State_Handle state, uint32_t flags,
100 const LV2_Feature* const* features);
101
102 static LV2_State_Status restore(LV2_Handle handle,
103 LV2_State_Retrieve_Function retrieve,
104 LV2_State_Handle state, uint32_t flags,
105 const LV2_Feature* const* features);
106 }
107 }
108
109 #endif

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