libs/ardour/audio_unit.cc

   1 /*
   2     Copyright (C) 2006 Paul Davis
   3         Written by Taybin Rutkin
   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
  21 #include <ardour/audio_unit.h>
  22 #include <ardour/utils.h>
  23
  24 #include <CoreServices/CoreServices.h>
  25 #include <AudioUnit/AudioUnit.h>
  26
  27 using namespace ARDOUR;
  28
  29 PluginInfoList
  30 AUPluginInfo::discover ()
  31 {
  32         PluginInfoList plugs;
  33
  34         int numTypes = 2;    // this magic number was retrieved from the apple AUHost example.
  35
  36         ComponentDescription desc;
  37         desc.componentFlags = 0;
  38         desc.componentFlagsMask = 0;
  39         desc.componentSubType = 0;
  40         desc.componentManufacturer = 0;
  41
  42         vector<ComponentDescription> vCompDescs;
  43
  44         for (int i = 0; i < numTypes; ++i) {
  45                 if (i == 1) {
  46                         desc.componentType = kAudioUnitType_MusicEffect;
  47                 } else {
  48                         desc.componentType = kAudioUnitType_Effect;
  49                 }
  50
  51                 Component comp = 0;
  52
  53                 comp = FindNextComponent (NULL, &desc);
  54                 while (comp != NULL) {
  55                         ComponentDescription temp;
  56                         GetComponentInfo (comp, &temp, NULL, NULL, NULL);
  57                         vCompDescs.push_back(temp);
  58                         comp = FindNextComponent (comp, &desc);
  59                 }
  60         }
  61
  62         for (unsigned int i = 0; i < vCompDescs.size(); ++i) {
  63
  64                 // the following large block is just for determining the name of the plugin.
  65                 CFStringRef itemName = NULL;
  66                 // Marc Poirier -style item name
  67                 Component auComponent = FindNextComponent (0, &(vCompDescs[i]));
  68                 if (auComponent != NULL) {
  69                         ComponentDescription dummydesc;
  70                         Handle nameHandle = NewHandle(sizeof(void*));
  71                         if (nameHandle != NULL) {
  72                                 OSErr err = GetComponentInfo(auComponent, &dummydesc, nameHandle, NULL, NULL);
  73                                 if (err == noErr) {
  74                                         ConstStr255Param nameString = (ConstStr255Param) (*nameHandle);
  75                                         if (nameString != NULL) {
  76                                                 itemName = CFStringCreateWithPascalString(kCFAllocatorDefault, nameString, CFStringGetSystemEncoding());
  77                                         }
  78                                 }
  79                                 DisposeHandle(nameHandle);
  80                         }
  81                 }
  82
  83                 // if Marc-style fails, do the original way
  84                 if (itemName == NULL) {
  85                         CFStringRef compTypeString = UTCreateStringForOSType(vCompDescs[i].componentType);
  86                         CFStringRef compSubTypeString = UTCreateStringForOSType(vCompDescs[i].componentSubType);
  87                         CFStringRef compManufacturerString = UTCreateStringForOSType(vCompDescs[i].componentManufacturer);
  88
  89                         itemName = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%@ - %@ - %@"),
  90                                 compTypeString, compManufacturerString, compSubTypeString);
  91
  92                         if (compTypeString != NULL)
  93                                 CFRelease(compTypeString);
  94                         if (compSubTypeString != NULL)
  95                                 CFRelease(compSubTypeString);
  96                         if (compManufacturerString != NULL)
  97                                 CFRelease(compManufacturerString);
  98                 }
  99                 string realname = CFStringRefToStdString(itemName);
 100
 101                 AUPluginInfoPtr plug(new AUPluginInfo);
 102                 plug->name = realname;
 103                 plug->type = PluginInfo::AudioUnit;
 104                 plug->n_inputs = 0;
 105                 plug->n_outputs = 0;
 106                 plug->category = "AudioUnit";
 107
 108                 plugs.push_back(plug);
 109         }
 110
 111         return plugs;
 112 }