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 PluginPtr
  30 AUPluginInfo::load (Session& session)
  31 {
  32
  33         return PluginPtr((AUPlugin*)0);
  34 }
  35
  36
  37 PluginInfoList
  38 AUPluginInfo::discover ()
  39 {
  40         PluginInfoList plugs;
  41
  42         int numTypes = 2;    // this magic number was retrieved from the apple AUHost example.
  43
  44         ComponentDescription desc;
  45         desc.componentFlags = 0;
  46         desc.componentFlagsMask = 0;
  47         desc.componentSubType = 0;
  48         desc.componentManufacturer = 0;
  49
  50         for (int i = 0; i < numTypes; ++i) {
  51                 if (i == 1) {
  52                         desc.componentType = kAudioUnitType_MusicEffect;
  53                 } else {
  54                         desc.componentType = kAudioUnitType_Effect;
  55                 }
  56
  57                 Component comp = 0;
  58
  59                 comp = FindNextComponent (NULL, &desc);
  60                 while (comp != NULL) {
  61                         ComponentDescription temp;
  62                         GetComponentInfo (comp, &temp, NULL, NULL, NULL);
  63
  64                         AUPluginInfoPtr plug(new AUPluginInfo);
  65                         plug->name = AUPluginInfo::get_name (temp);
  66                         plug->type = PluginInfo::AudioUnit;
  67                         plug->n_inputs = 0;
  68                         plug->n_outputs = 0;
  69                         plug->category = "AudioUnit";
  70                         plug->desc = CompDescPtr(new ComponentDescription(temp));
  71
  72                         plugs.push_back(plug);
  73
  74                         comp = FindNextComponent (comp, &desc);
  75                 }
  76         }
  77
  78         return plugs;
  79 }
  80
  81 std::string
  82 AUPluginInfo::get_name (ComponentDescription& comp_desc)
  83 {
  84                 CFStringRef itemName = NULL;
  85                 // Marc Poirier -style item name
  86                 Component auComponent = FindNextComponent (0, &comp_desc);
  87                 if (auComponent != NULL) {
  88                         ComponentDescription dummydesc;
  89                         Handle nameHandle = NewHandle(sizeof(void*));
  90                         if (nameHandle != NULL) {
  91                                 OSErr err = GetComponentInfo(auComponent, &dummydesc, nameHandle, NULL, NULL);
  92                                 if (err == noErr) {
  93                                         ConstStr255Param nameString = (ConstStr255Param) (*nameHandle);
  94                                         if (nameString != NULL) {
  95                                                 itemName = CFStringCreateWithPascalString(kCFAllocatorDefault, nameString, CFStringGetSystemEncoding());
  96                                         }
  97                                 }
  98                                 DisposeHandle(nameHandle);
  99                         }
 100                 }
 101
 102                 // if Marc-style fails, do the original way
 103                 if (itemName == NULL) {
 104                         CFStringRef compTypeString = UTCreateStringForOSType(comp_desc.componentType);
 105                         CFStringRef compSubTypeString = UTCreateStringForOSType(comp_desc.componentSubType);
 106                         CFStringRef compManufacturerString = UTCreateStringForOSType(comp_desc.componentManufacturer);
 107
 108                         itemName = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%@ - %@ - %@"),
 109                                 compTypeString, compManufacturerString, compSubTypeString);
 110
 111                         if (compTypeString != NULL)
 112                                 CFRelease(compTypeString);
 113                         if (compSubTypeString != NULL)
 114                                 CFRelease(compSubTypeString);
 115                         if (compManufacturerString != NULL)
 116                                 CFRelease(compManufacturerString);
 117                 }
 118
 119                 return CFStringRefToStdString(itemName);
 120 }