libs/ardour/audio_unit.cc

   1 /*
   2     Copyright (C) 2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <sstream>
  21 #include <errno.h>
  22 #include <string.h>
  23
  24 #include "pbd/transmitter.h"
  25 #include "pbd/xml++.h"
  26 #include "pbd/whitespace.h"
  27 #include "pbd/pathscanner.h"
  28
  29 #include <glibmm/thread.h>
  30 #include <glibmm/fileutils.h>
  31 #include <glibmm/miscutils.h>
  32
  33 #include "ardour/ardour.h"
  34 #include "ardour/audioengine.h"
  35 #include "ardour/io.h"
  36 #include "ardour/audio_unit.h"
  37 #include "ardour/session.h"
  38 #include "ardour/utils.h"
  39
  40 #include <appleutility/CAAudioUnit.h>
  41 #include <appleutility/CAAUParameter.h>
  42
  43 #include <CoreFoundation/CoreFoundation.h>
  44 #include <CoreServices/CoreServices.h>
  45
  46 #include "i18n.h"
  47
  48 using namespace std;
  49 using namespace PBD;
  50 using namespace ARDOUR;
  51
  52 #ifndef AU_STATE_SUPPORT
  53 static bool seen_get_state_message = false;
  54 static bool seen_set_state_message = false;
  55 static bool seen_loading_message = false;
  56 static bool seen_saving_message = false;
  57 #endif
  58
  59 AUPluginInfo::CachedInfoMap AUPluginInfo::cached_info;
  60
  61 static string preset_search_path = "/Library/Audio/Presets:/Network/Library/Audio/Presets";
  62 static string preset_suffix = ".aupreset";
  63 static bool preset_search_path_initialized = false;
  64
  65 static OSStatus
  66 _render_callback(void *userData,
  67                  AudioUnitRenderActionFlags *ioActionFlags,
  68                  const AudioTimeStamp    *inTimeStamp,
  69                  UInt32       inBusNumber,
  70                  UInt32       inNumberFrames,
  71                  AudioBufferList*       ioData)
  72 {
  73         return ((AUPlugin*)userData)->render_callback (ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, ioData);
  74 }
  75
  76 static int
  77 save_property_list (CFPropertyListRef propertyList, Glib::ustring path)
  78
  79 {
  80         CFDataRef xmlData;
  81         int fd;
  82
  83         // Convert the property list into XML data.
  84
  85         xmlData = CFPropertyListCreateXMLData( kCFAllocatorDefault, propertyList);
  86
  87         if (!xmlData) {
  88                 error << _("Could not create XML version of property list") << endmsg;
  89                 return -1;
  90         }
  91
  92         // Write the XML data to the file.
  93
  94         fd = open (path.c_str(), O_WRONLY|O_CREAT|O_EXCL, 0664);
  95         while (fd < 0) {
  96                 if (errno == EEXIST) {
  97                         /* tell any UI's that this file already exists and ask them what to do */
  98                         bool overwrite = Plugin::PresetFileExists(); // EMIT SIGNAL
  99                         if (overwrite) {
 100                                 fd = open (path.c_str(), O_WRONLY, 0664);
 101                                 continue;
 102                         } else {
 103                                 return 0;
 104                         }
 105                 }
 106                 error << string_compose (_("Cannot open preset file %1 (%2)"), path, strerror (errno)) << endmsg;
 107                 CFRelease (xmlData);
 108                 return -1;
 109         }
 110
 111         size_t cnt = CFDataGetLength (xmlData);
 112
 113         if (write (fd, CFDataGetBytePtr (xmlData), cnt) != cnt) {
 114                 CFRelease (xmlData);
 115                 close (fd);
 116                 return -1;
 117         }
 118
 119         close (fd);
 120         return 0;
 121 }
 122
 123
 124 static CFPropertyListRef
 125 load_property_list (Glib::ustring path)
 126 {
 127         int fd;
 128         CFPropertyListRef propertyList;
 129         CFDataRef         xmlData;
 130         CFStringRef       errorString;
 131
 132         // Read the XML file.
 133
 134         if ((fd = open (path.c_str(), O_RDONLY)) < 0) {
 135                 return propertyList;
 136
 137         }
 138
 139         off_t len = lseek (fd, 0, SEEK_END);
 140         char* buf = new char[len];
 141         lseek (fd, 0, SEEK_SET);
 142
 143         if (read (fd, buf, len) != len) {
 144                 delete [] buf;
 145                 close (fd);
 146                 return propertyList;
 147         }
 148
 149         close (fd);
 150
 151         xmlData = CFDataCreateWithBytesNoCopy (kCFAllocatorDefault, (UInt8*) buf, len, kCFAllocatorNull);
 152
 153         // Reconstitute the dictionary using the XML data.
 154
 155         propertyList = CFPropertyListCreateFromXMLData( kCFAllocatorDefault,
 156                                                         xmlData,
 157                                                         kCFPropertyListImmutable,
 158                                                         &errorString);
 159
 160         CFRelease (xmlData);
 161         delete [] buf;
 162
 163         return propertyList;
 164 }
 165
 166 //-----------------------------------------------------------------------------
 167 static void
 168 set_preset_name_in_plist (CFPropertyListRef plist, string preset_name)
 169 {
 170         if (!plist) {
 171                 return;
 172         }
 173         CFStringRef pn = CFStringCreateWithCString (kCFAllocatorDefault, preset_name.c_str(), kCFStringEncodingUTF8);
 174
 175         if (CFGetTypeID (plist) == CFDictionaryGetTypeID()) {
 176                 CFDictionarySetValue ((CFMutableDictionaryRef)plist, CFSTR(kAUPresetNameKey), pn);
 177         }
 178
 179         CFRelease (pn);
 180 }
 181
 182 //-----------------------------------------------------------------------------
 183 static std::string
 184 get_preset_name_in_plist (CFPropertyListRef plist)
 185 {
 186         std::string ret;
 187
 188         if (!plist) {
 189                 return ret;
 190         }
 191
 192         if (CFGetTypeID (plist) == CFDictionaryGetTypeID()) {
 193                 const void *p = CFDictionaryGetValue ((CFMutableDictionaryRef)plist, CFSTR(kAUPresetNameKey));
 194                 if (p) {
 195                         CFStringRef str = (CFStringRef) p;
 196                         int len = CFStringGetLength(str);
 197                         len =  (len * 2) + 1;
 198                         char local_buffer[len];
 199                         if (CFStringGetCString (str, local_buffer, len, kCFStringEncodingUTF8)) {
 200                                 ret = local_buffer;
 201                         }
 202                 }
 203         }
 204         return ret;
 205 }
 206
 207 //--------------------------------------------------------------------------
 208 // general implementation for ComponentDescriptionsMatch() and ComponentDescriptionsMatch_Loosely()
 209 // if inIgnoreType is true, then the type code is ignored in the ComponentDescriptions
 210 Boolean ComponentDescriptionsMatch_General(const ComponentDescription * inComponentDescription1, const ComponentDescription * inComponentDescription2, Boolean inIgnoreType);
 211 Boolean ComponentDescriptionsMatch_General(const ComponentDescription * inComponentDescription1, const ComponentDescription * inComponentDescription2, Boolean inIgnoreType)
 212 {
 213         if ( (inComponentDescription1 == NULL) || (inComponentDescription2 == NULL) )
 214                 return FALSE;
 215
 216         if ( (inComponentDescription1->componentSubType == inComponentDescription2->componentSubType)
 217                         && (inComponentDescription1->componentManufacturer == inComponentDescription2->componentManufacturer) )
 218         {
 219                 // only sub-type and manufacturer IDs need to be equal
 220                 if (inIgnoreType)
 221                         return TRUE;
 222                 // type, sub-type, and manufacturer IDs all need to be equal in order to call this a match
 223                 else if (inComponentDescription1->componentType == inComponentDescription2->componentType)
 224                         return TRUE;
 225         }
 226
 227         return FALSE;
 228 }
 229
 230 //--------------------------------------------------------------------------
 231 // general implementation for ComponentAndDescriptionMatch() and ComponentAndDescriptionMatch_Loosely()
 232 // if inIgnoreType is true, then the type code is ignored in the ComponentDescriptions
 233 Boolean ComponentAndDescriptionMatch_General(Component inComponent, const ComponentDescription * inComponentDescription, Boolean inIgnoreType);
 234 Boolean ComponentAndDescriptionMatch_General(Component inComponent, const ComponentDescription * inComponentDescription, Boolean inIgnoreType)
 235 {
 236         OSErr status;
 237         ComponentDescription desc;
 238
 239         if ( (inComponent == NULL) || (inComponentDescription == NULL) )
 240                 return FALSE;
 241
 242         // get the ComponentDescription of the input Component
 243         status = GetComponentInfo(inComponent, &desc, NULL, NULL, NULL);
 244         if (status != noErr)
 245                 return FALSE;
 246
 247         // check if the Component's ComponentDescription matches the input ComponentDescription
 248         return ComponentDescriptionsMatch_General(&desc, inComponentDescription, inIgnoreType);
 249 }
 250
 251 //--------------------------------------------------------------------------
 252 // determine if 2 ComponentDescriptions are basically equal
 253 // (by that, I mean that the important identifying values are compared,
 254 // but not the ComponentDescription flags)
 255 Boolean ComponentDescriptionsMatch(const ComponentDescription * inComponentDescription1, const ComponentDescription * inComponentDescription2)
 256 {
 257         return ComponentDescriptionsMatch_General(inComponentDescription1, inComponentDescription2, FALSE);
 258 }
 259
 260 //--------------------------------------------------------------------------
 261 // determine if 2 ComponentDescriptions have matching sub-type and manufacturer codes
 262 Boolean ComponentDescriptionsMatch_Loose(const ComponentDescription * inComponentDescription1, const ComponentDescription * inComponentDescription2)
 263 {
 264         return ComponentDescriptionsMatch_General(inComponentDescription1, inComponentDescription2, TRUE);
 265 }
 266
 267 //--------------------------------------------------------------------------
 268 // determine if a ComponentDescription basically matches that of a particular Component
 269 Boolean ComponentAndDescriptionMatch(Component inComponent, const ComponentDescription * inComponentDescription)
 270 {
 271         return ComponentAndDescriptionMatch_General(inComponent, inComponentDescription, FALSE);
 272 }
 273
 274 //--------------------------------------------------------------------------
 275 // determine if a ComponentDescription matches only the sub-type and manufacturer codes of a particular Component
 276 Boolean ComponentAndDescriptionMatch_Loosely(Component inComponent, const ComponentDescription * inComponentDescription)
 277 {
 278         return ComponentAndDescriptionMatch_General(inComponent, inComponentDescription, TRUE);
 279 }
 280
 281
 282 AUPlugin::AUPlugin (AudioEngine& engine, Session& session, boost::shared_ptr<CAComponent> _comp)
 283         : Plugin (engine, session),
 284           comp (_comp),
 285           unit (new CAAudioUnit),
 286           initialized (false),
 287           buffers (0),
 288           current_maxbuf (0),
 289           current_offset (0),
 290           current_buffers (0),
 291         frames_processed (0)
 292 {
 293         if (!preset_search_path_initialized) {
 294                 Glib::ustring p = Glib::get_home_dir();
 295                 p += "/Library/Audio/Presets:";
 296                 p += preset_search_path;
 297                 preset_search_path = p;
 298                 preset_search_path_initialized = true;
 299         }
 300
 301         init ();
 302 }
 303
 304 AUPlugin::AUPlugin (const AUPlugin& other)
 305         : Plugin (other)
 306         , comp (other.get_comp())
 307         , unit (new CAAudioUnit)
 308         , initialized (false)
 309         , buffers (0)
 310         , current_maxbuf (0)
 311         , current_offset (0)
 312         , current_buffers (0)
 313         , frames_processed (0)
 314
 315 {
 316         init ();
 317 }
 318
 319 AUPlugin::~AUPlugin ()
 320 {
 321         if (unit) {
 322                 unit->Uninitialize ();
 323         }
 324
 325         free (buffers);
 326 }
 327
 328
 329 void
 330 AUPlugin::init ()
 331 {
 332         OSErr err;
 333
 334         try {
 335                 err = CAAudioUnit::Open (*(comp.get()), *unit);
 336         } catch (...) {
 337                 error << _("Exception thrown during AudioUnit plugin loading - plugin ignored") << endmsg;
 338                 throw failed_constructor();
 339         }
 340
 341         if (err != noErr) {
 342                 error << _("AudioUnit: Could not convert CAComponent to CAAudioUnit") << endmsg;
 343                 throw failed_constructor ();
 344         }
 345
 346         AURenderCallbackStruct renderCallbackInfo;
 347
 348         renderCallbackInfo.inputProc = _render_callback;
 349         renderCallbackInfo.inputProcRefCon = this;
 350
 351         if ((err = unit->SetProperty (kAudioUnitProperty_SetRenderCallback, kAudioUnitScope_Input,
 352                                          0, (void*) &renderCallbackInfo, sizeof(renderCallbackInfo))) != 0) {
 353                 cerr << "cannot install render callback (err = " << err << ')' << endl;
 354                 throw failed_constructor();
 355         }
 356
 357         unit->GetElementCount (kAudioUnitScope_Global, global_elements);
 358         unit->GetElementCount (kAudioUnitScope_Input, input_elements);
 359         unit->GetElementCount (kAudioUnitScope_Output, output_elements);
 360
 361         /* these keep track of *configured* channel set up,
 362            not potential set ups.
 363         */
 364
 365         input_channels = ChanCount::ZERO;
 366         output_channels = ChanCount::ZERO;
 367
 368         if (_set_block_size (_session.get_block_size())) {
 369                 error << _("AUPlugin: cannot set processing block size") << endmsg;
 370                 throw failed_constructor();
 371         }
 372
 373         discover_parameters ();
 374
 375         Plugin::setup_controls ();
 376 }
 377
 378 void
 379 AUPlugin::discover_parameters ()
 380 {
 381         /* discover writable parameters */
 382
 383         AudioUnitScope scopes[] = {
 384                 kAudioUnitScope_Global,
 385                 kAudioUnitScope_Output,
 386                 kAudioUnitScope_Input
 387         };
 388
 389         descriptors.clear ();
 390
 391         for (uint32_t i = 0; i < sizeof (scopes) / sizeof (scopes[0]); ++i) {
 392
 393                 AUParamInfo param_info (unit->AU(), false, false, scopes[i]);
 394
 395                 for (uint32_t i = 0; i < param_info.NumParams(); ++i) {
 396
 397                         AUParameterDescriptor d;
 398
 399                         d.id = param_info.ParamID (i);
 400
 401                         const CAAUParameter* param = param_info.GetParamInfo (d.id);
 402                         const AudioUnitParameterInfo& info (param->ParamInfo());
 403
 404                         const int len = CFStringGetLength (param->GetName());;
 405                         char local_buffer[len*2];
 406                         Boolean good = CFStringGetCString(param->GetName(),local_buffer,len*2,kCFStringEncodingMacRoman);
 407                         if (!good) {
 408                                 d.label = "???";
 409                         } else {
 410                                 d.label = local_buffer;
 411                         }
 412
 413                         d.scope = param_info.GetScope ();
 414                         d.element = param_info.GetElement ();
 415
 416                         /* info.units to consider */
 417                         /*
 418                           kAudioUnitParameterUnit_Generic             = 0
 419                           kAudioUnitParameterUnit_Indexed             = 1
 420                           kAudioUnitParameterUnit_Boolean             = 2
 421                           kAudioUnitParameterUnit_Percent             = 3
 422                           kAudioUnitParameterUnit_Seconds             = 4
 423                           kAudioUnitParameterUnit_SampleFrames        = 5
 424                           kAudioUnitParameterUnit_Phase               = 6
 425                           kAudioUnitParameterUnit_Rate                = 7
 426                           kAudioUnitParameterUnit_Hertz               = 8
 427                           kAudioUnitParameterUnit_Cents               = 9
 428                           kAudioUnitParameterUnit_RelativeSemiTones   = 10
 429                           kAudioUnitParameterUnit_MIDINoteNumber      = 11
 430                           kAudioUnitParameterUnit_MIDIController      = 12
 431                           kAudioUnitParameterUnit_Decibels            = 13
 432                           kAudioUnitParameterUnit_LinearGain          = 14
 433                           kAudioUnitParameterUnit_Degrees             = 15
 434                           kAudioUnitParameterUnit_EqualPowerCrossfade = 16
 435                           kAudioUnitParameterUnit_MixerFaderCurve1    = 17
 436                           kAudioUnitParameterUnit_Pan                 = 18
 437                           kAudioUnitParameterUnit_Meters              = 19
 438                           kAudioUnitParameterUnit_AbsoluteCents       = 20
 439                           kAudioUnitParameterUnit_Octaves             = 21
 440                           kAudioUnitParameterUnit_BPM                 = 22
 441                           kAudioUnitParameterUnit_Beats               = 23
 442                           kAudioUnitParameterUnit_Milliseconds        = 24
 443                           kAudioUnitParameterUnit_Ratio               = 25
 444                         */
 445
 446                         /* info.flags to consider */
 447
 448                         /*
 449
 450                           kAudioUnitParameterFlag_CFNameRelease       = (1L << 4)
 451                           kAudioUnitParameterFlag_HasClump            = (1L << 20)
 452                           kAudioUnitParameterFlag_HasName             = (1L << 21)
 453                           kAudioUnitParameterFlag_DisplayLogarithmic  = (1L << 22)
 454                           kAudioUnitParameterFlag_IsHighResolution    = (1L << 23)
 455                           kAudioUnitParameterFlag_NonRealTime         = (1L << 24)
 456                           kAudioUnitParameterFlag_CanRamp             = (1L << 25)
 457                           kAudioUnitParameterFlag_ExpertMode          = (1L << 26)
 458                           kAudioUnitParameterFlag_HasCFNameString     = (1L << 27)
 459                           kAudioUnitParameterFlag_IsGlobalMeta        = (1L << 28)
 460                           kAudioUnitParameterFlag_IsElementMeta       = (1L << 29)
 461                           kAudioUnitParameterFlag_IsReadable          = (1L << 30)
 462                           kAudioUnitParameterFlag_IsWritable          = (1L << 31)
 463                         */
 464
 465                         d.lower = info.minValue;
 466                         d.upper = info.maxValue;
 467                         d.default_value = info.defaultValue;
 468
 469                         d.integer_step = (info.unit & kAudioUnitParameterUnit_Indexed);
 470                         d.toggled = (info.unit & kAudioUnitParameterUnit_Boolean) ||
 471                                 (d.integer_step && ((d.upper - d.lower) == 1.0));
 472                         d.sr_dependent = (info.unit & kAudioUnitParameterUnit_SampleFrames);
 473                         d.automatable = !d.toggled &&
 474                                 !(info.flags & kAudioUnitParameterFlag_NonRealTime) &&
 475                                 (info.flags & kAudioUnitParameterFlag_IsWritable);
 476
 477                         d.logarithmic = (info.flags & kAudioUnitParameterFlag_DisplayLogarithmic);
 478                         d.unit = info.unit;
 479
 480                         d.step = 1.0;
 481                         d.smallstep = 0.1;
 482                         d.largestep = 10.0;
 483                         d.min_unbound = 0; // lower is bound
 484                         d.max_unbound = 0; // upper is bound
 485
 486                         descriptors.push_back (d);
 487                 }
 488         }
 489 }
 490
 491
 492 string
 493 AUPlugin::unique_id () const
 494 {
 495         return AUPluginInfo::stringify_descriptor (comp->Desc());
 496 }
 497
 498 const char *
 499 AUPlugin::label () const
 500 {
 501         return _info->name.c_str();
 502 }
 503
 504 uint32_t
 505 AUPlugin::parameter_count () const
 506 {
 507         return descriptors.size();
 508 }
 509
 510 float
 511 AUPlugin::default_value (uint32_t port)
 512 {
 513         if (port < descriptors.size()) {
 514                 return descriptors[port].default_value;
 515         }
 516
 517         return 0;
 518 }
 519
 520 nframes_t
 521 AUPlugin::latency () const
 522 {
 523         return unit->Latency() * _session.frame_rate();
 524 }
 525
 526 void
 527 AUPlugin::set_parameter (uint32_t which, float val)
 528 {
 529         if (which < descriptors.size()) {
 530                 const AUParameterDescriptor& d (descriptors[which]);
 531                 unit->SetParameter (d.id, d.scope, d.element, val);
 532         }
 533 }
 534
 535 float
 536 AUPlugin::get_parameter (uint32_t which) const
 537 {
 538         float val = 0.0;
 539         if (which < descriptors.size()) {
 540                 const AUParameterDescriptor& d (descriptors[which]);
 541                 unit->GetParameter(d.id, d.scope, d.element, val);
 542         }
 543         return val;
 544 }
 545
 546 int
 547 AUPlugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& pd) const
 548 {
 549         if (which < descriptors.size()) {
 550                 pd = descriptors[which];
 551                 return 0;
 552         }
 553         return -1;
 554 }
 555
 556 uint32_t
 557 AUPlugin::nth_parameter (uint32_t which, bool& ok) const
 558 {
 559         if (which < descriptors.size()) {
 560                 ok = true;
 561                 return which;
 562         }
 563         ok = false;
 564         return 0;
 565 }
 566
 567 void
 568 AUPlugin::activate ()
 569 {
 570         if (!initialized) {
 571                 OSErr err;
 572                 if ((err = unit->Initialize()) != noErr) {
 573                         error << string_compose (_("AUPlugin: %1 cannot initialize plugin (err = %2)"), name(), err) << endmsg;
 574                 } else {
 575                         frames_processed = 0;
 576                         initialized = true;
 577                 }
 578         }
 579 }
 580
 581 void
 582 AUPlugin::deactivate ()
 583 {
 584         unit->GlobalReset ();
 585 }
 586
 587 void
 588 AUPlugin::set_block_size (nframes_t nframes)
 589 {
 590         _set_block_size (nframes);
 591 }
 592
 593 int
 594 AUPlugin::_set_block_size (nframes_t nframes)
 595 {
 596         bool was_initialized = initialized;
 597         UInt32 numFrames = nframes;
 598         OSErr err;
 599
 600         if (initialized) {
 601                 unit->Uninitialize ();
 602                 initialized = false;
 603         }
 604
 605         if ((err = unit->SetProperty (kAudioUnitProperty_MaximumFramesPerSlice, kAudioUnitScope_Global,
 606                                       0, &numFrames, sizeof (numFrames))) != noErr) {
 607                 cerr << "cannot set max frames (err = " << err << ')' << endl;
 608                 return -1;
 609         }
 610
 611         if (was_initialized) {
 612                 activate ();
 613         }
 614
 615         return 0;
 616 }
 617
 618 int32_t
 619 AUPlugin::configure_io (int32_t in, int32_t out)
 620 {
 621         AudioStreamBasicDescription streamFormat;
 622
 623         streamFormat.mSampleRate = _session.frame_rate();
 624         streamFormat.mFormatID = kAudioFormatLinearPCM;
 625         streamFormat.mFormatFlags = kAudioFormatFlagIsFloat|kAudioFormatFlagIsPacked|kAudioFormatFlagIsNonInterleaved;
 626
 627 #ifdef __LITTLE_ENDIAN__
 628         /* relax */
 629 #else
 630         streamFormat.mFormatFlags |= kAudioFormatFlagIsBigEndian;
 631 #endif
 632
 633         streamFormat.mBitsPerChannel = 32;
 634         streamFormat.mFramesPerPacket = 1;
 635
 636         /* apple says that for non-interleaved data, these
 637            values always refer to a single channel.
 638         */
 639         streamFormat.mBytesPerPacket = 4;
 640         streamFormat.mBytesPerFrame = 4;
 641
 642         streamFormat.mChannelsPerFrame = in;
 643
 644         if (set_input_format (streamFormat) != 0) {
 645                 return -1;
 646         }
 647
 648         streamFormat.mChannelsPerFrame = out;
 649
 650         if (set_output_format (streamFormat) != 0) {
 651                 return -1;
 652         }
 653
 654         return Plugin::configure_io (in, out);
 655 }
 656
 657 int32_t
 658 AUPlugin::can_do (int32_t in, int32_t& out)
 659 {
 660         // XXX as of May 13th 2008, AU plugin support returns a count of either 1 or -1. We never
 661         // attempt to multiply-instantiate plugins to meet io configurations.
 662
 663         int32_t plugcnt = -1;
 664         AUPluginInfoPtr pinfo = boost::dynamic_pointer_cast<AUPluginInfo>(get_info());
 665
 666         out = -1;
 667
 668         vector<pair<int,int> >& io_configs = pinfo->cache.io_configs;
 669
 670         for (vector<pair<int,int> >::iterator i = io_configs.begin(); i != io_configs.end(); ++i) {
 671
 672                 int32_t possible_in = i->first;
 673                 int32_t possible_out = i->second;
 674
 675                 if (possible_out == 0) {
 676                         warning << string_compose (_("AU %1 has zero outputs - configuration ignored"), name()) << endmsg;
 677                         continue;
 678                 }
 679
 680                 if (possible_in == 0) {
 681
 682                         /* instrument plugin, always legal but throws away inputs ...
 683                         */
 684
 685                         if (possible_out == -1) {
 686                                 /* out much match in (UNLIKELY!!) */
 687                                 out = in;
 688                                 plugcnt = 1;
 689                         } else if (possible_out == -2) {
 690                                 /* any configuration possible, pick matching */
 691                                 out = in;
 692                                 plugcnt = 1;
 693                         } else if (possible_out < -2) {
 694                                 /* explicit variable number of outputs, pick maximum */
 695                                 out = -possible_out;
 696                                 plugcnt = 1;
 697                         } else {
 698                                 /* exact number of outputs */
 699                                 out = possible_out;
 700                                 plugcnt = 1;
 701                         }
 702                 }
 703
 704                 if (possible_in == -1) {
 705
 706                         /* wildcard for input */
 707
 708                         if (possible_out == -1) {
 709                                 /* out much match in */
 710                                 out = in;
 711                                 plugcnt = 1;
 712                         } else if (possible_out == -2) {
 713                                 /* any configuration possible, pick matching */
 714                                 out = in;
 715                                 plugcnt = 1;
 716                         } else if (possible_out < -2) {
 717                                 /* explicit variable number of outputs, pick maximum */
 718                                 out = -possible_out;
 719                                 plugcnt = 1;
 720                         } else {
 721                                 /* exact number of outputs */
 722                                 out = possible_out;
 723                                 plugcnt = 1;
 724                         }
 725                 }
 726
 727                 if (possible_in == -2) {
 728
 729                         if (possible_out == -1) {
 730                                 /* any configuration possible, pick matching */
 731                                 out = in;
 732                                 plugcnt = 1;
 733                         } else if (possible_out == -2) {
 734                                 error << string_compose (_("AU plugin %1 has illegal IO configuration (-2,-2)"), name())
 735                                       << endmsg;
 736                                 plugcnt = -1;
 737                         } else if (possible_out < -2) {
 738                                 /* explicit variable number of outputs, pick maximum */
 739                                 out = -possible_out;
 740                                 plugcnt = 1;
 741                         } else {
 742                                 /* exact number of outputs */
 743                                 out = possible_out;
 744                                 plugcnt = 1;
 745                         }
 746                 }
 747
 748                 if (possible_in < -2) {
 749
 750                         /* explicit variable number of inputs */
 751
 752                         if (in > -possible_in) {
 753                                 /* request is too large */
 754                                 plugcnt = -1;
 755                         }
 756
 757                         if (possible_out == -1) {
 758                                 /* out must match in */
 759                                 out = in;
 760                                 plugcnt = 1;
 761                         } else if (possible_out == -2) {
 762                                 error << string_compose (_("AU plugin %1 has illegal IO configuration (-2,-2)"), name())
 763                                       << endmsg;
 764                                 plugcnt = -1;
 765                         } else if (possible_out < -2) {
 766                                 /* explicit variable number of outputs, pick maximum */
 767                                 out = -possible_out;
 768                                 plugcnt = 1;
 769                         } else {
 770                                 /* exact number of outputs */
 771                                 out = possible_out;
 772                                 plugcnt = 1;
 773                         }
 774                 }
 775
 776                 if (possible_in == in) {
 777
 778                         /* exact number of inputs ... must match obviously */
 779
 780                         if (possible_out == -1) {
 781                                 /* out must match in */
 782                                 out = in;
 783                                 plugcnt = 1;
 784                         } else if (possible_out == -2) {
 785                                 /* any output configuration, pick matching */
 786                                 out = in;
 787                                 plugcnt = -1;
 788                         } else if (possible_out < -2) {
 789                                 /* explicit variable number of outputs, pick maximum */
 790                                 out = -possible_out;
 791                                 plugcnt = 1;
 792                         } else {
 793                                 /* exact number of outputs */
 794                                 out = possible_out;
 795                                 plugcnt = 1;
 796                         }
 797                 }
 798
 799                 if (plugcnt == 1) {
 800                         break;
 801                 }
 802         }
 803
 804         /* no fit */
 805         return plugcnt;
 806 }
 807
 808 int
 809 AUPlugin::set_input_format (AudioStreamBasicDescription& fmt)
 810 {
 811         return set_stream_format (kAudioUnitScope_Input, input_elements, fmt);
 812 }
 813
 814 int
 815 AUPlugin::set_output_format (AudioStreamBasicDescription& fmt)
 816 {
 817         if (set_stream_format (kAudioUnitScope_Output, output_elements, fmt) != 0) {
 818                 return -1;
 819         }
 820
 821         if (buffers) {
 822                 free (buffers);
 823                 buffers = 0;
 824         }
 825
 826         buffers = (AudioBufferList *) malloc (offsetof(AudioBufferList, mBuffers) +
 827                                               fmt.mChannelsPerFrame * sizeof(AudioBuffer));
 828
 829         Glib::Mutex::Lock em (_session.engine().process_lock());
 830         IO::MoreOutputs (fmt.mChannelsPerFrame);
 831
 832         return 0;
 833 }
 834
 835 int
 836 AUPlugin::set_stream_format (int scope, uint32_t cnt, AudioStreamBasicDescription& fmt)
 837 {
 838         OSErr result;
 839
 840         for (uint32_t i = 0; i < cnt; ++i) {
 841                 if ((result = unit->SetFormat (scope, i, fmt)) != 0) {
 842                         error << string_compose (_("AUPlugin: could not set stream format for %1/%2 (err = %3)"),
 843                                                  (scope == kAudioUnitScope_Input ? "input" : "output"), i, result) << endmsg;
 844                         return -1;
 845                 }
 846         }
 847
 848         if (scope == kAudioUnitScope_Input) {
 849                 input_channels.setAudio( fmt.mChannelsPerFrame );
 850         } else {
 851                 output_channels.setAudio( fmt.mChannelsPerFrame );
 852         }
 853
 854         return 0;
 855 }
 856
 857 ChanCount
 858 AUPlugin::input_streams() const
 859 {
 860         if (input_channels < 0) {
 861                 warning << string_compose (_("AUPlugin: %1 input_streams() called without any format set!"), name()) << endmsg;
 862                 return 1;
 863         }
 864         return input_channels;
 865 }
 866
 867
 868 ChanCount
 869 AUPlugin::output_streams() const
 870 {
 871         if (output_channels < 0) {
 872                 warning << string_compose (_("AUPlugin: %1 output_streams() called without any format set!"), name()) << endmsg;
 873                 return 1;
 874         }
 875         return output_channels;
 876 }
 877
 878 OSStatus
 879 AUPlugin::render_callback(AudioUnitRenderActionFlags *ioActionFlags,
 880                           const AudioTimeStamp    *inTimeStamp,
 881                           UInt32       inBusNumber,
 882                           UInt32       inNumberFrames,
 883                           AudioBufferList*       ioData)
 884 {
 885         /* not much to do - the data is already in the buffers given to us in connect_and_run() */
 886
 887         if (current_maxbuf == 0) {
 888                 error << _("AUPlugin: render callback called illegally!") << endmsg;
 889                 return kAudioUnitErr_CannotDoInCurrentContext;
 890         }
 891
 892         for (uint32_t i = 0; i < current_maxbuf; ++i) {
 893                 ioData->mBuffers[i].mNumberChannels = 1;
 894                 ioData->mBuffers[i].mDataByteSize = sizeof (Sample) * inNumberFrames;
 895                 ioData->mBuffers[i].mData = (*current_buffers)[i] + cb_offset + current_offset;
 896         }
 897
 898         cb_offset += inNumberFrames;
 899
 900         return noErr;
 901 }
 902
 903 int
 904 AUPlugin::connect_and_run (vector<Sample*>& bufs, uint32_t maxbuf, int32_t& in, int32_t& out, nframes_t nframes, nframes_t offset)
 905 {
 906         AudioUnitRenderActionFlags flags = 0;
 907         AudioTimeStamp ts;
 908
 909         current_buffers = &bufs;
 910         current_maxbuf = maxbuf;
 911         current_offset = offset;
 912         cb_offset = 0;
 913
 914         buffers->mNumberBuffers = maxbuf;
 915
 916         for (uint32_t i = 0; i < maxbuf; ++i) {
 917                 buffers->mBuffers[i].mNumberChannels = 1;
 918                 buffers->mBuffers[i].mDataByteSize = nframes * sizeof (Sample);
 919                 buffers->mBuffers[i].mData = 0;
 920         }
 921
 922         ts.mSampleTime = frames_processed;
 923         ts.mFlags = kAudioTimeStampSampleTimeValid;
 924
 925         if (unit->Render (&flags, &ts, 0, nframes, buffers) == noErr) {
 926
 927                 current_maxbuf = 0;
 928                 frames_processed += nframes;
 929
 930                 for (uint32_t i = 0; i < maxbuf; ++i) {
 931                         if (bufs[i] + offset != buffers->mBuffers[i].mData) {
 932                                 memcpy (bufs[i]+offset, buffers->mBuffers[i].mData, nframes * sizeof (Sample));
 933                         }
 934                 }
 935                 return 0;
 936         }
 937
 938         return -1;
 939 }
 940
 941 set<uint32_t>
 942 AUPlugin::automatable() const
 943 {
 944         set<uint32_t> automates;
 945
 946         for (uint32_t i = 0; i < descriptors.size(); ++i) {
 947                 if (descriptors[i].automatable) {
 948                         automates.insert (i);
 949                 }
 950         }
 951
 952         return automates;
 953 }
 954
 955 string
 956 AUPlugin::describe_parameter (uint32_t param)
 957 {
 958         return descriptors[param].label;
 959 }
 960
 961 void
 962 AUPlugin::print_parameter (uint32_t param, char* buf, uint32_t len) const
 963 {
 964         // NameValue stuff here
 965 }
 966
 967 bool
 968 AUPlugin::parameter_is_audio (uint32_t) const
 969 {
 970         return false;
 971 }
 972
 973 bool
 974 AUPlugin::parameter_is_control (uint32_t) const
 975 {
 976         return true;
 977 }
 978
 979 bool
 980 AUPlugin::parameter_is_input (uint32_t) const
 981 {
 982         return false;
 983 }
 984
 985 bool
 986 AUPlugin::parameter_is_output (uint32_t) const
 987 {
 988         return false;
 989 }
 990
 991 XMLNode&
 992 AUPlugin::get_state()
 993 {
 994         LocaleGuard lg (X_("POSIX"));
 995         XMLNode *root = new XMLNode (state_node_name());
 996
 997 #ifdef AU_STATE_SUPPORT
 998         CFDataRef xmlData;
 999         CFPropertyListRef propertyList;
1000
1001         if (unit->GetAUPreset (propertyList) != noErr) {
1002                 return *root;
1003         }
1004
1005         // Convert the property list into XML data.
1006
1007         xmlData = CFPropertyListCreateXMLData( kCFAllocatorDefault, propertyList);
1008
1009         if (!xmlData) {
1010                 error << _("Could not create XML version of property list") << endmsg;
1011                 return *root;
1012         }
1013
1014         /* re-parse XML bytes to create a libxml++ XMLTree that we can merge into
1015            our state node. GACK!
1016         */
1017
1018         XMLTree t;
1019
1020         if (t.read_buffer (string ((const char*) CFDataGetBytePtr (xmlData), CFDataGetLength (xmlData)))) {
1021                 if (t.root()) {
1022                         root->add_child_copy (*t.root());
1023                 }
1024         }
1025
1026         CFRelease (xmlData);
1027         CFRelease (propertyList);
1028 #else
1029         if (!seen_get_state_message) {
1030                 info << string_compose (_("Saving AudioUnit settings is not supported in this build of %1. Consider paying for a newer version"), PROGRAM_NAME)
1031                      << endmsg;
1032                 seen_get_state_message = true;
1033         }
1034 #endif
1035
1036         return *root;
1037 }
1038
1039 int
1040 AUPlugin::set_state(const XMLNode& node)
1041 {
1042 #ifdef AU_STATE_SUPPORT
1043         int ret = -1;
1044         CFPropertyListRef propertyList;
1045         LocaleGuard lg (X_("POSIX"));
1046
1047         if (node.name() != state_node_name()) {
1048                 error << _("Bad node sent to AUPlugin::set_state") << endmsg;
1049                 return -1;
1050         }
1051
1052         if (node.children().empty()) {
1053                 return -1;
1054         }
1055
1056         XMLNode* top = node.children().front();
1057         XMLNode* copy = new XMLNode (*top);
1058
1059         XMLTree t;
1060         t.set_root (copy);
1061
1062         const string& xml = t.write_buffer ();
1063         CFDataRef xmlData = CFDataCreateWithBytesNoCopy (kCFAllocatorDefault, (UInt8*) xml.data(), xml.length(), kCFAllocatorNull);
1064         CFStringRef errorString;
1065
1066         propertyList = CFPropertyListCreateFromXMLData( kCFAllocatorDefault,
1067                                                         xmlData,
1068                                                         kCFPropertyListImmutable,
1069                                                         &errorString);
1070
1071         CFRelease (xmlData);
1072
1073         if (propertyList) {
1074                 if (unit->SetAUPreset (propertyList) == noErr) {
1075                         ret = 0;
1076                 }
1077                 CFRelease (propertyList);
1078         }
1079
1080         return ret;
1081 #else
1082         if (!seen_set_state_message) {
1083                 info << string_compose (_("Restoring AudioUnit settings is not supported in this build of %1. Consider paying for a newer version", PROGRAM_NAME)
1084                      << endmsg;
1085         }
1086         return 0;
1087 #endif
1088 }
1089
1090 bool
1091 AUPlugin::load_preset (const string& preset_label)
1092 {
1093 #ifdef AU_STATE_SUPPORT
1094         bool ret = false;
1095         CFPropertyListRef propertyList;
1096         Glib::ustring path;
1097         PresetMap::iterator x = preset_map.find (preset_label);
1098
1099         if (x == preset_map.end()) {
1100                 return false;
1101         }
1102
1103         if ((propertyList = load_property_list (x->second)) != 0) {
1104                 if (unit->SetAUPreset (propertyList) == noErr) {
1105                         ret = true;
1106                 }
1107                 CFRelease(propertyList);
1108         }
1109
1110         return ret;
1111 #else
1112         if (!seen_loading_message) {
1113                 info << string_compose (_("Loading AudioUnit presets is not supported in this build of %1. Consider paying for a newer version", PROGRAM_NAME)
1114                      << endmsg;
1115                 seen_loading_message = true;
1116         }
1117         return true;
1118 #endif
1119 }
1120
1121 bool
1122 AUPlugin::save_preset (string preset_name)
1123 {
1124 #ifdef AU_STATE_SUPPORT
1125         CFPropertyListRef propertyList;
1126         vector<Glib::ustring> v;
1127         Glib::ustring user_preset_path;
1128         bool ret = true;
1129
1130         std::string m = maker();
1131         std::string n = name();
1132
1133         strip_whitespace_edges (m);
1134         strip_whitespace_edges (n);
1135
1136         v.push_back (Glib::get_home_dir());
1137         v.push_back ("Library");
1138         v.push_back ("Audio");
1139         v.push_back ("Presets");
1140         v.push_back (m);
1141         v.push_back (n);
1142
1143         user_preset_path = Glib::build_filename (v);
1144
1145         if (g_mkdir_with_parents (user_preset_path.c_str(), 0775) < 0) {
1146                 error << string_compose (_("Cannot create user plugin presets folder (%1)"), user_preset_path) << endmsg;
1147                 return false;
1148         }
1149
1150         if (unit->GetAUPreset (propertyList) != noErr) {
1151                 return false;
1152         }
1153
1154         // add the actual preset name */
1155
1156         v.push_back (preset_name + preset_suffix);
1157
1158         // rebuild
1159
1160         user_preset_path = Glib::build_filename (v);
1161
1162         set_preset_name_in_plist (propertyList, preset_name);
1163
1164         if (save_property_list (propertyList, user_preset_path)) {
1165                 error << string_compose (_("Saving plugin state to %1 failed"), user_preset_path) << endmsg;
1166                 ret = false;
1167         }
1168
1169         CFRelease(propertyList);
1170
1171         return ret;
1172 #else
1173         if (!seen_saving_message) {
1174                 info << string_compose (_("Saving AudioUnit presets is not supported in this build of %1. Consider paying for a newer version"), PROGRAM_NAME)
1175                      << endmsg;
1176                 seen_saving_message = true;
1177         }
1178         return false;
1179 #endif
1180 }
1181
1182 //-----------------------------------------------------------------------------
1183 // this is just a little helper function used by GetAUComponentDescriptionFromPresetFile()
1184 static SInt32
1185 GetDictionarySInt32Value(CFDictionaryRef inAUStateDictionary, CFStringRef inDictionaryKey, Boolean * outSuccess)
1186 {
1187         CFNumberRef cfNumber;
1188         SInt32 numberValue = 0;
1189         Boolean dummySuccess;
1190
1191         if (outSuccess == NULL)
1192                 outSuccess = &dummySuccess;
1193         if ( (inAUStateDictionary == NULL) || (inDictionaryKey == NULL) )
1194         {
1195                 *outSuccess = FALSE;
1196                 return 0;
1197         }
1198
1199         cfNumber = (CFNumberRef) CFDictionaryGetValue(inAUStateDictionary, inDictionaryKey);
1200         if (cfNumber == NULL)
1201         {
1202                 *outSuccess = FALSE;
1203                 return 0;
1204         }
1205         *outSuccess = CFNumberGetValue(cfNumber, kCFNumberSInt32Type, &numberValue);
1206         if (*outSuccess)
1207                 return numberValue;
1208         else
1209                 return 0;
1210 }
1211
1212 static OSStatus
1213 GetAUComponentDescriptionFromStateData(CFPropertyListRef inAUStateData, ComponentDescription * outComponentDescription)
1214 {
1215         CFDictionaryRef auStateDictionary;
1216         ComponentDescription tempDesc = {0};
1217         SInt32 versionValue;
1218         Boolean gotValue;
1219
1220         if ( (inAUStateData == NULL) || (outComponentDescription == NULL) )
1221                 return paramErr;
1222
1223         // the property list for AU state data must be of the dictionary type
1224         if (CFGetTypeID(inAUStateData) != CFDictionaryGetTypeID()) {
1225                 return kAudioUnitErr_InvalidPropertyValue;
1226         }
1227
1228         auStateDictionary = (CFDictionaryRef)inAUStateData;
1229
1230         // first check to make sure that the version of the AU state data is one that we know understand
1231         // XXX should I really do this?  later versions would probably still hold these ID keys, right?
1232         versionValue = GetDictionarySInt32Value(auStateDictionary, CFSTR(kAUPresetVersionKey), &gotValue);
1233
1234         if (!gotValue) {
1235                 return kAudioUnitErr_InvalidPropertyValue;
1236         }
1237 #define kCurrentSavedStateVersion 0
1238         if (versionValue != kCurrentSavedStateVersion) {
1239                 return kAudioUnitErr_InvalidPropertyValue;
1240         }
1241
1242         // grab the ComponentDescription values from the AU state data
1243         tempDesc.componentType = (OSType) GetDictionarySInt32Value(auStateDictionary, CFSTR(kAUPresetTypeKey), NULL);
1244         tempDesc.componentSubType = (OSType) GetDictionarySInt32Value(auStateDictionary, CFSTR(kAUPresetSubtypeKey), NULL);
1245         tempDesc.componentManufacturer = (OSType) GetDictionarySInt32Value(auStateDictionary, CFSTR(kAUPresetManufacturerKey), NULL);
1246         // zero values are illegit for specific ComponentDescriptions, so zero for any value means that there was an error
1247         if ( (tempDesc.componentType == 0) || (tempDesc.componentSubType == 0) || (tempDesc.componentManufacturer == 0) )
1248                 return kAudioUnitErr_InvalidPropertyValue;
1249
1250         *outComponentDescription = tempDesc;
1251         return noErr;
1252 }
1253
1254
1255 static bool au_preset_filter (const string& str, void* arg)
1256 {
1257         /* Not a dotfile, has a prefix before a period, suffix is aupreset */
1258
1259         bool ret;
1260
1261         ret = (str[0] != '.' && str.length() > 9 && str.find (preset_suffix) == (str.length() - preset_suffix.length()));
1262
1263         if (ret && arg) {
1264
1265                 /* check the preset file path name against this plugin
1266                    ID. The idea is that all preset files for this plugin
1267                    include "<manufacturer>/<plugin-name>" in their path.
1268                 */
1269
1270                 Plugin* p = (Plugin *) arg;
1271                 string match = p->maker();
1272                 match += '/';
1273                 match += p->name();
1274
1275                 ret = str.find (match) != string::npos;
1276
1277                 if (ret == false) {
1278                         string m = p->maker ();
1279                         string n = p->name ();
1280                         strip_whitespace_edges (m);
1281                         strip_whitespace_edges (n);
1282                         match = m;
1283                         match += '/';
1284                         match += n;
1285
1286                         ret = str.find (match) != string::npos;
1287                 }
1288         }
1289
1290         return ret;
1291 }
1292
1293 bool
1294 check_and_get_preset_name (Component component, const string& pathstr, string& preset_name)
1295 {
1296         OSStatus status;
1297         CFPropertyListRef plist;
1298         ComponentDescription presetDesc;
1299         bool ret = false;
1300
1301         plist = load_property_list (pathstr);
1302
1303         if (!plist) {
1304                 return ret;
1305         }
1306
1307         // get the ComponentDescription from the AU preset file
1308
1309         status = GetAUComponentDescriptionFromStateData(plist, &presetDesc);
1310
1311         if (status == noErr) {
1312                 if (ComponentAndDescriptionMatch_Loosely(component, &presetDesc)) {
1313
1314                         /* try to get the preset name from the property list */
1315
1316                         if (CFGetTypeID(plist) == CFDictionaryGetTypeID()) {
1317
1318                                 const void* psk = CFDictionaryGetValue ((CFMutableDictionaryRef)plist, CFSTR(kAUPresetNameKey));
1319
1320                                 if (psk) {
1321
1322                                         const char* p = CFStringGetCStringPtr ((CFStringRef) psk, kCFStringEncodingUTF8);
1323
1324                                         if (!p) {
1325                                                 char buf[PATH_MAX+1];
1326
1327                                                 if (CFStringGetCString ((CFStringRef)psk, buf, sizeof (buf), kCFStringEncodingUTF8)) {
1328                                                         preset_name = buf;
1329                                                 }
1330                                         }
1331                                 }
1332                         }
1333                 }
1334         }
1335
1336         CFRelease (plist);
1337
1338         return true;
1339 }
1340
1341 std::string
1342 AUPlugin::current_preset() const
1343 {
1344         string preset_name;
1345
1346 #ifdef AU_STATE_SUPPORT
1347         CFPropertyListRef propertyList;
1348
1349         if (unit->GetAUPreset (propertyList) == noErr) {
1350                 preset_name = get_preset_name_in_plist (propertyList);
1351                 CFRelease(propertyList);
1352         }
1353 #endif
1354         return preset_name;
1355 }
1356
1357 vector<string>
1358 AUPlugin::get_presets ()
1359 {
1360         vector<string*>* preset_files;
1361         vector<string> presets;
1362         PathScanner scanner;
1363
1364         preset_files = scanner (preset_search_path, au_preset_filter, this, true, true, -1, true);
1365
1366         if (!preset_files) {
1367                 return presets;
1368         }
1369
1370         for (vector<string*>::iterator x = preset_files->begin(); x != preset_files->end(); ++x) {
1371
1372                 string path = *(*x);
1373                 string preset_name;
1374
1375                 /* make an initial guess at the preset name using the path */
1376
1377                 preset_name = Glib::path_get_basename (path);
1378                 preset_name = preset_name.substr (0, preset_name.find_last_of ('.'));
1379
1380                 /* check that this preset file really matches this plugin
1381                    and potentially get the "real" preset name from
1382                    within the file.
1383                 */
1384
1385                 if (check_and_get_preset_name (get_comp()->Comp(), path, preset_name)) {
1386                         presets.push_back (preset_name);
1387                         preset_map[preset_name] = path;
1388                 }
1389
1390                 delete *x;
1391         }
1392
1393         delete preset_files;
1394
1395         return presets;
1396 }
1397
1398 bool
1399 AUPlugin::has_editor () const
1400 {
1401         // even if the plugin doesn't have its own editor, the AU API can be used
1402         // to create one that looks native.
1403         return true;
1404 }
1405
1406 AUPluginInfo::AUPluginInfo (boost::shared_ptr<CAComponentDescription> d)
1407         : descriptor (d)
1408 {
1409
1410 }
1411
1412 AUPluginInfo::~AUPluginInfo ()
1413 {
1414 }
1415
1416 PluginPtr
1417 AUPluginInfo::load (Session& session)
1418 {
1419         try {
1420                 PluginPtr plugin;
1421
1422                 boost::shared_ptr<CAComponent> comp (new CAComponent(*descriptor));
1423
1424                 if (!comp->IsValid()) {
1425                         error << ("AudioUnit: not a valid Component") << endmsg;
1426                 } else {
1427                         plugin.reset (new AUPlugin (session.engine(), session, comp));
1428                 }
1429
1430                 plugin->set_info (PluginInfoPtr (new AUPluginInfo (*this)));
1431                 return plugin;
1432         }
1433
1434         catch (failed_constructor &err) {
1435                 return PluginPtr ();
1436         }
1437 }
1438
1439 Glib::ustring
1440 AUPluginInfo::au_cache_path ()
1441 {
1442         return Glib::build_filename (ARDOUR::get_user_ardour_path(), "au_cache");
1443 }
1444
1445 PluginInfoList*
1446 AUPluginInfo::discover ()
1447 {
1448         XMLTree tree;
1449
1450         if (!Glib::file_test (au_cache_path(), Glib::FILE_TEST_EXISTS)) {
1451                 ARDOUR::BootMessage (_("Discovering AudioUnit plugins (could take some time ...)"));
1452         }
1453
1454         PluginInfoList* plugs = new PluginInfoList ();
1455
1456         discover_fx (plugs);
1457         discover_music (plugs);
1458         discover_generators (plugs);
1459
1460         return plugs;
1461 }
1462
1463 void
1464 AUPluginInfo::discover_music (PluginInfoList& plugs)
1465 {
1466         CAComponentDescription desc;
1467         desc.componentFlags = 0;
1468         desc.componentFlagsMask = 0;
1469         desc.componentSubType = 0;
1470         desc.componentManufacturer = 0;
1471         desc.componentType = kAudioUnitType_MusicEffect;
1472
1473         discover_by_description (plugs, desc);
1474 }
1475
1476 void
1477 AUPluginInfo::discover_fx (PluginInfoList& plugs)
1478 {
1479         CAComponentDescription desc;
1480         desc.componentFlags = 0;
1481         desc.componentFlagsMask = 0;
1482         desc.componentSubType = 0;
1483         desc.componentManufacturer = 0;
1484         desc.componentType = kAudioUnitType_Effect;
1485
1486         discover_by_description (plugs, desc);
1487 }
1488
1489 void
1490 AUPluginInfo::discover_generators (PluginInfoList& plugs)
1491 {
1492         CAComponentDescription desc;
1493         desc.componentFlags = 0;
1494         desc.componentFlagsMask = 0;
1495         desc.componentSubType = 0;
1496         desc.componentManufacturer = 0;
1497         desc.componentType = kAudioUnitType_Generator;
1498
1499         discover_by_description (plugs, desc);
1500 }
1501
1502 void
1503 AUPluginInfo::discover_by_description (PluginInfoList& plugs, CAComponentDescription& desc)
1504 {
1505         Component comp = 0;
1506
1507         comp = FindNextComponent (NULL, &desc);
1508
1509         while (comp != NULL) {
1510                 CAComponentDescription temp;
1511                 GetComponentInfo (comp, &temp, NULL, NULL, NULL);
1512
1513                 AUPluginInfoPtr info (new AUPluginInfo
1514                                       (boost::shared_ptr<CAComponentDescription> (new CAComponentDescription(temp))));
1515
1516                 /* no panners, format converters or i/o AU's for our purposes
1517                  */
1518
1519                 switch (info->descriptor->Type()) {
1520                 case kAudioUnitType_Panner:
1521                 case kAudioUnitType_OfflineEffect:
1522                 case kAudioUnitType_FormatConverter:
1523                         continue;
1524                 case kAudioUnitType_Output:
1525                 case kAudioUnitType_MusicDevice:
1526                 case kAudioUnitType_MusicEffect:
1527                 case kAudioUnitType_Effect:
1528                 case kAudioUnitType_Mixer:
1529                 case kAudioUnitType_Generator:
1530                         break;
1531                 default:
1532                         break;
1533                 }
1534
1535                 switch (info->descriptor->SubType()) {
1536                 case kAudioUnitSubType_DefaultOutput:
1537                 case kAudioUnitSubType_SystemOutput:
1538                 case kAudioUnitSubType_GenericOutput:
1539                 case kAudioUnitSubType_AUConverter:
1540                         /* we don't want output units here */
1541                         continue;
1542                         break;
1543
1544                 case kAudioUnitSubType_DLSSynth:
1545                         info->category = "DLS Synth";
1546                         break;
1547
1548                 case kAudioUnitSubType_Varispeed:
1549                         info->category = "Varispeed";
1550                         break;
1551
1552                 case kAudioUnitSubType_Delay:
1553                         info->category = "Delay";
1554                         break;
1555
1556                 case kAudioUnitSubType_LowPassFilter:
1557                         info->category = "Low-pass Filter";
1558                         break;
1559
1560                 case kAudioUnitSubType_HighPassFilter:
1561                         info->category = "High-pass Filter";
1562                         break;
1563
1564                 case kAudioUnitSubType_BandPassFilter:
1565                         info->category = "Band-pass Filter";
1566                         break;
1567
1568                 case kAudioUnitSubType_HighShelfFilter:
1569                         info->category = "High-shelf Filter";
1570                         break;
1571
1572                 case kAudioUnitSubType_LowShelfFilter:
1573                         info->category = "Low-shelf Filter";
1574                         break;
1575
1576                 case kAudioUnitSubType_ParametricEQ:
1577                         info->category = "Parametric EQ";
1578                         break;
1579
1580                 case kAudioUnitSubType_GraphicEQ:
1581                         info->category = "Graphic EQ";
1582                         break;
1583
1584                 case kAudioUnitSubType_PeakLimiter:
1585                         info->category = "Peak Limiter";
1586                         break;
1587
1588                 case kAudioUnitSubType_DynamicsProcessor:
1589                         info->category = "Dynamics Processor";
1590                         break;
1591
1592                 case kAudioUnitSubType_MultiBandCompressor:
1593                         info->category = "Multiband Compressor";
1594                         break;
1595
1596                 case kAudioUnitSubType_MatrixReverb:
1597                         info->category = "Matrix Reverb";
1598                         break;
1599
1600                 case kAudioUnitSubType_SampleDelay:
1601                         info->category = "Sample Delay";
1602                         break;
1603
1604                 case kAudioUnitSubType_Pitch:
1605                         info->category = "Pitch";
1606                         break;
1607
1608                 case kAudioUnitSubType_NetSend:
1609                         info->category = "Net Sender";
1610                         break;
1611
1612                 case kAudioUnitSubType_3DMixer:
1613                         info->category = "3DMixer";
1614                         break;
1615
1616                 case kAudioUnitSubType_MatrixMixer:
1617                         info->category = "MatrixMixer";
1618                         break;
1619
1620                 case kAudioUnitSubType_ScheduledSoundPlayer:
1621                         info->category = "Scheduled Sound Player";
1622                         break;
1623
1624
1625                 case kAudioUnitSubType_AudioFilePlayer:
1626                         info->category = "Audio File Player";
1627                         break;
1628
1629                 case kAudioUnitSubType_NetReceive:
1630                         info->category = "Net Receiver";
1631                         break;
1632
1633                 default:
1634                         info->category = "";
1635                 }
1636
1637                 AUPluginInfo::get_names (temp, info->name, info->creator);
1638
1639                 info->type = ARDOUR::AudioUnit;
1640                 info->unique_id = stringify_descriptor (*info->descriptor);
1641
1642                 /* XXX not sure of the best way to handle plugin versioning yet
1643                  */
1644
1645                 CAComponent cacomp (*info->descriptor);
1646
1647                 if (cacomp.GetResourceVersion (info->version) != noErr) {
1648                         info->version = 0;
1649                 }
1650
1651                 if (cached_io_configuration (info->unique_id, info->version, cacomp, info->cache, info->name)) {
1652
1653                         /* here we have to map apple's wildcard system to a simple pair
1654                            of values. in ::can_do() we use the whole system, but here
1655                            we need a single pair of values. XXX probably means we should
1656                            remove any use of these values.
1657                         */
1658
1659                         info->n_inputs = info->cache.io_configs.front().first;
1660                         info->n_outputs = info->cache.io_configs.front().second;
1661
1662                         if (info->cache.io_configs.size() > 1) {
1663                                 cerr << "ODD: variable IO config for " << info->unique_id << endl;
1664                         }
1665
1666                         plugs.push_back (info);
1667
1668                 } else {
1669                         error << string_compose (_("Cannot get I/O configuration info for AU %1"), info->name) << endmsg;
1670                 }
1671
1672                 comp = FindNextComponent (comp, &desc);
1673         }
1674 }
1675
1676 bool
1677 AUPluginInfo::cached_io_configuration (const std::string& unique_id,
1678                                        UInt32 version,
1679                                        CAComponent& comp,
1680                                        AUPluginCachedInfo& cinfo,
1681                                        const std::string& name)
1682 {
1683         std::string id;
1684         char buf[32];
1685
1686         /* concatenate unique ID with version to provide a key for cached info lookup.
1687            this ensures we don't get stale information, or should if plugin developers
1688            follow Apple "guidelines".
1689          */
1690
1691         snprintf (buf, sizeof (buf), "%u", version);
1692         id = unique_id;
1693         id += '/';
1694         id += buf;
1695
1696         CachedInfoMap::iterator cim = cached_info.find (id);
1697
1698         if (cim != cached_info.end()) {
1699                 cinfo = cim->second;
1700                 return true;
1701         }
1702
1703         CAAudioUnit unit;
1704         AUChannelInfo* channel_info;
1705         UInt32 cnt;
1706         int ret;
1707
1708         ARDOUR::BootMessage (string_compose (_("Checking AudioUnit: %1"), name));
1709
1710         try {
1711
1712                 if (CAAudioUnit::Open (comp, unit) != noErr) {
1713                         return false;
1714                 }
1715
1716         } catch (...) {
1717
1718                 warning << string_compose (_("Could not load AU plugin %1 - ignored"), name) << endmsg;
1719                 cerr << string_compose (_("Could not load AU plugin %1 - ignored"), name) << endl;
1720                 return false;
1721
1722         }
1723
1724         if ((ret = unit.GetChannelInfo (&channel_info, cnt)) < 0) {
1725                 return false;
1726         }
1727
1728         if (ret > 0) {
1729                 /* no explicit info available */
1730
1731                 cinfo.io_configs.push_back (pair<int,int> (-1, -1));
1732
1733         } else {
1734
1735                 /* store each configuration */
1736
1737                 for (uint32_t n = 0; n < cnt; ++n) {
1738                         cinfo.io_configs.push_back (pair<int,int> (channel_info[n].inChannels,
1739                                                                    channel_info[n].outChannels));
1740                 }
1741
1742                 free (channel_info);
1743         }
1744
1745         add_cached_info (id, cinfo);
1746         save_cached_info ();
1747
1748         return true;
1749 }
1750
1751 void
1752 AUPluginInfo::add_cached_info (const std::string& id, AUPluginCachedInfo& cinfo)
1753 {
1754         cached_info[id] = cinfo;
1755 }
1756
1757 void
1758 AUPluginInfo::save_cached_info ()
1759 {
1760         XMLNode* node;
1761
1762         node = new XMLNode (X_("AudioUnitPluginCache"));
1763
1764         for (map<string,AUPluginCachedInfo>::iterator i = cached_info.begin(); i != cached_info.end(); ++i) {
1765                 XMLNode* parent = new XMLNode (X_("plugin"));
1766                 parent->add_property ("id", i->first);
1767                 node->add_child_nocopy (*parent);
1768
1769                 for (vector<pair<int, int> >::iterator j = i->second.io_configs.begin(); j != i->second.io_configs.end(); ++j) {
1770
1771                         XMLNode* child = new XMLNode (X_("io"));
1772                         char buf[32];
1773
1774                         snprintf (buf, sizeof (buf), "%d", j->first);
1775                         child->add_property (X_("in"), buf);
1776                         snprintf (buf, sizeof (buf), "%d", j->second);
1777                         child->add_property (X_("out"), buf);
1778                         parent->add_child_nocopy (*child);
1779                 }
1780
1781         }
1782
1783         Glib::ustring path = au_cache_path ();
1784         XMLTree tree;
1785
1786         tree.set_root (node);
1787
1788         if (!tree.write (path)) {
1789                 error << string_compose (_("could not save AU cache to %1"), path) << endmsg;
1790                 unlink (path.c_str());
1791         }
1792 }
1793
1794 int
1795 AUPluginInfo::load_cached_info ()
1796 {
1797         Glib::ustring path = au_cache_path ();
1798         XMLTree tree;
1799
1800         if (!Glib::file_test (path, Glib::FILE_TEST_EXISTS)) {
1801                 return 0;
1802         }
1803
1804         tree.read (path);
1805         const XMLNode* root (tree.root());
1806
1807         if (root->name() != X_("AudioUnitPluginCache")) {
1808                 return -1;
1809         }
1810
1811         cached_info.clear ();
1812
1813         const XMLNodeList children = root->children();
1814
1815         for (XMLNodeConstIterator iter = children.begin(); iter != children.end(); ++iter) {
1816
1817                 const XMLNode* child = *iter;
1818
1819                 if (child->name() == X_("plugin")) {
1820
1821                         const XMLNode* gchild;
1822                         const XMLNodeList gchildren = child->children();
1823                         const XMLProperty* prop = child->property (X_("id"));
1824
1825                         if (!prop) {
1826                                 continue;
1827                         }
1828
1829                         std::string id = prop->value();
1830                         AUPluginCachedInfo cinfo;
1831
1832                         for (XMLNodeConstIterator giter = gchildren.begin(); giter != gchildren.end(); giter++) {
1833
1834                                 gchild = *giter;
1835
1836                                 if (gchild->name() == X_("io")) {
1837
1838                                         const XMLProperty* iprop;
1839                                         const XMLProperty* oprop;
1840
1841                                         if (((iprop = gchild->property (X_("in"))) != 0) &&
1842                                             ((oprop = gchild->property (X_("out"))) != 0)) {
1843                                                 const int in = atoi (iprop->value());
1844                                                 const int out = atoi (iprop->value());
1845
1846                                                 cinfo.io_configs.push_back (pair<int,int> (in, out));
1847                                         }
1848                                 }
1849                         }
1850
1851                         if (cinfo.io_configs.size()) {
1852                                 add_cached_info (id, cinfo);
1853                         }
1854                 }
1855         }
1856
1857         return 0;
1858 }
1859
1860 void
1861 AUPluginInfo::get_names (CAComponentDescription& comp_desc, std::string& name, Glib::ustring& maker)
1862 {
1863         CFStringRef itemName = NULL;
1864
1865         // Marc Poirier-style item name
1866         CAComponent auComponent (comp_desc);
1867         if (auComponent.IsValid()) {
1868                 CAComponentDescription dummydesc;
1869                 Handle nameHandle = NewHandle(sizeof(void*));
1870                 if (nameHandle != NULL) {
1871                         OSErr err = GetComponentInfo(auComponent.Comp(), &dummydesc, nameHandle, NULL, NULL);
1872                         if (err == noErr) {
1873                                 ConstStr255Param nameString = (ConstStr255Param) (*nameHandle);
1874                                 if (nameString != NULL) {
1875                                         itemName = CFStringCreateWithPascalString(kCFAllocatorDefault, nameString, CFStringGetSystemEncoding());
1876                                 }
1877                         }
1878                         DisposeHandle(nameHandle);
1879                 }
1880         }
1881
1882         // if Marc-style fails, do the original way
1883         if (itemName == NULL) {
1884                 CFStringRef compTypeString = UTCreateStringForOSType(comp_desc.componentType);
1885                 CFStringRef compSubTypeString = UTCreateStringForOSType(comp_desc.componentSubType);
1886                 CFStringRef compManufacturerString = UTCreateStringForOSType(comp_desc.componentManufacturer);
1887
1888                 itemName = CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%@ - %@ - %@"),
1889                         compTypeString, compManufacturerString, compSubTypeString);
1890
1891                 if (compTypeString != NULL)
1892                         CFRelease(compTypeString);
1893                 if (compSubTypeString != NULL)
1894                         CFRelease(compSubTypeString);
1895                 if (compManufacturerString != NULL)
1896                         CFRelease(compManufacturerString);
1897         }
1898
1899         string str = CFStringRefToStdString(itemName);
1900         string::size_type colon = str.find (':');
1901
1902         if (colon) {
1903                 name = str.substr (colon+1);
1904                 maker = str.substr (0, colon);
1905                 // strip_whitespace_edges (maker);
1906                 // strip_whitespace_edges (name);
1907         } else {
1908                 name = str;
1909                 maker = "unknown";
1910         }
1911 }
1912
1913 // from CAComponentDescription.cpp (in libs/appleutility in ardour source)
1914 extern char *StringForOSType (OSType t, char *writeLocation);
1915
1916 std::string
1917 AUPluginInfo::stringify_descriptor (const CAComponentDescription& desc)
1918 {
1919         char str[24];
1920         stringstream s;
1921
1922         s << StringForOSType (desc.Type(), str);
1923         s << " - ";
1924
1925         s << StringForOSType (desc.SubType(), str);
1926         s << " - ";
1927
1928         s << StringForOSType (desc.Manu(), str);
1929
1930         return s.str();
1931 }