fst/audiomaster.c

   1 /*
   2     Copyright (C) 2002 Kjetil S. Matheussen / Notam.
   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 <stdbool.h>
  21 #include <stdio.h>
  22
  23 #include "jackvst.h"
  24 #include <vestige/aeffectx.h>
  25 #include <math.h>
  26
  27 /* The following audioMaster opcode handlings are copied
  28  * (with a light modification) from the vst tilde source
  29  * made by Mark Williamson.
  30 */
  31
  32 //#define DEBUG_CALLBACKS
  33
  34 #ifdef DEBUG_CALLBACKS
  35 #define SHOW_CALLBACK fst_error
  36 #else
  37 #define SHOW_CALLBACK(...)
  38 #endif
  39
  40 extern void queue_midi_message(JackVST* jvst, int status, int d1, int d2, jack_nframes_t delta );
  41
  42 long jack_host_callback (struct AEffect* effect,
  43                          long opcode,
  44                          long index,
  45                          long value,
  46                          void* ptr,
  47                          float opt)
  48 {
  49         static struct VstTimeInfo _timeInfo;
  50         JackVST* jackvst = effect ? ((JackVST*) effect->user) : NULL;
  51         jack_position_t jack_pos;
  52         jack_transport_state_t tstate;
  53
  54         //SHOW_CALLBACK ("am callback, opcode = %d", opcode);
  55
  56         switch(opcode){
  57
  58         case audioMasterAutomate:
  59                 SHOW_CALLBACK ("amc: audioMasterAutomate\n");
  60                 // index, value, returns 0
  61                 //effect->setParameter (effect, index, opt);
  62                 if( jackvst && jackvst->midi_learn ) {
  63                         jackvst->midi_learn_PARAM = index;
  64                 }
  65                 return 0;
  66
  67         case audioMasterVersion:
  68                 SHOW_CALLBACK ("amc: audioMasterVersion\n");
  69                 // vst version, currently 2 (0 for older)
  70                 return 2;
  71
  72         case audioMasterCurrentId:
  73                 SHOW_CALLBACK ("amc: audioMasterCurrentId\n");
  74                 // returns the unique id of a plug that's currently
  75                 // loading
  76                 return 0;
  77
  78         case audioMasterIdle:
  79                 SHOW_CALLBACK ("amc: audioMasterIdle\n");
  80                 // call application idle routine (this will
  81                 // call effEditIdle for all open editors too)
  82                 effect->dispatcher(effect, effEditIdle, 0, 0, NULL, 0.0f);
  83                 return 0;
  84
  85         case audioMasterPinConnected:
  86                 SHOW_CALLBACK ("amc: audioMasterPinConnected\n");
  87                 // inquire if an input or output is beeing connected;
  88                 // index enumerates input or output counting from zero:
  89                 // value is 0 for input and != 0 otherwise. note: the
  90                 // return value is 0 for <true> such that older versions
  91                 // will always return true.
  92                 return 0;
  93
  94         case audioMasterWantMidi:
  95                 SHOW_CALLBACK ("amc: audioMasterWantMidi\n");
  96                 // <value> is a filter which is currently ignored
  97                 return 0;
  98
  99         case audioMasterGetTime:
 100                 //SHOW_CALLBACK ("amc: audioMasterGetTime\n");
 101                 // returns const VstTimeInfo* (or 0 if not supported)
 102                 // <value> should contain a mask indicating which fields are required
 103                 // (see valid masks above), as some items may require extensive
 104                 // conversions
 105
 106                 //return 0;
 107
 108                 memset(&_timeInfo, 0, sizeof(_timeInfo));
 109                 if (jackvst) {
 110                         tstate = jack_transport_query (jackvst->client, &jack_pos);
 111
 112                         _timeInfo.samplePos = jack_pos.frame;
 113                         _timeInfo.sampleRate = jack_pos.frame_rate;
 114                         _timeInfo.flags = 0;
 115
 116                         //printf( "get time value=%d\n", value );
 117                         if (jack_pos.valid & JackPositionBBT) {
 118                                 _timeInfo.tempo = jack_pos.beats_per_minute;
 119                                 _timeInfo.flags |= (kVstTempoValid);
 120                         }
 121                         if (jack_pos.valid & JackPositionBBT) {
 122                                 _timeInfo.timeSigNumerator = (long) floor (jack_pos.beats_per_bar);
 123                                 _timeInfo.timeSigDenominator = (long) floor (jack_pos.beat_type);
 124                                 _timeInfo.flags |= (kVstBarsValid);
 125                         }
 126
 127                         if (tstate == JackTransportRolling) {
 128                                 _timeInfo.flags |= (kVstTransportChanged|kVstTransportPlaying);
 129                         } else {
 130                                 _timeInfo.flags |= (kVstTransportChanged);
 131                         }
 132
 133                 } else {
 134                         _timeInfo.samplePos = 0;
 135                         _timeInfo.sampleRate = 48000;
 136                 }
 137
 138                 return (long)&_timeInfo;
 139
 140         case audioMasterProcessEvents:
 141                 SHOW_CALLBACK ("amc: audioMasterProcessEvents\n");
 142                 // VstEvents* in <ptr>
 143                 if (jackvst) {
 144                         int i;
 145                         long numEvents;
 146                         VstEvents* events = (VstEvents*)ptr;
 147
 148                         numEvents = events->numEvents;
 149                         for (i = 0; i < numEvents; i++) {
 150                                 char* midiData;
 151                                 VstMidiEvent* event = (VstMidiEvent*)events->events[i];
 152                                 //printf( "delta = %d\n", (int) event->deltaFrames );
 153                                 midiData = event->midiData;
 154                                 queue_midi_message(jackvst, midiData[0], midiData[1], midiData[2], event->deltaFrames);
 155                         }
 156                 }
 157                 return 1;
 158
 159         case audioMasterSetTime:
 160                 SHOW_CALLBACK ("amc: audioMasterSetTime\n");
 161                 // VstTimenfo* in <ptr>, filter in <value>, not supported
 162                 return 0;
 163
 164         case audioMasterTempoAt:
 165                 SHOW_CALLBACK ("amc: audioMasterTempoAt\n");
 166                 memset(&_timeInfo, 0, sizeof(_timeInfo));
 167                 if (jackvst) {
 168                         tstate = jack_transport_query (jackvst->client, &jack_pos);
 169                         return jack_pos.beats_per_minute * 10000.0;
 170                 }
 171                 // returns tempo (in bpm * 10000) at sample frame location passed in <value>
 172                 return 0;
 173
 174         case audioMasterGetNumAutomatableParameters:
 175                 SHOW_CALLBACK ("amc: audioMasterGetNumAutomatableParameters\n");
 176                 return 0;
 177
 178         case audioMasterGetParameterQuantization:
 179                 SHOW_CALLBACK ("amc: audioMasterGetParameterQuantization\n");
 180                 // returns the integer value for +1.0 representation,
 181                 // or 1 if full single float precision is maintained
 182                 // in automation. parameter index in <value> (-1: all, any)
 183                 return 0;
 184
 185         case audioMasterIOChanged:
 186                 SHOW_CALLBACK ("amc: audioMasterIOChanged\n");
 187                 // numInputs and/or numOutputs has changed
 188                 return 0;
 189
 190         case audioMasterNeedIdle:
 191                 SHOW_CALLBACK ("amc: audioMasterNeedIdle\n");
 192                 // plug needs idle calls (outside its editor window)
 193                 if( jackvst )
 194                     jackvst->fst->wantIdle = 1;
 195                 return 1;
 196
 197         case audioMasterSizeWindow:
 198                 SHOW_CALLBACK ("amc: audioMasterSizeWindow\n");
 199                 // index: width, value: height
 200                 return 0;
 201
 202         case audioMasterGetSampleRate:
 203                 SHOW_CALLBACK ("amc: audioMasterGetSampleRate\n");
 204                 if( jackvst )
 205                     return jack_get_sample_rate( jackvst->client );
 206
 207                 return 44100;
 208
 209         case audioMasterGetBlockSize:
 210                 SHOW_CALLBACK ("amc: audioMasterGetBlockSize\n");
 211                 if( jackvst )
 212                     return jack_get_buffer_size( jackvst->client );
 213
 214                 return 1024;
 215
 216         case audioMasterGetInputLatency:
 217                 SHOW_CALLBACK ("amc: audioMasterGetInputLatency\n");
 218                 return 0;
 219
 220         case audioMasterGetOutputLatency:
 221                 SHOW_CALLBACK ("amc: audioMasterGetOutputLatency\n");
 222                 return 0;
 223
 224         case audioMasterGetPreviousPlug:
 225                 SHOW_CALLBACK ("amc: audioMasterGetPreviousPlug\n");
 226                // input pin in <value> (-1: first to come), returns cEffect*
 227                 return 0;
 228
 229         case audioMasterGetNextPlug:
 230                 SHOW_CALLBACK ("amc: audioMasterGetNextPlug\n");
 231                // output pin in <value> (-1: first to come), returns cEffect*
 232
 233         case audioMasterWillReplaceOrAccumulate:
 234                 SHOW_CALLBACK ("amc: audioMasterWillReplaceOrAccumulate\n");
 235                // returns: 0: not supported, 1: replace, 2: accumulate
 236                 return 0;
 237
 238         case audioMasterGetCurrentProcessLevel:
 239                 SHOW_CALLBACK ("amc: audioMasterGetCurrentProcessLevel\n");
 240                 // returns: 0: not supported,
 241                 // 1: currently in user thread (gui)
 242                 // 2: currently in audio thread (where process is called)
 243                 // 3: currently in 'sequencer' thread (midi, timer etc)
 244                 // 4: currently offline processing and thus in user thread
 245                 // other: not defined, but probably pre-empting user thread.
 246                 return 0;
 247
 248         case audioMasterGetAutomationState:
 249                 SHOW_CALLBACK ("amc: audioMasterGetAutomationState\n");
 250                 // returns 0: not supported, 1: off, 2:read, 3:write, 4:read/write
 251                 // offline
 252                 return 0;
 253
 254         case audioMasterOfflineStart:
 255                 SHOW_CALLBACK ("amc: audioMasterOfflineStart\n");
 256         case audioMasterOfflineRead:
 257                 SHOW_CALLBACK ("amc: audioMasterOfflineRead\n");
 258                 // ptr points to offline structure, see below. return 0: error, 1 ok
 259                 return 0;
 260
 261         case audioMasterOfflineWrite:
 262                 SHOW_CALLBACK ("amc: audioMasterOfflineWrite\n");
 263                 // same as read
 264                 return 0;
 265
 266         case audioMasterOfflineGetCurrentPass:
 267                 SHOW_CALLBACK ("amc: audioMasterOfflineGetCurrentPass\n");
 268         case audioMasterOfflineGetCurrentMetaPass:
 269                 SHOW_CALLBACK ("amc: audioMasterOfflineGetCurrentMetaPass\n");
 270                 return 0;
 271
 272         case audioMasterSetOutputSampleRate:
 273                 SHOW_CALLBACK ("amc: audioMasterSetOutputSampleRate\n");
 274                 // for variable i/o, sample rate in <opt>
 275                 return 0;
 276
 277         case audioMasterGetSpeakerArrangement:
 278                 SHOW_CALLBACK ("amc: audioMasterGetSpeakerArrangement\n");
 279                 // (long)input in <value>, output in <ptr>
 280                 return 0;
 281
 282         case audioMasterGetVendorString:
 283                 SHOW_CALLBACK ("amc: audioMasterGetVendorString\n");
 284                 // fills <ptr> with a string identifying the vendor (max 64 char)
 285                 strcpy ((char*) ptr, "LAD");
 286                 return 0;
 287
 288         case audioMasterGetProductString:
 289                 SHOW_CALLBACK ("amc: audioMasterGetProductString\n");
 290                 // fills <ptr> with a string with product name (max 64 char)
 291                 strcpy ((char*) ptr, "FreeST");
 292                 return 0;
 293
 294         case audioMasterGetVendorVersion:
 295                 SHOW_CALLBACK ("amc: audioMasterGetVendorVersion\n");
 296                 // returns vendor-specific version
 297                 return 1000;
 298
 299         case audioMasterVendorSpecific:
 300                 SHOW_CALLBACK ("amc: audioMasterVendorSpecific\n");
 301                 // no definition, vendor specific handling
 302                 return 0;
 303
 304         case audioMasterSetIcon:
 305                 SHOW_CALLBACK ("amc: audioMasterSetIcon\n");
 306                 // void* in <ptr>, format not defined yet
 307                 return 0;
 308
 309         case audioMasterCanDo:
 310                 SHOW_CALLBACK ("amc: audioMasterCanDo\n");
 311                 // string in ptr, see below
 312                 return 0;
 313
 314         case audioMasterGetLanguage:
 315                 SHOW_CALLBACK ("amc: audioMasterGetLanguage\n");
 316                 // see enum
 317                 return 0;
 318
 319         case audioMasterOpenWindow:
 320                 SHOW_CALLBACK ("amc: audioMasterOpenWindow\n");
 321                 // returns platform specific ptr
 322                 return 0;
 323
 324         case audioMasterCloseWindow:
 325                 SHOW_CALLBACK ("amc: audioMasterCloseWindow\n");
 326                 // close window, platform specific handle in <ptr>
 327                 return 0;
 328
 329         case audioMasterGetDirectory:
 330                 SHOW_CALLBACK ("amc: audioMasterGetDirectory\n");
 331                 // get plug directory, FSSpec on MAC, else char*
 332                 return 0;
 333
 334         case audioMasterUpdateDisplay:
 335                 SHOW_CALLBACK ("amc: audioMasterUpdateDisplay\n");
 336                 // something has changed, update 'multi-fx' display
 337                 effect->dispatcher(effect, effEditIdle, 0, 0, NULL, 0.0f);
 338                 return 0;
 339
 340         case audioMasterBeginEdit:
 341                 SHOW_CALLBACK ("amc: audioMasterBeginEdit\n");
 342                 // begin of automation session (when mouse down), parameter index in <index>
 343                 return 0;
 344
 345         case audioMasterEndEdit:
 346                 SHOW_CALLBACK ("amc: audioMasterEndEdit\n");
 347                 // end of automation session (when mouse up),     parameter index in <index>
 348                 return 0;
 349
 350         case audioMasterOpenFileSelector:
 351                 SHOW_CALLBACK ("amc: audioMasterOpenFileSelector\n");
 352                 // open a fileselector window with VstFileSelect* in <ptr>
 353                 return 0;
 354
 355         default:
 356                 SHOW_CALLBACK ("VST master dispatcher: undefed: %d\n", opcode);
 357                 break;
 358         }
 359
 360         return 0;
 361 }
 362