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.
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.
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.
20 /******************************************************/
21 /*The big 'audio master' callback for linuxVST plugins*/
22 /******************************************************/
28 #include <ardour/vstfx.h>
29 #include <ardour/vestige/aeffectx.h>
31 #include <ardour/session.h>
32 #include <ardour/tempo.h>
33 #include <ardour/lxvst_plugin.h>
37 #define DEBUG_CALLBACKS
38 static int debug_callbacks = -1;
40 #ifdef DEBUG_CALLBACKS
41 #define SHOW_CALLBACK if (debug_callbacks) printf
43 #define SHOW_CALLBACK(...)
46 using namespace ARDOUR;
48 long Session::lxvst_callback (AEffect* effect,
55 static VstTimeInfo _timeInfo;
59 if (debug_callbacks < 0)
61 debug_callbacks = (getenv ("ARDOUR_DEBUG_VST_CALLBACKS") != 0);
64 if (effect && effect->user)
66 plug = (LXVSTPlugin*) (effect->user);
67 session = &plug->session();
68 SHOW_CALLBACK ("am callback 0x%x, opcode = %ld, plugin = \"%s\" ", (unsigned int)pthread_self(), opcode, plug->name());
74 SHOW_CALLBACK ("am callback 0x%x, opcode = %ld", (unsigned int)pthread_self(), opcode);
79 case audioMasterAutomate:
80 SHOW_CALLBACK ("amc: audioMasterAutomate\n");
82 // index, value, returns 0
84 effect->setParameter (effect, index, opt);
88 case audioMasterVersion:
89 SHOW_CALLBACK ("amc: audioMasterVersion\n");
90 // vst version, currently 2 (0 for older)
93 case audioMasterCurrentId:
94 SHOW_CALLBACK ("amc: audioMasterCurrentId\n");
95 // returns the unique id of a plug that's currently
100 SHOW_CALLBACK ("amc: audioMasterIdle\n");
101 // call application idle routine (this will
102 // call effEditIdle for all open editors too)
104 effect->dispatcher(effect, effEditIdle, 0, 0, NULL, 0.0f);
108 case audioMasterPinConnected:
109 SHOW_CALLBACK ("amc: audioMasterPinConnected\n");
110 // inquire if an input or output is beeing connected;
111 // index enumerates input or output counting from zero:
112 // value is 0 for input and != 0 otherwise. note: the
113 // return value is 0 for <true> such that older versions
114 // will always return true.
117 case audioMasterWantMidi:
118 SHOW_CALLBACK ("amc: audioMasterWantMidi\n");
119 // <value> is a filter which is currently ignored
122 case audioMasterGetTime:
123 SHOW_CALLBACK ("amc: audioMasterGetTime\n");
124 // returns const VstTimeInfo* (or 0 if not supported)
125 // <value> should contain a mask indicating which fields are required
126 // (see valid masks above), as some items may require extensive
128 memset(&_timeInfo, 0, sizeof(_timeInfo));
130 _timeInfo.samplePos = session->transport_frame();
131 _timeInfo.sampleRate = session->frame_rate();
134 if (value & (kVstTempoValid)) {
135 const Tempo& t (session->tempo_map().tempo_at (session->transport_frame()));
136 _timeInfo.tempo = t.beats_per_minute ();
137 _timeInfo.flags |= (kVstTempoValid);
139 if (value & (kVstBarsValid)) {
140 const Meter& m (session->tempo_map().meter_at (session->transport_frame()));
141 _timeInfo.timeSigNumerator = m.beats_per_bar ();
142 _timeInfo.timeSigDenominator = m.note_divisor ();
143 _timeInfo.flags |= (kVstBarsValid);
146 if (session->transport_speed() != 0.0f) {
147 _timeInfo.flags |= kVstTransportPlaying;
151 return (long)&_timeInfo;
153 case audioMasterProcessEvents:
154 SHOW_CALLBACK ("amc: audioMasterProcessEvents\n");
155 // VstEvents* in <ptr>
158 case audioMasterSetTime:
159 SHOW_CALLBACK ("amc: audioMasterSetTime\n");
160 // VstTimenfo* in <ptr>, filter in <value>, not supported
162 case audioMasterTempoAt:
163 SHOW_CALLBACK ("amc: audioMasterTempoAt\n");
164 // returns tempo (in bpm * 10000) at sample frame location passed in <value>
166 const Tempo& t (session->tempo_map().tempo_at (value));
167 return t.beats_per_minute() * 1000;
173 case audioMasterGetNumAutomatableParameters:
174 SHOW_CALLBACK ("amc: audioMasterGetNumAutomatableParameters\n");
177 case audioMasterGetParameterQuantization:
178 SHOW_CALLBACK ("amc: audioMasterGetParameterQuantization\n");
179 // returns the integer value for +1.0 representation,
180 // or 1 if full single float precision is maintained
181 // in automation. parameter index in <value> (-1: all, any)
184 case audioMasterIOChanged:
185 SHOW_CALLBACK ("amc: audioMasterIOChanged\n");
186 // numInputs and/or numOutputs has changed
189 case audioMasterNeedIdle:
190 SHOW_CALLBACK ("amc: audioMasterNeedIdle\n");
191 // plug needs idle calls (outside its editor window)
193 plug->vstfx()->wantIdle = 1;
197 case audioMasterSizeWindow:
198 SHOW_CALLBACK ("amc: audioMasterSizeWindow\n");
199 // index: width, value: height
202 case audioMasterGetSampleRate:
203 SHOW_CALLBACK ("amc: audioMasterGetSampleRate\n");
205 return session->frame_rate();
209 case audioMasterGetBlockSize:
210 SHOW_CALLBACK ("amc: audioMasterGetBlockSize\n");
212 return session->get_block_size();
216 case audioMasterGetInputLatency:
217 SHOW_CALLBACK ("amc: audioMasterGetInputLatency\n");
220 case audioMasterGetOutputLatency:
221 SHOW_CALLBACK ("amc: audioMasterGetOutputLatency\n");
224 case audioMasterGetPreviousPlug:
225 SHOW_CALLBACK ("amc: audioMasterGetPreviousPlug\n");
226 // input pin in <value> (-1: first to come), returns cEffect*
229 case audioMasterGetNextPlug:
230 SHOW_CALLBACK ("amc: audioMasterGetNextPlug\n");
231 // output pin in <value> (-1: first to come), returns cEffect*
233 case audioMasterWillReplaceOrAccumulate:
234 SHOW_CALLBACK ("amc: audioMasterWillReplaceOrAccumulate\n");
235 // returns: 0: not supported, 1: replace, 2: accumulate
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.
248 case audioMasterGetAutomationState:
249 SHOW_CALLBACK ("amc: audioMasterGetAutomationState\n");
250 // returns 0: not supported, 1: off, 2:read, 3:write, 4:read/write
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
261 case audioMasterOfflineWrite:
262 SHOW_CALLBACK ("amc: audioMasterOfflineWrite\n");
266 case audioMasterOfflineGetCurrentPass:
267 SHOW_CALLBACK ("amc: audioMasterOfflineGetCurrentPass\n");
268 case audioMasterOfflineGetCurrentMetaPass:
269 SHOW_CALLBACK ("amc: audioMasterOfflineGetCurrentMetaPass\n");
272 case audioMasterSetOutputSampleRate:
273 SHOW_CALLBACK ("amc: audioMasterSetOutputSampleRate\n");
274 // for variable i/o, sample rate in <opt>
277 case audioMasterGetSpeakerArrangement:
278 SHOW_CALLBACK ("amc: audioMasterGetSpeakerArrangement\n");
279 // (long)input in <value>, output in <ptr>
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, "Linux Audio Systems");
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, "Ardour");
294 case audioMasterGetVendorVersion:
295 SHOW_CALLBACK ("amc: audioMasterGetVendorVersion\n");
296 // returns vendor-specific version
299 case audioMasterVendorSpecific:
300 SHOW_CALLBACK ("amc: audioMasterVendorSpecific\n");
301 // no definition, vendor specific handling
304 case audioMasterSetIcon:
305 SHOW_CALLBACK ("amc: audioMasterSetIcon\n");
306 // void* in <ptr>, format not defined yet
309 case audioMasterCanDo:
310 SHOW_CALLBACK ("amc: audioMasterCanDo\n");
311 // string in ptr, see below
314 case audioMasterGetLanguage:
315 SHOW_CALLBACK ("amc: audioMasterGetLanguage\n");
319 case audioMasterOpenWindow:
320 SHOW_CALLBACK ("amc: audioMasterOpenWindow\n");
321 // returns platform specific ptr
324 case audioMasterCloseWindow:
325 SHOW_CALLBACK ("amc: audioMasterCloseWindow\n");
326 // close window, platform specific handle in <ptr>
329 case audioMasterGetDirectory:
330 SHOW_CALLBACK ("amc: audioMasterGetDirectory\n");
331 // get plug directory, FSSpec on MAC, else char*
334 case audioMasterUpdateDisplay:
335 SHOW_CALLBACK ("amc: audioMasterUpdateDisplay\n");
336 // something has changed, update 'multi-fx' display
338 effect->dispatcher(effect, effEditIdle, 0, 0, NULL, 0.0f);
342 case audioMasterBeginEdit:
343 SHOW_CALLBACK ("amc: audioMasterBeginEdit\n");
344 // begin of automation session (when mouse down), parameter index in <index>
347 case audioMasterEndEdit:
348 SHOW_CALLBACK ("amc: audioMasterEndEdit\n");
349 // end of automation session (when mouse up), parameter index in <index>
352 case audioMasterOpenFileSelector:
353 SHOW_CALLBACK ("amc: audioMasterOpenFileSelector\n");
354 // open a fileselector window with VstFileSelect* in <ptr>
358 SHOW_CALLBACK ("LXVST master dispatcher: undefed: %d\n", (int)opcode);