add StartTouch and EndTouch signals to Plugin class; make PluginInsert handle these...
[ardour.git] / libs / ardour / audio_unit.cc
index 5932b7394943cbaa5c5dfd2b60e7c697f82d0e5d..431fb99a481630ed5c843d5cccd7a1bbefcf0a4c 100644 (file)
@@ -43,6 +43,7 @@
 #include "ardour/filesystem_paths.h"
 #include "ardour/io.h"
 #include "ardour/audio_unit.h"
+#include "ardour/route.h"
 #include "ardour/session.h"
 #include "ardour/tempo.h"
 #include "ardour/utils.h"
@@ -809,7 +810,7 @@ AUPlugin::get_parameter (uint32_t which) const
        float val = 0.0;
        if (which < descriptors.size()) {
                const AUParameterDescriptor& d (descriptors[which]);
-               DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("get value of parameter %1 in scope %2 element %3\n", d.id, d.scope, d.element));
+               // DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("get value of parameter %1 in scope %2 element %3\n", d.id, d.scope, d.element));
                unit->GetParameter(d.id, d.scope, d.element, val);
        }
        return val;
@@ -1019,7 +1020,8 @@ AUPlugin::can_support_io_configuration (const ChanCount& in, ChanCount& out) con
 
        vector<pair<int,int> >& io_configs = pinfo->cache.io_configs;
 
-       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("%1 has %2 IO configurations\n", name(), io_configs.size()));
+       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("%1 has %2 IO configurations, looking for %3 in, %4 out\n", 
+                                                       name(), io_configs.size(), in, out));
 
        //Ardour expects the plugin to tell it the output
        //configuration but AU plugins can have multiple I/O
@@ -1034,7 +1036,13 @@ AUPlugin::can_support_io_configuration (const ChanCount& in, ChanCount& out) con
                int32_t possible_out = i->second;
 
                if ((possible_in == audio_in) && (possible_out == audio_out)) {
-                       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tCHOSEN: in %1 out %2\n", in, out));
+                       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("\tCHOSEN: %1 in %2 out to match in %3 out %4\n", 
+                                                                       possible_in, possible_out,
+                                                                       in, out));
+
+                       out.set (DataType::MIDI, 0);
+                       out.set (DataType::AUDIO, audio_out);
+
                        return 1;
                }
        }
@@ -1072,8 +1080,21 @@ AUPlugin::can_support_io_configuration (const ChanCount& in, ChanCount& out) con
                                audio_out = 2;
                                found = true;
                        } else if (possible_out < -2) {
-                               /* explicitly variable number of outputs, pick maximum */
-                               audio_out = -possible_out;
+                               /* explicitly variable number of outputs. 
+
+                                   Since Ardour can handle any configuration,
+                                   we have to somehow pick a number. 
+
+                                   We'll use the number of inputs
+                                   to the master bus, or 2 if there
+                                   is no master bus.
+                                */
+                                boost::shared_ptr<Route> master = _session.master_out();
+                                if (master) {
+                                        audio_out = master->input()->n_ports().n_audio();
+                                } else {
+                                        audio_out = 2;
+                                }
                                found = true;
                        } else {
                                /* exact number of outputs */
@@ -1136,6 +1157,7 @@ AUPlugin::can_support_io_configuration (const ChanCount& in, ChanCount& out) con
                                /* request is too large */
                        }
 
+
                        if (possible_out == -1) {
                                /* any output configuration possible, provide stereo out */
                                audio_out = 2;
@@ -1147,8 +1169,21 @@ AUPlugin::can_support_io_configuration (const ChanCount& in, ChanCount& out) con
                                audio_out = 2;
                                found = true;
                        } else if (possible_out < -2) {
-                               /* explicitly variable number of outputs, pick maximum */
-                               audio_out = -possible_out;
+                               /* explicitly variable number of outputs. 
+
+                                   Since Ardour can handle any configuration,
+                                   we have to somehow pick a number. 
+
+                                   We'll use the number of inputs
+                                   to the master bus, or 2 if there
+                                   is no master bus.
+                                */
+                                boost::shared_ptr<Route> master = _session.master_out();
+                                if (master) {
+                                        audio_out = master->input()->n_ports().n_audio();
+                                } else {
+                                        audio_out = 2;
+                                }
                                found = true;
                        } else {
                                /* exact number of outputs */
@@ -1300,9 +1335,14 @@ AUPlugin::connect_and_run (BufferSet& bufs, ChanMapping in_map, ChanMapping out_
                _last_nframes = nframes;
        }
 
+       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("%1 in %2 out %3 MIDI %4 bufs %5 (available %6)\n",
+                                                       name(), input_channels, output_channels, _has_midi_input,
+                                                       bufs.count(), bufs.available()));
+
        /* the apparent number of buffers matches our input configuration, but we know that the bufferset
           has the capacity to handle our outputs.
        */
+
        assert (bufs.available() >= ChanCount (DataType::AUDIO, output_channels));
 
        input_buffers = &bufs;
@@ -1310,10 +1350,6 @@ AUPlugin::connect_and_run (BufferSet& bufs, ChanMapping in_map, ChanMapping out_
        input_offset = offset;
        cb_offset = 0;
 
-       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("%1 in %2 out %3 MIDI %4 bufs %5 (available %6)\n",
-                                                       name(), input_channels, output_channels, _has_midi_input,
-                                                       bufs.count(), bufs.available()));
-
        buffers->mNumberBuffers = output_channels;
 
        for (int32_t i = 0; i < output_channels; ++i) {
@@ -1321,8 +1357,10 @@ AUPlugin::connect_and_run (BufferSet& bufs, ChanMapping in_map, ChanMapping out_
                buffers->mBuffers[i].mDataByteSize = nframes * sizeof (Sample);
                /* setting this to 0 indicates to the AU that it can provide buffers here
                   if necessary. if it can process in-place, it will use the buffers provided
-                  as input by ::render_callback() above. no documentation on what setting it
-                  to a non-null value means.
+                  as input by ::render_callback() above. 
+                   
+                   a non-null values tells the plugin to render into the buffer pointed
+                   at by the value.
                */
                buffers->mBuffers[i].mData = 0;
        }
@@ -1357,8 +1395,8 @@ AUPlugin::connect_and_run (BufferSet& bufs, ChanMapping in_map, ChanMapping out_
        ts.mSampleTime = frames_processed;
        ts.mFlags = kAudioTimeStampSampleTimeValid;
 
-       // DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("%1 render flags=%2 time=%3 nframes=%4 buffers=%5\n",
-       // name(), flags, frames_processed, nframes, buffers->mNumberBuffers));
+       DEBUG_TRACE (DEBUG::AudioUnits, string_compose ("%1 render flags=%2 time=%3 nframes=%4 buffers=%5\n",
+                                                        name(), flags, frames_processed, nframes, buffers->mNumberBuffers));
 
        if ((err = unit->Render (&flags, &ts, 0, nframes, buffers)) == noErr) {
 
@@ -1462,7 +1500,7 @@ AUPlugin::get_musical_time_location_callback (UInt32*   outDeltaSampleOffsetToNe
                } else {
                        *outDeltaSampleOffsetToNextBeat = (UInt32) 
                                floor (((Timecode::BBT_Time::ticks_per_beat - bbt.ticks)/Timecode::BBT_Time::ticks_per_beat) * // fraction of a beat to next beat
-                                      metric.meter().frames_per_division (metric.tempo(), _session.frame_rate())); // frames per beat
+                                      metric.tempo().frames_per_beat (_session.frame_rate())); // frames per beat
                }
        }
 
@@ -2099,7 +2137,7 @@ AUPlugin::find_presets ()
        for (FactoryPresetMap::iterator i = factory_preset_map.begin(); i != factory_preset_map.end(); ++i) {
                /* XXX: dubious */
                string const uri = string_compose ("%1", _presets.size ());
-               _presets.insert (make_pair (uri, Plugin::PresetRecord (uri, i->first)));
+               _presets.insert (make_pair (uri, Plugin::PresetRecord (uri, i->first, i->second)));
        }
 
 #endif
@@ -2155,7 +2193,7 @@ AUPluginInfo::load (Session& session)
 Glib::ustring
 AUPluginInfo::au_cache_path ()
 {
-       return Glib::build_filename (ARDOUR::user_config_directory().to_string(), "au_cache");
+       return Glib::build_filename (ARDOUR::user_config_directory(), "au_cache");
 }
 
 PluginInfoList*
@@ -2715,6 +2753,26 @@ AUPlugin::listen_to_parameter (uint32_t param_id)
                return -1;
        } 
 
+       event.mEventType = kAudioUnitEvent_BeginParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerAddEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
+       event.mEventType = kAudioUnitEvent_EndParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerAddEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
        return 0;
 }
 
@@ -2737,6 +2795,26 @@ AUPlugin::end_listen_to_parameter (uint32_t param_id)
                return -1;
        } 
 
+       event.mEventType = kAudioUnitEvent_BeginParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerRemoveEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
+       event.mEventType = kAudioUnitEvent_EndParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerRemoveEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
        return 0;
 }
 
@@ -2749,9 +2827,23 @@ AUPlugin::_parameter_change_listener (void* arg, void* src, const AudioUnitEvent
 void
 AUPlugin::parameter_change_listener (void* /*arg*/, void* /*src*/, const AudioUnitEvent* event, UInt64 /*host_time*/, Float32 new_value)
 {
-       ParameterMap::iterator i = parameter_map.find (event->mArgument.mParameter.mParameterID);
-
-       if (i != parameter_map.end()) {
-               ParameterChanged (i->second, new_value);
-       }
+        ParameterMap::iterator i;
+
+        if ((i = parameter_map.find (event->mArgument.mParameter.mParameterID)) == parameter_map.end()) {
+                return;
+        }
+        
+        switch (event->mEventType) {
+        case kAudioUnitEvent_BeginParameterChangeGesture:
+                StartTouch (i->second);
+                break;
+        case kAudioUnitEvent_EndParameterChangeGesture:
+                EndTouch (i->second);
+                break;
+        case kAudioUnitEvent_ParameterValueChange:
+                ParameterChanged (i->second, new_value);
+                break;
+        default:
+                break;
+        }
 }