diff audioio/AudioGenerator.cpp @ 11:8dc0ae8fccdd

* Add LED button
* Add note model playback (currently assuming that value == MIDI pitch)
* Reorganise PlayParameters and move repository from ViewManager to new
  PlayParameterRepository class

--- a/audioio/AudioGenerator.cpp	Thu Feb 09 18:01:52 2006 +0000
+++ b/audioio/AudioGenerator.cpp	Wed Feb 15 17:58:35 2006 +0000
@@ -11,7 +11,9 @@
 
 #include "base/ViewManager.h"
 #include "base/PlayParameters.h"
+#include "base/PlayParameterRepository.h"
 
+#include "model/NoteModel.h"
 #include "model/DenseTimeValueModel.h"
 #include "model/SparseOneDimensionalModel.h"
 
@@ -58,15 +60,45 @@
 
     SparseOneDimensionalModel *sodm =
 	dynamic_cast<SparseOneDimensionalModel *>(model);
-    if (!sodm) return false; // nothing else to initialise
+    if (sodm) {
+	QString pluginId = QString("dssi:%1:sample_player").
+	    arg(PluginIdentifier::BUILTIN_PLUGIN_SONAME);
+	RealTimePluginInstance *plugin = loadPlugin(pluginId, "cowbell");
+	if (plugin) {
+	    QMutexLocker locker(&m_mutex);
+	    m_synthMap[sodm] = plugin;
+	    return true;
+	} else {
+	    return false;
+	}
+    }
 
+    NoteModel *nm = dynamic_cast<NoteModel *>(model);
+    if (nm) {
+	QString pluginId = QString("dssi:%1:sample_player").
+	    arg(PluginIdentifier::BUILTIN_PLUGIN_SONAME);
+	RealTimePluginInstance *plugin = loadPlugin(pluginId, "piano");
+	if (plugin) {
+	    QMutexLocker locker(&m_mutex);
+	    m_synthMap[nm] = plugin;
+	    return true;
+	} else {
+	    return false;
+	}
+    }
+	
+
+    return false;
+}
+
+RealTimePluginInstance *
+AudioGenerator::loadPlugin(QString pluginId, QString program)
+{
 //	QString pluginId = "dssi:/usr/lib/dssi/dssi-vst.so:FEARkILLERrev1.dll";
 //	QString pluginId = "dssi:/usr/lib/dssi/hexter.so:hexter";
 //	QString pluginId = "dssi:/usr/lib/dssi/sineshaper.so:sineshaper";
 //	QString pluginId = "dssi:/usr/local/lib/dssi/xsynth-dssi.so:Xsynth";
 //	QString pluginId = "dssi:/usr/local/lib/dssi/trivial_synth.so:TS";
-    QString pluginId = QString("dssi:%1:sample_player").
-	arg(PluginIdentifier::BUILTIN_PLUGIN_SONAME);
     RealTimePluginFactory *factory =
 	RealTimePluginFactory::instanceFor(pluginId);
     
@@ -80,24 +112,24 @@
 	(pluginId, 0, 0, m_sourceSampleRate, m_pluginBlockSize, m_targetChannelCount);
 
     if (instance) {
-	QMutexLocker locker(&m_mutex);
-	m_synthMap[sodm] = instance;
 	for (unsigned int i = 0; i < instance->getParameterCount(); ++i) {
 	    instance->setParameterValue(i, instance->getParameterDefault(i));
 	}
-	QString program = instance->getProgram(0, 0);
+	QString defaultProgram = instance->getProgram(0, 0);
+	if (defaultProgram != "") {
+	    std::cerr << "first selecting default program " << defaultProgram.toLocal8Bit().data() << std::endl;
+	    instance->selectProgram(defaultProgram);
+	}
 	if (program != "") {
-	    std::cerr << "selecting program " << program.toLocal8Bit().data() << std::endl;
+	    std::cerr << "now selecting desired program " << program.toLocal8Bit().data() << std::endl;
 	    instance->selectProgram(program);
 	}
-	instance->selectProgram("cowbell"); //!!!
 	instance->setIdealChannelCount(m_targetChannelCount); // reset!
     } else {
 	std::cerr << "Failed to instantiate plugin" << std::endl;
-	return false;
     }
 
-    return true;
+    return instance;
 }
 
 void
@@ -169,7 +201,8 @@
 
     QMutexLocker locker(&m_mutex);
 
-    PlayParameters *parameters = m_viewManager->getPlayParameters(model);
+    PlayParameters *parameters =
+	PlayParameterRepository::instance()->getPlayParameters(model);
     if (!parameters) return frameCount;
 
     bool playing = !parameters->isPlayMuted();
@@ -191,6 +224,12 @@
 					    buffer, gain, pan, fadeIn, fadeOut);
     }
 
+    NoteModel *nm = dynamic_cast<NoteModel *>(model);
+    if (nm) {
+	return mixNoteModel(nm, startFrame, frameCount,
+			    buffer, gain, pan, fadeIn, fadeOut);
+    }
+
     return frameCount;
 }
 
@@ -246,7 +285,7 @@
 
     return got;
 }
-    
+  
 size_t
 AudioGenerator::mixSparseOneDimensionalModel(SparseOneDimensionalModel *sodm,
 					     size_t startFrame, size_t frames,
@@ -377,3 +416,137 @@
     return got;
 }
 
+    
+//!!! mucho duplication with above -- refactor
+size_t
+AudioGenerator::mixNoteModel(NoteModel *nm,
+			     size_t startFrame, size_t frames,
+			     float **buffer, float gain, float pan,
+			     size_t /* fadeIn */,
+			     size_t /* fadeOut */)
+{
+    RealTimePluginInstance *plugin = m_synthMap[nm];
+    if (!plugin) return 0;
+
+    size_t latency = plugin->getLatency();
+    size_t blocks = frames / m_pluginBlockSize;
+    
+    //!!! hang on -- the fact that the audio callback play source's
+    //buffer is a multiple of the plugin's buffer size doesn't mean
+    //that we always get called for a multiple of it here (because it
+    //also depends on the JACK block size).  how should we ensure that
+    //all models write the same amount in to the mix, and that we
+    //always have a multiple of the plugin buffer size?  I guess this
+    //class has to be queryable for the plugin buffer size & the
+    //callback play source has to use that as a multiple for all the
+    //calls to mixModel
+
+    size_t got = blocks * m_pluginBlockSize;
+
+#ifdef DEBUG_AUDIO_GENERATOR
+    std::cout << "mixModel [note]: frames " << frames
+	      << ", blocks " << blocks << std::endl;
+#endif
+
+    snd_seq_event_t onEv;
+    onEv.type = SND_SEQ_EVENT_NOTEON;
+    onEv.data.note.channel = 0;
+    onEv.data.note.note = 64;
+    onEv.data.note.velocity = 127;
+
+    snd_seq_event_t offEv;
+    offEv.type = SND_SEQ_EVENT_NOTEOFF;
+    offEv.data.note.channel = 0;
+    offEv.data.note.velocity = 0;
+    
+    NoteOffSet &noteOffs = m_noteOffs[nm];
+
+    for (size_t i = 0; i < blocks; ++i) {
+
+	size_t reqStart = startFrame + i * m_pluginBlockSize;
+
+	NoteModel::PointList points =
+	    nm->getPoints(reqStart + latency,
+			    reqStart + latency + m_pluginBlockSize);
+
+	RealTime blockTime = RealTime::frame2RealTime
+	    (startFrame + i * m_pluginBlockSize, m_sourceSampleRate);
+
+	for (NoteModel::PointList::iterator pli =
+		 points.begin(); pli != points.end(); ++pli) {
+
+	    size_t pliFrame = pli->frame;
+
+	    if (pliFrame >= latency) pliFrame -= latency;
+
+	    if (pliFrame < reqStart ||
+		pliFrame >= reqStart + m_pluginBlockSize) continue;
+
+	    while (noteOffs.begin() != noteOffs.end() &&
+		   noteOffs.begin()->frame <= pliFrame) {
+
+		RealTime eventTime = RealTime::frame2RealTime
+		    (noteOffs.begin()->frame, m_sourceSampleRate);
+
+		offEv.data.note.note = noteOffs.begin()->pitch;
+
+#ifdef DEBUG_AUDIO_GENERATOR
+		std::cerr << "mixModel [note]: sending note-off event at time " << eventTime << " frame " << noteOffs.begin()->frame << std::endl;
+#endif
+
+		plugin->sendEvent(eventTime, &offEv);
+		noteOffs.erase(noteOffs.begin());
+	    }
+
+	    RealTime eventTime = RealTime::frame2RealTime
+		(pliFrame, m_sourceSampleRate);
+	    
+	    onEv.data.note.note = lrintf(pli->value);
+
+	    plugin->sendEvent(eventTime, &onEv);
+
+#ifdef DEBUG_AUDIO_GENERATOR
+	    std::cout << "mixModel [note]: point at frame " << pliFrame << ", block start " << (startFrame + i * m_pluginBlockSize) << ", resulting time " << eventTime << std::endl;
+#endif
+	    
+	    size_t duration = pli->duration;
+	    NoteOff noff;
+	    noff.pitch = onEv.data.note.note;
+	    noff.frame = pliFrame + duration;
+	    noteOffs.insert(noff);
+	}
+
+	while (noteOffs.begin() != noteOffs.end() &&
+	       noteOffs.begin()->frame <=
+	       startFrame + i * m_pluginBlockSize + m_pluginBlockSize) {
+
+	    RealTime eventTime = RealTime::frame2RealTime
+		(noteOffs.begin()->frame, m_sourceSampleRate);
+
+	    offEv.data.note.note = noteOffs.begin()->pitch;
+
+#ifdef DEBUG_AUDIO_GENERATOR
+		std::cerr << "mixModel [note]: sending leftover note-off event at time " << eventTime << " frame " << noteOffs.begin()->frame << std::endl;
+#endif
+
+	    plugin->sendEvent(eventTime, &offEv);
+	    noteOffs.erase(noteOffs.begin());
+	}
+	
+	plugin->run(blockTime);
+	float **outs = plugin->getAudioOutputBuffers();
+
+	for (size_t c = 0; c < m_targetChannelCount && c < plugin->getAudioOutputCount(); ++c) {
+#ifdef DEBUG_AUDIO_GENERATOR
+	    std::cout << "mixModel [note]: adding " << m_pluginBlockSize << " samples from plugin output " << c << std::endl;
+#endif
+
+	    for (size_t j = 0; j < m_pluginBlockSize; ++j) {
+		buffer[c][i * m_pluginBlockSize + j] += gain * outs[c][j];
+	    }
+	}
+    }
+
+    return got;
+}
+