--- linuxsampler/trunk/src/network/lscpserver.cpp 2004/08/26 22:05:44 227 +++ linuxsampler/trunk/src/network/lscpserver.cpp 2005/06/17 19:49:30 660 @@ -3,19 +3,20 @@ * LinuxSampler - modular, streaming capable sampler * * * * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * + * Copyright (C) 2005 Christian Schoenebeck * * * - * This program is free software; you can redistribute it and/or modify * + * This library is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * - * This program is distributed in the hope that it will be useful, * + * This library is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * - * along with this program; if not, write to the Free Software * + * along with this library; if not, write to the Free Software * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * * MA 02111-1307 USA * ***************************************************************************/ @@ -23,8 +24,16 @@ #include "lscpserver.h" #include "lscpresultset.h" #include "lscpevent.h" +//#include "../common/global.h" -#include "../engines/gig/Engine.h" +#include + +#if HAVE_SQLITE3 +# include "sqlite3.h" +#endif + +#include "../engines/EngineFactory.h" +#include "../engines/EngineChannelFactory.h" #include "../drivers/audio/AudioOutputDeviceFactory.h" #include "../drivers/midi/MidiInputDeviceFactory.h" @@ -50,15 +59,21 @@ Mutex LSCPServer::NotifyMutex = Mutex(); Mutex LSCPServer::NotifyBufferMutex = Mutex(); Mutex LSCPServer::SubscriptionMutex = Mutex(); +Mutex LSCPServer::RTNotifyMutex = Mutex(); -LSCPServer::LSCPServer(Sampler* pSampler) : Thread(false, 0, -4) { +LSCPServer::LSCPServer(Sampler* pSampler) : Thread(true, false, 0, -4) { this->pSampler = pSampler; - LSCPEvent::RegisterEvent(LSCPEvent::event_channels, "CHANNELS"); + LSCPEvent::RegisterEvent(LSCPEvent::event_channel_count, "CHANNEL_COUNT"); LSCPEvent::RegisterEvent(LSCPEvent::event_voice_count, "VOICE_COUNT"); LSCPEvent::RegisterEvent(LSCPEvent::event_stream_count, "STREAM_COUNT"); LSCPEvent::RegisterEvent(LSCPEvent::event_buffer_fill, "BUFFER_FILL"); - LSCPEvent::RegisterEvent(LSCPEvent::event_info, "INFO"); + LSCPEvent::RegisterEvent(LSCPEvent::event_channel_info, "CHANNEL_INFO"); LSCPEvent::RegisterEvent(LSCPEvent::event_misc, "MISCELLANEOUS"); + hSocket = -1; +} + +LSCPServer::~LSCPServer() { + if (hSocket >= 0) close(hSocket); } /** @@ -76,7 +91,7 @@ } int LSCPServer::Main() { - int hSocket = socket(AF_INET, SOCK_STREAM, 0); + hSocket = socket(AF_INET, SOCK_STREAM, 0); if (hSocket < 0) { std::cerr << "LSCPServer: Could not create server socket." << std::endl; //return -1; @@ -159,6 +174,7 @@ int dummy; // just a temporary hack to fulfill the restart() function prototype restart(NULL, dummy); // restart the 'scanner' currentSocket = (*iter).hSession; //a hack + dmsg(2,("LSCPServer: [%s]\n",bufferedCommands[currentSocket].c_str())); if ((*iter).bVerbose) { // if echo mode enabled AnswerClient(bufferedCommands[currentSocket]); } @@ -175,6 +191,18 @@ } } + // check if some engine channel's parameter / status changed, if so notify the respective LSCP event subscribers + { + std::set engineChannels = EngineChannelFactory::EngineChannelInstances(); + std::set::iterator itEngineChannel = engineChannels.begin(); + std::set::iterator itEnd = engineChannels.end(); + for (; itEngineChannel != itEnd; ++itEngineChannel) { + if ((*itEngineChannel)->StatusChanged()) { + SendLSCPNotify(LSCPEvent(LSCPEvent::event_channel_info, (*itEngineChannel)->iSamplerChannelIndex)); + } + } + } + //Now let's deliver late notifies (if any) NotifyBufferMutex.Lock(); for (std::map::iterator iterNotify = bufferedNotifies.begin(); iterNotify != bufferedNotifies.end(); iterNotify++) { @@ -203,6 +231,18 @@ NotifyMutex.Unlock(); } +int LSCPServer::EventSubscribers( std::list events ) { + int subs = 0; + SubscriptionMutex.Lock(); + for( std::list::iterator iter = events.begin(); + iter != events.end(); iter++) + { + subs += eventSubscriptions.count(*iter); + } + SubscriptionMutex.Unlock(); + return subs; +} + void LSCPServer::SendLSCPNotify( LSCPEvent event ) { SubscriptionMutex.Lock(); if (eventSubscriptions.count(event.GetType()) == 0) { @@ -432,16 +472,20 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine loaded on channel"); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel yet"); if (!pSamplerChannel->GetAudioOutputDevice()) - throw LinuxSamplerException("No audio output device on channel"); + throw LinuxSamplerException("No audio output device connected to sampler channel"); if (bBackground) { - LSCPLoadInstrument *pLoadInstrument = new LSCPLoadInstrument(pEngine, Filename.c_str(), uiInstrument); - pLoadInstrument->StartThread(); + InstrumentLoader.StartNewLoad(Filename, uiInstrument, pEngineChannel); + } + else { + // tell the engine channel which instrument to load + pEngineChannel->PrepareLoadInstrument(Filename.c_str(), uiInstrument); + // actually start to load the instrument (blocks until completed) + pEngineChannel->LoadInstrument(); } - else pEngine->LoadInstrument(Filename.c_str(), uiInstrument); } catch (LinuxSamplerException e) { result.Error(e); @@ -450,18 +494,18 @@ } /** - * Will be called by the parser to load and deploy an engine. + * Will be called by the parser to assign a sampler engine type to a + * sampler channel. */ -String LSCPServer::LoadEngine(String EngineName, uint uiSamplerChannel) { +String LSCPServer::SetEngineType(String EngineName, uint uiSamplerChannel) { dmsg(2,("LSCPServer: LoadEngine(EngineName=%s,SamplerChannel=%d)\n", EngineName.c_str(), uiSamplerChannel)); LSCPResultSet result; try { - Engine::type_t type; - if ((EngineName == "GigEngine") || (EngineName == "gig")) type = Engine::type_gig; - else throw LinuxSamplerException("Unknown engine type"); SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - pSamplerChannel->LoadEngine(type); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + LockRTNotify(); + pSamplerChannel->SetEngineType(EngineName); + UnlockRTNotify(); } catch (LinuxSamplerException e) { result.Error(e); @@ -512,33 +556,42 @@ String LSCPServer::RemoveChannel(uint uiSamplerChannel) { dmsg(2,("LSCPServer: RemoveChannel(SamplerChannel=%d)\n", uiSamplerChannel)); LSCPResultSet result; + LockRTNotify(); pSampler->RemoveSamplerChannel(uiSamplerChannel); + UnlockRTNotify(); return result.Produce(); } /** - * Will be called by the parser to get all available engines. + * Will be called by the parser to get the amount of all available engines. */ String LSCPServer::GetAvailableEngines() { dmsg(2,("LSCPServer: GetAvailableEngines()\n")); - LSCPResultSet result("GigEngine"); + LSCPResultSet result("1"); return result.Produce(); } /** - * Will be called by the parser to get descriptions for a particular engine. + * Will be called by the parser to get a list of all available engines. + */ +String LSCPServer::ListAvailableEngines() { + dmsg(2,("LSCPServer: ListAvailableEngines()\n")); + LSCPResultSet result("\'GIG\'"); + return result.Produce(); +} + +/** + * Will be called by the parser to get descriptions for a particular + * sampler engine. */ String LSCPServer::GetEngineInfo(String EngineName) { dmsg(2,("LSCPServer: GetEngineInfo(EngineName=%s)\n", EngineName.c_str())); LSCPResultSet result; try { - if ((EngineName == "GigEngine") || (EngineName == "gig")) { - Engine* pEngine = new LinuxSampler::gig::Engine; - result.Add("DESCRIPTION", pEngine->Description()); - result.Add("VERSION", pEngine->Version()); - delete pEngine; - } - else throw LinuxSamplerException("Unknown engine type"); + Engine* pEngine = EngineFactory::Create(EngineName); + result.Add("DESCRIPTION", pEngine->Description()); + result.Add("VERSION", pEngine->Version()); + EngineFactory::Destroy(pEngine); } catch (LinuxSamplerException e) { result.Error(e); @@ -555,29 +608,32 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); //Defaults values String EngineName = "NONE"; float Volume = 0.0f; String InstrumentFileName = "NONE"; + String InstrumentName = "NONE"; int InstrumentIndex = -1; int InstrumentStatus = -1; int AudioOutputChannels = 0; String AudioRouting; - if (pEngine) { - EngineName = pEngine->EngineName(); - AudioOutputChannels = pEngine->Channels(); - Volume = pEngine->Volume(); - InstrumentStatus = pEngine->InstrumentStatus(); - InstrumentIndex = pEngine->InstrumentIndex(); - if (InstrumentIndex != -1) - InstrumentFileName = pEngine->InstrumentFileName(); - for (int chan = 0; chan < pEngine->Channels(); chan++) { + if (pEngineChannel) { + EngineName = pEngineChannel->EngineName(); + AudioOutputChannels = pEngineChannel->Channels(); + Volume = pEngineChannel->Volume(); + InstrumentStatus = pEngineChannel->InstrumentStatus(); + InstrumentIndex = pEngineChannel->InstrumentIndex(); + if (InstrumentIndex != -1) { + InstrumentFileName = pEngineChannel->InstrumentFileName(); + InstrumentName = pEngineChannel->InstrumentName(); + } + for (int chan = 0; chan < pEngineChannel->Channels(); chan++) { if (AudioRouting != "") AudioRouting += ","; - AudioRouting += ToString(pEngine->OutputChannel(chan)); + AudioRouting += ToString(pEngineChannel->OutputChannel(chan)); } } @@ -591,11 +647,12 @@ result.Add("MIDI_INPUT_DEVICE", GetMidiInputDeviceIndex(pSamplerChannel->GetMidiInputDevice())); result.Add("MIDI_INPUT_PORT", pSamplerChannel->GetMidiInputPort()); - if (pSamplerChannel->GetMidiInputChannel()) result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel()); - else result.Add("MIDI_INPUT_CHANNEL", "ALL"); + if (pSamplerChannel->GetMidiInputChannel() == MidiInputPort::midi_chan_all) result.Add("MIDI_INPUT_CHANNEL", "ALL"); + else result.Add("MIDI_INPUT_CHANNEL", pSamplerChannel->GetMidiInputChannel()); result.Add("INSTRUMENT_FILE", InstrumentFileName); result.Add("INSTRUMENT_NR", InstrumentIndex); + result.Add("INSTRUMENT_NAME", InstrumentName); result.Add("INSTRUMENT_STATUS", InstrumentStatus); } catch (LinuxSamplerException e) { @@ -613,10 +670,11 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine loaded on channel"); - result.Add(pEngine->VoiceCount()); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine loaded on sampler channel"); + if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel"); + result.Add(pEngineChannel->GetEngine()->VoiceCount()); } catch (LinuxSamplerException e) { result.Error(e); @@ -633,10 +691,11 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine loaded on channel"); - result.Add(pEngine->DiskStreamCount()); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel"); + if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel"); + result.Add(pEngineChannel->GetEngine()->DiskStreamCount()); } catch (LinuxSamplerException e) { result.Error(e); @@ -653,19 +712,19 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine loaded on channel"); - if (!pEngine->DiskStreamSupported()) - result.Add("NA"); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel"); + if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel"); + if (!pEngineChannel->GetEngine()->DiskStreamSupported()) result.Add("NA"); else { switch (ResponseType) { case fill_response_bytes: - result.Add(pEngine->DiskStreamBufferFillBytes()); - break; + result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillBytes()); + break; case fill_response_percentage: - result.Add(pEngine->DiskStreamBufferFillPercentage()); - break; + result.Add(pEngineChannel->GetEngine()->DiskStreamBufferFillPercentage()); + break; default: throw LinuxSamplerException("Unknown fill response type"); } @@ -681,6 +740,19 @@ dmsg(2,("LSCPServer: GetAvailableAudioOutputDrivers()\n")); LSCPResultSet result; try { + int n = AudioOutputDeviceFactory::AvailableDrivers().size(); + result.Add(n); + } + catch (LinuxSamplerException e) { + result.Error(e); + } + return result.Produce(); +} + +String LSCPServer::ListAvailableAudioOutputDrivers() { + dmsg(2,("LSCPServer: ListAvailableAudioOutputDrivers()\n")); + LSCPResultSet result; + try { String s = AudioOutputDeviceFactory::AvailableDriversAsString(); result.Add(s); } @@ -694,6 +766,19 @@ dmsg(2,("LSCPServer: GetAvailableMidiInputDrivers()\n")); LSCPResultSet result; try { + int n = MidiInputDeviceFactory::AvailableDrivers().size(); + result.Add(n); + } + catch (LinuxSamplerException e) { + result.Error(e); + } + return result.Produce(); +} + +String LSCPServer::ListAvailableMidiInputDrivers() { + dmsg(2,("LSCPServer: ListAvailableMidiInputDrivers()\n")); + LSCPResultSet result; + try { String s = MidiInputDeviceFactory::AvailableDriversAsString(); result.Add(s); } @@ -945,7 +1030,7 @@ // get audio channel AudioChannel* pChannel = pDevice->Channel(ChannelId); - if (!pChannel) throw LinuxSamplerException("Audio ouotput device does not have channel " + ToString(ChannelId) + "."); + if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + "."); // return the values of all audio channel parameters std::map parameters = pChannel->ChannelParameters(); @@ -1004,7 +1089,7 @@ // get audio channel AudioChannel* pChannel = pDevice->Channel(ChannelId); - if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + "."); + if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + "."); // get desired audio channel parameter std::map parameters = pChannel->ChannelParameters(); @@ -1037,7 +1122,7 @@ // get audio channel AudioChannel* pChannel = pDevice->Channel(ChannelId); - if (!pChannel) throw LinuxSamplerException("Audio output device does not have channel " + ToString(ChannelId) + "."); + if (!pChannel) throw LinuxSamplerException("Audio output device does not have audio channel " + ToString(ChannelId) + "."); // get desired audio channel parameter std::map parameters = pChannel->ChannelParameters(); @@ -1120,10 +1205,11 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine deployed on sampler channel " + ToString(uiSamplerChannel)); - pEngine->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine type yet assigned to sampler channel " + ToString(uiSamplerChannel)); + if (!pSamplerChannel->GetAudioOutputDevice()) throw LinuxSamplerException("No audio output device connected to sampler channel " + ToString(uiSamplerChannel)); + pEngineChannel->SetOutputChannel(ChannelAudioOutputChannel, AudioOutputDeviceInputChannel); } catch (LinuxSamplerException e) { result.Error(e); @@ -1136,7 +1222,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); std::map devices = pSampler->GetAudioOutputDevices(); if (!devices.count(AudioDeviceId)) throw LinuxSamplerException("There is no audio output device with index " + ToString(AudioDeviceId)); AudioOutputDevice* pDevice = devices[AudioDeviceId]; @@ -1153,7 +1239,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); // Driver type name aliasing... if (AudioOutputDriver == "Alsa") AudioOutputDriver = "ALSA"; if (AudioOutputDriver == "Jack") AudioOutputDriver = "JACK"; @@ -1190,7 +1276,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); pSamplerChannel->SetMidiInputPort(MIDIPort); } catch (LinuxSamplerException e) { @@ -1204,7 +1290,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); pSamplerChannel->SetMidiInputChannel((MidiInputPort::midi_chan_t) MIDIChannel); } catch (LinuxSamplerException e) { @@ -1218,7 +1304,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); std::map devices = pSampler->GetMidiInputDevices(); if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId)); MidiInputDevice* pDevice = devices[MIDIDeviceId]; @@ -1235,7 +1321,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); // Driver type name aliasing... if (MidiInputDriver == "Alsa") MidiInputDriver = "ALSA"; // Check if there's one MIDI input device already created @@ -1278,7 +1364,7 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Invalid channel number " + ToString(uiSamplerChannel)); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); std::map devices = pSampler->GetMidiInputDevices(); if (!devices.count(MIDIDeviceId)) throw LinuxSamplerException("There is no MIDI input device with index " + ToString(MIDIDeviceId)); MidiInputDevice* pDevice = devices[MIDIDeviceId]; @@ -1299,10 +1385,10 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine loaded on channel"); - pEngine->Volume(dVolume); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel"); + pEngineChannel->Volume(dVolume); } catch (LinuxSamplerException e) { result.Error(e); @@ -1318,10 +1404,11 @@ LSCPResultSet result; try { SamplerChannel* pSamplerChannel = pSampler->GetSamplerChannel(uiSamplerChannel); - if (!pSamplerChannel) throw LinuxSamplerException("Index out of bounds"); - Engine* pEngine = pSamplerChannel->GetEngine(); - if (!pEngine) throw LinuxSamplerException("No engine loaded on channel"); - pEngine->Reset(); + if (!pSamplerChannel) throw LinuxSamplerException("Invalid sampler channel number " + ToString(uiSamplerChannel)); + EngineChannel* pEngineChannel = pSamplerChannel->GetEngineChannel(); + if (!pEngineChannel) throw LinuxSamplerException("No engine type assigned to sampler channel"); + if (!pEngineChannel->GetEngine()) throw LinuxSamplerException("No audio output device connected to sampler channel"); + pEngineChannel->GetEngine()->Reset(); } catch (LinuxSamplerException e) { result.Error(e); @@ -1340,6 +1427,19 @@ } /** + * Will be called by the parser to return general informations about this + * sampler. + */ +String LSCPServer::GetServerInfo() { + dmsg(2,("LSCPServer: GetServerInfo()\n")); + LSCPResultSet result; + result.Add("DESCRIPTION", "LinuxSampler - modular, streaming capable sampler"); + result.Add("VERSION", VERSION); + result.Add("PROTOCOL_VERSION", "1.0"); + return result.Produce(); +} + +/** * Will be called by the parser to subscribe a client (frontend) on the * server for receiving event messages. */ @@ -1365,6 +1465,37 @@ return result.Produce(); } +static int select_callback(void * lscpResultSet, int argc, + char **argv, char **azColName) +{ + LSCPResultSet* resultSet = (LSCPResultSet*) lscpResultSet; + resultSet->Add(argc, argv); + return 0; +} + +String LSCPServer::QueryDatabase(String query) { + LSCPResultSet result; +#if HAVE_SQLITE3 + char* zErrMsg = NULL; + sqlite3 *db; + String selectStr = "SELECT " + query; + + int rc = sqlite3_open("linuxsampler.db", &db); + if (rc == SQLITE_OK) + { + rc = sqlite3_exec(db, selectStr.c_str(), select_callback, &result, &zErrMsg); + } + if ( rc != SQLITE_OK ) + { + result.Error(String(zErrMsg), rc); + } + sqlite3_close(db); +#else + result.Error(String("SQLITE3 was not installed when linuxsampler was built. SELECT statement is not available."), 0); +#endif + return result.Produce(); +} + /** * Will be called by the parser to enable or disable echo mode; if echo * mode is enabled, all commands from the client will (immediately) be @@ -1383,30 +1514,3 @@ } return result.Produce(); } - -// Instrument loader constructor. -LSCPLoadInstrument::LSCPLoadInstrument(Engine* pEngine, String Filename, uint uiInstrument) - : Thread(false, 0, -4) -{ - this->pEngine = pEngine; - this->Filename = Filename; - this->uiInstrument = uiInstrument; -} - -// Instrument loader process. -int LSCPLoadInstrument::Main() -{ - try { - pEngine->LoadInstrument(Filename.c_str(), uiInstrument); - } - - catch (LinuxSamplerException e) { - e.PrintMessage(); - } - - // Always re-enable the engine. - pEngine->Enable(); - - // FIXME: Shoot ourselves on the foot? - delete this; -}