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* LinuxSampler - modular, streaming capable sampler * |
* LinuxSampler - modular, streaming capable sampler * |
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* * |
* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 Christian Schoenebeck * |
* Copyright (C) 2005 - 2008 Christian Schoenebeck * |
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* * |
* * |
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* This program is free software; you can redistribute it and/or modify * |
* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
* it under the terms of the GNU General Public License as published by * |
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#include "AudioOutputDeviceFactory.h" |
#include "AudioOutputDeviceFactory.h" |
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#include "AudioOutputDevice.h" |
#include "AudioOutputDevice.h" |
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#include "../../common/global_private.h" |
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namespace LinuxSampler { |
namespace LinuxSampler { |
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return true; |
return true; |
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} |
} |
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void AudioOutputDevice::ParameterActive::OnSetValue(bool b) throw (LinuxSamplerException) { |
void AudioOutputDevice::ParameterActive::OnSetValue(bool b) throw (Exception) { |
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if (b) ((AudioOutputDevice*)pDevice)->Play(); |
if (b) ((AudioOutputDevice*)pDevice)->Play(); |
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else ((AudioOutputDevice*)pDevice)->Stop(); |
else ((AudioOutputDevice*)pDevice)->Stop(); |
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} |
} |
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return std::vector<int>(); |
return std::vector<int>(); |
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} |
} |
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void AudioOutputDevice::ParameterSampleRate::OnSetValue(int i) throw (LinuxSamplerException) { |
int AudioOutputDevice::ParameterSampleRate::ValueAsInt() { |
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return (pDevice) ? (int) ((AudioOutputDevice*)pDevice)->SampleRate() |
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: DeviceCreationParameterInt::ValueAsInt(); |
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} |
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void AudioOutputDevice::ParameterSampleRate::OnSetValue(int i) throw (Exception) { |
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/* cannot happen, as parameter is fix */ |
/* cannot happen, as parameter is fix */ |
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} |
} |
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} |
} |
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optional<int> AudioOutputDevice::ParameterChannels::RangeMinAsInt(std::map<String,String> Parameters) { |
optional<int> AudioOutputDevice::ParameterChannels::RangeMinAsInt(std::map<String,String> Parameters) { |
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return optional<int>::nothing; |
return 1; |
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} |
} |
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optional<int> AudioOutputDevice::ParameterChannels::RangeMaxAsInt(std::map<String,String> Parameters) { |
optional<int> AudioOutputDevice::ParameterChannels::RangeMaxAsInt(std::map<String,String> Parameters) { |
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return std::vector<int>(); |
return std::vector<int>(); |
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} |
} |
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void AudioOutputDevice::ParameterChannels::OnSetValue(int i) throw (LinuxSamplerException) { |
void AudioOutputDevice::ParameterChannels::OnSetValue(int i) throw (Exception) { |
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((AudioOutputDevice*)pDevice)->AcquireChannels(i); |
((AudioOutputDevice*)pDevice)->AcquireChannels(i); |
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} |
} |
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// *************** AudioOutputDevice *************** |
// *************** AudioOutputDevice *************** |
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// * |
// * |
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AudioOutputDevice::AudioOutputDevice(std::map<String,DeviceCreationParameter*> DriverParameters) { |
AudioOutputDevice::AudioOutputDevice(std::map<String,DeviceCreationParameter*> DriverParameters) |
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: EnginesReader(Engines) { |
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this->Parameters = DriverParameters; |
this->Parameters = DriverParameters; |
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} |
} |
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{ |
{ |
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std::vector<AudioChannel*>::iterator iter = Channels.begin(); |
std::vector<AudioChannel*>::iterator iter = Channels.begin(); |
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while (iter != Channels.end()) { |
while (iter != Channels.end()) { |
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Channels.erase(iter); |
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delete *iter; |
delete *iter; |
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iter++; |
iter++; |
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} |
} |
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Channels.clear(); |
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} |
} |
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// delete all device parameters |
// delete all device parameters |
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{ |
{ |
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std::map<String,DeviceCreationParameter*>::iterator iter = Parameters.begin(); |
std::map<String,DeviceCreationParameter*>::iterator iter = Parameters.begin(); |
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while (iter != Parameters.end()) { |
while (iter != Parameters.end()) { |
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Parameters.erase(iter); |
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delete iter->second; |
delete iter->second; |
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iter++; |
iter++; |
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} |
} |
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Parameters.clear(); |
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} |
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// delete all master effect chains |
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{ |
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std::vector<EffectChain*>::iterator iter = vEffectChains.begin(); |
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while (iter != vEffectChains.end()) { |
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delete *iter; |
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iter++; |
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} |
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vEffectChains.clear(); |
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} |
} |
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} |
} |
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void AudioOutputDevice::Connect(Engine* pEngine) { |
void AudioOutputDevice::Connect(Engine* pEngine) { |
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if (Engines.find(pEngine) == Engines.end()) { |
std::set<Engine*>& engines = Engines.GetConfigForUpdate(); |
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Engines.insert(pEngine); |
if (engines.find(pEngine) == engines.end()) { |
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engines.insert(pEngine); |
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Engines.SwitchConfig().insert(pEngine); |
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// make sure the engine knows about the connection |
// make sure the engine knows about the connection |
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//pEngine->Connect(this); |
//pEngine->Connect(this); |
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} |
} |
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} |
} |
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void AudioOutputDevice::Disconnect(Engine* pEngine) { |
void AudioOutputDevice::Disconnect(Engine* pEngine) { |
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if (Engines.find(pEngine) != Engines.end()) { // if clause to prevent disconnect loop |
std::set<Engine*>& engines = Engines.GetConfigForUpdate(); |
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Engines.erase(pEngine); |
if (engines.find(pEngine) != engines.end()) { // if clause to prevent disconnect loop |
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engines.erase(pEngine); |
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Engines.SwitchConfig().erase(pEngine); |
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// make sure the engine knows about the disconnection |
// make sure the engine knows about the disconnection |
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//pEngine->DisconnectAudioOutputDevice(); |
//pEngine->DisconnectAudioOutputDevice(); |
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} |
} |
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} |
} |
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} |
} |
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uint AudioOutputDevice::ChannelCount() { |
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return Channels.size(); |
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} |
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std::map<String,DeviceCreationParameter*> AudioOutputDevice::DeviceParameters() { |
std::map<String,DeviceCreationParameter*> AudioOutputDevice::DeviceParameters() { |
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return Parameters; |
return Parameters; |
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} |
} |
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EffectChain* AudioOutputDevice::AddMasterEffectChain() { |
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EffectChain* pChain = new EffectChain(this); |
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vEffectChains.push_back(pChain); |
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return pChain; |
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} |
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void AudioOutputDevice::RemoveMasterEffectChain(uint iChain) throw (Exception) { |
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if (iChain >= vEffectChains.size()) |
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throw Exception( |
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"Could not remove master effect chain " + ToString(iChain) + |
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", index out of bounds" |
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); |
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std::vector<EffectChain*>::iterator iter = vEffectChains.begin(); |
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for (int i = 0; i < iChain; ++i) ++iter; |
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vEffectChains.erase(iter); |
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} |
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EffectChain* AudioOutputDevice::MasterEffectChain(uint iChain) const { |
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if (iChain >= vEffectChains.size()) return NULL; |
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return vEffectChains[iChain]; |
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} |
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uint AudioOutputDevice::MasterEffectChainCount() const { |
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return vEffectChains.size(); |
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} |
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int AudioOutputDevice::RenderAudio(uint Samples) { |
int AudioOutputDevice::RenderAudio(uint Samples) { |
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if (Channels.empty()) return 0; |
if (Channels.empty()) return 0; |
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for (; iterChannels != end; iterChannels++) |
for (; iterChannels != end; iterChannels++) |
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(*iterChannels)->Clear(); // zero out audio buffer |
(*iterChannels)->Clear(); // zero out audio buffer |
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} |
} |
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// do the same for master effects |
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{ |
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std::vector<EffectChain*>::iterator iterChains = vEffectChains.begin(); |
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std::vector<EffectChain*>::iterator end = vEffectChains.end(); |
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for (; iterChains != end; ++iterChains) |
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(*iterChains)->ClearAllChannels(); // zero out audio buffers |
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} |
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int result = 0; |
int result = 0; |
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// let all connected engines render audio for the current audio fragment cycle |
// let all connected engines render audio for the current audio fragment cycle |
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const std::set<Engine*>& engines = EnginesReader.Lock(); |
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#if CONFIG_RT_EXCEPTIONS |
#if CONFIG_RT_EXCEPTIONS |
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try |
try |
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#endif // CONFIG_RT_EXCEPTIONS |
#endif // CONFIG_RT_EXCEPTIONS |
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{ |
{ |
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std::set<Engine*>::iterator iterEngine = Engines.begin(); |
std::set<Engine*>::iterator iterEngine = engines.begin(); |
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std::set<Engine*>::iterator end = Engines.end(); |
std::set<Engine*>::iterator end = engines.end(); |
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for (; iterEngine != end; iterEngine++) { |
for (; iterEngine != end; iterEngine++) { |
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int res = (*iterEngine)->RenderAudio(Samples); |
int res = (*iterEngine)->RenderAudio(Samples); |
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if (res != 0) result = res; |
if (res != 0) result = res; |
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exit(EXIT_FAILURE); |
exit(EXIT_FAILURE); |
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} |
} |
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#endif // CONFIG_RT_EXCEPTIONS |
#endif // CONFIG_RT_EXCEPTIONS |
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EnginesReader.Unlock(); |
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// now that the engines (might) have left fx send signals for master |
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// effects, render all master effects |
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{ |
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std::vector<EffectChain*>::iterator iterChains = vEffectChains.begin(); |
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std::vector<EffectChain*>::iterator end = vEffectChains.end(); |
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for (; iterChains != end; ++iterChains) { |
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if (!(*iterChains)->EffectCount()) continue; |
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(*iterChains)->RenderAudio(Samples); |
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// mix the result of the last effect in the chain to the audio |
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// output device channel(s) |
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Effect* pLastEffect = |
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(*iterChains)->GetEffect((*iterChains)->EffectCount() - 1); |
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for (int iChan = 0; iChan < pLastEffect->OutputChannelCount() && iChan < ChannelCount(); ++iChan) |
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pLastEffect->OutputChannel(iChan)->MixTo(Channel(iChan), Samples); |
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} |
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} |
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return result; |
return result; |
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} |
} |