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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck * |
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* Copyright (C) 2005 - 2007 Christian Schoenebeck * |
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* * |
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* This library 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 * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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* This library is distributed in the hope that it will be useful, * |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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* GNU General Public License for more details. * |
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* * |
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* You should have received a copy of the GNU General Public License * |
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* along with this library; if not, write to the Free Software * |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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|
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#include "FxSend.h" |
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|
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#include "../drivers/audio/AudioOutputDevice.h" |
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#include "../common/RTMath.h" |
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|
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#include <map> |
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|
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namespace LinuxSampler { |
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|
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FxSend::FxSend(EngineChannel* pEngineChannel, uint8_t MidiCtrl, String Name) throw (Exception) { |
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this->pEngineChannel = pEngineChannel; |
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AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice(); |
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const int iChanOffset = (pDevice) ? pDevice->ChannelCount() - pEngineChannel->Channels() : 0; |
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for (int i = 0; i < pEngineChannel->Channels(); i++) { |
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const int iDestination = iChanOffset + i; |
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Routing.push_back(iDestination); |
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} |
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SetMidiController(MidiCtrl); |
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sName = Name; |
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|
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// create an EngineChannel unique ID for this FxSend instance |
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if (!pEngineChannel->GetFxSendCount()) iId = 0; |
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else { |
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// get the highest existing map ID |
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uint highestIndex = 0; |
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for (uint i = 0; i < pEngineChannel->GetFxSendCount(); i++) |
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highestIndex = RTMath::Max(highestIndex, pEngineChannel->GetFxSend(i)->Id()); |
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// check if we reached the index limit |
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if (highestIndex + 1 < highestIndex) { |
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// search for an unoccupied map ID starting from 0 |
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for (uint i = 0; i < highestIndex; i++) { |
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bool bOccupied = false; |
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for (uint j = 0; j < pEngineChannel->GetFxSendCount(); j++) { |
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if (pEngineChannel->GetFxSend(j)->Id() == i) { |
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bOccupied = true; |
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break; |
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} |
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} |
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if (!bOccupied) { |
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iId = i; |
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goto __done; |
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} |
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} |
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throw Exception("Internal error: could not find unoccupied FxSend ID."); |
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} |
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iId = highestIndex + 1; |
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} |
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__done: |
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|
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fLevel = 0.3f; // default FX send level |
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} |
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|
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int FxSend::DestinationChannel(int SrcChan) { |
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if (SrcChan >= pEngineChannel->Channels()) return -1; |
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return Routing[SrcChan]; |
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} |
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|
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void FxSend::SetDestinationChannel(int SrcChan, int DstChan) throw (Exception) { |
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if (SrcChan < 0 || SrcChan >= pEngineChannel->Channels()) |
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throw Exception("Cannot alter FxSend routing, source channel out of bounds"); |
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AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice(); |
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if (pDevice) { |
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if (DstChan < 0 || DstChan >= pDevice->ChannelCount()) |
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throw Exception("Cannot alter FxSend routing, destination channel out of bounds"); |
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} else { // no audio device assigned yet |
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if (DstChan < 0 || DstChan >= pEngineChannel->Channels()) |
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throw Exception( |
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"there is no audio device yet, so you cannot set a " |
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"FxSend destination channel higher than the engine " |
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"channel's amount of channels" |
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); |
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} |
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Routing[SrcChan] = DstChan; |
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} |
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|
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void FxSend::UpdateChannels() { |
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if (Routing.size() > pEngineChannel->Channels()) { |
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// add routings with default destinations |
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AudioOutputDevice* pDevice = pEngineChannel->GetAudioOutputDevice(); |
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const int iChanOffset = (pDevice) ? pDevice->ChannelCount() - pEngineChannel->Channels() : 0; |
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for (int i = Routing.size(); i < pEngineChannel->Channels(); i++) { |
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const int iDestination = iChanOffset + i; |
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Routing.push_back(iDestination); |
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} |
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} else if (Routing.size() < pEngineChannel->Channels()) { |
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// shrink routing vector |
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Routing.resize(pEngineChannel->Channels()); |
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} |
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} |
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|
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float FxSend::Level() { |
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return fLevel; |
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} |
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|
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void FxSend::SetLevel(float f) { |
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fLevel = f; |
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} |
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|
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void FxSend::SetLevel(uint8_t iMidiValue) { |
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fLevel = float(iMidiValue & 0x7f) / 127.0f; |
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} |
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|
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uint8_t FxSend::MidiController() { |
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return MidiFxSendController; |
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} |
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|
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void FxSend::SetMidiController(uint8_t MidiCtrl) throw (Exception) { |
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if (MidiCtrl >> 7) |
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throw Exception("Invalid MIDI controller " + ToString((int)MidiCtrl)); |
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MidiFxSendController = MidiCtrl; |
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} |
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|
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String FxSend::Name() { |
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return sName; |
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} |
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|
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uint FxSend::Id() { |
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return iId; |
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} |
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|
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} // namespace LinuxSampler |