160 lines
3.8 KiB
C++
160 lines
3.8 KiB
C++
/*
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* Author: Harry van Haaren 2013
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* harryhaaren@gmail.com
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*
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* 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
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "trackoutput.hxx"
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#include "jack.hxx"
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extern Jack* jack;
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TrackOutput::TrackOutput(int t, AudioProcessor* ap) :
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AudioProcessor(),
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track(t),
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_recordArm(false),
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previousInChain(ap)
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{
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// UI update
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uiUpdateConstant = jack->getSamplerate() / 30;
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uiUpdateCounter = jack->getSamplerate() / 30;
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dbMeter = new DBMeter( jack->getSamplerate() );
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_toMaster = 0.8;
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_toReverb = 0.0;
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_toSidechain = 0.0;
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_toPostSidechain = 0.0;
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_toPostfaderActive = 0;
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_toKeyActive = 0;
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_toXSideActive = true;
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}
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void TrackOutput::setMaster(float value)
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{
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_toMaster = value;
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}
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float TrackOutput::getMaster()
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{
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return _toMaster;
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}
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bool TrackOutput::recordArm()
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{
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return _recordArm;
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}
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void TrackOutput::recordArm(bool r)
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{
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_recordArm = r;
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}
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void TrackOutput::setSendActive( int send, bool a )
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{
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switch( send )
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{
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case SEND_POSTFADER:
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_toPostfaderActive = a;
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break;
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case SEND_KEY:
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_toKeyActive = a;
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break;
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//case SEND_XSIDE:
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// _toXSideActive = a;
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default:
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break;
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}
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}
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void TrackOutput::setSend( int send, float value )
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{
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switch( send )
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{
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case SEND_POSTFADER:
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_toReverb = value;
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break;
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case SEND_KEY:
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// setSendActive() handles on/off for this send
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//_toSidechain = value;
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break;
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case SEND_XSIDE:
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_toPostSidechain = value;
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break;
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}
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}
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void TrackOutput::process(unsigned int nframes, Buffers* buffers)
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{
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// get & zero track buffer
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float* trackBuffer = buffers->audio[Buffers::TRACK_0 + track];
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memset( trackBuffer, 0, sizeof(float)*nframes );
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// call process() up the chain
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previousInChain->process( nframes, buffers );
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// run the meter
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dbMeter->process( nframes, trackBuffer, trackBuffer );
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if (uiUpdateCounter > uiUpdateConstant )
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{
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float l = dbMeter->getLeftDB() * _toMaster;
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float r = dbMeter->getRightDB() * _toMaster;
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EventTrackSignalLevel e( track, l, r );
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writeToGuiRingbuffer( &e );
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uiUpdateCounter = 0;
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}
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uiUpdateCounter += nframes;
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// copy audio data into reverb / sidechain / master buffers
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float* reverb = buffers->audio[Buffers::SEND];
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float* sidechain = buffers->audio[Buffers::SIDECHAIN_KEY];
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float* postSidechain = buffers->audio[Buffers::SIDECHAIN_SIGNAL];
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float* masterL = buffers->audio[Buffers::MASTER_OUT_L];
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float* masterR = buffers->audio[Buffers::MASTER_OUT_R];
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for(unsigned int i = 0; i < nframes; i++)
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{
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// * master for "post-fader" sends
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float tmp = trackBuffer[i];
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// post-sidechain *moves* signal between "before/after" ducking, not add!
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masterL[i] += tmp * _toMaster * (1-_toPostSidechain);
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masterR[i] += tmp * _toMaster * (1-_toPostSidechain);
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if ( _toPostfaderActive )
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reverb[i] += tmp * _toReverb * _toMaster;
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if ( _toXSideActive )
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postSidechain[i] += tmp * _toPostSidechain * _toMaster;
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// turning down an element in the mix should *NOT* influence sidechaining
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if ( _toKeyActive )
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sidechain[i] += tmp;
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}
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}
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TrackOutput::~TrackOutput()
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{
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delete dbMeter;
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}
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