83 lines
2.7 KiB
C++
83 lines
2.7 KiB
C++
#include "jacksendreturn.hxx"
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#include "jack.hxx"
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#include <math.h>
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#include <assert.h>
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extern Jack* jack;
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JackSendReturn::JackSendReturn(int trackid, AudioProcessor *prev, jack_client_t *client)
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:_trackId(trackid), _previousProcessor(prev), _sendVol(1.0f)
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{
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char name[50];
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int trackid_human = trackid + 1;
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sprintf(name, "Send_track_%d_l\n",trackid_human);
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_sendPortL=jack_port_register(client,name,JACK_DEFAULT_AUDIO_TYPE,JackPortIsOutput,0);
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sprintf(name, "Send_track_%d_r\n",trackid_human);
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_sendPortR=jack_port_register(client,name,JACK_DEFAULT_AUDIO_TYPE,JackPortIsOutput,0);
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sprintf(name, "Return_track_%d_l\n",trackid_human);
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_returnPortL=jack_port_register(client,name,JACK_DEFAULT_AUDIO_TYPE,JackPortIsInput,0);
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sprintf(name, "Return_track_%d_r\n",trackid_human);
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_returnPortR=jack_port_register(client,name,JACK_DEFAULT_AUDIO_TYPE,JackPortIsInput,0);
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_active=false;
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_activeLag = 0;
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_counter=0;
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}
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void JackSendReturn::process(unsigned int nframes, Buffers *buffers)
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{
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// index = first-track + (track * channels)
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int trackoffset = _trackId * NCHANNELS;
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//Reset send buffer
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int offset=_counter%(buffers->nframes);
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float* sendtrackL=&(buffers->audio[Buffers::SEND_TRACK_0_L + trackoffset][0]);
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float* sendtrackR=&(buffers->audio[Buffers::SEND_TRACK_0_R + trackoffset][0]);
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float* rettrackL=&(buffers->audio[Buffers::RETURN_TRACK_0_L + trackoffset][0]);
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float* rettrackR=&(buffers->audio[Buffers::RETURN_TRACK_0_R + trackoffset][0]);
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memset(sendtrackL,0,nframes*sizeof(float));
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memset(sendtrackR,0,nframes*sizeof(float));
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//Process previous AudioProcessor
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_previousProcessor->process(nframes,buffers);
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float* sendL=(float*)jack_port_get_buffer(_sendPortL, (jack_nframes_t)(buffers->nframes));
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float* sendR=(float*)jack_port_get_buffer(_sendPortR, (jack_nframes_t)(buffers->nframes));
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float* retL =(float*)jack_port_get_buffer(_returnPortL,(jack_nframes_t)(buffers->nframes));
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float* retR =(float*)jack_port_get_buffer(_returnPortR,(jack_nframes_t)(buffers->nframes));
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if(offset) {
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sendL+=offset;
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sendR+=offset;
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retL+=offset;
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retR+=offset;
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}
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for(int i=0; i<nframes; i++) {
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_sendVolLag += jack->smoothing_value * (_sendVol - _sendVolLag);
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sendL[i] = _sendVolLag * sendtrackL[i];
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sendR[i] = _sendVolLag * sendtrackR[i];
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_activeLag += jack->smoothing_value * (float(_active) - _activeLag);
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rettrackL[i] = retL[i] * _activeLag + sendtrackL[i] * fabs(_activeLag - 1);
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rettrackR[i] = retR[i] * _activeLag + sendtrackR[i] * fabs(_activeLag - 1);
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}
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if(offset)
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assert(offset+nframes==buffers->nframes);
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_counter+=nframes;
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}
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void JackSendReturn::activate(bool act)
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{
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_active=act;
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}
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void JackSendReturn::sendVolume(float vol)
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{
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_sendVol=vol;
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}
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