Loopp/src/jacksendreturn.cxx

#include "jacksendreturn.hxx"
#include "jack.hxx"
extern Jack* jack;
JackSendReturn::JackSendReturn(int trackid, AudioProcessor *prev, jack_client_t *client)
    :m_trackid(trackid), m_previousProcessor(prev)
{
    char name[50];
    sprintf(name, "Send_track_%d\0",trackid);
    m_sendport=jack_port_register(client,name,JACK_DEFAULT_AUDIO_TYPE,JackPortIsOutput,0);
    sprintf(name, "Return_track_%d\0",trackid);
    m_returnport=jack_port_register(client,name,JACK_DEFAULT_AUDIO_TYPE,JackPortIsInput,0);
    m_active=false;
}

void JackSendReturn::process(unsigned int nframes, Buffers *buffers)
{
    //Reset send buffer
    memset(buffers->audio[Buffers::SEND_TRACK_0+m_trackid],0,nframes*sizeof(float));

    //Process previous AudioProcessor
    m_previousProcessor->process(nframes,buffers);
    float* send=(float*)jack_port_get_buffer(m_sendport,(jack_nframes_t)nframes);
    float* ret=(float*)jack_port_get_buffer(m_returnport,(jack_nframes_t)nframes);

    //Copy result of previous AudioProcessor to send port
//    memcpy(send,buffers->audio[Buffers::SEND_TRACK_0+m_trackid],nframes*sizeof(float));
//    memset(send,0,nframes*sizeof(float));
    for(int i=0;i<nframes;i++)
        send[i]=m_sendvol*buffers->audio[Buffers::SEND_TRACK_0+m_trackid][i];


    if(m_active)
        memcpy(buffers->audio[Buffers::RETURN_TRACK_0+m_trackid],ret,nframes*sizeof(float));
    else
        memcpy(buffers->audio[Buffers::RETURN_TRACK_0+m_trackid],
                buffers->audio[Buffers::SEND_TRACK_0+m_trackid],nframes*sizeof(float));

}

void JackSendReturn::activate(bool act)
{
    m_active=act;
}

void JackSendReturn::sendVolume(float vol)
{
    m_sendvol=vol;
}