justtype.c

#define NUM_OSCS 6

void ii_vox( uint8_t* d )
{
    if( !jt_state.smode ){ return; } // ignore if *not* in syn mode

    int8_t voice = (int8_t)d[0] -1;
    if( voice >= NUM_OSCS ){ return; } // voice out of range

    int16_t note = (d[1] << 8) + d[2];
    int16_t velo = (d[3] << 8) + d[4];

    if( friends.speed ){ // synth mode
        if(velo){ // note on
            if( voice < 0 ){ // voice[0] == assign all
                for( int i=0; i<NUM_OSCS; i++ ){
                    poly_assign_voice( poly, i, note );
                }
            } else { // single voice
                poly_assign_voice( poly, voice, note );
            }
            _set_pitch( voice, note );
        } else { // note off
            if( voice < 0 ){ // voice[0] == kill all
                for( int i=0; i<NUM_OSCS; i++ ){
                    poly_kill_voice( poly, i );
                }
            } else { // single voice
                poly_kill_voice( poly, voice );
            }
        }
        _velocity_trigger( voice, velo );
    } else {
        // geode
    }
}
void ii_note( uint8_t* d )
{
    if( !jt_state.smode ){ return; } // ignore if *not* in syn mode

    static int8_t voice; // static for geo mode
    int16_t note = (d[0] << 8) + d[1];
    int16_t velo = (d[2] << 8) + d[3];

    if( friends.speed ){ // synth
        if(velo){ // note on
            voice = poly_assign_note( poly, note );
            if( voice != -1 ){ // check allocator succeeded
                _set_pitch( voice, note );
            }
        } else { // note off
            voice = poly_kill_note( poly, note );
        }
        if( voice != -1 ){
            _velocity_trigger( voice, velo );
        }
    } else {
        // geode
    }
}

void _velocity_trigger( int8_t ch, int16_t velocity )
{
    // set boolean triggers
    _trigger( ch, !!velocity ); // mask to on/off

    if(!velocity) { return; } // don't set velocity if zero

    if(ch < 0){ // all
        if(velocity > MAXJFSOUND){
            for( uint8_t i=0; i<NUM_OSCS; i++ ){
                jt_state.velo[i] = 1.0f;
            }
        } else {
            float v = iMAXJFSOUND * (float)velocity;
            for( uint8_t i=0; i<NUM_OSCS; i++ ){
                jt_state.velo[i] = v;
            }
        }
    } else if(ch < NUM_OSCS){ // individual
        (velocity > MAXJFSOUND) // assume SOUND for now
            ? (jt_state.velo[ch] = 1.0f)
            : (jt_state.velo[ch] = iMAXJFSOUND * (float)velocity);
    }
}

#define JT_iOCTAVE ((float)1.0/(float)1638.3)

void _set_pitch( int8_t ch, int16_t pitch )
{
    if(ch < 0){ // all
        float mul = powf( 2.0f
                        , JT_iOCTAVE * (float)pitch );
        mul *= jt_state.base_pitch
               * jt_state.shift_pitch;
        for( uint8_t i=0; i<NUM_OSCS; i++ ){
            jt_state.pitch[i] = mul;
        }
    } else if(ch < NUM_OSCS){ // individual
        float mul = powf( 2.0f
                        , JT_iOCTAVE * (float)pitch );
        jt_state.pitch[ch] = mul
                             * jt_state.base_pitch
                             * jt_state.shift_pitch;
    }
}