void
fluid_rvoice_noteoff(fluid_rvoice_t* voice, unsigned int min_ticks)
{
if (min_ticks > voice->envlfo.ticks) {
/* Delay noteoff */
voice->envlfo.noteoff_ticks = min_ticks;
return;
}
voice->envlfo.noteoff_ticks = 0;
if (fluid_adsr_env_get_section(&voice->envlfo.volenv) == FLUID_VOICE_ENVATTACK) {
/* A voice is turned off during the attack section of the volume
* envelope. The attack section ramps up linearly with
* amplitude. The other sections use logarithmic scaling. Calculate new
* volenv_val to achieve equievalent amplitude during the release phase
* for seamless volume transition.
*/
if (fluid_adsr_env_get_val(&voice->envlfo.volenv) > 0){
fluid_real_t lfo = fluid_lfo_get_val(&voice->envlfo.modlfo) * -voice->envlfo.modlfo_to_vol;
fluid_real_t amp = fluid_adsr_env_get_val(&voice->envlfo.volenv) * pow (10.0, lfo / -200);
fluid_real_t env_value = - ((-200 * log (amp) / log (10.0) - lfo) / 960.0 - 1);
fluid_clip (env_value, 0.0, 1.0);
fluid_adsr_env_set_val(&voice->envlfo.volenv, env_value);
}
}
fluid_adsr_env_set_section(&voice->envlfo.volenv, FLUID_VOICE_ENVRELEASE);
fluid_adsr_env_set_section(&voice->envlfo.modenv, FLUID_VOICE_ENVRELEASE);
}
void
fluid_rvoice_voiceoff(fluid_rvoice_t* voice)
{
fluid_adsr_env_set_section(&voice->envlfo.volenv, FLUID_VOICE_ENVFINISHED);
fluid_adsr_env_set_section(&voice->envlfo.modenv, FLUID_VOICE_ENVFINISHED);
if (voice->dsp.sample) {
fluid_sample_decr_ref(voice->dsp.sample);
voice->dsp.sample = NULL;
}
}
void
fluid_rvoice_voiceoff(fluid_rvoice_t* voice)
{
fluid_adsr_env_set_section(&voice->envlfo.volenv, FLUID_VOICE_ENVFINISHED);
fluid_adsr_env_set_section(&voice->envlfo.modenv, FLUID_VOICE_ENVFINISHED);
}
