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avoid voice_count becomming negative

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bug around fluid_voice_off(), fixes issue #151
This commit is contained in:
derselbst 2017-07-01 17:57:43 +02:00
parent 8af2eb4d7c
commit 80b46c601a
3 changed files with 28 additions and 16 deletions
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16
fluidsynth/src/synth/fluid_synth.c
View file

@ -800,8 +800,18 @@ delete_fluid_synth(fluid_synth_t* synth)
continue;
fluid_voice_unlock_rvoice(voice);
fluid_voice_overflow_rvoice_finished(voice);
if (fluid_voice_is_playing(voice))
fluid_voice_off(voice);
if (fluid_voice_is_playing(voice)) {
fluid_voice_off(voice);
/* If we only use fluid_voice_off(voice) it will trigger a delayed
* fluid_voice_stop(voice) via fluid_synth_check_finished_voices().
* But here, we are deleting the fluid_synth_t instance so
* fluid_voice_stop() will be never triggered resulting in
* SoundFont data never unloaded (i.e a serious memory leak).
* So, fluid_voice_stop() must be explicitly called to insure
* unloading SoundFont data
*/
fluid_voice_stop(voice);
}
}
}
@ -2812,7 +2822,7 @@ fluid_synth_check_finished_voices(fluid_synth_t* synth)
for (j=0; j < synth->polyphony; j++) {
if (synth->voice[j]->rvoice == fv) {
fluid_voice_unlock_rvoice(synth->voice[j]);
fluid_voice_off(synth->voice[j]);
fluid_voice_stop(synth->voice[j]);
break;
}
else if (synth->voice[j]->overflow_rvoice == fv) {

19
fluidsynth/src/synth/fluid_voice.c
View file

@ -1277,21 +1277,30 @@ void fluid_voice_overflow_rvoice_finished(fluid_voice_t* voice)
fluid_sample_null_ptr(&voice->overflow_rvoice->dsp.sample);
}
/*
* fluid_voice_off
*
* Force the voice into finished stage. Useful anywhere a voice
* needs to be cancelled from MIDI API.
*/
void fluid_voice_off(fluid_voice_t* voice)
{
UPDATE_RVOICE0(fluid_rvoice_voiceoff); /* request to finish the voice */
}
/*
* fluid_voice_stop
*
* Purpose:
* Turns off a voice, meaning that it is not processed
* anymore by the DSP loop.
*/
int
fluid_voice_off(fluid_voice_t* voice)
void
fluid_voice_stop(fluid_voice_t* voice)
{
fluid_profile(FLUID_PROF_VOICE_RELEASE, voice->ref);
voice->chan = NO_CHANNEL;
UPDATE_RVOICE0(fluid_rvoice_voiceoff);
if (voice->can_access_rvoice)
fluid_sample_null_ptr(&voice->rvoice->dsp.sample);
@ -1304,8 +1313,6 @@ fluid_voice_off(fluid_voice_t* voice)
/* Decrement voice count */
voice->channel->synth->active_voice_count--;
return FLUID_OK;
}
/**

9
fluidsynth/src/synth/fluid_voice.h
View file

@ -143,15 +143,10 @@ int fluid_voice_set_output_rate(fluid_voice_t* voice, fluid_real_t value);
function.*/
void fluid_voice_update_param(fluid_voice_t* voice, int gen);
/** fluid_voice_release
Force the voice into release stage. Usefuf anywhere a voice
needs to be damped even if pedals (sustain sostenuto) are depressed.
See fluid_synth_damp_voices_LOCAL(), fluid_synth_damp_voices_by_sostenuto_LOCAL,
fluid_voice_noteoff(), fluid_synth_stop_LOCAL().
*/
void fluid_voice_release(fluid_voice_t* voice);
int fluid_voice_noteoff(fluid_voice_t* voice);
int fluid_voice_off(fluid_voice_t* voice);
void fluid_voice_off(fluid_voice_t* voice);
void fluid_voice_stop(fluid_voice_t* voice);
void fluid_voice_overflow_rvoice_finished(fluid_voice_t* voice);
void fluid_voice_mix (fluid_voice_t *voice, int count, fluid_real_t* dsp_buf,
fluid_real_t* left_buf, fluid_real_t* right_buf,