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godot/servers/audio_server.cpp

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/*************************************************************************/
/* audio_server.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "audio_server.h"
#include "globals.h"
#include "os/os.h"
#include "servers/audio/effects/audio_effect_compressor.h"
AudioDriver *AudioDriver::singleton=NULL;
AudioDriver *AudioDriver::get_singleton() {
return singleton;
}
void AudioDriver::set_singleton() {
singleton=this;
}
void AudioDriver::audio_server_process(int p_frames,int32_t *p_buffer,bool p_update_mix_time) {
if (p_update_mix_time)
update_mix_time(p_frames);
if (AudioServer::get_singleton())
AudioServer::get_singleton()->_driver_process(p_frames,p_buffer);
}
void AudioDriver::update_mix_time(int p_frames) {
_mix_amount+=p_frames;
_last_mix_time=OS::get_singleton()->get_ticks_usec();
}
double AudioDriver::get_mix_time() const {
double total = (OS::get_singleton()->get_ticks_usec() - _last_mix_time) / 1000000.0;
total+=_mix_amount/(double)get_mix_rate();
return total;
}
AudioDriver::AudioDriver() {
_last_mix_time=0;
_mix_amount=0;
}
AudioDriver *AudioDriverManager::drivers[MAX_DRIVERS];
int AudioDriverManager::driver_count=0;
void AudioDriverManager::add_driver(AudioDriver *p_driver) {
ERR_FAIL_COND(driver_count>=MAX_DRIVERS);
drivers[driver_count++]=p_driver;
}
int AudioDriverManager::get_driver_count() {
return driver_count;
}
AudioDriver *AudioDriverManager::get_driver(int p_driver) {
ERR_FAIL_INDEX_V(p_driver,driver_count,NULL);
return drivers[p_driver];
}
//////////////////////////////////////////////
//////////////////////////////////////////////
//////////////////////////////////////////////
//////////////////////////////////////////////
void AudioServer::_driver_process(int p_frames,int32_t* p_buffer) {
int todo=p_frames;
while(todo) {
if (to_mix==0) {
_mix_step();
}
int to_copy = MIN(to_mix,todo);
Bus *master = buses[0];
int from = buffer_size-to_mix;
int from_buf=p_frames-todo;
//master master, send to output
int cs = master->channels.size();
for(int k=0;k<cs;k++) {
if (master->channels[k].active) {
AudioFrame *buf = master->channels[k].buffer.ptr();
for(int j=0;j<to_copy;j++) {
float l = CLAMP(buf[from+j].l,-1.0,1.0);
int32_t vl = l*((1<<20)-1);
p_buffer[(from_buf+j)*(cs*2)+k*2+0]=vl<<11;
float r = CLAMP(buf[from+j].r,-1.0,1.0);
int32_t vr = r*((1<<20)-1);
p_buffer[(from_buf+j)*(cs*2)+k*2+1]=vr<<11;
}
} else {
for(int j=0;j<to_copy;j++) {
p_buffer[(from_buf+j)*(cs*2)+k*2+0]=0;
p_buffer[(from_buf+j)*(cs*2)+k*2+1]=0;
}
}
}
todo-=to_copy;
to_mix-=to_copy;
}
}
void AudioServer::_mix_step() {
for(int i=0;i<buses.size();i++) {
Bus *bus = buses[i];
bus->index_cache=i; //might be moved around by editor, so..
for(int k=0;k<bus->channels.size();k++) {
bus->channels[k].used=false;
}
}
//make callbacks for mixing the audio
for (Set<CallbackItem>::Element *E=callbacks.front();E;E=E->next()) {
E->get().callback(E->get().userdata);
}
for(int i=buses.size()-1;i>=0;i--) {
//go bus by bus
Bus *bus = buses[i];
for(int k=0;k<bus->channels.size();k++) {
if (bus->channels[k].active && !bus->channels[k].used) {
//buffer was not used, but it's still active, so it must be cleaned
AudioFrame *buf = bus->channels[k].buffer.ptr();
for(uint32_t j=0;j<buffer_size;j++) {
buf[j]=AudioFrame(0,0);
}
}
}
//process effects
for(int j=0;j<bus->effects.size();j++) {
if (!bus->effects[j].enabled)
continue;
for(int k=0;k<bus->channels.size();k++) {
if (!bus->channels[k].active)
continue;
bus->channels[k].effect_instances[j]->process(bus->channels[k].buffer.ptr(),temp_buffer[k].ptr(),buffer_size);
}
//swap buffers, so internal buffer always has the right data
for(int k=0;k<bus->channels.size();k++) {
if (!buses[i]->channels[k].active)
continue;
SWAP(bus->channels[k].buffer,temp_buffer[k]);
}
}
//process send
Bus *send=NULL;
if (i>0) {
//everything has a send save for master bus
if (!bus_map.has(bus->send)) {
send=buses[0];
} else {
send=bus_map[bus->send];
if (send->index_cache>=bus->index_cache) { //invalid, send to master
send=buses[0];
}
}
}
for(int k=0;k<bus->channels.size();k++) {
if (!bus->channels[k].active)
continue;
AudioFrame *buf = bus->channels[k].buffer.ptr();
AudioFrame peak = AudioFrame(0,0);
for(uint32_t j=0;j<buffer_size;j++) {
float l = ABS(buf[j].l);
if (l>peak.l) {
peak.l=l;
}
float r = ABS(buf[j].r);
if (r>peak.r) {
peak.r=r;
}
}
bus->channels[k].peak_volume=AudioFrame(Math::linear2db(peak.l+0.0000000001),Math::linear2db(peak.r+0.0000000001));
if (!bus->channels[k].used) {
//see if any audio is contained, because channel was not used
if (MAX(peak.r,peak.l) > Math::db2linear(channel_disable_treshold_db)) {
bus->channels[k].last_mix_with_audio=mix_frames;
} else if (mix_frames-bus->channels[k].last_mix_with_audio > channel_disable_frames ) {
bus->channels[k].active=false;
continue; //went inactive, dont mix.
}
}
if (send) {
//if not master bus, send
AudioFrame *target_buf = thread_get_channel_mix_buffer(send->index_cache,k);
for(uint32_t j=0;j<buffer_size;j++) {
target_buf[j]+=buf[j];
}
}
}
}
mix_frames+=buffer_size;
to_mix=buffer_size;
}
AudioFrame *AudioServer::thread_get_channel_mix_buffer(int p_bus,int p_buffer) {
ERR_FAIL_INDEX_V(p_bus,buses.size(),NULL);
ERR_FAIL_INDEX_V(p_buffer,buses[p_bus]->channels.size(),NULL);
AudioFrame *data = buses[p_bus]->channels[p_buffer].buffer.ptr();
if (!buses[p_bus]->channels[p_buffer].used) {
buses[p_bus]->channels[p_buffer].used=true;
buses[p_bus]->channels[p_buffer].active=true;
buses[p_bus]->channels[p_buffer].last_mix_with_audio=mix_frames;
for(uint32_t i=0;i<buffer_size;i++) {
data[i]=AudioFrame(0,0);
}
}
return data;
}
int AudioServer::thread_get_mix_buffer_size() const {
return buffer_size;
}
int AudioServer::thread_find_bus_index(const StringName& p_name) {
if (bus_map.has(p_name)) {
return bus_map[p_name]->index_cache;
} else {
return 0;
}
}
void AudioServer::set_bus_count(int p_count) {
ERR_FAIL_COND(p_count<1);
ERR_FAIL_INDEX(p_count,256);
lock();
int cb = buses.size();
if (p_count<buses.size()) {
for(int i=p_count;i<buses.size();i++) {
bus_map.erase(buses[i]->name);
memdelete(buses[i]);
}
}
buses.resize(p_count);
for(int i=cb;i<buses.size();i++) {
String attempt="New Bus";
int attempts=1;
while(true) {
bool name_free=true;
for(int j=0;j<i;j++) {
if (buses[j]->name==attempt) {
name_free=false;
break;
}
}
if (!name_free) {
attempts++;
attempt="New Bus " +itos(attempts);
} else {
break;
}
}
buses[i]=memnew(Bus);
buses[i]->channels.resize(_get_channel_count());
for(int j=0;j<_get_channel_count();j++) {
buses[i]->channels[j].buffer.resize(buffer_size);
}
buses[i]->name=attempt;
buses[i]->solo=false;
buses[i]->mute=false;
buses[i]->bypass=false;
buses[i]->volume_db=0;
if (i>0) {
buses[i]->send="Master";
}
bus_map[attempt]=buses[i];
}
unlock();
emit_signal("bus_layout_changed");
}
int AudioServer::get_bus_count() const {
return buses.size();
}
void AudioServer::set_bus_name(int p_bus,const String& p_name) {
ERR_FAIL_INDEX(p_bus,buses.size());
if (p_bus==0 && p_name!="Master")
return; //bus 0 is always master
lock();
if (buses[p_bus]->name==p_name) {
unlock();
return;
}
String attempt=p_name;
int attempts=1;
while(true) {
bool name_free=true;
for(int i=0;i<buses.size();i++) {
if (buses[i]->name==attempt) {
name_free=false;
break;
}
}
if (name_free) {
break;
}
attempts++;
attempt=p_name+" "+itos(attempts);
}
bus_map.erase(buses[p_bus]->name);
buses[p_bus]->name=attempt;
bus_map[attempt]=buses[p_bus];
unlock();
emit_signal("bus_layout_changed");
}
String AudioServer::get_bus_name(int p_bus) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),String());
return buses[p_bus]->name;
}
void AudioServer::set_bus_volume_db(int p_bus,float p_volume_db) {
ERR_FAIL_INDEX(p_bus,buses.size());
buses[p_bus]->volume_db=p_volume_db;
}
float AudioServer::get_bus_volume_db(int p_bus) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),0);
return buses[p_bus]->volume_db;
}
void AudioServer::set_bus_send(int p_bus,const StringName& p_send) {
ERR_FAIL_INDEX(p_bus,buses.size());
buses[p_bus]->send=p_send;
}
StringName AudioServer::get_bus_send(int p_bus) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),StringName());
return buses[p_bus]->send;
}
void AudioServer::set_bus_solo(int p_bus,bool p_enable) {
ERR_FAIL_INDEX(p_bus,buses.size());
buses[p_bus]->solo=p_enable;
}
bool AudioServer::is_bus_solo(int p_bus) const{
ERR_FAIL_INDEX_V(p_bus,buses.size(),false);
return buses[p_bus]->solo;
}
void AudioServer::set_bus_mute(int p_bus,bool p_enable){
ERR_FAIL_INDEX(p_bus,buses.size());
buses[p_bus]->mute=p_enable;
}
bool AudioServer::is_bus_mute(int p_bus) const{
ERR_FAIL_INDEX_V(p_bus,buses.size(),false);
return buses[p_bus]->mute;
}
void AudioServer::set_bus_bypass_effects(int p_bus,bool p_enable){
ERR_FAIL_INDEX(p_bus,buses.size());
buses[p_bus]->bypass=p_enable;
}
bool AudioServer::is_bus_bypassing_effects(int p_bus) const{
ERR_FAIL_INDEX_V(p_bus,buses.size(),false);
return buses[p_bus]->bypass;
}
void AudioServer::_update_bus_effects(int p_bus) {
for(int i=0;i<buses[p_bus]->channels.size();i++) {
buses[p_bus]->channels[i].effect_instances.resize(buses[p_bus]->effects.size());
for(int j=0;j<buses[p_bus]->effects.size();j++) {
Ref<AudioEffectInstance> fx = buses[p_bus]->effects[j].effect->instance();
if (fx->cast_to<AudioEffectCompressorInstance>()) {
fx->cast_to<AudioEffectCompressorInstance>()->set_current_channel(i);
}
buses[p_bus]->channels[i].effect_instances[j]=fx;
}
}
}
void AudioServer::add_bus_effect(int p_bus,const Ref<AudioEffect>& p_effect,int p_at_pos) {
ERR_FAIL_COND(p_effect.is_null());
ERR_FAIL_INDEX(p_bus,buses.size());
lock();
Bus::Effect fx;
fx.effect=p_effect;
//fx.instance=p_effect->instance();
fx.enabled=true;
if (p_at_pos>=buses[p_bus]->effects.size() || p_at_pos<0) {
buses[p_bus]->effects.push_back(fx);
} else {
buses[p_bus]->effects.insert(p_at_pos,fx);
}
_update_bus_effects(p_bus);
unlock();
}
void AudioServer::remove_bus_effect(int p_bus,int p_effect) {
ERR_FAIL_INDEX(p_bus,buses.size());
lock();
buses[p_bus]->effects.remove(p_effect);
_update_bus_effects(p_bus);
unlock();
}
int AudioServer::get_bus_effect_count(int p_bus) {
ERR_FAIL_INDEX_V(p_bus,buses.size(),0);
return buses[p_bus]->effects.size();
}
Ref<AudioEffect> AudioServer::get_bus_effect(int p_bus,int p_effect) {
ERR_FAIL_INDEX_V(p_bus,buses.size(),Ref<AudioEffect>());
ERR_FAIL_INDEX_V(p_effect,buses[p_bus]->effects.size(),Ref<AudioEffect>());
return buses[p_bus]->effects[p_effect].effect;
}
void AudioServer::swap_bus_effects(int p_bus,int p_effect,int p_by_effect) {
ERR_FAIL_INDEX(p_bus,buses.size());
ERR_FAIL_INDEX(p_effect,buses[p_bus]->effects.size());
ERR_FAIL_INDEX(p_by_effect,buses[p_bus]->effects.size());
lock();
SWAP( buses[p_bus]->effects[p_effect], buses[p_bus]->effects[p_by_effect] );
_update_bus_effects(p_bus);
unlock();
}
void AudioServer::set_bus_effect_enabled(int p_bus,int p_effect,bool p_enabled) {
ERR_FAIL_INDEX(p_bus,buses.size());
ERR_FAIL_INDEX(p_effect,buses[p_bus]->effects.size());
buses[p_bus]->effects[p_effect].enabled=p_enabled;
}
bool AudioServer::is_bus_effect_enabled(int p_bus,int p_effect) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),false);
ERR_FAIL_INDEX_V(p_effect,buses[p_bus]->effects.size(),false);
return buses[p_bus]->effects[p_effect].enabled;
}
void AudioServer::move_bus(int p_bus,int p_to_bus) {
ERR_FAIL_COND(p_bus<1 || p_bus>=buses.size());
ERR_FAIL_COND(p_bus<1 || p_to_bus>=buses.size());
}
float AudioServer::get_bus_peak_volume_left_db(int p_bus,int p_channel) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),0);
ERR_FAIL_INDEX_V(p_channel,buses[p_bus]->channels.size(),0);
return buses[p_bus]->channels[p_channel].peak_volume.l;
}
float AudioServer::get_bus_peak_volume_right_db(int p_bus,int p_channel) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),0);
ERR_FAIL_INDEX_V(p_channel,buses[p_bus]->channels.size(),0);
return buses[p_bus]->channels[p_channel].peak_volume.r;
}
bool AudioServer::is_bus_channel_active(int p_bus,int p_channel) const {
ERR_FAIL_INDEX_V(p_bus,buses.size(),false);
ERR_FAIL_INDEX_V(p_channel,buses[p_bus]->channels.size(),false);
return buses[p_bus]->channels[p_channel].active;
}
void AudioServer::init() {
channel_disable_treshold_db=GLOBAL_DEF("audio/channel_disable_treshold_db",-60.0);
channel_disable_frames=float(GLOBAL_DEF("audio/channel_disable_time",2.0))*get_mix_rate();
buffer_size=1024; //harcoded for now
switch( get_speaker_mode() ) {
case SPEAKER_MODE_STEREO: {
temp_buffer.resize(1);
} break;
case SPEAKER_SURROUND_51: {
temp_buffer.resize(3);
} break;
case SPEAKER_SURROUND_71: {
temp_buffer.resize(4);
} break;
}
for(int i=0;i<temp_buffer.size();i++) {
temp_buffer[i].resize(buffer_size);
}
mix_count=0;
set_bus_count(1);;
set_bus_name(0,"Master");
if (AudioDriver::get_singleton())
AudioDriver::get_singleton()->start();
}
void AudioServer::finish() {
for(int i=0;i<buses.size();i++) {
memdelete(buses[i]);
}
buses.clear();
}
void AudioServer::update() {
}
/* MISC config */
void AudioServer::lock() {
AudioDriver::get_singleton()->lock();
}
void AudioServer::unlock() {
AudioDriver::get_singleton()->unlock();
}
AudioServer::SpeakerMode AudioServer::get_speaker_mode() const {
return (AudioServer::SpeakerMode)AudioDriver::get_singleton()->get_speaker_mode();
}
float AudioServer::get_mix_rate() const {
return AudioDriver::get_singleton()->get_mix_rate();
}
float AudioServer::read_output_peak_db() const {
return 0;
}
AudioServer *AudioServer::get_singleton() {
return singleton;
}
double AudioServer::get_mix_time() const {
return 0;
}
double AudioServer::get_output_delay() const {
return 0;
}
AudioServer* AudioServer::singleton=NULL;
void* AudioServer::audio_data_alloc(uint32_t p_data_len,const uint8_t *p_from_data) {
void * ad = memalloc( p_data_len );
ERR_FAIL_COND_V(!ad,NULL);
if (p_from_data) {
copymem(ad,p_from_data,p_data_len);
}
audio_data_lock->lock();
audio_data[ad]=p_data_len;
audio_data_total_mem+=p_data_len;
audio_data_max_mem=MAX(audio_data_total_mem,audio_data_max_mem);
audio_data_lock->unlock();
return ad;
}
void AudioServer::audio_data_free(void* p_data) {
audio_data_lock->lock();
if (!audio_data.has(p_data)) {
audio_data_lock->unlock();
ERR_FAIL();
}
audio_data_total_mem-=audio_data[p_data];
audio_data.erase(p_data);
memfree(p_data);
audio_data_lock->unlock();
}
size_t AudioServer::audio_data_get_total_memory_usage() const{
return audio_data_total_mem;
}
size_t AudioServer::audio_data_get_max_memory_usage() const{
return audio_data_max_mem;
}
void AudioServer::add_callback(AudioCallback p_callback,void *p_userdata) {
lock();
CallbackItem ci;
ci.callback=p_callback;
ci.userdata=p_userdata;
callbacks.insert(ci);
unlock();
}
void AudioServer::remove_callback(AudioCallback p_callback,void *p_userdata) {
lock();
CallbackItem ci;
ci.callback=p_callback;
ci.userdata=p_userdata;
callbacks.erase(ci);
unlock();
}
void AudioServer::_bind_methods() {
ClassDB::bind_method(_MD("set_bus_count","amount"),&AudioServer::set_bus_count);
ClassDB::bind_method(_MD("get_bus_count"),&AudioServer::get_bus_count);
ClassDB::bind_method(_MD("set_bus_name","bus_idx","name"),&AudioServer::set_bus_name);
ClassDB::bind_method(_MD("get_bus_name","bus_idx"),&AudioServer::get_bus_name);
ClassDB::bind_method(_MD("set_bus_volume_db","bus_idx","volume_db"),&AudioServer::set_bus_volume_db);
ClassDB::bind_method(_MD("get_bus_volume_db","bus_idx"),&AudioServer::get_bus_volume_db);
ClassDB::bind_method(_MD("set_bus_send","bus_idx","send"),&AudioServer::set_bus_send);
ClassDB::bind_method(_MD("get_bus_send","bus_idx"),&AudioServer::get_bus_send);
ClassDB::bind_method(_MD("set_bus_solo","bus_idx","enable"),&AudioServer::set_bus_solo);
ClassDB::bind_method(_MD("is_bus_solo","bus_idx"),&AudioServer::is_bus_solo);
ClassDB::bind_method(_MD("set_bus_mute","bus_idx","enable"),&AudioServer::set_bus_mute);
ClassDB::bind_method(_MD("is_bus_mute","bus_idx"),&AudioServer::is_bus_mute);
ClassDB::bind_method(_MD("set_bus_bypass_effects","bus_idx","enable"),&AudioServer::set_bus_bypass_effects);
ClassDB::bind_method(_MD("is_bus_bypassing_effects","bus_idx"),&AudioServer::is_bus_bypassing_effects);
ClassDB::bind_method(_MD("add_bus_effect","bus_idx","effect:AudioEffect"),&AudioServer::add_bus_effect);
ClassDB::bind_method(_MD("remove_bus_effect","bus_idx","effect_idx"),&AudioServer::remove_bus_effect);
ClassDB::bind_method(_MD("get_bus_effect_count","bus_idx"),&AudioServer::add_bus_effect);
ClassDB::bind_method(_MD("get_bus_effect:AudioEffect","bus_idx","effect_idx"),&AudioServer::get_bus_effect);
ClassDB::bind_method(_MD("swap_bus_effects","bus_idx","effect_idx","by_effect_idx"),&AudioServer::swap_bus_effects);
ClassDB::bind_method(_MD("set_bus_effect_enabled","bus_idx","effect_idx","enabled"),&AudioServer::set_bus_effect_enabled);
ClassDB::bind_method(_MD("is_bus_effect_enabled","bus_idx","effect_idx"),&AudioServer::is_bus_effect_enabled);
ClassDB::bind_method(_MD("get_bus_peak_volume_left_db","bus_idx","channel"),&AudioServer::get_bus_peak_volume_left_db);
ClassDB::bind_method(_MD("get_bus_peak_volume_right_db","bus_idx","channel"),&AudioServer::get_bus_peak_volume_right_db);
ClassDB::bind_method(_MD("lock"),&AudioServer::lock);
ClassDB::bind_method(_MD("unlock"),&AudioServer::unlock);
ClassDB::bind_method(_MD("get_speaker_mode"),&AudioServer::get_speaker_mode);
ClassDB::bind_method(_MD("get_mix_rate"),&AudioServer::get_mix_rate);
ADD_SIGNAL(MethodInfo("bus_layout_changed") );
}
AudioServer::AudioServer() {
singleton=this;
audio_data_total_mem=0;
audio_data_max_mem=0;
audio_data_lock=Mutex::create();
mix_frames=0;
to_mix=0;
}
AudioServer::~AudioServer() {
memdelete(audio_data_lock);
}
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