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#include "sound_driver_rtaudio.h"
#include "engine/sound_driver_manager.h"
#include "globals/error_macros.h"
#include "globals/vector.h"
#include <mutex>
//
#include "drivers/rtaudio/rtaudio/RtAudio.h"
Vector<RtAudio *> rt_audios;
class SoundDriverRTAudio : public SoundDriver {
public:
RtAudio *rt_audio;
std::recursive_mutex mutex;
int device;
int mix_rate;
RtAudio::DeviceInfo info;
RtAudio::StreamParameters parameters;
unsigned int buffer_frames;
int step_frames;
bool active;
virtual String get_id() const {
String name = RtAudio::getApiName(rt_audio->getCurrentApi()).c_str();
name += "::";
name += info.name.c_str();
return name;
}
static int rt_audio_callbacks(void *outputBuffer, void *inputBuffer,
unsigned int nFrames,
double streamTime,
RtAudioStreamStatus status,
void *userData) {
SoundDriverRTAudio *driver = (SoundDriverRTAudio *)userData;
return driver->rt_audio_callback(outputBuffer, inputBuffer, nFrames, streamTime, status);
}
int rt_audio_callback(void *outputBuffer, void *inputBuffer,
unsigned int nFrames,
double streamTime,
RtAudioStreamStatus status) {
if (mutex.try_lock()) {
mix((AudioFrame *)outputBuffer, nFrames);
mutex.unlock();
}
return 0;
}
virtual void lock() {
mutex.lock();
}
virtual void unlock() {
mutex.unlock();
}
virtual String get_name() const {
String name = RtAudio::getApiDisplayName(rt_audio->getCurrentApi()).c_str();
name += ": ";
name += info.name.c_str();
return name;
}
virtual float get_max_level_l() {
return 0;
}
virtual float get_max_level_r() {
return 0;
}
virtual bool is_active() {
return active;
}
virtual bool init() {
ERR_FAIL_COND_V(active, false);
active = false;
parameters.deviceId = device;
parameters.nChannels = 2;
parameters.firstChannel = 0;
buffer_frames = SoundDriverManager::get_buffer_size_frames(SoundDriverManager::get_buffer_size());
step_frames = SoundDriverManager::SoundDriverManager::get_buffer_size_frames(SoundDriverManager::get_step_buffer_size());
mix_rate = SoundDriverManager::get_mix_frequency_hz(SoundDriverManager::get_mix_frequency());
try {
rt_audio->openStream(¶meters, NULL, RTAUDIO_FLOAT32, mix_rate, &buffer_frames,
rt_audio_callbacks, this);
} catch (RtAudioError &error) {
error.printMessage();
return false;
}
active = true;
rt_audio->startStream();
return true;
}
virtual void finish() {
ERR_FAIL_COND(!active);
active = false;
rt_audio->stopStream();
rt_audio->closeStream();
}
virtual int get_mix_rate() const {
return mix_rate;
}
virtual int get_buffer_size() const {
return buffer_frames;
}
virtual int get_step_size() const {
return step_frames;
}
SoundDriverRTAudio() {
active = false;
device = 0;
mix_rate = 44100;
}
~SoundDriverRTAudio() {}
};
static Vector<SoundDriverRTAudio *> drivers;
void register_rtaudio_driver() {
std::vector<RtAudio::Api> apis;
RtAudio::getCompiledApi(apis);
for (int i = 0; i < apis.size(); i++) {
RtAudio *rt_audio;
try {
rt_audio = new RtAudio(apis[i]);
} catch (RtAudioError &error) {
error.printMessage();
continue;
}
rt_audios.push_back(rt_audio);
// Determine the number of devices available
int devices = rt_audio->getDeviceCount();
// Scan through devices for various capabilities
for (int j = 0; j < devices; j++) {
SoundDriverRTAudio *driver = new SoundDriverRTAudio;
try {
driver->info = rt_audio->getDeviceInfo(j);
if (driver->info.probed) {
driver->device = j;
driver->rt_audio = rt_audio;
drivers.push_back(driver);
SoundDriverManager::register_driver(driver);
continue;
}
} catch (RtAudioError &error) {
error.printMessage();
}
delete driver; //not worked
}
}
}
void cleanup_rtaudio_driver() {
for (int i = 0; i < drivers.size(); i++) {
delete drivers[i];
}
for (int i = 0; i < rt_audios.size(); i++) {
delete rt_audios[i];
}
}
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