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/*************************************************************************/
/* audio_driver_dummy.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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_driver_dummy.h"
#include "core/config/project_settings.h"
#include "core/os/os.h"
Error AudioDriverDummy::init() {
active = false;
thread_exited = false;
exit_thread = false;
samples_in = nullptr;
mix_rate = GLOBAL_GET("audio/mix_rate");
speaker_mode = SPEAKER_MODE_STEREO;
channels = 2;
int latency = GLOBAL_GET("audio/output_latency");
buffer_frames = closest_power_of_2(latency * mix_rate / 1000);
samples_in = memnew_arr(int32_t, buffer_frames * channels);
thread = Thread::create(AudioDriverDummy::thread_func, this);
return OK;
};
void AudioDriverDummy::thread_func(void *p_udata) {
AudioDriverDummy *ad = (AudioDriverDummy *)p_udata;
uint64_t usdelay = (ad->buffer_frames / float(ad->mix_rate)) * 1000000;
while (!ad->exit_thread) {
if (ad->active) {
ad->lock();
ad->audio_server_process(ad->buffer_frames, ad->samples_in);
ad->unlock();
};
OS::get_singleton()->delay_usec(usdelay);
};
ad->thread_exited = true;
};
void AudioDriverDummy::start() {
active = true;
};
int AudioDriverDummy::get_mix_rate() const {
return mix_rate;
};
AudioDriver::SpeakerMode AudioDriverDummy::get_speaker_mode() const {
return speaker_mode;
};
void AudioDriverDummy::lock() {
if (!thread) {
return;
}
mutex.lock();
};
void AudioDriverDummy::unlock() {
if (!thread) {
return;
}
mutex.unlock();
};
void AudioDriverDummy::finish() {
if (!thread) {
return;
}
exit_thread = true;
Thread::wait_to_finish(thread);
if (samples_in) {
memdelete_arr(samples_in);
};
memdelete(thread);
thread = nullptr;
};
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