virtualx-engine/servers/audio/audio_driver_dummy.cpp
Emmanouil Papadeas c36460060e
Further refactoring to AudioDriver implementations after .
- Rename all instances of `capture_start()` and `capture_end()` to their new
  names. Fixes .
- More internal renames to match what was started in .
- Use `override` consistently so that such refactoring bugs can be caught.
- Harmonize the order of definition of the overridden virtual methods in each
  audio driver.
- Harmonize prototype for `set_output_device` and `set_input_device`.

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>
2023-02-09 11:02:00 +01:00

149 lines
4.6 KiB
C++

/**************************************************************************/
/* audio_driver_dummy.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
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/* 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. */
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/**************************************************************************/
#include "audio_driver_dummy.h"
#include "core/config/project_settings.h"
#include "core/os/os.h"
AudioDriverDummy *AudioDriverDummy::singleton = nullptr;
Error AudioDriverDummy::init() {
active.clear();
exit_thread.clear();
samples_in = nullptr;
if (mix_rate == -1) {
mix_rate = GLOBAL_GET("audio/driver/mix_rate");
}
channels = get_channels();
samples_in = memnew_arr(int32_t, (size_t)buffer_frames * channels);
if (use_threads) {
thread.start(AudioDriverDummy::thread_func, this);
}
return OK;
}
void AudioDriverDummy::thread_func(void *p_udata) {
AudioDriverDummy *ad = static_cast<AudioDriverDummy *>(p_udata);
uint64_t usdelay = (ad->buffer_frames / float(ad->mix_rate)) * 1000000;
while (!ad->exit_thread.is_set()) {
if (ad->active.is_set()) {
ad->lock();
ad->start_counting_ticks();
ad->audio_server_process(ad->buffer_frames, ad->samples_in);
ad->stop_counting_ticks();
ad->unlock();
}
OS::get_singleton()->delay_usec(usdelay);
}
}
void AudioDriverDummy::start() {
active.set();
}
int AudioDriverDummy::get_mix_rate() const {
return mix_rate;
}
AudioDriver::SpeakerMode AudioDriverDummy::get_speaker_mode() const {
return speaker_mode;
}
void AudioDriverDummy::lock() {
mutex.lock();
}
void AudioDriverDummy::unlock() {
mutex.unlock();
}
void AudioDriverDummy::set_use_threads(bool p_use_threads) {
use_threads = p_use_threads;
}
void AudioDriverDummy::set_speaker_mode(SpeakerMode p_mode) {
speaker_mode = p_mode;
}
void AudioDriverDummy::set_mix_rate(int p_rate) {
mix_rate = p_rate;
}
uint32_t AudioDriverDummy::get_channels() const {
static const int channels_for_mode[4] = { 2, 4, 8, 16 };
return channels_for_mode[speaker_mode];
}
void AudioDriverDummy::mix_audio(int p_frames, int32_t *p_buffer) {
ERR_FAIL_COND(!active.is_set()); // If not active, should not mix.
ERR_FAIL_COND(use_threads == true); // If using threads, this will not work well.
uint32_t todo = p_frames;
while (todo) {
uint32_t to_mix = MIN(buffer_frames, todo);
lock();
audio_server_process(to_mix, samples_in);
unlock();
uint32_t total_samples = to_mix * channels;
for (uint32_t i = 0; i < total_samples; i++) {
p_buffer[i] = samples_in[i];
}
todo -= to_mix;
p_buffer += total_samples;
}
}
void AudioDriverDummy::finish() {
if (use_threads) {
exit_thread.set();
thread.wait_to_finish();
}
if (samples_in) {
memdelete_arr(samples_in);
}
}
AudioDriverDummy::AudioDriverDummy() {
singleton = this;
}