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https://github.com/Relintai/pandemonium_engine.git
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Relintai
40a9b72afb
Adds the option to change the audio driver to the Dummy driver and back at runtime, with a set of MuteState flags - Disabled (user control), Silence (period of silence), Focus Loss (when app is not in focus), and Paused (when app is paused).
Control for the flags is added for the editor in EditorSettings, and for the project in ProjectSettings.
Editor defaults to muted (Dummy driver) when there is no audio output, and automatically switches to active on output. This significantly reduces CPU usage.
- lawnjelly
cedb01fb84
112 lines
3.7 KiB
C++
112 lines
3.7 KiB
C++
/*************************************************************************/
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/* audio_driver_dummy.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "audio_driver_dummy.h"
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#include "core/config/project_settings.h"
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#include "core/os/os.h"
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Error AudioDriverDummy::init() {
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active.clear();
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exit_thread.clear();
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samples_in = nullptr;
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mix_rate = GLOBAL_GET("audio/mix_rate");
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speaker_mode = SPEAKER_MODE_STEREO;
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channels = 2;
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int latency = GLOBAL_GET("audio/output_latency");
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buffer_frames = closest_power_of_2(latency * mix_rate / 1000);
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samples_in = memnew_arr(int32_t, buffer_frames * channels);
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thread.start(AudioDriverDummy::thread_func, this);
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return OK;
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};
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void AudioDriverDummy::thread_func(void *p_udata) {
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AudioDriverDummy *ad = (AudioDriverDummy *)p_udata;
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uint64_t usdelay = (ad->buffer_frames / float(ad->mix_rate)) * 1000000;
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while (!ad->exit_thread.is_set()) {
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if (ad->active.is_set()) {
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ad->lock();
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ad->start_counting_ticks();
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ad->audio_server_process(ad->buffer_frames, ad->samples_in);
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ad->stop_counting_ticks();
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ad->unlock();
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};
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OS::get_singleton()->delay_usec(usdelay);
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};
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};
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void AudioDriverDummy::start() {
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active.set();
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};
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int AudioDriverDummy::get_mix_rate() const {
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return mix_rate;
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};
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AudioDriver::SpeakerMode AudioDriverDummy::get_speaker_mode() const {
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return speaker_mode;
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};
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void AudioDriverDummy::lock() {
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mutex.lock();
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};
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void AudioDriverDummy::unlock() {
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mutex.unlock();
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};
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void AudioDriverDummy::finish() {
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exit_thread.set();
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thread.wait_to_finish();
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if (samples_in) {
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memdelete_arr(samples_in);
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samples_in = nullptr;
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};
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};
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AudioDriverDummy::AudioDriverDummy(){
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};
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AudioDriverDummy::~AudioDriverDummy(){
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};
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