18fbdbb456
Main: - It's now implemented thanks to `<mutex>`. No more platform-specific implementations. - `BinaryMutex` (non-recursive) is added, as an alternative for special cases. - Doesn't need allocation/deallocation anymore. It can live in the stack and be part of other classes. - Because of that, it's methods are now `const` and the inner mutex is `mutable` so it can be easily used in `const` contexts. - A no-op implementation is provided if `NO_THREADS` is defined. No more need to add `#ifdef NO_THREADS` just for this. - `MutexLock` now takes a reference. At this point the cases of null `Mutex`es are rare. If you ever need that, just don't use `MutexLock`. - Thread-safe utilities are therefore simpler now. Misc.: - `ScopedMutexLock` is dropped and replaced by `MutexLock`, because they were pretty much the same. - Every case of lock, do-something, unlock is replaced by `MutexLock` (complex cases where it's not straightfoward are kept as as explicit lock and unlock). - `ShaderRD` contained an `std::mutex`, which has been replaced by `Mutex`.
110 lines
4 KiB
C++
110 lines
4 KiB
C++
/*************************************************************************/
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/* audio_driver_xaudio2.h */
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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) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 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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#ifndef AUDIO_DRIVER_XAUDIO2_H
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#define AUDIO_DRIVER_XAUDIO2_H
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#include "core/os/mutex.h"
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#include "core/os/thread.h"
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#include "servers/audio_server.h"
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#include <mmsystem.h>
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#include <windows.h>
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#include <wrl/client.h>
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#include <xaudio2.h>
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class AudioDriverXAudio2 : public AudioDriver {
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enum {
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AUDIO_BUFFERS = 2
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};
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struct XAudio2DriverVoiceCallback : public IXAudio2VoiceCallback {
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HANDLE buffer_end_event;
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XAudio2DriverVoiceCallback() :
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buffer_end_event(CreateEvent(NULL, FALSE, FALSE, NULL)) {}
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void STDMETHODCALLTYPE OnBufferEnd(void *pBufferContext) {
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SetEvent(buffer_end_event);
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}
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//Unused methods are stubs
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void STDMETHODCALLTYPE OnStreamEnd() {}
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void STDMETHODCALLTYPE OnVoiceProcessingPassEnd() {}
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void STDMETHODCALLTYPE OnVoiceProcessingPassStart(UINT32 SamplesRequired) {}
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void STDMETHODCALLTYPE OnBufferStart(void *pBufferContext) {}
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void STDMETHODCALLTYPE OnLoopEnd(void *pBufferContext) {}
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void STDMETHODCALLTYPE OnVoiceError(void *pBufferContext, HRESULT Error) {}
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};
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Thread *thread;
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Mutex mutex;
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int32_t *samples_in;
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int16_t *samples_out[AUDIO_BUFFERS];
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static void thread_func(void *p_udata);
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int buffer_size;
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unsigned int mix_rate;
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SpeakerMode speaker_mode;
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int channels;
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bool active;
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bool thread_exited;
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mutable bool exit_thread;
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bool pcm_open;
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WAVEFORMATEX wave_format;
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Microsoft::WRL::ComPtr<IXAudio2> xaudio;
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int current_buffer;
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IXAudio2MasteringVoice *mastering_voice;
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XAUDIO2_BUFFER xaudio_buffer[AUDIO_BUFFERS];
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IXAudio2SourceVoice *source_voice;
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XAudio2DriverVoiceCallback voice_callback;
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public:
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const char *get_name() const;
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virtual Error init();
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virtual void start();
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virtual int get_mix_rate() const;
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virtual SpeakerMode get_speaker_mode() const;
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virtual float get_latency();
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virtual void lock();
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virtual void unlock();
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virtual void finish();
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AudioDriverXAudio2();
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~AudioDriverXAudio2();
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};
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#endif
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