godot/drivers/wasapi/audio_driver_wasapi.h
Pedro J. Estébanez 18fbdbb456 Reimplement Mutex with C++'s <mutex>
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- `ShaderRD` contained an `std::mutex`, which has been replaced by `Mutex`.
2020-02-26 20:40:10 +01:00

131 lines
4.4 KiB
C++

/*************************************************************************/
/* audio_driver_wasapi.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
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/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
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/* 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 */
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/*************************************************************************/
#ifndef AUDIO_DRIVER_WASAPI_H
#define AUDIO_DRIVER_WASAPI_H
#ifdef WASAPI_ENABLED
#include "core/os/mutex.h"
#include "core/os/thread.h"
#include "servers/audio_server.h"
#include <audioclient.h>
#include <mmdeviceapi.h>
#include <windows.h>
class AudioDriverWASAPI : public AudioDriver {
class AudioDeviceWASAPI {
public:
IAudioClient *audio_client;
IAudioRenderClient *render_client;
IAudioCaptureClient *capture_client;
bool active;
WORD format_tag;
WORD bits_per_sample;
unsigned int channels;
unsigned int frame_size;
String device_name;
String new_device;
AudioDeviceWASAPI() :
audio_client(NULL),
render_client(NULL),
capture_client(NULL),
active(false),
format_tag(0),
bits_per_sample(0),
channels(0),
frame_size(0),
device_name("Default"),
new_device("Default") {
}
};
AudioDeviceWASAPI audio_input;
AudioDeviceWASAPI audio_output;
Mutex mutex;
Thread *thread;
Vector<int32_t> samples_in;
unsigned int channels;
int mix_rate;
int buffer_frames;
bool thread_exited;
mutable bool exit_thread;
static _FORCE_INLINE_ void write_sample(WORD format_tag, int bits_per_sample, BYTE *buffer, int i, int32_t sample);
static _FORCE_INLINE_ int32_t read_sample(WORD format_tag, int bits_per_sample, BYTE *buffer, int i);
static void thread_func(void *p_udata);
Error init_render_device(bool reinit = false);
Error init_capture_device(bool reinit = false);
Error finish_render_device();
Error finish_capture_device();
Error audio_device_init(AudioDeviceWASAPI *p_device, bool p_capture, bool reinit);
Error audio_device_finish(AudioDeviceWASAPI *p_device);
Array audio_device_get_list(bool p_capture);
public:
virtual const char *get_name() const {
return "WASAPI";
}
virtual Error init();
virtual void start();
virtual int get_mix_rate() const;
virtual SpeakerMode get_speaker_mode() const;
virtual Array get_device_list();
virtual String get_device();
virtual void set_device(String device);
virtual void lock();
virtual void unlock();
virtual void finish();
virtual Error capture_start();
virtual Error capture_stop();
virtual Array capture_get_device_list();
virtual void capture_set_device(const String &p_name);
virtual String capture_get_device();
AudioDriverWASAPI();
};
#endif // AUDIO_DRIVER_WASAPI_H
#endif