initial commit, 4.5 stable

drivers/xaudio2/audio_driver_xaudio2.h

@@ -0,0 +1,109 @@
+/**************************************************************************/
+/*  audio_driver_xaudio2.h                                                */
+/**************************************************************************/
+/*                         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.                  */
+/*                                                                        */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "core/os/mutex.h"
+#include "core/os/thread.h"
+#include "core/templates/safe_refcount.h"
+#include "servers/audio_server.h"
+
+#include <mmsystem.h>
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <wrl/client.h>
+#include <xaudio2.h>
+
+class AudioDriverXAudio2 : public AudioDriver {
+	enum {
+		AUDIO_BUFFERS = 2
+	};
+
+	struct XAudio2DriverVoiceCallback : public IXAudio2VoiceCallback {
+		HANDLE buffer_end_event;
+		XAudio2DriverVoiceCallback() :
+				buffer_end_event(CreateEvent(nullptr, FALSE, FALSE, nullptr)) {}
+		void STDMETHODCALLTYPE OnBufferEnd(void *pBufferContext) {
+			SetEvent(buffer_end_event);
+		}
+
+		//Unused methods are stubs
+		void STDMETHODCALLTYPE OnStreamEnd() {}
+		void STDMETHODCALLTYPE OnVoiceProcessingPassEnd() {}
+		void STDMETHODCALLTYPE OnVoiceProcessingPassStart(UINT32 SamplesRequired) {}
+		void STDMETHODCALLTYPE OnBufferStart(void *pBufferContext) {}
+		void STDMETHODCALLTYPE OnLoopEnd(void *pBufferContext) {}
+		void STDMETHODCALLTYPE OnVoiceError(void *pBufferContext, HRESULT Error) {}
+	};
+
+	Thread thread;
+	Mutex mutex;
+
+	int32_t *samples_in = nullptr;
+	int16_t *samples_out[AUDIO_BUFFERS];
+
+	static void thread_func(void *p_udata);
+	int buffer_size = 0;
+
+	unsigned int mix_rate = 0;
+	SpeakerMode speaker_mode = SpeakerMode::SPEAKER_MODE_STEREO;
+
+	int channels = 0;
+
+	SafeFlag active;
+	SafeFlag exit_thread;
+	bool pcm_open = false;
+
+	WAVEFORMATEX wave_format = { 0 };
+	Microsoft::WRL::ComPtr<IXAudio2> xaudio;
+	int current_buffer = 0;
+	IXAudio2MasteringVoice *mastering_voice = nullptr;
+	XAUDIO2_BUFFER xaudio_buffer[AUDIO_BUFFERS];
+	IXAudio2SourceVoice *source_voice = nullptr;
+	XAudio2DriverVoiceCallback voice_callback;
+
+public:
+	virtual const char *get_name() const override {
+		return "XAudio2";
+	}
+
+	virtual Error init() override;
+	virtual void start() override;
+	virtual int get_mix_rate() const override;
+	virtual SpeakerMode get_speaker_mode() const override;
+	virtual float get_latency() override;
+
+	virtual void lock() override;
+	virtual void unlock() override;
+	virtual void finish() override;
+
+	AudioDriverXAudio2();
+	~AudioDriverXAudio2() {}
+};