with_xaudio2="1"

		with_xaudio2

			--with-xaudio2)               with_xaudio2="2";;

			--without-xaudio2)            with_xaudio2="0";;

			--with-xaudio2=*)             with_xaudio2="$optarg";;

	if [ "$with_xaudio2" != "0" ]; then

		if [ "$os" != "MINGW" ] && [ "$os" != "CYGWIN" ]; then

			if [ "$with_xaudio2" != "1" ]; then

				log 1 "configure: error: xaudio2 is only supported on Win32 targets"

				exit 1

			fi

			with_xaudio2="0"

			log 1 "checking xaudio2... not Windows, skipping"

		else

			check_xaudio2

		fi

	fi

	if [ "$with_xaudio2" != "0" ]; then

		CFLAGS="$CFLAGS -DWITH_XAUDIO2"

	fi

check_xaudio2() {

	echo "

		#include <windows.h>

		#undef NTDDI_VERSION

		#undef _WIN32_WINNT

		#define NTDDI_VERSION    NTDDI_WIN8

		#define _WIN32_WINNT	 _WIN32_WINNT_WIN8

		#include <xaudio2.h>

		int main(int argc, char *argv[]) { }" > xaudio2.test.c

	$cxx_host $CFLAGS xaudio2.test.c -o xaudio2.test 2> /dev/null

	res=$?

	rm -f xaudio2.test.c xaudio2.test

	if [ "$res" != "0" ]; then

		if [ "$with_xaudio2" != "1" ]; then

			log 1 "configure: error: xaudio2 is not available on this system"

			exit 1

		fi

		with_xaudio2="0"

		log 1 "checking xaudio2... not found"

	else

		log 1 "checking xaudio2... found"

	fi

}

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;%(PreprocessorDefinitions)</PreprocessorDefinitions>

    <ClInclude Include="..\src\sound\xaudio2_s.h" />

    <ClCompile Include="..\src\sound\xaudio2_s.cpp" />

    <ClInclude Include="..\src\sound\xaudio2_s.h">

      <Filter>Header Files</Filter>

    </ClInclude>

    <ClCompile Include="..\src\sound\xaudio2_s.cpp">

      <Filter>Sound</Filter>

    </ClCompile>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;%(PreprocessorDefinitions)</PreprocessorDefinitions>

    <ClInclude Include="..\src\sound\xaudio2_s.h" />

    <ClCompile Include="..\src\sound\xaudio2_s.cpp" />

    <ClInclude Include="..\src\sound\xaudio2_s.h">

      <Filter>Header Files</Filter>

    </ClInclude>

    <ClCompile Include="..\src\sound\xaudio2_s.cpp">

      <Filter>Sound</Filter>

    </ClCompile>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;%(PreprocessorDefinitions)</PreprocessorDefinitions>

    <ClInclude Include="..\src\sound\xaudio2_s.h" />

    <ClCompile Include="..\src\sound\xaudio2_s.cpp" />

    <ClInclude Include="..\src\sound\xaudio2_s.h">

      <Filter>Header Files</Filter>

    </ClInclude>

    <ClCompile Include="..\src\sound\xaudio2_s.cpp">

      <Filter>Sound</Filter>

    </ClCompile>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WIN32_ENABLE_DIRECTMUSIC_SUPPORT;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;WITH_ASSERT;%(PreprocessorDefinitions)</PreprocessorDefinitions>

      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;WITH_XAUDIO2;WITH_SSE;WITH_ZLIB;WITH_LZO;WITH_LZMA;LZMA_API_STATIC;WITH_PNG;WITH_FREETYPE;WITH_ICU_SORT;WITH_ICU_LAYOUT;U_STATIC_IMPLEMENTATION;ENABLE_NETWORK;WITH_PERSONAL_DIR;PERSONAL_DIR="OpenTTD";_SQ64;%(PreprocessorDefinitions)</PreprocessorDefinitions>

				RelativePath=".\..\src\sound\xaudio2_s.h"

				>

			</File>

			<File

			<File

				RelativePath=".\..\src\sound\xaudio2_s.cpp"

				>

			</File>

				RelativePath=".\..\src\sound\xaudio2_s.h"

				>

			</File>

			<File

			<File

				RelativePath=".\..\src\sound\xaudio2_s.cpp"

				>

			</File>

sound/xaudio2_s.h

	sound/xaudio2_s.cpp

	FSoundDriver_Win32() : DriverFactoryBase(Driver::DT_SOUND, 9, "win32", "Win32 WaveOut Sound Driver") {}

/* $Id$ */

/*

 * This file is part of OpenTTD.

 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.

 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.

 */

/** @file xaudio2_s.cpp XAudio2 sound driver. */

#ifdef WITH_XAUDIO2

#include "../stdafx.h"

#include "../openttd.h"

#include "../driver.h"

#include "../mixer.h"

#include "../debug.h"

#include "../core/alloc_func.hpp"

#include "../core/bitmath_func.hpp"

#include "../core/math_func.hpp"

// Windows 8 SDK required for XAudio2

#undef NTDDI_VERSION

#undef _WIN32_WINNT

#define NTDDI_VERSION    NTDDI_WIN8

#define _WIN32_WINNT     _WIN32_WINNT_WIN8

#include "xaudio2_s.h"

#include <windows.h>

#include <mmsystem.h>

#include <wrl\client.h>

#include <xaudio2.h>

using Microsoft::WRL::ComPtr;

#include "../os/windows/win32.h"

#include "../safeguards.h"

// Definition of the "XAudio2Create" call used to initialise XAudio2

typedef HRESULT(__stdcall *API_XAudio2Create)(_Outptr_ IXAudio2** ppXAudio2, UINT32 Flags, XAUDIO2_PROCESSOR XAudio2Processor);

static FSoundDriver_XAudio2 iFSoundDriver_XAudio2;

/**

* Implementation of the IXAudio2VoiceCallback interface.

* Provides buffered audio to XAudio2 from the OpenTTD mixer.

*/

class StreamingVoiceContext : public IXAudio2VoiceCallback

{

private:

	int bufferLength;

	char *buffer;

public:

	IXAudio2SourceVoice* SourceVoice;

	StreamingVoiceContext(int bufferLength)

	{

		this->bufferLength = bufferLength;

		this->buffer = MallocT<char>(bufferLength);

	}

	virtual ~StreamingVoiceContext()

	{

		free(this->buffer);

	}

	HRESULT SubmitBuffer()

	{

		// Ensure we do have a valid voice

		if (this->SourceVoice == nullptr)

		{

			return E_FAIL;

		}

		MxMixSamples(this->buffer, this->bufferLength / 4);

		XAUDIO2_BUFFER buf = { 0 };

		buf.AudioBytes = this->bufferLength;

		buf.pAudioData = (const BYTE *) this->buffer;

		return SourceVoice->SubmitSourceBuffer(&buf);

	}

	STDMETHOD_(void, OnVoiceProcessingPassStart)(UINT32) override

	{

	}

	STDMETHOD_(void, OnVoiceProcessingPassEnd)() override

	{

	}

	STDMETHOD_(void, OnStreamEnd)() override

	{

	}

	STDMETHOD_(void, OnBufferStart)(void*) override

	{

	}

	STDMETHOD_(void, OnBufferEnd)(void*) override

	{

		SubmitBuffer();

	}

	STDMETHOD_(void, OnLoopEnd)(void*) override

	{

	}

	STDMETHOD_(void, OnVoiceError)(void*, HRESULT) override

	{

	}

};

static HMODULE _xaudio_dll_handle;

static IXAudio2SourceVoice* _source_voice = nullptr;

static IXAudio2MasteringVoice* _mastering_voice = nullptr;

static ComPtr<IXAudio2> _xaudio2;

static StreamingVoiceContext* _voice_context = nullptr;

/**

* Initialises the XAudio2 driver.

*

* @param parm Driver parameters.

* @return An error message if unsuccessful, or NULL otherwise.

*

*/

const char *SoundDriver_XAudio2::Start(const char * const *parm)

{

	HRESULT hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED);

	if (FAILED(hr))

	{

		DEBUG(driver, 0, "xaudio2_s: CoInitializeEx failed (%08x)", hr);

		return "Failed to initialise COM";

	}

	_xaudio_dll_handle = LoadLibraryA(XAUDIO2_DLL_A);

	if (_xaudio_dll_handle == NULL)

	{

		CoUninitialize();

		DEBUG(driver, 0, "xaudio2_s: Unable to load " XAUDIO2_DLL_A);

		return "Failed to load XAudio2 DLL";

	}

	API_XAudio2Create xAudio2Create = (API_XAudio2Create) GetProcAddress(_xaudio_dll_handle, "XAudio2Create");

	if (xAudio2Create == NULL)

	{

		FreeLibrary(_xaudio_dll_handle);

		CoUninitialize();

		DEBUG(driver, 0, "xaudio2_s: Unable to find XAudio2Create function in DLL");

		return "Failed to load XAudio2 DLL";

	}

	// Create the XAudio engine

	UINT32 flags = 0;

	hr = xAudio2Create(_xaudio2.GetAddressOf(), flags, XAUDIO2_DEFAULT_PROCESSOR);

	if (FAILED(hr))

	{

		FreeLibrary(_xaudio_dll_handle);

		CoUninitialize();

		DEBUG(driver, 0, "xaudio2_s: XAudio2Create failed (%08x)", hr);

		return "Failed to inititialise the XAudio2 engine";

	}

	// Create a mastering voice

	hr = _xaudio2->CreateMasteringVoice(&_mastering_voice);

	if (FAILED(hr))

	{

		_xaudio2.Reset();

		FreeLibrary(_xaudio_dll_handle);

		CoUninitialize();

		DEBUG(driver, 0, "xaudio2_s: CreateMasteringVoice failed (%08x)", hr);

		return "Failed to create a mastering voice";

	}

	// Create a source voice to stream our audio

	WAVEFORMATEX wfex;

	wfex.wFormatTag = WAVE_FORMAT_PCM;

	wfex.nChannels = 2;

	wfex.wBitsPerSample = 16;

	wfex.nSamplesPerSec = GetDriverParamInt(parm, "hz", 44100);

	wfex.nBlockAlign = (wfex.nChannels * wfex.wBitsPerSample) / 8;

	wfex.nAvgBytesPerSec = wfex.nSamplesPerSec * wfex.nBlockAlign;

	// Limit buffer size to prevent overflows

	int bufsize = GetDriverParamInt(parm, "bufsize", 8192);

	bufsize = min(bufsize, UINT16_MAX);

	_voice_context = new StreamingVoiceContext(bufsize * 4);

	if (_voice_context == nullptr)

	{

		_mastering_voice->DestroyVoice();

		_xaudio2.Reset();

		FreeLibrary(_xaudio_dll_handle);

		CoUninitialize();

		return "Failed to create streaming voice context";

	}

	hr = _xaudio2->CreateSourceVoice(&_source_voice, &wfex, 0, 1.0f, _voice_context);

	if (FAILED(hr))

	{

		_mastering_voice->DestroyVoice();

		_xaudio2.Reset();

		FreeLibrary(_xaudio_dll_handle);

		CoUninitialize();

		DEBUG(driver, 0, "xaudio2_s: CreateSourceVoice failed (%08x)", hr);

		return "Failed to create a source voice";

	}

	_voice_context->SourceVoice = _source_voice;

	hr = _source_voice->Start(0, 0);

	if (FAILED(hr))

	{

		DEBUG(driver, 0, "xaudio2_s: _source_voice->Start failed (%08x)", hr);

		Stop();

		return "Failed to start the source voice";

	}

	MxInitialize(wfex.nSamplesPerSec);

	// Submit the first buffer

	hr = _voice_context->SubmitBuffer();

	if (FAILED(hr))

	{

		DEBUG(driver, 0, "xaudio2_s: _voice_context->SubmitBuffer failed (%08x)", hr);

		Stop();

		return "Failed to submit the first audio buffer";

	}

	return NULL;

}

/**

* Terminates the XAudio2 driver.

*/

void SoundDriver_XAudio2::Stop()

{

	// Clean up XAudio2

	_source_voice->DestroyVoice();

	delete _voice_context;

	_voice_context = nullptr;

	_mastering_voice->DestroyVoice();

	_xaudio2.Reset();

	FreeLibrary(_xaudio_dll_handle);

	CoUninitialize();

}

#endif

/* $Id$ */

/*

 * This file is part of OpenTTD.

 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.

 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.

 */

/** @file xaudio2_s.h Base for XAudio2 sound handling. */

#ifndef SOUND_XAUDIO2_H

#define SOUND_XAUDIO2_H

#include "sound_driver.hpp"

/** Implementation of the XAudio2 sound driver. */