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Location: cpp/openttd-patchpack/source/src/sound/xaudio2_s.cpp
r23640:bf5f48730ba3
6.3 KiB
text/x-c
Fix: Replace int with std::underlying_type in DECLARE_ENUM_AS_BIT_SET.
This fixes 64 bit uses of this macro.
This fixes 64 bit uses of this macro.
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/*
* 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 nullptr 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 == nullptr)
{
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 == nullptr)
{
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 nullptr;
}
/**
* 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
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