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Added XAudio2 backend.

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Windows audio backend with lower latency.

Audio never glitches on my machine but the number of buffers may be set too aggressively. If you run into problems try turning up NUM_BUFFERS in the h file and leave some feedback.

From my tests games seem to prefer filling the buffer with smaller chunks. For this to work the callback that fills the buffer needs to either spin or run async so I went with async.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6371 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
mylek4
2010-11-10 08:28:26 +00:00
parent 6ece147568
commit 1991a4f3a5
7 changed files with 322 additions and 8 deletions
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5
Source/Core/AudioCommon/Src/AudioCommon.cpp
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@ -19,6 +19,7 @@
#include "Mixer.h"
#include "NullSoundStream.h"
#include "DSoundStream.h"
#include "XAudio2Stream.h"
#include "AOSoundStream.h"
#include "AlsaSoundStream.h"
#ifdef __APPLE__
@ -42,6 +43,8 @@ namespace AudioCommon
soundStream = new NullSound(mixer, g_dspInitialize.hWnd);
else if (backend == BACKEND_DIRECTSOUND && DSound::isValid())
soundStream = new DSound(mixer, g_dspInitialize.hWnd);
else if (backend == BACKEND_XAUDIO2 && XAudio2::isValid())
soundStream = new XAudio2(mixer);
else if (backend == BACKEND_AOSOUND && AOSound::isValid())
soundStream = new AOSound(mixer);
else if (backend == BACKEND_ALSA && AlsaSound::isValid())
@ -98,6 +101,8 @@ namespace AudioCommon
backends.push_back(BACKEND_NULLSOUND);
if (DSound::isValid())
backends.push_back(BACKEND_DIRECTSOUND);
if (XAudio2::isValid())
backends.push_back(BACKEND_XAUDIO2);
if (OpenALStream::isValid())
backends.push_back(BACKEND_OPENAL);
if (AOSound::isValid())