More work. Audio driver works enough to play music now.

GpAudioDriver_XAudio2/GpAudioDriverXAudio2.cpp

@@ -0,0 +1,84 @@
+#include "GpAudioDriverXAudio2.h"
+
+#include "GpAudioChannelXAudio2.h"
+
+#include <xaudio2.h>
+
+void GpAudioDriverXAudio2::Shutdown()
+{
+	delete this;
+}
+
+const GpAudioDriverProperties &GpAudioDriverXAudio2::GetProperties() const
+{
+	return m_properties;
+}
+
+IXAudio2 *GpAudioDriverXAudio2::GetXA2() const
+{
+	return m_xa2;
+}
+
+IXAudio2MasteringVoice *GpAudioDriverXAudio2::GetMasteringVoice() const
+{
+	return m_mv;
+}
+
+unsigned int GpAudioDriverXAudio2::GetRealSampleRate() const
+{
+	return m_realSampleRate;
+}
+
+GpAudioDriverXAudio2 *GpAudioDriverXAudio2::Create(const GpAudioDriverProperties &properties)
+{
+	IXAudio2 *xa = nullptr;
+	IXAudio2MasteringVoice *mv = nullptr;
+
+	const unsigned int realSampleRate = (properties.m_sampleRate + 50) / XAUDIO2_QUANTUM_DENOMINATOR * XAUDIO2_QUANTUM_DENOMINATOR;
+
+	if (CoInitializeEx(nullptr, COINIT_MULTITHREADED) != S_OK)
+	{
+		CoUninitialize();
+		return nullptr;
+	}
+
+	UINT flags = 0;
+	if (properties.m_debug)
+		flags |= XAUDIO2_DEBUG_ENGINE;
+
+	if (FAILED(XAudio2Create(&xa, flags, XAUDIO2_DEFAULT_PROCESSOR)))
+	{
+		CoUninitialize();
+		return nullptr;
+	}
+
+	if (FAILED(xa->CreateMasteringVoice(&mv, 2, realSampleRate, 0, nullptr, nullptr, AudioCategory_GameEffects)))
+	{
+		CoUninitialize();
+		xa->Release();
+		return nullptr;
+	}
+
+	return new GpAudioDriverXAudio2(properties, realSampleRate, xa, mv);
+}
+
+IGpAudioChannel *GpAudioDriverXAudio2::CreateChannel()
+{
+	return GpAudioChannelXAudio2::Create(this);
+}
+
+GpAudioDriverXAudio2::GpAudioDriverXAudio2(const GpAudioDriverProperties &properties, unsigned int realSampleRate, IXAudio2* xa2, IXAudio2MasteringVoice *mv)
+	: m_properties(properties)
+	, m_realSampleRate(realSampleRate)
+	, m_xa2(xa2)
+	, m_mv(mv)
+{
+}
+
+GpAudioDriverXAudio2::~GpAudioDriverXAudio2()
+{
+	m_mv->DestroyVoice();
+	m_xa2->Release();
+
+	CoUninitialize();
+}