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

2025-12-14 03:59:36 +00:00 · 2019-12-11 00:51:42 -05:00
parent b1e8e11a56
commit e368cf7235
141 changed files with 8996 additions and 1117 deletions
--- a/GpAudioDriver_XAudio2/GpAudioChannelXAudio2.cpp
+++ b/GpAudioDriver_XAudio2/GpAudioChannelXAudio2.cpp
@@ -0,0 +1,108 @@
+#include "GpAudioChannelXAudio2.h"
+#include "GpAudioDriverXAudio2.h"
+#include "IGpAudioChannelCallbacks.h"
+
+#include <stdlib.h>
+#include <new>
+
+GpAudioChannelXAudio2 *GpAudioChannelXAudio2::Create(GpAudioDriverXAudio2 *driver)
+{
+	void *storage = malloc(sizeof(GpAudioChannelXAudio2));
+	if (!storage)
+		return nullptr;
+
+	GpAudioChannelXAudio2 *channel = new (storage) GpAudioChannelXAudio2(driver);
+	if (!channel->Init())
+	{
+		channel->Destroy();
+		return nullptr;
+	}
+
+	return channel;
+}
+
+bool GpAudioChannelXAudio2::Init()
+{
+	const unsigned int sampleRate = m_driver->GetRealSampleRate();
+	IXAudio2 *const xa2 = m_driver->GetXA2();
+
+	WAVEFORMATEX format;
+	ZeroMemory(&format, sizeof(format));
+
+	format.wFormatTag = WAVE_FORMAT_PCM;
+	format.nChannels = 1;
+	format.nSamplesPerSec = sampleRate;
+	format.wBitsPerSample = 8;
+	format.nBlockAlign = format.nChannels * format.wBitsPerSample / 8;
+	format.nAvgBytesPerSec = format.nBlockAlign * format.nSamplesPerSec;
+
+	XAUDIO2_SEND_DESCRIPTOR sendsList[1];
+	sendsList[0].Flags = 0;
+	sendsList[0].pOutputVoice = m_driver->GetMasteringVoice();
+
+	XAUDIO2_VOICE_SENDS sends;
+	sends.pSends = sendsList;
+	sends.SendCount = sizeof(sendsList) / sizeof(sendsList[0]);
+
+	XAUDIO2_VOICE_DETAILS dets;
+	m_driver->GetMasteringVoice()->GetVoiceDetails(&dets);
+
+	HRESULT hr = xa2->CreateSourceVoice(&m_sourceVoice, &format, XAUDIO2_VOICE_NOPITCH | XAUDIO2_VOICE_NOSRC, 1.0f, &m_xAudioCallbacks, nullptr, nullptr);
+	if (hr != S_OK)
+		return false;
+
+	return true;
+}
+
+void GpAudioChannelXAudio2::SetAudioChannelContext(IGpAudioChannelCallbacks *callbacks)
+{
+	m_contextCallbacks = callbacks;
+}
+
+void GpAudioChannelXAudio2::PostBuffer(const void *buffer, size_t bufferSize)
+{
+	XAUDIO2_BUFFER xa2Buffer;
+	xa2Buffer.Flags = 0;
+	xa2Buffer.AudioBytes = static_cast<UINT32>(bufferSize);
+	xa2Buffer.pAudioData = static_cast<const BYTE*>(buffer);
+	xa2Buffer.PlayBegin = 0;
+	xa2Buffer.PlayLength = 0;
+	xa2Buffer.LoopBegin = 0;
+	xa2Buffer.LoopLength = 0;
+	xa2Buffer.LoopCount = 0;
+	xa2Buffer.pContext = nullptr;
+
+	m_sourceVoice->SubmitSourceBuffer(&xa2Buffer, nullptr);
+	if (m_voiceState == VoiceState_Idle)
+	{
+		m_voiceState = VoiceState_Active;
+		m_sourceVoice->Start(0, 0);
+	}
+}
+
+void GpAudioChannelXAudio2::Destroy()
+{
+	this->~GpAudioChannelXAudio2();
+	free(this);
+}
+
+void GpAudioChannelXAudio2::OnBufferEnd()
+{
+	if (m_contextCallbacks)
+		m_contextCallbacks->NotifyBufferFinished();
+}
+
+GpAudioChannelXAudio2::GpAudioChannelXAudio2(GpAudioDriverXAudio2 *driver)
+	: m_driver(driver)
+	, m_xAudioCallbacks(this)
+	, m_sourceVoice(nullptr)
+	, m_contextCallbacks(nullptr)
+	, m_voiceState(VoiceState_Idle)
+{
+}
+
+GpAudioChannelXAudio2::~GpAudioChannelXAudio2()
+{
+	if (m_sourceVoice)
+		m_sourceVoice->DestroyVoice();
+}
--- a/GpAudioDriver_XAudio2/GpAudioChannelXAudio2.h
+++ b/GpAudioDriver_XAudio2/GpAudioChannelXAudio2.h
@@ -0,0 +1,42 @@
+#pragma once
+
+#include "IGpAudioChannel.h"
+
+#include "GpAudioChannelXAudio2Callbacks.h"
+
+class GpAudioDriverXAudio2;
+class GpAudioChannelXAudio2Callbacks;
+struct IXAudio2SourceVoice;
+
+class GpAudioChannelXAudio2 final : public IGpAudioChannel
+{
+public:
+	friend class GpAudioChannelXAudio2Callbacks;
+
+	static GpAudioChannelXAudio2 *Create(GpAudioDriverXAudio2 *driver);
+
+	void SetAudioChannelContext(IGpAudioChannelCallbacks *callbacks);
+	void PostBuffer(const void *buffer, size_t bufferSize);
+	void Destroy() override;
+
+	bool Init();
+
+protected:
+	void OnBufferEnd();
+
+private:
+	enum VoiceState
+	{
+		VoiceState_Idle,
+		VoiceState_Active,
+	};
+
+	explicit GpAudioChannelXAudio2(GpAudioDriverXAudio2 *driver);
+	~GpAudioChannelXAudio2();
+
+	GpAudioDriverXAudio2 *m_driver;
+	IXAudio2SourceVoice *m_sourceVoice;
+	GpAudioChannelXAudio2Callbacks m_xAudioCallbacks;
+	IGpAudioChannelCallbacks *m_contextCallbacks;
+	VoiceState m_voiceState;
+};
--- a/GpAudioDriver_XAudio2/GpAudioChannelXAudio2Callbacks.cpp
+++ b/GpAudioDriver_XAudio2/GpAudioChannelXAudio2Callbacks.cpp
@@ -0,0 +1,36 @@
+#include "GpAudioChannelXAudio2Callbacks.h"
+#include "GpAudioChannelXAudio2.h"
+
+GpAudioChannelXAudio2Callbacks::GpAudioChannelXAudio2Callbacks(GpAudioChannelXAudio2 *owner)
+	: m_owner(owner)
+{
+}
+
+void GpAudioChannelXAudio2Callbacks::OnVoiceProcessingPassStart(UINT32 BytesRequired)
+{
+}
+
+void GpAudioChannelXAudio2Callbacks::OnVoiceProcessingPassEnd()
+{
+}
+
+void GpAudioChannelXAudio2Callbacks::OnStreamEnd()
+{
+}
+
+void GpAudioChannelXAudio2Callbacks::OnBufferStart(void* pBufferContext)
+{
+}
+
+void GpAudioChannelXAudio2Callbacks::OnBufferEnd(void* pBufferContext)
+{
+	m_owner->OnBufferEnd();
+}
+
+void GpAudioChannelXAudio2Callbacks::OnLoopEnd(void* pBufferContext)
+{
+}
+
+void GpAudioChannelXAudio2Callbacks::OnVoiceError(void* pBufferContext, HRESULT Error)
+{
+}
--- a/GpAudioDriver_XAudio2/GpAudioChannelXAudio2Callbacks.h
+++ b/GpAudioDriver_XAudio2/GpAudioChannelXAudio2Callbacks.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <xaudio2.h>
+
+class GpAudioChannelXAudio2;
+
+class GpAudioChannelXAudio2Callbacks final : public IXAudio2VoiceCallback
+{
+public:
+	explicit GpAudioChannelXAudio2Callbacks(GpAudioChannelXAudio2 *owner);
+
+	void OnVoiceProcessingPassStart(UINT32 BytesRequired) override;
+	void OnVoiceProcessingPassEnd() override;
+	void OnStreamEnd() override;
+	void OnBufferStart(void* pBufferContext) override;
+	void OnBufferEnd(void* pBufferContext) override;
+	void OnLoopEnd(void* pBufferContext) override;
+	void OnVoiceError(void* pBufferContext, HRESULT Error) override;
+
+private:
+	GpAudioChannelXAudio2 *m_owner;
+};
--- a/GpAudioDriver_XAudio2/GpAudioDriverFactoryXAudio2.cpp
+++ b/GpAudioDriver_XAudio2/GpAudioDriverFactoryXAudio2.cpp
@@ -0,0 +1,13 @@
+#include "GpAudioDriverFactoryXAudio2.h"
+#include "GpAudioDriverXAudio2.h"
+
+IGpAudioDriver *GpAudioDriverFactoryXAudio2::Create(const GpAudioDriverProperties &properties)
+{
+	return GpAudioDriverXAudio2::Create(properties);
+}
+
+
+extern "C" __declspec(dllexport) IGpAudioDriver *GpDriver_CreateAudioDriver_XAudio2(const GpAudioDriverProperties &properties)
+{
+	return GpAudioDriverFactoryXAudio2::Create(properties);
+}
--- a/GpAudioDriver_XAudio2/GpAudioDriverFactoryXAudio2.h
+++ b/GpAudioDriver_XAudio2/GpAudioDriverFactoryXAudio2.h
@@ -0,0 +1,10 @@
+#pragma once
+
+class IGpAudioDriver;
+struct GpAudioDriverProperties;
+
+class GpAudioDriverFactoryXAudio2
+{
+public:
+	static IGpAudioDriver *Create(const GpAudioDriverProperties &properties);
+};
--- a/GpAudioDriver_XAudio2/GpAudioDriverXAudio2.cpp
+++ b/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();
+}
--- a/GpAudioDriver_XAudio2/GpAudioDriverXAudio2.h
+++ b/GpAudioDriver_XAudio2/GpAudioDriverXAudio2.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "IGpAudioDriver.h"
+#include "GpCoreDefs.h"
+#include "GpAudioDriverProperties.h"
+
+struct IXAudio2;
+struct IXAudio2MasteringVoice;
+
+class GpAudioDriverXAudio2 : public IGpAudioDriver
+{
+public:
+	IGpAudioChannel *CreateChannel() override;
+	void Shutdown() override;
+
+	const GpAudioDriverProperties &GetProperties() const;
+	IXAudio2 *GetXA2() const;
+	IXAudio2MasteringVoice *GetMasteringVoice() const;
+	unsigned int GetRealSampleRate() const;
+
+	static GpAudioDriverXAudio2 *Create(const GpAudioDriverProperties &properties);
+
+private:
+	GpAudioDriverXAudio2(const GpAudioDriverProperties &properties, unsigned int realSampleRate, IXAudio2* xa2, IXAudio2MasteringVoice *mv);
+	~GpAudioDriverXAudio2();
+
+	GpAudioDriverProperties m_properties;
+
+	IXAudio2* m_xa2;
+	IXAudio2MasteringVoice *m_mv;
+	unsigned int m_realSampleRate;
+};
--- a/GpAudioDriver_XAudio2/GpAudioDriver_XAudio2.vcxproj
+++ b/GpAudioDriver_XAudio2/GpAudioDriver_XAudio2.vcxproj
@@ -0,0 +1,136 @@
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+    <ClInclude Include="GpAudioDriverXAudio2.h" />
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