Massive refactoring of all code + audio skeleton.

This should make it easier to find files and (in the future) split things
up into separate libraries.
It also changes around emulator initialization to make it a little more
difficult to do things out of order and a little more sensible as to when
real init work happens.
Also adding a skeleton audio system/driver and reworking CPU register
access to be more extensible.

src/xenia/apu/nop/nop_apu-private.h

@@ -0,0 +1,31 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_APU_NOP_NOP_APU_PRIVATE_H_
+#define XENIA_APU_NOP_NOP_APU_PRIVATE_H_
+
+#include <xenia/core.h>
+
+#include <xenia/apu/nop/nop_apu.h>
+
+
+namespace xe {
+namespace apu {
+namespace nop {
+
+
+
+
+
+}  // namespace nop
+}  // namespace apu
+}  // namespace xe
+
+
+#endif  // XENIA_APU_NOP_NOP_APU_PRIVATE_H_

src/xenia/apu/nop/nop_apu.cc

@@ -0,0 +1,44 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/apu/nop/nop_apu.h>
+
+#include <xenia/apu/nop/nop_audio_system.h>
+
+
+using namespace xe;
+using namespace xe::apu;
+using namespace xe::apu::nop;
+
+
+namespace {
+  void InitializeIfNeeded();
+  void CleanupOnShutdown();
+
+  void InitializeIfNeeded() {
+    static bool has_initialized = false;
+    if (has_initialized) {
+      return;
+    }
+    has_initialized = true;
+
+    //
+
+    atexit(CleanupOnShutdown);
+  }
+
+  void CleanupOnShutdown() {
+  }
+}
+
+
+AudioSystem* xe::apu::nop::Create(Emulator* emulator) {
+  InitializeIfNeeded();
+  return new NopAudioSystem(emulator);
+}

src/xenia/apu/nop/nop_apu.h

@@ -0,0 +1,33 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_GPU_NOP_NOP_H_
+#define XENIA_GPU_NOP_NOP_H_
+
+#include <xenia/core.h>
+
+
+XEDECLARECLASS1(xe, Emulator);
+XEDECLARECLASS2(xe, apu, AudioSystem);
+
+
+namespace xe {
+namespace apu {
+namespace nop {
+
+
+AudioSystem* Create(Emulator* emulator);
+
+
+}  // namespace nop
+}  // namespace apu
+}  // namespace xe
+
+
+#endif  // XENIA_GPU_NOP_NOP_H_

src/xenia/apu/nop/nop_audio_driver.cc

@@ -0,0 +1,28 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/apu/nop/nop_audio_driver.h>
+
+#include <xenia/apu/apu-private.h>
+
+
+using namespace xe;
+using namespace xe::apu;
+using namespace xe::apu::nop;
+
+
+NopAudioDriver::NopAudioDriver(xe_memory_ref memory) :
+    AudioDriver(memory) {
+}
+
+NopAudioDriver::~NopAudioDriver() {
+}
+
+void NopAudioDriver::Initialize() {
+}

src/xenia/apu/nop/nop_audio_driver.h

@@ -0,0 +1,40 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_APU_NOP_NOP_AUDIO_DRIVER_H_
+#define XENIA_APU_NOP_NOP_AUDIO_DRIVER_H_
+
+#include <xenia/core.h>
+
+#include <xenia/apu/audio_driver.h>
+#include <xenia/apu/nop/nop_apu-private.h>
+
+
+namespace xe {
+namespace apu {
+namespace nop {
+
+
+class NopAudioDriver : public AudioDriver {
+public:
+  NopAudioDriver(xe_memory_ref memory);
+  virtual ~NopAudioDriver();
+
+  virtual void Initialize();
+
+protected:
+};
+
+
+}  // namespace nop
+}  // namespace apu
+}  // namespace xe
+
+
+#endif  // XENIA_APU_NOP_NOP_AUDIO_DRIVER_H_

src/xenia/apu/nop/nop_audio_system.cc

@@ -0,0 +1,40 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#include <xenia/apu/nop/nop_audio_system.h>
+
+#include <xenia/apu/apu-private.h>
+#include <xenia/apu/nop/nop_audio_driver.h>
+
+
+using namespace xe;
+using namespace xe::apu;
+using namespace xe::apu::nop;
+
+
+NopAudioSystem::NopAudioSystem(Emulator* emulator) :
+    AudioSystem(emulator) {
+}
+
+NopAudioSystem::~NopAudioSystem() {
+}
+
+void NopAudioSystem::Initialize() {
+  AudioSystem::Initialize();
+
+  XEASSERTNULL(driver_);
+  driver_ = new NopAudioDriver(memory_);
+}
+
+void NopAudioSystem::Pump() {
+}
+
+void NopAudioSystem::Shutdown() {
+  AudioSystem::Shutdown();
+}

src/xenia/apu/nop/nop_audio_system.h

@@ -0,0 +1,43 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef XENIA_APU_NOP_NOP_AUDIO_SYSTEM_H_
+#define XENIA_APU_NOP_NOP_AUDIO_SYSTEM_H_
+
+#include <xenia/core.h>
+
+#include <xenia/apu/audio_system.h>
+#include <xenia/apu/nop/nop_apu-private.h>
+
+
+namespace xe {
+namespace apu {
+namespace nop {
+
+
+class NopAudioSystem : public AudioSystem {
+public:
+  NopAudioSystem(Emulator* emulator);
+  virtual ~NopAudioSystem();
+
+protected:
+  virtual void Initialize();
+  virtual void Pump();
+  virtual void Shutdown();
+
+private:
+};
+
+
+}  // namespace nop
+}  // namespace apu
+}  // namespace xe
+
+
+#endif  // XENIA_APU_NOP_NOP_AUDIO_SYSTEM_H_

src/xenia/apu/nop/sources.gypi

@@ -0,0 +1,12 @@
+# Copyright 2013 Ben Vanik. All Rights Reserved.
+{
+  'sources': [
+    'nop_apu-private.h',
+    'nop_apu.cc',
+    'nop_apu.h',
+    'nop_audio_driver.cc',
+    'nop_audio_driver.h',
+    'nop_audio_system.cc',
+    'nop_audio_system.h',
+  ],
+}