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/kernel/xboxkrnl/xboxkrnl_video.h

@@ -0,0 +1,57 @@
+/**
+ ******************************************************************************
+ * 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_KERNEL_XBOXKRNL_VIDEO_H_
+#define XENIA_KERNEL_XBOXKRNL_VIDEO_H_
+
+#include <xenia/common.h>
+#include <xenia/core.h>
+
+#include <xenia/xbox.h>
+
+
+namespace xe {
+namespace kernel {
+namespace xboxkrnl {
+
+
+// http://ffplay360.googlecode.com/svn/trunk/Common/XTLOnPC.h
+#pragma pack(push, 1)
+typedef struct {
+    uint32_t display_width;
+    uint32_t display_height;
+    uint32_t is_interlaced;
+    uint32_t is_widescreen;
+    uint32_t is_hi_def;
+    float    refresh_rate;
+    uint32_t video_standard;
+    uint32_t unknown_0x8a;
+    uint32_t unknown_0x01;
+    uint32_t reserved[3];
+}
+X_VIDEO_MODE;
+#pragma pack(pop)
+XEASSERTSTRUCTSIZE(X_VIDEO_MODE, 48);
+
+void xeVdGetCurrentDisplayGamma(uint32_t* arg0, float* arg1);
+uint32_t xeVdQueryVideoFlags();
+void xeVdQueryVideoMode(X_VIDEO_MODE *video_mode, bool swap);
+
+void xeVdInitializeEngines(uint32_t unk0, uint32_t callback, uint32_t unk1,
+                           uint32_t unk2_ptr, uint32_t unk3_ptr);
+void xeVdSetGraphicsInterruptCallback(uint32_t callback, uint32_t user_data);
+void xeVdEnableRingBufferRPtrWriteBack(uint32_t ptr, uint32_t block_size);
+
+
+}  // namespace xboxkrnl
+}  // namespace kernel
+}  // namespace xe
+
+
+#endif  // XENIA_KERNEL_XBOXKRNL_VIDEO_H_