m_Do_Reset: OK (#35)

* m_Do_Reset: split and (some) decomp

decompiles:
- my_OSCancelAlarmAll()
- destroyVideo()

* mDoRst::reset(): decompile, plus some supporting code

* split DVD* functions to dvd.h

* mDoRst::resetCallBack(): decompile

include/dvd/dvd.h

@@ -0,0 +1,44 @@
+#ifndef __DVD_H__
+#define __DVD_H__
+
+extern "C" {
+
+typedef enum DVDState {
+    DVD_STATE_END           = 0x0,
+    DVD_STATE_BUSY          = 0x1,
+    DVD_STATE_WAITING       = 0x2,
+    DVD_STATE_COVER_CLOSED  = 0x3,
+    DVD_STATE_NO_DISK       = 0x4,
+    DVD_STATE_COVER_OPEN    = 0x5,
+    DVD_STATE_WRONG_DISK    = 0x6,
+    DVD_STATE_MOTOR_STOPPED = 0x7,
+    DVD_STATE_IGNORED       = 0x8,
+    DVD_STATE_CANCELED      = 0xa, // lmao they skipped 9
+    DVD_STATE_RETRY         = 0xb,
+    DVD_STATE_FATAL_ERROR   = -1,
+    __DVD_STATE_ENUM_FORCE_S32 = INT32_MAX,
+} DVDState;
+}
+
+class DVDFileInfo;
+extern "C" {
+    s32 DVDOpen(const char*, u8[48]);
+    s32 DVDClose(u8[48]);
+    void DVDReadPrio(void);
+    void DVDGetCurrentDiskID(void);
+    s32 DVDFastOpen(long, u8[48]);
+    int DVDGetCommandBlockStatus(u8[48]);
+    s32 DVDReadAsyncPrio(u8[48], void*, long, long, void(*)(long,DVDFileInfo*), long);
+    void DVDConvertPathToEntrynum(void);
+    DVDState DVDGetDriveStatus(void);
+    s32 DVDCheckDisk(void);
+
+    void DVDChangeDir(void);
+    void DVDCloseDir(void);
+    void DVDOpenDir(void);
+    void DVDReadDir(void);
+
+}
+
+
+#endif