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More dvdlow progress

This commit is contained in:
Phillip Stephens 2023-02-06 21:45:02 -08:00
parent 0ac742bdd8
commit cbc65dd810
1 changed files with 54 additions and 3 deletions
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57
src/Dolphin/dvd/dvdlow.c
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@ -1,6 +1,8 @@
#include "dolphin/DVDPriv.h"
#include "dolphin/os.h"
extern DVDDiskID* DVDGetCurrentDiskID();
extern OSTime __OSGetSystemTime();
vu32 __PIRegs[12] : 0xCC003000;
@ -13,9 +15,9 @@ static volatile OSTime LastResetEnd = 0;
static volatile u32 ResetOccurred = FALSE;
static volatile BOOL WaitingCoverClose = FALSE;
static BOOL Breaking = FALSE;
static u32 WorkAroundType = 0;
static volatile u32 WorkAroundType = 0;
static u32 WorkAroundSeekLocation = 0;
static OSTime LastReadFinished = 0;
static volatile OSTime LastReadFinished = 0;
static OSTime LastReadIssued = 0;
static volatile BOOL LastCommandWasRead = FALSE;
static vu32 NextCommandNumber = 0;
@ -247,10 +249,10 @@ static void SeekTwiceBeforeRead(void* addr, u32 length, u32 offset, DVDLowCallba
#pragma dont_inline reset
BOOL DVDLowRead(void* addr, u32 length, u32 offset, DVDLowCallback callback) {
__DIRegs[6] = length;
Curr.addr = addr;
Curr.length = length;
Curr.offset = offset;
__DIRegs[6] = length;
if (WorkAroundType == 0) {
DoJustRead(addr, length, offset, callback);
@ -258,7 +260,56 @@ BOOL DVDLowRead(void* addr, u32 length, u32 offset, DVDLowCallback callback) {
if (FirstRead) {
SeekTwiceBeforeRead(addr, length, offset, callback);
} else {
u32 curr2 = Curr.offset >> 15;
u32 prev1 = (Prev.offset + Prev.length - 1) >> 15;
DVDDiskID* id = DVDGetCurrentDiskID();
BOOL streaming = id->streaming ? TRUE : FALSE;
u32 val;
BOOL val2;
if (streaming) {
val = 5;
} else {
val = 15;
}
if (curr2 > prev1 - 2 || curr2 < prev1 + (val + 3)) {
val2 = TRUE;
} else {
val2 = FALSE;
}
if (!val2) {
CommandList[0].cmd = -1;
NextCommandNumber = 0;
Read(addr, length, offset, callback);
} else {
curr2 = Curr.offset >> 15;
prev1 = (Prev.offset + Prev.length - 1) >> 15;
if (curr2 == prev1 || curr2 + 1 == prev1) {
OSTime diff = __OSGetSystemTime() - LastReadFinished;
OSTime five_ms = (OSTime)OSMillisecondsToTicks(5);
if (diff < five_ms) {
CommandList[0].cmd = -1;
NextCommandNumber = 0;
Read(addr, length, offset, callback);
} else {
OSTime temp;
temp = diff - five_ms + OSMicrosecondsToTicks(500);
CommandList[0].cmd = 1;
CommandList[0].addr = addr;
CommandList[0].length = length;
CommandList[0].offset = offset;
CommandList[0].callback = callback;
CommandList[1].cmd = -1;
NextCommandNumber = 0;
OSCreateAlarm(&AlarmForWA);
OSSetAlarm(&AlarmForWA, temp, AlarmHandler);
}
} else {
SeekTwiceBeforeRead(addr, length, offset, callback);
}
}
}
}
return TRUE;