mirror of
https://git.rip/DMCA_FUCKER/re3.git
synced 2024-11-10 20:29:15 +00:00
529 lines
11 KiB
C++
529 lines
11 KiB
C++
#include <windows.h>
|
|
#include "common.h"
|
|
#include "patcher.h"
|
|
#include "CdStream.h"
|
|
#include "rwcore.h"
|
|
#include "RwHelper.h"
|
|
|
|
#define CDDEBUG(f, ...) debug ("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
|
|
#define CDTRACE(f, ...) printf("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
|
|
|
|
struct CdReadInfo
|
|
{
|
|
uint32 nSectorOffset;
|
|
uint32 nSectorsToRead;
|
|
void *pBuffer;
|
|
char field_C;
|
|
bool bLocked;
|
|
bool bInUse;
|
|
char _pad0;
|
|
int32 nStatus;
|
|
HANDLE hSemaphore;
|
|
HANDLE hFile;
|
|
OVERLAPPED Overlapped;
|
|
};
|
|
VALIDATE_SIZE(CdReadInfo, 0x30);
|
|
|
|
char gCdImageNames[MAX_CDIMAGES+1][64];
|
|
int32 gNumImages;
|
|
int32 gNumChannels;
|
|
|
|
HANDLE gImgFiles[MAX_CDIMAGES];
|
|
|
|
HANDLE _gCdStreamThread;
|
|
HANDLE gCdStreamSema;
|
|
DWORD _gCdStreamThreadId;
|
|
|
|
CdReadInfo *gpReadInfo;
|
|
Queue gChannelRequestQ;
|
|
|
|
int32 lastPosnRead;
|
|
|
|
BOOL _gbCdStreamOverlapped;
|
|
BOOL _gbCdStreamAsync;
|
|
DWORD _gdwCdStreamFlags;
|
|
|
|
|
|
void
|
|
CdStreamInitThread(void)
|
|
{
|
|
SetLastError(0);
|
|
|
|
if ( gNumChannels > 0 )
|
|
{
|
|
for ( int32 i = 0; i < gNumChannels; i++ )
|
|
{
|
|
gpReadInfo[i].hSemaphore = CreateSemaphore(nil, 0, 2, nil);
|
|
|
|
if ( gpReadInfo[i].hSemaphore == nil )
|
|
{
|
|
CDTRACE("failed to create sync semaphore");
|
|
ASSERT(0);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
gChannelRequestQ.items = (int32 *)LocalAlloc(LMEM_ZEROINIT, sizeof(int32) * (gNumChannels + 1));
|
|
gChannelRequestQ.head = 0;
|
|
gChannelRequestQ.tail = 0;
|
|
gChannelRequestQ.size = gNumChannels + 1;
|
|
ASSERT(gChannelRequestQ.items != nil );
|
|
|
|
gCdStreamSema = CreateSemaphore(nil, 0, 5, "CdStream");
|
|
|
|
if ( gCdStreamSema == nil )
|
|
{
|
|
CDTRACE("failed to create stream semaphore");
|
|
ASSERT(0);
|
|
return;
|
|
}
|
|
|
|
_gCdStreamThread = CreateThread(nil, 64*1024/*64KB*/, CdStreamThread, nil, CREATE_SUSPENDED, &_gCdStreamThreadId);
|
|
|
|
if ( _gCdStreamThread == nil )
|
|
{
|
|
CDTRACE("failed to create streaming thread");
|
|
ASSERT(0);
|
|
return;
|
|
}
|
|
|
|
SetThreadPriority(_gCdStreamThread, GetThreadPriority(GetCurrentThread()) - 1);
|
|
|
|
ResumeThread(_gCdStreamThread);
|
|
}
|
|
|
|
void
|
|
CdStreamInit(int32 numChannels)
|
|
{
|
|
DWORD SectorsPerCluster;
|
|
DWORD BytesPerSector;
|
|
DWORD NumberOfFreeClusters;
|
|
DWORD TotalNumberOfClusters;
|
|
|
|
GetDiskFreeSpace(nil, &SectorsPerCluster, &BytesPerSector, &NumberOfFreeClusters, &TotalNumberOfClusters);
|
|
|
|
_gdwCdStreamFlags = 0;
|
|
|
|
if ( BytesPerSector <= CDSTREAM_SECTOR_SIZE )
|
|
{
|
|
_gdwCdStreamFlags |= FILE_FLAG_NO_BUFFERING;
|
|
debug("Using no buffered loading for streaming\n");
|
|
}
|
|
|
|
_gbCdStreamOverlapped = TRUE;
|
|
|
|
_gdwCdStreamFlags |= FILE_FLAG_OVERLAPPED;
|
|
|
|
_gbCdStreamAsync = FALSE;
|
|
|
|
void *pBuffer = (void *)RwMallocAlign(CDSTREAM_SECTOR_SIZE, BytesPerSector);
|
|
ASSERT( pBuffer != nil );
|
|
|
|
SetLastError(0);
|
|
|
|
gNumImages = 0;
|
|
|
|
gNumChannels = numChannels;
|
|
|
|
gpReadInfo = (CdReadInfo *)LocalAlloc(LMEM_ZEROINIT, sizeof(CdReadInfo) * numChannels);
|
|
ASSERT( gpReadInfo != nil );
|
|
|
|
CDDEBUG("read info %p", gpReadInfo);
|
|
|
|
CdStreamAddImage("MODELS\\GTA3.IMG");
|
|
|
|
int32 nStatus = CdStreamRead(0, pBuffer, 0, 1);
|
|
|
|
CdStreamRemoveImages();
|
|
|
|
if ( nStatus == STREAM_SUCCESS )
|
|
{
|
|
_gbCdStreamAsync = TRUE;
|
|
|
|
debug("Using async loading for streaming\n");
|
|
}
|
|
else
|
|
{
|
|
_gdwCdStreamFlags &= ~FILE_FLAG_OVERLAPPED;
|
|
|
|
_gbCdStreamOverlapped = FALSE;
|
|
|
|
_gbCdStreamAsync = TRUE;
|
|
|
|
debug("Using sync loading for streaming\n");
|
|
}
|
|
|
|
CdStreamInitThread();
|
|
|
|
ASSERT( pBuffer != nil );
|
|
RwFreeAlign(pBuffer);
|
|
}
|
|
|
|
uint32
|
|
GetGTA3ImgSize(void)
|
|
{
|
|
ASSERT( gImgFiles[0] != nil );
|
|
return (uint32)GetFileSize(gImgFiles[0], nil);
|
|
}
|
|
|
|
void
|
|
CdStreamShutdown(void)
|
|
{
|
|
if ( _gbCdStreamAsync )
|
|
{
|
|
LocalFree(gChannelRequestQ.items);
|
|
CloseHandle(gCdStreamSema);
|
|
CloseHandle(_gCdStreamThread);
|
|
|
|
for ( int32 i = 0; i < gNumChannels; i++ )
|
|
CloseHandle(gpReadInfo[i].hSemaphore);
|
|
}
|
|
|
|
LocalFree(gpReadInfo);
|
|
}
|
|
|
|
|
|
|
|
int32
|
|
CdStreamRead(int32 channel, void *buffer, uint32 offset, uint32 size)
|
|
{
|
|
ASSERT( channel < gNumChannels );
|
|
ASSERT( buffer != nil );
|
|
|
|
lastPosnRead = size + offset;
|
|
|
|
ASSERT( _GET_INDEX(offset) < MAX_CDIMAGES );
|
|
HANDLE hImage = gImgFiles[_GET_INDEX(offset)];
|
|
ASSERT( hImage != nil );
|
|
|
|
|
|
CdReadInfo *pChannel = &gpReadInfo[channel];
|
|
ASSERT( pChannel != nil );
|
|
|
|
pChannel->hFile = hImage;
|
|
|
|
SetLastError(0);
|
|
|
|
if ( _gbCdStreamAsync )
|
|
{
|
|
if ( pChannel->nSectorsToRead != 0 || pChannel->bInUse )
|
|
return STREAM_NONE;
|
|
|
|
pChannel->nStatus = STREAM_NONE;
|
|
pChannel->nSectorOffset = _GET_OFFSET(offset);
|
|
pChannel->nSectorsToRead = size;
|
|
pChannel->pBuffer = buffer;
|
|
pChannel->bLocked = 0;
|
|
|
|
AddToQueue(&gChannelRequestQ, channel);
|
|
|
|
if ( !ReleaseSemaphore(gCdStreamSema, 1, nil) )
|
|
printf("Signal Sema Error\n");
|
|
|
|
return STREAM_SUCCESS;
|
|
}
|
|
|
|
if ( _gbCdStreamOverlapped )
|
|
{
|
|
ASSERT( channel < gNumChannels );
|
|
CdReadInfo *pChannel = &gpReadInfo[channel];
|
|
ASSERT( pChannel != nil );
|
|
|
|
pChannel->Overlapped.Offset = _GET_OFFSET(offset) * CDSTREAM_SECTOR_SIZE;
|
|
|
|
if ( !ReadFile(hImage, buffer, size * CDSTREAM_SECTOR_SIZE, NULL, &pChannel->Overlapped)
|
|
&& GetLastError() != ERROR_IO_PENDING )
|
|
return STREAM_NONE;
|
|
else
|
|
return STREAM_SUCCESS;
|
|
}
|
|
|
|
SetFilePointer(hImage, _GET_OFFSET(offset) * CDSTREAM_SECTOR_SIZE, nil, FILE_BEGIN);
|
|
|
|
DWORD NumberOfBytesRead;
|
|
|
|
if ( !ReadFile(hImage, buffer, size * CDSTREAM_SECTOR_SIZE, &NumberOfBytesRead, nil) )
|
|
return STREAM_NONE;
|
|
else
|
|
return STREAM_SUCCESS;
|
|
}
|
|
|
|
int32
|
|
CdStreamGetStatus(int32 channel)
|
|
{
|
|
ASSERT( channel < gNumChannels );
|
|
CdReadInfo *pChannel = &gpReadInfo[channel];
|
|
ASSERT( pChannel != nil );
|
|
|
|
if ( _gbCdStreamAsync )
|
|
{
|
|
if ( pChannel->bInUse )
|
|
return STREAM_READING;
|
|
|
|
if ( pChannel->nSectorsToRead != 0 )
|
|
return STREAM_WAITING;
|
|
|
|
if ( pChannel->nStatus != STREAM_NONE )
|
|
{
|
|
int32 status = pChannel->nStatus;
|
|
|
|
pChannel->nStatus = STREAM_NONE;
|
|
|
|
return status;
|
|
}
|
|
|
|
return STREAM_NONE;
|
|
}
|
|
|
|
if ( _gbCdStreamOverlapped )
|
|
{
|
|
ASSERT( pChannel->hFile != nil );
|
|
if ( WaitForSingleObjectEx(pChannel->hFile, 0, TRUE) == WAIT_OBJECT_0 )
|
|
return STREAM_NONE;
|
|
else
|
|
return STREAM_READING;
|
|
}
|
|
|
|
return STREAM_NONE;
|
|
}
|
|
|
|
int32
|
|
CdStreamGetLastPosn(void)
|
|
{
|
|
return lastPosnRead;
|
|
}
|
|
|
|
int32
|
|
CdStreamSync(int32 channel)
|
|
{
|
|
ASSERT( channel < gNumChannels );
|
|
CdReadInfo *pChannel = &gpReadInfo[channel];
|
|
ASSERT( pChannel != nil );
|
|
|
|
if ( _gbCdStreamAsync )
|
|
{
|
|
if ( pChannel->nSectorsToRead != 0 )
|
|
{
|
|
pChannel->bLocked = true;
|
|
|
|
ASSERT( pChannel->hSemaphore != nil );
|
|
|
|
WaitForSingleObject(pChannel->hSemaphore, INFINITE);
|
|
}
|
|
|
|
pChannel->bInUse = false;
|
|
|
|
return pChannel->nStatus;
|
|
}
|
|
|
|
DWORD NumberOfBytesTransferred;
|
|
|
|
if ( _gbCdStreamOverlapped && pChannel->hFile )
|
|
{
|
|
ASSERT(pChannel->hFile != nil );
|
|
if ( GetOverlappedResult(pChannel->hFile, &pChannel->Overlapped, &NumberOfBytesTransferred, TRUE) )
|
|
return STREAM_NONE;
|
|
else
|
|
return STREAM_ERROR;
|
|
}
|
|
|
|
return STREAM_NONE;
|
|
}
|
|
|
|
void
|
|
AddToQueue(Queue *queue, int32 item)
|
|
{
|
|
ASSERT( queue != nil );
|
|
ASSERT( queue->items != nil );
|
|
queue->items[queue->tail] = item;
|
|
|
|
queue->tail = (queue->tail + 1) % queue->size;
|
|
|
|
if ( queue->head == queue->tail )
|
|
debug("Queue is full\n");
|
|
}
|
|
|
|
int32
|
|
GetFirstInQueue(Queue *queue)
|
|
{
|
|
ASSERT( queue != nil );
|
|
if ( queue->head == queue->tail )
|
|
return -1;
|
|
|
|
ASSERT( queue->items != nil );
|
|
return queue->items[queue->head];
|
|
}
|
|
|
|
void
|
|
RemoveFirstInQueue(Queue *queue)
|
|
{
|
|
ASSERT( queue != nil );
|
|
if ( queue->head == queue->tail )
|
|
{
|
|
debug("Queue is empty\n");
|
|
return;
|
|
}
|
|
|
|
queue->head = (queue->head + 1) % queue->size;
|
|
}
|
|
|
|
DWORD
|
|
WINAPI CdStreamThread(LPVOID lpThreadParameter)
|
|
{
|
|
debug("Created cdstream thread\n");
|
|
|
|
while ( true )
|
|
{
|
|
WaitForSingleObject(gCdStreamSema, INFINITE);
|
|
|
|
int32 channel = GetFirstInQueue(&gChannelRequestQ);
|
|
ASSERT( channel < gNumChannels );
|
|
|
|
CdReadInfo *pChannel = &gpReadInfo[channel];
|
|
ASSERT( pChannel != nil );
|
|
|
|
pChannel->bInUse = true;
|
|
|
|
if ( pChannel->nStatus == STREAM_NONE )
|
|
{
|
|
if ( _gbCdStreamOverlapped )
|
|
{
|
|
pChannel->Overlapped.Offset = pChannel->nSectorOffset * CDSTREAM_SECTOR_SIZE;
|
|
|
|
ASSERT(pChannel->hFile != nil );
|
|
ASSERT(pChannel->pBuffer != nil );
|
|
|
|
DWORD NumberOfBytesTransferred;
|
|
|
|
if ( ReadFile(pChannel->hFile,
|
|
pChannel->pBuffer,
|
|
pChannel->nSectorsToRead * CDSTREAM_SECTOR_SIZE,
|
|
NULL,
|
|
&pChannel->Overlapped) )
|
|
{
|
|
pChannel->nStatus = STREAM_NONE;
|
|
}
|
|
else if ( GetLastError() == ERROR_IO_PENDING
|
|
&& GetOverlappedResult(pChannel->hFile, &pChannel->Overlapped, &NumberOfBytesTransferred, TRUE) )
|
|
{
|
|
pChannel->nStatus = STREAM_NONE;
|
|
}
|
|
else
|
|
{
|
|
pChannel->nStatus = STREAM_ERROR;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ASSERT(pChannel->hFile != nil );
|
|
ASSERT(pChannel->pBuffer != nil );
|
|
|
|
SetFilePointer(pChannel->hFile, pChannel->nSectorOffset * CDSTREAM_SECTOR_SIZE, nil, FILE_BEGIN);
|
|
|
|
DWORD NumberOfBytesRead;
|
|
if ( ReadFile(pChannel->hFile,
|
|
pChannel->pBuffer,
|
|
pChannel->nSectorsToRead * CDSTREAM_SECTOR_SIZE,
|
|
&NumberOfBytesRead,
|
|
NULL) )
|
|
{
|
|
pChannel->nStatus = STREAM_NONE;
|
|
}
|
|
}
|
|
}
|
|
|
|
RemoveFirstInQueue(&gChannelRequestQ);
|
|
|
|
pChannel->nSectorsToRead = 0;
|
|
|
|
if ( pChannel->bLocked )
|
|
{
|
|
ASSERT( pChannel->hSemaphore != nil );
|
|
ReleaseSemaphore(pChannel->hSemaphore, 1, NULL);
|
|
}
|
|
|
|
pChannel->bInUse = false;
|
|
}
|
|
}
|
|
|
|
bool
|
|
CdStreamAddImage(char const *path)
|
|
{
|
|
ASSERT(path != nil);
|
|
ASSERT(gNumImages < MAX_CDIMAGES);
|
|
|
|
SetLastError(0);
|
|
|
|
gImgFiles[gNumImages] = CreateFile(path,
|
|
GENERIC_READ,
|
|
FILE_SHARE_READ,
|
|
nil,
|
|
OPEN_EXISTING,
|
|
_gdwCdStreamFlags | FILE_FLAG_RANDOM_ACCESS | FILE_ATTRIBUTE_READONLY,
|
|
nil);
|
|
|
|
ASSERT( gImgFiles[gNumImages] != nil );
|
|
if ( gImgFiles[gNumImages] == NULL )
|
|
return false;
|
|
|
|
strcpy(gCdImageNames[gNumImages], path);
|
|
|
|
gNumImages++;
|
|
|
|
return true;
|
|
}
|
|
|
|
char *
|
|
CdStreamGetImageName(int32 cd)
|
|
{
|
|
ASSERT(cd < MAX_CDIMAGES);
|
|
if ( gImgFiles[cd] != nil )
|
|
return gCdImageNames[cd];
|
|
|
|
return nil;
|
|
}
|
|
|
|
void
|
|
CdStreamRemoveImages(void)
|
|
{
|
|
for ( int32 i = 0; i < gNumChannels; i++ )
|
|
CdStreamSync(i);
|
|
|
|
for ( int32 i = 0; i < gNumImages; i++ )
|
|
{
|
|
SetLastError(0);
|
|
|
|
CloseHandle(gImgFiles[i]);
|
|
gImgFiles[i] = nil;
|
|
}
|
|
|
|
gNumImages = 0;
|
|
}
|
|
|
|
int32
|
|
CdStreamGetNumImages(void)
|
|
{
|
|
return gNumImages;
|
|
}
|
|
|
|
|
|
STARTPATCHES
|
|
InjectHook(0x405B50, CdStreamInitThread, PATCH_JUMP);
|
|
InjectHook(0x405C80, CdStreamInit, PATCH_JUMP);
|
|
//InjectHook(0x405DB0, debug, PATCH_JUMP);
|
|
InjectHook(0x405DC0, GetGTA3ImgSize, PATCH_JUMP);
|
|
InjectHook(0x405DD0, CdStreamShutdown, PATCH_JUMP);
|
|
InjectHook(0x405E40, CdStreamRead, PATCH_JUMP);
|
|
InjectHook(0x405F90, CdStreamGetStatus, PATCH_JUMP);
|
|
InjectHook(0x406000, CdStreamGetLastPosn, PATCH_JUMP);
|
|
InjectHook(0x406010, CdStreamSync, PATCH_JUMP);
|
|
InjectHook(0x4060B0, AddToQueue, PATCH_JUMP);
|
|
InjectHook(0x4060F0, GetFirstInQueue, PATCH_JUMP);
|
|
InjectHook(0x406110, RemoveFirstInQueue, PATCH_JUMP);
|
|
InjectHook(0x406140, CdStreamThread, PATCH_JUMP);
|
|
InjectHook(0x406270, CdStreamAddImage, PATCH_JUMP);
|
|
InjectHook(0x4062E0, CdStreamGetImageName, PATCH_JUMP);
|
|
InjectHook(0x406300, CdStreamRemoveImages, PATCH_JUMP);
|
|
InjectHook(0x406370, CdStreamGetNumImages, PATCH_JUMP);
|
|
ENDPATCHES |