pcsx2/plugins/CDVDolio/cdvd.cpp

392 lines
6.7 KiB
C++

/*
* Copyright (C) 2007 Gabest
* http://www.gabest.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "cdvd.h"
#include "SettingsDlg.h"
#include <winioctl.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
//
// Note!
//
// If this DLL is dynamically linked against the MFC
// DLLs, any functions exported from this DLL which
// call into MFC must have the AFX_MANAGE_STATE macro
// added at the very beginning of the function.
//
// For example:
//
// extern "C" BOOL PASCAL EXPORT ExportedFunction()
// {
// AFX_MANAGE_STATE(AfxGetStaticModuleState());
// // normal function body here
// }
//
// It is very important that this macro appear in each
// function, prior to any calls into MFC. This means that
// it must appear as the first statement within the
// function, even before any object variable declarations
// as their constructors may generate calls into the MFC
// DLL.
//
// Please see MFC Technical Notes 33 and 58 for additional
// details.
//
BEGIN_MESSAGE_MAP(cdvdApp, CWinApp)
END_MESSAGE_MAP()
cdvdApp::cdvdApp()
{
}
cdvdApp theApp;
BOOL cdvdApp::InitInstance()
{
__super::InitInstance();
SetRegistryKey(_T("Gabest"));
return TRUE;
}
//
#define PS2E_LT_CDVD 0x08
#define PS2E_CDVD_VERSION 0x0005
EXPORT_C_(UINT32) PS2EgetLibType()
{
return PS2E_LT_CDVD;
}
EXPORT_C_(char*) PS2EgetLibName()
{
return "CDVDolio"; // olio = OverLapped I/O (duh)
}
EXPORT_C_(UINT32) PS2EgetLibVersion2(UINT32 type)
{
const UINT32 revision = 0;
const UINT32 build = 1;
const UINT32 minor = 0;
return (build << 0) | (revision << 8) | (PS2E_CDVD_VERSION << 16) | (minor << 24);
}
//
CDVD::CDVD()
: m_hFile(INVALID_HANDLE_VALUE)
{
memset(&m_overlapped, 0, sizeof(m_overlapped));
m_overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
m_cache.pending = false;
m_cache.count = 0;
}
CDVD::~CDVD()
{
CloseHandle(m_overlapped.hEvent);
}
LARGE_INTEGER CDVD::MakeOffset(int lsn)
{
LARGE_INTEGER offset;
offset.QuadPart = (LONGLONG)lsn * m_block.size + m_block.offset;
return offset;
}
bool CDVD::SyncRead(int lsn)
{
return Read(lsn) && GetBuffer();
}
bool CDVD::Open(CString path)
{
m_label.Empty();
DWORD share = FILE_SHARE_READ;
DWORD flags = FILE_ATTRIBUTE_READONLY | FILE_FLAG_SEQUENTIAL_SCAN | FILE_FLAG_OVERLAPPED;
m_hFile = CreateFile(path, GENERIC_READ, share, NULL, OPEN_EXISTING, flags, (HANDLE)NULL);
if(m_hFile == INVALID_HANDLE_VALUE)
{
return false;
}
m_block.count = 0;
m_block.size = 2048;
m_block.offset = 0;
GET_LENGTH_INFORMATION info;
DWORD ret = 0;
if(GetFileSizeEx(m_hFile, &info.Length) || DeviceIoControl(m_hFile, IOCTL_DISK_GET_LENGTH_INFO, NULL, 0, &info, sizeof(info), &ret, NULL))
{
m_block.count = (int)(info.Length.QuadPart / m_block.size);
}
else
{
Close();
return false;
}
if(!SyncRead(16) || memcmp(&m_buff[24 + 1], "CD001", 5) != 0)
{
Close();
return false;
}
m_label = CString(CStringA((char*)&m_buff[24 + 40], 32));
m_label.Trim();
// m_block.count = *(DWORD*)&m_buff[24 + 80];
return true;
}
void CDVD::Close()
{
if(m_hFile != INVALID_HANDLE_VALUE)
{
CancelIo(m_hFile);
CloseHandle(m_hFile);
m_hFile = INVALID_HANDLE_VALUE;
}
m_cache.pending = false;
m_cache.count = 0;
m_label.Empty();
}
CString CDVD::GetLabel()
{
return m_label;
}
bool CDVD::Read(int lsn, int mode)
{
if(mode != CDVD_MODE_2048) return false;
if(lsn < 0) lsn += m_block.count;
if(lsn < 0 || lsn >= m_block.count) return false;
if(m_cache.pending)
{
CancelIo(m_hFile);
ResetEvent(m_overlapped.hEvent);
m_cache.pending = false;
}
if(lsn >= m_cache.start && lsn < m_cache.start + m_cache.count)
{
memcpy(&m_buff[24], &m_cache.buff[(lsn - m_cache.start) * 2048], 2048);
return true;
}
m_cache.pending = true;
m_cache.start = lsn;
m_cache.count = min(CACHE_BLOCK_COUNT, m_block.count - m_cache.start);
LARGE_INTEGER offset = MakeOffset(lsn);
m_overlapped.Offset = offset.LowPart;
m_overlapped.OffsetHigh = offset.HighPart;
if(!ReadFile(m_hFile, m_cache.buff, m_cache.count * 2048, NULL, &m_overlapped))
{
switch(GetLastError())
{
case ERROR_IO_PENDING:
break;
case ERROR_HANDLE_EOF:
return false;
}
}
return true;
}
BYTE* CDVD::GetBuffer()
{
DWORD size = 0;
if(m_cache.pending)
{
if(GetOverlappedResult(m_hFile, &m_overlapped, &size, TRUE))
{
memcpy(&m_buff[24], m_cache.buff, 2048);
m_cache.pending = false;
}
else
{
return NULL;
}
}
return &m_buff[24];
}
UINT32 CDVD::GetTN(cdvdTN* buff)
{
buff->strack = 1;
buff->etrack = 1;
return 0;
}
UINT32 CDVD::GetTD(BYTE track, cdvdTD* buff)
{
if(track == 0)
{
buff->lsn = m_block.count;
}
else
{
buff->type = CDVD_MODE1_TRACK;
buff->lsn = 0;
}
return 0;
}
static CDVD s_cdvd;
//
EXPORT_C_(UINT32) CDVDinit()
{
return 0;
}
EXPORT_C CDVDshutdown()
{
}
EXPORT_C_(UINT32) CDVDopen(const char* title)
{
CString path;
int i = AfxGetApp()->GetProfileInt(_T("Settings"), _T("drive"), -1);
if(i >= 'A' && i <= 'Z')
{
path.Format(_T("\\\\.\\%c:"), i);
}
else
{
path = AfxGetApp()->GetProfileString(_T("Settings"), _T("iso"), _T(""));
}
return s_cdvd.Open(path) ? 0 : -1;
}
EXPORT_C CDVDclose()
{
s_cdvd.Close();
}
EXPORT_C_(UINT32) CDVDreadTrack(int lsn, int mode)
{
return s_cdvd.Read(lsn, mode) ? 0 : -1;
}
EXPORT_C_(BYTE*) CDVDgetBuffer()
{
return s_cdvd.GetBuffer();
}
EXPORT_C_(UINT32) CDVDreadSubQ(UINT32 lsn, cdvdSubQ* subq)
{
return -1;
}
EXPORT_C_(UINT32) CDVDgetTN(cdvdTN* buff)
{
return s_cdvd.GetTN(buff);
}
EXPORT_C_(UINT32) CDVDgetTD(BYTE track, cdvdTD* buff)
{
return s_cdvd.GetTD(track, buff);
}
EXPORT_C_(UINT32) CDVDgetTOC(void* toc)
{
return -1; // TODO
}
EXPORT_C_(UINT32) CDVDgetDiskType()
{
return CDVD_TYPE_PS2DVD; // TODO
}
EXPORT_C_(UINT32) CDVDgetTrayStatus()
{
return CDVD_TRAY_CLOSE;
}
EXPORT_C_(UINT32) CDVDctrlTrayOpen()
{
return 0;
}
EXPORT_C_(UINT32) CDVDctrlTrayClose()
{
return 0;
}
EXPORT_C CDVDconfigure()
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
CSettingsDlg dlg;
if(IDOK == dlg.DoModal())
{
CDVDshutdown();
CDVDinit();
}
}
EXPORT_C CDVDabout()
{
}
EXPORT_C_(UINT32) CDVDtest()
{
return 0;
}