mirror of https://github.com/PCSX2/pcsx2.git
392 lines
7.1 KiB
C++
392 lines
7.1 KiB
C++
/*
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* Copyright (C) 2007 Gabest
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* http://www.gabest.org
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*
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* This Program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This Program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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*/
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#include "stdafx.h"
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#include "cdvd.h"
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#include "SettingsDlg.h"
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#include <winioctl.h>
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#endif
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//
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// Note!
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//
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// If this DLL is dynamically linked against the MFC
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// DLLs, any functions exported from this DLL which
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// call into MFC must have the AFX_MANAGE_STATE macro
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// added at the very beginning of the function.
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//
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// For example:
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//
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// extern "C" BOOL PASCAL EXPORT ExportedFunction()
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// {
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// AFX_MANAGE_STATE(AfxGetStaticModuleState());
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// // normal function body here
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// }
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//
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// It is very important that this macro appear in each
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// function, prior to any calls into MFC. This means that
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// it must appear as the first statement within the
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// function, even before any object variable declarations
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// as their constructors may generate calls into the MFC
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// DLL.
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//
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// Please see MFC Technical Notes 33 and 58 for additional
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// details.
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//
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BEGIN_MESSAGE_MAP(cdvdApp, CWinApp)
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END_MESSAGE_MAP()
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cdvdApp::cdvdApp()
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{
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}
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cdvdApp theApp;
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BOOL cdvdApp::InitInstance()
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{
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__super::InitInstance();
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SetRegistryKey(_T("Gabest"));
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return TRUE;
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}
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//
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#define PS2E_LT_CDVD 0x08
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#define PS2E_CDVD_VERSION 0x0005
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EXPORT_C_(UINT32) PS2EgetLibType()
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{
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return PS2E_LT_CDVD;
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}
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EXPORT_C_(char*) PS2EgetLibName()
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{
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return "CDVDolio"; // olio = OverLapped I/O (duh)
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}
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EXPORT_C_(UINT32) PS2EgetLibVersion2(UINT32 type)
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{
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const UINT32 revision = 0;
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const UINT32 build = 1;
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const UINT32 minor = 0;
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return (build << 0) | (revision << 8) | (PS2E_CDVD_VERSION << 16) | (minor << 24);
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}
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//
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CDVD::CDVD()
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: m_hFile(INVALID_HANDLE_VALUE)
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{
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memset(&m_overlapped, 0, sizeof(m_overlapped));
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m_overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
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m_cache.pending = false;
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m_cache.count = 0;
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}
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CDVD::~CDVD()
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{
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CloseHandle(m_overlapped.hEvent);
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}
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LARGE_INTEGER CDVD::MakeOffset(int lsn)
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{
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LARGE_INTEGER offset;
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offset.QuadPart = (LONGLONG)lsn * m_block.size + m_block.offset;
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return offset;
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}
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bool CDVD::SyncRead(int lsn)
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{
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return Read(lsn) && GetBuffer();
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}
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bool CDVD::Open(CString path)
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{
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m_label.Empty();
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DWORD share = FILE_SHARE_READ;
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DWORD flags = FILE_ATTRIBUTE_READONLY | FILE_FLAG_SEQUENTIAL_SCAN | FILE_FLAG_OVERLAPPED;
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m_hFile = CreateFile(path, GENERIC_READ, share, NULL, OPEN_EXISTING, flags, (HANDLE)NULL);
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if(m_hFile == INVALID_HANDLE_VALUE)
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{
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return false;
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}
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m_block.count = 0;
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m_block.size = 2048;
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m_block.offset = 0;
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GET_LENGTH_INFORMATION info;
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DWORD ret = 0;
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if(GetFileSizeEx(m_hFile, &info.Length) || DeviceIoControl(m_hFile, IOCTL_DISK_GET_LENGTH_INFO, NULL, 0, &info, sizeof(info), &ret, NULL))
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{
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m_block.count = (int)(info.Length.QuadPart / m_block.size);
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}
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else
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{
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Close();
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return false;
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}
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if(!SyncRead(16) || memcmp(&m_buff[24 + 1], "CD001", 5) != 0)
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{
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Close();
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return false;
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}
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m_label = CString(CStringA((char*)&m_buff[24 + 40], 32));
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m_label.Trim();
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// m_block.count = *(DWORD*)&m_buff[24 + 80];
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return true;
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}
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void CDVD::Close()
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{
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if(m_hFile != INVALID_HANDLE_VALUE)
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{
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CancelIo(m_hFile);
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CloseHandle(m_hFile);
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m_hFile = INVALID_HANDLE_VALUE;
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}
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m_cache.pending = false;
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m_cache.count = 0;
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m_label.Empty();
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}
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CString CDVD::GetLabel()
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{
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return m_label;
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}
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bool CDVD::Read(int lsn, int mode)
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{
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if(mode != CDVD_MODE_2048) return false;
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if(lsn < 0) lsn += m_block.count;
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if(lsn < 0 || lsn >= m_block.count) return false;
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if(m_cache.pending)
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{
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CancelIo(m_hFile);
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ResetEvent(m_overlapped.hEvent);
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m_cache.pending = false;
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}
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if(lsn >= m_cache.start && lsn < m_cache.start + m_cache.count)
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{
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memcpy(&m_buff[24], &m_cache.buff[(lsn - m_cache.start) * 2048], 2048);
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return true;
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}
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m_cache.pending = true;
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m_cache.start = lsn;
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m_cache.count = min(CACHE_BLOCK_COUNT, m_block.count - m_cache.start);
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LARGE_INTEGER offset = MakeOffset(lsn);
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m_overlapped.Offset = offset.LowPart;
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m_overlapped.OffsetHigh = offset.HighPart;
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if(!ReadFile(m_hFile, m_cache.buff, m_cache.count * 2048, NULL, &m_overlapped))
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{
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switch(GetLastError())
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{
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case ERROR_IO_PENDING:
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break;
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case ERROR_HANDLE_EOF:
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return false;
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}
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}
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return true;
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}
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BYTE* CDVD::GetBuffer()
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{
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DWORD size = 0;
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if(m_cache.pending)
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{
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if(GetOverlappedResult(m_hFile, &m_overlapped, &size, TRUE))
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{
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memcpy(&m_buff[24], m_cache.buff, 2048);
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m_cache.pending = false;
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}
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else
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{
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return NULL;
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}
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}
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return &m_buff[24];
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}
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UINT32 CDVD::GetTN(cdvdTN* buff)
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{
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buff->strack = 1;
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buff->etrack = 1;
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return 0;
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}
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UINT32 CDVD::GetTD(BYTE track, cdvdTD* buff)
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{
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if(track == 0)
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{
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buff->lsn = m_block.count;
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}
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else
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{
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buff->type = CDVD_MODE1_TRACK;
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buff->lsn = 0;
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}
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return 0;
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}
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static CDVD s_cdvd;
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//
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EXPORT_C_(UINT32) CDVDinit()
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{
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return 0;
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}
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EXPORT_C CDVDshutdown()
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{
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}
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EXPORT_C_(UINT32) CDVDopen(const char* title)
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{
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CString path;
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int i = AfxGetApp()->GetProfileInt(_T("Settings"), _T("drive"), -1);
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if(i >= 'A' && i <= 'Z')
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{
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path.Format(_T("\\\\.\\%c:"), i);
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}
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else
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{
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path = AfxGetApp()->GetProfileString(_T("Settings"), _T("iso"), _T(""));
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}
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return s_cdvd.Open(path) ? 0 : -1;
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}
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EXPORT_C CDVDclose()
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{
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s_cdvd.Close();
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}
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EXPORT_C_(UINT32) CDVDreadTrack(int lsn, int mode)
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{
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return s_cdvd.Read(lsn, mode) ? 0 : -1;
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}
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EXPORT_C_(BYTE*) CDVDgetBuffer()
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{
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return s_cdvd.GetBuffer();
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}
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EXPORT_C_(UINT32) CDVDreadSubQ(UINT32 lsn, cdvdSubQ* subq)
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{
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return -1;
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}
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EXPORT_C_(UINT32) CDVDgetTN(cdvdTN* buff)
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{
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return s_cdvd.GetTN(buff);
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}
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EXPORT_C_(UINT32) CDVDgetTD(BYTE track, cdvdTD* buff)
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{
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return s_cdvd.GetTD(track, buff);
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}
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EXPORT_C_(UINT32) CDVDgetTOC(void* toc)
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{
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return -1; // TODO
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}
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EXPORT_C_(UINT32) CDVDgetDiskType()
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{
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return CDVD_TYPE_PS2DVD; // TODO
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}
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EXPORT_C_(UINT32) CDVDgetTrayStatus()
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{
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return CDVD_TRAY_CLOSE;
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}
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EXPORT_C_(UINT32) CDVDctrlTrayOpen()
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{
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return 0;
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}
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EXPORT_C_(UINT32) CDVDctrlTrayClose()
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{
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return 0;
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}
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EXPORT_C CDVDconfigure()
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{
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AFX_MANAGE_STATE(AfxGetStaticModuleState());
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CSettingsDlg dlg;
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if(IDOK == dlg.DoModal())
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{
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CDVDshutdown();
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CDVDinit();
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}
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}
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EXPORT_C CDVDabout()
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{
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}
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EXPORT_C_(UINT32) CDVDtest()
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{
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return 0;
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}
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