Play-/Source/iop/Iop_Cdvdman.cpp

#include <cstring>
#include "Log.h"
#include "../states/RegisterStateFile.h"
#include "../Ps2Const.h"
#include "../TimeUtils.h"
#include "IopBios.h"
#include "Iop_Cdvdman.h"

#define LOG_NAME "iop_cdvdman"

#define STATE_FILENAME ("iop_cdvdman/state.xml")
#define STATE_CALLBACK_ADDRESS ("CallbackAddress")
#define STATE_STATUS ("Status")
#define STATE_DISCCHANGED ("DiscChanged")
#define STATE_PENDING_COMMAND ("PendingCommand")
#define STATE_PENDING_COMMAND_DELAY ("PendingCommandDelay")

#define FUNCTION_CDINIT "CdInit"
#define FUNCTION_CDSTANDBY "CdStandby"
#define FUNCTION_CDREAD "CdRead"
#define FUNCTION_CDSEEK "CdSeek"
#define FUNCTION_CDGETERROR "CdGetError"
#define FUNCTION_CDSEARCHFILE "CdSearchFile"
#define FUNCTION_CDSYNC "CdSync"
#define FUNCTION_CDGETDISKTYPE "CdGetDiskType"
#define FUNCTION_CDDISKREADY "CdDiskReady"
#define FUNCTION_CDTRAYREQ "CdTrayReq"
#define FUNCTION_CDREADILINKID "CdReadILinkId"
#define FUNCTION_CDREADCLOCK "CdReadClock"
#define FUNCTION_CDSTATUS "CdStatus"
#define FUNCTION_CDCALLBACK "CdCallback"
#define FUNCTION_CDGETREADPOS "CdGetReadPos"
#define FUNCTION_CDSTINIT "CdStInit"
#define FUNCTION_CDSTREAD "CdStRead"
#define FUNCTION_CDSTSEEK "CdStSeek"
#define FUNCTION_CDSTSTART "CdStStart"
#define FUNCTION_CDSTSTAT "CdStStat"
#define FUNCTION_CDSTSTOP "CdStStop"
#define FUNCTION_CDREADMODEL "CdReadModel"
#define FUNCTION_CDSETMMODE "CdSetMmode"
#define FUNCTION_CDSTSEEKF "CdStSeekF"
#define FUNCTION_CDREADDVDDUALINFO "CdReadDvdDualInfo"
#define FUNCTION_CDLAYERSEARCHFILE "CdLayerSearchFile"

using namespace Iop;

const uint64 CCdvdman::COMMAND_READ_BASE_DELAY = TimeUtils::UsecsToCycles(PS2::IOP_CLOCK_OVER_FREQ, 100);
const uint64 CCdvdman::COMMAND_READ_SECTOR_DELAY = TimeUtils::UsecsToCycles(PS2::IOP_CLOCK_OVER_FREQ, 500);
const uint64 CCdvdman::COMMAND_SEEK_DELAY = TimeUtils::UsecsToCycles(PS2::IOP_CLOCK_OVER_FREQ, 100);

CCdvdman::CCdvdman(CIopBios& bios, uint8* ram)
    : m_bios(bios)
    , m_ram(ram)
{
}

void CCdvdman::LoadState(Framework::CZipArchiveReader& archive)
{
	CRegisterStateFile registerFile(*archive.BeginReadFile(STATE_FILENAME));
	m_callbackPtr = registerFile.GetRegister32(STATE_CALLBACK_ADDRESS);
	m_status = registerFile.GetRegister32(STATE_STATUS);
	m_discChanged = registerFile.GetRegister32(STATE_DISCCHANGED);
	m_pendingCommand = static_cast<COMMAND>(registerFile.GetRegister32(STATE_PENDING_COMMAND));
	m_pendingCommandDelay = registerFile.GetRegister32(STATE_PENDING_COMMAND_DELAY);
}

void CCdvdman::SaveState(Framework::CZipArchiveWriter& archive) const
{
	auto registerFile = std::make_unique<CRegisterStateFile>(STATE_FILENAME);
	registerFile->SetRegister32(STATE_CALLBACK_ADDRESS, m_callbackPtr);
	registerFile->SetRegister32(STATE_STATUS, m_status);
	registerFile->SetRegister32(STATE_DISCCHANGED, m_discChanged);
	registerFile->SetRegister32(STATE_PENDING_COMMAND, m_pendingCommand);
	registerFile->SetRegister32(STATE_PENDING_COMMAND_DELAY, m_pendingCommandDelay);
	archive.InsertFile(std::move(registerFile));
}

static uint8 Uint8ToBcd(uint8 input)
{
	uint8 digit0 = input % 10;
	uint8 digit1 = (input / 10) % 10;
	return digit0 | (digit1 << 4);
}

uint32 CCdvdman::CdReadClockDirect(uint8* clockBuffer)
{
	auto currentTime = time(0);
	auto localTime = localtime(&currentTime);
	clockBuffer[0] = 0;                                                        //Status (0 = ok, anything else = error)
	clockBuffer[1] = Uint8ToBcd(static_cast<uint8>(localTime->tm_sec));        //Seconds
	clockBuffer[2] = Uint8ToBcd(static_cast<uint8>(localTime->tm_min));        //Minutes
	clockBuffer[3] = Uint8ToBcd(static_cast<uint8>(localTime->tm_hour));       //Hour
	clockBuffer[4] = 0;                                                        //Padding
	clockBuffer[5] = Uint8ToBcd(static_cast<uint8>(localTime->tm_mday));       //Day
	clockBuffer[6] = Uint8ToBcd(static_cast<uint8>(localTime->tm_mon + 1));    //Month
	clockBuffer[7] = Uint8ToBcd(static_cast<uint8>(localTime->tm_year % 100)); //Year
	//Returns 1 on success and 0 on error
	return 1;
}

uint32 CCdvdman::CdGetDiskTypeDirect(COpticalMedia* opticalMedia)
{
	//Assert just to make sure that we're not handling different optical medias
	//(Only one can be inserted at once)
	assert(m_opticalMedia == opticalMedia);
	switch(m_opticalMedia->GetTrackDataType(0))
	{
	case COpticalMedia::TRACK_DATA_TYPE_MODE2_2352:
		return CCdvdman::CDVD_DISKTYPE_PS2CD;
		break;
	case COpticalMedia::TRACK_DATA_TYPE_MODE1_2048:
	default:
		return CCdvdman::CDVD_DISKTYPE_PS2DVD;
		break;
	}
}

uint32 CCdvdman::CdLayerSearchFileDirect(COpticalMedia* opticalMedia, FILEINFO* fileInfo, const char* path, uint32 layer)
{
	assert(m_opticalMedia == opticalMedia);
	if(!m_opticalMedia)
	{
		assert(false);
		return 0;
	}

	CISO9660* fileSystem = nullptr;
	uint32 layerBaseSector = 0;

	switch(layer)
	{
	case 0:
		fileSystem = m_opticalMedia->GetFileSystem();
		break;
	case 1:
		fileSystem = m_opticalMedia->GetFileSystemL1();
		layerBaseSector = m_opticalMedia->GetDvdSecondLayerStart();
		break;
	default:
		assert(false);
		break;
	}

	if(!fileSystem)
	{
		assert(false);
		return 0;
	}

	std::string fixedPath(path);

	//Fix all slashes
	{
		auto slashPos = fixedPath.find('\\');
		while(slashPos != std::string::npos)
		{
			fixedPath[slashPos] = '/';
			slashPos = fixedPath.find('\\', slashPos + 1);
		}
	}

	//Hack to remove any superfluous version extensions (ie.: ;1) that might be present in the path
	//Don't know if this is valid behavior but shouldn't hurt compatibility. This was done for Sengoku Musou 2.
	while(1)
	{
		auto semColCount = std::count(fixedPath.begin(), fixedPath.end(), ';');
		if(semColCount <= 1) break;
		auto semColPos = fixedPath.rfind(';');
		assert(semColPos != std::string::npos);
		fixedPath = std::string(fixedPath.begin(), fixedPath.begin() + semColPos);
	}

	ISO9660::CDirectoryRecord record;
	if(fileSystem->GetFileRecord(&record, fixedPath.c_str()))
	{
		fileInfo->sector = record.GetPosition() + layerBaseSector;
		fileInfo->size = record.GetDataLength();
		strncpy(fileInfo->name, record.GetName(), 16);
		fileInfo->name[15] = 0;
		memset(fileInfo->date, 0, 8);
		return 1;
	}
	else
	{
		return 0;
	}
}

std::string CCdvdman::GetId() const
{
	return "cdvdman";
}

std::string CCdvdman::GetFunctionName(unsigned int functionId) const
{
	switch(functionId)
	{
	case 4:
		return FUNCTION_CDINIT;
		break;
	case 5:
		return FUNCTION_CDSTANDBY;
		break;
	case 6:
		return FUNCTION_CDREAD;
		break;
	case 7:
		return FUNCTION_CDSEEK;
		break;
	case 8:
		return FUNCTION_CDGETERROR;
		break;
	case 10:
		return FUNCTION_CDSEARCHFILE;
		break;
	case 11:
		return FUNCTION_CDSYNC;
		break;
	case 12:
		return FUNCTION_CDGETDISKTYPE;
		break;
	case 13:
		return FUNCTION_CDDISKREADY;
		break;
	case 14:
		return FUNCTION_CDTRAYREQ;
		break;
	case 22:
		return FUNCTION_CDREADILINKID;
		break;
	case 24:
		return FUNCTION_CDREADCLOCK;
		break;
	case 28:
		return FUNCTION_CDSTATUS;
		break;
	case 37:
		return FUNCTION_CDCALLBACK;
		break;
	case 44:
		return FUNCTION_CDGETREADPOS;
		break;
	case 56:
		return FUNCTION_CDSTINIT;
		break;
	case 57:
		return FUNCTION_CDSTREAD;
		break;
	case 58:
		return FUNCTION_CDSTSEEK;
		break;
	case 59:
		return FUNCTION_CDSTSTART;
		break;
	case 60:
		return FUNCTION_CDSTSTAT;
		break;
	case 61:
		return FUNCTION_CDSTSTOP;
		break;
	case 64:
		return FUNCTION_CDREADMODEL;
		break;
	case 75:
		return FUNCTION_CDSETMMODE;
		break;
	case 77:
		return FUNCTION_CDSTSEEKF;
		break;
	case 83:
		return FUNCTION_CDREADDVDDUALINFO;
		break;
	case 84:
		return FUNCTION_CDLAYERSEARCHFILE;
		break;
	default:
		return "unknown";
		break;
	}
}

void CCdvdman::Invoke(CMIPS& ctx, unsigned int functionId)
{
	switch(functionId)
	{
	case 4:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdInit(ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 5:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStandby();
		break;
	case 6:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdRead(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0,
		    ctx.m_State.nGPR[CMIPS::A2].nV0,
		    ctx.m_State.nGPR[CMIPS::A3].nV0);
		break;
	case 7:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdSeek(
		    ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 8:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdGetError();
		break;
	case 10:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdSearchFile(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0);
		break;
	case 11:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdSync(ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 12:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdGetDiskType();
		break;
	case 13:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdDiskReady(ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 14:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdTrayReq(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0);
		break;
	case 22:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdReadILinkId(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0);
		break;
	case 24:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdReadClock(ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 28:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStatus();
		break;
	case 37:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdCallback(ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 44:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdGetReadPos();
		break;
	case 56:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStInit(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0,
		    ctx.m_State.nGPR[CMIPS::A2].nV0);
		break;
	case 57:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStRead(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0,
		    ctx.m_State.nGPR[CMIPS::A2].nV0,
		    ctx.m_State.nGPR[CMIPS::A3].nV0);
		break;
	case 58:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStSeek(
		    ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 59:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStStart(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0);
		break;
	case 60:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStStat();
		break;
	case 61:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStStop();
		break;
	case 64:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdReadModel(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0);
		break;
	case 75:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdSetMmode(ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 77:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdStSeekF(
		    ctx.m_State.nGPR[CMIPS::A0].nV0);
		break;
	case 83:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdReadDvdDualInfo(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0);
		break;
	case 84:
		ctx.m_State.nGPR[CMIPS::V0].nV0 = CdLayerSearchFile(
		    ctx.m_State.nGPR[CMIPS::A0].nV0,
		    ctx.m_State.nGPR[CMIPS::A1].nV0,
		    ctx.m_State.nGPR[CMIPS::A2].nV0);
		break;
	default:
		CLog::GetInstance().Warn(LOG_NAME, "Unknown function called (%d).\r\n",
		                         functionId);
		break;
	}
}

void CCdvdman::CountTicks(uint32 ticks)
{
	if(m_pendingCommand != COMMAND_NONE)
	{
		m_pendingCommandDelay = std::max<int32>(0, m_pendingCommandDelay - ticks);
		if(m_pendingCommandDelay == 0)
		{
			switch(m_pendingCommand)
			{
			case COMMAND_READ:
				if(m_callbackPtr != 0)
				{
					m_bios.TriggerCallback(m_callbackPtr, CDVD_FUNCTION_READ);
				}
				break;
			case COMMAND_SEEK:
				if(m_callbackPtr != 0)
				{
					m_bios.TriggerCallback(m_callbackPtr, CDVD_FUNCTION_SEEK);
				}
				break;
			default:
				assert(false);
				break;
			}
			m_bios.ReleaseWaitCdSync();
			m_status = CDVD_STATUS_PAUSED;
			m_pendingCommand = COMMAND_NONE;
		}
	}
}

void CCdvdman::SetOpticalMedia(COpticalMedia* opticalMedia)
{
	m_opticalMedia = opticalMedia;
}

uint32 CCdvdman::CdInit(uint32 mode)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDINIT "(mode = %d);\r\n", mode);
	//Mode
	//0 - Initialize
	//1 - Init & No Check
	//5 - Exit
	return 1;
}

uint32 CCdvdman::CdStandby()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTANDBY "();\r\n");
	if(m_callbackPtr != 0)
	{
		m_bios.TriggerCallback(m_callbackPtr, CDVD_FUNCTION_STANDBY);
	}
	return 1;
}

uint32 CCdvdman::CdRead(uint32 startSector, uint32 sectorCount, uint32 bufferPtr, uint32 modePtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDREAD "(startSector = 0x%X, sectorCount = 0x%X, bufferPtr = 0x%08X, modePtr = 0x%08X);\r\n",
	                          startSector, sectorCount, bufferPtr, modePtr);
	if(m_pendingCommand != COMMAND_NONE)
	{
		//Command already pending (Atelier Marie+Elie does that)
		CLog::GetInstance().Warn(LOG_NAME, "Trying to start a read while another command is pending.\r\n");
		return 0;
	}
	if(modePtr != 0)
	{
		FRAMEWORK_MAYBE_UNUSED uint8* mode = &m_ram[modePtr];
		//Does that make sure it's 2048 byte mode?
		assert(mode[2] == 0);
	}
	if(m_opticalMedia && (bufferPtr != 0))
	{
		uint8* buffer = &m_ram[bufferPtr & (PS2::IOP_RAM_SIZE - 1)];
		static const uint32 sectorSize = 2048;
		auto fileSystem = m_opticalMedia->GetFileSystem();
		for(unsigned int i = 0; i < sectorCount; i++)
		{
			fileSystem->ReadBlock(startSector + i, buffer);
			buffer += sectorSize;
		}
	}
	m_pendingCommand = COMMAND_READ;
	m_pendingCommandDelay = COMMAND_READ_BASE_DELAY + (sectorCount * COMMAND_READ_SECTOR_DELAY);
	m_status = CDVD_STATUS_READING;
	return 1;
}

uint32 CCdvdman::CdSeek(uint32 sector)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSEEK "(sector = 0x%X);\r\n",
	                          sector);
	assert(m_pendingCommand == COMMAND_NONE);
	m_pendingCommand = COMMAND_SEEK;
	m_pendingCommandDelay = COMMAND_SEEK_DELAY;
	return 1;
}

uint32 CCdvdman::CdGetError()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDGETERROR "();\r\n");
	return 0;
}

uint32 CCdvdman::CdSearchFile(uint32 fileInfoPtr, uint32 namePtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSEARCHFILE "(fileInfoPtr = 0x%08X, namePtr = 0x%08X);\r\n",
	                          fileInfoPtr, namePtr);
	return CdLayerSearchFile(fileInfoPtr, namePtr, 0);
}

uint32 CCdvdman::CdSync(uint32 mode)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSYNC "(mode = %i);\r\n",
	                          mode);
	assert(
	    (mode == 0x00) || (mode == 0x01) ||
	    (mode == 0x10) || (mode == 0x11));
	if((mode == 0x00) || (mode == 0x10))
	{
		if(m_pendingCommand != COMMAND_NONE)
		{
			//Put the thread in a wait state till the CD command is complete
			m_bios.WaitCdSync();
		}
		//When the thread will be ready, the return value needs to be 0
		return 0;
	}
	return (m_pendingCommand == COMMAND_NONE) ? 0 : 1;
}

uint32 CCdvdman::CdGetDiskType()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDGETDISKTYPE "();\r\n");
	return CdGetDiskTypeDirect(m_opticalMedia);
}

uint32 CCdvdman::CdDiskReady(uint32 mode)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDDISKREADY "(mode = %i);\r\n",
	                          mode);
	m_status = CDVD_STATUS_PAUSED;
	return 2;
}

uint32 CCdvdman::CdTrayReq(uint32 mode, uint32 trayCntPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDTRAYREQ "(mode = %d, trayCntPtr = 0x%08X);\r\n",
	                          mode, trayCntPtr);

	auto trayCnt = reinterpret_cast<uint32*>(m_ram + trayCntPtr);

	if(mode == CDVD_TRAY_CHECK && m_discChanged)
	{
		(*trayCnt) = 1;
		m_discChanged = false;
	}
	else
	{
		(*trayCnt) = 0;
	}

	return 1;
}

uint32 CCdvdman::CdReadILinkId(uint32 idPtr, uint32 statPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDREADILINKID "(idPtr = 0x%08X, statPtr = 0x%08X);\r\n",
	                          idPtr, statPtr);

	auto idBuffer = m_ram + idPtr;
	//iLink ID is 64-bits (8 bytes)
	memset(idBuffer, 0xAA, 8);
	if(statPtr != 0)
	{
		*reinterpret_cast<uint32*>(m_ram + statPtr) = 0;
	}
	return 1;
}

uint32 CCdvdman::CdReadClock(uint32 clockPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDREADCLOCK "(clockPtr = 0x%08X);\r\n",
	                          clockPtr);

	auto clockBuffer = m_ram + clockPtr;
	return CdReadClockDirect(clockBuffer);
}

uint32 CCdvdman::CdStatus()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTATUS "();\r\n");
	return m_status;
}

uint32 CCdvdman::CdCallback(uint32 callbackPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDCALLBACK "(callbackPtr = 0x%08X);\r\n",
	                          callbackPtr);

	uint32 oldCallbackPtr = m_callbackPtr;
	m_callbackPtr = callbackPtr;
	return oldCallbackPtr;
}

uint32 CCdvdman::CdGetReadPos()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDGETREADPOS "();\r\n");

	//If we're reading, report that we've read 1 sector for now
	return (m_pendingCommand == COMMAND_READ) ? 0x800 : 0;
}

uint32 CCdvdman::CdStInit(uint32 bufMax, uint32 bankMax, uint32 bufPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTINIT "(bufMax = %d, bankMax = %d, bufPtr = 0x%08X);\r\n",
	                          bufMax, bankMax, bufPtr);
	m_streamPos = 0;
	m_streamBufferSize = bufMax;
	return 1;
}

uint32 CCdvdman::CdStRead(uint32 sectors, uint32 bufPtr, uint32 mode, uint32 errPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTREAD "(sectors = %d, bufPtr = 0x%08X, mode = %d, errPtr = 0x%08X);\r\n",
	                          sectors, bufPtr, mode, errPtr);
	auto fileSystem = m_opticalMedia->GetFileSystem();
	for(unsigned int i = 0; i < sectors; i++)
	{
		fileSystem->ReadBlock(m_streamPos, m_ram + (bufPtr + (i * 0x800)));
		m_streamPos++;
	}
	if(errPtr != 0)
	{
		auto err = reinterpret_cast<uint32*>(m_ram + errPtr);
		(*err) = 0; //No error
	}
	return sectors;
}

uint32 CCdvdman::CdStSeek(uint32 sector)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTSEEK "(sector = %d);\r\n",
	                          sector);
	m_streamPos = sector;
	return 1;
}

uint32 CCdvdman::CdStStart(uint32 sector, uint32 modePtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTSTART "(sector = %d, modePtr = 0x%08X);\r\n",
	                          sector, modePtr);
	m_streamPos = sector;
	return 1;
}

uint32 CCdvdman::CdStStat()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTSTAT "();\r\n");
	return m_streamBufferSize;
}

uint32 CCdvdman::CdStStop()
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTSTOP "();\r\n");
	return 1;
}

uint32 CCdvdman::CdReadModel(uint32 modelPtr, uint32 statPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDREADMODEL "(modelPtr = 0x%08X, statPtr = 0x%08X);\r\n",
	                          modelPtr, statPtr);

	auto modelBuffer = reinterpret_cast<char*>(m_ram + modelPtr);
	//modelBuffer seems to be 32 bytes long (Silent Scope 2 uses that number)
	strcpy(modelBuffer, "SCPH-30000");
	if(statPtr != 0)
	{
		*reinterpret_cast<uint32*>(m_ram + statPtr) = 0;
	}
	return 1;
}

uint32 CCdvdman::CdSetMmode(uint32 mode)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSETMMODE "(mode = %d);\r\n", mode);
	return 1;
}

uint32 CCdvdman::CdStSeekF(uint32 sector)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDSTSEEKF "(sector = %d);\r\n",
	                          sector);
	m_streamPos = sector;
	return 1;
}

uint32 CCdvdman::CdReadDvdDualInfo(uint32 onDualPtr, uint32 layer1StartPtr)
{
	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDREADDVDDUALINFO "(onDualPtr = 0x%08X, layer1StartPtr = 0x%08X);\r\n",
	                          onDualPtr, layer1StartPtr);

	auto onDual = reinterpret_cast<uint32*>(m_ram + onDualPtr);
	auto layer1Start = reinterpret_cast<uint32*>(m_ram + layer1StartPtr);
	(*onDual) = m_opticalMedia->GetDvdIsDualLayer() ? 1 : 0;
	(*layer1Start) = m_opticalMedia->GetDvdSecondLayerStart();

	return 1;
}

uint32 CCdvdman::CdLayerSearchFile(uint32 fileInfoPtr, uint32 namePtr, uint32 layer)
{
	const char* name = NULL;
	FILEINFO* fileInfo = NULL;

	if(namePtr != 0)
	{
		name = reinterpret_cast<const char*>(m_ram + namePtr);
	}
	if(fileInfoPtr != 0)
	{
		fileInfo = reinterpret_cast<FILEINFO*>(m_ram + fileInfoPtr);
	}

	CLog::GetInstance().Print(LOG_NAME, FUNCTION_CDLAYERSEARCHFILE "(fileInfo = 0x%08X, name = '%s', layer = %d);\r\n",
	                          fileInfoPtr, name, layer);

	uint32 result = CdLayerSearchFileDirect(m_opticalMedia, fileInfo, name, layer);
	return result;
}