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Merge pull request #1545 from turtleli/cdvd-spti 

cdvdgigaherz: Use SPTI to read raw CD sectors
This commit is contained in:
Jonathan Li 2016-09-02 23:56:05 +01:00 committed by GitHub
parent a123e65185 3d8be787a2
commit 4d10eda308
2 changed files with 54 additions and 2 deletions
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2
plugins/cdvdGigaherz/src/CDVD.h
View File

@ -90,7 +90,7 @@ class IOCtlSrc: public Source
IOCtlSrc(IOCtlSrc&);
HANDLE device;
bool m_can_use_spti;
bool OpenOK;
s32 last_read_mode;

54
plugins/cdvdGigaherz/src/Windows/IOCtlSrc.cpp
View File

@ -18,6 +18,12 @@
#include <winioctl.h>
#include <ntddcdvd.h>
#include <ntddcdrm.h>
// "typedef ignored" warning will disappear once we move to the Windows 10 SDK.
#pragma warning (push)
#pragma warning (disable: 4091)
#include <ntddscsi.h>
#pragma warning (pop)
#include <cstddef>
#include <cstdlib>
@ -284,13 +290,15 @@ s32 IOCtlSrc::Reopen()
DWORD size;
OpenOK = false;
// SPTI only works if the device is opened with GENERIC_WRITE access.
m_can_use_spti = true;
device = CreateFile(fName, GENERIC_READ|GENERIC_WRITE|FILE_READ_ATTRIBUTES, share, NULL, OPEN_EXISTING, flags, 0);
if(device==INVALID_HANDLE_VALUE)
{
device = CreateFile(fName, GENERIC_READ|FILE_READ_ATTRIBUTES, share, NULL, OPEN_EXISTING, flags, 0);
if(device==INVALID_HANDLE_VALUE)
return -1;
m_can_use_spti = false;
}
// Dual layer DVDs cannot read from layer 1 without this ioctl
DeviceIoControl(device, FSCTL_ALLOW_EXTENDED_DASD_IO, nullptr, 0, nullptr, 0, &size, nullptr);
@ -624,6 +632,8 @@ s32 IOCtlSrc::ReadSectors2048(u32 sector, u32 count, char *buffer)
}
// FIXME: Probably doesn't work if the sectors to be read are from two tracks
// of different types.
s32 IOCtlSrc::ReadSectors2352(u32 sector, u32 count, char *buffer)
{
RAW_READ_INFO rri;
@ -632,6 +642,48 @@ s32 IOCtlSrc::ReadSectors2352(u32 sector, u32 count, char *buffer)
if(!OpenOK) return -1;
if (m_can_use_spti)
{
struct sptdinfo
{
SCSI_PASS_THROUGH_DIRECT info;
char sense_buffer[20];
} sptd = {};
// READ CD command
sptd.info.Cdb[0] = 0xBE;
// Don't care about sector type.
sptd.info.Cdb[1] = 0;
sptd.info.Cdb[2] = (sector >> 24) & 0xFF;
sptd.info.Cdb[3] = (sector >> 16) & 0xFF;
sptd.info.Cdb[4] = (sector >> 8) & 0xFF;
sptd.info.Cdb[5] = sector & 0xFF;
sptd.info.Cdb[6] = (count >> 16) & 0xFF;
sptd.info.Cdb[7] = (count >> 8) & 0xFF;
sptd.info.Cdb[8] = count & 0xFF;
// Sync + all headers + user data + EDC/ECC. Excludes C2 + subchannel
sptd.info.Cdb[9] = 0xF8;
sptd.info.Cdb[10] = 0;
sptd.info.Cdb[11] = 0;
sptd.info.CdbLength = 12;
sptd.info.Length = sizeof(SCSI_PASS_THROUGH_DIRECT);
sptd.info.DataIn = SCSI_IOCTL_DATA_IN;
sptd.info.DataTransferLength = 2352 * count;
sptd.info.DataBuffer = buffer;
sptd.info.SenseInfoLength = sizeof(sptd.sense_buffer);
sptd.info.SenseInfoOffset = offsetof(sptdinfo, sense_buffer);
sptd.info.TimeOutValue = 5;
if (DeviceIoControl(device, IOCTL_SCSI_PASS_THROUGH_DIRECT, &sptd,
sizeof(sptd), &sptd, sizeof(sptd), &size, nullptr))
{
if (sptd.info.DataTransferLength == 2352 * count)
return 0;
}
printf(" * CDVD: SPTI failed reading sectors %u-%u\n", sector, sector + count - 1);
}
rri.DiskOffset.QuadPart=sector*(u64)2048;
rri.SectorCount=count;