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ntdll: Fix CDROM raw reads. 

- Fix incorrect data sizes.
- Fix CDDA addressing.
- Implement XAForm2 mode on Linux.
This commit is contained in:
Petr Tesarik 2006-03-27 10:20:39 +02:00 committed by Alexandre Julliard
parent d74a62cfd7
commit 4c777d7466
1 changed files with 86 additions and 74 deletions
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160
dlls/ntdll/cdrom.c
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@ -1192,101 +1192,113 @@ static NTSTATUS CDROM_SetVolume(int fd, const VOLUME_CONTROL* vc)
/******************************************************************
* CDROM_RawRead
*
* Some features of this IOCTL are rather poorly documented and
* not really intuitive either:
*
* 1. Although the DiskOffset parameter is meant to be a
* byte offset into the disk, it is in fact the sector
* number multiplied by 2048 regardless of the actual
* sector size.
*
* 2. The least significant 11 bits of DiskOffset are ignored.
*
* 3. The TrackMode parameter has no effect on the sector
* size. The entire raw sector (i.e. 2352 bytes of data)
* is always returned. IMO the TrackMode is only used
* to check the correct sector type.
*
*/
static NTSTATUS CDROM_RawRead(int fd, const RAW_READ_INFO* raw, void* buffer, DWORD len, DWORD* sz)
{
int ret = STATUS_NOT_SUPPORTED;
int ret = STATUS_NOT_SUPPORTED;
int io = -1;
DWORD sectSize;
TRACE("RAW_READ_INFO: DiskOffset=%li,%li SectorCount=%li TrackMode=%i\n buffer=%p len=%li sz=%p\n",
raw->DiskOffset.u.HighPart, raw->DiskOffset.u.LowPart, raw->SectorCount, raw->TrackMode, buffer, len, sz);
if (len < raw->SectorCount * 2352) return STATUS_BUFFER_TOO_SMALL;
#if defined(linux)
if (raw->DiskOffset.u.HighPart & ~2047) {
WARN("DiskOffset points to a sector >= 2**32\n");
return ret;
}
switch (raw->TrackMode)
{
case YellowMode2: sectSize = 2336; break;
case XAForm2: sectSize = 2328; break;
case CDDA: sectSize = 2352; break;
default: return STATUS_INVALID_PARAMETER;
case YellowMode2:
case XAForm2:
{
DWORD lba = raw->DiskOffset.QuadPart >> 11;
struct cdrom_msf* msf;
PBYTE *bp; /* current buffer pointer */
int i;
if ((lba + raw->SectorCount) >
((1 << 8*sizeof(msf->cdmsf_min0)) * CD_SECS * CD_FRAMES
- CD_MSF_OFFSET)) {
WARN("DiskOffset not accessible with MSF\n");
return ret;
}
/* Linux reads only one sector at a time.
* ioctl CDROMREADRAW takes struct cdrom_msf as an argument
* on the contrary to what header comments state.
*/
lba += CD_MSF_OFFSET;
for (i = 0, bp = buffer; i < raw->SectorCount;
i++, lba++, bp += 2352)
{
msf = (struct cdrom_msf*)bp;
msf->cdmsf_min0 = lba / CD_FRAMES / CD_SECS;
msf->cdmsf_sec0 = lba / CD_FRAMES % CD_SECS;
msf->cdmsf_frame0 = lba % CD_FRAMES;
io = ioctl(fd, CDROMREADRAW, msf);
if (io != 0)
{
*sz = 2352 * i;
return CDROM_GetStatusCode(io);
}
}
break;
}
if (len < raw->SectorCount * sectSize) return STATUS_BUFFER_TOO_SMALL;
/* strangely enough, it seems that sector offsets are always indicated with a size of 2048,
* even if a larger size if read...
*/
#if defined(linux)
case CDDA:
{
struct cdrom_read_audio cdra;
struct cdrom_msf* msf;
int i;
LONGLONG t = ((LONGLONG)raw->DiskOffset.u.HighPart << 32) +
raw->DiskOffset.u.LowPart + CD_MSF_OFFSET;
switch (raw->TrackMode)
{
case YellowMode2:
/* Linux reads only one sector at a time.
* ioctl CDROMREADMODE2 takes struct cdrom_msf as an argument
* on the contrary to what header comments state.
*/
for (i = 0; i < raw->SectorCount; i++, t += sectSize)
{
msf = (struct cdrom_msf*)buffer + i * sectSize;
msf->cdmsf_min0 = t / CD_FRAMES / CD_SECS;
msf->cdmsf_sec0 = t / CD_FRAMES % CD_SECS;
msf->cdmsf_frame0 = t % CD_FRAMES;
io = ioctl(fd, CDROMREADMODE2, msf);
if (io != 0)
{
*sz = sectSize * i;
return CDROM_GetStatusCode(io);
}
}
break;
case XAForm2:
FIXME("XAForm2: NIY\n");
return ret;
case CDDA:
/* FIXME: the output doesn't seem 100% correct... in fact output is shifted
* between by NT2K box and this... should check on the same drive...
* otherwise, I fear a 2352/2368 mismatch somewhere in one of the drivers
* (linux/NT).
* Anyway, that's not critical at all. We're talking of 16/32 bytes, we're
* talking of 0.2 ms of sound
*/
/* 2048 = 2 ** 11 */
if (raw->DiskOffset.u.HighPart & ~2047) FIXME("Unsupported value\n");
cdra.addr.lba = ((raw->DiskOffset.u.LowPart >> 11) |
(raw->DiskOffset.u.HighPart << (32 - 11))) - 1;
FIXME("reading at %u\n", cdra.addr.lba);
cdra.addr_format = CDROM_LBA;
cdra.nframes = raw->SectorCount;
cdra.buf = buffer;
io = ioctl(fd, CDROMREADAUDIO, &cdra);
break;
default:
FIXME("NIY: %d\n", raw->TrackMode);
return ret;
}
cdra.addr.lba = raw->DiskOffset.QuadPart >> 11;
TRACE("reading at %u\n", cdra.addr.lba);
cdra.addr_format = CDROM_LBA;
cdra.nframes = raw->SectorCount;
cdra.buf = buffer;
io = ioctl(fd, CDROMREADAUDIO, &cdra);
break;
}
default:
FIXME("NIY: %d\n", raw->TrackMode);
return STATUS_INVALID_PARAMETER;
}
#else
switch (raw->TrackMode)
{
switch (raw->TrackMode)
{
case YellowMode2:
FIXME("YellowMode2: NIY\n");
return ret;
case XAForm2:
FIXME("XAForm2: NIY\n");
return ret;
case CDDA:
FIXME("CDDA: NIY\n");
return ret;
}
case YellowMode2:
FIXME("YellowMode2: NIY\n");
return ret;
case XAForm2:
FIXME("XAForm2: NIY\n");
return ret;
case CDDA:
FIXME("CDDA: NIY\n");
return ret;
default:
FIXME("NIY: %d\n", raw->TrackMode);
return STATUS_INVALID_PARAMETER;
}
#endif
*sz = sectSize * raw->SectorCount;
*sz = 2352 * raw->SectorCount;
ret = CDROM_GetStatusCode(io);
return ret;
}