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Adjust MSF->LBA conversion in Windows IOCTL CD-ROM code.

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Improve raw sector read in Windows IOCTL CD-ROM code.
Patch from Battler.
This commit is contained in:
TomW 2016-04-04 11:08:23 +01:00
commit 99df1f6d87
1 changed files with 5 additions and 15 deletions
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20
src/cdrom-ioctl.c
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@ -34,7 +34,7 @@ static HANDLE hIOCTL;
static CDROM_TOC toc;
static int tocvalid = 0;
#define MSFtoLBA(m,s,f) (((((m*60)+s)*75)+f)-150)
#define MSFtoLBA(m,s,f) ((((m*60)+s)*75)+f)
enum
{
@ -65,7 +65,7 @@ void ioctl_audio_callback(int16_t *output, int len)
{
if (ioctl_cd_pos < ioctl_cd_end)
{
in.DiskOffset.LowPart = ioctl_cd_pos * 2048;
in.DiskOffset.LowPart = (ioctl_cd_pos - 150) * 2048;
in.DiskOffset.HighPart = 0;
in.SectorCount = 1;
in.TrackMode = CDDA;
@ -147,6 +147,8 @@ static void ioctl_playaudio(uint32_t pos, uint32_t len, int ismsf)
ioctl_cd_pos = pos;// + 150;
ioctl_cd_end = len;// + 150;
ioctl_cd_state = CD_PLAYING;
if (ioctl_cd_pos < 150)
ioctl_cd_pos = 150;
pclog("Audio start %08X %08X %i %i %i\n", ioctl_cd_pos, ioctl_cd_end, ioctl_cd_state, cd_buflen, len);
/* CDROM_PLAY_AUDIO_MSF msf;
long size;
@ -493,20 +495,8 @@ static void ioctl_readsector_raw(uint8_t *b, int sector)
ioctl_cd_state = CD_STOPPED;
pos.QuadPart=sector*2048;
ioctl_open(0);
SetFilePointer(hIOCTL,pos.LowPart,&pos.HighPart,FILE_BEGIN);
ReadFile(hIOCTL,b+16,2048,&size,NULL);
DeviceIoControl(hIOCTL, IOCTL_CDROM_RAW_READ, NULL, 0, b, 1, &size, NULL);
ioctl_close();
/* sync bytes */
b[0] = 0;
memset(b + 1, 0xff, 10);
b[11] = 0;
b += 12;
lba_to_msf(b, sector);
b[3] = 1; /* mode 1 data */
b += 4;
b += 2048;
memset(b, 0, 288);
}
static int ioctl_readtoc(unsigned char *b, unsigned char starttrack, int msf, int maxlen, int single)