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Merge pull request #56 from rakslice/win_cdrom

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Fix for autodetected physical cdroms in Windows
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kanjitalk755 2020-09-22 18:33:09 +09:00 committed by GitHub
commit 9708089c1e
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2 changed files with 42 additions and 22 deletions
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47
BasiliskII/src/Windows/sys_windows.cpp
View File

@ -84,7 +84,7 @@ static char *sector_buffer = NULL;
// Prototypes
static bool is_cdrom_readable(file_handle *fh);
static DWORD file_offset_read(HANDLE fh, loff_t offset, int count, char *buf);
/*
* Initialization
@ -266,12 +266,42 @@ void SysAddSerialPrefs(void)
* Can't give too much however, would be annoying, this is difficult..
*/
static inline int cd_read_with_retry(file_handle *fh, ULONG LBA, int count, char *buf )
static inline int cd_read_with_retry(file_handle *fh, ULONG offset, int count, char *buf )
{
if (!fh || !fh->fh)
return 0;
return CdenableSysReadCdBytes(fh->fh, LBA, count, buf);
DWORD bytes_read = CdenableSysReadCdBytes(fh->fh, offset, count, buf);
if (bytes_read == 0) {
// fall back to logical volume handle read in the case where there's no cdenable
bytes_read = file_offset_read(fh->fh, offset, count, buf);
}
return bytes_read;
}
/*
* Generic offset read function for a file or a device that behaves like one
*/
static DWORD file_offset_read(HANDLE fh, loff_t offset, int count, char *buf)
{
// Seek to position
LONG lo = (LONG)offset;
LONG hi = (LONG)(offset >> 32);
DWORD r = SetFilePointer(fh, lo, &hi, FILE_BEGIN);
if (r == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) {
return 0;
}
DWORD bytes_read;
// Read data
if (ReadFile(fh, buf, count, &bytes_read, NULL) == 0)
bytes_read = 0;
return bytes_read;
}
static int cd_read(file_handle *fh, cachetype *cptr, ULONG LBA, int count, char *buf)
@ -581,16 +611,7 @@ size_t Sys_read(void *arg, void *buffer, loff_t offset, size_t length)
DWORD bytes_read = 0;
if (fh->is_file) {
// Seek to position
LONG lo = (LONG)offset;
LONG hi = (LONG)(offset >> 32);
DWORD r = SetFilePointer(fh->fh, lo, &hi, FILE_BEGIN);
if (r == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR)
return 0;
// Read data
if (ReadFile(fh->fh, buffer, length, &bytes_read, NULL) == 0)
bytes_read = 0;
bytes_read = file_offset_read(fh->fh, offset, length, (char *)buffer);
}
else if (fh->is_cdrom) {
int bytes_left, try_bytes, got_bytes;

17
BasiliskII/src/cdrom.cpp
View File

@ -303,15 +303,14 @@ void CDROMInit(void)
if (PrefsFindString("cdrom", 0) == NULL) {
SysAddCDROMPrefs();
}
else {
// Add drives specified in preferences
int index = 0;
const char *str;
while ((str = PrefsFindString("cdrom", index++)) != NULL) {
void *fh = Sys_open(str, true);
if (fh)
drives.push_back(cdrom_drive_info(fh));
}
// Add drives specified in preferences
int index = 0;
const char *str;
while ((str = PrefsFindString("cdrom", index++)) != NULL) {
void *fh = Sys_open(str, true);
if (fh)
drives.push_back(cdrom_drive_info(fh));
}
if (!drives.empty()) { // set to first drive by default