PATCH: Fixes problems with the cdrom driver not reporting certaindata correctly

[Waldeck Schutzer <schutzer@math.rutgers.edu>]

Some applications I tested failed to work correctly because of 
incomplete/missing data received from the cdrom driver. The following 
issues are addressed and should be fixed by this patch:

1. The field Length in CDROM_TOC was not being reported at all (it could 
contain garbage).

2. GetDiskData would incorrectly report as audio for a cd with mixed 
content.

3. IOCTL_CDROM_GET_DRIVE_GEOMETRY was unimplemented.

I appologize that the cdrom patch I sent before was incorrect, but now 
I'm pretty sure that this one is fine. I'm still working on the mci 
driver regarding this issue involving applications being unable to play 
sounds in MSF.

Best,
Waldeck


Index: wine/dlls/ntdll/cdrom.c
===================================================================
RCS file: /home/wine/wine/dlls/ntdll/cdrom.c,v
retrieving revision 1.24
diff -u -p -r1.24 cdrom.c
--- wine/dlls/ntdll/cdrom.c	23 Jan 2003 21:32:36 -0000	1.24
+++ wine/dlls/ntdll/cdrom.c	29 Jan 2003 05:17:56 -0000
@@ -74,6 +74,11 @@
 
 WINE_DEFAULT_DEBUG_CHANNEL(cdrom);
 
+#define FRAME_OF_ADDR(a) (((int)(a)[1] * CD_SECS + (a)[2]) * CD_FRAMES + (a)[3])
+#define FRAME_OF_TOC(toc, idx)  FRAME_OF_ADDR((toc).TrackData[idx - (toc).FirstTrack].Address)
+static DWORD CDROM_ReadTOC(int, CDROM_TOC*);
+
+
 #ifdef linux
 
 # ifndef IDE6_MAJOR
@@ -380,15 +385,22 @@ static DWORD CDROM_GetDeviceNumber(int d
 
 static DWORD CDROM_GetDriveGeometry(int dev, DISK_GEOMETRY* dg)
 {
-#if 0
-    dg->Cylinders.s.LowPart = 1; /* FIXME */
-    dg->Cylinders.s.HighPart = 0; /* FIXME */
-    dg->MediaType = 1; /* FIXME */
-    dg->TracksPerCylinder = 1; /* FIXME */
-    dg->SectorsPerTrack = 1; /* FIXME */
-    dg->BytesPerSector= 1; /* FIXME */
-#endif
-    return STATUS_NOT_SUPPORTED;
+  CDROM_TOC   toc;
+  DWORD ret = 0;
+  int fsize=0;
+
+  if ((ret = CDROM_ReadTOC(dev, &toc)) != 0) return ret;
+
+  fsize = FRAME_OF_TOC(toc, toc.LastTrack+1)
+        - FRAME_OF_TOC(toc, 1); /* Total size in frames */
+  
+  dg->Cylinders.s.LowPart = fsize / (64 * 32); 
+  dg->Cylinders.s.HighPart = 0; 
+  dg->MediaType = RemovableMedia;  
+  dg->TracksPerCylinder = 64; 
+  dg->SectorsPerTrack = 32;  
+  dg->BytesPerSector= 2048; 
+  return ret;
 }
 
 /**************************************************************************
@@ -449,7 +461,7 @@ static DWORD CDROM_ReadTOC(int dev, CDRO
     DWORD       ret = STATUS_NOT_SUPPORTED;
 
 #if defined(linux)
-    int                         i, io = -1;
+    int                         i, io = -1, tsz;
     struct cdrom_tochdr		hdr;
     struct cdrom_tocentry	entry;
 
@@ -461,6 +473,10 @@ static DWORD CDROM_ReadTOC(int dev, CDRO
     }
     toc->FirstTrack = hdr.cdth_trk0;
     toc->LastTrack  = hdr.cdth_trk1;
+    tsz = sizeof(toc->FirstTrack) + sizeof(toc->LastTrack)
+       + sizeof(TRACK_DATA) * (hdr.cdth_trk1-hdr.cdth_trk0+2);
+    toc->Length[0] = tsz >> 8;
+    toc->Length[1] = tsz;
 
     TRACE("from=%d to=%d\n", toc->FirstTrack, toc->LastTrack);
 
@@ -555,7 +571,7 @@ static DWORD CDROM_GetDiskData(int dev, 
     if ((ret = CDROM_ReadTOC(dev, &toc)) != 0) return ret;
     data->DiskData = 0;
     for (i = toc.FirstTrack; i <= toc.LastTrack; i++) {
-        if (toc.TrackData[i].Control & 0x04)
+        if (toc.TrackData[i-toc.FirstTrack].Control & 0x04)
             data->DiskData |= CDROM_DISK_DATA_TRACK;
         else
             data->DiskData |= CDROM_DISK_AUDIO_TRACK;