[Bug 23975] New: mcicda wants to open the nth cdrom in the system

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=23975

           Summary: mcicda wants to open the nth cdrom in the system
           Product: Wine
           Version: 20020228
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winmm&mci
        AssignedTo: wine-bugs at winehq.org
        ReportedBy: hoehle at users.sourceforge.net
                CC: eric.pouech at orange.fr


Eric,

I wanted to query you about the change you introduced 2002-01-13.
As the subject says, MCI_Open opens the nth drive of type CD-ROM,
where N is the dwDeviceID passed to the command.

Currently Wine passes in the device ID that will be used if Open succeeds, i.e.
the number of open MCI devices (I believe it was 0 at some time in the past).
Therefore
open cdaudio alias c will work, while

open new type waveaudio alias w
open avivideo alias a
open cdaudio alias e
will likely fail in Wine, unless you have 3 CD-ROMs.
This is a bug.  It works in native.

I found no documentation for this N thing in MSDN.  Where does it come from?

My own testing -- as far as it can go with a single drive -- suggests
that there's no such functionality in native.  Quite to the contrary,
using SHAREABLE, I could open a device multiple times using

mciSendCommand(N>0, MCI_OPEN,
  MCI_OPEN_TYPE|MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
  (DWORD_PTR)&parm);
(Not using SHAREABLE seems to reveal an interesting bug in native for N>0).

OTOH, perhaps this functionality exists in the driver, i.e. not accessible at
the level of mciSendCommand and the bug is in Wine's MCI that does not pass a 0
as default id (it should pass 0 and stuff the new ID in openparms.wDeviceID)?

BTW, you may be interested by the mcicda patches I recently submitted.

Regards,
 Jörg Höhle.

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