🚀 go-pugleaf

"Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
news:4367e9aa@newsgroups.borland.com...

>  I need to play audio-cds from within my application.  The problem
> is that both TMediaPlayer and mci APIs seem to open always a
> "default" CD-ROM drive, that is I cannot set the CD-ROM drive
> in which the Audio cd is :-(

TMediaPlayer does not support what you are looking for.

The MCI API, on the other hand, has an MCI_OPEN_TYPE_ID flag available for
the MCI_OPEN command.  That flag will allow you to specify the index of the
specific CD-ROM drive that you want to use.  You can use the MCI_SYSINFO
command to determine how many CD-ROM drives are available to MCI.  If
successful, the MCI_OPEN command returns the ID of the device, which you can
then use to send other commands to that same device.

> I'd need seek capabilities into the played track too

There is an MCI_SEEK command available for that.  Make sure to use the
MCI_SET command after opening the CD-ROM drive to set the device's time
format to MCI_FORMAT_TMSF (track/minute/second/frame).

You can use the MCI_MAKE_TMSF() macro when specifying time stamps to the
MCI_PLAY and MCI_SEEK commands.  Use the MCI_TMSF_TRACK(),
MCI_TMSF_MINUTE(), MCI_TMSF_SECOND(), and MCI_TMSF_FRAME() macros when
retreiving the individual values from time stamps that you obtain.

You can use the MCI_STATUS command to query information about the individual
tracks, such as their lengths.


Gambit

GREAT Mr. Gambit,
 I didn't know You are an expert of mutlimedia developing too ... Is there 
anything You can't do with BCB? :-)
I'll try what you suggest right now :)
Thank You very much again,
Best regards,
Stefano B.

"Remy Lebeau (TeamB)" <no.spam@no.spam.com> ha scritto nel messaggio 
news:4367fa1f@newsgroups.borland.com...
>
> "Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
> news:4367e9aa@newsgroups.borland.com...
>
>>  I need to play audio-cds from within my application.  The problem
>> is that both TMediaPlayer and mci APIs seem to open always a
>> "default" CD-ROM drive, that is I cannot set the CD-ROM drive
>> in which the Audio cd is :-(
>
> TMediaPlayer does not support what you are looking for.
>
> The MCI API, on the other hand, has an MCI_OPEN_TYPE_ID flag available for
> the MCI_OPEN command.  That flag will allow you to specify the index of 
> the
> specific CD-ROM drive that you want to use.  You can use the MCI_SYSINFO
> command to determine how many CD-ROM drives are available to MCI.  If
> successful, the MCI_OPEN command returns the ID of the device, which you 
> can
> then use to send other commands to that same device.
>
>> I'd need seek capabilities into the played track too
>
> There is an MCI_SEEK command available for that.  Make sure to use the
> MCI_SET command after opening the CD-ROM drive to set the device's time
> format to MCI_FORMAT_TMSF (track/minute/second/frame).
>
> You can use the MCI_MAKE_TMSF() macro when specifying time stamps to the
> MCI_PLAY and MCI_SEEK commands.  Use the MCI_TMSF_TRACK(),
> MCI_TMSF_MINUTE(), MCI_TMSF_SECOND(), and MCI_TMSF_FRAME() macros when
> retreiving the individual values from time stamps that you obtain.
>
> You can use the MCI_STATUS command to query information about the 
> individual
> tracks, such as their lengths.
>
>
> Gambit
>
> 

"Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
news:436880f8@newsgroups.borland.com...

>  I didn't know You are an expert of mutlimedia developing too ...

I'm not.  But I do know how to read documentation ;-)  Everything you asked
for is in the Win32 Multimedia API documention.


Gambit

Sorry Mr. Gambit :( I really can't manage to get anything :(
By using the following code:
 MCI_SYSINFO_PARMS mcisysinfo;
 char Buffer[256];
 ZeroMemory(&mcisysinfo,sizeof(MCI_SYSINFO_PARMS));
 mcisysinfo.lpstrReturn=Buffer;
 mcisysinfo.dwRetSize=256;
 mcisysinfo.wDeviceType=MCI_DEVTYPE_CD_AUDIO;
 MCIERROR 
errcode=mciSendCommand(NULL,MCI_SYSINFO,MCI_SYSINFO_QUANTITY,(DWORD)&mcisysinfo);
 if(errcode==0)
 {
  RichEdit1->Lines->Add("Number of CD_ROM: "+IntToStr(Buffer));
 }
 else
 {
  mciGetErrorString(errcode,Buffer,256);
  RichEdit1->Lines->Add(AnsiString(Buffer));
 }

I get "Number of CD_ROM:  1" while I have 3 CDRoms (2 physique and one 
virtual) in my (WInXP Pro) system.
If I try to get the name by MCI_SYSINFO_NAME i get "cdaudio" and not 
something like "Plextor DVDR ..." :(
 Please Can You be so kind to write 2 lines of code showing how to get a 
list of my CD-Drives and how to open a selected one?
Thank You very much in advance,
Stefano B.

"Remy Lebeau (TeamB)" <no.spam@no.spam.com> ha scritto nel messaggio 
news:4367fa1f@newsgroups.borland.com...
>
> "Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
> news:4367e9aa@newsgroups.borland.com...
>
>>  I need to play audio-cds from within my application.  The problem
>> is that both TMediaPlayer and mci APIs seem to open always a
>> "default" CD-ROM drive, that is I cannot set the CD-ROM drive
>> in which the Audio cd is :-(
>
> TMediaPlayer does not support what you are looking for.
>
> The MCI API, on the other hand, has an MCI_OPEN_TYPE_ID flag available for
> the MCI_OPEN command.  That flag will allow you to specify the index of 
> the
> specific CD-ROM drive that you want to use.  You can use the MCI_SYSINFO
> command to determine how many CD-ROM drives are available to MCI.  If
> successful, the MCI_OPEN command returns the ID of the device, which you 
> can
> then use to send other commands to that same device.
>
>> I'd need seek capabilities into the played track too
>
> There is an MCI_SEEK command available for that.  Make sure to use the
> MCI_SET command after opening the CD-ROM drive to set the device's time
> format to MCI_FORMAT_TMSF (track/minute/second/frame).
>
> You can use the MCI_MAKE_TMSF() macro when specifying time stamps to the
> MCI_PLAY and MCI_SEEK commands.  Use the MCI_TMSF_TRACK(),
> MCI_TMSF_MINUTE(), MCI_TMSF_SECOND(), and MCI_TMSF_FRAME() macros when
> retreiving the individual values from time stamps that you obtain.
>
> You can use the MCI_STATUS command to query information about the 
> individual
> tracks, such as their lengths.
>
>
> Gambit
>
> 

"Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
news:4368a145@newsgroups.borland.com...

>  mcisysinfo.wDeviceType=MCI_DEVTYPE_CD_AUDIO;
>  MCIERROR
>
errcode=mciSendCommand(NULL,MCI_SYSINFO,MCI_SYSINFO_QUANTITY,(DWORD)&mcisysi
nfo);

Try specifying MCI_DEVTYPE_CD_AUDIO instead of NULL as the IDDevice
parameter of mciSendCommand():

    MCI_SYSINFO_PARMS params = {0};
    char Buffer[256] = {0};
    params.lpstrReturn = Buffer;
    params.dwRetSize = 256;
    params.wDeviceType = MCI_DEVTYPE_CD_AUDIO;

    MCIERROR errcode = mciSendCommand(MCI_DEVTYPE_CD_AUDIO, MCI_SYSINFO,
MCI_SYSINFO_QUANTITY, (DWORD)&params);

If that doesn't work, then you will just have to enumerate the drive letters
manually by using the GetLogicalDriveStrings() and GetDriveType() functions:

    char DriveLetters[108] = {0};
    if( GetLogicalDriveStrings(sizeof(DriveLetters), DriveLetters) )
    {
        char *Drive = DriveLetters;
        while( *Drive != '\0' )
        {
            if( GetDeviceType(Drive) == DRIVE_CDROM )
                // use Drive as needed...
            Drive += 4;
        }
    }

When opening a device, you can open a specific drive letter without knowing
its index in the MCI table by specifying the drive letter in the
lpstrElementName member of the MCI_OPEN_PARMS structure:

    MCI_OPEN_PARMS params = {0};
    params.lpstrDeviceType = (LPSTR) MAKELONG(MCI_DEVTYPE_CD_AUDIO, 0);
    params.lpstrElementName = "X:";

    errcode = mciSendCommand(0, MCI_OPEN, MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID |
MCI_OPEN_ELEMENT, (DWORD)&params);

You can then send commands to the device ID that is returned.

Alternatively, you can use mciSendString() instead of mciSendCommand(),
using the "open" string:

    char Buffer[256];
    errcode = mciSendString("open X: type cdaudio alias MyCD", Buffer, 256,
NULL);

You can then send commands to the opened device using the "MyCD" alias (you
can name the alias whatever you want).


Gambit

"Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
news:4368a145@newsgroups.borland.com...

> If I try to get the name by MCI_SYSINFO_NAME i get "cdaudio"
> and not something like "Plextor DVDR ..." :(

After you determine the drive letter of your CD-ROM drives, try calling
GetVolumeInformation() on each one.


Gambit

Hi Mr. Lebeau,
 Sorry for the late I answer, but my studies keep me very busy :-(
You're great, guess what: I had posted other help messages for this subject 
in microsoft and I bet who would answer first with the right tip of 
course...
Guess who won :-)
Maybe you are not an expert of multimedia but according to me you are more 
prepared than many MS gurus of that subject, and of course  more kind ... I 
think their way to help only pass through a payment :-(
 Ok I already wrote a component to control CD-Audio, it's only a temporary 
version, but if you need it ask me, I have no a web page and I think BCB 
download site should be only for well working code :-) mine are only student 
tests :-)
THANK YOU VERY MUCH for all your help,
Stefano B.


"Remy Lebeau (TeamB)" <no.spam@no.spam.com> ha scritto nel messaggio 
news:43691cc2$1@newsgroups.borland.com...
>
> "Stefano Bonifazi" <stefboombastic@libero.it> wrote in message
> news:4368a145@newsgroups.borland.com...
>
>>  mcisysinfo.wDeviceType=MCI_DEVTYPE_CD_AUDIO;
>>  MCIERROR
>>
> errcode=mciSendCommand(NULL,MCI_SYSINFO,MCI_SYSINFO_QUANTITY,(DWORD)&mcisysi
> nfo);
>
> Try specifying MCI_DEVTYPE_CD_AUDIO instead of NULL as the IDDevice
> parameter of mciSendCommand():
>
>    MCI_SYSINFO_PARMS params = {0};
>    char Buffer[256] = {0};
>    params.lpstrReturn = Buffer;
>    params.dwRetSize = 256;
>    params.wDeviceType = MCI_DEVTYPE_CD_AUDIO;
>
>    MCIERROR errcode = mciSendCommand(MCI_DEVTYPE_CD_AUDIO, MCI_SYSINFO,
> MCI_SYSINFO_QUANTITY, (DWORD)&params);
>
> If that doesn't work, then you will just have to enumerate the drive 
> letters
> manually by using the GetLogicalDriveStrings() and GetDriveType() 
> functions:
>
>    char DriveLetters[108] = {0};
>    if( GetLogicalDriveStrings(sizeof(DriveLetters), DriveLetters) )
>    {
>        char *Drive = DriveLetters;
>        while( *Drive != '\0' )
>        {
>            if( GetDeviceType(Drive) == DRIVE_CDROM )
>                // use Drive as needed...
>            Drive += 4;
>        }
>    }
>
> When opening a device, you can open a specific drive letter without 
> knowing
> its index in the MCI table by specifying the drive letter in the
> lpstrElementName member of the MCI_OPEN_PARMS structure:
>
>    MCI_OPEN_PARMS params = {0};
>    params.lpstrDeviceType = (LPSTR) MAKELONG(MCI_DEVTYPE_CD_AUDIO, 0);
>    params.lpstrElementName = "X:";
>
>    errcode = mciSendCommand(0, MCI_OPEN, MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID 
> |
> MCI_OPEN_ELEMENT, (DWORD)&params);
>
> You can then send commands to the device ID that is returned.
>
> Alternatively, you can use mciSendString() instead of mciSendCommand(),
> using the "open" string:
>
>    char Buffer[256];
>    errcode = mciSendString("open X: type cdaudio alias MyCD", Buffer, 256,
> NULL);
>
> You can then send commands to the opened device using the "MyCD" alias 
> (you
> can name the alias whatever you want).
>
>
> Gambit
>
> 

Stefano Bonifazi wrote:
> Hi all :-)
>  I need to play audio-cds from within my application.
> The problem is that both TMediaPlayer and mci APIs seem to open always a 
> "default" CD-ROM drive, that is I cannot set the CD-ROM drive in which the 
> Audio cd is :-(
> I'd need seek capabilities into the played track too
> Is there anybody who can tell me how to do or can suggest a good FREE 
> component/class to use?

I used TMediaPlayer to build my free CD/Media player (with FreeDB track title lookup and 
loads of other features) called MJPlayer at http://www.jacobsm.com/mjsoft.htm#mjplyr

-- 
Mark Jacobs
http://www.dkcomputing.co.uk