Using the sound system

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 2:43 pm

Restored from previous forum. Originally posted by TerryHough.

I'm having a problem using the sound system. Basically, I am using code directly from the SOUNDS example program.

Code: Select all

If InitSound() = 0
  MessageRequester("Error", "Can't open DirectX 7 or no sound card is available",  0)
  End
EndIf
; ---- snip ----
LoadSound(0, "online.wav")
; ---- snip ----
PlaySound(0,0)

And this works perfectly, except...

I have another program running in the tray that uses the sound system also. While my PureBasic program is running, it cannot play a sound. It doesn't quit or fail, it just doesn't play the sound.

You can duplicate this by running the sound program example and trying to play a sound with another program (Eg. sounds in the Control Panel). That will tell you the sound system is busy or unavailable.

So, here is my question... Is there a way to relinquish control of the sound system in a running PureBasic program. I only need it periodically and briefly. So, can I init the sound system, play my sound, and then release it, init it again later when needed, play a sound, then release it , etc.? Or, better yet, share the sound system easily?

This is probably pretty easy, but I just don't see a solution.

Thanks in advance
Terry

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 5:22 pm

Restored from previous forum. Originally posted by tranquil.

It depends on which output device the sound is done.
The best way should be the DirectSound Engine. Some players uses a direct Wave-Output to the soundcard and so, only one instance can access the device. Dont know which way PB is doing it. But you can test it with Winamp for eg. There is a Wave and a DirectSound output DLL support.

If you use direct sound all applications cound access the soundcard at the same time.

Mike

Tranquilizer/ Secretly!
http://www.secretly.de
Registred PureBasic User
System: Windows 2000 Server, 512 MB Ram, GeForce4200 TI 128 MB DDR, Hercules Theater 6.1 DTS Sound
System 2: Mobile Pentium 4 2.4GHz 512 MB DDR GeForce4 420-32, Windows XP Home

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 6:06 pm

Restored from previous forum. Originally posted by MrVainSCL.

hi TerryHough,
what kind of soundcard do you have? maybe yoru card dont support dulpex? So you can only use one chan every time?

greetz
MrVainSCL! aka Thorsten

PIII450, 256MB Ram, 80GB HD + 6,4 GB, RivaTNT, DirectX9.0, SB AWE64, Win2000 + all Updates...

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 6:49 pm

Restored from previous forum. Originally posted by TerryHough.

Originally posted by MrVainSCL

what kind of soundcard do you have? maybe yoru card dont support dulpex? So you can only use one chan every time?

C-Media 8738 PCI. Supposed to be top of the line.. but who knows.

@tranquil
Thanks for your answer. But I am a real novice at this and don't have a clue about WinAmp, so I am not sure what you are suggesting.

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 8:35 pm

Restored from previous forum. Originally posted by GPI.

When i tell winamp to use Direct sound, a PB-File kann play sound. But if winamp use the out_wave.dll, no other programm can play.

I think, that you have the same problem. The programm in the tray use the same way like the out_wave.dll, so no other application can play any sound.

GPI

PII 333, 256MB, Asus TNT2Ultra 32MB, AWE Gold 64 4MB

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 9:26 pm

Restored from previous forum. Originally posted by tranquil.

@GPI That is exactly what Ive tried to say.

@MrVain: Duplex/ Full Duplex/ Half Duplex has nothing to do with the playback of sounds. DirectSound mixes the Wave-Data and send them to the soundcard. You need eg. Full Duplex to record and playback audiofiles at once on a soundcard. But I dont know one soundcard which not supports full duplex mode.

Mike

Tranquilizer/ Secretly!
http://www.secretly.de
Registred PureBasic User
System: Windows 2000 Server, 512 MB Ram, GeForce4200 TI 128 MB DDR, Hercules Theater 6.1 DTS Sound
System 2: Mobile Pentium 4 2.4GHz 512 MB DDR GeForce4 420-32, Windows XP Home

BackupUser · Post by **BackupUser** » Wed Feb 12, 2003 9:51 pm

Restored from previous forum. Originally posted by MrVainSCL.

hi tranquil,
i know a card that dont support full duplex (due fact of this feature its very expensive) ...
Its called Prelude Soundcard, hehe

greetz
MrVainSCL! aka Thorsten

PIII450, 256MB Ram, 80GB HD + 6,4 GB, RivaTNT, DirectX9.0, SB AWE64, Win2000 + all Updates...

BackupUser · Post by **BackupUser** » Thu Feb 13, 2003 12:13 am

Restored from previous forum. Originally posted by Pupil.

All this has been discussed before:
viewtopic.php?t=2608

BackupUser · Post by **BackupUser** » Thu Feb 13, 2003 12:49 pm

Restored from previous forum. Originally posted by TerryHough.

Originally posted by Pupil

All this has been discussed before:
viewtopic.php?t=2608

Thanks for the reference to the other thread, Pupil.

The API method discussed in the above reference solved my problem.

Playsound_("xxxx.wav",0,0) works without blocking the other sounds.

Unfortunately, my API Help file has no reference to the command or any other requirements, so I don't know how it works.

Is there a way to make sure a sound system exists before issuing the above command? I would think that if a sound system didn't exist, the Playsound command would create a problem.

Terry

BackupUser · Post by **BackupUser** » Thu Feb 13, 2003 1:01 pm

Restored from previous forum. Originally posted by GPI.

The PlaySound function plays a sound specified by the given filename, resource, or system event. (A system event may be associated with a sound in the registry or in the WIN.INI file.)

long = PlaySound (lpszName As String,hModule As Long, dwFlags As Long)

Â· pszSound
A string that specifies the sound to play. If this parameter is NULL, any currently playing waveform sound is stopped. To stop a non-waveform sound, specify SND_PURGE in the fdwSound parameter.
Three flags in fdwSound (SND_ALIAS, SND_FILENAME, and SND_RESOURCE) determine whether the name is interpreted as an alias for a system event, a filename, or a resource identifier. If none of these flags are specified, PlaySound searches the registry or the WIN.INI file for an association with the specified sound name. If an association is found, the sound event is played. If no association is found in the registry, the name is interpreted as a filename.

Â· hmod
Handle of the executable file that contains the resource to be loaded. This parameter must be NULL unless SND_RESOURCE is specified in fdwSound.

Â· fdwSound
Flags for playing the sound. The following values are defined:
SND_APPLICATION
The sound is played using an application-specific association.
SND_ALIAS
The pszSound parameter is a system-event alias in the registry or the WIN.INI file. Do not use with either SND_FILENAME or SND_RESOURCE.
SND_ALIAS_ID
The pszSound parameter is a predefined sound identifier.
SND_ASYNC
The sound is played asynchronously and PlaySound returns immediately after beginning the sound. To terminate an asynchronously played waveform sound, call PlaySound with pszSound set to NULL.
SND_FILENAME
The pszSound parameter is a filename.
SND_LOOP
The sound plays repeatedly until PlaySound is called again with the pszSound parameter set to NULL. You must also specify the SND_ASYNC flag to indicate an asynchronous sound event.
SND_MEMORY
A sound eventâ€™s file is loaded in RAM. The parameter specified by pszSound must point to an image of a sound in memory.
SND_NODEFAULT
No default sound event is used. If the sound cannot be found, PlaySound returns silently without playing the default sound.
SND_NOSTOP
The specified sound event will yield to another sound event that is already playing. If a sound cannot be played because the resource needed to generate that sound is busy playing another sound, the function immediately returns FALSE without playing the requested sound.
If this flag is not specified, PlaySound attempts to stop the currently playing sound so that the device can be used to play the new sound.
SND_NOWAIT
If the driver is busy, return immediately without playing the sound.
SND_PURGE
Sounds are to be stopped for the calling task. If pszSound is not NULL, all instances of the specified sound are stopped. If pszSound is NULL, all sounds that are playing on behalf of the calling task are stopped.
You must also specify the instance handle to stop SND_RESOURCE events.
SND_RESOURCE
The pszSound parameter is a resource identifier; hmod must identify the instance that contains the resource.
SND_SYNC
Synchronous playback of a sound event. PlaySound returns after the sound event completes.

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Private Const SND_APPLICATION = &H80 ' look for application specific association
Private Const SND_ALIAS = &H10000 ' name is a WIN.INI [sounds] entry
Private Const SND_ALIAS_ID = &H110000 ' name is a WIN.INI [sounds] entry identifier
Private Const SND_ASYNC = &H1 ' play asynchronously
Private Const SND_FILENAME = &H20000 ' name is a file name
Private Const SND_LOOP = &H8 ' loop the sound until next sndPlaySound
Private Const SND_MEMORY = &H4 ' lpszSoundName points to a memory file
Private Const SND_NODEFAULT = &H2 ' silence not default, if sound not found
Private Const SND_NOSTOP = &H10 ' don't stop any currently playing sound
Private Const SND_NOWAIT = &H2000 ' don't wait if the driver is busy
Private Const SND_PURGE = &H40 ' purge non-static events for task
Private Const SND_RESOURCE = &H40004 ' name is a resource name or atom
Private Const SND_SYNC = &H0 ' play synchronously (default)
Private Declare Function PlaySound Lib "winmm.dll" Alias "PlaySoundA" (ByVal lpszName As String, ByVal hModule As Long, ByVal dwFlags As Long) As Long
Private Sub Form_Load()
'KPD-Team 2000
'URL: http://www.allapi.net/
'E-Mail: [url]mailto:KPDTeam@Allapi.net">KPDTeam@Allapi.net
PlaySound "C:\WINDOWS\MEDIA\TADA.WAV", ByVal 0&, SND_FILENAME Or SND_ASYNC
End Sub

<a href="http://www.allapi.net/[/url]
http://www.allapi.net/agnet/apiguide.shtml

Also usefull is the MSDN (i have a version of a demo-version from C++)
PlaySound
The PlaySound function plays a sound specified by the given filename, resource, or system event. (A system event may be associated with a sound in the registry or in the WIN.INI file.)

BOOL PlaySound(
LPCSTR pszSound,
HMODULE hmod,
DWORD fdwSound
);

Parameters
pszSound
A string that specifies the sound to play. If this parameter is NULL, any currently playing waveform sound is stopped. To stop a non-waveform sound, specify SND_PURGE in the fdwSound parameter.
Three flags in fdwSound (SND_ALIAS, SND_FILENAME, and SND_RESOURCE) determine whether the name is interpreted as an alias for a system event, a filename, or a resource identifier. If none of these flags are specified, PlaySound searches the registry or the WIN.INI file for an association with the specified sound name. If an association is found, the sound event is played. If no association is found in the registry, the name is interpreted as a filename.

hmod
Handle of the executable file that contains the resource to be loaded. This parameter must be NULL unless SND_RESOURCE is specified in fdwSound.
fdwSound
Flags for playing the sound. The following values are defined:
SND_APPLICATION
The sound is played using an application-specific association.
SND_ALIAS
The pszSound parameter is a system-event alias in the registry or the WIN.INI file. Do not use with either SND_FILENAME or SND_RESOURCE.
SND_ALIAS_ID
The pszSound parameter is a predefined sound identifier.
SND_ASYNC
The sound is played asynchronously and PlaySound returns immediately after beginning the sound. To terminate an asynchronously played waveform sound, call PlaySound with pszSound set to NULL.
SND_FILENAME
The pszSound parameter is a filename.
SND_LOOP
The sound plays repeatedly until PlaySound is called again with the pszSound parameter set to NULL. You must also specify the SND_ASYNC flag to indicate an asynchronous sound event.
SND_MEMORY
A sound event's file is loaded in RAM. The parameter specified by pszSound must point to an image of a sound in memory.
SND_NODEFAULT
No default sound event is used. If the sound cannot be found, PlaySound returns silently without playing the default sound.
SND_NOSTOP
The specified sound event will yield to another sound event that is already playing. If a sound cannot be played because the resource needed to generate that sound is busy playing another sound, the function immediately returns FALSE without playing the requested sound.
If this flag is not specified, PlaySound attempts to stop the currently playing sound so that the device can be used to play the new sound.

SND_NOWAIT
If the driver is busy, return immediately without playing the sound.
SND_PURGE
Sounds are to be stopped for the calling task. If pszSound is not NULL, all instances of the specified sound are stopped. If pszSound is NULL, all sounds that are playing on behalf of the calling task are stopped.
You must also specify the instance handle to stop SND_RESOURCE events.

SND_RESOURCE
The pszSound parameter is a resource identifier; hmod must identify the instance that contains the resource.
SND_SYNC
Synchronous playback of a sound event. PlaySound returns after the sound event completes.
Return Values
Returns TRUE if successful or FALSE otherwise.

Remarks
The sound specified by pszSound must fit into available physical memory and be playable by an installed waveform-audio device driver. PlaySound searches the following directories for sound files: the current directory; the Windows directory; the Windows system directory; directories listed in the PATH environment variable; and the list of directories mapped in a network. For more information about the directory search order, see the documentation for the OpenFile function.

If it cannot find the specified sound, PlaySound uses the default system event sound entry instead. If the function can find neither the system default entry nor the default sound, it makes no sound and returns FALSE.

Is the posting too long?

PII 333, 256MB, Asus TNT2Ultra 32MB, AWE Gold 64 4MB

BackupUser · Post by **BackupUser** » Thu Feb 13, 2003 2:38 pm

Restored from previous forum. Originally posted by TerryHough.

Thanks GDI, that will help.

I will still need to determine somehow if a sound system exists before issuing the Playsound_ command to be safe, won't I?

Terry

BackupUser · Post by **BackupUser** » Thu Feb 13, 2003 4:32 pm

Restored from previous forum. Originally posted by GPI.

AAAARRRRRRRRRGGGGGGGGGGGHHHHHHHHHHHH!

PII 333, 256MB, Asus TNT2Ultra 32MB, AWE Gold 64 4MB

BackupUser · Post by **BackupUser** » Fri Feb 14, 2003 12:35 pm

Restored from previous forum. Originally posted by freak.

> Thanks GDI, that will help.
> AAAARRRRRRRRRGGGGGGGGGGGHHHHHHHHHHHH!

Why don't you just change you name to fit? ROFL

Timo