[directmusic] Re: DirectMusic and multiple threads
- From: "Vytautas Leonavicius" <vytas@xxxxxxxxxxxxx>
- To: <directmusic@xxxxxxxxxxxxx>
- Date: Thu, 10 Jun 2004 17:18:19 +0200
Todor,
Thanks for your reply. But in my application CoInitializeEx is called
exactly the way you suggested. If not, I get an error.
But I was wrong about that segments caused problems. I found out recently,
that the problem is with performance object. If I create performance object
in loader thread, sound is not played, however, if performance object is
created in main thread, everything goes well. Here is the code of
Performance object creation:
CPerformance::CPerformance( HWND owner ) : mPerformance( 0 ), mVolume(
1.0f )
{
// Create performance object
HRESULT hr = CoCreateInstance
( CLSID_DirectMusicPerformance, 0,
CLSCTX_INPROC,
IID_IDirectMusicPerformance8,
reinterpret_cast< void** >(
&mPerformance ) );
if( FAILED( hr ) ) {
THROW_DXERROR( hr, "Failed to intialize IDirectMusicPerformance8" );
}
ffects.
hr = mPerformance->InitAudio( 0, 0, owner, DMUS_APATH_DYNAMIC_STEREO, 128,
DMUS_AUDIOF_ALL, 0 );
if ( FAILED( hr ) ) {
if( hr == DSERR_NODRIVER ) {
THROW_DXERROR( hr, "No sound card found." );
}
THROW_DXERROR( hr, "Failed to intialize IDirectMusicPerformance8" );
}
// Set maximum volume.
setVolume( mVolume );
}
----- Original Message -----
From: "Todor Fay" <todor@xxxxxxxxxxxxx>
To: <directmusic@xxxxxxxxxxxxx>
Sent: Wednesday, June 09, 2004 3:22 PM
Subject: [directmusic] Re: DirectMusic and multiple threads
> This almost sounds like a COM initialization issue. Are you calling
> CoInitializeEx(NULL,COINIT_MULTITHREADED) at the start of your program?
>
> Todor
>
> -----Original Message-----
> From: directmusic-bounce@xxxxxxxxxxxxx
> [mailto:directmusic-bounce@xxxxxxxxxxxxx] On Behalf Of Vytautas
> Leonavicius
> Sent: Thursday, June 10, 2004 5:50 AM
> To: directmusic@xxxxxxxxxxxxx
> Subject: [directmusic] DirectMusic and multiple threads
>
> Hello Group,
> I am having trouble with DirectMusic. Our app. uses 2 separate threads,
> one for resource loading another for main flow. IDirectMusicSegment
> objects, loaded on loader thread are not playing in main thread. No
> errors are returned, just silence.
>
> If I try to play sound in loader thread (immidiately after load) sound's
> playing well. Please help!
>
> Vytautas
>
>
>
>
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