[ecasound] ECI Output of Audio Clips

Hello everyone.

I'm still working with this and have had some success but now I'm having problems.

I am trying to take short clips from a wav file using ECI in C++ and send them to an output wav file. Here's a sample of my code. I get the first 15-second clip but the output file ends there and I get no other clips. I am using a SMIL file as the input control.

case SE_AUDIO:
{
if(! strTargetFile.length())
{
cout << "ERROR: No target file specified.\n";
break;
}

sprintf( strCmd, "ai-add %s", c->GetAudioSrc());
cout << strCmd << ".\n";
e.command(strCmd);

sprintf( strCmd, "ai-select %s", c->GetAudioSrc());
cout << strCmd << ".\n";
e.command(strCmd);

e.command( "cs-set-length -1");

double p1 = (double)(c->GetAudioClipBegin()/1000.0);
if( p1 > 0.0)
{
sprintf( strCmd, "ai-setpos %f", p1);
cout << strCmd << ".\n";
e.command( strCmd);

double p2 = (double)(c->GetAudioClipEnd()/1000.0);
if( p2 > p1)
{
double dur = p2-p1;
sprintf( strCmd, "cs-set-length %f", dur);
cout << strCmd << ".\n";
e.command( strCmd);
}
}

e.command("cs-connect");
e.command( "run");
 
e.command( "stop");

e.command("cs-disconnect");

sprintf( strCmd, "ai-remove %s", c->GetAudioSrc());
cout << strCmd << ".\n";
e.command( strCmd);

}
break;

The SMIL looks like...
                <seq class="background">
                <pause dur="1:40.167"/>
                    <audio src="WhipIt.wav" clipBegin="30.000" clipEnd="45.000"/>
                    <audio src="WhipIt.wav" clipBegin="1:00.000" clipEnd="1:15.000"/>
                </seq>

Does anyone know how I can get this to work?

Thanks.

Keith

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Received on Wed Jul 25 20:15:03 2007