Re: still no sound output -- bad API update install?
Re: still no sound output -- bad API update install?
- Subject: Re: still no sound output -- bad API update install?
- From: Chris Rogers <email@hidden>
- Date: Thu, 8 May 2003 23:39:47 -0700
Try putting #if 0 around this code. This solved the problem for me.
The check here
is not necessary, or correct.
#if 0
if (expNumFrames != inNumberFrames)
{
// Here we allow for some slop +/- 2 frames
bool shouldExit = false;
if (inNumberFrames > (expNumFrames + 2))
shouldExit = true;
else if ((expNumFrames - 2) > inNumberFrames)
shouldExit = true;
if (shouldExit) {
printf ("Expected %ld frames, was asked for
%ld\n", expNumFrames, inNumberFrames);
exit(-1);
}
}
#endif
Chris Rogers
Apple Computer
>
I'm trying to determine why I don't get any sound output after
>
compiling and running the example app, DefaultOutputUnit.
>
>
Prior to installing the update to the CoreAudio API, the previous
>
version of that app produced a 440 tone. The current version
>
does not. Furthermore, if I recompile and run the previous
>
version, it STILL produces the tone.
>
>
This leads me to wonder if the update installation was completely
>
successful. i.e.: the example code has a modification date of
>
May 1, 2003. But the AudioToolbox and AudioUnit frameworks
>
both have mod dates from December 2002. Am I missing updated
>
pieces? I haven't been able to find a manifest on the Apple site,
>
so I don't know what the package was intended to contain.
>
>
Any suggestions? I'd like to get back to having fun!
>
>
The diagnostic output from the May 2003 example app follows.
>
>
Thanks in advance!
>
Scott
>
>
>
>
## Component Manager: attempting to find symbols in a component
>
alias of type (regR/carP/x!bt)
>
testing at 16 bits, with 2 channels, at 8000.000000Hz.
>
generating sin wave at 440.000000 Hz, 0.250000 amplitude
>
Rendering source:
>
>
SampleRate=8000.000000,BytesPerPacket=2,FramesPerPacket=1,BytesPerFrame=2,BitsPerChannel=16,ChannelsPerFrame=2
>
Current Slice: inFrames=96, startingFrameCount=0
>
Expected 92 frames, was asked for 96
>
>
test has exited with status 255.
>
_______________________________________________
>
coreaudio-api mailing list | email@hidden
>
Help/Unsubscribe/Archives:
>
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
>
Do not post admin requests to the list. They will be ignored.
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.