Re: afinfo
Re: afinfo
- Subject: Re: afinfo
- From: Jean-Daniel Dupas <email@hidden>
- Date: Thu, 4 Nov 2010 23:40:25 +0100
Le 4 nov. 2010 à 22:20, email@hidden a écrit :
> Hi,
>
> I have set up a NSTask to log the afinfo output, which works already.
> My question is:
> Is there an argument that gives me back only the duration of the audiofile ?
> In the terminal I can do this with -afinfo filename | grep "estimated duration" ,
> but that does not work with NSTask.
>
What about using CoreAudio API instead ?
ExtAudioFileRef file;
if (noErr == ExtAudioFileOpenURL(myURL, &file)) {
UInt64 frames = 0;
AudioStreamBasicDescription desc;
UInt32 pfSize = sizeof(UInt64), descSize = sizeof(AudioStreamBasicDescription);
if (noErr == ExtAudioFileGetProperty(file, kExtAudioFileProperty_FileDataFormat, &descSize, &desc) &&
noErr == ExtAudioFileGetProperty(file, kExtAudioFileProperty_FileLengthFrames, &pfSize, &frames)) {
double duration = frames / desc.mSampleRate;
}
ExtAudioFileDispose(file);
}
-- Jean-Daniel
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
| References: | |
| | >afinfo (From: email@hidden <email@hidden>) |