Multiple runs of file write example gives error -48 duplicate filename on second execution and all following

[ghost]

Hi

When I uncomment the filewrite example code in the demo view controller, on the first run everything is fine, but on the second run,

CheckError(ExtAudioFileCreateWithURL(audioFileRef, kAudioFileM4AType, &outputFileDesc, NULL, 0, &_outputFile), "Creating file");

exits the app with error code -48, which is declared in MacErrors.h as duplicate filename.

I will try to find a work around this and post it here.

best

[ghost]

My quick workaround for this is:

in AudioFileWriter.m

• (id)initWithAudioFileURL:(NSURL *)urlToAudioFile samplingRate:(float)thisSamplingRate numChannels:(UInt32)thisNumChannels

just above the line with CheckEroor(ExtAudioFileCreateWithURL... i added the following code which removes the file if it already exists:

if ([[NSFileManager defaultManager] fileExistsAtPath:[urlToAudioFile path]]) {
[[NSFileManager defaultManager] removeItemAtURL:urlToAudioFile error:nil] ;
}

[ghost]

but here is a much better solution, this should go into the rep

CheckError(ExtAudioFileCreateWithURL(audioFileRef, kAudioFileM4AType, &outputFileDesc, NULL, kAudioFileFlags_EraseFile, &_outputFile), "Creating file");

kAudioFileFlags_EraseFile does the trick, currently 0 is passed for flags.

[alexbw]

This is a great addition. Make a pull request, I'll roll it in.

On Tuesday, August 21, 2012 at 7:23 AM, sn-e5 wrote:

My quick workaround for this is:
in
(id)initWithAudioFileURL:(NSURL *)urlToAudioFile samplingRate:(float)thisSamplingRate numChannels:(UInt32)thisNumChannels

just above the line with CheckEroor(ExtAudioFileCreateWithURL... i added the following code which removes the file if it already exists:
if ([[NSFileManager defaultManager] fileExistsAtPath:[urlToAudioFile path]]) {
[[NSFileManager defaultManager] removeItemAtURL:urlToAudioFile error:nil] ;
}

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[ghost]

hi alex, did the pull request, my first ever ;). btw, thank you for your awesome work, it is extremely useful to me.

[alexbw]

Roger that, I'll test the commit and merge it in. Glad you dig the project!

On Tuesday, August 21, 2012 at 7:57 AM, sn-e5 wrote:

hi alex, did the pull request, my first ever ;). btw, thank you for your awesome work, it is extremely useful to me.

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[alexissmirnov]

Sent from a phone.

On 2012-08-21, at 7:12 AM, sn-e5 notifications@github.com wrote:

Hi

When I uncomment the filewrite example code in the demo view controller, on the first run everything is fine, but on the second run,

CheckError(ExtAudioFileCreateWithURL(audioFileRef, kAudioFileM4AType, &outputFileDesc, NULL, 0, &_outputFile), "Creating file");

exits the app with error code -48, which is declared in MacErrors.h as duplicate filename.

I will try to find a work around this and post it here.

best

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