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Added some 'mutex love'. #127

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Added some 'mutex love'. #127

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21 changes: 16 additions & 5 deletions EZAudio/EZRecorder.m
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,9 @@

#import "EZAudio.h"

#include <pthread.h>
static pthread_mutex_t outputAudioFileLock;

@interface EZRecorder (){
ExtAudioFileRef _destinationFile;
AudioFileTypeID _destinationFileTypeID;
Expand All @@ -47,6 +50,8 @@ -(EZRecorder*)initWithDestinationURL:(NSURL*)url
self = [super init];
if( self )
{
pthread_mutex_init(&outputAudioFileLock,NULL);

// Set defaults
_destinationFile = NULL;
_destinationFileURL = (__bridge CFURLRef)url;
Expand Down Expand Up @@ -159,10 +164,13 @@ -(void)appendDataFromBufferList:(AudioBufferList *)bufferList
{
if( _destinationFile )
{
[EZAudio checkResult:ExtAudioFileWriteAsync(_destinationFile,
bufferSize,
bufferList)
operation:"Failed to write audio data to recorded audio file"];
if (0 == pthread_mutex_trylock(&outputAudioFileLock)) {
OSStatus err = ExtAudioFileWriteAsync(_destinationFile, bufferSize, bufferList);
[EZAudio checkResult:err
operation:"Failed to write audio data to recorded audio file"];
pthread_mutex_unlock(&outputAudioFileLock);
}

}
}

Expand All @@ -171,7 +179,10 @@ -(void)closeAudioFile
if( _destinationFile )
{
// Dispose of the audio file reference
[EZAudio checkResult:ExtAudioFileDispose(_destinationFile)
pthread_mutex_lock(&outputAudioFileLock);
OSStatus setupErr;
setupErr = ExtAudioFileDispose(_destinationFile);
[EZAudio checkResult:setupErr
operation:"Failed to close audio file"];

// Null out the file reference
Expand Down