Comments (4)
Pull request, if you please!
On Friday, September 7, 2012 at 7:10 PM, Corey wrote:
If I rapidly start and stop recording, I will very quickly get a memory exception caused by ExtAudioFileWriteAsync().
The error is shown to occur in the assembler for: AudioRingBuffer::GetTimeBounds()
I applied the instructions found here:
http://stackoverflow.com/questions/7961087/exc-bad-access-in-audioringbuffergettimebounds
(wrapping a mutex around each call to ExtAudioFileWriteAsync and ExtAudioFileDispose)
Now I can spam away without it crashing.—
Reply to this email directly or view it on GitHub (#35).
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Just committed the change to my existing fork, which is already in a pull request.
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Okay, discovered today that while this works for the simulator, it fails on device.
I'm testing some different approaches right now...
Alright, got this going. It was actually quite simple. Just had to move the pthread_mutex_unlock into the if( pthread_mutex_trylock() ) scope.
- (void)writeNewAudio:(float *)newData numFrames:(UInt32)thisNumFrames numChannels:(UInt32)thisNumChannels
{
UInt32 numIncomingBytes = thisNumFrames*thisNumChannels*sizeof(float);
memcpy(self.outputBuffer, newData, numIncomingBytes);
AudioBufferList outgoingAudio;
outgoingAudio.mNumberBuffers = 1;
outgoingAudio.mBuffers[0].mNumberChannels = thisNumChannels;
outgoingAudio.mBuffers[0].mDataByteSize = numIncomingBytes;
outgoingAudio.mBuffers[0].mData = self.outputBuffer;
if( 0 == pthread_mutex_trylock( &outputAudioFileLock ) )
{
ExtAudioFileWriteAsync(self.outputFile, thisNumFrames, &outgoingAudio);
pthread_mutex_unlock( &outputAudioFileLock ); // only unlock if it was successfully locked to begin with //
}
// Figure out where we are in the file
SInt64 frameOffset = 0;
ExtAudioFileTell(self.outputFile, &frameOffset);
self.currentTime = (float)frameOffset / self.samplingRate;
}
from novocaine.
I believe I've merged this in...
from novocaine.
Related Issues (20)
- Audio distortion isuue while playing on iphone speaker HOT 1
- 1
- use of @autoreleasepool in renderCallback and inputCallback HOT 1
- inputblock + outputblock + forceOutputToSpeaker = Error: Couldn't render the output unit (-50) HOT 1
- Can't play an audio file that was downloaded from server but the data is the same HOT 1
- Music from the Internet HOT 1
- What exactly comes from the newAudio variable?
- Bluetooth Audio? HOT 3
- updateMeters and averagePowerForChannel equivalents for Novocaine? HOT 2
- Setting deployment target to 8.0 causes demo app to crash HOT 2
- Is there anyway to properly convert the audio array (float*) into UTF 8? HOT 7
- m4a files
- Gapless
- RingBuffer.h - class RingBuffer syntax error HOT 3
- Use of deprecated AudioSession APIs on Novocaine.m HOT 2
- How to 8000hz/16000hz get or put as short* array for audio ?
- Is this library suitable to make a lack-in amplifier from microphone input?
- Couldn't initialize the output unit ('!cat') on Device only HOT 1
- Mac Catalyst (UIKit for Mac) support
- Does default sample rate cause resampling and setting buffer size for minimum latency? HOT 1
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