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POIntermittent crash in recordingCallback() on app launch
 

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  1. POIntermittent crash in recordingCallback() on app launch
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    <p>My iOS app (using openFrameworks) crashes 30-40% of the time on launch on this line:</p> <pre><code> if(soundInputPtr!=NULL) soundInputPtr-&gt;audioIn(tempBuffer, ioData-&gt;mBuffers[i].mDataByteSize/2, 1); </code></pre> <p>which is inside the larger function in <code>ofxiPhoneSoundStream.m</code></p> <pre><code>static OSStatus recordingCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData) { </code></pre> <p>I am doing audio setup with <code>ofSoundStreamSetup(0, 1, this, 44100, 256, 4);</code> in <code>setup()</code>.</p> <p>In the simulator this crash happens 100% of the time. Any idea (a) what's happening or (b) how to debug it?</p> <p>Update: Stack trace:</p> <pre><code>Thread 11 AURemoteIO::IOThread, Queue : (null) #0 0x00008ff2 in Gameplay::listen() at /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk/usr/include/c++/4.2.1/bits/basic_string.h:238 #1 0x003178bc in recordingCallback(void*, unsigned long*, AudioTimeStamp const*, unsigned long, unsigned long, AudioBufferList*) at /Developer/of_007_iphone/libs/openFrameworks/sound/ofxiPhoneSoundStream.mm:143 #2 0x019447e4 in AUIOHelper::NotifyInputAvailable(AudioTimeStamp const&amp;, unsigned long, AudioBufferList const&amp;) () #3 0x0192baf1 in AURemoteIO::PerformIO(unsigned int, unsigned int, XAudioTimeStamp const&amp;, XAudioTimeStamp const&amp;, int&amp;) () #4 0x0192bbc1 in AURIOCallbackReceiver_PerformIO () #5 0x0191b3bf in _XPerformIO () #6 0x01861c11 in mshMIGPerform () #7 0x018e4180 in MSHMIGDispatchMessage () #8 0x019297ba in AURemoteIO::IOThread::Run() () #9 0x0192e8e1 in AURemoteIO::IOThread::Entry(void*) () #10 0x01836972 in CAPThread::Entry(CAPThread*) () #11 0x97bf7259 in _pthread_start () #12 0x97bf70de in thread_start () </code></pre> <p>And then <code>Thread 11 AURemoteIO::IOThread: Program received signal: "EXC_BAD_ACCESS"</code></p> <p>As requested, <code>recordingCallback()</code>:</p> <pre><code>static OSStatus recordingCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData) { AudioBufferList list; // redundant list.mNumberBuffers = 1; list.mBuffers[0].mData = sampleBuffer; list.mBuffers[0].mDataByteSize = 2 * inNumberFrames; list.mBuffers[0].mNumberChannels = 1; ioData = &amp;list; //printf("No buffers: %d, buffer length: %d bus number: %d\n", ioData-&gt;mNumberBuffers, ioData-&gt;mBuffers[0].mDataByteSize, inBusNumber); // Then: // Obtain recorded samples OSStatus status = AudioUnitRender(audioUnit, ioActionFlags, inTimeStamp, 1, inNumberFrames, ioData); checkStatus(status); if(status!=noErr) return status; if(ioData-&gt;mNumberBuffers&gt;0) { int i = 0; short int *buffer = (short int *) list.mBuffers[i].mData; for(int j = 0; j &lt; ioData-&gt;mBuffers[i].mDataByteSize/2; j++) { // go through each sample and turn it into a float tempBuffer[j] = (float)buffer[j]/32767.f; } done = true; // THIS LINE IS LINE 143 if(soundInputPtr!=NULL) soundInputPtr-&gt;audioIn(tempBuffer, ioData-&gt;mBuffers[i].mDataByteSize/2, 1); } return noErr; } </code></pre> <p>Line 143 marked above, also: <code>if(soundInputPtr!=NULL) soundInputPtr-&gt;audioIn(tempBuffer, ioData-&gt;mBuffers[i].mDataByteSize/2, 1);</code></p> <p><strong>Added:</strong></p> <p><code>Gameplay::listen()</code> is just a max/min tracker-- it used to do more, but I realized those functions were better moved to <code>audioRecieved()</code>. In fact, <em>no</em> other code is calling this function:</p> <pre><code>void Gameplay::listen() { // track extremes for XML purpose if (pitchAvg &gt; move.highestPitch) move.highestPitch = pitchAvg; if ((pitchAvg &lt; move.lowestPitch) &amp;&amp; pitchAvg != 0) move.lowestPitch = pitchAvg; if (ampAvg &gt; move.loudestVol) move.loudestVol = ampAvg; if ((ampAvg &lt; move.softestVol) &amp;&amp; ampAvg &gt; 0.15) move.softestVol = ampAvg; } </code></pre>
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    1. COPost the output of the crashes.
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      1. POIntermittent crash in recordingCallback() on app launch
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    2. COPlease also add the source for `Gameplay::listen` (which I'm assuming is the function pointed to by `soundInputPtr->audioIn`; you may want to verify that with `NSLog`). EDIT: Actually, looking at your other question, I see `audioIn` appears to be a method somewhere else, so the `Gameplay::listen` crash is a different (possibly related, possibly unrelated) crash.
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      1. POIntermittent crash in recordingCallback() on app launch
      1. USPeter Hosey
 

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