Error running SFBAudioEngine on iPhone

[Monika-Tapadiya]

Hello ,
I have issue in running this application on iphone device . It is working fine for iphone simulator but crashing on iphone 4.3 os .
I added flac file in application's resources and it is crashing at below code in AudioPlayer.cpp

/ Store the decoded audio
if(0 != framesDecoded) {

LOGGER_INFO("com.widevision.Test", "Frames->>>>" <<mFramesDecoded);
CARingBufferError result = mRingBuffer->Store(bufferList, framesDecoded, startingFrameNumber + startTime);
if(kCARingBufferError_OK != result)
LOGGER_ERR("com.wv.Test", "CARingBuffer::Store failed: " << result);

                        LOGGER_INFO("", "Frames--------" <<mFramesDecoded);
                        OSAtomicAdd64Barrier(framesDecoded, &mFramesDecoded);
                   }

And Here is the crash log

Feb 6 14:54:39 iPhone SimplePlayer-iOS[1852] : OpenOutput
Feb 6 14:54:40 iPhone SimplePlayer-iOS[1852] : Resetting output
Feb 6 14:54:40 iPhone SimplePlayer-iOS[1852] : Enqueuing "file://localhost/var/mobile/Applications/DC638145-12AC-47CD-8727-BCDA8AA91086/SimplePlayer-iOS.app/Track.flac"
Feb 6 14:54:40 iPhone SimplePlayer-iOS[1852] : AudioUnitSetProperty (19, kAudioUnitScope_Input) failed: -10851
Feb 6 14:54:42 iPhone SimplePlayer-iOS[1852] : Decoding starting for "file://localhost/var/mobile/Applications/DC638145-12AC-47CD-8727-BCDA8AA91086/SimplePlayer-iOS.app/Track.flac"
Feb 6 14:54:42 iPhone SimplePlayer-iOS[1852] : Decoder format: 2 ch, 44100 Hz, 'lpcm' (0x0000002c) 16-bit little-endian signed integer, deinterleaved
Feb 6 14:54:42 iPhone SimplePlayer-iOS[1852] : Decoder channel layout: kAudioChannelLayoutTag_Stereo (0x00650002)
Feb 6 14:54:42 iPhone SimplePlayer-iOS[1852] : StartOutput
Feb 6 14:54:42 iPhone SimplePlayer-iOS[1852] : Frames->>>>0
Feb 6 14:54:42 iPhone SimplePlayer-iOS[1852] : Frames--------0

Printing Frames -- >> 0

Help Please !!!

[0x8badf00d]

When I ran the app on my device in debug mode it crashed with EXC_BAD_ACCESS. Looking at the crash log on my device: EXC_ARM_DA_ALIGN got me thinking its memory alignment issue and it was at this line -> OSAtomicAdd64Barrier(framesDecoded, &mFramesDecoded); // mFramesDecoded is misaligned.

I had declared the alignment explicitly. In AudioPlayer.h:

int64_t mFramesDecoded __attribute__ ((aligned (8)));; int64_t mFramesRendered __attribute__((aligned (8))); int64_t mFramesRenderedLastPass __attribute__((aligned (8)));

And in DecoderStateData.h:

SInt64 mTimeStamp __attribute__((aligned (8))); SInt64 mTotalFrames __attribute__((aligned (8))); volatile SInt64 mFramesRendered __attribute__((aligned (8))); SInt64 mFrameToSeek __attribute__((aligned (8)));

This only prevented app from crashing. Although audio wouldn't play. Need to further debug the problem.

[sbooth]

The last time I tried this on my iPhone was before iOS 5 came out, so I will investigate a bit when I have some free time.

[Monika-Tapadiya]

Ok Fine !!

I will wait for your reply