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Timestamp:
01/23/15 18:15:20 (3 days ago)
Author:
robert
Message:

From Javier Taibo,
"I have found a "bug" in the new audio decoding code (actually I think the bug is in ffmpeg, but anyway it should be wise to protect the OSG plug-in about it). I am attaching a security check in FFmpegDecoderAudio.cpp.

If anybody is curious about the problem, it happens sometimes when decoding an AAC audio stream. It eventually includes a PCE block inside the AAC audio frame and then ffmpeg audio decoding function signals a "new_frame" with 1024 samples, but a null pointer instead of the audio data. It can be easily detected because in these cases number of channels is 0. Maybe this is the intended behaviour for ffmpeg, but I find it quite weird.
"

" It seems that libav does not have a channels attribute in AVFrame structure. This new version should do."

Files:
1 modified

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  • OpenSceneGraph/trunk/include/osgViewer/api/Carbon/PixelBufferCarbon

    r12292 r13130  
    4646                getState()->setGraphicsContext(this); 
    4747 
    48                 if (_traits.valid() && _traits->sharedContext) 
     48                if (_traits.valid() && _traits->sharedContext.valid()) 
    4949                { 
    5050                    getState()->setContextID( _traits->sharedContext->getState()->getContextID() );