ios - SIGSEGV/SEGV_ACCERR 导致 GPUImage 框架 iOS 崩溃

Question

我从我的应用程序中集成的 crittercism 工具获得了 SIGSEGV/SEGV_ACCERR 崩溃报告，这是因为拍摄视频并在从 sleep 模式恢复后将应用程序置于 sleep 模式 15-20 分钟，应用程序崩溃了，就我而言，这是阻塞问题。请提出解决方案，提前致谢下面显示了使用的示例代码:

GPUImageiOSBlurFilter   * blurFilterObj = [[GPUImageiOSBlurFilter alloc] init];
    blurFilterObj.blurRadiusInPixels = 4.5f ;
    blurFilterObj.downsampling = 2.5f ;
    blurFilterObj.saturation = 1.0f;



GPUImageVideoCamera  *liveVideo = [[GPUImageVideoCamera alloc] initWithSessionPreset:AVCaptureSessionPresetMedium cameraPosition:AVCaptureDevicePositionFront];
    liveVideo.outputImageOrientation = UIInterfaceOrientationPortrait;
    liveVideo.horizontallyMirrorFrontFacingCamera = YES ;

    //Add Targets to live video
    [liveVideo addTarget:blurView];
   [liveVideo addTarget:blurFilterObj];
 [blurFilterObj addTarget:blurView];

   CSBlurView  *blurView = [[CSBlurView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height)];
    [self.view addSubview:blurView];

GPUImageVideoCamera  *liveVideo = [[GPUImageVideoCamera alloc] initWithSessionPreset:AVCaptureSessionPresetMedium cameraPosition:AVCaptureDevicePositionFront];
    liveVideo.outputImageOrientation = UIInterfaceOrientationPortrait;
    liveVideo.horizontallyMirrorFrontFacingCamera = YES ;

    //Add Targets to live video
    [liveVideo addTarget:blurView];
   [liveVideo addTarget:blurFilterObj];
 [blurFilterObj addTarget:blurView];

以下代表崩溃报告

libGPUSupportMercury.dylib 0x322d48f6 gpus_ReturnNotPermittedKillClient + 1 
IMGSGX543GLDriver 0x2c7e282d SubmitPackets + 125
GLEngine 0x2fc44c3d gliPresentViewES + 17   
OpenGLES 0x2fc4f139 -[EAGLContext presentRenderbuffer:] + 65    
0x0006f2a3 -[GPUImageContext presentBufferForDisplay] (GPUImageContext.m:196)
0x00074a75 -[GPUImageView presentFramebuffer] (GPUImageView.m:220)
0x0004e23d runSynchronouslyOnVideoProcessingQueue (GPUImageOutput.m:27
0x00074cdd -[GPUImageView newFrameReadyAtTime:atIndex:] (GPUImageView.m:385)    
0x0002096f -[GPUImageVideoCamera      updateTargetsForVideoCameraUsingCacheTextureAtWidth:height:time:] (GPUImageVideoCamera.m:640) 
0x00020ceb -[GPUImageVideoCamera processVideoSampleBuffer:] (GPUImageVideoCamera.m:738) 
0x000216bf __74-[GPUImageVideoCamera  captureOutput:didOutputSampleBuffer:fromConnection:]_block_invoke  (GPUImageVideoCamera.m:966)    
libdispatch.dylib 0x38246d1b _dispatch_call_block_and_release + 11  
libdispatch.dylib 0x3824d273 _dispatch_queue_drain$VARIANT$mp + 375 
libdispatch.dylib 0x3824d06b _dispatch_queue_invoke$VARIANT$mp + 43
libdispatch.dylib 0x3824dce1 _dispatch_root_queue_drain + 77
libdispatch.dylib 0x3824df59 _dispatch_worker_thread2 + 57  
libsystem_pthread.dylib 0x38388dbf _pthread_wqthread + 299  
libsystem_pthread.dylib 0x38388c84 start_wqthread + 8

Answer 1

我从开发 GPUImage 过滤器 api 的 BradLarson 那里得到了解决方案，他从 github 资源中回复。当我们使用 gpuimagevideocamera 时，它总是渲染 opengl，所以当它进入后台模式或 sleep 模式时也会渲染 opengl，然后会发生崩溃，因此，在应用程序移动到后台之前停止相机捕获并删除添加到相机和 picturewriter 的过滤器它解决了问题。谢谢