VideoToolBox解码图像显示在约塞米蒂flickring OSX

我已经使用videoToolBox用于编码和解码数据，所以一旦我们得到了解码数据直接我们传递到AVSampleBufferDisplayLayerVideoToolBox解码图像显示在约塞米蒂flickring OSX

这里是代码片段

-(CVPixelBufferRef)decode:(AVPacket*)vp { 

    CVPixelBufferRef outputPixelBuffer = NULL; 

    CMBlockBufferRef blockBuffer = NULL; 
    OSStatus status = CMBlockBufferCreateWithMemoryBlock(kCFAllocatorDefault, 
                  (void*)vp->data, vp->size, 
                  kCFAllocatorNull, 
                  NULL, 0, vp->size, 
                  0, &blockBuffer); 


    //NSLog(@"status is for CMBlockBufferCreateWithMemoryBlock is %d",(int)status); 
    if(status == kCMBlockBufferNoErr) { 
     CMSampleBufferRef sampleBuffer = NULL; 
     const size_t sampleSizeArray[] = {vp->size}; 
     status = CMSampleBufferCreateReady(kCFAllocatorDefault, 
              blockBuffer, 
              formatDesc , 
              1, 0, NULL, 1, sampleSizeArray, 
              &sampleBuffer); 
     // NSLog(@"status is for formatdesc is %d",(int)status); 
     if (status == kCMBlockBufferNoErr && sampleBuffer) { 
      CFArrayRef attachments = CMSampleBufferGetSampleAttachmentsArray(sampleBuffer, YES); 
      CFMutableDictionaryRef dict = (CFMutableDictionaryRef)CFArrayGetValueAtIndex(attachments, 0); 
      CFDictionarySetValue(dict, kCMSampleAttachmentKey_DisplayImmediately, kCFBooleanTrue); 
      [displayLayer flush]; 
      if([displayLayer isReadyForMoreMediaData]) 
      { 
       [displayLayer enqueueSampleBuffer:sampleBuffer]; 
      } 

      [displayLayer setNeedsDisplay]; 

      [self performSelectorOnMainThread:@selector(setView:) withObject:[[RPCViewerAppInitializer sharedRPCViewerAppInitializer] rpcView] waitUntilDone:NO]; 
      CFRelease(blockBuffer); 
      CFRelease(sampleBuffer); 

     } 
    } 
    return outputPixelBuffer; 
}

上面的代码在10.10 osx中工作正常，但在10.10我在屏幕上闪烁。

任何帮助将是可观的。

来源

2017-10-13 PR Singh

能够将此属性设置为得到回答自己:) –

谜底到底是什么？！将它添加到此处并将其标记为已回答！ –

我将AVSampleBufferDisplayLayer的controlTimebase属性设置为零，这是原因，现在我根本没有设置此属性 –

这个问题已经解决了：

我设置AVSampleBufferDisplayLayer的controlTimebase财产为零，这是原因，现在一点都不

来源

2017-10-16 09:49:17

VideoToolBox解码图像显示在约塞米蒂flickring OSX

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