我的应用程序遭受OutOfBuffers作为帧丢弃原因

Question

大量使用我的应用程序运行AVCaptureSession实例它是痛苦的

DroppedFrameReason（P）= OutOfBuffers

这是- (void)captureOutput:(AVCaptureOutput *)captureOutput didDropSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection中SampleBuffer对象的详细信息

CMSampleBuffer 0x10de70770 retainCount: 1 allocator: 0x1b45e2bb8
    invalid = NO
    dataReady = YES
    makeDataReadyCallback = 0x0
    makeDataReadyRefcon = 0x0
    buffer-level attachments:
        DroppedFrameReason(P) = OutOfBuffers
    formatDescription = <CMVideoFormatDescription 0x174441e90 [0x1b45e2bb8]> {
    mediaType:'vide' 
    mediaSubType:'BGRA' 
    mediaSpecific: {
        codecType: 'BGRA'       dimensions: 480 x 360 
    } 
    extensions: {<CFBasicHash 0x174a61100 [0x1b45e2bb8]>{type = immutable dict, count = 5,
entries =>
    0 : <CFString 0x1ae9fa7c8 [0x1b45e2bb8]>{contents = "CVImageBufferYCbCrMatrix"} = <CFString 0x1ae9fa808 [0x1b45e2bb8]>{contents = "ITU_R_601_4"}
    1 : <CFString 0x1ae9fa928 [0x1b45e2bb8]>{contents = "CVImageBufferTransferFunction"} = <CFString 0x1ae9fa7e8 [0x1b45e2bb8]>{contents = "ITU_R_709_2"}
    2 : <CFString 0x1aea2c3e0 [0x1b45e2bb8]>{contents = "CVBytesPerRow"} = <CFNumber 0xb000000000007802 [0x1b45e2bb8]>{value = +1920, type = kCFNumberSInt32Type}
    3 : <CFString 0x1aea2c460 [0x1b45e2bb8]>{contents = "Version"} = <CFNumber 0xb000000000000022 [0x1b45e2bb8]>{value = +2, type = kCFNumberSInt32Type}
    5 : <CFString 0x1ae9fa8a8 [0x1b45e2bb8]>{contents = "CVImageBufferColorPrimaries"} = <CFString 0x1ae9fa7e8 [0x1b45e2bb8]>{contents = "ITU_R_709_2"}
}
}
}
    sbufToTrackReadiness = 0x0
    numSamples = 0
    sampleTimingArray[1] = {
        {PTS = {3825121221333/1000000000 = 3825.121}, DTS = {INVALID}, duration = {INVALID}},
    }
    dataBuffer = 0x0

我做了一些挖掘，发现了This

提供样本缓冲区的模块已耗尽源缓冲区。这种情况通常是由客户端持有缓冲区太长时间引起的，并且可以通过将缓冲区返回给提供程序来缓解。

它们是什么意思：将缓冲区返回给提供者？我有什么办法吗？

Answer 1

在here你实际上提到了问题和答案

“这种情况通常是由客户端持有缓冲区太长时间引起的，并且可以通过将缓冲区返回给提供者来缓解。”