CMSampleBufferRef内存泄漏
CMSampleBufferRef内存泄漏
提问于 2012-02-20 09:37:51
所以我在转换一些音频时遇到了问题。在转换时，我得到了一个巨大的内存泄漏，它来自这些代码行。
dispatch_queue_t mediaInputQueue = dispatch_queue_create("mediaInputQueue", NULL);
[assetWriterInput requestMediaDataWhenReadyOnQueue:mediaInputQueue
usingBlock: ^
{
while (assetWriterInput.readyForMoreMediaData)
{
CMSampleBufferRef nextBuffer = [assetReaderOutput copyNextSampleBuffer];
if (nextBuffer)
{
[assetWriterInput appendSampleBuffer: nextBuffer];
nextBuffer = NULL;
}
else
{
// done!
[assetWriterInput markAsFinished];
[assetWriter finishWriting];
[assetReader cancelReading];
NSDictionary *outputFileAttributes = [[NSFileManager defaultManager]
attributesOfItemAtPath:exportPath
error:nil];
NSNumber *doneFileSize = [NSNumber numberWithLong:[outputFileAttributes fileSize]];
[self performSelectorOnMainThread:@selector(updateCompletedSizeLabel:)
withObject:doneFileSize
waitUntilDone:NO];
// release a lot of stuff
[assetReader release];
[assetReaderOutput release];
[assetWriter release];
[assetWriterInput release];
[exportPath release];
break;
}
}
}];似乎导致泄漏的行是: CMSampleBufferRef nextBuffer = assetReaderOutput copyNextSampleBuffer；
我对此一无所知，任何帮助都将不胜感激。
答:修复-只需在if/else语句的末尾添加以下行即可。
CMSampleBufferInvalidate(nextBuffer);
CFRelease(nextBuffer);
nextBuffer = nil; // NULL?回答 1
Stack Overflow用户
回答已采纳
发布于 2012-02-22 10:30:39
答:修复-只需在if/else语句的末尾添加以下行即可。
CMSampleBufferInvalidate(nextBuffer);
CFRelease(nextBuffer);
nextBuffer = NULL;页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/9355175
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