我尝试从 didOutputSampleBuffer 中保存 CMSampleBuffer,作为 iOS 开发人员文档,我将其复制到 CFArrayRetainCallBack 中,如下所示:
static const void * ObjectRetainCallBack(CFAllocatorRef allocator, const void *value) {
CMSampleBufferRef buffer = (CMSampleBufferRef)value;
if (buffer) {
CMSampleBufferRef new = NULL;
OSStatus status = CMSampleBufferCreateCopy(kCFAllocatorDefault, buffer, &new);
if (status == noErr) {
return new;
}
return NULL;
}
return NULL;
}
static void ObjectReleaseCallBack(CFAllocatorRef allocator, const void *value) {
if (value) {
CFRelease(value);
}
}
CFMutableArrayRef CreateDispatchHoldingArray() {
CFArrayCallBacks callBacks = {
0,
ObjectRetainCallBack,
ObjectReleaseCallBack,
NULL,
NULL
};
return CFArrayCreateMutable(kCFAllocatorDefault, 0, &callBacks);
}
我使用如下数组:
- (void) captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection {
CFArrayAppendValue(_pixelArray, sampleBuffer);
}
有人有更好的方法来做到这一点或任何建议?
非常感谢。