QAVVideoCtrl 成员列表

成员的完整列表，这些成员属于 QAVVideoCtrl,包括所有继承而来的类成员

-	enableCamera:complete:	QAVVideoCtrl
-	fillExternalCaptureFrame:	QAVVideoCtrl
-	getCaptureSession	QAVVideoCtrl
-	getPreviewLayer	QAVVideoCtrl
-	getQualityTips	QAVVideoCtrl
	isCameraOn	QAVVideoCtrl
	isEnableExternalCapture	QAVVideoCtrl
-	setExternalCamAbility:	QAVVideoCtrl
-	setLocalVideoDelegate:	QAVVideoCtrl
-	setRemoteVideoDelegate:	QAVVideoCtrl
-	setScreenVideoDelegate:	QAVVideoCtrl
-	switchCamera:complete:	QAVVideoCtrl