Reference Manual - 1.0.1
IDirectFBScreen   GetEncoderDescriptions

Get a description of available display encoders.    得到可以显示编码器的描述符

GetEncoderDescriptions (
	IDirectFBScreen		*	thiz,
	DFBScreenEncoderDescription		*	ret_descriptions
);

All descriptions are written to the array pointed to by ret_descriptions. The number of encoders is returned by IDirectFBScreen::GetDescription().

所有设置描述符写到数组指针去用ret_descriptions,使用编码器返回用IDirectFBScreen::GetDescription().

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