`TFPWriterJPEG`
pt		InitWriting
pt		WriteHeader
pt		WritePixels
pt		WriteMetadata
pt		InternalWrite
		Create
		Destroy

`TFPCustomImageWriter`
pt		InternalWrite
pt		InternalBeginFrames
pt		InternalWriteFrame
pt		InternalEndFrames
		ImageWrite
		FrameKinds
		BeginFrames
		WriteNextFrame
		EndFrames

`TFPCustomImageHandler`
pt		Progress
		Create