GstCpu Request the features of the CPU. This module can be used when developing plugins. It is typically used to enable special optimisations based on the features of the CPU. @GST_CPU_FLAG_MMX: @GST_CPU_FLAG_SSE: @GST_CPU_FLAG_MMXEXT: @GST_CPU_FLAG_3DNOW: Request a set of bits specifiying the features of the CPU. @Returns: the features of the CPU