如何由m3的Utils_memFrameAlloc函数申请的空间,通过a8的linux kernel可以访问到,我需要将这个地址映射到pcie存储空间。
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如何由m3的Utils_memFrameAlloc函数申请的空间,通过a8的linux kernel可以访问到,我需要将这个地址映射到pcie存储空间。
你好,
下面两个SR的buffer, A8都可以访问到:
o Bitstream Buffer (SR1) – Shared Region 1. This shared region is meant to receive
encoded bitstream from Video M3 processor to A8 processor, send bitstream from A8 to
Video M3 for decoding and for sharing the buffers between A8 and DSP for Scene
Change Detection algorithm results. This region is cached on A8.
o Frame Buffer (SR2) – Shared Region 2. This shared region is used for allocating
frame buffers for capturing video data, scaling, displaying video frames. The shared
region is accessible from A8, Video M3, VPSS M3 and DSP. This is non-tiled region.