1, clImportMemoryARM 可以导入HAL_PIXEL_FORMAT_YCrCb_420_SP (NV21格式的图)的GraphicBuffer吗?2, 支持cl_arm_import_memory_host的话, 任何host 端malloc出来的memory都可以 clImportMemoryARM吗, 有无约束?3, GraphicBuffer lock&lockYCbCr 出来的内存地址(CPU可用)可否用cl_arm_import_memory_host 来clImportMemoryARM ?4, 其他OPENCL context 关联的cl_mem map出来的host ptr 是否可以通过可否用cl_arm_import_memory_host 来clImportMemoryARM