DRM可以直接访问DRMclients的硬件。DRM驱动用来处理DMA,内存管理,资源锁以及安全硬件访问。为了同时支持多个3D应用,3D图形卡硬件必须作为一个共享资源,因此需要锁来提供互斥访问。DMA传输和AGP接口用来图形操作的buffers到显卡硬件,因此要防止客户端越权访问显卡硬件。LinuxDRM层用来支持那些复杂的显卡设备,这些显卡设备通常都...
* ion : use ion device under Linux, MppBuffer will encapsulte ion file handle * ext_dma : the DMABUF(DMA buffers) come from the application * drm : use the drm device interface for memory management */ typedef enum { MPP_BUFFER_TYPE_NORMAL, MPP_BUFFER_TYPE_ION,...
mpp_rt: NOT found ion allocator mpp_rt: found drm allocator h264d_dpb: dpb_size error. mpi_dec_test: decode_get_frame get info changed found mpi_dec_test: decoder require buffer w:h [128:128] stride [128:128] buf_size 32768 ...
21 + allocator_valid[MPP_BUFFER_TYPE_ION] = !access("/dev/ion", F_OK | R_OK | W_OK); 22 + - allocator_valid[MPP_BUFFER_TYPE_DRM] = !access("/dev/dri/card0", F_OK | R_OK | W_OK); 23 + + allocator_valid[MPP_BUFFER_TYPE_DRM] = !access("/dev/dri/renderD128",...
(一般是 dmabuf/ion/drm).在 Android 平台上,Mediaserver 通过 gralloc 从 SurfaceFlinger 获取显示用内存 , 把 gralloc 得到的文件句柄提交 ( commit ) 到 MppBufferGroup 里 , 再把 MppBufferGroup 通过 control 接口 MPP_DEC_SET_EXT_BUF_GROUP 命令配置给解码器,然后 MPP 解码器将循环使用 gralloc 得到的...
mpp[934]: mpi_enc_utils:type: 7 mpp[934]: mpi_enc_test: mpi_enc_test start mpp[934]: mpp_rt: NOT found ion allocator mpp[934]: mpp_rt: found drm allocator mpp[934]: mpp_info: mpp version: unknown mpp versionformissing VCS info ...
ffmpeg_rkmpp_drm 是一个用于处理 RTM (Real-Time Media) 的库,它使用 FFmpeg 中的 Rkmppd 插件进行硬解码。DRM (Digital Rights Management) 是一种保护数字媒体内容版权的技术,通常用于防止未经授权的复制、分发或修改。ff
Most probable point (MPP)–based dimensional reduction method (DRM) has been developed to accurately estimate PF using the Gaussian quadrature integration method. However, the existing MPP-based DRM is computationally expensive for highly nonlinear and/or high dimensional problems since it needs to ...
mpp[14256]: mpi_dec_test: 0xd249220 decoder require buffer w:h [800:600] stride [800:608]...
mpp_rt_test: mpp found ion buffer is invalid mpp_rt_test: mpp found drm buffer is invalid ...