v4l2_to_drm.zip v4l2拿到YUYV数据,无memcpy给到drm(配置plane支持显示YUYV)上屏显示,VSYNC 上传者:camphor_tree时间:2022-01-15 Linux 下 v4l2 和 Qt 连接usb摄像头 源码注释很多很清晰哦!!! 使用Qt和V4L2连接USB摄像头,采集图片的方式为V4L2_PIX_FMT_MJPEG,也可修改代码切换到V4L2_PIX_FMT_YUYV,带yuyv转...
ret = ioctl(drmfd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &prime); if (WARN_ON(ret, "PRIME_HANDLE_TO_FD failed: %s\n", ERRSTR)) goto fail_gem; printf("dbuf_fd = %d\n", prime.fd); b->dbuf_fd = prime.fd; uint32_t offsets[4] = { 0 }; ...
v4l2_to_drm.zip v4l2拿到YUYV数据,无memcpy给到drm(配置plane支持显示YUYV)上屏显示,VSYNC 上传者:camphor_tree时间:2022-01-15 v4l2+drm+dmabuf实现零拷贝视频环回功能 本人用的平台是xilinx, zynqMP,提供的资源是参考的源码,可以实现在一块板子上面自动播放视频。 HDMI v4l2进, HDMI DRM出 刚好在做音视频相...
> It does not try to address all the problem reported in this thread but > instead focuses on the FMT and BUF(S) ioctls. > > Note that my primary goal is to unify handling for multiplanar and > singleplanar formats and extend things to support the "single dmabuf > storing all pixel...
至少可以说，处理大量的视频数据是具有挑战性的。流包含宝贵的实时数据，以在更合适的时间处理。在您获得...
KMS_FB_and_V4L2_How_to_Select_a_Graphics_and_Video_API
>>> single dmabuf storing all pixel planes (each being at a different >>> offset), and it seems that patching the VB2 core to support that is >>> not a trivial task. >>> >>> So here are a few questions for V4L/DMABUF experts: ...