在进行V4L2开发中,常用的命令标识符如下: (1)VIDIOC_REQBUFS:分配内存; (2)VIDIOC_QUERYBUF:把VIDIOC_REQBUFS中分配的数据缓存转换成物理地址; (3)...VIDIOC_CROPCAP:查询驱动的修剪功能; (9)VIDIOC_S_CROP:设置视频信号的边框; (10)VIDIOC_G_CROP:读取视频信号的边框; (11)VIDIOC_QBUF:把数据从缓存中读取...
+ .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_cropcap = vpbe_display_cropcap, .vidioc_g_crop = vpbe_display_g_crop, ___ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.comhttp://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source...
Crop Capability Video Capture: Bounds : Left 0, Top 0, Width 1280, Height 720 Default : Left 0, Top 0, Width 1280, Height 720 Pixel Aspect: 1/1 Selection: crop_default, Left 0, Top 0, Width 1280, Height 720, Flags: Selection: crop_bounds, Left 0, Top 0, Width 1280,...
it receives from v4l2 device. But I can't seem to find a way to set struct v4l2_cropcap.pixelaspect when I'm outputting data to the device and the result is that VLC assumes pixelaspect is 1:1. I was hoping that VIDIOC_S_CROP [4] would allow setting pixelaspect but according to ...
video, g_frame_interval, &terminal_sensor->fi); if (ret) terminal_sensor->fi.interval = (struct v4l2_fract) {1, 30}; rkcif_sync_crop_info(stream); } ... /* * 基于RV1126平台imx291分析 --- rkcif_mipi注册 * https://blog.csdn.net/ldl617/article/details/115551981 ...
{ .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_create_bufs = vb2_ioctl_create_bufs, + .vidioc_expbuf = vb2_ioctl_expbuf, .vidioc_cropcap = vpbe_display_cropcap, .vidioc_g_crop = vpbe_display_g_crop, -- 1.9.1 ___ Davinci-linux-open-sourc...