ioctl(4, VIDIOC_ENUM_FMT // 列举格式 6. ioctl(4, VIDIOC_G_PARM 7. for() ioctl(4, VIDIOC_QUERYCTRL // 查询属性(比如说亮度值最小值、最大值、默认值) // 8~10都是通过v4l2_read_attr来调用的 8. ioctl(4, VIDIOC_G_STD // 获得当前使用的标准(制式), 不是必需的 9. ioctl(4, VIDIOC...
ioctl(4, VIDIOC_ENUM_FMT // 列举格式 6. ioctl(4, VIDIOC_G_PARM 7. for() ioctl(4, VIDIOC_QUERYCTRL // 查询属性(比如说亮度值最小值、最大值、默认值) // 8~10都是通过v4l2_read_attr来调用的 8. ioctl(4, VIDIOC_G_STD // 获得当前使用的标准(制式), 不是必需的 9. ioctl(4, VIDIOC...
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, //获取当前驱动支持的视频格式 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, //读取当前驱动的频捕获格式 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, //设置当前驱动的频捕获格式 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_...
ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: '422P' Name : planar YUV 422 Size: Discrete 2592x1936 Size: Discrete 2048x1536 Size: Discrete 1920x1080 Size: Discrete 1600x1200 Size: Discrete 1280x960 Size: Discrete 1280x720 Size: Discrete 1024x768...
$ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT 👍 5 IvanUAH commented Jul 30, 2020 Did some one have solution for this issue? sijanec commented Jul 31, 2020 via email not a solution but I can recommend you akvcam ( https://github.com/webcamoid/akvcam) for virtual camera...
.vidioc_enum_fmt_vid_out = uvc_ioctl_enum_fmt_vid_out, .vidioc_g_fmt_vid_cap = uvc_ioctl_g_fmt_vid_cap,//获取格式、分辨率 .vidioc_g_fmt_vid_out = uvc_ioctl_g_fmt_vid_out, .vidioc_s_fmt_vid_cap = uvc_ioctl_s_fmt_vid_cap,//先try测试,然后把要设置的格式/分辨率存起来 ...
通常用 VIDIOC_S_FMT 命令通过结构 v4l2_format 初始化捕获视频的格式,如果要改变格式则用 VIDIOC_TRY_FMT 命令:[cpp] view plain copystruct v4l2_format { enum v4l2_buf_type type; union { struct v4l2_pix_format pix; /* V4L2_BUF_TYPE_VIDEO_CAPTURE */ struct v4l2_window win; /* V4L2_...
status =xioctl(fd, VIDIOC_ENUM_FMT, &fdesc);if(status != PJ_SUCCESS)break;for(k=0; k<PJ_ARRAY_SIZE(v4l2_fmt_maps); ++k) {if(v4l2_fmt_maps[k].v4l2_fmt_id == fdesc.pixelformat) { fmt_cap[fmt_cnt++] = v4l2_fmt_maps[k].pjmedia_fmt_id; ...
Video input set to 0 (Input 1: Camera, ok) ioctl: VIDIOC_ENUM_FMT Type: Video Capture ...
v4l2-ctl -d /dev/video1 --list-formats-ext ioctl: VIDIOC_ENUM_FMT Index : 0 Type : Video Capture Pixel Format: 'YUYV' Name : YUYV 4:2:2 Size: Discrete 640x480 Interval: Discrete 0.033s (30.000 fps) Size: Discrete 160x120 Interval: Discrete 0.033s (30.000 fps) Size...