dvb_net.h mpeg2-ctrls.h v4l2-dv-timings.h videobuf2-core.h dvb_ringbuffer.h rcar-fcp.h v4l2-event.h videobuf2-dma-contig.h linux_5.10/drivers/media/platform$ls##平台soc硬件video实例am437x exynos-gsc mtk-jpeg qcom s3c-camif sunxi aspeed-video.c fsl-viu.c mtk-mdp rcar_drif.c s...
CRM v4l2 event类型: #defineV4L_EVENT_CAM_REQ_MGR_SOF 0#defineV4L_EVENT_CAM_REQ_MGR_ERROR 1#defineV4L_EVENT_CAM_REQ_MGR_SOF_BOOT_TS 2 SOF:start of frame,一帧图开始传输。mipi csid收到sof立马产生中断 ERROR:camera不出图了等 v4l2_event_queue到v4l2 core camera_req_mgr_notify_message处理v4l...
h> #include <media/v4l2-event.h> #include <media/v4l2-common.h> // 声明结构体sv供v4l2_device_register使用 struct sv{ struct v4l2_device v4l2_dev; struct video_device vdev; }; static struct sv sdev; // 查询设备支持的功能 static int sv_querycap(struct file *file, void *priv, struct...
(*subscribe_event)(struct v4l2_subd、 ev *sd, struct v4l2_fh *fh, struct v4l2_event_subscription *sub); int (*unsubscribe_event)(struct v4l2_subdev *sd, struct v4l2_fh *fh, struct v4l2_event_subscription *sub); }; struct v4l2_subdev_tuner_ops { int (*standby)(struct v4l2_subdev *...
Event Process:事件管理(上层调用,中断等事件的接收和分发); Config Handle:配置管理(硬件拓扑结构,模组自适应列表); external device sensror:摄像头的接口主要有:USB,DVP.MIPI(CSI) Camera Modules:模组驱动(图像传感器,对焦电机,闪光灯等) Camera Interfac:接口驱动(MIPI, Sub-Lvds, HiSpi, Bt656, DC等) ...
event->timestamp.tv_nsec = ts.tv_nsec;kev->sev->first = sev_pos(kev->sev, 1);kev->sev->in_use--;spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);return 0;}int v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event,...
[ 86.241307] Workqueue: usb_hub_wq hub_event [ 86.241310] Call Trace: [ 86.241322] dump_stack+0x6d/0x8b [ 86.241345] v4l2_device_register+0x4a/0xe0 [videodev] [ 86.241354] uvc_probe+0x4eb/0x2a10 [uvcvideo] [ 86.241363] usb_probe_interface+0x149/0x300 ...
sub.type =UVC_EVENT_SETUP; ioctl(dev->fd, VIDIOC_SUBSCRIBE_EVENT, ); sub.type =UVC_EVENT_DATA; ioctl(dev->fd, VIDIOC_SUBSCRIBE_EVENT, ); sub.type =UVC_EVENT_STREAMON; ioctl(dev->fd, VIDIOC_SUBSCRIBE_EVENT, ); sub.type =UVC_EVENT_STREAMOFF; ...
1)比如,v4l2的event事件依托在v4l2 file handle上。 2)实现文件的多次打开。每个应用打开文件时,v4l2都会创建一个新file handle,并将文件相关的数据保存到其中,可以隔离不同的应用程序。 (2)struct v4l2_fh 1)每次通过 open 函数打开文件时,都会分配一个文件句柄。这个句柄的private_data 指向v4l2_fh结构体。
#include <linux/version.h>#include <linux/module.h>#include <linux/slab.h>#include <linux/usb.h>#include <media/v4l2-device.h>#include <media/v4l2-ioctl.h>#include <media/v4l2-ctrls.h>#include <media/v4l2-event.h>#include <media/videobuf2-v4l2.h>#include <media/videobuf2-vmalloc....