char name[V4L2_DEVICE_NAME_SIZE]; void (*notify)(struct v4l2_subdev *sd, unsigned int notification, void *arg); struct v4l2_ctrl_handler *ctrl_handler; struct v4l2_prio_state prio; struct mutex ioctl_lock; struct kref ref; void (*release)(struct v4l2_device *v4l2_dev); }; [cpp]...
struct v4l2_requestbuffers 解释: struct v4l2_requestbuffers 是Video4Linux2(V4L2)API 中定义的一个结构体,用于请求视频缓冲区。在视频捕获或流处理中,这个结构体用于指定缓冲区的数量、类型和内存类型。 在Video4Linux2 API中的作用: 在V4L2 API中,struct v4l2_requestbuffers 用于初始化视频捕获或输出的缓冲区。通...
- cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; - return 0; } @@ -2699,6 +2696,7 @@ static int coda_register_device(struct coda_dev *dev, int i) vfd->lock = &dev->dev_mutex; vfd->v4l2_dev = &dev->v4l2_dev; vfd->vfl_dir = VFL_DIR_M2M; + vfd->device...
+++ b/include/uapi/linux/videodev2.h @@ -1269,6 +1269,7 @@ struct v4l2_ext_controls { #define V4L2_CTRL_ID_MASK (0x0fffffff) #define V4L2_CTRL_ID2CLASS(id) ((id) & 0x0fff0000UL) #define V4L2_CTRL_DRIVER_PRIV(id) (((id) & 0xffff) >= 0x1000) +#define V4L2_CTRL_MAX...
V4L2驱动视频开发要点 2012-04-09 15:16 − V4L2是V4L的升级版本,为linux下视频设备程序提供了一套接口规范。包括一套数据结构和底层V4L2驱动接口。 1、常用的结构体在内核目录include/linux/videodev2.h中定义 struct v4l2_requestbuffers ... javawebsoa 0 453 关于Linux的视频编程(v4l2编程) 2009-09-...
Open Description wammachado I have the same problem on ubuntu 20.04. I found a threadRemixVSL/iomemory-vsl4#25about this issue. Still looking for... Korynkai mentioned thison Jan 25, 2021 Korynkai commentedon Jan 25, 2021 Korynkai
struct mutex lock; - struct spinlock slock; + spinlock_t slock; struct v4l2_device v4l2_dev; struct video_device *vfd_encoder; -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org ...
+++ b/include/uapi/linux/videodev2.h @@ -737,7 +737,7 @@ struct v4l2_window { struct v4l2_captureparm { __u32 capability; /* Supported modes */ __u32 capturemode; /* Current mode */ - struct v4l2_fract timeperframe; /* Time per frame in .1us units */ ...