__ __ __ __ _____ _ _ _____ _ _ _ | \/ | \ \ / / | __ \ (_) | | / ____| | | | | | \ / |_ __\ V / | |__) | __ ___ ____ _| |_ ___ | (___ | |__ ___| | | | |\/| | '__|> < | ___/ '__| \ \ / / _` | __/ _ \ \___ \| '_ \ / _ \ | | | | | | |_ / . \ | | | | | |\ V / (_| | || __/ ____) | | | | __/ | | |_| |_|_(_)_/ \_\ |_| |_| |_| \_/ \__,_|\__\___| |_____/|_| |_|\___V 2.1 if you need WebShell for Seo everyday contact me on Telegram Telegram Address : @jackleetFor_More_Tools:
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* v4l2-fh.h
*
* V4L2 file handle. Store per file handle data for the V4L2
* framework. Using file handles is optional for the drivers.
*
* Copyright (C) 2009--2010 Nokia Corporation.
*
* Contact: Sakari Ailus <sakari.ailus@iki.fi>
*/
#ifndef V4L2_FH_H
#define V4L2_FH_H
#include <linux/fs.h>
#include <linux/kconfig.h>
#include <linux/list.h>
#include <linux/videodev2.h>
struct video_device;
struct v4l2_ctrl_handler;
/**
* struct v4l2_fh - Describes a V4L2 file handler
*
* @list: list of file handlers
* @vdev: pointer to &struct video_device
* @ctrl_handler: pointer to &struct v4l2_ctrl_handler
* @prio: priority of the file handler, as defined by &enum v4l2_priority
*
* @wait: event' s wait queue
* @subscribe_lock: serialise changes to the subscribed list; guarantee that
* the add and del event callbacks are orderly called
* @subscribed: list of subscribed events
* @available: list of events waiting to be dequeued
* @navailable: number of available events at @available list
* @sequence: event sequence number
*
* @m2m_ctx: pointer to &struct v4l2_m2m_ctx
*/
struct v4l2_fh {
struct list_head list;
struct video_device *vdev;
struct v4l2_ctrl_handler *ctrl_handler;
enum v4l2_priority prio;
/* Events */
wait_queue_head_t wait;
struct mutex subscribe_lock;
struct list_head subscribed;
struct list_head available;
unsigned int navailable;
u32 sequence;
struct v4l2_m2m_ctx *m2m_ctx;
};
/**
* v4l2_fh_init - Initialise the file handle.
*
* @fh: pointer to &struct v4l2_fh
* @vdev: pointer to &struct video_device
*
* Parts of the V4L2 framework using the
* file handles should be initialised in this function. Must be called
* from driver's v4l2_file_operations->open\(\) handler if the driver
* uses &struct v4l2_fh.
*/
void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev);
/**
* v4l2_fh_add - Add the fh to the list of file handles on a video_device.
*
* @fh: pointer to &struct v4l2_fh
*
* .. note::
* The @fh file handle must be initialised first.
*/
void v4l2_fh_add(struct v4l2_fh *fh);
/**
* v4l2_fh_open - Ancillary routine that can be used as the open\(\) op
* of v4l2_file_operations.
*
* @filp: pointer to struct file
*
* It allocates a v4l2_fh and inits and adds it to the &struct video_device
* associated with the file pointer.
*/
int v4l2_fh_open(struct file *filp);
/**
* v4l2_fh_del - Remove file handle from the list of file handles.
*
* @fh: pointer to &struct v4l2_fh
*
* On error filp->private_data will be %NULL, otherwise it will point to
* the &struct v4l2_fh.
*
* .. note::
* Must be called in v4l2_file_operations->release\(\) handler if the driver
* uses &struct v4l2_fh.
*/
void v4l2_fh_del(struct v4l2_fh *fh);
/**
* v4l2_fh_exit - Release resources related to a file handle.
*
* @fh: pointer to &struct v4l2_fh
*
* Parts of the V4L2 framework using the v4l2_fh must release their
* resources here, too.
*
* .. note::
* Must be called in v4l2_file_operations->release\(\) handler if the
* driver uses &struct v4l2_fh.
*/
void v4l2_fh_exit(struct v4l2_fh *fh);
/**
* v4l2_fh_release - Ancillary routine that can be used as the release\(\) op
* of v4l2_file_operations.
*
* @filp: pointer to struct file
*
* It deletes and exits the v4l2_fh associated with the file pointer and
* frees it. It will do nothing if filp->private_data (the pointer to the
* v4l2_fh struct) is %NULL.
*
* This function always returns 0.
*/
int v4l2_fh_release(struct file *filp);
/**
* v4l2_fh_is_singular - Returns 1 if this filehandle is the only filehandle
* opened for the associated video_device.
*
* @fh: pointer to &struct v4l2_fh
*
* If @fh is NULL, then it returns 0.
*/
int v4l2_fh_is_singular(struct v4l2_fh *fh);
/**
* v4l2_fh_is_singular_file - Returns 1 if this filehandle is the only
* filehandle opened for the associated video_device.
*
* @filp: pointer to struct file
*
* This is a helper function variant of v4l2_fh_is_singular() with uses
* struct file as argument.
*
* If filp->private_data is %NULL, then it will return 0.
*/
static inline int v4l2_fh_is_singular_file(struct file *filp)
{
return v4l2_fh_is_singular(filp->private_data);
}
#endif /* V4L2_EVENT_H */
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| davinci | Folder | 0755 |
|
|
| drv-intf | Folder | 0755 |
|
|
| i2c | Folder | 0755 |
|
|
| tpg | Folder | 0755 |
|
|
| cec-notifier.h | File | 5.03 KB | 0644 |
|
| cec-pin.h | File | 2.79 KB | 0644 |
|
| cec.h | File | 17.87 KB | 0644 |
|
| demux.h | File | 22.69 KB | 0644 |
|
| dmxdev.h | File | 5.87 KB | 0644 |
|
| dvb-usb-ids.h | File | 19.46 KB | 0644 |
|
| dvb_ca_en50221.h | File | 4.35 KB | 0644 |
|
| dvb_demux.h | File | 10.77 KB | 0644 |
|
| dvb_frontend.h | File | 30.03 KB | 0644 |
|
| dvb_net.h | File | 2.25 KB | 0644 |
|
| dvb_ringbuffer.h | File | 8.32 KB | 0644 |
|
| dvb_vb2.h | File | 7.65 KB | 0644 |
|
| dvbdev.h | File | 14.43 KB | 0644 |
|
| frame_vector.h | File | 1.42 KB | 0644 |
|
| hevc-ctrls.h | File | 9.81 KB | 0644 |
|
| imx.h | File | 190 B | 0644 |
|
| jpeg.h | File | 500 B | 0644 |
|
| media-dev-allocator.h | File | 2.21 KB | 0644 |
|
| media-device.h | File | 17.65 KB | 0644 |
|
| media-devnode.h | File | 5.29 KB | 0644 |
|
| media-entity.h | File | 47.11 KB | 0644 |
|
| media-request.h | File | 11.96 KB | 0644 |
|
| rc-core.h | File | 12.27 KB | 0644 |
|
| rc-map.h | File | 14.41 KB | 0644 |
|
| rcar-fcp.h | File | 1.1 KB | 0644 |
|
| tuner-types.h | File | 7.54 KB | 0644 |
|
| tuner.h | File | 8.4 KB | 0644 |
|
| tveeprom.h | File | 3.3 KB | 0644 |
|
| v4l2-async.h | File | 11.27 KB | 0644 |
|
| v4l2-common.h | File | 19.96 KB | 0644 |
|
| v4l2-ctrls.h | File | 54.21 KB | 0644 |
|
| v4l2-dev.h | File | 20.11 KB | 0644 |
|
| v4l2-device.h | File | 18.61 KB | 0644 |
|
| v4l2-dv-timings.h | File | 9.08 KB | 0644 |
|
| v4l2-event.h | File | 6.01 KB | 0644 |
|
| v4l2-fh.h | File | 4.22 KB | 0644 |
|
| v4l2-flash-led-class.h | File | 5.75 KB | 0644 |
|
| v4l2-fwnode.h | File | 18.25 KB | 0644 |
|
| v4l2-h264.h | File | 2.85 KB | 0644 |
|
| v4l2-image-sizes.h | File | 827 B | 0644 |
|
| v4l2-ioctl.h | File | 33.52 KB | 0644 |
|
| v4l2-jpeg.h | File | 5.08 KB | 0644 |
|
| v4l2-mc.h | File | 7.78 KB | 0644 |
|
| v4l2-mediabus.h | File | 8.65 KB | 0644 |
|
| v4l2-mem2mem.h | File | 29.4 KB | 0644 |
|
| v4l2-rect.h | File | 5.71 KB | 0644 |
|
| v4l2-subdev.h | File | 73.22 KB | 0644 |
|
| videobuf-core.h | File | 6.81 KB | 0644 |
|
| videobuf-dma-contig.h | File | 909 B | 0644 |
|
| videobuf-dma-sg.h | File | 2.79 KB | 0644 |
|
| videobuf-vmalloc.h | File | 1.14 KB | 0644 |
|
| videobuf2-core.h | File | 51.92 KB | 0644 |
|
| videobuf2-dma-contig.h | File | 883 B | 0644 |
|
| videobuf2-dma-sg.h | File | 698 B | 0644 |
|
| videobuf2-dvb.h | File | 1.81 KB | 0644 |
|
| videobuf2-memops.h | File | 1.09 KB | 0644 |
|
| videobuf2-v4l2.h | File | 14.48 KB | 0644 |
|
| videobuf2-vmalloc.h | File | 509 B | 0644 |
|
| vsp1.h | File | 3.57 KB | 0644 |
|