SyntekUSBVideoCamera
Functions | Variables
stk11xx-v4l.c File Reference

Driver for Syntek USB video camera. More...

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/kref.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/usb.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include "stk11xx.h"

Go to the source code of this file.

Functions

int v4l_stk11xx_select_video_mode (struct usb_stk11xx *dev, int width, int height)
 Select a video mode. More...
 
static int v4l_stk11xx_open (struct file *fp)
 Open the video device. More...
 
static int v4l_stk11xx_release (struct file *fp)
 Release an opened file. More...
 
static ssize_t v4l_stk11xx_read (struct file *fp, char __user *buf, size_t count, loff_t *f_pos)
 Read the video device. More...
 
static unsigned int v4l_stk11xx_poll (struct file *fp, poll_table *wait)
 Polling function. More...
 
static int v4l_stk11xx_mmap (struct file *fp, struct vm_area_struct *vma)
 Memory map. More...
 
static long v4l_stk11xx_do_ioctl (struct file *fp, unsigned int cmd, void __user *arg)
 Manage IOCTL. More...
 
static long v4l_stk11xx_ioctl (struct file *fp, unsigned int cmd, unsigned long arg)
 Manage IOCTL. More...
 
int v4l_stk11xx_register_video_device (struct usb_stk11xx *dev)
 Register the video device. More...
 
int v4l_stk11xx_unregister_video_device (struct usb_stk11xx *dev)
 Unregister the video device. More...
 

Variables

static struct v4l2_file_operations v4l_stk11xx_fops
 
const struct stk11xx_coord stk11xx_image_sizes [STK11XX_NBR_SIZES]
 
static struct v4l2_queryctrl stk11xx_controls []
 

Detailed Description

Driver for Syntek USB video camera.

Author
Nicolas VIVIEN
Date
2006-10-23
Version
v2.2.x
Note
Copyright (C) Nicolas VIVIEN
Licences

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

SubVersion
$Date$ $Revision$ $Author$ $HeadURL$

Definition in file stk11xx-v4l.c.

Function Documentation

static long v4l_stk11xx_do_ioctl ( struct file *  fp,
unsigned int  cmd,
void __user *  arg 
)
static
static long v4l_stk11xx_ioctl ( struct file *  fp,
unsigned int  cmd,
unsigned long  arg 
)
static

Manage IOCTL.

Parameters
fpFile pointer
cmdCommand
argArguements of the command
Returns
0 if all is OK

This function permits to manage all the IOCTL from the application.

Definition at line 1460 of file stk11xx-v4l.c.

References usb_stk11xx::modlock, STK_DEBUG, and v4l_stk11xx_do_ioctl().

static int v4l_stk11xx_mmap ( struct file *  fp,
struct vm_area_struct *  vma 
)
static

Memory map.

Parameters
fpFile pointer
vmaVMA structure
Returns
0 if all is OK

This function permits to map a memory space.

Definition at line 583 of file stk11xx-v4l.c.

References stk11xx_image_buf::offset, STK11XX_MAX_IMAGES, STK_ERROR, and STK_STREAM.

static int v4l_stk11xx_open ( struct file *  fp)
static
static unsigned int v4l_stk11xx_poll ( struct file *  fp,
poll_table *  wait 
)
static

Polling function.

Parameters
fpFile pointer
wait
Returns
0 if all is OK

Definition at line 545 of file stk11xx-v4l.c.

References STK_STREAM, and usb_stk11xx::wait_frame.

static ssize_t v4l_stk11xx_read ( struct file *  fp,
char __user *  buf,
size_t  count,
loff_t *  f_pos 
)
static

Read the video device.

Parameters
fpFile pointer
Return values
bufBuffer in user space
count
f_pos
Returns
Count value

This function is called by the application is reading the video device.

Definition at line 446 of file stk11xx-v4l.c.

References usb_stk11xx::modlock, stk11xx_image_buf::offset, stk11xx_handle_frame(), stk11xx_next_image(), STK_STREAM, and usb_stk11xx::wait_frame.

int v4l_stk11xx_register_video_device ( struct usb_stk11xx dev)

Register the video device.

Parameters
devDevice structure
Returns
0 if all is OK

This function permits to register the USB device to the video device.

Definition at line 1497 of file stk11xx-v4l.c.

References DRIVER_DESC, usb_stk11xx::interface, STK_ERROR, STK_INFO, v4l_stk11xx_fops, and usb_stk11xx::vdev.

Referenced by usb_stk11xx_probe().

static int v4l_stk11xx_release ( struct file *  fp)
static

Release an opened file.

Parameters
fpFile pointer
Returns
0 if all is OK

This function permits to release an opened file with the 'open' method.

Definition at line 401 of file stk11xx-v4l.c.

References dev_stk11xx_camera_asleep(), dev_stk11xx_camera_off(), dev_stk11xx_stop_stream(), stk11xx_free_buffers(), STK_ERROR, usb_stk11xx_isoc_cleanup(), and usb_stk11xx::vopen.

int v4l_stk11xx_select_video_mode ( struct usb_stk11xx dev,
int  width,
int  height 
)

Select a video mode.

Parameters
dev
widthWidth of wished resolution
heightHeight of wished resolution
Returns
0 if all is OK

This function permits to check and select a video mode.

Definition at line 156 of file stk11xx-v4l.c.

References stk11xx_video::palette, STK11XX_PAL, STK11XX_SXGA, STK11XX_VGA, STK_DEBUG, usb_stk11xx::vsettings, usb_stk11xx::webcam_type, stk11xx_coord::x, and stk11xx_coord::y.

Referenced by v4l_stk11xx_do_ioctl(), and v4l_stk11xx_open().

int v4l_stk11xx_unregister_video_device ( struct usb_stk11xx dev)

Unregister the video device.

Parameters
devDevice structure
Returns
0 if all is OK

This function permits to unregister the video device.

Definition at line 1530 of file stk11xx-v4l.c.

References STK_INFO, and usb_stk11xx::vdev.

Referenced by usb_stk11xx_disconnect().

Variable Documentation

stk11xx_controls
static

List of all V4Lv2 controls supported by the driver Default_value field will be overriden at runtime

Definition at line 78 of file stk11xx-v4l.c.

Referenced by v4l_stk11xx_do_ioctl().

const struct stk11xx_coord stk11xx_image_sizes[STK11XX_NBR_SIZES]
Initial value:
= {
{ 80, 60 },
{ 128, 96 },
{ 160, 120 },
{ 213, 160 },
{ 320, 240 },
{ 640, 480 },
{ 720, 576 },
{ 800, 600 },
{ 1024, 768 },
{ 1280, 1024 }
}

List of all resolutions supported by the driver

Definition at line 59 of file stk11xx-v4l.c.

Referenced by show_informations().

static struct v4l2_file_operations v4l_stk11xx_fops
static
Initial value:
= {
.owner = THIS_MODULE,
.release = v4l_stk11xx_release,
}
static int v4l_stk11xx_release(struct file *fp)
Release an opened file.
Definition: stk11xx-v4l.c:401
static long v4l_stk11xx_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
Manage IOCTL.
Definition: stk11xx-v4l.c:1460
static unsigned int v4l_stk11xx_poll(struct file *fp, poll_table *wait)
Polling function.
Definition: stk11xx-v4l.c:545
static ssize_t v4l_stk11xx_read(struct file *fp, char __user *buf, size_t count, loff_t *f_pos)
Read the video device.
Definition: stk11xx-v4l.c:446
static int v4l_stk11xx_mmap(struct file *fp, struct vm_area_struct *vma)
Memory map.
Definition: stk11xx-v4l.c:583
static int v4l_stk11xx_open(struct file *fp)
Open the video device.
Definition: stk11xx-v4l.c:308

This variable contains some callback

Definition at line 52 of file stk11xx-v4l.c.

Referenced by v4l_stk11xx_register_video_device().