![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
Config option typo: -#ifdef CONFIG_V4L1_COMPAT +#ifdef CONFIG_VIDEO_V4L1_COMPAT Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
1691 lines
39 KiB
C
1691 lines
39 KiB
C
/*
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* Video capture interface for Linux version 2
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*
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* A generic video device interface for the LINUX operating system
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* using a set of device structures/vectors for low level operations.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alan Cox, <alan@redhat.com> (version 1)
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* Mauro Carvalho Chehab <mchehab@infradead.org> (version 2)
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*
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* Fixes: 20000516 Claudio Matsuoka <claudio@conectiva.com>
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* - Added procfs support
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*/
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#define dbgarg(cmd, fmt, arg...) \
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if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
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printk (KERN_DEBUG "%s: ", vfd->name); \
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v4l_printk_ioctl(cmd); \
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printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
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#define dbgarg2(fmt, arg...) \
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if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \
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printk (KERN_DEBUG "%s: " fmt, vfd->name, ## arg);
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/smp_lock.h>
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#include <linux/mm.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/kmod.h>
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#include <linux/slab.h>
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#include <asm/uaccess.h>
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#include <asm/system.h>
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#define __OLD_VIDIOC_ /* To allow fixing old calls*/
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#include <linux/videodev2.h>
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#ifdef CONFIG_VIDEO_V4L1
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#include <linux/videodev.h>
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#endif
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#include <media/v4l2-common.h>
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#define VIDEO_NUM_DEVICES 256
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#define VIDEO_NAME "video4linux"
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/*
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* sysfs stuff
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*/
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static ssize_t show_name(struct class_device *cd, char *buf)
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{
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struct video_device *vfd = container_of(cd, struct video_device,
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class_dev);
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return sprintf(buf,"%.*s\n",(int)sizeof(vfd->name),vfd->name);
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}
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static CLASS_DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
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struct video_device *video_device_alloc(void)
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{
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struct video_device *vfd;
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vfd = kzalloc(sizeof(*vfd),GFP_KERNEL);
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return vfd;
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}
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void video_device_release(struct video_device *vfd)
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{
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kfree(vfd);
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}
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static void video_release(struct class_device *cd)
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{
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struct video_device *vfd = container_of(cd, struct video_device,
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class_dev);
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#if 1
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/* needed until all drivers are fixed */
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if (!vfd->release)
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return;
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#endif
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vfd->release(vfd);
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}
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static struct class video_class = {
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.name = VIDEO_NAME,
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.release = video_release,
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};
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/*
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* Active devices
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*/
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static struct video_device *video_device[VIDEO_NUM_DEVICES];
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static DEFINE_MUTEX(videodev_lock);
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struct video_device* video_devdata(struct file *file)
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{
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return video_device[iminor(file->f_dentry->d_inode)];
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}
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/*
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* Open a video device - FIXME: Obsoleted
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*/
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static int video_open(struct inode *inode, struct file *file)
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{
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unsigned int minor = iminor(inode);
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int err = 0;
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struct video_device *vfl;
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const struct file_operations *old_fops;
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if(minor>=VIDEO_NUM_DEVICES)
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return -ENODEV;
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mutex_lock(&videodev_lock);
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vfl=video_device[minor];
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if(vfl==NULL) {
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mutex_unlock(&videodev_lock);
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request_module("char-major-%d-%d", VIDEO_MAJOR, minor);
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mutex_lock(&videodev_lock);
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vfl=video_device[minor];
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if (vfl==NULL) {
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mutex_unlock(&videodev_lock);
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return -ENODEV;
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}
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}
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old_fops = file->f_op;
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file->f_op = fops_get(vfl->fops);
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if(file->f_op->open)
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err = file->f_op->open(inode,file);
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if (err) {
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fops_put(file->f_op);
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file->f_op = fops_get(old_fops);
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}
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fops_put(old_fops);
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mutex_unlock(&videodev_lock);
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return err;
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}
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/*
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* helper function -- handles userspace copying for ioctl arguments
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*/
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#ifdef __OLD_VIDIOC_
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static unsigned int
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video_fix_command(unsigned int cmd)
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{
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switch (cmd) {
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case VIDIOC_OVERLAY_OLD:
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cmd = VIDIOC_OVERLAY;
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break;
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case VIDIOC_S_PARM_OLD:
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cmd = VIDIOC_S_PARM;
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break;
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case VIDIOC_S_CTRL_OLD:
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cmd = VIDIOC_S_CTRL;
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break;
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case VIDIOC_G_AUDIO_OLD:
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cmd = VIDIOC_G_AUDIO;
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break;
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case VIDIOC_G_AUDOUT_OLD:
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cmd = VIDIOC_G_AUDOUT;
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break;
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case VIDIOC_CROPCAP_OLD:
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cmd = VIDIOC_CROPCAP;
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break;
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}
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return cmd;
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}
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#endif
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/*
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* Obsolete usercopy function - Should be removed soon
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*/
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int
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video_usercopy(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg,
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int (*func)(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg))
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{
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char sbuf[128];
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void *mbuf = NULL;
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void *parg = NULL;
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int err = -EINVAL;
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int is_ext_ctrl;
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size_t ctrls_size = 0;
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void __user *user_ptr = NULL;
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#ifdef __OLD_VIDIOC_
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cmd = video_fix_command(cmd);
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#endif
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is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
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cmd == VIDIOC_TRY_EXT_CTRLS);
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/* Copy arguments into temp kernel buffer */
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switch (_IOC_DIR(cmd)) {
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case _IOC_NONE:
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parg = NULL;
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break;
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case _IOC_READ:
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case _IOC_WRITE:
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case (_IOC_WRITE | _IOC_READ):
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if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
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parg = sbuf;
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} else {
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/* too big to allocate from stack */
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mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
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if (NULL == mbuf)
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return -ENOMEM;
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parg = mbuf;
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}
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err = -EFAULT;
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if (_IOC_DIR(cmd) & _IOC_WRITE)
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if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
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goto out;
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break;
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}
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if (is_ext_ctrl) {
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struct v4l2_ext_controls *p = parg;
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/* In case of an error, tell the caller that it wasn't
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a specific control that caused it. */
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p->error_idx = p->count;
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user_ptr = (void __user *)p->controls;
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if (p->count) {
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ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
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/* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
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mbuf = kmalloc(ctrls_size, GFP_KERNEL);
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err = -ENOMEM;
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if (NULL == mbuf)
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goto out_ext_ctrl;
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err = -EFAULT;
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if (copy_from_user(mbuf, user_ptr, ctrls_size))
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goto out_ext_ctrl;
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p->controls = mbuf;
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}
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}
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/* call driver */
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err = func(inode, file, cmd, parg);
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if (err == -ENOIOCTLCMD)
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err = -EINVAL;
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if (is_ext_ctrl) {
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struct v4l2_ext_controls *p = parg;
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p->controls = (void *)user_ptr;
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if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
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err = -EFAULT;
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goto out_ext_ctrl;
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}
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if (err < 0)
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goto out;
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out_ext_ctrl:
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/* Copy results into user buffer */
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switch (_IOC_DIR(cmd))
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{
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case _IOC_READ:
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case (_IOC_WRITE | _IOC_READ):
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if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
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err = -EFAULT;
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break;
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}
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out:
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kfree(mbuf);
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return err;
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}
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/*
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* open/release helper functions -- handle exclusive opens
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* Should be removed soon
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*/
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int video_exclusive_open(struct inode *inode, struct file *file)
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{
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struct video_device *vfl = video_devdata(file);
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int retval = 0;
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mutex_lock(&vfl->lock);
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if (vfl->users) {
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retval = -EBUSY;
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} else {
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vfl->users++;
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}
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mutex_unlock(&vfl->lock);
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return retval;
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}
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int video_exclusive_release(struct inode *inode, struct file *file)
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{
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struct video_device *vfl = video_devdata(file);
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vfl->users--;
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return 0;
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}
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static char *v4l2_memory_names[] = {
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[V4L2_MEMORY_MMAP] = "mmap",
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[V4L2_MEMORY_USERPTR] = "userptr",
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[V4L2_MEMORY_OVERLAY] = "overlay",
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};
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/* FIXME: Those stuff are replicated also on v4l2-common.c */
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static char *v4l2_type_names_FIXME[] = {
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[V4L2_BUF_TYPE_VIDEO_CAPTURE] = "video-cap",
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[V4L2_BUF_TYPE_VIDEO_OVERLAY] = "video-over",
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[V4L2_BUF_TYPE_VIDEO_OUTPUT] = "video-out",
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[V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap",
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[V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out",
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[V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out",
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[V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-capture",
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[V4L2_BUF_TYPE_PRIVATE] = "private",
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};
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static char *v4l2_field_names_FIXME[] = {
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[V4L2_FIELD_ANY] = "any",
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[V4L2_FIELD_NONE] = "none",
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[V4L2_FIELD_TOP] = "top",
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[V4L2_FIELD_BOTTOM] = "bottom",
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[V4L2_FIELD_INTERLACED] = "interlaced",
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[V4L2_FIELD_SEQ_TB] = "seq-tb",
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[V4L2_FIELD_SEQ_BT] = "seq-bt",
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[V4L2_FIELD_ALTERNATE] = "alternate",
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};
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#define prt_names(a,arr) (((a)>=0)&&((a)<ARRAY_SIZE(arr)))?arr[a]:"unknown"
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static void dbgbuf(unsigned int cmd, struct video_device *vfd,
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struct v4l2_buffer *p)
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{
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struct v4l2_timecode *tc=&p->timecode;
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dbgarg (cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, "
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"bytesused=%d, flags=0x%08d, "
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"field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx\n",
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(p->timestamp.tv_sec/3600),
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(int)(p->timestamp.tv_sec/60)%60,
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(int)(p->timestamp.tv_sec%60),
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p->timestamp.tv_usec,
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p->index,
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prt_names(p->type,v4l2_type_names_FIXME),
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p->bytesused,p->flags,
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p->field,p->sequence,
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prt_names(p->memory,v4l2_memory_names),
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p->m.userptr);
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dbgarg2 ("timecode= %02d:%02d:%02d type=%d, "
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"flags=0x%08d, frames=%d, userbits=0x%08x\n",
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tc->hours,tc->minutes,tc->seconds,
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tc->type, tc->flags, tc->frames, *(__u32 *) tc->userbits);
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}
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static inline void dbgrect(struct video_device *vfd, char *s,
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struct v4l2_rect *r)
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{
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dbgarg2 ("%sRect start at %dx%d, size= %dx%d\n", s, r->left, r->top,
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r->width, r->height);
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};
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static inline void v4l_print_pix_fmt (struct video_device *vfd,
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struct v4l2_pix_format *fmt)
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{
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dbgarg2 ("width=%d, height=%d, format=0x%08x, field=%s, "
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"bytesperline=%d sizeimage=%d, colorspace=%d\n",
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fmt->width,fmt->height,fmt->pixelformat,
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prt_names(fmt->field,v4l2_field_names_FIXME),
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fmt->bytesperline,fmt->sizeimage,fmt->colorspace);
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};
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|
|
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static int check_fmt (struct video_device *vfd, enum v4l2_buf_type type)
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{
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switch (type) {
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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if (vfd->vidioc_try_fmt_cap)
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return (0);
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break;
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case V4L2_BUF_TYPE_VIDEO_OVERLAY:
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if (vfd->vidioc_try_fmt_overlay)
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return (0);
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break;
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case V4L2_BUF_TYPE_VBI_CAPTURE:
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if (vfd->vidioc_try_fmt_vbi)
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return (0);
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break;
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case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
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if (vfd->vidioc_try_fmt_vbi_output)
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return (0);
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break;
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case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
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if (vfd->vidioc_try_fmt_vbi_capture)
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return (0);
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break;
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case V4L2_BUF_TYPE_VIDEO_OUTPUT:
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if (vfd->vidioc_try_fmt_video_output)
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return (0);
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break;
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case V4L2_BUF_TYPE_VBI_OUTPUT:
|
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if (vfd->vidioc_try_fmt_vbi_output)
|
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return (0);
|
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break;
|
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case V4L2_BUF_TYPE_PRIVATE:
|
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if (vfd->vidioc_try_fmt_type_private)
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return (0);
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break;
|
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}
|
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return (-EINVAL);
|
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}
|
|
|
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static int __video_do_ioctl(struct inode *inode, struct file *file,
|
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unsigned int cmd, void *arg)
|
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{
|
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struct video_device *vfd = video_devdata(file);
|
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void *fh = file->private_data;
|
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int ret = -EINVAL;
|
|
|
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if ( (vfd->debug & V4L2_DEBUG_IOCTL) &&
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!(vfd->debug | V4L2_DEBUG_IOCTL_ARG)) {
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v4l_print_ioctl(vfd->name, cmd);
|
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}
|
|
|
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switch(cmd) {
|
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/* --- capabilities ------------------------------------------ */
|
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case VIDIOC_QUERYCAP:
|
|
{
|
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struct v4l2_capability *cap = (struct v4l2_capability*)arg;
|
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memset(cap, 0, sizeof(*cap));
|
|
|
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if (!vfd->vidioc_querycap)
|
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break;
|
|
|
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ret=vfd->vidioc_querycap(file, fh, cap);
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if (!ret)
|
|
dbgarg (cmd, "driver=%s, card=%s, bus=%s, "
|
|
"version=0x%08x, "
|
|
"capabilities=0x%08x\n",
|
|
cap->driver,cap->card,cap->bus_info,
|
|
cap->version,
|
|
cap->capabilities);
|
|
break;
|
|
}
|
|
|
|
/* --- priority ------------------------------------------ */
|
|
case VIDIOC_G_PRIORITY:
|
|
{
|
|
enum v4l2_priority *p=arg;
|
|
|
|
if (!vfd->vidioc_g_priority)
|
|
break;
|
|
ret=vfd->vidioc_g_priority(file, fh, p);
|
|
if (!ret)
|
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dbgarg(cmd, "priority is %d\n", *p);
|
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break;
|
|
}
|
|
case VIDIOC_S_PRIORITY:
|
|
{
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|
enum v4l2_priority *p=arg;
|
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|
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if (!vfd->vidioc_s_priority)
|
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break;
|
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dbgarg(cmd, "setting priority to %d\n", *p);
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ret=vfd->vidioc_s_priority(file, fh, *p);
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break;
|
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}
|
|
|
|
/* --- capture ioctls ---------------------------------------- */
|
|
case VIDIOC_ENUM_FMT:
|
|
{
|
|
struct v4l2_fmtdesc *f = arg;
|
|
enum v4l2_buf_type type;
|
|
unsigned int index;
|
|
|
|
index = f->index;
|
|
type = f->type;
|
|
memset(f,0,sizeof(*f));
|
|
f->index = index;
|
|
f->type = type;
|
|
|
|
switch (type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
if (vfd->vidioc_enum_fmt_cap)
|
|
ret=vfd->vidioc_enum_fmt_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (vfd->vidioc_enum_fmt_overlay)
|
|
ret=vfd->vidioc_enum_fmt_overlay(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
if (vfd->vidioc_enum_fmt_vbi)
|
|
ret=vfd->vidioc_enum_fmt_vbi(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
if (vfd->vidioc_enum_fmt_vbi_output)
|
|
ret=vfd->vidioc_enum_fmt_vbi_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
if (vfd->vidioc_enum_fmt_vbi_capture)
|
|
ret=vfd->vidioc_enum_fmt_vbi_capture(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (vfd->vidioc_enum_fmt_video_output)
|
|
ret=vfd->vidioc_enum_fmt_video_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
if (vfd->vidioc_enum_fmt_vbi_output)
|
|
ret=vfd->vidioc_enum_fmt_vbi_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (vfd->vidioc_enum_fmt_type_private)
|
|
ret=vfd->vidioc_enum_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
if (!ret)
|
|
dbgarg (cmd, "index=%d, type=%d, flags=%d, "
|
|
"description=%s,"
|
|
" pixelformat=0x%8x\n",
|
|
f->index, f->type, f->flags,
|
|
f->description,
|
|
f->pixelformat);
|
|
|
|
break;
|
|
}
|
|
case VIDIOC_G_FMT:
|
|
{
|
|
struct v4l2_format *f = (struct v4l2_format *)arg;
|
|
enum v4l2_buf_type type=f->type;
|
|
|
|
memset(&f->fmt.pix,0,sizeof(f->fmt.pix));
|
|
f->type=type;
|
|
|
|
/* FIXME: Should be one dump per type */
|
|
dbgarg (cmd, "type=%s\n", prt_names(type,
|
|
v4l2_type_names_FIXME));
|
|
|
|
switch (type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
if (vfd->vidioc_g_fmt_cap)
|
|
ret=vfd->vidioc_g_fmt_cap(file, fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt(vfd,&f->fmt.pix);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (vfd->vidioc_g_fmt_overlay)
|
|
ret=vfd->vidioc_g_fmt_overlay(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
if (vfd->vidioc_g_fmt_vbi)
|
|
ret=vfd->vidioc_g_fmt_vbi(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
if (vfd->vidioc_g_fmt_vbi_output)
|
|
ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
if (vfd->vidioc_g_fmt_vbi_capture)
|
|
ret=vfd->vidioc_g_fmt_vbi_capture(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (vfd->vidioc_g_fmt_video_output)
|
|
ret=vfd->vidioc_g_fmt_video_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
if (vfd->vidioc_g_fmt_vbi_output)
|
|
ret=vfd->vidioc_g_fmt_vbi_output(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (vfd->vidioc_g_fmt_type_private)
|
|
ret=vfd->vidioc_g_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
struct v4l2_format *f = (struct v4l2_format *)arg;
|
|
|
|
/* FIXME: Should be one dump per type */
|
|
dbgarg (cmd, "type=%s\n", prt_names(f->type,
|
|
v4l2_type_names_FIXME));
|
|
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
v4l_print_pix_fmt(vfd,&f->fmt.pix);
|
|
if (vfd->vidioc_s_fmt_cap)
|
|
ret=vfd->vidioc_s_fmt_cap(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (vfd->vidioc_s_fmt_overlay)
|
|
ret=vfd->vidioc_s_fmt_overlay(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
if (vfd->vidioc_s_fmt_vbi)
|
|
ret=vfd->vidioc_s_fmt_vbi(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
if (vfd->vidioc_s_fmt_vbi_output)
|
|
ret=vfd->vidioc_s_fmt_vbi_output(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
if (vfd->vidioc_s_fmt_vbi_capture)
|
|
ret=vfd->vidioc_s_fmt_vbi_capture(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (vfd->vidioc_s_fmt_video_output)
|
|
ret=vfd->vidioc_s_fmt_video_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
if (vfd->vidioc_s_fmt_vbi_output)
|
|
ret=vfd->vidioc_s_fmt_vbi_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (vfd->vidioc_s_fmt_type_private)
|
|
ret=vfd->vidioc_s_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_TRY_FMT:
|
|
{
|
|
struct v4l2_format *f = (struct v4l2_format *)arg;
|
|
|
|
/* FIXME: Should be one dump per type */
|
|
dbgarg (cmd, "type=%s\n", prt_names(f->type,
|
|
v4l2_type_names_FIXME));
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
if (vfd->vidioc_try_fmt_cap)
|
|
ret=vfd->vidioc_try_fmt_cap(file, fh, f);
|
|
if (!ret)
|
|
v4l_print_pix_fmt(vfd,&f->fmt.pix);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY:
|
|
if (vfd->vidioc_try_fmt_overlay)
|
|
ret=vfd->vidioc_try_fmt_overlay(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE:
|
|
if (vfd->vidioc_try_fmt_vbi)
|
|
ret=vfd->vidioc_try_fmt_vbi(file, fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT:
|
|
if (vfd->vidioc_try_fmt_vbi_output)
|
|
ret=vfd->vidioc_try_fmt_vbi_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE:
|
|
if (vfd->vidioc_try_fmt_vbi_capture)
|
|
ret=vfd->vidioc_try_fmt_vbi_capture(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
|
if (vfd->vidioc_try_fmt_video_output)
|
|
ret=vfd->vidioc_try_fmt_video_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_VBI_OUTPUT:
|
|
if (vfd->vidioc_try_fmt_vbi_output)
|
|
ret=vfd->vidioc_try_fmt_vbi_output(file,
|
|
fh, f);
|
|
break;
|
|
case V4L2_BUF_TYPE_PRIVATE:
|
|
if (vfd->vidioc_try_fmt_type_private)
|
|
ret=vfd->vidioc_try_fmt_type_private(file,
|
|
fh, f);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
/* FIXME: Those buf reqs could be handled here,
|
|
with some changes on videobuf to allow its header to be included at
|
|
videodev2.h or being merged at videodev2.
|
|
*/
|
|
case VIDIOC_REQBUFS:
|
|
{
|
|
struct v4l2_requestbuffers *p=arg;
|
|
|
|
if (!vfd->vidioc_reqbufs)
|
|
break;
|
|
ret = check_fmt (vfd, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret=vfd->vidioc_reqbufs(file, fh, p);
|
|
dbgarg (cmd, "count=%d, type=%s, memory=%s\n",
|
|
p->count,
|
|
prt_names(p->type,v4l2_type_names_FIXME),
|
|
prt_names(p->memory,v4l2_memory_names));
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYBUF:
|
|
{
|
|
struct v4l2_buffer *p=arg;
|
|
|
|
if (!vfd->vidioc_querybuf)
|
|
break;
|
|
ret = check_fmt (vfd, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret=vfd->vidioc_querybuf(file, fh, p);
|
|
if (!ret)
|
|
dbgbuf(cmd,vfd,p);
|
|
break;
|
|
}
|
|
case VIDIOC_QBUF:
|
|
{
|
|
struct v4l2_buffer *p=arg;
|
|
|
|
if (!vfd->vidioc_qbuf)
|
|
break;
|
|
ret = check_fmt (vfd, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret=vfd->vidioc_qbuf(file, fh, p);
|
|
if (!ret)
|
|
dbgbuf(cmd,vfd,p);
|
|
break;
|
|
}
|
|
case VIDIOC_DQBUF:
|
|
{
|
|
struct v4l2_buffer *p=arg;
|
|
if (!vfd->vidioc_qbuf)
|
|
break;
|
|
ret = check_fmt (vfd, p->type);
|
|
if (ret)
|
|
break;
|
|
|
|
ret=vfd->vidioc_qbuf(file, fh, p);
|
|
if (!ret)
|
|
dbgbuf(cmd,vfd,p);
|
|
break;
|
|
}
|
|
case VIDIOC_OVERLAY:
|
|
{
|
|
int *i = arg;
|
|
|
|
if (!vfd->vidioc_overlay)
|
|
break;
|
|
dbgarg (cmd, "value=%d\n",*i);
|
|
ret=vfd->vidioc_overlay(file, fh, *i);
|
|
break;
|
|
}
|
|
#ifdef CONFIG_VIDEO_V4L1_COMPAT
|
|
/* --- streaming capture ------------------------------------- */
|
|
case VIDIOCGMBUF:
|
|
{
|
|
struct video_mbuf *p=arg;
|
|
|
|
memset(p,0,sizeof(p));
|
|
|
|
if (!vfd->vidiocgmbuf)
|
|
break;
|
|
ret=vfd->vidiocgmbuf(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "size=%d, frames=%d, offsets=0x%08lx\n",
|
|
p->size, p->frames,
|
|
(unsigned long)p->offsets);
|
|
break;
|
|
}
|
|
#endif
|
|
case VIDIOC_G_FBUF:
|
|
{
|
|
struct v4l2_framebuffer *p=arg;
|
|
if (!vfd->vidioc_g_fbuf)
|
|
break;
|
|
ret=vfd->vidioc_g_fbuf(file, fh, arg);
|
|
if (!ret) {
|
|
dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
|
|
p->capability,p->flags,
|
|
(unsigned long)p->base);
|
|
v4l_print_pix_fmt (vfd, &p->fmt);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_S_FBUF:
|
|
{
|
|
struct v4l2_framebuffer *p=arg;
|
|
if (!vfd->vidioc_s_fbuf)
|
|
break;
|
|
|
|
dbgarg (cmd, "capability=%d, flags=%d, base=0x%08lx\n",
|
|
p->capability,p->flags,(unsigned long)p->base);
|
|
v4l_print_pix_fmt (vfd, &p->fmt);
|
|
ret=vfd->vidioc_s_fbuf(file, fh, arg);
|
|
|
|
break;
|
|
}
|
|
case VIDIOC_STREAMON:
|
|
{
|
|
enum v4l2_buf_type i = *(int *)arg;
|
|
if (!vfd->vidioc_streamon)
|
|
break;
|
|
dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
|
|
ret=vfd->vidioc_streamon(file, fh,i);
|
|
break;
|
|
}
|
|
case VIDIOC_STREAMOFF:
|
|
{
|
|
enum v4l2_buf_type i = *(int *)arg;
|
|
|
|
if (!vfd->vidioc_streamoff)
|
|
break;
|
|
dbgarg (cmd, "type=%s\n", prt_names(i,v4l2_type_names_FIXME));
|
|
ret=vfd->vidioc_streamoff(file, fh, i);
|
|
break;
|
|
}
|
|
/* ---------- tv norms ---------- */
|
|
case VIDIOC_ENUMSTD:
|
|
{
|
|
struct v4l2_standard *p = arg;
|
|
unsigned int index = p->index;
|
|
|
|
if (!vfd->tvnormsize) {
|
|
printk (KERN_WARNING "%s: no TV norms defined!\n",
|
|
vfd->name);
|
|
break;
|
|
}
|
|
|
|
if (index<=0 || index >= vfd->tvnormsize) {
|
|
ret=-EINVAL;
|
|
break;
|
|
}
|
|
v4l2_video_std_construct(p, vfd->tvnorms[p->index].id,
|
|
vfd->tvnorms[p->index].name);
|
|
p->index = index;
|
|
|
|
dbgarg (cmd, "index=%d, id=%Ld, name=%s, fps=%d/%d, "
|
|
"framelines=%d\n", p->index,
|
|
(unsigned long long)p->id, p->name,
|
|
p->frameperiod.numerator,
|
|
p->frameperiod.denominator,
|
|
p->framelines);
|
|
|
|
ret=0;
|
|
break;
|
|
}
|
|
case VIDIOC_G_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
|
|
*id = vfd->current_norm;
|
|
|
|
dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
|
|
|
|
ret=0;
|
|
break;
|
|
}
|
|
case VIDIOC_S_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
unsigned int i;
|
|
|
|
if (!vfd->tvnormsize) {
|
|
printk (KERN_WARNING "%s: no TV norms defined!\n",
|
|
vfd->name);
|
|
break;
|
|
}
|
|
|
|
dbgarg (cmd, "value=%Lu\n", (long long unsigned) *id);
|
|
|
|
/* First search for exact match */
|
|
for (i = 0; i < vfd->tvnormsize; i++)
|
|
if (*id == vfd->tvnorms[i].id)
|
|
break;
|
|
/* Then for a generic video std that contains desired std */
|
|
if (i == vfd->tvnormsize)
|
|
for (i = 0; i < vfd->tvnormsize; i++)
|
|
if (*id & vfd->tvnorms[i].id)
|
|
break;
|
|
if (i == vfd->tvnormsize) {
|
|
break;
|
|
}
|
|
|
|
/* Calls the specific handler */
|
|
if (vfd->vidioc_s_std)
|
|
ret=vfd->vidioc_s_std(file, fh, i);
|
|
else
|
|
ret=-EINVAL;
|
|
|
|
/* Updates standard information */
|
|
if (!ret)
|
|
vfd->current_norm=*id;
|
|
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYSTD:
|
|
{
|
|
v4l2_std_id *p=arg;
|
|
|
|
if (!vfd->vidioc_querystd)
|
|
break;
|
|
ret=vfd->vidioc_querystd(file, fh, arg);
|
|
if (!ret)
|
|
dbgarg (cmd, "detected std=%Lu\n",
|
|
(unsigned long long)*p);
|
|
break;
|
|
}
|
|
/* ------ input switching ---------- */
|
|
/* FIXME: Inputs can be handled inside videodev2 */
|
|
case VIDIOC_ENUMINPUT:
|
|
{
|
|
struct v4l2_input *p=arg;
|
|
int i=p->index;
|
|
|
|
if (!vfd->vidioc_enum_input)
|
|
break;
|
|
memset(p, 0, sizeof(*p));
|
|
p->index=i;
|
|
|
|
ret=vfd->vidioc_enum_input(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "index=%d, name=%s, type=%d, "
|
|
"audioset=%d, "
|
|
"tuner=%d, std=%Ld, status=%d\n",
|
|
p->index,p->name,p->type,p->audioset,
|
|
p->tuner,
|
|
(unsigned long long)p->std,
|
|
p->status);
|
|
break;
|
|
}
|
|
case VIDIOC_G_INPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
if (!vfd->vidioc_g_input)
|
|
break;
|
|
ret=vfd->vidioc_g_input(file, fh, i);
|
|
if (!ret)
|
|
dbgarg (cmd, "value=%d\n",*i);
|
|
break;
|
|
}
|
|
case VIDIOC_S_INPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
if (!vfd->vidioc_s_input)
|
|
break;
|
|
dbgarg (cmd, "value=%d\n",*i);
|
|
ret=vfd->vidioc_s_input(file, fh, *i);
|
|
break;
|
|
}
|
|
|
|
/* ------ output switching ---------- */
|
|
case VIDIOC_G_OUTPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
if (!vfd->vidioc_g_output)
|
|
break;
|
|
ret=vfd->vidioc_g_output(file, fh, i);
|
|
if (!ret)
|
|
dbgarg (cmd, "value=%d\n",*i);
|
|
break;
|
|
}
|
|
case VIDIOC_S_OUTPUT:
|
|
{
|
|
unsigned int *i = arg;
|
|
|
|
if (!vfd->vidioc_s_output)
|
|
break;
|
|
dbgarg (cmd, "value=%d\n",*i);
|
|
ret=vfd->vidioc_s_output(file, fh, *i);
|
|
break;
|
|
}
|
|
|
|
/* --- controls ---------------------------------------------- */
|
|
case VIDIOC_QUERYCTRL:
|
|
{
|
|
struct v4l2_queryctrl *p=arg;
|
|
|
|
if (!vfd->vidioc_queryctrl)
|
|
break;
|
|
ret=vfd->vidioc_queryctrl(file, fh, p);
|
|
|
|
if (!ret)
|
|
dbgarg (cmd, "id=%d, type=%d, name=%s, "
|
|
"min/max=%d/%d,"
|
|
" step=%d, default=%d, flags=0x%08x\n",
|
|
p->id,p->type,p->name,p->minimum,
|
|
p->maximum,p->step,p->default_value,
|
|
p->flags);
|
|
break;
|
|
}
|
|
case VIDIOC_G_CTRL:
|
|
{
|
|
struct v4l2_control *p = arg;
|
|
|
|
if (!vfd->vidioc_g_ctrl)
|
|
break;
|
|
dbgarg(cmd, "Enum for index=%d\n", p->id);
|
|
|
|
ret=vfd->vidioc_g_ctrl(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2 ( "id=%d, value=%d\n", p->id, p->value);
|
|
break;
|
|
}
|
|
case VIDIOC_S_CTRL:
|
|
{
|
|
struct v4l2_control *p = arg;
|
|
|
|
if (!vfd->vidioc_s_ctrl)
|
|
break;
|
|
dbgarg (cmd, "id=%d, value=%d\n", p->id, p->value);
|
|
|
|
ret=vfd->vidioc_s_ctrl(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_EXT_CTRLS:
|
|
{
|
|
struct v4l2_ext_controls *p = arg;
|
|
|
|
if (vfd->vidioc_g_ext_ctrls) {
|
|
dbgarg(cmd, "count=%d\n", p->count);
|
|
|
|
ret=vfd->vidioc_g_ext_ctrls(file, fh, p);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_S_EXT_CTRLS:
|
|
{
|
|
struct v4l2_ext_controls *p = arg;
|
|
|
|
if (vfd->vidioc_s_ext_ctrls) {
|
|
dbgarg(cmd, "count=%d\n", p->count);
|
|
|
|
ret=vfd->vidioc_s_ext_ctrls(file, fh, p);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_TRY_EXT_CTRLS:
|
|
{
|
|
struct v4l2_ext_controls *p = arg;
|
|
|
|
if (vfd->vidioc_try_ext_ctrls) {
|
|
dbgarg(cmd, "count=%d\n", p->count);
|
|
|
|
ret=vfd->vidioc_try_ext_ctrls(file, fh, p);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_QUERYMENU:
|
|
{
|
|
struct v4l2_querymenu *p=arg;
|
|
if (!vfd->vidioc_querymenu)
|
|
break;
|
|
ret=vfd->vidioc_querymenu(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "id=%d, index=%d, name=%s\n",
|
|
p->id,p->index,p->name);
|
|
break;
|
|
}
|
|
/* --- audio ---------------------------------------------- */
|
|
case VIDIOC_ENUMAUDIO:
|
|
{
|
|
struct v4l2_audio *p=arg;
|
|
|
|
if (!vfd->vidioc_enumaudio)
|
|
break;
|
|
dbgarg(cmd, "Enum for index=%d\n", p->index);
|
|
ret=vfd->vidioc_enumaudio(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n",p->index,p->name,
|
|
p->capability, p->mode);
|
|
break;
|
|
}
|
|
case VIDIOC_G_AUDIO:
|
|
{
|
|
struct v4l2_audio *p=arg;
|
|
|
|
if (!vfd->vidioc_g_audio)
|
|
break;
|
|
dbgarg(cmd, "Get for index=%d\n", p->index);
|
|
ret=vfd->vidioc_g_audio(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n",p->index,
|
|
p->name,p->capability, p->mode);
|
|
break;
|
|
}
|
|
case VIDIOC_S_AUDIO:
|
|
{
|
|
struct v4l2_audio *p=arg;
|
|
|
|
if (!vfd->vidioc_s_audio)
|
|
break;
|
|
dbgarg(cmd, "index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability, p->mode);
|
|
ret=vfd->vidioc_s_audio(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_ENUMAUDOUT:
|
|
{
|
|
struct v4l2_audioout *p=arg;
|
|
|
|
if (!vfd->vidioc_enumaudout)
|
|
break;
|
|
dbgarg(cmd, "Enum for index=%d\n", p->index);
|
|
ret=vfd->vidioc_enumaudout(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability,p->mode);
|
|
break;
|
|
}
|
|
case VIDIOC_G_AUDOUT:
|
|
{
|
|
struct v4l2_audioout *p=arg;
|
|
|
|
if (!vfd->vidioc_g_audout)
|
|
break;
|
|
dbgarg(cmd, "Enum for index=%d\n", p->index);
|
|
ret=vfd->vidioc_g_audout(file, fh, p);
|
|
if (!ret)
|
|
dbgarg2("index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability,p->mode);
|
|
break;
|
|
}
|
|
case VIDIOC_S_AUDOUT:
|
|
{
|
|
struct v4l2_audioout *p=arg;
|
|
|
|
if (!vfd->vidioc_s_audout)
|
|
break;
|
|
dbgarg(cmd, "index=%d, name=%s, capability=%d, "
|
|
"mode=%d\n", p->index, p->name,
|
|
p->capability,p->mode);
|
|
|
|
ret=vfd->vidioc_s_audout(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_MODULATOR:
|
|
{
|
|
struct v4l2_modulator *p=arg;
|
|
if (!vfd->vidioc_g_modulator)
|
|
break;
|
|
ret=vfd->vidioc_g_modulator(file, fh, p);
|
|
if (!ret)
|
|
dbgarg(cmd, "index=%d, name=%s, "
|
|
"capability=%d, rangelow=%d,"
|
|
" rangehigh=%d, txsubchans=%d\n",
|
|
p->index, p->name,p->capability,
|
|
p->rangelow, p->rangehigh,
|
|
p->txsubchans);
|
|
break;
|
|
}
|
|
case VIDIOC_S_MODULATOR:
|
|
{
|
|
struct v4l2_modulator *p=arg;
|
|
if (!vfd->vidioc_s_modulator)
|
|
break;
|
|
dbgarg(cmd, "index=%d, name=%s, capability=%d, "
|
|
"rangelow=%d, rangehigh=%d, txsubchans=%d\n",
|
|
p->index, p->name,p->capability,p->rangelow,
|
|
p->rangehigh,p->txsubchans);
|
|
ret=vfd->vidioc_s_modulator(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_CROP:
|
|
{
|
|
struct v4l2_crop *p=arg;
|
|
if (!vfd->vidioc_g_crop)
|
|
break;
|
|
ret=vfd->vidioc_g_crop(file, fh, p);
|
|
if (!ret) {
|
|
dbgarg(cmd, "type=%d\n", p->type);
|
|
dbgrect(vfd, "", &p->c);
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOC_S_CROP:
|
|
{
|
|
struct v4l2_crop *p=arg;
|
|
if (!vfd->vidioc_s_crop)
|
|
break;
|
|
dbgarg(cmd, "type=%d\n", p->type);
|
|
dbgrect(vfd, "", &p->c);
|
|
ret=vfd->vidioc_s_crop(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_CROPCAP:
|
|
{
|
|
struct v4l2_cropcap *p=arg;
|
|
/*FIXME: Should also show v4l2_fract pixelaspect */
|
|
if (!vfd->vidioc_cropcap)
|
|
break;
|
|
dbgarg(cmd, "type=%d\n", p->type);
|
|
dbgrect(vfd, "bounds ", &p->bounds);
|
|
dbgrect(vfd, "defrect ", &p->defrect);
|
|
ret=vfd->vidioc_cropcap(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_MPEGCOMP:
|
|
{
|
|
struct v4l2_mpeg_compression *p=arg;
|
|
|
|
/*FIXME: Several fields not shown */
|
|
if (!vfd->vidioc_g_mpegcomp)
|
|
break;
|
|
ret=vfd->vidioc_g_mpegcomp(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d,"
|
|
" ts_pid_video=%d, ts_pid_pcr=%d, "
|
|
"ps_size=%d, au_sample_rate=%d, "
|
|
"au_pesid=%c, vi_frame_rate=%d, "
|
|
"vi_frames_per_gop=%d, "
|
|
"vi_bframes_count=%d, vi_pesid=%c\n",
|
|
p->ts_pid_pmt,p->ts_pid_audio,
|
|
p->ts_pid_video,p->ts_pid_pcr,
|
|
p->ps_size, p->au_sample_rate,
|
|
p->au_pesid, p->vi_frame_rate,
|
|
p->vi_frames_per_gop,
|
|
p->vi_bframes_count, p->vi_pesid);
|
|
break;
|
|
}
|
|
case VIDIOC_S_MPEGCOMP:
|
|
{
|
|
struct v4l2_mpeg_compression *p=arg;
|
|
/*FIXME: Several fields not shown */
|
|
if (!vfd->vidioc_s_mpegcomp)
|
|
break;
|
|
dbgarg (cmd, "ts_pid_pmt=%d, ts_pid_audio=%d, "
|
|
"ts_pid_video=%d, ts_pid_pcr=%d, ps_size=%d, "
|
|
"au_sample_rate=%d, au_pesid=%c, "
|
|
"vi_frame_rate=%d, vi_frames_per_gop=%d, "
|
|
"vi_bframes_count=%d, vi_pesid=%c\n",
|
|
p->ts_pid_pmt,p->ts_pid_audio, p->ts_pid_video,
|
|
p->ts_pid_pcr, p->ps_size, p->au_sample_rate,
|
|
p->au_pesid, p->vi_frame_rate,
|
|
p->vi_frames_per_gop, p->vi_bframes_count,
|
|
p->vi_pesid);
|
|
ret=vfd->vidioc_s_mpegcomp(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_JPEGCOMP:
|
|
{
|
|
struct v4l2_jpegcompression *p=arg;
|
|
if (!vfd->vidioc_g_jpegcomp)
|
|
break;
|
|
ret=vfd->vidioc_g_jpegcomp(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "quality=%d, APPn=%d, "
|
|
"APP_len=%d, COM_len=%d, "
|
|
"jpeg_markers=%d\n",
|
|
p->quality,p->APPn,p->APP_len,
|
|
p->COM_len,p->jpeg_markers);
|
|
break;
|
|
}
|
|
case VIDIOC_S_JPEGCOMP:
|
|
{
|
|
struct v4l2_jpegcompression *p=arg;
|
|
if (!vfd->vidioc_g_jpegcomp)
|
|
break;
|
|
dbgarg (cmd, "quality=%d, APPn=%d, APP_len=%d, "
|
|
"COM_len=%d, jpeg_markers=%d\n",
|
|
p->quality,p->APPn,p->APP_len,
|
|
p->COM_len,p->jpeg_markers);
|
|
ret=vfd->vidioc_s_jpegcomp(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_PARM:
|
|
{
|
|
struct v4l2_streamparm *p=arg;
|
|
if (!vfd->vidioc_g_parm)
|
|
break;
|
|
ret=vfd->vidioc_g_parm(file, fh, p);
|
|
dbgarg (cmd, "type=%d\n", p->type);
|
|
break;
|
|
}
|
|
case VIDIOC_S_PARM:
|
|
{
|
|
struct v4l2_streamparm *p=arg;
|
|
if (!vfd->vidioc_s_parm)
|
|
break;
|
|
dbgarg (cmd, "type=%d\n", p->type);
|
|
ret=vfd->vidioc_s_parm(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_TUNER:
|
|
{
|
|
struct v4l2_tuner *p=arg;
|
|
if (!vfd->vidioc_g_tuner)
|
|
break;
|
|
ret=vfd->vidioc_g_tuner(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "index=%d, name=%s, type=%d, "
|
|
"capability=%d, rangelow=%d, "
|
|
"rangehigh=%d, signal=%d, afc=%d, "
|
|
"rxsubchans=%d, audmode=%d\n",
|
|
p->index, p->name, p->type,
|
|
p->capability, p->rangelow,
|
|
p->rangehigh, p->rxsubchans,
|
|
p->audmode, p->signal, p->afc);
|
|
break;
|
|
}
|
|
case VIDIOC_S_TUNER:
|
|
{
|
|
struct v4l2_tuner *p=arg;
|
|
if (!vfd->vidioc_s_tuner)
|
|
break;
|
|
dbgarg (cmd, "index=%d, name=%s, type=%d, "
|
|
"capability=%d, rangelow=%d, rangehigh=%d, "
|
|
"signal=%d, afc=%d, rxsubchans=%d, "
|
|
"audmode=%d\n",p->index, p->name, p->type,
|
|
p->capability, p->rangelow,p->rangehigh,
|
|
p->rxsubchans, p->audmode, p->signal,
|
|
p->afc);
|
|
ret=vfd->vidioc_s_tuner(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_FREQUENCY:
|
|
{
|
|
struct v4l2_frequency *p=arg;
|
|
if (!vfd->vidioc_g_frequency)
|
|
break;
|
|
ret=vfd->vidioc_g_frequency(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
|
|
p->tuner,p->type,p->frequency);
|
|
break;
|
|
}
|
|
case VIDIOC_S_FREQUENCY:
|
|
{
|
|
struct v4l2_frequency *p=arg;
|
|
if (!vfd->vidioc_s_frequency)
|
|
break;
|
|
dbgarg (cmd, "tuner=%d, type=%d, frequency=%d\n",
|
|
p->tuner,p->type,p->frequency);
|
|
ret=vfd->vidioc_s_frequency(file, fh, p);
|
|
break;
|
|
}
|
|
case VIDIOC_G_SLICED_VBI_CAP:
|
|
{
|
|
struct v4l2_sliced_vbi_cap *p=arg;
|
|
if (!vfd->vidioc_g_sliced_vbi_cap)
|
|
break;
|
|
ret=vfd->vidioc_g_sliced_vbi_cap(file, fh, p);
|
|
if (!ret)
|
|
dbgarg (cmd, "service_set=%d\n", p->service_set);
|
|
break;
|
|
}
|
|
case VIDIOC_LOG_STATUS:
|
|
{
|
|
if (!vfd->vidioc_log_status)
|
|
break;
|
|
ret=vfd->vidioc_log_status(file, fh);
|
|
break;
|
|
}
|
|
|
|
/* --- Others --------------------------------------------- */
|
|
|
|
default:
|
|
ret=v4l_compat_translate_ioctl(inode,file,cmd,arg,__video_do_ioctl);
|
|
}
|
|
|
|
if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) {
|
|
if (ret<0) {
|
|
printk ("%s: err:\n", vfd->name);
|
|
v4l_print_ioctl(vfd->name, cmd);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int video_ioctl2 (struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
char sbuf[128];
|
|
void *mbuf = NULL;
|
|
void *parg = NULL;
|
|
int err = -EINVAL;
|
|
int is_ext_ctrl;
|
|
size_t ctrls_size = 0;
|
|
void __user *user_ptr = NULL;
|
|
|
|
#ifdef __OLD_VIDIOC_
|
|
cmd = video_fix_command(cmd);
|
|
#endif
|
|
is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS ||
|
|
cmd == VIDIOC_TRY_EXT_CTRLS);
|
|
|
|
/* Copy arguments into temp kernel buffer */
|
|
switch (_IOC_DIR(cmd)) {
|
|
case _IOC_NONE:
|
|
parg = NULL;
|
|
break;
|
|
case _IOC_READ:
|
|
case _IOC_WRITE:
|
|
case (_IOC_WRITE | _IOC_READ):
|
|
if (_IOC_SIZE(cmd) <= sizeof(sbuf)) {
|
|
parg = sbuf;
|
|
} else {
|
|
/* too big to allocate from stack */
|
|
mbuf = kmalloc(_IOC_SIZE(cmd),GFP_KERNEL);
|
|
if (NULL == mbuf)
|
|
return -ENOMEM;
|
|
parg = mbuf;
|
|
}
|
|
|
|
err = -EFAULT;
|
|
if (_IOC_DIR(cmd) & _IOC_WRITE)
|
|
if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd)))
|
|
goto out;
|
|
break;
|
|
}
|
|
|
|
if (is_ext_ctrl) {
|
|
struct v4l2_ext_controls *p = parg;
|
|
|
|
/* In case of an error, tell the caller that it wasn't
|
|
a specific control that caused it. */
|
|
p->error_idx = p->count;
|
|
user_ptr = (void __user *)p->controls;
|
|
if (p->count) {
|
|
ctrls_size = sizeof(struct v4l2_ext_control) * p->count;
|
|
/* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */
|
|
mbuf = kmalloc(ctrls_size, GFP_KERNEL);
|
|
err = -ENOMEM;
|
|
if (NULL == mbuf)
|
|
goto out_ext_ctrl;
|
|
err = -EFAULT;
|
|
if (copy_from_user(mbuf, user_ptr, ctrls_size))
|
|
goto out_ext_ctrl;
|
|
p->controls = mbuf;
|
|
}
|
|
}
|
|
|
|
/* Handles IOCTL */
|
|
err = __video_do_ioctl(inode, file, cmd, parg);
|
|
if (err == -ENOIOCTLCMD)
|
|
err = -EINVAL;
|
|
if (is_ext_ctrl) {
|
|
struct v4l2_ext_controls *p = parg;
|
|
|
|
p->controls = (void *)user_ptr;
|
|
if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size))
|
|
err = -EFAULT;
|
|
goto out_ext_ctrl;
|
|
}
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
out_ext_ctrl:
|
|
/* Copy results into user buffer */
|
|
switch (_IOC_DIR(cmd))
|
|
{
|
|
case _IOC_READ:
|
|
case (_IOC_WRITE | _IOC_READ):
|
|
if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd)))
|
|
err = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
out:
|
|
kfree(mbuf);
|
|
return err;
|
|
}
|
|
|
|
|
|
static struct file_operations video_fops;
|
|
|
|
/**
|
|
* video_register_device - register video4linux devices
|
|
* @vfd: video device structure we want to register
|
|
* @type: type of device to register
|
|
* @nr: which device number (0 == /dev/video0, 1 == /dev/video1, ...
|
|
* -1 == first free)
|
|
*
|
|
* The registration code assigns minor numbers based on the type
|
|
* requested. -ENFILE is returned in all the device slots for this
|
|
* category are full. If not then the minor field is set and the
|
|
* driver initialize function is called (if non %NULL).
|
|
*
|
|
* Zero is returned on success.
|
|
*
|
|
* Valid types are
|
|
*
|
|
* %VFL_TYPE_GRABBER - A frame grabber
|
|
*
|
|
* %VFL_TYPE_VTX - A teletext device
|
|
*
|
|
* %VFL_TYPE_VBI - Vertical blank data (undecoded)
|
|
*
|
|
* %VFL_TYPE_RADIO - A radio card
|
|
*/
|
|
|
|
int video_register_device(struct video_device *vfd, int type, int nr)
|
|
{
|
|
int i=0;
|
|
int base;
|
|
int end;
|
|
int ret;
|
|
char *name_base;
|
|
|
|
switch(type)
|
|
{
|
|
case VFL_TYPE_GRABBER:
|
|
base=MINOR_VFL_TYPE_GRABBER_MIN;
|
|
end=MINOR_VFL_TYPE_GRABBER_MAX+1;
|
|
name_base = "video";
|
|
break;
|
|
case VFL_TYPE_VTX:
|
|
base=MINOR_VFL_TYPE_VTX_MIN;
|
|
end=MINOR_VFL_TYPE_VTX_MAX+1;
|
|
name_base = "vtx";
|
|
break;
|
|
case VFL_TYPE_VBI:
|
|
base=MINOR_VFL_TYPE_VBI_MIN;
|
|
end=MINOR_VFL_TYPE_VBI_MAX+1;
|
|
name_base = "vbi";
|
|
break;
|
|
case VFL_TYPE_RADIO:
|
|
base=MINOR_VFL_TYPE_RADIO_MIN;
|
|
end=MINOR_VFL_TYPE_RADIO_MAX+1;
|
|
name_base = "radio";
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "%s called with unknown type: %d\n",
|
|
__FUNCTION__, type);
|
|
return -1;
|
|
}
|
|
|
|
/* pick a minor number */
|
|
mutex_lock(&videodev_lock);
|
|
if (nr >= 0 && nr < end-base) {
|
|
/* use the one the driver asked for */
|
|
i = base+nr;
|
|
if (NULL != video_device[i]) {
|
|
mutex_unlock(&videodev_lock);
|
|
return -ENFILE;
|
|
}
|
|
} else {
|
|
/* use first free */
|
|
for(i=base;i<end;i++)
|
|
if (NULL == video_device[i])
|
|
break;
|
|
if (i == end) {
|
|
mutex_unlock(&videodev_lock);
|
|
return -ENFILE;
|
|
}
|
|
}
|
|
video_device[i]=vfd;
|
|
vfd->minor=i;
|
|
mutex_unlock(&videodev_lock);
|
|
mutex_init(&vfd->lock);
|
|
|
|
/* sysfs class */
|
|
memset(&vfd->class_dev, 0x00, sizeof(vfd->class_dev));
|
|
if (vfd->dev)
|
|
vfd->class_dev.dev = vfd->dev;
|
|
vfd->class_dev.class = &video_class;
|
|
vfd->class_dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor);
|
|
sprintf(vfd->class_dev.class_id, "%s%d", name_base, i - base);
|
|
ret = class_device_register(&vfd->class_dev);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "%s: class_device_register failed\n",
|
|
__FUNCTION__);
|
|
goto fail_minor;
|
|
}
|
|
ret = class_device_create_file(&vfd->class_dev, &class_device_attr_name);
|
|
if (ret < 0) {
|
|
printk(KERN_ERR "%s: class_device_create_file 'name' failed\n",
|
|
__FUNCTION__);
|
|
goto fail_classdev;
|
|
}
|
|
|
|
#if 1
|
|
/* needed until all drivers are fixed */
|
|
if (!vfd->release)
|
|
printk(KERN_WARNING "videodev: \"%s\" has no release callback. "
|
|
"Please fix your driver for proper sysfs support, see "
|
|
"http://lwn.net/Articles/36850/\n", vfd->name);
|
|
#endif
|
|
return 0;
|
|
|
|
fail_classdev:
|
|
class_device_unregister(&vfd->class_dev);
|
|
fail_minor:
|
|
mutex_lock(&videodev_lock);
|
|
video_device[vfd->minor] = NULL;
|
|
vfd->minor = -1;
|
|
mutex_unlock(&videodev_lock);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* video_unregister_device - unregister a video4linux device
|
|
* @vfd: the device to unregister
|
|
*
|
|
* This unregisters the passed device and deassigns the minor
|
|
* number. Future open calls will be met with errors.
|
|
*/
|
|
|
|
void video_unregister_device(struct video_device *vfd)
|
|
{
|
|
mutex_lock(&videodev_lock);
|
|
if(video_device[vfd->minor]!=vfd)
|
|
panic("videodev: bad unregister");
|
|
|
|
video_device[vfd->minor]=NULL;
|
|
class_device_unregister(&vfd->class_dev);
|
|
mutex_unlock(&videodev_lock);
|
|
}
|
|
|
|
/*
|
|
* Video fs operations
|
|
*/
|
|
static struct file_operations video_fops=
|
|
{
|
|
.owner = THIS_MODULE,
|
|
.llseek = no_llseek,
|
|
.open = video_open,
|
|
};
|
|
|
|
/*
|
|
* Initialise video for linux
|
|
*/
|
|
|
|
static int __init videodev_init(void)
|
|
{
|
|
int ret;
|
|
|
|
printk(KERN_INFO "Linux video capture interface: v2.00\n");
|
|
if (register_chrdev(VIDEO_MAJOR, VIDEO_NAME, &video_fops)) {
|
|
printk(KERN_WARNING "video_dev: unable to get major %d\n", VIDEO_MAJOR);
|
|
return -EIO;
|
|
}
|
|
|
|
ret = class_register(&video_class);
|
|
if (ret < 0) {
|
|
unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
|
|
printk(KERN_WARNING "video_dev: class_register failed\n");
|
|
return -EIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit videodev_exit(void)
|
|
{
|
|
class_unregister(&video_class);
|
|
unregister_chrdev(VIDEO_MAJOR, VIDEO_NAME);
|
|
}
|
|
|
|
module_init(videodev_init)
|
|
module_exit(videodev_exit)
|
|
|
|
EXPORT_SYMBOL(video_register_device);
|
|
EXPORT_SYMBOL(video_unregister_device);
|
|
EXPORT_SYMBOL(video_devdata);
|
|
EXPORT_SYMBOL(video_usercopy);
|
|
EXPORT_SYMBOL(video_exclusive_open);
|
|
EXPORT_SYMBOL(video_exclusive_release);
|
|
EXPORT_SYMBOL(video_ioctl2);
|
|
EXPORT_SYMBOL(video_device_alloc);
|
|
EXPORT_SYMBOL(video_device_release);
|
|
|
|
MODULE_AUTHOR("Alan Cox, Mauro Carvalho Chehab <mchehab@infradead.org>");
|
|
MODULE_DESCRIPTION("Device registrar for Video4Linux drivers v2");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|