leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity
b7f355d23c
linux/drivers/media/video/v4l1-compat.c
Michael H. Schimek 67f1570a06 V4L/DVB (3178): bttv VBI fixes 
- V4L2_(G|S|TRY)_FMT returned incorrect VBI start lines for PAL-M,
NTSC-JP, and PAL-60. They also returned an inaccurate VBI offset.
- V4L2_(G|S)_FMT and V4L2_TRY_FMT disagreed about the start of VBI
capturing in PAL and SECAM second field. Note the start line fixes
may break applications using VIDIOCSVBIFMT because this ioctl fails
when the driver does not support exactly the requested parameters.
- V4L2_TRY_FMT did not clear the reserved field in struct
v4l2_vbi_format.
- V4L2_(S|TRY)_FMT did not expect very large or small VBI start or
count values, returning wrong (but safe) counts due to an overflow.
- VIDIOCGVBIFMT confused V4L and V4L2 VBI flags. However this had no
effect because the flags have the same value and bttv never sets
them.
- In v4l_compat_translate_ioctl() the VIDIOC(G|S)VBIFMT code did not
expect V4L2 drivers supporting VBI formats besides V4L2_PIX_FMT_GREY.

Signed-off-by: Michael H. Schimek <mschimek@gmx.at>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
2006-01-09 15:25:27 -02:00

1030 lines
27 KiB
C
Raw Blame History

/*
*
* Video for Linux Two
* Backward Compatibility Layer
*
* Support subroutines for providing V4L2 drivers with backward
* compatibility with applications using the old API.
*
* 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 (at your option) any later version.
*
* Author: Bill Dirks <bdirks@pacbell.net>
* et al.
*
*/
#include <linux/config.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/file.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/videodev.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
static unsigned int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"enable debug messages");
MODULE_AUTHOR("Bill Dirks");
MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
MODULE_LICENSE("GPL");
#define dprintk(fmt, arg...) if (debug) \
printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg)
/*
* I O C T L T R A N S L A T I O N
*
* From here on down is the code for translating the numerous
* ioctl commands from the old API to the new API.
*/
static int
get_v4l_control(struct inode *inode,
struct file *file,
int cid,
v4l2_kioctl drv)
{
struct v4l2_queryctrl qctrl2;
struct v4l2_control ctrl2;
int err;
qctrl2.id = cid;
err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
if (err < 0)
dprintk("VIDIOC_QUERYCTRL: %d\n",err);
if (err == 0 &&
!(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
{
ctrl2.id = qctrl2.id;
err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
if (err < 0) {
dprintk("VIDIOC_G_CTRL: %d\n",err);
return 0;
}
return ((ctrl2.value - qctrl2.minimum) * 65535
+ (qctrl2.maximum - qctrl2.minimum) / 2)
/ (qctrl2.maximum - qctrl2.minimum);
}
return 0;
}
static int
set_v4l_control(struct inode *inode,
struct file *file,
int cid,
int value,
v4l2_kioctl drv)
{
struct v4l2_queryctrl qctrl2;
struct v4l2_control ctrl2;
int err;
qctrl2.id = cid;
err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
if (err < 0)
dprintk("VIDIOC_QUERYCTRL: %d\n",err);
if (err == 0 &&
!(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
!(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED))
{
if (value < 0)
value = 0;
if (value > 65535)
value = 65535;
if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
value = 65535;
ctrl2.id = qctrl2.id;
ctrl2.value =
(value * (qctrl2.maximum - qctrl2.minimum)
+ 32767)
/ 65535;
ctrl2.value += qctrl2.minimum;
err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
if (err < 0)
dprintk("VIDIOC_S_CTRL: %d\n",err);
}
return 0;
}
/* ----------------------------------------------------------------- */
static int palette2pixelformat[] = {
[VIDEO_PALETTE_GREY] = V4L2_PIX_FMT_GREY,
[VIDEO_PALETTE_RGB555] = V4L2_PIX_FMT_RGB555,
[VIDEO_PALETTE_RGB565] = V4L2_PIX_FMT_RGB565,
[VIDEO_PALETTE_RGB24] = V4L2_PIX_FMT_BGR24,
[VIDEO_PALETTE_RGB32] = V4L2_PIX_FMT_BGR32,
/* yuv packed pixel */
[VIDEO_PALETTE_YUYV] = V4L2_PIX_FMT_YUYV,
[VIDEO_PALETTE_YUV422] = V4L2_PIX_FMT_YUYV,
[VIDEO_PALETTE_UYVY] = V4L2_PIX_FMT_UYVY,
/* yuv planar */
[VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
[VIDEO_PALETTE_YUV420] = V4L2_PIX_FMT_YUV420,
[VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
[VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
[VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
};
static unsigned int
palette_to_pixelformat(unsigned int palette)
{
if (palette < ARRAY_SIZE(palette2pixelformat))
return palette2pixelformat[palette];
else
return 0;
}
static unsigned int
pixelformat_to_palette(int pixelformat)
{
int palette = 0;
switch (pixelformat)
{
case V4L2_PIX_FMT_GREY:
palette = VIDEO_PALETTE_GREY;
break;
case V4L2_PIX_FMT_RGB555:
palette = VIDEO_PALETTE_RGB555;
break;
case V4L2_PIX_FMT_RGB565:
palette = VIDEO_PALETTE_RGB565;
break;
case V4L2_PIX_FMT_BGR24:
palette = VIDEO_PALETTE_RGB24;
break;
case V4L2_PIX_FMT_BGR32:
palette = VIDEO_PALETTE_RGB32;
break;
/* yuv packed pixel */
case V4L2_PIX_FMT_YUYV:
palette = VIDEO_PALETTE_YUYV;
break;
case V4L2_PIX_FMT_UYVY:
palette = VIDEO_PALETTE_UYVY;
break;
/* yuv planar */
case V4L2_PIX_FMT_YUV410:
palette = VIDEO_PALETTE_YUV420;
break;
case V4L2_PIX_FMT_YUV420:
palette = VIDEO_PALETTE_YUV420;
break;
case V4L2_PIX_FMT_YUV411P:
palette = VIDEO_PALETTE_YUV411P;
break;
case V4L2_PIX_FMT_YUV422P:
palette = VIDEO_PALETTE_YUV422P;
break;
}
return palette;
}
/* ----------------------------------------------------------------- */
static int poll_one(struct file *file)
{
int retval = 1;
poll_table *table;
struct poll_wqueues pwq;
poll_initwait(&pwq);
table = &pwq.pt;
for (;;) {
int mask;
set_current_state(TASK_INTERRUPTIBLE);
mask = file->f_op->poll(file, table);
if (mask & POLLIN)
break;
table = NULL;
if (signal_pending(current)) {
retval = -ERESTARTSYS;
break;
}
schedule();
}
set_current_state(TASK_RUNNING);
poll_freewait(&pwq);
return retval;
}
static int count_inputs(struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
struct v4l2_input input2;
int i;
for (i = 0;; i++) {
memset(&input2,0,sizeof(input2));
input2.index = i;
if (0 != drv(inode,file,VIDIOC_ENUMINPUT, &input2))
break;
}
return i;
}
static int check_size(struct inode *inode,
struct file *file,
v4l2_kioctl drv,
int *maxw, int *maxh)
{
struct v4l2_fmtdesc desc2;
struct v4l2_format fmt2;
memset(&desc2,0,sizeof(desc2));
memset(&fmt2,0,sizeof(fmt2));
desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (0 != drv(inode,file,VIDIOC_ENUM_FMT, &desc2))
goto done;
fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt2.fmt.pix.width = 10000;
fmt2.fmt.pix.height = 10000;
fmt2.fmt.pix.pixelformat = desc2.pixelformat;
if (0 != drv(inode,file,VIDIOC_TRY_FMT, &fmt2))
goto done;
*maxw = fmt2.fmt.pix.width;
*maxh = fmt2.fmt.pix.height;
done:
return 0;
}
/* ----------------------------------------------------------------- */
/*
* This function is exported.
*/
int
v4l_compat_translate_ioctl(struct inode *inode,
struct file *file,
int cmd,
void *arg,
v4l2_kioctl drv)
{
struct v4l2_capability *cap2 = NULL;
struct v4l2_format *fmt2 = NULL;
enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
struct v4l2_framebuffer fbuf2;
struct v4l2_input input2;
struct v4l2_tuner tun2;
struct v4l2_standard std2;
struct v4l2_frequency freq2;
struct v4l2_audio aud2;
struct v4l2_queryctrl qctrl2;
struct v4l2_buffer buf2;
v4l2_std_id sid;
int i, err = 0;
switch (cmd) {
case VIDIOCGCAP: /* capability */
{
struct video_capability *cap = arg;
cap2 = kmalloc(sizeof(*cap2),GFP_KERNEL);
memset(cap, 0, sizeof(*cap));
memset(cap2, 0, sizeof(*cap2));
memset(&fbuf2, 0, sizeof(fbuf2));
err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
if (err < 0) {
dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n",err);
break;
}
if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
if (err < 0) {
dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n",err);
memset(&fbuf2, 0, sizeof(fbuf2));
}
err = 0;
}
memcpy(cap->name, cap2->card,
min(sizeof(cap->name), sizeof(cap2->card)));
cap->name[sizeof(cap->name) - 1] = 0;
if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
cap->type |= VID_TYPE_CAPTURE;
if (cap2->capabilities & V4L2_CAP_TUNER)
cap->type |= VID_TYPE_TUNER;
if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
cap->type |= VID_TYPE_TELETEXT;
if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
cap->type |= VID_TYPE_OVERLAY;
if (fbuf2.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
cap->type |= VID_TYPE_CLIPPING;
cap->channels = count_inputs(inode,file,drv);
check_size(inode,file,drv,
&cap->maxwidth,&cap->maxheight);
cap->audios = 0; /* FIXME */
cap->minwidth = 48; /* FIXME */
cap->minheight = 32; /* FIXME */
break;
}
case VIDIOCGFBUF: /* get frame buffer */
{
struct video_buffer *buffer = arg;
err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
if (err < 0) {
dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n",err);
break;
}
buffer->base = fbuf2.base;
buffer->height = fbuf2.fmt.height;
buffer->width = fbuf2.fmt.width;
switch (fbuf2.fmt.pixelformat) {
case V4L2_PIX_FMT_RGB332:
buffer->depth = 8;
break;
case V4L2_PIX_FMT_RGB555:
buffer->depth = 15;
break;
case V4L2_PIX_FMT_RGB565:
buffer->depth = 16;
break;
case V4L2_PIX_FMT_BGR24:
buffer->depth = 24;
break;
case V4L2_PIX_FMT_BGR32:
buffer->depth = 32;
break;
default:
buffer->depth = 0;
}
if (0 != fbuf2.fmt.bytesperline)
buffer->bytesperline = fbuf2.fmt.bytesperline;
else {
buffer->bytesperline =
(buffer->width * buffer->depth + 7) & 7;
buffer->bytesperline >>= 3;
}
break;
}
case VIDIOCSFBUF: /* set frame buffer */
{
struct video_buffer *buffer = arg;
memset(&fbuf2, 0, sizeof(fbuf2));
fbuf2.base = buffer->base;
fbuf2.fmt.height = buffer->height;
fbuf2.fmt.width = buffer->width;
switch (buffer->depth) {
case 8:
fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
break;
case 15:
fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
break;
case 16:
fbuf2.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
break;
case 24:
fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
break;
case 32:
fbuf2.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
break;
}
fbuf2.fmt.bytesperline = buffer->bytesperline;
err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
if (err < 0)
dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n",err);
break;
}
case VIDIOCGWIN: /* get window or capture dimensions */
{
struct video_window *win = arg;
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(win,0,sizeof(*win));
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
err = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n",err);
if (err == 0) {
win->x = fmt2->fmt.win.w.left;
win->y = fmt2->fmt.win.w.top;
win->width = fmt2->fmt.win.w.width;
win->height = fmt2->fmt.win.w.height;
win->chromakey = fmt2->fmt.win.chromakey;
win->clips = NULL;
win->clipcount = 0;
break;
}
fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n",err);
break;
}
win->x = 0;
win->y = 0;
win->width = fmt2->fmt.pix.width;
win->height = fmt2->fmt.pix.height;
win->chromakey = 0;
win->clips = NULL;
win->clipcount = 0;
break;
}
case VIDIOCSWIN: /* set window and/or capture dimensions */
{
struct video_window *win = arg;
int err1,err2;
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
drv(inode, file, VIDIOC_STREAMOFF, &fmt2->type);
err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err1 < 0)
dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
if (err1 == 0) {
fmt2->fmt.pix.width = win->width;
fmt2->fmt.pix.height = win->height;
fmt2->fmt.pix.field = V4L2_FIELD_ANY;
fmt2->fmt.pix.bytesperline = 0;
err = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
err);
win->width = fmt2->fmt.pix.width;
win->height = fmt2->fmt.pix.height;
}
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
fmt2->fmt.win.w.left = win->x;
fmt2->fmt.win.w.top = win->y;
fmt2->fmt.win.w.width = win->width;
fmt2->fmt.win.w.height = win->height;
fmt2->fmt.win.chromakey = win->chromakey;
fmt2->fmt.win.clips = (void __user *)win->clips;
fmt2->fmt.win.clipcount = win->clipcount;
err2 = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err2 < 0)
dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
if (err1 != 0 && err2 != 0)
err = err1;
break;
}
case VIDIOCCAPTURE: /* turn on/off preview */
{
int *on = arg;
if (0 == *on) {
/* dirty hack time. But v4l1 has no STREAMOFF
* equivalent in the API, and this one at
* least comes close ... */
drv(inode, file, VIDIOC_STREAMOFF, &captype);
}
err = drv(inode, file, VIDIOC_OVERLAY, arg);
if (err < 0)
dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n",err);
break;
}
case VIDIOCGCHAN: /* get input information */
{
struct video_channel *chan = arg;
memset(&input2,0,sizeof(input2));
input2.index = chan->channel;
err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
if (err < 0) {
dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
"channel=%d err=%d\n",chan->channel,err);
break;
}
chan->channel = input2.index;
memcpy(chan->name, input2.name,
min(sizeof(chan->name), sizeof(input2.name)));
chan->name[sizeof(chan->name) - 1] = 0;
chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
switch (input2.type) {
case V4L2_INPUT_TYPE_TUNER:
chan->type = VIDEO_TYPE_TV;
break;
default:
case V4L2_INPUT_TYPE_CAMERA:
chan->type = VIDEO_TYPE_CAMERA;
break;
}
chan->norm = 0;
err = drv(inode, file, VIDIOC_G_STD, &sid);
if (err < 0)
dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n",err);
if (err == 0) {
if (sid & V4L2_STD_PAL)
chan->norm = VIDEO_MODE_PAL;
if (sid & V4L2_STD_NTSC)
chan->norm = VIDEO_MODE_NTSC;
if (sid & V4L2_STD_SECAM)
chan->norm = VIDEO_MODE_SECAM;
}
break;
}
case VIDIOCSCHAN: /* set input */
{
struct video_channel *chan = arg;
sid = 0;
err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
if (err < 0)
dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n",err);
switch (chan->norm) {
case VIDEO_MODE_PAL:
sid = V4L2_STD_PAL;
break;
case VIDEO_MODE_NTSC:
sid = V4L2_STD_NTSC;
break;
case VIDEO_MODE_SECAM:
sid = V4L2_STD_SECAM;
break;
}
if (0 != sid) {
err = drv(inode, file, VIDIOC_S_STD, &sid);
if (err < 0)
dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n",err);
}
break;
}
case VIDIOCGPICT: /* get tone controls & partial capture format */
{
struct video_picture *pict = arg;
pict->brightness = get_v4l_control(inode, file,
V4L2_CID_BRIGHTNESS,drv);
pict->hue = get_v4l_control(inode, file,
V4L2_CID_HUE, drv);
pict->contrast = get_v4l_control(inode, file,
V4L2_CID_CONTRAST, drv);
pict->colour = get_v4l_control(inode, file,
V4L2_CID_SATURATION, drv);
pict->whiteness = get_v4l_control(inode, file,
V4L2_CID_WHITENESS, drv);
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n",err);
break;
}
pict->palette = pixelformat_to_palette(
fmt2->fmt.pix.pixelformat);
break;
}
case VIDIOCSPICT: /* set tone controls & partial capture format */
{
struct video_picture *pict = arg;
set_v4l_control(inode, file,
V4L2_CID_BRIGHTNESS, pict->brightness, drv);
set_v4l_control(inode, file,
V4L2_CID_HUE, pict->hue, drv);
set_v4l_control(inode, file,
V4L2_CID_CONTRAST, pict->contrast, drv);
set_v4l_control(inode, file,
V4L2_CID_SATURATION, pict->colour, drv);
set_v4l_control(inode, file,
V4L2_CID_WHITENESS, pict->whiteness, drv);
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n",err);
if (fmt2->fmt.pix.pixelformat !=
palette_to_pixelformat(pict->palette)) {
fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
pict->palette);
err = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",err);
}
err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
if (err < 0)
dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n",err);
if (fbuf2.fmt.pixelformat !=
palette_to_pixelformat(pict->palette)) {
fbuf2.fmt.pixelformat = palette_to_pixelformat(
pict->palette);
err = drv(inode, file, VIDIOC_S_FBUF, &fbuf2);
if (err < 0)
dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",err);
err = 0; /* likely fails for non-root */
}
break;
}
case VIDIOCGTUNER: /* get tuner information */
{
struct video_tuner *tun = arg;
memset(&tun2,0,sizeof(tun2));
err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
if (err < 0) {
dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n",err);
break;
}
memcpy(tun->name, tun2.name,
min(sizeof(tun->name), sizeof(tun2.name)));
tun->name[sizeof(tun->name) - 1] = 0;
tun->rangelow = tun2.rangelow;
tun->rangehigh = tun2.rangehigh;
tun->flags = 0;
tun->mode = VIDEO_MODE_AUTO;
for (i = 0; i < 64; i++) {
memset(&std2,0,sizeof(std2));
std2.index = i;
if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
break;
if (std2.id & V4L2_STD_PAL)
tun->flags |= VIDEO_TUNER_PAL;
if (std2.id & V4L2_STD_NTSC)
tun->flags |= VIDEO_TUNER_NTSC;
if (std2.id & V4L2_STD_SECAM)
tun->flags |= VIDEO_TUNER_SECAM;
}
err = drv(inode, file, VIDIOC_G_STD, &sid);
if (err < 0)
dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n",err);
if (err == 0) {
if (sid & V4L2_STD_PAL)
tun->mode = VIDEO_MODE_PAL;
if (sid & V4L2_STD_NTSC)
tun->mode = VIDEO_MODE_NTSC;
if (sid & V4L2_STD_SECAM)
tun->mode = VIDEO_MODE_SECAM;
}
if (tun2.capability & V4L2_TUNER_CAP_LOW)
tun->flags |= VIDEO_TUNER_LOW;
if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
tun->flags |= VIDEO_TUNER_STEREO_ON;
tun->signal = tun2.signal;
break;
}
case VIDIOCSTUNER: /* select a tuner input */
{
err = 0;
break;
}
case VIDIOCGFREQ: /* get frequency */
{
unsigned long *freq = arg;
freq2.tuner = 0;
err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
if (err < 0)
dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n",err);
if (0 == err)
*freq = freq2.frequency;
break;
}
case VIDIOCSFREQ: /* set frequency */
{
unsigned long *freq = arg;
freq2.tuner = 0;
drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
freq2.frequency = *freq;
err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
if (err < 0)
dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n",err);
break;
}
case VIDIOCGAUDIO: /* get audio properties/controls */
{
struct video_audio *aud = arg;
err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
if (err < 0) {
dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n",err);
break;
}
memcpy(aud->name, aud2.name,
min(sizeof(aud->name), sizeof(aud2.name)));
aud->name[sizeof(aud->name) - 1] = 0;
aud->audio = aud2.index;
aud->flags = 0;
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
if (i >= 0) {
aud->volume = i;
aud->flags |= VIDEO_AUDIO_VOLUME;
}
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
if (i >= 0) {
aud->bass = i;
aud->flags |= VIDEO_AUDIO_BASS;
}
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
if (i >= 0) {
aud->treble = i;
aud->flags |= VIDEO_AUDIO_TREBLE;
}
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
if (i >= 0) {
aud->balance = i;
aud->flags |= VIDEO_AUDIO_BALANCE;
}
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
if (i >= 0) {
if (i)
aud->flags |= VIDEO_AUDIO_MUTE;
aud->flags |= VIDEO_AUDIO_MUTABLE;
}
aud->step = 1;
qctrl2.id = V4L2_CID_AUDIO_VOLUME;
if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
!(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
aud->step = qctrl2.step;
aud->mode = 0;
memset(&tun2,0,sizeof(tun2));
err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
if (err < 0) {
dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n",err);
err = 0;
break;
}
if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
aud->mode = VIDEO_SOUND_STEREO;
else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
aud->mode = VIDEO_SOUND_MONO;
break;
}
case VIDIOCSAUDIO: /* set audio controls */
{
struct video_audio *aud = arg;
memset(&aud2,0,sizeof(aud2));
memset(&tun2,0,sizeof(tun2));
aud2.index = aud->audio;
err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
if (err < 0) {
dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n",err);
break;
}
set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
aud->volume, drv);
set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
aud->bass, drv);
set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
aud->treble, drv);
set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
aud->balance, drv);
set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
!!(aud->flags & VIDEO_AUDIO_MUTE), drv);
err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
if (err < 0)
dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n",err);
if (err == 0) {
switch (aud->mode) {
default:
case VIDEO_SOUND_MONO:
case VIDEO_SOUND_LANG1:
tun2.audmode = V4L2_TUNER_MODE_MONO;
break;
case VIDEO_SOUND_STEREO:
tun2.audmode = V4L2_TUNER_MODE_STEREO;
break;
case VIDEO_SOUND_LANG2:
tun2.audmode = V4L2_TUNER_MODE_LANG2;
break;
}
err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
if (err < 0)
dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n",err);
}
err = 0;
break;
}
case VIDIOCMCAPTURE: /* capture a frame */
{
struct video_mmap *mm = arg;
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(&buf2,0,sizeof(buf2));
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n",err);
break;
}
if (mm->width != fmt2->fmt.pix.width ||
mm->height != fmt2->fmt.pix.height ||
palette_to_pixelformat(mm->format) !=
fmt2->fmt.pix.pixelformat)
{/* New capture format... */
fmt2->fmt.pix.width = mm->width;
fmt2->fmt.pix.height = mm->height;
fmt2->fmt.pix.pixelformat =
palette_to_pixelformat(mm->format);
fmt2->fmt.pix.field = V4L2_FIELD_ANY;
fmt2->fmt.pix.bytesperline = 0;
err = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
break;
}
}
buf2.index = mm->frame;
buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n",err);
break;
}
err = drv(inode, file, VIDIOC_QBUF, &buf2);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n",err);
break;
}
err = drv(inode, file, VIDIOC_STREAMON, &captype);
if (err < 0)
dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
break;
}
case VIDIOCSYNC: /* wait for a frame */
{
int *i = arg;
buf2.index = *i;
buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
if (err < 0) {
/* No such buffer */
dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
break;
}
if (!(buf2.flags & V4L2_BUF_FLAG_MAPPED)) {
/* Buffer is not mapped */
err = -EINVAL;
break;
}
/* make sure capture actually runs so we don't block forever */
err = drv(inode, file, VIDIOC_STREAMON, &captype);
if (err < 0) {
dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n",err);
break;
}
/* Loop as long as the buffer is queued, but not done */
while ((buf2.flags &
(V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
== V4L2_BUF_FLAG_QUEUED)
{
err = poll_one(file);
if (err < 0 || /* error or sleep was interrupted */
err == 0) /* timeout? Shouldn't occur. */
break;
err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
if (err < 0)
dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n",err);
}
if (!(buf2.flags & V4L2_BUF_FLAG_DONE)) /* not done */
break;
do {
err = drv(inode, file, VIDIOC_DQBUF, &buf2);
if (err < 0)
dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n",err);
} while (err == 0 && buf2.index != *i);
break;
}
case VIDIOCGVBIFMT: /* query VBI data capture format */
{
struct vbi_format *fmt = arg;
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(fmt2, 0, sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
break;
}
if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
err = -EINVAL;
break;
}
memset(fmt, 0, sizeof(*fmt));
fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
fmt->sampling_rate = fmt2->fmt.vbi.sampling_rate;
fmt->sample_format = VIDEO_PALETTE_RAW;
fmt->start[0] = fmt2->fmt.vbi.start[0];
fmt->count[0] = fmt2->fmt.vbi.count[0];
fmt->start[1] = fmt2->fmt.vbi.start[1];
fmt->count[1] = fmt2->fmt.vbi.count[1];
fmt->flags = fmt2->fmt.vbi.flags & 0x03;
break;
}
case VIDIOCSVBIFMT:
{
struct vbi_format *fmt = arg;
if (VIDEO_PALETTE_RAW != fmt->sample_format) {
err = -EINVAL;
break;
}
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(fmt2, 0, sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
fmt2->fmt.vbi.sampling_rate = fmt->sampling_rate;
fmt2->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
fmt2->fmt.vbi.start[0] = fmt->start[0];
fmt2->fmt.vbi.count[0] = fmt->count[0];
fmt2->fmt.vbi.start[1] = fmt->start[1];
fmt2->fmt.vbi.count[1] = fmt->count[1];
fmt2->fmt.vbi.flags = fmt->flags;
err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
break;
}
if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
fmt2->fmt.vbi.sampling_rate != fmt->sampling_rate ||
fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY ||
fmt2->fmt.vbi.start[0] != fmt->start[0] ||
fmt2->fmt.vbi.count[0] != fmt->count[0] ||
fmt2->fmt.vbi.start[1] != fmt->start[1] ||
fmt2->fmt.vbi.count[1] != fmt->count[1] ||
fmt2->fmt.vbi.flags != fmt->flags) {
err = -EINVAL;
break;
}
err = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
break;
}
default:
err = -ENOIOCTLCMD;
break;
}
kfree(cap2);
kfree(fmt2);
return err;
}
EXPORT_SYMBOL(v4l_compat_translate_ioctl);
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
Reference in New Issue View Git Blame Copy Permalink