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Commit d7ee0355 authored by Andrew Morton's avatar Andrew Morton Committed by Linus Torvalds
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[PATCH] v4l: #2 - v4l1-compat update 

From: Gerd Knorr <kraxel@bytesex.org>

This patch updates the v4l1-compat module.  Changes:

 * use f_op->poll() instead of do_select()

 * reduce stack usage of the v4l1_translate_ioctl() function.

 * misc minor fixes here and there.
parent 868bec44
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Inline Side-by-side
Showing with 260 additions and 244 deletions
drivers/media/video/v4l1-compat.c
View file @ d7ee0355
......@@ -127,6 +127,8 @@ set_v4l_control(struct inode *inode,
return 0;
}
/* ----------------------------------------------------------------- */
static int palette2pixelformat[] = {
[VIDEO_PALETTE_GREY] = V4L2_PIX_FMT_GREY,
[VIDEO_PALETTE_RGB555] = V4L2_PIX_FMT_RGB555,
......@@ -145,16 +147,16 @@ static int palette2pixelformat[] = {
[VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
};
static int
palette_to_pixelformat(int palette)
static unsigned int
palette_to_pixelformat(unsigned int palette)
{
if (palette < sizeof(palette2pixelformat)/sizeof(int))
if (palette < ARRAY_SIZE(palette2pixelformat))
return palette2pixelformat[palette];
else
return 0;
}
static int
static unsigned int
pixelformat_to_palette(int pixelformat)
{
int palette = 0;
......@@ -199,66 +201,43 @@ pixelformat_to_palette(int pixelformat)
return palette;
}
/* Do an 'in' (wait for input) select on a single file descriptor */
/* This stuff plaigarized from linux/fs/select.c */
#define __FD_IN(fds, n) (fds->in + n)
#define BIT(i) (1UL << ((i)&(__NFDBITS-1)))
#define SET(i,m) (*(m) |= (i))
extern int do_select(int n, fd_set_bits *fds, long *timeout);
/* ----------------------------------------------------------------- */
static int
simple_select(struct file *file)
static int poll_one(struct file *file)
{
fd_set_bits fds;
char *bits;
long timeout;
int i, fd, n, ret, size;
for (i = 0; i < current->files->max_fds; ++i)
if (file == current->files->fd[i])
break;
if (i == current->files->max_fds)
return -EINVAL;
fd = i;
n = fd + 1;
timeout = MAX_SCHEDULE_TIMEOUT;
/*
* We need 6 bitmaps (in/out/ex for both incoming and outgoing),
* since we used fdset we need to allocate memory in units of
* long-words.
*/
ret = -ENOMEM;
size = FDS_BYTES(n);
bits = kmalloc(6 * size, GFP_KERNEL);
if (!bits)
goto out_nofds;
fds.in = (unsigned long *) bits;
fds.out = (unsigned long *) (bits + size);
fds.ex = (unsigned long *) (bits + 2*size);
fds.res_in = (unsigned long *) (bits + 3*size);
fds.res_out = (unsigned long *) (bits + 4*size);
fds.res_ex = (unsigned long *) (bits + 5*size);
/* All zero except our one file descriptor bit, for input */
memset(bits, 0, 6 * size);
SET(BIT(fd), __FD_IN((&fds), fd / __NFDBITS));
ret = do_select(n, &fds, &timeout);
if (ret < 0)
goto out;
if (!ret) {
ret = -ERESTARTNOHAND;
if (signal_pending(current))
goto out;
ret = 0;
int retval = 1;
poll_table *table;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,48)
poll_table wait_table;
poll_initwait(&wait_table);
table = &wait_table;
#else
struct poll_wqueues pwq;
poll_initwait(&pwq);
table = &pwq.pt;
#endif
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();
}
out:
kfree(bits);
out_nofds:
return ret;
current->state = TASK_RUNNING;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,48)
poll_freewait(&wait_table);
#else
poll_freewait(&pwq);
#endif
return retval;
}
static int count_inputs(struct inode *inode,
......@@ -306,6 +285,7 @@ static int check_size(struct inode *inode,
return 0;
}
/* ----------------------------------------------------------------- */
/*
* This function is exported.
......@@ -317,26 +297,36 @@ v4l_compat_translate_ioctl(struct inode *inode,
void *arg,
v4l2_kioctl drv)
{
int err = -ENOIOCTLCMD;
struct v4l2_capability *cap2 = NULL;
struct v4l2_format *fmt2 = NULL;
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)
{
switch (cmd) {
case VIDIOCGCAP: /* capability */
{
struct video_capability *cap = arg;
struct v4l2_capability cap2;
struct v4l2_framebuffer fbuf2;
cap2 = kmalloc(sizeof(*cap2),GFP_KERNEL);
memset(cap, 0, sizeof(*cap));
memset(&cap2, 0, sizeof(cap2));
memset(cap2, 0, sizeof(*cap2));
memset(&fbuf2, 0, sizeof(fbuf2));
err = drv(inode, file, VIDIOC_QUERYCAP, &cap2);
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) {
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);
......@@ -345,16 +335,16 @@ v4l_compat_translate_ioctl(struct inode *inode,
err = 0;
}
memcpy(cap->name, cap2.card,
min(sizeof(cap->name), sizeof(cap2.card)));
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)
if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
cap->type |= VID_TYPE_CAPTURE;
if (cap2.capabilities & V4L2_CAP_TUNER)
if (cap2->capabilities & V4L2_CAP_TUNER)
cap->type |= VID_TYPE_TUNER;
if (cap2.capabilities & V4L2_CAP_VBI_CAPTURE)
if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
cap->type |= VID_TYPE_TELETEXT;
if (cap2.capabilities & V4L2_CAP_VIDEO_OVERLAY)
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;
......@@ -370,7 +360,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCGFBUF: /* get frame buffer */
{
struct video_buffer *buffer = arg;
struct v4l2_framebuffer fbuf2;
err = drv(inode, file, VIDIOC_G_FBUF, &fbuf2);
if (err < 0) {
......@@ -412,7 +401,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCSFBUF: /* set frame buffer */
{
struct video_buffer *buffer = arg;
struct v4l2_framebuffer fbuf2;
memset(&fbuf2, 0, sizeof(fbuf2));
fbuf2.base = buffer->base;
......@@ -444,36 +432,36 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCGWIN: /* get window or capture dimensions */
{
struct video_window *win = arg;
struct v4l2_format fmt2;
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(win,0,sizeof(*win));
memset(&fmt2,0,sizeof(fmt2));
memset(fmt2,0,sizeof(*fmt2));
fmt2.type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
err = drv(inode, file, VIDIOC_G_FMT, &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->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);
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->width = fmt2->fmt.pix.width;
win->height = fmt2->fmt.pix.height;
win->chromakey = 0;
win->clips = NULL;
win->clipcount = 0;
......@@ -482,37 +470,41 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCSWIN: /* set window and/or capture dimensions */
{
struct video_window *win = arg;
struct v4l2_format fmt2;
int err1,err2;
memset(&fmt2,0,sizeof(fmt2));
fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, &fmt2);
if (err < 0)
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(fmt2,0,sizeof(*fmt2));
fmt2->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err1 = drv(inode, file, VIDIOC_G_FMT, fmt2);
if (err1 < 0)
dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n",err);
if (err == 0) {
fmt2.fmt.pix.width = win->width;
fmt2.fmt.pix.height = win->height;
fmt2.fmt.pix.field = V4L2_FIELD_ANY;
err = drv(inode, file, VIDIOC_S_FMT, &fmt2);
if (err1 == 0) {
fmt2->fmt.pix.width = win->width;
fmt2->fmt.pix.height = win->height;
fmt2->fmt.pix.field = V4L2_FIELD_ANY;
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 *)win->clips;
fmt2.fmt.win.clipcount = win->clipcount;
err = drv(inode, file, VIDIOC_S_FMT, &fmt2);
if (err < 0)
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 *)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 */
......@@ -525,8 +517,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCGCHAN: /* get input information */
{
struct video_channel *chan = arg;
struct v4l2_input input2;
v4l2_std_id sid;
memset(&input2,0,sizeof(input2));
input2.index = chan->channel;
......@@ -568,16 +558,32 @@ v4l_compat_translate_ioctl(struct inode *inode,
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;
struct v4l2_format fmt2;
pict->brightness = get_v4l_control(inode, file,
V4L2_CID_BRIGHTNESS,drv);
......@@ -590,25 +596,24 @@ v4l_compat_translate_ioctl(struct inode *inode,
pict->whiteness = get_v4l_control(inode, file,
V4L2_CID_WHITENESS, drv);
memset(&fmt2,0,sizeof(fmt2));
fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, &fmt2);
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;
}
#if 0 /* FIXME */
pict->depth = fmt2.fmt.pix.depth;
pict->depth = fmt2->fmt.pix.depth;
#endif
pict->palette = pixelformat_to_palette(
fmt2.fmt.pix.pixelformat);
fmt2->fmt.pix.pixelformat);
break;
}
case VIDIOCSPICT: /* set tone controls & partial capture format */
{
struct video_picture *pict = arg;
struct v4l2_format fmt2;
struct v4l2_framebuffer fbuf2;
set_v4l_control(inode, file,
V4L2_CID_BRIGHTNESS, pict->brightness, drv);
......@@ -621,16 +626,17 @@ v4l_compat_translate_ioctl(struct inode *inode,
set_v4l_control(inode, file,
V4L2_CID_WHITENESS, pict->whiteness, drv);
memset(&fmt2,0,sizeof(fmt2));
fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, &fmt2);
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 !=
if (fmt2->fmt.pix.pixelformat !=
palette_to_pixelformat(pict->palette)) {
fmt2.fmt.pix.pixelformat = palette_to_pixelformat(
fmt2->fmt.pix.pixelformat = palette_to_pixelformat(
pict->palette);
err = drv(inode, file, VIDIOC_S_FMT, &fmt2);
err = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",err);
}
......@@ -652,8 +658,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCGTUNER: /* get tuner information */
{
struct video_tuner *tun = arg;
struct v4l2_tuner tun2;
v4l2_std_id sid;
memset(&tun2,0,sizeof(tun2));
err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
......@@ -669,6 +673,19 @@ v4l_compat_translate_ioctl(struct inode *inode,
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);
......@@ -688,21 +705,20 @@ v4l_compat_translate_ioctl(struct inode *inode,
tun->signal = tun2.signal;
break;
}
#if 0 /* FIXME */
case VIDIOCSTUNER: /* select a tuner input */
{
int i;
#if 0 /* FIXME */
err = drv(inode, file, VIDIOC_S_INPUT, &i);
if (err < 0)
dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err);
#else
err = 0;
#endif
break;
}
#endif
case VIDIOCGFREQ: /* get frequency */
{
int *freq = arg;
struct v4l2_frequency freq2;
err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
if (err < 0)
......@@ -714,7 +730,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCSFREQ: /* set frequency */
{
int *freq = arg;
struct v4l2_frequency freq2;
drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
freq2.frequency = *freq;
......@@ -726,10 +741,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCGAUDIO: /* get audio properties/controls */
{
struct video_audio *aud = arg;
struct v4l2_audio aud2;
struct v4l2_queryctrl qctrl2;
struct v4l2_tuner tun2;
int v;
err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
if (err < 0) {
......@@ -741,34 +752,29 @@ v4l_compat_translate_ioctl(struct inode *inode,
aud->name[sizeof(aud->name) - 1] = 0;
aud->audio = aud2.index;
aud->flags = 0;
v = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
if (v >= 0)
{
aud->volume = v;
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
if (i >= 0) {
aud->volume = i;
aud->flags |= VIDEO_AUDIO_VOLUME;
}
v = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
if (v >= 0)
{
aud->bass = v;
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
if (i >= 0) {
aud->bass = i;
aud->flags |= VIDEO_AUDIO_BASS;
}
v = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
if (v >= 0)
{
aud->treble = v;
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
if (i >= 0) {
aud->treble = i;
aud->flags |= VIDEO_AUDIO_TREBLE;
}
v = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
if (v >= 0)
{
aud->balance = v;
i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
if (i >= 0) {
aud->balance = i;
aud->flags |= VIDEO_AUDIO_BALANCE;
}
v = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
if (v >= 0)
{
if (v)
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;
}
......@@ -795,8 +801,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCSAUDIO: /* set audio controls */
{
struct video_audio *aud = arg;
struct v4l2_audio aud2;
struct v4l2_tuner tun2;
memset(&aud2,0,sizeof(aud2));
memset(&tun2,0,sizeof(tun2));
......@@ -844,83 +848,36 @@ v4l_compat_translate_ioctl(struct inode *inode,
break;
}
#if 0
case VIDIOCGMBUF: /* get mmap parameters */
{
struct video_mbuf *mbuf = arg;
struct v4l2_requestbuffers reqbuf2;
struct v4l2_buffer buf2;
struct v4l2_format fmt2, fmt2o;
struct v4l2_capability cap2;
int i;
/* Set the format to maximum dimensions */
if ((err = drv(inode, file, VIDIOC_QUERYCAP, &cap2)) < 0)
break;
fmt2o.type = V4L2_BUF_TYPE_CAPTURE;
if ((err = drv(inode, file, VIDIOC_G_FMT, &fmt2o)) < 0)
break;
fmt2 = fmt2o;
fmt2.fmt.pix.width = cap2.maxwidth;
fmt2.fmt.pix.height = cap2.maxheight;
fmt2.fmt.pix.flags |= V4L2_FMT_FLAG_INTERLACED;
if ((err = drv(inode, file, VIDIOC_S_FMT, &fmt2)) < 0)
break;
reqbuf2.count = 2; /* v4l always used two buffers */
reqbuf2.type = V4L2_BUF_TYPE_CAPTURE | V4L2_BUF_REQ_CONTIG;
err = drv(inode, file, VIDIOC_REQBUFS, &reqbuf2);
if (err < 0 || reqbuf2.count < 2 || reqbuf2.type
!= (V4L2_BUF_TYPE_CAPTURE | V4L2_BUF_REQ_CONTIG))
{/* Driver doesn't support v4l back-compatibility */
fmt2o.fmt.pix.flags |= V4L2_FMT_FLAG_INTERLACED;
drv(inode, file, VIDIOC_S_FMT, &fmt2o);
reqbuf2.count = 1;
reqbuf2.type = V4L2_BUF_TYPE_CAPTURE;
err = drv(inode, file, VIDIOC_REQBUFS, &reqbuf2);
if (err < 0)
{
err = -EINVAL;
break;
}
printk(KERN_INFO"V4L2: Device \"%s\" doesn't support"
" v4l memory mapping\n", vfl->name);
}
buf2.index = 0;
buf2.type = V4L2_BUF_TYPE_CAPTURE;
err = drv(inode, file, VIDIOC_QUERYBUF, &buf2);
mbuf->size = buf2.length * reqbuf2.count;
mbuf->frames = reqbuf2.count;
memset(mbuf->offsets, 0, sizeof(mbuf->offsets));
for (i = 0; i < mbuf->frames; ++i)
mbuf->offsets[i] = i * buf2.length;
break;
}
case VIDIOCGMBUF:
/* v4l2 drivers must implement that themself. The
mmap() differences can't be translated fully
transparent, thus there is no point to try that */
#endif
case VIDIOCMCAPTURE: /* capture a frame */
{
struct video_mmap *mm = arg;
struct v4l2_buffer buf2;
struct v4l2_format fmt2;
fmt2 = kmalloc(sizeof(*fmt2),GFP_KERNEL);
memset(&buf2,0,sizeof(buf2));
memset(&fmt2,0,sizeof(fmt2));
memset(fmt2,0,sizeof(*fmt2));
fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
err = drv(inode, file, VIDIOC_G_FMT, &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 ||
if (mm->width != fmt2->fmt.pix.width ||
mm->height != fmt2->fmt.pix.height ||
palette_to_pixelformat(mm->format) !=
fmt2.fmt.pix.pixelformat)
fmt2->fmt.pix.pixelformat)
{/* New capture format... */
fmt2.fmt.pix.width = mm->width;
fmt2.fmt.pix.height = mm->height;
fmt2.fmt.pix.pixelformat =
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;
err = drv(inode, file, VIDIOC_S_FMT, &fmt2);
fmt2->fmt.pix.field = V4L2_FIELD_ANY;
err = drv(inode, file, VIDIOC_S_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n",err);
break;
......@@ -946,7 +903,6 @@ v4l_compat_translate_ioctl(struct inode *inode,
case VIDIOCSYNC: /* wait for a frame */
{
int *i = arg;
struct v4l2_buffer buf2;
buf2.index = *i;
buf2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
......@@ -967,7 +923,7 @@ v4l_compat_translate_ioctl(struct inode *inode,
(V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
== V4L2_BUF_FLAG_QUEUED)
{
err = simple_select(file);
err = poll_one(file);
if (err < 0 || /* error or sleep was interrupted */
err == 0) /* timeout? Shouldn't occur. */
break;
......@@ -984,20 +940,80 @@ v4l_compat_translate_ioctl(struct inode *inode,
} while (err == 0 && buf2.index != *i);
break;
}
case VIDIOCGUNIT: /* get related device minors */
/* No translation */
break;
case VIDIOCGCAPTURE: /* */
/* No translation, yet... */
printk(KERN_INFO"v4l1-compat: VIDIOCGCAPTURE not implemented."
" Send patches to bdirks@pacbell.net :-)\n");
break;
case VIDIOCSCAPTURE: /* */
/* No translation, yet... */
printk(KERN_INFO"v4l1-compat: VIDIOCSCAPTURE not implemented."
" Send patches to bdirks@pacbell.net :-)\n");
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;
}
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;
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;
}
if (cap2)
kfree(cap2);
if (fmt2)
kfree(fmt2);
return err;
}
......
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