This patch adds a small helper module. It can translate v4l ioctls
into the new v4l2 ones. v4l2 device drivers can use that module to
provide the old v4l API for backward compatibility.
Gerd
--- linux-2.5.45/drivers/media/video/Makefile 2002-10-31 14:19:51.000000000 +0100
+++ linux/drivers/media/video/Makefile 2002-10-31 14:20:27.000000000 +0100
@@ -5,14 +5,14 @@
# All of the (potential) objects that export symbols.
# This list comes from 'grep -l EXPORT_SYMBOL *.[hc]'.
-export-objs := videodev.o v4l2-common.o \
+export-objs := videodev.o v4l2-common.o v4l1-compat.o \
bttv-if.o cpia.o video-buf.o
bttv-objs := bttv-driver.o bttv-cards.o bttv-if.o \
bttv-risc.o bttv-vbi.o
zoran-objs := zr36120.o zr36120_i2c.o zr36120_mem.o
-obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-common.o
+obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-common.o v4l1-compat.o
obj-$(CONFIG_VIDEO_BT848) += bttv.o msp3400.o tvaudio.o \
tda7432.o tda9875.o tuner.o video-buf.o
--- linux-2.5.45/drivers/media/video/v4l1-compat.c 2002-10-31 14:20:27.000000000 +0100
+++ linux/drivers/media/video/v4l1-compat.c 2002-10-31 14:20:27.000000000 +0100
@@ -0,0 +1,1010 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef __KERNEL__
+#define __KERNEL__
+#endif
+
+#include <linux/config.h>
+
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.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_PARM(debug,"i");
+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 ((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 int
+palette_to_pixelformat(int palette)
+{
+ if (palette < sizeof(palette2pixelformat)/sizeof(int))
+ return palette2pixelformat[palette];
+ else
+ return 0;
+}
+
+static 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;
+}
+
+/* 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)
+{
+ 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;
+ }
+out:
+ kfree(bits);
+out_nofds:
+ return ret;
+}
+
+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)
+{
+ int err = -ENOIOCTLCMD;
+
+ switch (cmd)
+ {
+ case VIDIOCGCAP: /* capability */
+ {
+ struct video_capability *cap = arg;
+ struct v4l2_capability cap2;
+ struct v4l2_framebuffer fbuf2;
+
+ 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;
+ struct v4l2_framebuffer fbuf2;
+
+ 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;
+ struct v4l2_framebuffer fbuf2;
+
+ 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;
+ struct v4l2_format fmt2;
+
+ 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;
+ struct v4l2_format fmt2;
+
+ memset(&fmt2,0,sizeof(fmt2));
+ fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ err = drv(inode, file, VIDIOC_G_FMT, &fmt2);
+ if (err < 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 (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)
+ dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n",err);
+ break;
+ }
+ case VIDIOCCAPTURE: /* turn on/off preview */
+ {
+ 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;
+ struct v4l2_input input2;
+ v4l2_std_id sid;
+
+ 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;
+
+ err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
+ if (err < 0)
+ dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %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);
+ 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);
+
+ 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;
+#endif
+ pict->palette = pixelformat_to_palette(
+ 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);
+ 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);
+
+ 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;
+ struct v4l2_tuner tun2;
+ v4l2_std_id sid;
+
+ 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;
+
+ 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;
+ }
+#if 0 /* FIXME */
+ case VIDIOCSTUNER: /* select a tuner input */
+ {
+ int i;
+
+ err = drv(inode, file, VIDIOC_S_INPUT, &i);
+ if (err < 0)
+ dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n",err);
+ break;
+ }
+#endif
+ case VIDIOCGFREQ: /* get frequency */
+ {
+ int *freq = arg;
+ struct v4l2_frequency freq2;
+
+ 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 */
+ {
+ int *freq = arg;
+ struct v4l2_frequency freq2;
+
+ 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;
+ 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) {
+ 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;
+ v = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
+ if (v >= 0)
+ {
+ aud->volume = v;
+ aud->flags |= VIDEO_AUDIO_VOLUME;
+ }
+ v = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
+ if (v >= 0)
+ {
+ aud->bass = v;
+ aud->flags |= VIDEO_AUDIO_BASS;
+ }
+ v = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
+ if (v >= 0)
+ {
+ aud->treble = v;
+ aud->flags |= VIDEO_AUDIO_TREBLE;
+ }
+ v = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
+ if (v >= 0)
+ {
+ aud->balance = v;
+ aud->flags |= VIDEO_AUDIO_BALANCE;
+ }
+ v = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
+ if (v >= 0)
+ {
+ if (v)
+ 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;
+ 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;
+ struct v4l2_audio aud2;
+ struct v4l2_tuner tun2;
+
+ 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;
+ }
+#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;
+ }
+#endif
+ case VIDIOCMCAPTURE: /* capture a frame */
+ {
+ struct video_mmap *mm = arg;
+ struct v4l2_buffer buf2;
+ struct v4l2_format fmt2;
+
+ 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;
+ 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, &buf2.type);
+ if (err < 0)
+ dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n",err);
+ break;
+ }
+ case VIDIOCSYNC: /* wait for a frame */
+ {
+ int *i = arg;
+ struct v4l2_buffer buf2;
+
+ 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;
+ }
+
+ /* 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 = simple_select(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 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");
+ break;
+ }
+ return err;
+}
+
+EXPORT_SYMBOL(v4l_compat_translate_ioctl);
+
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
--- linux-2.5.45/kernel/ksyms.c 2002-10-31 14:02:25.000000000 +0100
+++ linux/kernel/ksyms.c 2002-10-31 14:20:27.000000000 +0100
@@ -325,6 +325,7 @@
EXPORT_SYMBOL(deactivate_super);
EXPORT_SYMBOL(sget);
EXPORT_SYMBOL(set_anon_super);
+EXPORT_SYMBOL(do_select);
/* for stackable file systems (lofs, wrapfs, cryptfs, etc.) */
EXPORT_SYMBOL(default_llseek);
-- You can't please everybody. And usually if you _try_ to please everybody, the end result is one big mess. -- Linus Torvalds, 2002-04-20 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/