--- /dev/null
+/* Linux driver for Philips webcam
+ USB and Video4Linux interface part.
+ (C) 1999-2004 Nemosoft Unv.
+ (C) 2004-2006 Luc Saillard (luc@saillard.org)
+
+ NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
+ driver and thus may have bugs that are not present in the original version.
+ Please send bug reports and support requests to <luc@saillard.org>.
+ The decompression routines have been implemented by reverse-engineering the
+ Nemosoft binary pwcx module. Caveat emptor.
+
+ 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+*/
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <asm/io.h>
+
+#include "pwc.h"
+
+static struct v4l2_queryctrl pwc_controls[] = {
+ {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 128,
+ .step = 1,
+ .default_value = 64,
+ },
+ {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contrast",
+ .minimum = 0,
+ .maximum = 64,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_SATURATION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Saturation",
+ .minimum = -100,
+ .maximum = 100,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_GAMMA,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gamma",
+ .minimum = 0,
+ .maximum = 32,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_RED_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Red Gain",
+ .minimum = 0,
+ .maximum = 256,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_BLUE_BALANCE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Blue Gain",
+ .minimum = 0,
+ .maximum = 256,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_AUTO_WHITE_BALANCE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto White Balance",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_EXPOSURE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Shutter Speed (Exposure)",
+ .minimum = 0,
+ .maximum = 256,
+ .step = 1,
+ .default_value = 200,
+ },
+ {
+ .id = V4L2_CID_AUTOGAIN,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto Gain Enabled",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ },
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain Level",
+ .minimum = 0,
+ .maximum = 256,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_SAVE_USER,
+ .type = V4L2_CTRL_TYPE_BUTTON,
+ .name = "Save User Settings",
+ .minimum = 0,
+ .maximum = 0,
+ .step = 0,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_RESTORE_USER,
+ .type = V4L2_CTRL_TYPE_BUTTON,
+ .name = "Restore User Settings",
+ .minimum = 0,
+ .maximum = 0,
+ .step = 0,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_RESTORE_FACTORY,
+ .type = V4L2_CTRL_TYPE_BUTTON,
+ .name = "Restore Factory Settings",
+ .minimum = 0,
+ .maximum = 0,
+ .step = 0,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_COLOUR_MODE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Colour mode",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_AUTOCONTOUR,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Auto contour",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_CONTOUR,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contour",
+ .minimum = 0,
+ .maximum = 63,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_BACKLIGHT,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Backlight compensation",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_FLICKERLESS,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Flickerless",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+ {
+ .id = V4L2_CID_PRIVATE_NOISE_REDUCTION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Noise reduction",
+ .minimum = 0,
+ .maximum = 3,
+ .step = 1,
+ .default_value = 0,
+ },
+};
+
+
+static void pwc_vidioc_fill_fmt(const struct pwc_device *pdev, struct v4l2_format *f)
+{
+ memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
+ f->fmt.pix.width = pdev->view.x;
+ f->fmt.pix.height = pdev->view.y;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ if (pdev->vpalette == VIDEO_PALETTE_YUV420P) {
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
+ f->fmt.pix.bytesperline = (f->fmt.pix.width * 3)/2;
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ } else {
+ /* vbandlength contains 4 lines ... */
+ f->fmt.pix.bytesperline = pdev->vbandlength/4;
+ f->fmt.pix.sizeimage = pdev->frame_size + sizeof(struct pwc_raw_frame);
+ if (DEVICE_USE_CODEC1(pdev->type))
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_PWC1;
+ else
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_PWC2;
+ }
+ PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() "
+ "width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n",
+ f->fmt.pix.width,
+ f->fmt.pix.height,
+ f->fmt.pix.bytesperline,
+ f->fmt.pix.sizeimage,
+ (f->fmt.pix.pixelformat)&255,
+ (f->fmt.pix.pixelformat>>8)&255,
+ (f->fmt.pix.pixelformat>>16)&255,
+ (f->fmt.pix.pixelformat>>24)&255);
+}
+
+/* ioctl(VIDIOC_TRY_FMT) */
+static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f)
+{
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n");
+ return -EINVAL;
+ }
+
+ switch (f->fmt.pix.pixelformat) {
+ case V4L2_PIX_FMT_YUV420:
+ break;
+ case V4L2_PIX_FMT_PWC1:
+ if (DEVICE_USE_CODEC23(pdev->type)) {
+ PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n");
+ return -EINVAL;
+ }
+ break;
+ case V4L2_PIX_FMT_PWC2:
+ if (DEVICE_USE_CODEC1(pdev->type)) {
+ PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n");
+ return -EINVAL;
+ }
+ break;
+ default:
+ PWC_DEBUG_IOCTL("Unsupported pixel format\n");
+ return -EINVAL;
+
+ }
+
+ if (f->fmt.pix.width > pdev->view_max.x)
+ f->fmt.pix.width = pdev->view_max.x;
+ else if (f->fmt.pix.width < pdev->view_min.x)
+ f->fmt.pix.width = pdev->view_min.x;
+
+ if (f->fmt.pix.height > pdev->view_max.y)
+ f->fmt.pix.height = pdev->view_max.y;
+ else if (f->fmt.pix.height < pdev->view_min.y)
+ f->fmt.pix.height = pdev->view_min.y;
+
+ return 0;
+}
+
+/* ioctl(VIDIOC_SET_FMT) */
+static int pwc_vidioc_set_fmt(struct pwc_device *pdev, struct v4l2_format *f)
+{
+ int ret, fps, snapshot, compression, pixelformat;
+
+ ret = pwc_vidioc_try_fmt(pdev, f);
+ if (ret<0)
+ return ret;
+
+ pixelformat = f->fmt.pix.pixelformat;
+ compression = pdev->vcompression;
+ snapshot = 0;
+ fps = pdev->vframes;
+ if (f->fmt.pix.priv) {
+ compression = (f->fmt.pix.priv & PWC_QLT_MASK) >> PWC_QLT_SHIFT;
+ snapshot = !!(f->fmt.pix.priv & PWC_FPS_SNAPSHOT);
+ fps = (f->fmt.pix.priv & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT;
+ if (fps == 0)
+ fps = pdev->vframes;
+ }
+
+ if (pixelformat == V4L2_PIX_FMT_YUV420)
+ pdev->vpalette = VIDEO_PALETTE_YUV420P;
+ else
+ pdev->vpalette = VIDEO_PALETTE_RAW;
+
+ PWC_DEBUG_IOCTL("Try to change format to: width=%d height=%d fps=%d "
+ "compression=%d snapshot=%d format=%c%c%c%c\n",
+ f->fmt.pix.width, f->fmt.pix.height, fps,
+ compression, snapshot,
+ (pixelformat)&255,
+ (pixelformat>>8)&255,
+ (pixelformat>>16)&255,
+ (pixelformat>>24)&255);
+
+ ret = pwc_try_video_mode(pdev,
+ f->fmt.pix.width,
+ f->fmt.pix.height,
+ fps,
+ compression,
+ snapshot);
+
+ PWC_DEBUG_IOCTL("pwc_try_video_mode(), return=%d\n", ret);
+
+ if (ret)
+ return ret;
+
+ pwc_vidioc_fill_fmt(pdev, f);
+
+ return 0;
+
+}
+
+int pwc_video_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct pwc_device *pdev;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if (vdev == NULL)
+ return -EFAULT;
+ pdev = vdev->priv;
+ if (pdev == NULL)
+ return -EFAULT;
+
+#if CONFIG_PWC_DEBUG
+ if (PWC_DEBUG_LEVEL_IOCTL & pwc_trace)
+ v4l_printk_ioctl(cmd);
+#endif
+
+
+ switch (cmd) {
+ /* Query cabapilities */
+ case VIDIOCGCAP:
+ {
+ struct video_capability *caps = arg;
+
+ strcpy(caps->name, vdev->name);
+ caps->type = VID_TYPE_CAPTURE;
+ caps->channels = 1;
+ caps->audios = 1;
+ caps->minwidth = pdev->view_min.x;
+ caps->minheight = pdev->view_min.y;
+ caps->maxwidth = pdev->view_max.x;
+ caps->maxheight = pdev->view_max.y;
+ break;
+ }
+
+ /* Channel functions (simulate 1 channel) */
+ case VIDIOCGCHAN:
+ {
+ struct video_channel *v = arg;
+
+ if (v->channel != 0)
+ return -EINVAL;
+ v->flags = 0;
+ v->tuners = 0;
+ v->type = VIDEO_TYPE_CAMERA;
+ strcpy(v->name, "Webcam");
+ return 0;
+ }
+
+ case VIDIOCSCHAN:
+ {
+ /* The spec says the argument is an integer, but
+ the bttv driver uses a video_channel arg, which
+ makes sense becasue it also has the norm flag.
+ */
+ struct video_channel *v = arg;
+ if (v->channel != 0)
+ return -EINVAL;
+ return 0;
+ }
+
+
+ /* Picture functions; contrast etc. */
+ case VIDIOCGPICT:
+ {
+ struct video_picture *p = arg;
+ int val;
+
+ val = pwc_get_brightness(pdev);
+ if (val >= 0)
+ p->brightness = (val<<9);
+ else
+ p->brightness = 0xffff;
+ val = pwc_get_contrast(pdev);
+ if (val >= 0)
+ p->contrast = (val<<10);
+ else
+ p->contrast = 0xffff;
+ /* Gamma, Whiteness, what's the difference? :) */
+ val = pwc_get_gamma(pdev);
+ if (val >= 0)
+ p->whiteness = (val<<11);
+ else
+ p->whiteness = 0xffff;
+ if (pwc_get_saturation(pdev, &val)<0)
+ p->colour = 0xffff;
+ else
+ p->colour = 32768 + val * 327;
+ p->depth = 24;
+ p->palette = pdev->vpalette;
+ p->hue = 0xFFFF; /* N/A */
+ break;
+ }
+
+ case VIDIOCSPICT:
+ {
+ struct video_picture *p = arg;
+ /*
+ * FIXME: Suppose we are mid read
+ ANSWER: No problem: the firmware of the camera
+ can handle brightness/contrast/etc
+ changes at _any_ time, and the palette
+ is used exactly once in the uncompress
+ routine.
+ */
+ pwc_set_brightness(pdev, p->brightness);
+ pwc_set_contrast(pdev, p->contrast);
+ pwc_set_gamma(pdev, p->whiteness);
+ pwc_set_saturation(pdev, (p->colour-32768)/327);
+ if (p->palette && p->palette != pdev->vpalette) {
+ switch (p->palette) {
+ case VIDEO_PALETTE_YUV420P:
+ case VIDEO_PALETTE_RAW:
+ pdev->vpalette = p->palette;
+ return pwc_try_video_mode(pdev, pdev->image.x, pdev->image.y, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ }
+ break;
+ }
+
+ /* Window/size parameters */
+ case VIDIOCGWIN:
+ {
+ struct video_window *vw = arg;
+
+ vw->x = 0;
+ vw->y = 0;
+ vw->width = pdev->view.x;
+ vw->height = pdev->view.y;
+ vw->chromakey = 0;
+ vw->flags = (pdev->vframes << PWC_FPS_SHIFT) |
+ (pdev->vsnapshot ? PWC_FPS_SNAPSHOT : 0);
+ break;
+ }
+
+ case VIDIOCSWIN:
+ {
+ struct video_window *vw = arg;
+ int fps, snapshot, ret;
+
+ fps = (vw->flags & PWC_FPS_FRMASK) >> PWC_FPS_SHIFT;
+ snapshot = vw->flags & PWC_FPS_SNAPSHOT;
+ if (fps == 0)
+ fps = pdev->vframes;
+ if (pdev->view.x == vw->width && pdev->view.y && fps == pdev->vframes && snapshot == pdev->vsnapshot)
+ return 0;
+ ret = pwc_try_video_mode(pdev, vw->width, vw->height, fps, pdev->vcompression, snapshot);
+ if (ret)
+ return ret;
+ break;
+ }
+
+ /* We don't have overlay support (yet) */
+ case VIDIOCGFBUF:
+ {
+ struct video_buffer *vb = arg;
+
+ memset(vb,0,sizeof(*vb));
+ break;
+ }
+
+ /* mmap() functions */
+ case VIDIOCGMBUF:
+ {
+ /* Tell the user program how much memory is needed for a mmap() */
+ struct video_mbuf *vm = arg;
+ int i;
+
+ memset(vm, 0, sizeof(*vm));
+ vm->size = pwc_mbufs * pdev->len_per_image;
+ vm->frames = pwc_mbufs; /* double buffering should be enough for most applications */
+ for (i = 0; i < pwc_mbufs; i++)
+ vm->offsets[i] = i * pdev->len_per_image;
+ break;
+ }
+
+ case VIDIOCMCAPTURE:
+ {
+ /* Start capture into a given image buffer (called 'frame' in video_mmap structure) */
+ struct video_mmap *vm = arg;
+
+ PWC_DEBUG_READ("VIDIOCMCAPTURE: %dx%d, frame %d, format %d\n", vm->width, vm->height, vm->frame, vm->format);
+ if (vm->frame < 0 || vm->frame >= pwc_mbufs)
+ return -EINVAL;
+
+ /* xawtv is nasty. It probes the available palettes
+ by setting a very small image size and trying
+ various palettes... The driver doesn't support
+ such small images, so I'm working around it.
+ */
+ if (vm->format)
+ {
+ switch (vm->format)
+ {
+ case VIDEO_PALETTE_YUV420P:
+ case VIDEO_PALETTE_RAW:
+ break;
+ default:
+ return -EINVAL;
+ break;
+ }
+ }
+
+ if ((vm->width != pdev->view.x || vm->height != pdev->view.y) &&
+ (vm->width >= pdev->view_min.x && vm->height >= pdev->view_min.y)) {
+ int ret;
+
+ PWC_DEBUG_OPEN("VIDIOCMCAPTURE: changing size to please xawtv :-(.\n");
+ ret = pwc_try_video_mode(pdev, vm->width, vm->height, pdev->vframes, pdev->vcompression, pdev->vsnapshot);
+ if (ret)
+ return ret;
+ } /* ... size mismatch */
+
+ /* FIXME: should we lock here? */
+ if (pdev->image_used[vm->frame])
+ return -EBUSY; /* buffer wasn't available. Bummer */
+ pdev->image_used[vm->frame] = 1;
+
+ /* Okay, we're done here. In the SYNC call we wait until a
+ frame comes available, then expand image into the given
+ buffer.
+ In contrast to the CPiA cam the Philips cams deliver a
+ constant stream, almost like a grabber card. Also,
+ we have separate buffers for the rawdata and the image,
+ meaning we can nearly always expand into the requested buffer.
+ */
+ PWC_DEBUG_READ("VIDIOCMCAPTURE done.\n");
+ break;
+ }
+
+ case VIDIOCSYNC:
+ {
+ /* The doc says: "Whenever a buffer is used it should
+ call VIDIOCSYNC to free this frame up and continue."
+
+ The only odd thing about this whole procedure is
+ that MCAPTURE flags the buffer as "in use", and
+ SYNC immediately unmarks it, while it isn't
+ after SYNC that you know that the buffer actually
+ got filled! So you better not start a CAPTURE in
+ the same frame immediately (use double buffering).
+ This is not a problem for this cam, since it has
+ extra intermediate buffers, but a hardware
+ grabber card will then overwrite the buffer
+ you're working on.
+ */
+ int *mbuf = arg;
+ int ret;
+
+ PWC_DEBUG_READ("VIDIOCSYNC called (%d).\n", *mbuf);
+
+ /* bounds check */
+ if (*mbuf < 0 || *mbuf >= pwc_mbufs)
+ return -EINVAL;
+ /* check if this buffer was requested anyway */
+ if (pdev->image_used[*mbuf] == 0)
+ return -EINVAL;
+
+ /* Add ourselves to the frame wait-queue.
+
+ FIXME: needs auditing for safety.
+ QUESTION: In what respect? I think that using the
+ frameq is safe now.
+ */
+ add_wait_queue(&pdev->frameq, &wait);
+ while (pdev->full_frames == NULL) {
+ /* Check for unplugged/etc. here */
+ if (pdev->error_status) {
+ remove_wait_queue(&pdev->frameq, &wait);
+ set_current_state(TASK_RUNNING);
+ return -pdev->error_status;
+ }
+
+ if (signal_pending(current)) {
+ remove_wait_queue(&pdev->frameq, &wait);
+ set_current_state(TASK_RUNNING);
+ return -ERESTARTSYS;
+ }
+ schedule();
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ remove_wait_queue(&pdev->frameq, &wait);
+ set_current_state(TASK_RUNNING);
+
+ /* The frame is ready. Expand in the image buffer
+ requested by the user. I don't care if you
+ mmap() 5 buffers and request data in this order:
+ buffer 4 2 3 0 1 2 3 0 4 3 1 . . .
+ Grabber hardware may not be so forgiving.
+ */
+ PWC_DEBUG_READ("VIDIOCSYNC: frame ready.\n");
+ pdev->fill_image = *mbuf; /* tell in which buffer we want the image to be expanded */
+ /* Decompress, etc */
+ ret = pwc_handle_frame(pdev);
+ pdev->image_used[*mbuf] = 0;
+ if (ret)
+ return -EFAULT;
+ break;
+ }
+
+ case VIDIOCGAUDIO:
+ {
+ struct video_audio *v = arg;
+
+ strcpy(v->name, "Microphone");
+ v->audio = -1; /* unknown audio minor */
+ v->flags = 0;
+ v->mode = VIDEO_SOUND_MONO;
+ v->volume = 0;
+ v->bass = 0;
+ v->treble = 0;
+ v->balance = 0x8000;
+ v->step = 1;
+ break;
+ }
+
+ case VIDIOCSAUDIO:
+ {
+ /* Dummy: nothing can be set */
+ break;
+ }
+
+ case VIDIOCGUNIT:
+ {
+ struct video_unit *vu = arg;
+
+ vu->video = pdev->vdev->minor & 0x3F;
+ vu->audio = -1; /* not known yet */
+ vu->vbi = -1;
+ vu->radio = -1;
+ vu->teletext = -1;
+ break;
+ }
+
+ /* V4L2 Layer */
+ case VIDIOC_QUERYCAP:
+ {
+ struct v4l2_capability *cap = arg;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCAP) This application "\
+ "try to use the v4l2 layer\n");
+ strcpy(cap->driver,PWC_NAME);
+ strlcpy(cap->card, vdev->name, sizeof(cap->card));
+ usb_make_path(pdev->udev,cap->bus_info,sizeof(cap->bus_info));
+ cap->version = PWC_VERSION_CODE;
+ cap->capabilities =
+ V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_STREAMING |
+ V4L2_CAP_READWRITE;
+ return 0;
+ }
+
+ case VIDIOC_ENUMINPUT:
+ {
+ struct v4l2_input *i = arg;
+
+ if ( i->index ) /* Only one INPUT is supported */
+ return -EINVAL;
+
+ memset(i, 0, sizeof(struct v4l2_input));
+ strcpy(i->name, "usb");
+ return 0;
+ }
+
+ case VIDIOC_G_INPUT:
+ {
+ int *i = arg;
+ *i = 0; /* Only one INPUT is supported */
+ return 0;
+ }
+ case VIDIOC_S_INPUT:
+ {
+ int *i = arg;
+
+ if ( *i ) { /* Only one INPUT is supported */
+ PWC_DEBUG_IOCTL("Only one input source is"\
+ " supported with this webcam.\n");
+ return -EINVAL;
+ }
+ return 0;
+ }
+
+ /* TODO: */
+ case VIDIOC_QUERYCTRL:
+ {
+ struct v4l2_queryctrl *c = arg;
+ int i;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) query id=%d\n", c->id);
+ for (i=0; i<sizeof(pwc_controls)/sizeof(struct v4l2_queryctrl); i++) {
+ if (pwc_controls[i].id == c->id) {
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) found\n");
+ memcpy(c,&pwc_controls[i],sizeof(struct v4l2_queryctrl));
+ return 0;
+ }
+ }
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYCTRL) not found\n");
+
+ return -EINVAL;
+ }
+ case VIDIOC_G_CTRL:
+ {
+ struct v4l2_control *c = arg;
+ int ret;
+
+ switch (c->id)
+ {
+ case V4L2_CID_BRIGHTNESS:
+ c->value = pwc_get_brightness(pdev);
+ if (c->value<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_CONTRAST:
+ c->value = pwc_get_contrast(pdev);
+ if (c->value<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_SATURATION:
+ ret = pwc_get_saturation(pdev, &c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_GAMMA:
+ c->value = pwc_get_gamma(pdev);
+ if (c->value<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_RED_BALANCE:
+ ret = pwc_get_red_gain(pdev, &c->value);
+ if (ret<0)
+ return -EINVAL;
+ c->value >>= 8;
+ return 0;
+ case V4L2_CID_BLUE_BALANCE:
+ ret = pwc_get_blue_gain(pdev, &c->value);
+ if (ret<0)
+ return -EINVAL;
+ c->value >>= 8;
+ return 0;
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ ret = pwc_get_awb(pdev);
+ if (ret<0)
+ return -EINVAL;
+ c->value = (ret == PWC_WB_MANUAL)?0:1;
+ return 0;
+ case V4L2_CID_GAIN:
+ ret = pwc_get_agc(pdev, &c->value);
+ if (ret<0)
+ return -EINVAL;
+ c->value >>= 8;
+ return 0;
+ case V4L2_CID_AUTOGAIN:
+ ret = pwc_get_agc(pdev, &c->value);
+ if (ret<0)
+ return -EINVAL;
+ c->value = (c->value < 0)?1:0;
+ return 0;
+ case V4L2_CID_EXPOSURE:
+ ret = pwc_get_shutter_speed(pdev, &c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_COLOUR_MODE:
+ ret = pwc_get_colour_mode(pdev, &c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_AUTOCONTOUR:
+ ret = pwc_get_contour(pdev, &c->value);
+ if (ret < 0)
+ return -EINVAL;
+ c->value=(c->value == -1?1:0);
+ return 0;
+ case V4L2_CID_PRIVATE_CONTOUR:
+ ret = pwc_get_contour(pdev, &c->value);
+ if (ret < 0)
+ return -EINVAL;
+ c->value >>= 10;
+ return 0;
+ case V4L2_CID_PRIVATE_BACKLIGHT:
+ ret = pwc_get_backlight(pdev, &c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_FLICKERLESS:
+ ret = pwc_get_flicker(pdev, &c->value);
+ if (ret < 0)
+ return -EINVAL;
+ c->value=(c->value?1:0);
+ return 0;
+ case V4L2_CID_PRIVATE_NOISE_REDUCTION:
+ ret = pwc_get_dynamic_noise(pdev, &c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+
+ case V4L2_CID_PRIVATE_SAVE_USER:
+ case V4L2_CID_PRIVATE_RESTORE_USER:
+ case V4L2_CID_PRIVATE_RESTORE_FACTORY:
+ return -EINVAL;
+ }
+ return -EINVAL;
+ }
+ case VIDIOC_S_CTRL:
+ {
+ struct v4l2_control *c = arg;
+ int ret;
+
+ switch (c->id)
+ {
+ case V4L2_CID_BRIGHTNESS:
+ c->value <<= 9;
+ ret = pwc_set_brightness(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_CONTRAST:
+ c->value <<= 10;
+ ret = pwc_set_contrast(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_SATURATION:
+ ret = pwc_set_saturation(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_GAMMA:
+ c->value <<= 11;
+ ret = pwc_set_gamma(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_RED_BALANCE:
+ c->value <<= 8;
+ ret = pwc_set_red_gain(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_BLUE_BALANCE:
+ c->value <<= 8;
+ ret = pwc_set_blue_gain(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ c->value = (c->value == 0)?PWC_WB_MANUAL:PWC_WB_AUTO;
+ ret = pwc_set_awb(pdev, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_EXPOSURE:
+ c->value <<= 8;
+ ret = pwc_set_shutter_speed(pdev, c->value?0:1, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_AUTOGAIN:
+ /* autogain off means nothing without a gain */
+ if (c->value == 0)
+ return 0;
+ ret = pwc_set_agc(pdev, c->value, 0);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_GAIN:
+ c->value <<= 8;
+ ret = pwc_set_agc(pdev, 0, c->value);
+ if (ret<0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_SAVE_USER:
+ if (pwc_save_user(pdev))
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_RESTORE_USER:
+ if (pwc_restore_user(pdev))
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_RESTORE_FACTORY:
+ if (pwc_restore_factory(pdev))
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_COLOUR_MODE:
+ ret = pwc_set_colour_mode(pdev, c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_AUTOCONTOUR:
+ c->value=(c->value == 1)?-1:0;
+ ret = pwc_set_contour(pdev, c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_CONTOUR:
+ c->value <<= 10;
+ ret = pwc_set_contour(pdev, c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_BACKLIGHT:
+ ret = pwc_set_backlight(pdev, c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+ case V4L2_CID_PRIVATE_FLICKERLESS:
+ ret = pwc_set_flicker(pdev, c->value);
+ if (ret < 0)
+ return -EINVAL;
+ case V4L2_CID_PRIVATE_NOISE_REDUCTION:
+ ret = pwc_set_dynamic_noise(pdev, c->value);
+ if (ret < 0)
+ return -EINVAL;
+ return 0;
+
+ }
+ return -EINVAL;
+ }
+
+ case VIDIOC_ENUM_FMT:
+ {
+ struct v4l2_fmtdesc *f = arg;
+ int index;
+
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ /* We only support two format: the raw format, and YUV */
+ index = f->index;
+ memset(f,0,sizeof(struct v4l2_fmtdesc));
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ f->index = index;
+ switch(index)
+ {
+ case 0:
+ /* RAW format */
+ f->pixelformat = pdev->type<=646?V4L2_PIX_FMT_PWC1:V4L2_PIX_FMT_PWC2;
+ f->flags = V4L2_FMT_FLAG_COMPRESSED;
+ strlcpy(f->description,"Raw Philips Webcam",sizeof(f->description));
+ break;
+ case 1:
+ f->pixelformat = V4L2_PIX_FMT_YUV420;
+ strlcpy(f->description,"4:2:0, planar, Y-Cb-Cr",sizeof(f->description));
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+ }
+
+ case VIDIOC_G_FMT:
+ {
+ struct v4l2_format *f = arg;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",pdev->image.x,pdev->image.y);
+ if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ pwc_vidioc_fill_fmt(pdev, f);
+
+ return 0;
+ }
+
+ case VIDIOC_TRY_FMT:
+ return pwc_vidioc_try_fmt(pdev, arg);
+
+ case VIDIOC_S_FMT:
+ return pwc_vidioc_set_fmt(pdev, arg);
+
+ case VIDIOC_G_STD:
+ {
+ v4l2_std_id *std = arg;
+ *std = V4L2_STD_UNKNOWN;
+ return 0;
+ }
+
+ case VIDIOC_S_STD:
+ {
+ v4l2_std_id *std = arg;
+ if (*std != V4L2_STD_UNKNOWN)
+ return -EINVAL;
+ return 0;
+ }
+
+ case VIDIOC_ENUMSTD:
+ {
+ struct v4l2_standard *std = arg;
+ if (std->index != 0)
+ return -EINVAL;
+ std->id = V4L2_STD_UNKNOWN;
+ strncpy(std->name, "webcam", sizeof(std->name));
+ return 0;
+ }
+
+ case VIDIOC_REQBUFS:
+ {
+ struct v4l2_requestbuffers *rb = arg;
+ int nbuffers;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_REQBUFS) count=%d\n",rb->count);
+ if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (rb->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+
+ nbuffers = rb->count;
+ if (nbuffers < 2)
+ nbuffers = 2;
+ else if (nbuffers > pwc_mbufs)
+ nbuffers = pwc_mbufs;
+ /* Force to use our # of buffers */
+ rb->count = pwc_mbufs;
+ return 0;
+ }
+
+ case VIDIOC_QUERYBUF:
+ {
+ struct v4l2_buffer *buf = arg;
+ int index;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) index=%d\n",buf->index);
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad type\n");
+ return -EINVAL;
+ }
+ if (buf->memory != V4L2_MEMORY_MMAP) {
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad memory type\n");
+ return -EINVAL;
+ }
+ index = buf->index;
+ if (index < 0 || index >= pwc_mbufs) {
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad index %d\n", buf->index);
+ return -EINVAL;
+ }
+
+ memset(buf, 0, sizeof(struct v4l2_buffer));
+ buf->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ buf->index = index;
+ buf->m.offset = index * pdev->len_per_image;
+ if (pdev->vpalette == VIDEO_PALETTE_RAW)
+ buf->bytesused = pdev->frame_size + sizeof(struct pwc_raw_frame);
+ else
+ buf->bytesused = pdev->view.size;
+ buf->field = V4L2_FIELD_NONE;
+ buf->memory = V4L2_MEMORY_MMAP;
+ //buf->flags = V4L2_BUF_FLAG_MAPPED;
+ buf->length = pdev->len_per_image;
+
+ PWC_DEBUG_READ("VIDIOC_QUERYBUF: index=%d\n",buf->index);
+ PWC_DEBUG_READ("VIDIOC_QUERYBUF: m.offset=%d\n",buf->m.offset);
+ PWC_DEBUG_READ("VIDIOC_QUERYBUF: bytesused=%d\n",buf->bytesused);
+
+ return 0;
+ }
+
+ case VIDIOC_QBUF:
+ {
+ struct v4l2_buffer *buf = arg;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_QBUF) index=%d\n",buf->index);
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (buf->memory != V4L2_MEMORY_MMAP)
+ return -EINVAL;
+ if (buf->index < 0 || buf->index >= pwc_mbufs)
+ return -EINVAL;
+
+ buf->flags |= V4L2_BUF_FLAG_QUEUED;
+ buf->flags &= ~V4L2_BUF_FLAG_DONE;
+
+ return 0;
+ }
+
+ case VIDIOC_DQBUF:
+ {
+ struct v4l2_buffer *buf = arg;
+ int ret;
+
+ PWC_DEBUG_IOCTL("ioctl(VIDIOC_DQBUF)\n");
+
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
+ /* Add ourselves to the frame wait-queue.
+
+ FIXME: needs auditing for safety.
+ QUESTION: In what respect? I think that using the
+ frameq is safe now.
+ */
+ add_wait_queue(&pdev->frameq, &wait);
+ while (pdev->full_frames == NULL) {
+ if (pdev->error_status) {
+ remove_wait_queue(&pdev->frameq, &wait);
+ set_current_state(TASK_RUNNING);
+ return -pdev->error_status;
+ }
+
+ if (signal_pending(current)) {
+ remove_wait_queue(&pdev->frameq, &wait);
+ set_current_state(TASK_RUNNING);
+ return -ERESTARTSYS;
+ }
+ schedule();
+ set_current_state(TASK_INTERRUPTIBLE);
+ }
+ remove_wait_queue(&pdev->frameq, &wait);
+ set_current_state(TASK_RUNNING);
+
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: frame ready.\n");
+ /* Decompress data in pdev->images[pdev->fill_image] */
+ ret = pwc_handle_frame(pdev);
+ if (ret)
+ return -EFAULT;
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: after pwc_handle_frame\n");
+
+ buf->index = pdev->fill_image;
+ if (pdev->vpalette == VIDEO_PALETTE_RAW)
+ buf->bytesused = pdev->frame_size + sizeof(struct pwc_raw_frame);
+ else
+ buf->bytesused = pdev->view.size;
+ buf->flags = V4L2_BUF_FLAG_MAPPED;
+ buf->field = V4L2_FIELD_NONE;
+ do_gettimeofday(&buf->timestamp);
+ buf->sequence = 0;
+ buf->memory = V4L2_MEMORY_MMAP;
+ buf->m.offset = pdev->fill_image * pdev->len_per_image;
+ buf->length = buf->bytesused;
+ pwc_next_image(pdev);
+
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->index=%d\n",buf->index);
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: buf->length=%d\n",buf->length);
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: m.offset=%d\n",buf->m.offset);
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: bytesused=%d\n",buf->bytesused);
+ PWC_DEBUG_IOCTL("VIDIOC_DQBUF: leaving\n");
+ return 0;
+
+ }
+
+ case VIDIOC_STREAMON:
+ {
+ /* WARNING: pwc_try_video_mode() called pwc_isoc_init */
+ pwc_isoc_init(pdev);
+ return 0;
+ }
+
+ case VIDIOC_STREAMOFF:
+ {
+ pwc_isoc_cleanup(pdev);
+ return 0;
+ }
+
+ default:
+ return pwc_ioctl(pdev, cmd, arg);
+ } /* ..switch */
+ return 0;
+}
+
+/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */
git://git.onelab.eu / linux-2.6.git / blobdiff