diff options
Diffstat (limited to 'drivers/media/video/pwc/pwc-v4l.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-v4l.c | 1202 |
1 files changed, 1202 insertions, 0 deletions
diff --git a/drivers/media/video/pwc/pwc-v4l.c b/drivers/media/video/pwc/pwc-v4l.c new file mode 100644 index 00000000000..b7eb3ce3b96 --- /dev/null +++ b/drivers/media/video/pwc/pwc-v4l.c @@ -0,0 +1,1202 @@ +/* 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: */ |