| /* 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/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; |
| |
| } |
| |
| long pwc_video_do_ioctl(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 = video_get_drvdata(vdev); |
| if (pdev == NULL) |
| return -EFAULT; |
| |
| #ifdef CONFIG_USB_PWC_DEBUG |
| if (PWC_DEBUG_LEVEL_IOCTL & pwc_trace) { |
| v4l_printk_ioctl(cmd); |
| printk("\n"); |
| } |
| #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; |
| strlcpy(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 >= 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 = pdev->len_per_image; |
| 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; |
| } |
| |
| case VIDIOC_ENUM_FRAMESIZES: |
| { |
| struct v4l2_frmsizeenum *fsize = arg; |
| unsigned int i = 0, index = fsize->index; |
| |
| if (fsize->pixel_format == V4L2_PIX_FMT_YUV420) { |
| for (i = 0; i < PSZ_MAX; i++) { |
| if (pdev->image_mask & (1UL << i)) { |
| if (!index--) { |
| fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; |
| fsize->discrete.width = pwc_image_sizes[i].x; |
| fsize->discrete.height = pwc_image_sizes[i].y; |
| return 0; |
| } |
| } |
| } |
| } else if (fsize->index == 0 && |
| ((fsize->pixel_format == V4L2_PIX_FMT_PWC1 && DEVICE_USE_CODEC1(pdev->type)) || |
| (fsize->pixel_format == V4L2_PIX_FMT_PWC2 && DEVICE_USE_CODEC23(pdev->type)))) { |
| |
| fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; |
| fsize->discrete.width = pdev->abs_max.x; |
| fsize->discrete.height = pdev->abs_max.y; |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| case VIDIOC_ENUM_FRAMEINTERVALS: |
| { |
| struct v4l2_frmivalenum *fival = arg; |
| int size = -1; |
| unsigned int i; |
| |
| for (i = 0; i < PSZ_MAX; i++) { |
| if (pwc_image_sizes[i].x == fival->width && |
| pwc_image_sizes[i].y == fival->height) { |
| size = i; |
| break; |
| } |
| } |
| |
| /* TODO: Support raw format */ |
| if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420) { |
| return -EINVAL; |
| } |
| |
| i = pwc_get_fps(pdev, fival->index, size); |
| if (!i) |
| return -EINVAL; |
| |
| fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; |
| fival->discrete.numerator = 1; |
| fival->discrete.denominator = i; |
| |
| return 0; |
| } |
| |
| default: |
| return pwc_ioctl(pdev, cmd, arg); |
| } /* ..switch */ |
| return 0; |
| } |
| |
| /* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |