diff options
Diffstat (limited to 'drivers/media/video/pwc/pwc-v4l.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-v4l.c | 914 |
1 files changed, 914 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 00000000..f85c5124 --- /dev/null +++ b/drivers/media/video/pwc/pwc-v4l.c @@ -0,0 +1,914 @@ +/* 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->pixfmt == V4L2_PIX_FMT_YUV420) { + 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 && + pixelformat != V4L2_PIX_FMT_PWC1 && + pixelformat != V4L2_PIX_FMT_PWC2) + return -EINVAL; + + if (pdev->iso_init) + return -EBUSY; + + PWC_DEBUG_IOCTL("Trying to set 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_set_video_mode(pdev, + f->fmt.pix.width, + f->fmt.pix.height, + fps, + compression, + snapshot); + + PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret); + + if (ret) + return ret; + + pdev->pixfmt = pixelformat; + + pwc_vidioc_fill_fmt(pdev, f); + + return 0; + +} + +static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) +{ + struct video_device *vdev = video_devdata(file); + struct pwc_device *pdev = video_drvdata(file); + + 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; +} + +static int pwc_enum_input(struct file *file, void *fh, struct v4l2_input *i) +{ + if (i->index) /* Only one INPUT is supported */ + return -EINVAL; + + strcpy(i->name, "usb"); + return 0; +} + +static int pwc_g_input(struct file *file, void *fh, unsigned int *i) +{ + *i = 0; + return 0; +} + +static int pwc_s_input(struct file *file, void *fh, unsigned int i) +{ + return i ? -EINVAL : 0; +} + +static int pwc_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *c) +{ + int i, idx; + u32 id; + + id = c->id; + if (id & V4L2_CTRL_FLAG_NEXT_CTRL) { + id &= V4L2_CTRL_ID_MASK; + id++; + idx = -1; + for (i = 0; i < ARRAY_SIZE(pwc_controls); i++) { + if (pwc_controls[i].id < id) + continue; + if (idx >= 0 + && pwc_controls[i].id > pwc_controls[idx].id) + continue; + idx = i; + } + if (idx < 0) + return -EINVAL; + memcpy(c, &pwc_controls[idx], sizeof pwc_controls[0]); + return 0; + } + 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; + } + } + return -EINVAL; +} + +static int pwc_g_ctrl(struct file *file, void *fh, struct v4l2_control *c) +{ + struct pwc_device *pdev = video_drvdata(file); + 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; +} + +static int pwc_s_ctrl(struct file *file, void *fh, struct v4l2_control *c) +{ + struct pwc_device *pdev = video_drvdata(file); + 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; +} + +static int pwc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) +{ + struct pwc_device *pdev = video_drvdata(file); + + /* We only support two format: the raw format, and YUV */ + switch (f->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; +} + +static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) +{ + struct pwc_device *pdev = video_drvdata(file); + + PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n", + pdev->image.x, pdev->image.y); + pwc_vidioc_fill_fmt(pdev, f); + return 0; +} + +static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) +{ + struct pwc_device *pdev = video_drvdata(file); + + return pwc_vidioc_try_fmt(pdev, f); +} + +static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) +{ + struct pwc_device *pdev = video_drvdata(file); + + return pwc_vidioc_set_fmt(pdev, f); +} + +static int pwc_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb) +{ + 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; +} + +static int pwc_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) +{ + struct pwc_device *pdev = video_drvdata(file); + 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; + } + index = buf->index; + if (index < 0 || index >= pwc_mbufs) { + PWC_DEBUG_IOCTL("ioctl(VIDIOC_QUERYBUF) Bad index %d\n", buf->index); + return -EINVAL; + } + + buf->m.offset = index * pdev->len_per_image; + if (pdev->pixfmt != V4L2_PIX_FMT_YUV420) + 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; +} + +static int pwc_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) +{ + 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; +} + +static int pwc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) +{ + DECLARE_WAITQUEUE(wait, current); + struct pwc_device *pdev = video_drvdata(file); + int ret; + + PWC_DEBUG_IOCTL("ioctl(VIDIOC_DQBUF)\n"); + + if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + return -EINVAL; + + 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; + } + mutex_unlock(&pdev->modlock); + schedule(); + set_current_state(TASK_INTERRUPTIBLE); + mutex_lock(&pdev->modlock); + } + 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->pixfmt != V4L2_PIX_FMT_YUV420) + 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; + +} + +static int pwc_streamon(struct file *file, void *fh, enum v4l2_buf_type i) +{ + struct pwc_device *pdev = video_drvdata(file); + + return pwc_isoc_init(pdev); +} + +static int pwc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i) +{ + struct pwc_device *pdev = video_drvdata(file); + + pwc_isoc_cleanup(pdev); + return 0; +} + +static int pwc_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct pwc_device *pdev = video_drvdata(file); + 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; +} + +static int pwc_enum_frameintervals(struct file *file, void *fh, + struct v4l2_frmivalenum *fival) +{ + struct pwc_device *pdev = video_drvdata(file); + 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; +} + +static long pwc_default(struct file *file, void *fh, bool valid_prio, + int cmd, void *arg) +{ + struct pwc_device *pdev = video_drvdata(file); + + return pwc_ioctl(pdev, cmd, arg); +} + +const struct v4l2_ioctl_ops pwc_ioctl_ops = { + .vidioc_querycap = pwc_querycap, + .vidioc_enum_input = pwc_enum_input, + .vidioc_g_input = pwc_g_input, + .vidioc_s_input = pwc_s_input, + .vidioc_enum_fmt_vid_cap = pwc_enum_fmt_vid_cap, + .vidioc_g_fmt_vid_cap = pwc_g_fmt_vid_cap, + .vidioc_s_fmt_vid_cap = pwc_s_fmt_vid_cap, + .vidioc_try_fmt_vid_cap = pwc_try_fmt_vid_cap, + .vidioc_queryctrl = pwc_queryctrl, + .vidioc_g_ctrl = pwc_g_ctrl, + .vidioc_s_ctrl = pwc_s_ctrl, + .vidioc_reqbufs = pwc_reqbufs, + .vidioc_querybuf = pwc_querybuf, + .vidioc_qbuf = pwc_qbuf, + .vidioc_dqbuf = pwc_dqbuf, + .vidioc_streamon = pwc_streamon, + .vidioc_streamoff = pwc_streamoff, + .vidioc_enum_framesizes = pwc_enum_framesizes, + .vidioc_enum_frameintervals = pwc_enum_frameintervals, + .vidioc_default = pwc_default, +}; + + +/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |