| /**************************************************************************** |
| * |
| * Filename: cpia2_v4l.c |
| * |
| * Copyright 2001, STMicrolectronics, Inc. |
| * Contact: steve.miller@st.com |
| * Copyright 2001,2005, Scott J. Bertin <scottbertin@yahoo.com> |
| * |
| * Description: |
| * This is a USB driver for CPia2 based video cameras. |
| * The infrastructure of this driver is based on the cpia usb driver by |
| * Jochen Scharrlach and Johannes Erdfeldt. |
| * |
| * 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., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Stripped of 2.4 stuff ready for main kernel submit by |
| * Alan Cox <alan@redhat.com> |
| ****************************************************************************/ |
| |
| #include <linux/version.h> |
| |
| |
| #include <linux/module.h> |
| #include <linux/time.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/init.h> |
| #include <linux/moduleparam.h> |
| |
| #include "cpia2.h" |
| #include "cpia2dev.h" |
| |
| |
| //#define _CPIA2_DEBUG_ |
| |
| #define MAKE_STRING_1(x) #x |
| #define MAKE_STRING(x) MAKE_STRING_1(x) |
| |
| static int video_nr = -1; |
| module_param(video_nr, int, 0); |
| MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)"); |
| |
| static int buffer_size = 68*1024; |
| module_param(buffer_size, int, 0); |
| MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)"); |
| |
| static int num_buffers = 3; |
| module_param(num_buffers, int, 0); |
| MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-" |
| MAKE_STRING(VIDEO_MAX_FRAME) ", default 3)"); |
| |
| static int alternate = DEFAULT_ALT; |
| module_param(alternate, int, 0); |
| MODULE_PARM_DESC(alternate, "USB Alternate (" MAKE_STRING(USBIF_ISO_1) "-" |
| MAKE_STRING(USBIF_ISO_6) ", default " |
| MAKE_STRING(DEFAULT_ALT) ")"); |
| |
| static int flicker_freq = 60; |
| module_param(flicker_freq, int, 0); |
| MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" MAKE_STRING(50) "or" |
| MAKE_STRING(60) ", default " |
| MAKE_STRING(60) ")"); |
| |
| static int flicker_mode = NEVER_FLICKER; |
| module_param(flicker_mode, int, 0); |
| MODULE_PARM_DESC(flicker_mode, |
| "Flicker supression (" MAKE_STRING(NEVER_FLICKER) "or" |
| MAKE_STRING(ANTI_FLICKER_ON) ", default " |
| MAKE_STRING(NEVER_FLICKER) ")"); |
| |
| MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>"); |
| MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras"); |
| MODULE_SUPPORTED_DEVICE("video"); |
| MODULE_LICENSE("GPL"); |
| |
| #define ABOUT "V4L-Driver for Vision CPiA2 based cameras" |
| |
| #ifndef VID_HARDWARE_CPIA2 |
| #error "VID_HARDWARE_CPIA2 should have been defined in linux/videodev.h" |
| #endif |
| |
| struct control_menu_info { |
| int value; |
| char name[32]; |
| }; |
| |
| static struct control_menu_info framerate_controls[] = |
| { |
| { CPIA2_VP_FRAMERATE_6_25, "6.25 fps" }, |
| { CPIA2_VP_FRAMERATE_7_5, "7.5 fps" }, |
| { CPIA2_VP_FRAMERATE_12_5, "12.5 fps" }, |
| { CPIA2_VP_FRAMERATE_15, "15 fps" }, |
| { CPIA2_VP_FRAMERATE_25, "25 fps" }, |
| { CPIA2_VP_FRAMERATE_30, "30 fps" }, |
| }; |
| #define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls)) |
| |
| static struct control_menu_info flicker_controls[] = |
| { |
| { NEVER_FLICKER, "Off" }, |
| { FLICKER_50, "50 Hz" }, |
| { FLICKER_60, "60 Hz" }, |
| }; |
| #define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls)) |
| |
| static struct control_menu_info lights_controls[] = |
| { |
| { 0, "Off" }, |
| { 64, "Top" }, |
| { 128, "Bottom" }, |
| { 192, "Both" }, |
| }; |
| #define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls)) |
| #define GPIO_LIGHTS_MASK 192 |
| |
| static struct v4l2_queryctrl controls[] = { |
| { |
| .id = V4L2_CID_BRIGHTNESS, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Brightness", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| .default_value = DEFAULT_BRIGHTNESS, |
| }, |
| { |
| .id = V4L2_CID_CONTRAST, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Contrast", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| .default_value = DEFAULT_CONTRAST, |
| }, |
| { |
| .id = V4L2_CID_SATURATION, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Saturation", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| .default_value = DEFAULT_SATURATION, |
| }, |
| { |
| .id = V4L2_CID_HFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Mirror Horizontally", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 0, |
| }, |
| { |
| .id = V4L2_CID_VFLIP, |
| .type = V4L2_CTRL_TYPE_BOOLEAN, |
| .name = "Flip Vertically", |
| .minimum = 0, |
| .maximum = 1, |
| .step = 1, |
| .default_value = 0, |
| }, |
| { |
| .id = CPIA2_CID_TARGET_KB, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Target KB", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| .default_value = DEFAULT_TARGET_KB, |
| }, |
| { |
| .id = CPIA2_CID_GPIO, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "GPIO", |
| .minimum = 0, |
| .maximum = 255, |
| .step = 1, |
| .default_value = 0, |
| }, |
| { |
| .id = CPIA2_CID_FLICKER_MODE, |
| .type = V4L2_CTRL_TYPE_MENU, |
| .name = "Flicker Reduction", |
| .minimum = 0, |
| .maximum = NUM_FLICKER_CONTROLS-1, |
| .step = 1, |
| .default_value = 0, |
| }, |
| { |
| .id = CPIA2_CID_FRAMERATE, |
| .type = V4L2_CTRL_TYPE_MENU, |
| .name = "Framerate", |
| .minimum = 0, |
| .maximum = NUM_FRAMERATE_CONTROLS-1, |
| .step = 1, |
| .default_value = NUM_FRAMERATE_CONTROLS-1, |
| }, |
| { |
| .id = CPIA2_CID_USB_ALT, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "USB Alternate", |
| .minimum = USBIF_ISO_1, |
| .maximum = USBIF_ISO_6, |
| .step = 1, |
| .default_value = DEFAULT_ALT, |
| }, |
| { |
| .id = CPIA2_CID_LIGHTS, |
| .type = V4L2_CTRL_TYPE_MENU, |
| .name = "Lights", |
| .minimum = 0, |
| .maximum = NUM_LIGHTS_CONTROLS-1, |
| .step = 1, |
| .default_value = 0, |
| }, |
| { |
| .id = CPIA2_CID_RESET_CAMERA, |
| .type = V4L2_CTRL_TYPE_BUTTON, |
| .name = "Reset Camera", |
| .minimum = 0, |
| .maximum = 0, |
| .step = 0, |
| .default_value = 0, |
| }, |
| }; |
| #define NUM_CONTROLS (ARRAY_SIZE(controls)) |
| |
| |
| /****************************************************************************** |
| * |
| * cpia2_open |
| * |
| *****************************************************************************/ |
| static int cpia2_open(struct inode *inode, struct file *file) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct camera_data *cam = video_get_drvdata(dev); |
| int retval = 0; |
| |
| if (!cam) { |
| ERR("Internal error, camera_data not found!\n"); |
| return -ENODEV; |
| } |
| |
| if(mutex_lock_interruptible(&cam->busy_lock)) |
| return -ERESTARTSYS; |
| |
| if(!cam->present) { |
| retval = -ENODEV; |
| goto err_return; |
| } |
| |
| if (cam->open_count > 0) { |
| goto skip_init; |
| } |
| |
| if (cpia2_allocate_buffers(cam)) { |
| retval = -ENOMEM; |
| goto err_return; |
| } |
| |
| /* reset the camera */ |
| if (cpia2_reset_camera(cam) < 0) { |
| retval = -EIO; |
| goto err_return; |
| } |
| |
| cam->APP_len = 0; |
| cam->COM_len = 0; |
| |
| skip_init: |
| { |
| struct cpia2_fh *fh = kmalloc(sizeof(*fh),GFP_KERNEL); |
| if(!fh) { |
| retval = -ENOMEM; |
| goto err_return; |
| } |
| file->private_data = fh; |
| fh->prio = V4L2_PRIORITY_UNSET; |
| v4l2_prio_open(&cam->prio, &fh->prio); |
| fh->mmapped = 0; |
| } |
| |
| ++cam->open_count; |
| |
| cpia2_dbg_dump_registers(cam); |
| |
| err_return: |
| mutex_unlock(&cam->busy_lock); |
| return retval; |
| } |
| |
| /****************************************************************************** |
| * |
| * cpia2_close |
| * |
| *****************************************************************************/ |
| static int cpia2_close(struct inode *inode, struct file *file) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct camera_data *cam = video_get_drvdata(dev); |
| struct cpia2_fh *fh = file->private_data; |
| |
| mutex_lock(&cam->busy_lock); |
| |
| if (cam->present && |
| (cam->open_count == 1 |
| || fh->prio == V4L2_PRIORITY_RECORD |
| )) { |
| cpia2_usb_stream_stop(cam); |
| |
| if(cam->open_count == 1) { |
| /* save camera state for later open */ |
| cpia2_save_camera_state(cam); |
| |
| cpia2_set_low_power(cam); |
| cpia2_free_buffers(cam); |
| } |
| } |
| |
| { |
| if(fh->mmapped) |
| cam->mmapped = 0; |
| v4l2_prio_close(&cam->prio,&fh->prio); |
| file->private_data = NULL; |
| kfree(fh); |
| } |
| |
| if (--cam->open_count == 0) { |
| cpia2_free_buffers(cam); |
| if (!cam->present) { |
| video_unregister_device(dev); |
| mutex_unlock(&cam->busy_lock); |
| kfree(cam); |
| return 0; |
| } |
| } |
| |
| mutex_unlock(&cam->busy_lock); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * cpia2_v4l_read |
| * |
| *****************************************************************************/ |
| static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count, |
| loff_t *off) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct camera_data *cam = video_get_drvdata(dev); |
| int noblock = file->f_flags&O_NONBLOCK; |
| |
| struct cpia2_fh *fh = file->private_data; |
| |
| if(!cam) |
| return -EINVAL; |
| |
| /* Priority check */ |
| if(fh->prio != V4L2_PRIORITY_RECORD) { |
| return -EBUSY; |
| } |
| |
| return cpia2_read(cam, buf, count, noblock); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * cpia2_v4l_poll |
| * |
| *****************************************************************************/ |
| static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait) |
| { |
| struct video_device *dev = video_devdata(filp); |
| struct camera_data *cam = video_get_drvdata(dev); |
| |
| struct cpia2_fh *fh = filp->private_data; |
| |
| if(!cam) |
| return POLLERR; |
| |
| /* Priority check */ |
| if(fh->prio != V4L2_PRIORITY_RECORD) { |
| return POLLERR; |
| } |
| |
| return cpia2_poll(cam, filp, wait); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * ioctl_cap_query |
| * |
| *****************************************************************************/ |
| static int ioctl_cap_query(void *arg, struct camera_data *cam) |
| { |
| struct video_capability *vc; |
| int retval = 0; |
| vc = arg; |
| |
| if (cam->params.pnp_id.product == 0x151) |
| strcpy(vc->name, "QX5 Microscope"); |
| else |
| strcpy(vc->name, "CPiA2 Camera"); |
| |
| vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER; |
| vc->channels = 1; |
| vc->audios = 0; |
| vc->minwidth = 176; /* VIDEOSIZE_QCIF */ |
| vc->minheight = 144; |
| switch (cam->params.version.sensor_flags) { |
| case CPIA2_VP_SENSOR_FLAGS_500: |
| vc->maxwidth = STV_IMAGE_VGA_COLS; |
| vc->maxheight = STV_IMAGE_VGA_ROWS; |
| break; |
| case CPIA2_VP_SENSOR_FLAGS_410: |
| vc->maxwidth = STV_IMAGE_CIF_COLS; |
| vc->maxheight = STV_IMAGE_CIF_ROWS; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return retval; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_get_channel |
| * |
| *****************************************************************************/ |
| static int ioctl_get_channel(void *arg) |
| { |
| int retval = 0; |
| struct video_channel *v; |
| v = arg; |
| |
| if (v->channel != 0) |
| return -EINVAL; |
| |
| v->channel = 0; |
| strcpy(v->name, "Camera"); |
| v->tuners = 0; |
| v->flags = 0; |
| v->type = VIDEO_TYPE_CAMERA; |
| v->norm = 0; |
| |
| return retval; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_set_channel |
| * |
| *****************************************************************************/ |
| static int ioctl_set_channel(void *arg) |
| { |
| struct video_channel *v; |
| int retval = 0; |
| v = arg; |
| |
| if (retval == 0 && v->channel != 0) |
| retval = -EINVAL; |
| |
| return retval; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_set_image_prop |
| * |
| *****************************************************************************/ |
| static int ioctl_set_image_prop(void *arg, struct camera_data *cam) |
| { |
| struct video_picture *vp; |
| int retval = 0; |
| vp = arg; |
| |
| /* brightness, color, contrast need no check 0-65535 */ |
| memcpy(&cam->vp, vp, sizeof(*vp)); |
| |
| /* update cam->params.colorParams */ |
| cam->params.color_params.brightness = vp->brightness / 256; |
| cam->params.color_params.saturation = vp->colour / 256; |
| cam->params.color_params.contrast = vp->contrast / 256; |
| |
| DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n", |
| cam->params.color_params.brightness, |
| cam->params.color_params.saturation, |
| cam->params.color_params.contrast); |
| |
| cpia2_set_color_params(cam); |
| |
| return retval; |
| } |
| |
| static int sync(struct camera_data *cam, int frame_nr) |
| { |
| struct framebuf *frame = &cam->buffers[frame_nr]; |
| |
| while (1) { |
| if (frame->status == FRAME_READY) |
| return 0; |
| |
| if (!cam->streaming) { |
| frame->status = FRAME_READY; |
| frame->length = 0; |
| return 0; |
| } |
| |
| mutex_unlock(&cam->busy_lock); |
| wait_event_interruptible(cam->wq_stream, |
| !cam->streaming || |
| frame->status == FRAME_READY); |
| mutex_lock(&cam->busy_lock); |
| if (signal_pending(current)) |
| return -ERESTARTSYS; |
| if(!cam->present) |
| return -ENOTTY; |
| } |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_set_window_size |
| * |
| *****************************************************************************/ |
| static int ioctl_set_window_size(void *arg, struct camera_data *cam, |
| struct cpia2_fh *fh) |
| { |
| /* copy_from_user, check validity, copy to internal structure */ |
| struct video_window *vw; |
| int frame, err; |
| vw = arg; |
| |
| if (vw->clipcount != 0) /* clipping not supported */ |
| return -EINVAL; |
| |
| if (vw->clips != NULL) /* clipping not supported */ |
| return -EINVAL; |
| |
| /* Ensure that only this process can change the format. */ |
| err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD); |
| if(err != 0) |
| return err; |
| |
| cam->pixelformat = V4L2_PIX_FMT_JPEG; |
| |
| /* Be sure to supply the Huffman tables, this isn't MJPEG */ |
| cam->params.compression.inhibit_htables = 0; |
| |
| /* we set the video window to something smaller or equal to what |
| * is requested by the user??? |
| */ |
| DBG("Requested width = %d, height = %d\n", vw->width, vw->height); |
| if (vw->width != cam->vw.width || vw->height != cam->vw.height) { |
| cam->vw.width = vw->width; |
| cam->vw.height = vw->height; |
| cam->params.roi.width = vw->width; |
| cam->params.roi.height = vw->height; |
| cpia2_set_format(cam); |
| } |
| |
| for (frame = 0; frame < cam->num_frames; ++frame) { |
| if (cam->buffers[frame].status == FRAME_READING) |
| if ((err = sync(cam, frame)) < 0) |
| return err; |
| |
| cam->buffers[frame].status = FRAME_EMPTY; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_get_mbuf |
| * |
| *****************************************************************************/ |
| static int ioctl_get_mbuf(void *arg, struct camera_data *cam) |
| { |
| struct video_mbuf *vm; |
| int i; |
| vm = arg; |
| |
| memset(vm, 0, sizeof(*vm)); |
| vm->size = cam->frame_size*cam->num_frames; |
| vm->frames = cam->num_frames; |
| for (i = 0; i < cam->num_frames; i++) |
| vm->offsets[i] = cam->frame_size * i; |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_mcapture |
| * |
| *****************************************************************************/ |
| static int ioctl_mcapture(void *arg, struct camera_data *cam, |
| struct cpia2_fh *fh) |
| { |
| struct video_mmap *vm; |
| int video_size, err; |
| vm = arg; |
| |
| if (vm->frame < 0 || vm->frame >= cam->num_frames) |
| return -EINVAL; |
| |
| /* set video size */ |
| video_size = cpia2_match_video_size(vm->width, vm->height); |
| if (cam->video_size < 0) { |
| return -EINVAL; |
| } |
| |
| /* Ensure that only this process can change the format. */ |
| err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD); |
| if(err != 0) |
| return err; |
| |
| if (video_size != cam->video_size) { |
| cam->video_size = video_size; |
| cam->params.roi.width = vm->width; |
| cam->params.roi.height = vm->height; |
| cpia2_set_format(cam); |
| } |
| |
| if (cam->buffers[vm->frame].status == FRAME_READING) |
| if ((err=sync(cam, vm->frame)) < 0) |
| return err; |
| |
| cam->buffers[vm->frame].status = FRAME_EMPTY; |
| |
| return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode); |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_sync |
| * |
| *****************************************************************************/ |
| static int ioctl_sync(void *arg, struct camera_data *cam) |
| { |
| int frame; |
| |
| frame = *(int*)arg; |
| |
| if (frame < 0 || frame >= cam->num_frames) |
| return -EINVAL; |
| |
| return sync(cam, frame); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * ioctl_set_gpio |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_set_gpio(void *arg, struct camera_data *cam) |
| { |
| __u32 gpio_val; |
| |
| gpio_val = *(__u32*) arg; |
| |
| if (gpio_val &~ 0xFFU) |
| return -EINVAL; |
| |
| return cpia2_set_gpio(cam, (unsigned char)gpio_val); |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_querycap |
| * |
| * V4L2 device capabilities |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_querycap(void *arg, struct camera_data *cam) |
| { |
| struct v4l2_capability *vc = arg; |
| |
| memset(vc, 0, sizeof(*vc)); |
| strcpy(vc->driver, "cpia2"); |
| |
| if (cam->params.pnp_id.product == 0x151) |
| strcpy(vc->card, "QX5 Microscope"); |
| else |
| strcpy(vc->card, "CPiA2 Camera"); |
| switch (cam->params.pnp_id.device_type) { |
| case DEVICE_STV_672: |
| strcat(vc->card, " (672/"); |
| break; |
| case DEVICE_STV_676: |
| strcat(vc->card, " (676/"); |
| break; |
| default: |
| strcat(vc->card, " (???/"); |
| break; |
| } |
| switch (cam->params.version.sensor_flags) { |
| case CPIA2_VP_SENSOR_FLAGS_404: |
| strcat(vc->card, "404)"); |
| break; |
| case CPIA2_VP_SENSOR_FLAGS_407: |
| strcat(vc->card, "407)"); |
| break; |
| case CPIA2_VP_SENSOR_FLAGS_409: |
| strcat(vc->card, "409)"); |
| break; |
| case CPIA2_VP_SENSOR_FLAGS_410: |
| strcat(vc->card, "410)"); |
| break; |
| case CPIA2_VP_SENSOR_FLAGS_500: |
| strcat(vc->card, "500)"); |
| break; |
| default: |
| strcat(vc->card, "???)"); |
| break; |
| } |
| |
| if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0) |
| memset(vc->bus_info,0, sizeof(vc->bus_info)); |
| |
| vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER, |
| CPIA2_PATCH_VER); |
| |
| vc->capabilities = V4L2_CAP_VIDEO_CAPTURE | |
| V4L2_CAP_READWRITE | |
| V4L2_CAP_STREAMING; |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_input |
| * |
| * V4L2 input get/set/enumerate |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam) |
| { |
| struct v4l2_input *i = arg; |
| |
| if(ioclt_nr != VIDIOC_G_INPUT) { |
| if (i->index != 0) |
| return -EINVAL; |
| } |
| |
| memset(i, 0, sizeof(*i)); |
| strcpy(i->name, "Camera"); |
| i->type = V4L2_INPUT_TYPE_CAMERA; |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_enum_fmt |
| * |
| * V4L2 format enumerate |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_enum_fmt(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_fmtdesc *f = arg; |
| int index = f->index; |
| |
| if (index < 0 || index > 1) |
| return -EINVAL; |
| |
| memset(f, 0, sizeof(*f)); |
| f->index = index; |
| f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| f->flags = V4L2_FMT_FLAG_COMPRESSED; |
| switch(index) { |
| case 0: |
| strcpy(f->description, "MJPEG"); |
| f->pixelformat = V4L2_PIX_FMT_MJPEG; |
| break; |
| case 1: |
| strcpy(f->description, "JPEG"); |
| f->pixelformat = V4L2_PIX_FMT_JPEG; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_try_fmt |
| * |
| * V4L2 format try |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_try_fmt(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_format *f = arg; |
| |
| if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG && |
| f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) |
| return -EINVAL; |
| |
| f->fmt.pix.field = V4L2_FIELD_NONE; |
| f->fmt.pix.bytesperline = 0; |
| f->fmt.pix.sizeimage = cam->frame_size; |
| f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
| f->fmt.pix.priv = 0; |
| |
| switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) { |
| case VIDEOSIZE_VGA: |
| f->fmt.pix.width = 640; |
| f->fmt.pix.height = 480; |
| break; |
| case VIDEOSIZE_CIF: |
| f->fmt.pix.width = 352; |
| f->fmt.pix.height = 288; |
| break; |
| case VIDEOSIZE_QVGA: |
| f->fmt.pix.width = 320; |
| f->fmt.pix.height = 240; |
| break; |
| case VIDEOSIZE_288_216: |
| f->fmt.pix.width = 288; |
| f->fmt.pix.height = 216; |
| break; |
| case VIDEOSIZE_256_192: |
| f->fmt.pix.width = 256; |
| f->fmt.pix.height = 192; |
| break; |
| case VIDEOSIZE_224_168: |
| f->fmt.pix.width = 224; |
| f->fmt.pix.height = 168; |
| break; |
| case VIDEOSIZE_192_144: |
| f->fmt.pix.width = 192; |
| f->fmt.pix.height = 144; |
| break; |
| case VIDEOSIZE_QCIF: |
| default: |
| f->fmt.pix.width = 176; |
| f->fmt.pix.height = 144; |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_set_fmt |
| * |
| * V4L2 format set |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh) |
| { |
| struct v4l2_format *f = arg; |
| int err, frame; |
| |
| err = ioctl_try_fmt(arg, cam); |
| if(err != 0) |
| return err; |
| |
| /* Ensure that only this process can change the format. */ |
| err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD); |
| if(err != 0) { |
| return err; |
| } |
| |
| cam->pixelformat = f->fmt.pix.pixelformat; |
| |
| /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle |
| * the missing Huffman table properly. */ |
| cam->params.compression.inhibit_htables = 0; |
| /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/ |
| |
| /* we set the video window to something smaller or equal to what |
| * is requested by the user??? |
| */ |
| DBG("Requested width = %d, height = %d\n", |
| f->fmt.pix.width, f->fmt.pix.height); |
| if (f->fmt.pix.width != cam->vw.width || |
| f->fmt.pix.height != cam->vw.height) { |
| cam->vw.width = f->fmt.pix.width; |
| cam->vw.height = f->fmt.pix.height; |
| cam->params.roi.width = f->fmt.pix.width; |
| cam->params.roi.height = f->fmt.pix.height; |
| cpia2_set_format(cam); |
| } |
| |
| for (frame = 0; frame < cam->num_frames; ++frame) { |
| if (cam->buffers[frame].status == FRAME_READING) |
| if ((err = sync(cam, frame)) < 0) |
| return err; |
| |
| cam->buffers[frame].status = FRAME_EMPTY; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_get_fmt |
| * |
| * V4L2 format get |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_get_fmt(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_format *f = arg; |
| |
| if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| f->fmt.pix.width = cam->vw.width; |
| f->fmt.pix.height = cam->vw.height; |
| f->fmt.pix.pixelformat = cam->pixelformat; |
| f->fmt.pix.field = V4L2_FIELD_NONE; |
| f->fmt.pix.bytesperline = 0; |
| f->fmt.pix.sizeimage = cam->frame_size; |
| f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; |
| f->fmt.pix.priv = 0; |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_cropcap |
| * |
| * V4L2 query cropping capabilities |
| * NOTE: cropping is currently disabled |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_cropcap(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_cropcap *c = arg; |
| |
| if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| return -EINVAL; |
| |
| c->bounds.left = 0; |
| c->bounds.top = 0; |
| c->bounds.width = cam->vw.width; |
| c->bounds.height = cam->vw.height; |
| c->defrect.left = 0; |
| c->defrect.top = 0; |
| c->defrect.width = cam->vw.width; |
| c->defrect.height = cam->vw.height; |
| c->pixelaspect.numerator = 1; |
| c->pixelaspect.denominator = 1; |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_queryctrl |
| * |
| * V4L2 query possible control variables |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_queryctrl(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_queryctrl *c = arg; |
| int i; |
| |
| for(i=0; i<NUM_CONTROLS; ++i) { |
| if(c->id == controls[i].id) { |
| memcpy(c, controls+i, sizeof(*c)); |
| break; |
| } |
| } |
| |
| if(i == NUM_CONTROLS) |
| return -EINVAL; |
| |
| /* Some devices have additional limitations */ |
| switch(c->id) { |
| case V4L2_CID_BRIGHTNESS: |
| /*** |
| * Don't let the register be set to zero - bug in VP4 |
| * flash of full brightness |
| ***/ |
| if (cam->params.pnp_id.device_type == DEVICE_STV_672) |
| c->minimum = 1; |
| break; |
| case V4L2_CID_VFLIP: |
| // VP5 Only |
| if(cam->params.pnp_id.device_type == DEVICE_STV_672) |
| c->flags |= V4L2_CTRL_FLAG_DISABLED; |
| break; |
| case CPIA2_CID_FRAMERATE: |
| if(cam->params.pnp_id.device_type == DEVICE_STV_672 && |
| cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){ |
| // Maximum 15fps |
| int i; |
| for(i=0; i<c->maximum; ++i) { |
| if(framerate_controls[i].value == |
| CPIA2_VP_FRAMERATE_15) { |
| c->maximum = i; |
| c->default_value = i; |
| } |
| } |
| } |
| break; |
| case CPIA2_CID_FLICKER_MODE: |
| // Flicker control only valid for 672. |
| if(cam->params.pnp_id.device_type != DEVICE_STV_672) |
| c->flags |= V4L2_CTRL_FLAG_DISABLED; |
| break; |
| case CPIA2_CID_LIGHTS: |
| // Light control only valid for the QX5 Microscope. |
| if(cam->params.pnp_id.product != 0x151) |
| c->flags |= V4L2_CTRL_FLAG_DISABLED; |
| break; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_querymenu |
| * |
| * V4L2 query possible control variables |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_querymenu(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_querymenu *m = arg; |
| |
| memset(m->name, 0, sizeof(m->name)); |
| m->reserved = 0; |
| |
| switch(m->id) { |
| case CPIA2_CID_FLICKER_MODE: |
| if(m->index < 0 || m->index >= NUM_FLICKER_CONTROLS) |
| return -EINVAL; |
| |
| strcpy(m->name, flicker_controls[m->index].name); |
| break; |
| case CPIA2_CID_FRAMERATE: |
| { |
| int maximum = NUM_FRAMERATE_CONTROLS - 1; |
| if(cam->params.pnp_id.device_type == DEVICE_STV_672 && |
| cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){ |
| // Maximum 15fps |
| int i; |
| for(i=0; i<maximum; ++i) { |
| if(framerate_controls[i].value == |
| CPIA2_VP_FRAMERATE_15) |
| maximum = i; |
| } |
| } |
| if(m->index < 0 || m->index > maximum) |
| return -EINVAL; |
| |
| strcpy(m->name, framerate_controls[m->index].name); |
| break; |
| } |
| case CPIA2_CID_LIGHTS: |
| if(m->index < 0 || m->index >= NUM_LIGHTS_CONTROLS) |
| return -EINVAL; |
| |
| strcpy(m->name, lights_controls[m->index].name); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_g_ctrl |
| * |
| * V4L2 get the value of a control variable |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_g_ctrl(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_control *c = arg; |
| |
| switch(c->id) { |
| case V4L2_CID_BRIGHTNESS: |
| cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS, |
| TRANSFER_READ, 0); |
| c->value = cam->params.color_params.brightness; |
| break; |
| case V4L2_CID_CONTRAST: |
| cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST, |
| TRANSFER_READ, 0); |
| c->value = cam->params.color_params.contrast; |
| break; |
| case V4L2_CID_SATURATION: |
| cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION, |
| TRANSFER_READ, 0); |
| c->value = cam->params.color_params.saturation; |
| break; |
| case V4L2_CID_HFLIP: |
| cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, |
| TRANSFER_READ, 0); |
| c->value = (cam->params.vp_params.user_effects & |
| CPIA2_VP_USER_EFFECTS_MIRROR) != 0; |
| break; |
| case V4L2_CID_VFLIP: |
| cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, |
| TRANSFER_READ, 0); |
| c->value = (cam->params.vp_params.user_effects & |
| CPIA2_VP_USER_EFFECTS_FLIP) != 0; |
| break; |
| case CPIA2_CID_TARGET_KB: |
| c->value = cam->params.vc_params.target_kb; |
| break; |
| case CPIA2_CID_GPIO: |
| cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA, |
| TRANSFER_READ, 0); |
| c->value = cam->params.vp_params.gpio_data; |
| break; |
| case CPIA2_CID_FLICKER_MODE: |
| { |
| int i, mode; |
| cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES, |
| TRANSFER_READ, 0); |
| if(cam->params.flicker_control.cam_register & |
| CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) { |
| mode = NEVER_FLICKER; |
| } else { |
| if(cam->params.flicker_control.cam_register & |
| CPIA2_VP_FLICKER_MODES_50HZ) { |
| mode = FLICKER_50; |
| } else { |
| mode = FLICKER_60; |
| } |
| } |
| for(i=0; i<NUM_FLICKER_CONTROLS; i++) { |
| if(flicker_controls[i].value == mode) { |
| c->value = i; |
| break; |
| } |
| } |
| if(i == NUM_FLICKER_CONTROLS) |
| return -EINVAL; |
| break; |
| } |
| case CPIA2_CID_FRAMERATE: |
| { |
| int maximum = NUM_FRAMERATE_CONTROLS - 1; |
| int i; |
| for(i=0; i<= maximum; i++) { |
| if(cam->params.vp_params.frame_rate == |
| framerate_controls[i].value) |
| break; |
| } |
| if(i > maximum) |
| return -EINVAL; |
| c->value = i; |
| break; |
| } |
| case CPIA2_CID_USB_ALT: |
| c->value = cam->params.camera_state.stream_mode; |
| break; |
| case CPIA2_CID_LIGHTS: |
| { |
| int i; |
| cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA, |
| TRANSFER_READ, 0); |
| for(i=0; i<NUM_LIGHTS_CONTROLS; i++) { |
| if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) == |
| lights_controls[i].value) { |
| break; |
| } |
| } |
| if(i == NUM_LIGHTS_CONTROLS) |
| return -EINVAL; |
| c->value = i; |
| break; |
| } |
| case CPIA2_CID_RESET_CAMERA: |
| return -EINVAL; |
| default: |
| return -EINVAL; |
| } |
| |
| DBG("Get control id:%d, value:%d\n", c->id, c->value); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_s_ctrl |
| * |
| * V4L2 set the value of a control variable |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_s_ctrl(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_control *c = arg; |
| int i; |
| int retval = 0; |
| |
| DBG("Set control id:%d, value:%d\n", c->id, c->value); |
| |
| /* Check that the value is in range */ |
| for(i=0; i<NUM_CONTROLS; i++) { |
| if(c->id == controls[i].id) { |
| if(c->value < controls[i].minimum || |
| c->value > controls[i].maximum) { |
| return -EINVAL; |
| } |
| break; |
| } |
| } |
| if(i == NUM_CONTROLS) |
| return -EINVAL; |
| |
| switch(c->id) { |
| case V4L2_CID_BRIGHTNESS: |
| cpia2_set_brightness(cam, c->value); |
| break; |
| case V4L2_CID_CONTRAST: |
| cpia2_set_contrast(cam, c->value); |
| break; |
| case V4L2_CID_SATURATION: |
| cpia2_set_saturation(cam, c->value); |
| break; |
| case V4L2_CID_HFLIP: |
| cpia2_set_property_mirror(cam, c->value); |
| break; |
| case V4L2_CID_VFLIP: |
| cpia2_set_property_flip(cam, c->value); |
| break; |
| case CPIA2_CID_TARGET_KB: |
| retval = cpia2_set_target_kb(cam, c->value); |
| break; |
| case CPIA2_CID_GPIO: |
| retval = cpia2_set_gpio(cam, c->value); |
| break; |
| case CPIA2_CID_FLICKER_MODE: |
| retval = cpia2_set_flicker_mode(cam, |
| flicker_controls[c->value].value); |
| break; |
| case CPIA2_CID_FRAMERATE: |
| retval = cpia2_set_fps(cam, framerate_controls[c->value].value); |
| break; |
| case CPIA2_CID_USB_ALT: |
| retval = cpia2_usb_change_streaming_alternate(cam, c->value); |
| break; |
| case CPIA2_CID_LIGHTS: |
| retval = cpia2_set_gpio(cam, lights_controls[c->value].value); |
| break; |
| case CPIA2_CID_RESET_CAMERA: |
| cpia2_usb_stream_pause(cam); |
| cpia2_reset_camera(cam); |
| cpia2_usb_stream_resume(cam); |
| break; |
| default: |
| retval = -EINVAL; |
| } |
| |
| return retval; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_g_jpegcomp |
| * |
| * V4L2 get the JPEG compression parameters |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_g_jpegcomp(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_jpegcompression *parms = arg; |
| |
| memset(parms, 0, sizeof(*parms)); |
| |
| parms->quality = 80; // TODO: Can this be made meaningful? |
| |
| parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI; |
| if(!cam->params.compression.inhibit_htables) { |
| parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT; |
| } |
| |
| parms->APPn = cam->APPn; |
| parms->APP_len = cam->APP_len; |
| if(cam->APP_len > 0) { |
| memcpy(parms->APP_data, cam->APP_data, cam->APP_len); |
| parms->jpeg_markers |= V4L2_JPEG_MARKER_APP; |
| } |
| |
| parms->COM_len = cam->COM_len; |
| if(cam->COM_len > 0) { |
| memcpy(parms->COM_data, cam->COM_data, cam->COM_len); |
| parms->jpeg_markers |= JPEG_MARKER_COM; |
| } |
| |
| DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n", |
| parms->APP_len, parms->COM_len); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_s_jpegcomp |
| * |
| * V4L2 set the JPEG compression parameters |
| * NOTE: quality and some jpeg_markers are ignored. |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_s_jpegcomp(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_jpegcompression *parms = arg; |
| |
| DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n", |
| parms->APP_len, parms->COM_len); |
| |
| cam->params.compression.inhibit_htables = |
| !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT); |
| |
| if(parms->APP_len != 0) { |
| if(parms->APP_len > 0 && |
| parms->APP_len <= sizeof(cam->APP_data) && |
| parms->APPn >= 0 && parms->APPn <= 15) { |
| cam->APPn = parms->APPn; |
| cam->APP_len = parms->APP_len; |
| memcpy(cam->APP_data, parms->APP_data, parms->APP_len); |
| } else { |
| LOG("Bad APPn Params n=%d len=%d\n", |
| parms->APPn, parms->APP_len); |
| return -EINVAL; |
| } |
| } else { |
| cam->APP_len = 0; |
| } |
| |
| if(parms->COM_len != 0) { |
| if(parms->COM_len > 0 && |
| parms->COM_len <= sizeof(cam->COM_data)) { |
| cam->COM_len = parms->COM_len; |
| memcpy(cam->COM_data, parms->COM_data, parms->COM_len); |
| } else { |
| LOG("Bad COM_len=%d\n", parms->COM_len); |
| return -EINVAL; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_reqbufs |
| * |
| * V4L2 Initiate memory mapping. |
| * NOTE: The user's request is ignored. For now the buffers are fixed. |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_reqbufs(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_requestbuffers *req = arg; |
| |
| if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| req->memory != V4L2_MEMORY_MMAP) |
| return -EINVAL; |
| |
| DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames); |
| req->count = cam->num_frames; |
| memset(&req->reserved, 0, sizeof(req->reserved)); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_querybuf |
| * |
| * V4L2 Query memory buffer status. |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_querybuf(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_buffer *buf = arg; |
| |
| if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| buf->index > cam->num_frames) |
| return -EINVAL; |
| |
| buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer; |
| buf->length = cam->frame_size; |
| |
| buf->memory = V4L2_MEMORY_MMAP; |
| |
| if(cam->mmapped) |
| buf->flags = V4L2_BUF_FLAG_MAPPED; |
| else |
| buf->flags = 0; |
| |
| switch (cam->buffers[buf->index].status) { |
| case FRAME_EMPTY: |
| case FRAME_ERROR: |
| case FRAME_READING: |
| buf->bytesused = 0; |
| buf->flags = V4L2_BUF_FLAG_QUEUED; |
| break; |
| case FRAME_READY: |
| buf->bytesused = cam->buffers[buf->index].length; |
| buf->timestamp = cam->buffers[buf->index].timestamp; |
| buf->sequence = cam->buffers[buf->index].seq; |
| buf->flags = V4L2_BUF_FLAG_DONE; |
| break; |
| } |
| |
| DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n", |
| buf->index, buf->m.offset, buf->flags, buf->sequence, |
| buf->bytesused); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_qbuf |
| * |
| * V4L2 User is freeing buffer |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_qbuf(void *arg,struct camera_data *cam) |
| { |
| struct v4l2_buffer *buf = arg; |
| |
| if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| buf->memory != V4L2_MEMORY_MMAP || |
| buf->index > cam->num_frames) |
| return -EINVAL; |
| |
| DBG("QBUF #%d\n", buf->index); |
| |
| if(cam->buffers[buf->index].status == FRAME_READY) |
| cam->buffers[buf->index].status = FRAME_EMPTY; |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * find_earliest_filled_buffer |
| * |
| * Helper for ioctl_dqbuf. Find the next ready buffer. |
| * |
| *****************************************************************************/ |
| |
| static int find_earliest_filled_buffer(struct camera_data *cam) |
| { |
| int i; |
| int found = -1; |
| for (i=0; i<cam->num_frames; i++) { |
| if(cam->buffers[i].status == FRAME_READY) { |
| if(found < 0) { |
| found = i; |
| } else { |
| /* find which buffer is earlier */ |
| struct timeval *tv1, *tv2; |
| tv1 = &cam->buffers[i].timestamp; |
| tv2 = &cam->buffers[found].timestamp; |
| if(tv1->tv_sec < tv2->tv_sec || |
| (tv1->tv_sec == tv2->tv_sec && |
| tv1->tv_usec < tv2->tv_usec)) |
| found = i; |
| } |
| } |
| } |
| return found; |
| } |
| |
| /****************************************************************************** |
| * |
| * ioctl_dqbuf |
| * |
| * V4L2 User is asking for a filled buffer. |
| * |
| *****************************************************************************/ |
| |
| static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file) |
| { |
| struct v4l2_buffer *buf = arg; |
| int frame; |
| |
| if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
| buf->memory != V4L2_MEMORY_MMAP) |
| return -EINVAL; |
| |
| frame = find_earliest_filled_buffer(cam); |
| |
| if(frame < 0 && file->f_flags&O_NONBLOCK) |
| return -EAGAIN; |
| |
| if(frame < 0) { |
| /* Wait for a frame to become available */ |
| struct framebuf *cb=cam->curbuff; |
| mutex_unlock(&cam->busy_lock); |
| wait_event_interruptible(cam->wq_stream, |
| !cam->present || |
| (cb=cam->curbuff)->status == FRAME_READY); |
| mutex_lock(&cam->busy_lock); |
| if (signal_pending(current)) |
| return -ERESTARTSYS; |
| if(!cam->present) |
| return -ENOTTY; |
| frame = cb->num; |
| } |
| |
| |
| buf->index = frame; |
| buf->bytesused = cam->buffers[buf->index].length; |
| buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE; |
| buf->field = V4L2_FIELD_NONE; |
| buf->timestamp = cam->buffers[buf->index].timestamp; |
| buf->sequence = cam->buffers[buf->index].seq; |
| buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer; |
| buf->length = cam->frame_size; |
| buf->input = 0; |
| buf->reserved = 0; |
| memset(&buf->timecode, 0, sizeof(buf->timecode)); |
| |
| DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index, |
| cam->buffers[buf->index].status, buf->sequence, buf->bytesused); |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * cpia2_ioctl |
| * |
| *****************************************************************************/ |
| static int cpia2_do_ioctl(struct inode *inode, struct file *file, |
| unsigned int ioctl_nr, void *arg) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct camera_data *cam = video_get_drvdata(dev); |
| int retval = 0; |
| |
| if (!cam) |
| return -ENOTTY; |
| |
| /* make this _really_ smp-safe */ |
| if (mutex_lock_interruptible(&cam->busy_lock)) |
| return -ERESTARTSYS; |
| |
| if (!cam->present) { |
| mutex_unlock(&cam->busy_lock); |
| return -ENODEV; |
| } |
| |
| /* Priority check */ |
| switch (ioctl_nr) { |
| case VIDIOCSWIN: |
| case VIDIOCMCAPTURE: |
| case VIDIOC_S_FMT: |
| { |
| struct cpia2_fh *fh = file->private_data; |
| retval = v4l2_prio_check(&cam->prio, &fh->prio); |
| if(retval) { |
| mutex_unlock(&cam->busy_lock); |
| return retval; |
| } |
| break; |
| } |
| case VIDIOCGMBUF: |
| case VIDIOCSYNC: |
| { |
| struct cpia2_fh *fh = file->private_data; |
| if(fh->prio != V4L2_PRIORITY_RECORD) { |
| mutex_unlock(&cam->busy_lock); |
| return -EBUSY; |
| } |
| break; |
| } |
| default: |
| break; |
| } |
| |
| switch (ioctl_nr) { |
| case VIDIOCGCAP: /* query capabilities */ |
| retval = ioctl_cap_query(arg, cam); |
| break; |
| |
| case VIDIOCGCHAN: /* get video source - we are a camera, nothing else */ |
| retval = ioctl_get_channel(arg); |
| break; |
| case VIDIOCSCHAN: /* set video source - we are a camera, nothing else */ |
| retval = ioctl_set_channel(arg); |
| break; |
| case VIDIOCGPICT: /* image properties */ |
| memcpy(arg, &cam->vp, sizeof(struct video_picture)); |
| break; |
| case VIDIOCSPICT: |
| retval = ioctl_set_image_prop(arg, cam); |
| break; |
| case VIDIOCGWIN: /* get/set capture window */ |
| memcpy(arg, &cam->vw, sizeof(struct video_window)); |
| break; |
| case VIDIOCSWIN: |
| retval = ioctl_set_window_size(arg, cam, file->private_data); |
| break; |
| case VIDIOCGMBUF: /* mmap interface */ |
| retval = ioctl_get_mbuf(arg, cam); |
| break; |
| case VIDIOCMCAPTURE: |
| retval = ioctl_mcapture(arg, cam, file->private_data); |
| break; |
| case VIDIOCSYNC: |
| retval = ioctl_sync(arg, cam); |
| break; |
| /* pointless to implement overlay with this camera */ |
| case VIDIOCCAPTURE: |
| case VIDIOCGFBUF: |
| case VIDIOCSFBUF: |
| case VIDIOCKEY: |
| retval = -EINVAL; |
| break; |
| |
| /* tuner interface - we have none */ |
| case VIDIOCGTUNER: |
| case VIDIOCSTUNER: |
| case VIDIOCGFREQ: |
| case VIDIOCSFREQ: |
| retval = -EINVAL; |
| break; |
| |
| /* audio interface - we have none */ |
| case VIDIOCGAUDIO: |
| case VIDIOCSAUDIO: |
| retval = -EINVAL; |
| break; |
| |
| /* CPIA2 extension to Video4Linux API */ |
| case CPIA2_IOC_SET_GPIO: |
| retval = ioctl_set_gpio(arg, cam); |
| break; |
| case VIDIOC_QUERYCAP: |
| retval = ioctl_querycap(arg,cam); |
| break; |
| |
| case VIDIOC_ENUMINPUT: |
| case VIDIOC_G_INPUT: |
| case VIDIOC_S_INPUT: |
| retval = ioctl_input(ioctl_nr, arg,cam); |
| break; |
| |
| case VIDIOC_ENUM_FMT: |
| retval = ioctl_enum_fmt(arg,cam); |
| break; |
| case VIDIOC_TRY_FMT: |
| retval = ioctl_try_fmt(arg,cam); |
| break; |
| case VIDIOC_G_FMT: |
| retval = ioctl_get_fmt(arg,cam); |
| break; |
| case VIDIOC_S_FMT: |
| retval = ioctl_set_fmt(arg,cam,file->private_data); |
| break; |
| |
| case VIDIOC_CROPCAP: |
| retval = ioctl_cropcap(arg,cam); |
| break; |
| case VIDIOC_G_CROP: |
| case VIDIOC_S_CROP: |
| // TODO: I think cropping can be implemented - SJB |
| retval = -EINVAL; |
| break; |
| |
| case VIDIOC_QUERYCTRL: |
| retval = ioctl_queryctrl(arg,cam); |
| break; |
| case VIDIOC_QUERYMENU: |
| retval = ioctl_querymenu(arg,cam); |
| break; |
| case VIDIOC_G_CTRL: |
| retval = ioctl_g_ctrl(arg,cam); |
| break; |
| case VIDIOC_S_CTRL: |
| retval = ioctl_s_ctrl(arg,cam); |
| break; |
| |
| case VIDIOC_G_JPEGCOMP: |
| retval = ioctl_g_jpegcomp(arg,cam); |
| break; |
| case VIDIOC_S_JPEGCOMP: |
| retval = ioctl_s_jpegcomp(arg,cam); |
| break; |
| |
| case VIDIOC_G_PRIORITY: |
| { |
| struct cpia2_fh *fh = file->private_data; |
| *(enum v4l2_priority*)arg = fh->prio; |
| break; |
| } |
| case VIDIOC_S_PRIORITY: |
| { |
| struct cpia2_fh *fh = file->private_data; |
| enum v4l2_priority prio; |
| prio = *(enum v4l2_priority*)arg; |
| if(cam->streaming && |
| prio != fh->prio && |
| fh->prio == V4L2_PRIORITY_RECORD) { |
| /* Can't drop record priority while streaming */ |
| retval = -EBUSY; |
| } else if(prio == V4L2_PRIORITY_RECORD && |
| prio != fh->prio && |
| v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD) { |
| /* Only one program can record at a time */ |
| retval = -EBUSY; |
| } else { |
| retval = v4l2_prio_change(&cam->prio, &fh->prio, prio); |
| } |
| break; |
| } |
| |
| case VIDIOC_REQBUFS: |
| retval = ioctl_reqbufs(arg,cam); |
| break; |
| case VIDIOC_QUERYBUF: |
| retval = ioctl_querybuf(arg,cam); |
| break; |
| case VIDIOC_QBUF: |
| retval = ioctl_qbuf(arg,cam); |
| break; |
| case VIDIOC_DQBUF: |
| retval = ioctl_dqbuf(arg,cam,file); |
| break; |
| case VIDIOC_STREAMON: |
| { |
| int type; |
| DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming); |
| type = *(int*)arg; |
| if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| retval = -EINVAL; |
| |
| if(!cam->streaming) { |
| retval = cpia2_usb_stream_start(cam, |
| cam->params.camera_state.stream_mode); |
| } else { |
| retval = -EINVAL; |
| } |
| |
| break; |
| } |
| case VIDIOC_STREAMOFF: |
| { |
| int type; |
| DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming); |
| type = *(int*)arg; |
| if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
| retval = -EINVAL; |
| |
| if(cam->streaming) { |
| retval = cpia2_usb_stream_stop(cam); |
| } else { |
| retval = -EINVAL; |
| } |
| |
| break; |
| } |
| |
| case VIDIOC_ENUMOUTPUT: |
| case VIDIOC_G_OUTPUT: |
| case VIDIOC_S_OUTPUT: |
| case VIDIOC_G_MODULATOR: |
| case VIDIOC_S_MODULATOR: |
| |
| case VIDIOC_ENUMAUDIO: |
| case VIDIOC_G_AUDIO: |
| case VIDIOC_S_AUDIO: |
| |
| case VIDIOC_ENUMAUDOUT: |
| case VIDIOC_G_AUDOUT: |
| case VIDIOC_S_AUDOUT: |
| |
| case VIDIOC_ENUMSTD: |
| case VIDIOC_QUERYSTD: |
| case VIDIOC_G_STD: |
| case VIDIOC_S_STD: |
| |
| case VIDIOC_G_TUNER: |
| case VIDIOC_S_TUNER: |
| case VIDIOC_G_FREQUENCY: |
| case VIDIOC_S_FREQUENCY: |
| |
| case VIDIOC_OVERLAY: |
| case VIDIOC_G_FBUF: |
| case VIDIOC_S_FBUF: |
| |
| case VIDIOC_G_PARM: |
| case VIDIOC_S_PARM: |
| retval = -EINVAL; |
| break; |
| default: |
| retval = -ENOIOCTLCMD; |
| break; |
| } |
| |
| mutex_unlock(&cam->busy_lock); |
| return retval; |
| } |
| |
| static int cpia2_ioctl(struct inode *inode, struct file *file, |
| unsigned int ioctl_nr, unsigned long iarg) |
| { |
| return video_usercopy(inode, file, ioctl_nr, iarg, cpia2_do_ioctl); |
| } |
| |
| /****************************************************************************** |
| * |
| * cpia2_mmap |
| * |
| *****************************************************************************/ |
| static int cpia2_mmap(struct file *file, struct vm_area_struct *area) |
| { |
| int retval; |
| struct video_device *dev = video_devdata(file); |
| struct camera_data *cam = video_get_drvdata(dev); |
| |
| /* Priority check */ |
| struct cpia2_fh *fh = file->private_data; |
| if(fh->prio != V4L2_PRIORITY_RECORD) { |
| return -EBUSY; |
| } |
| |
| retval = cpia2_remap_buffer(cam, area); |
| |
| if(!retval) |
| fh->mmapped = 1; |
| return retval; |
| } |
| |
| /****************************************************************************** |
| * |
| * reset_camera_struct_v4l |
| * |
| * Sets all values to the defaults |
| *****************************************************************************/ |
| static void reset_camera_struct_v4l(struct camera_data *cam) |
| { |
| /*** |
| * Fill in the v4l structures. video_cap is filled in inside the VIDIOCCAP |
| * Ioctl. Here, just do the window and picture stucts. |
| ***/ |
| cam->vp.palette = (u16) VIDEO_PALETTE_RGB24; /* Is this right? */ |
| cam->vp.brightness = (u16) cam->params.color_params.brightness * 256; |
| cam->vp.colour = (u16) cam->params.color_params.saturation * 256; |
| cam->vp.contrast = (u16) cam->params.color_params.contrast * 256; |
| |
| cam->vw.x = 0; |
| cam->vw.y = 0; |
| cam->vw.width = cam->params.roi.width; |
| cam->vw.height = cam->params.roi.height; |
| cam->vw.flags = 0; |
| cam->vw.clipcount = 0; |
| |
| cam->frame_size = buffer_size; |
| cam->num_frames = num_buffers; |
| |
| /* FlickerModes */ |
| cam->params.flicker_control.flicker_mode_req = flicker_mode; |
| cam->params.flicker_control.mains_frequency = flicker_freq; |
| |
| /* streamMode */ |
| cam->params.camera_state.stream_mode = alternate; |
| |
| cam->pixelformat = V4L2_PIX_FMT_JPEG; |
| v4l2_prio_init(&cam->prio); |
| return; |
| } |
| |
| /*** |
| * The v4l video device structure initialized for this device |
| ***/ |
| static const struct file_operations fops_template = { |
| .owner = THIS_MODULE, |
| .open = cpia2_open, |
| .release = cpia2_close, |
| .read = cpia2_v4l_read, |
| .poll = cpia2_v4l_poll, |
| .ioctl = cpia2_ioctl, |
| .llseek = no_llseek, |
| .compat_ioctl = v4l_compat_ioctl32, |
| .mmap = cpia2_mmap, |
| }; |
| |
| static struct video_device cpia2_template = { |
| /* I could not find any place for the old .initialize initializer?? */ |
| .owner= THIS_MODULE, |
| .name= "CPiA2 Camera", |
| .type= VID_TYPE_CAPTURE, |
| .type2 = V4L2_CAP_VIDEO_CAPTURE | |
| V4L2_CAP_STREAMING, |
| .hardware= VID_HARDWARE_CPIA2, |
| .minor= -1, |
| .fops= &fops_template, |
| .release= video_device_release, |
| }; |
| |
| /****************************************************************************** |
| * |
| * cpia2_register_camera |
| * |
| *****************************************************************************/ |
| int cpia2_register_camera(struct camera_data *cam) |
| { |
| cam->vdev = video_device_alloc(); |
| if(!cam->vdev) |
| return -ENOMEM; |
| |
| memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template)); |
| video_set_drvdata(cam->vdev, cam); |
| |
| reset_camera_struct_v4l(cam); |
| |
| /* register v4l device */ |
| if (video_register_device |
| (cam->vdev, VFL_TYPE_GRABBER, video_nr) == -1) { |
| ERR("video_register_device failed\n"); |
| video_device_release(cam->vdev); |
| return -ENODEV; |
| } |
| |
| return 0; |
| } |
| |
| /****************************************************************************** |
| * |
| * cpia2_unregister_camera |
| * |
| *****************************************************************************/ |
| void cpia2_unregister_camera(struct camera_data *cam) |
| { |
| if (!cam->open_count) { |
| video_unregister_device(cam->vdev); |
| } else { |
| LOG("/dev/video%d removed while open, " |
| "deferring video_unregister_device\n", |
| cam->vdev->minor); |
| } |
| } |
| |
| /****************************************************************************** |
| * |
| * check_parameters |
| * |
| * Make sure that all user-supplied parameters are sensible |
| *****************************************************************************/ |
| static void __init check_parameters(void) |
| { |
| if(buffer_size < PAGE_SIZE) { |
| buffer_size = PAGE_SIZE; |
| LOG("buffer_size too small, setting to %d\n", buffer_size); |
| } else if(buffer_size > 1024*1024) { |
| /* arbitrary upper limiit */ |
| buffer_size = 1024*1024; |
| LOG("buffer_size ridiculously large, setting to %d\n", |
| buffer_size); |
| } else { |
| buffer_size += PAGE_SIZE-1; |
| buffer_size &= ~(PAGE_SIZE-1); |
| } |
| |
| if(num_buffers < 1) { |
| num_buffers = 1; |
| LOG("num_buffers too small, setting to %d\n", num_buffers); |
| } else if(num_buffers > VIDEO_MAX_FRAME) { |
| num_buffers = VIDEO_MAX_FRAME; |
| LOG("num_buffers too large, setting to %d\n", num_buffers); |
| } |
| |
| if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) { |
| alternate = DEFAULT_ALT; |
| LOG("alternate specified is invalid, using %d\n", alternate); |
| } |
| |
| if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) { |
| flicker_mode = NEVER_FLICKER; |
| LOG("Flicker mode specified is invalid, using %d\n", |
| flicker_mode); |
| } |
| |
| if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) { |
| flicker_freq = FLICKER_60; |
| LOG("Flicker mode specified is invalid, using %d\n", |
| flicker_freq); |
| } |
| |
| if(video_nr < -1 || video_nr > 64) { |
| video_nr = -1; |
| LOG("invalid video_nr specified, must be -1 to 64\n"); |
| } |
| |
| DBG("Using %d buffers, each %d bytes, alternate=%d\n", |
| num_buffers, buffer_size, alternate); |
| } |
| |
| /************ Module Stuff ***************/ |
| |
| |
| /****************************************************************************** |
| * |
| * cpia2_init/module_init |
| * |
| *****************************************************************************/ |
| static int __init cpia2_init(void) |
| { |
| LOG("%s v%d.%d.%d\n", |
| ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER); |
| check_parameters(); |
| cpia2_usb_init(); |
| return 0; |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * cpia2_exit/module_exit |
| * |
| *****************************************************************************/ |
| static void __exit cpia2_exit(void) |
| { |
| cpia2_usb_cleanup(); |
| schedule_timeout(2 * HZ); |
| } |
| |
| module_init(cpia2_init); |
| module_exit(cpia2_exit); |
| |