1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1507 lines
42 KiB
C
1507 lines
42 KiB
C
/*
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* STV0680 USB Camera Driver, by Kevin Sisson (kjsisson@bellsouth.net)
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*
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* Thanks to STMicroelectronics for information on the usb commands, and
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* to Steve Miller at STM for his help and encouragement while I was
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* writing this driver.
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*
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* This driver is based heavily on the
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* Endpoints (formerly known as AOX) se401 USB Camera Driver
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* Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org)
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*
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* Still somewhat based on the Linux ov511 driver.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* History:
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* ver 0.1 October, 2001. Initial attempt.
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*
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* ver 0.2 November, 2001. Fixed asbility to resize, added brightness
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* function, made more stable (?)
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*
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* ver 0.21 Nov, 2001. Added gamma correction and white balance,
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* due to Alexander Schwartz. Still trying to
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* improve stablility. Moved stuff into stv680.h
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*
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* ver 0.22 Nov, 2001. Added sharpen function (by Michael Sweet,
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* mike@easysw.com) from GIMP, also used in pencam.
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* Simple, fast, good integer math routine.
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*
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* ver 0.23 Dec, 2001 (gkh)
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* Took out sharpen function, ran code through
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* Lindent, and did other minor tweaks to get
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* things to work properly with 2.5.1
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*
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* ver 0.24 Jan, 2002 (kjs)
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* Fixed the problem with webcam crashing after
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* two pictures. Changed the way pic is halved to
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* improve quality. Got rid of green line around
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* frame. Fix brightness reset when changing size
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* bug. Adjusted gamma filters slightly.
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*
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* ver 0.25 Jan, 2002 (kjs)
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* Fixed a bug in which the driver sometimes attempted
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* to set to a non-supported size. This allowed
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* gnomemeeting to work.
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* Fixed proc entry removal bug.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/pagemap.h>
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#include <linux/errno.h>
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#include <linux/videodev.h>
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#include <linux/usb.h>
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#include "stv680.h"
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static int video_nr = -1;
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static int swapRGB = 0; /* default for auto sleect */
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static int swapRGB_on = 0; /* default to allow auto select; -1=swap never, +1= swap always */
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static unsigned int debug = 0;
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#define PDEBUG(level, fmt, args...) \
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do { \
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if (debug >= level) \
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info("[%s:%d] " fmt, __FUNCTION__, __LINE__ , ## args); \
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} while (0)
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/*
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* Version Information
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*/
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#define DRIVER_VERSION "v0.25"
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#define DRIVER_AUTHOR "Kevin Sisson <kjsisson@bellsouth.net>"
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#define DRIVER_DESC "STV0680 USB Camera Driver"
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MODULE_AUTHOR (DRIVER_AUTHOR);
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MODULE_DESCRIPTION (DRIVER_DESC);
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MODULE_LICENSE ("GPL");
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module_param(debug, int, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC (debug, "Debug enabled or not");
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module_param(swapRGB_on, int, 0);
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MODULE_PARM_DESC (swapRGB_on, "Red/blue swap: 1=always, 0=auto, -1=never");
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module_param(video_nr, int, 0);
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/********************************************************************
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*
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* Memory management
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*
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* This is a shameless copy from the USB-cpia driver (linux kernel
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* version 2.3.29 or so, I have no idea what this code actually does ;).
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* Actually it seems to be a copy of a shameless copy of the bttv-driver.
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* Or that is a copy of a shameless copy of ... (To the powers: is there
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* no generic kernel-function to do this sort of stuff?)
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*
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* Yes, it was a shameless copy from the bttv-driver. IIRC, Alan says
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* there will be one, but apparentely not yet -jerdfelt
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*
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* So I copied it again for the ov511 driver -claudio
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*
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* Same for the se401 driver -Jeroen
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*
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* And the STV0680 driver - Kevin
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********************************************************************/
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static void *rvmalloc (unsigned long size)
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{
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void *mem;
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unsigned long adr;
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size = PAGE_ALIGN(size);
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mem = vmalloc_32 (size);
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if (!mem)
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return NULL;
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memset (mem, 0, size); /* Clear the ram out, no junk to the user */
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adr = (unsigned long) mem;
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while (size > 0) {
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SetPageReserved(vmalloc_to_page((void *)adr));
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adr += PAGE_SIZE;
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size -= PAGE_SIZE;
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}
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return mem;
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}
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static void rvfree (void *mem, unsigned long size)
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{
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unsigned long adr;
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if (!mem)
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return;
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adr = (unsigned long) mem;
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while ((long) size > 0) {
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ClearPageReserved(vmalloc_to_page((void *)adr));
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adr += PAGE_SIZE;
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size -= PAGE_SIZE;
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}
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vfree (mem);
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}
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/*********************************************************************
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* pencam read/write functions
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********************************************************************/
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static int stv_sndctrl (int set, struct usb_stv *stv680, unsigned short req, unsigned short value, unsigned char *buffer, int size)
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{
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int ret = -1;
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switch (set) {
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case 0: /* 0xc1 */
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ret = usb_control_msg (stv680->udev,
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usb_rcvctrlpipe (stv680->udev, 0),
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req,
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(USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT),
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value, 0, buffer, size, PENCAM_TIMEOUT);
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break;
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case 1: /* 0x41 */
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ret = usb_control_msg (stv680->udev,
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usb_sndctrlpipe (stv680->udev, 0),
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req,
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(USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT),
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value, 0, buffer, size, PENCAM_TIMEOUT);
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break;
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case 2: /* 0x80 */
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ret = usb_control_msg (stv680->udev,
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usb_rcvctrlpipe (stv680->udev, 0),
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req,
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(USB_DIR_IN | USB_RECIP_DEVICE),
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value, 0, buffer, size, PENCAM_TIMEOUT);
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break;
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case 3: /* 0x40 */
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ret = usb_control_msg (stv680->udev,
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usb_sndctrlpipe (stv680->udev, 0),
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req,
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(USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE),
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value, 0, buffer, size, PENCAM_TIMEOUT);
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break;
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}
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if ((ret < 0) && (req != 0x0a)) {
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PDEBUG (1, "STV(e): usb_control_msg error %i, request = 0x%x, error = %i", set, req, ret);
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}
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return ret;
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}
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static int stv_set_config (struct usb_stv *dev, int configuration, int interface, int alternate)
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{
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if (configuration != dev->udev->actconfig->desc.bConfigurationValue
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|| usb_reset_configuration (dev->udev) < 0) {
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PDEBUG (1, "STV(e): FAILED to reset configuration %i", configuration);
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return -1;
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}
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if (usb_set_interface (dev->udev, interface, alternate) < 0) {
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PDEBUG (1, "STV(e): FAILED to set alternate interface %i", alternate);
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return -1;
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}
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return 0;
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}
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static int stv_stop_video (struct usb_stv *dev)
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{
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int i;
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unsigned char *buf;
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buf = kmalloc (40, GFP_KERNEL);
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if (buf == NULL) {
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PDEBUG (0, "STV(e): Out of (small buf) memory");
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return -1;
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}
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/* this is a high priority command; it stops all lower order commands */
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if ((i = stv_sndctrl (1, dev, 0x04, 0x0000, buf, 0x0)) < 0) {
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i = stv_sndctrl (0, dev, 0x80, 0, buf, 0x02); /* Get Last Error; 2 = busy */
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PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buf[0], buf[1]);
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} else {
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PDEBUG (1, "STV(i): Camera reset to idle mode.");
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}
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if ((i = stv_set_config (dev, 1, 0, 0)) < 0)
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PDEBUG (1, "STV(e): Reset config during exit failed");
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/* get current mode */
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buf[0] = 0xf0;
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if ((i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08)) != 0x08) /* get mode */
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PDEBUG (0, "STV(e): Stop_video: problem setting original mode");
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if (dev->origMode != buf[0]) {
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memset (buf, 0, 8);
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buf[0] = (unsigned char) dev->origMode;
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if ((i = stv_sndctrl (3, dev, 0x07, 0x0100, buf, 0x08)) != 0x08) {
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PDEBUG (0, "STV(e): Stop_video: Set_Camera_Mode failed");
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i = -1;
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}
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buf[0] = 0xf0;
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i = stv_sndctrl (0, dev, 0x87, 0, buf, 0x08);
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if ((i != 0x08) || (buf[0] != dev->origMode)) {
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PDEBUG (0, "STV(e): camera NOT set to original resolution.");
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i = -1;
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} else
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PDEBUG (0, "STV(i): Camera set to original resolution");
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}
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/* origMode */
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kfree (buf);
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return i;
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}
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static int stv_set_video_mode (struct usb_stv *dev)
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{
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int i, stop_video = 1;
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unsigned char *buf;
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buf = kmalloc (40, GFP_KERNEL);
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if (buf == NULL) {
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PDEBUG (0, "STV(e): Out of (small buf) memory");
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return -1;
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}
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if ((i = stv_set_config (dev, 1, 0, 0)) < 0) {
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kfree (buf);
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return i;
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}
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i = stv_sndctrl (2, dev, 0x06, 0x0100, buf, 0x12);
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if (!(i > 0) && (buf[8] == 0x53) && (buf[9] == 0x05)) {
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PDEBUG (1, "STV(e): Could not get descriptor 0100.");
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goto error;
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}
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/* set alternate interface 1 */
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if ((i = stv_set_config (dev, 1, 0, 1)) < 0)
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goto error;
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if ((i = stv_sndctrl (0, dev, 0x85, 0, buf, 0x10)) != 0x10)
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goto error;
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PDEBUG (1, "STV(i): Setting video mode.");
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/* Switch to Video mode: 0x0100 = VGA (640x480), 0x0000 = CIF (352x288) 0x0300 = QVGA (320x240) */
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if ((i = stv_sndctrl (1, dev, 0x09, dev->VideoMode, buf, 0x0)) < 0) {
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stop_video = 0;
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goto error;
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}
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goto exit;
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error:
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kfree (buf);
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if (stop_video == 1)
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stv_stop_video (dev);
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return -1;
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exit:
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kfree (buf);
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return 0;
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}
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static int stv_init (struct usb_stv *stv680)
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{
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int i = 0;
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unsigned char *buffer;
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unsigned long int bufsize;
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buffer = kmalloc (40, GFP_KERNEL);
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if (buffer == NULL) {
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PDEBUG (0, "STV(e): Out of (small buf) memory");
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return -1;
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}
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memset (buffer, 0, 40);
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udelay (100);
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/* set config 1, interface 0, alternate 0 */
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if ((i = stv_set_config (stv680, 1, 0, 0)) < 0) {
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kfree (buffer);
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PDEBUG (0, "STV(e): set config 1,0,0 failed");
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return -1;
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}
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/* ping camera to be sure STV0680 is present */
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if ((i = stv_sndctrl (0, stv680, 0x88, 0x5678, buffer, 0x02)) != 0x02)
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goto error;
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if ((buffer[0] != 0x56) || (buffer[1] != 0x78)) {
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PDEBUG (1, "STV(e): camera ping failed!!");
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goto error;
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}
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/* get camera descriptor */
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if ((i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x09)) != 0x09)
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goto error;
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i = stv_sndctrl (2, stv680, 0x06, 0x0200, buffer, 0x22);
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if (!(i >= 0) && (buffer[7] == 0xa0) && (buffer[8] == 0x23)) {
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PDEBUG (1, "STV(e): Could not get descriptor 0200.");
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goto error;
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}
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if ((i = stv_sndctrl (0, stv680, 0x8a, 0, buffer, 0x02)) != 0x02)
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goto error;
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if ((i = stv_sndctrl (0, stv680, 0x8b, 0, buffer, 0x24)) != 0x24)
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goto error;
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if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10)
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goto error;
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stv680->SupportedModes = buffer[7];
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i = stv680->SupportedModes;
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stv680->CIF = 0;
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stv680->VGA = 0;
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stv680->QVGA = 0;
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if (i & 1)
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stv680->CIF = 1;
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if (i & 2)
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stv680->VGA = 1;
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if (i & 8)
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stv680->QVGA = 1;
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if (stv680->SupportedModes == 0) {
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PDEBUG (0, "STV(e): There are NO supported STV680 modes!!");
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i = -1;
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goto error;
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} else {
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if (stv680->CIF)
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PDEBUG (0, "STV(i): CIF is supported");
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if (stv680->QVGA)
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PDEBUG (0, "STV(i): QVGA is supported");
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}
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/* FW rev, ASIC rev, sensor ID */
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PDEBUG (1, "STV(i): Firmware rev is %i.%i", buffer[0], buffer[1]);
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PDEBUG (1, "STV(i): ASIC rev is %i.%i", buffer[2], buffer[3]);
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PDEBUG (1, "STV(i): Sensor ID is %i", (buffer[4]*16) + (buffer[5]>>4));
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|
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/* set alternate interface 1 */
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if ((i = stv_set_config (stv680, 1, 0, 1)) < 0)
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goto error;
|
|
|
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if ((i = stv_sndctrl (0, stv680, 0x85, 0, buffer, 0x10)) != 0x10)
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goto error;
|
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if ((i = stv_sndctrl (0, stv680, 0x8d, 0, buffer, 0x08)) != 0x08)
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goto error;
|
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i = buffer[3];
|
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PDEBUG (0, "STV(i): Camera has %i pictures.", i);
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|
|
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/* get current mode */
|
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if ((i = stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08)) != 0x08)
|
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goto error;
|
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stv680->origMode = buffer[0]; /* 01 = VGA, 03 = QVGA, 00 = CIF */
|
|
|
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/* This will attemp CIF mode, if supported. If not, set to QVGA */
|
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memset (buffer, 0, 8);
|
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if (stv680->CIF)
|
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buffer[0] = 0x00;
|
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else if (stv680->QVGA)
|
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buffer[0] = 0x03;
|
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if ((i = stv_sndctrl (3, stv680, 0x07, 0x0100, buffer, 0x08)) != 0x08) {
|
|
PDEBUG (0, "STV(i): Set_Camera_Mode failed");
|
|
i = -1;
|
|
goto error;
|
|
}
|
|
buffer[0] = 0xf0;
|
|
stv_sndctrl (0, stv680, 0x87, 0, buffer, 0x08);
|
|
if (((stv680->CIF == 1) && (buffer[0] != 0x00)) || ((stv680->QVGA == 1) && (buffer[0] != 0x03))) {
|
|
PDEBUG (0, "STV(e): Error setting camera video mode!");
|
|
i = -1;
|
|
goto error;
|
|
} else {
|
|
if (buffer[0] == 0) {
|
|
stv680->VideoMode = 0x0000;
|
|
PDEBUG (0, "STV(i): Video Mode set to CIF");
|
|
}
|
|
if (buffer[0] == 0x03) {
|
|
stv680->VideoMode = 0x0300;
|
|
PDEBUG (0, "STV(i): Video Mode set to QVGA");
|
|
}
|
|
}
|
|
if ((i = stv_sndctrl (0, stv680, 0x8f, 0, buffer, 0x10)) != 0x10)
|
|
goto error;
|
|
bufsize = (buffer[0] << 24) | (buffer[1] << 16) | (buffer[2] << 8) | (buffer[3]);
|
|
stv680->cwidth = (buffer[4] << 8) | (buffer[5]); /* ->camera = 322, 356, 644 */
|
|
stv680->cheight = (buffer[6] << 8) | (buffer[7]); /* ->camera = 242, 292, 484 */
|
|
stv680->origGain = buffer[12];
|
|
|
|
goto exit;
|
|
|
|
error:
|
|
i = stv_sndctrl (0, stv680, 0x80, 0, buffer, 0x02); /* Get Last Error */
|
|
PDEBUG (1, "STV(i): last error: %i, command = 0x%x", buffer[0], buffer[1]);
|
|
kfree (buffer);
|
|
return -1;
|
|
|
|
exit:
|
|
kfree (buffer);
|
|
|
|
/* video = 320x240, 352x288 */
|
|
if (stv680->CIF == 1) {
|
|
stv680->maxwidth = 352;
|
|
stv680->maxheight = 288;
|
|
stv680->vwidth = 352;
|
|
stv680->vheight = 288;
|
|
}
|
|
if (stv680->QVGA == 1) {
|
|
stv680->maxwidth = 320;
|
|
stv680->maxheight = 240;
|
|
stv680->vwidth = 320;
|
|
stv680->vheight = 240;
|
|
}
|
|
|
|
stv680->rawbufsize = bufsize; /* must be ./. by 8 */
|
|
stv680->maxframesize = bufsize * 3; /* RGB size */
|
|
PDEBUG (2, "STV(i): cwidth = %i, cheight = %i", stv680->cwidth, stv680->cheight);
|
|
PDEBUG (1, "STV(i): width = %i, height = %i, rawbufsize = %li", stv680->vwidth, stv680->vheight, stv680->rawbufsize);
|
|
|
|
/* some default values */
|
|
stv680->bulk_in_endpointAddr = 0x82;
|
|
stv680->dropped = 0;
|
|
stv680->error = 0;
|
|
stv680->framecount = 0;
|
|
stv680->readcount = 0;
|
|
stv680->streaming = 0;
|
|
/* bright, white, colour, hue, contrast are set by software, not in stv0680 */
|
|
stv680->brightness = 32767;
|
|
stv680->chgbright = 0;
|
|
stv680->whiteness = 0; /* only for greyscale */
|
|
stv680->colour = 32767;
|
|
stv680->contrast = 32767;
|
|
stv680->hue = 32767;
|
|
stv680->palette = STV_VIDEO_PALETTE;
|
|
stv680->depth = 24; /* rgb24 bits */
|
|
if ((swapRGB_on == 0) && (swapRGB == 0))
|
|
PDEBUG (1, "STV(i): swapRGB is (auto) OFF");
|
|
else if ((swapRGB_on == 0) && (swapRGB == 1))
|
|
PDEBUG (1, "STV(i): swapRGB is (auto) ON");
|
|
else if (swapRGB_on == 1)
|
|
PDEBUG (1, "STV(i): swapRGB is (forced) ON");
|
|
else if (swapRGB_on == -1)
|
|
PDEBUG (1, "STV(i): swapRGB is (forced) OFF");
|
|
|
|
if (stv_set_video_mode (stv680) < 0) {
|
|
PDEBUG (0, "STV(e): Could not set video mode in stv_init");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/***************** last of pencam routines *******************/
|
|
|
|
/****************************************************************************
|
|
* sysfs
|
|
***************************************************************************/
|
|
#define stv680_file(name, variable, field) \
|
|
static ssize_t show_##name(struct class_device *class_dev, char *buf) \
|
|
{ \
|
|
struct video_device *vdev = to_video_device(class_dev); \
|
|
struct usb_stv *stv = video_get_drvdata(vdev); \
|
|
return sprintf(buf, field, stv->variable); \
|
|
} \
|
|
static CLASS_DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);
|
|
|
|
stv680_file(model, camera_name, "%s\n");
|
|
stv680_file(in_use, user, "%d\n");
|
|
stv680_file(streaming, streaming, "%d\n");
|
|
stv680_file(palette, palette, "%i\n");
|
|
stv680_file(frames_total, readcount, "%d\n");
|
|
stv680_file(frames_read, framecount, "%d\n");
|
|
stv680_file(packets_dropped, dropped, "%d\n");
|
|
stv680_file(decoding_errors, error, "%d\n");
|
|
|
|
static void stv680_create_sysfs_files(struct video_device *vdev)
|
|
{
|
|
video_device_create_file(vdev, &class_device_attr_model);
|
|
video_device_create_file(vdev, &class_device_attr_in_use);
|
|
video_device_create_file(vdev, &class_device_attr_streaming);
|
|
video_device_create_file(vdev, &class_device_attr_palette);
|
|
video_device_create_file(vdev, &class_device_attr_frames_total);
|
|
video_device_create_file(vdev, &class_device_attr_frames_read);
|
|
video_device_create_file(vdev, &class_device_attr_packets_dropped);
|
|
video_device_create_file(vdev, &class_device_attr_decoding_errors);
|
|
}
|
|
|
|
static void stv680_remove_sysfs_files(struct video_device *vdev)
|
|
{
|
|
video_device_remove_file(vdev, &class_device_attr_model);
|
|
video_device_remove_file(vdev, &class_device_attr_in_use);
|
|
video_device_remove_file(vdev, &class_device_attr_streaming);
|
|
video_device_remove_file(vdev, &class_device_attr_palette);
|
|
video_device_remove_file(vdev, &class_device_attr_frames_total);
|
|
video_device_remove_file(vdev, &class_device_attr_frames_read);
|
|
video_device_remove_file(vdev, &class_device_attr_packets_dropped);
|
|
video_device_remove_file(vdev, &class_device_attr_decoding_errors);
|
|
}
|
|
|
|
/********************************************************************
|
|
* Camera control
|
|
*******************************************************************/
|
|
|
|
static int stv680_get_pict (struct usb_stv *stv680, struct video_picture *p)
|
|
{
|
|
/* This sets values for v4l interface. max/min = 65535/0 */
|
|
|
|
p->brightness = stv680->brightness;
|
|
p->whiteness = stv680->whiteness; /* greyscale */
|
|
p->colour = stv680->colour;
|
|
p->contrast = stv680->contrast;
|
|
p->hue = stv680->hue;
|
|
p->palette = stv680->palette;
|
|
p->depth = stv680->depth;
|
|
return 0;
|
|
}
|
|
|
|
static int stv680_set_pict (struct usb_stv *stv680, struct video_picture *p)
|
|
{
|
|
/* See above stv680_get_pict */
|
|
|
|
if (p->palette != STV_VIDEO_PALETTE) {
|
|
PDEBUG (2, "STV(e): Palette set error in _set_pic");
|
|
return 1;
|
|
}
|
|
|
|
if (stv680->brightness != p->brightness) {
|
|
stv680->chgbright = 1;
|
|
stv680->brightness = p->brightness;
|
|
}
|
|
|
|
stv680->whiteness = p->whiteness; /* greyscale */
|
|
stv680->colour = p->colour;
|
|
stv680->contrast = p->contrast;
|
|
stv680->hue = p->hue;
|
|
stv680->palette = p->palette;
|
|
stv680->depth = p->depth;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void stv680_video_irq (struct urb *urb, struct pt_regs *regs)
|
|
{
|
|
struct usb_stv *stv680 = urb->context;
|
|
int length = urb->actual_length;
|
|
|
|
if (length < stv680->rawbufsize)
|
|
PDEBUG (2, "STV(i): Lost data in transfer: exp %li, got %i", stv680->rawbufsize, length);
|
|
|
|
/* ohoh... */
|
|
if (!stv680->streaming)
|
|
return;
|
|
|
|
if (!stv680->udev) {
|
|
PDEBUG (0, "STV(e): device vapourished in video_irq");
|
|
return;
|
|
}
|
|
|
|
/* 0 sized packets happen if we are to fast, but sometimes the camera
|
|
keeps sending them forever...
|
|
*/
|
|
if (length && !urb->status) {
|
|
stv680->nullpackets = 0;
|
|
switch (stv680->scratch[stv680->scratch_next].state) {
|
|
case BUFFER_READY:
|
|
case BUFFER_BUSY:
|
|
stv680->dropped++;
|
|
break;
|
|
|
|
case BUFFER_UNUSED:
|
|
memcpy (stv680->scratch[stv680->scratch_next].data,
|
|
(unsigned char *) urb->transfer_buffer, length);
|
|
stv680->scratch[stv680->scratch_next].state = BUFFER_READY;
|
|
stv680->scratch[stv680->scratch_next].length = length;
|
|
if (waitqueue_active (&stv680->wq)) {
|
|
wake_up_interruptible (&stv680->wq);
|
|
}
|
|
stv680->scratch_overflow = 0;
|
|
stv680->scratch_next++;
|
|
if (stv680->scratch_next >= STV680_NUMSCRATCH)
|
|
stv680->scratch_next = 0;
|
|
break;
|
|
} /* switch */
|
|
} else {
|
|
stv680->nullpackets++;
|
|
if (stv680->nullpackets > STV680_MAX_NULLPACKETS) {
|
|
if (waitqueue_active (&stv680->wq)) {
|
|
wake_up_interruptible (&stv680->wq);
|
|
}
|
|
}
|
|
} /* if - else */
|
|
|
|
/* Resubmit urb for new data */
|
|
urb->status = 0;
|
|
urb->dev = stv680->udev;
|
|
if (usb_submit_urb (urb, GFP_ATOMIC))
|
|
PDEBUG (0, "STV(e): urb burned down in video irq");
|
|
return;
|
|
} /* _video_irq */
|
|
|
|
static int stv680_start_stream (struct usb_stv *stv680)
|
|
{
|
|
struct urb *urb;
|
|
int err = 0, i;
|
|
|
|
stv680->streaming = 1;
|
|
|
|
/* Do some memory allocation */
|
|
for (i = 0; i < STV680_NUMFRAMES; i++) {
|
|
stv680->frame[i].data = stv680->fbuf + i * stv680->maxframesize;
|
|
stv680->frame[i].curpix = 0;
|
|
}
|
|
/* packet size = 4096 */
|
|
for (i = 0; i < STV680_NUMSBUF; i++) {
|
|
stv680->sbuf[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL);
|
|
if (stv680->sbuf[i].data == NULL) {
|
|
PDEBUG (0, "STV(e): Could not kmalloc raw data buffer %i", i);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
stv680->scratch_next = 0;
|
|
stv680->scratch_use = 0;
|
|
stv680->scratch_overflow = 0;
|
|
for (i = 0; i < STV680_NUMSCRATCH; i++) {
|
|
stv680->scratch[i].data = kmalloc (stv680->rawbufsize, GFP_KERNEL);
|
|
if (stv680->scratch[i].data == NULL) {
|
|
PDEBUG (0, "STV(e): Could not kmalloc raw scratch buffer %i", i);
|
|
return -1;
|
|
}
|
|
stv680->scratch[i].state = BUFFER_UNUSED;
|
|
}
|
|
|
|
for (i = 0; i < STV680_NUMSBUF; i++) {
|
|
urb = usb_alloc_urb (0, GFP_KERNEL);
|
|
if (!urb)
|
|
return -ENOMEM;
|
|
|
|
/* sbuf is urb->transfer_buffer, later gets memcpyed to scratch */
|
|
usb_fill_bulk_urb (urb, stv680->udev,
|
|
usb_rcvbulkpipe (stv680->udev, stv680->bulk_in_endpointAddr),
|
|
stv680->sbuf[i].data, stv680->rawbufsize,
|
|
stv680_video_irq, stv680);
|
|
stv680->urb[i] = urb;
|
|
err = usb_submit_urb (stv680->urb[i], GFP_KERNEL);
|
|
if (err)
|
|
PDEBUG (0, "STV(e): urb burned down in start stream");
|
|
} /* i STV680_NUMSBUF */
|
|
|
|
stv680->framecount = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int stv680_stop_stream (struct usb_stv *stv680)
|
|
{
|
|
int i;
|
|
|
|
if (!stv680->streaming || !stv680->udev)
|
|
return 1;
|
|
|
|
stv680->streaming = 0;
|
|
|
|
for (i = 0; i < STV680_NUMSBUF; i++)
|
|
if (stv680->urb[i]) {
|
|
usb_kill_urb (stv680->urb[i]);
|
|
usb_free_urb (stv680->urb[i]);
|
|
stv680->urb[i] = NULL;
|
|
kfree (stv680->sbuf[i].data);
|
|
}
|
|
for (i = 0; i < STV680_NUMSCRATCH; i++) {
|
|
kfree (stv680->scratch[i].data);
|
|
stv680->scratch[i].data = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv680_set_size (struct usb_stv *stv680, int width, int height)
|
|
{
|
|
int wasstreaming = stv680->streaming;
|
|
|
|
/* Check to see if we need to change */
|
|
if ((stv680->vwidth == width) && (stv680->vheight == height))
|
|
return 0;
|
|
|
|
PDEBUG (1, "STV(i): size request for %i x %i", width, height);
|
|
/* Check for a valid mode */
|
|
if ((!width || !height) || ((width & 1) || (height & 1))) {
|
|
PDEBUG (1, "STV(e): set_size error: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight);
|
|
return 1;
|
|
}
|
|
|
|
if ((width < (stv680->maxwidth / 2)) || (height < (stv680->maxheight / 2))) {
|
|
width = stv680->maxwidth / 2;
|
|
height = stv680->maxheight / 2;
|
|
} else if ((width >= 158) && (width <= 166) && (stv680->QVGA == 1)) {
|
|
width = 160;
|
|
height = 120;
|
|
} else if ((width >= 172) && (width <= 180) && (stv680->CIF == 1)) {
|
|
width = 176;
|
|
height = 144;
|
|
} else if ((width >= 318) && (width <= 350) && (stv680->QVGA == 1)) {
|
|
width = 320;
|
|
height = 240;
|
|
} else if ((width >= 350) && (width <= 358) && (stv680->CIF == 1)) {
|
|
width = 352;
|
|
height = 288;
|
|
} else {
|
|
PDEBUG (1, "STV(e): request for non-supported size: request: v.width = %i, v.height = %i actual: stv.width = %i, stv.height = %i", width, height, stv680->vwidth, stv680->vheight);
|
|
return 1;
|
|
}
|
|
|
|
/* Stop a current stream and start it again at the new size */
|
|
if (wasstreaming)
|
|
stv680_stop_stream (stv680);
|
|
stv680->vwidth = width;
|
|
stv680->vheight = height;
|
|
PDEBUG (1, "STV(i): size set to %i x %i", stv680->vwidth, stv680->vheight);
|
|
if (wasstreaming)
|
|
stv680_start_stream (stv680);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* Video Decoding
|
|
**********************************************************************/
|
|
|
|
/******* routines from the pencam program; hey, they work! ********/
|
|
|
|
/*
|
|
* STV0680 Vision Camera Chipset Driver
|
|
* Copyright (C) 2000 Adam Harrison <adam@antispin.org>
|
|
*/
|
|
|
|
#define RED 0
|
|
#define GREEN 1
|
|
#define BLUE 2
|
|
#define AD(x, y, w) (((y)*(w)+(x))*3)
|
|
|
|
static void bayer_unshuffle (struct usb_stv *stv680, struct stv680_scratch *buffer)
|
|
{
|
|
int x, y, i;
|
|
int w = stv680->cwidth;
|
|
int vw = stv680->cwidth, vh = stv680->cheight;
|
|
unsigned int p = 0;
|
|
int colour = 0, bayer = 0;
|
|
unsigned char *raw = buffer->data;
|
|
struct stv680_frame *frame = &stv680->frame[stv680->curframe];
|
|
unsigned char *output = frame->data;
|
|
unsigned char *temp = frame->data;
|
|
int offset = buffer->offset;
|
|
|
|
if (frame->curpix == 0) {
|
|
if (frame->grabstate == FRAME_READY) {
|
|
frame->grabstate = FRAME_GRABBING;
|
|
}
|
|
}
|
|
if (offset != frame->curpix) { /* Regard frame as lost :( */
|
|
frame->curpix = 0;
|
|
stv680->error++;
|
|
return;
|
|
}
|
|
|
|
if ((stv680->vwidth == 320) || (stv680->vwidth == 160)) {
|
|
vw = 320;
|
|
vh = 240;
|
|
}
|
|
if ((stv680->vwidth == 352) || (stv680->vwidth == 176)) {
|
|
vw = 352;
|
|
vh = 288;
|
|
}
|
|
|
|
memset (output, 0, 3 * vw * vh); /* clear output matrix. */
|
|
|
|
for (y = 0; y < vh; y++) {
|
|
for (x = 0; x < vw; x++) {
|
|
if (x & 1)
|
|
p = *(raw + y * w + (x >> 1));
|
|
else
|
|
p = *(raw + y * w + (x >> 1) + (w >> 1));
|
|
|
|
if (y & 1)
|
|
bayer = 2;
|
|
else
|
|
bayer = 0;
|
|
if (x & 1)
|
|
bayer++;
|
|
|
|
switch (bayer) {
|
|
case 0:
|
|
case 3:
|
|
colour = 1;
|
|
break;
|
|
case 1:
|
|
colour = 0;
|
|
break;
|
|
case 2:
|
|
colour = 2;
|
|
break;
|
|
}
|
|
i = (y * vw + x) * 3;
|
|
*(output + i + colour) = (unsigned char) p;
|
|
} /* for x */
|
|
|
|
} /* for y */
|
|
|
|
/****** gamma correction plus hardcoded white balance */
|
|
/* Thanks to Alexander Schwartx <alexander.schwartx@gmx.net> for this code.
|
|
Correction values red[], green[], blue[], are generated by
|
|
(pow(i/256.0, GAMMA)*255.0)*white balanceRGB where GAMMA=0.55, 1<i<255.
|
|
White balance (RGB)= 1.0, 1.17, 1.48. Values are calculated as double float and
|
|
converted to unsigned char. Values are in stv680.h */
|
|
|
|
for (y = 0; y < vh; y++) {
|
|
for (x = 0; x < vw; x++) {
|
|
i = (y * vw + x) * 3;
|
|
*(output + i) = red[*(output + i)];
|
|
*(output + i + 1) = green[*(output + i + 1)];
|
|
*(output + i + 2) = blue[*(output + i + 2)];
|
|
}
|
|
}
|
|
|
|
/****** bayer demosaic ******/
|
|
for (y = 1; y < (vh - 1); y++) {
|
|
for (x = 1; x < (vw - 1); x++) { /* work out pixel type */
|
|
if (y & 1)
|
|
bayer = 0;
|
|
else
|
|
bayer = 2;
|
|
if (!(x & 1))
|
|
bayer++;
|
|
|
|
switch (bayer) {
|
|
case 0: /* green. blue lr, red tb */
|
|
*(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y, vw) + BLUE) + (int) *(output + AD (x + 1, y, vw) + BLUE)) >> 1;
|
|
*(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x, y - 1, vw) + RED) + (int) *(output + AD (x, y + 1, vw) + RED)) >> 1;
|
|
break;
|
|
|
|
case 1: /* blue. green lrtb, red diagonals */
|
|
*(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2;
|
|
*(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y - 1, vw) + RED) + (int) *(output + AD (x - 1, y + 1, vw) + RED) + (int) *(output + AD (x + 1, y - 1, vw) + RED) + (int) *(output + AD (x + 1, y + 1, vw) + RED)) >> 2;
|
|
break;
|
|
|
|
case 2: /* red. green lrtb, blue diagonals */
|
|
*(output + AD (x, y, vw) + GREEN) = ((int) *(output + AD (x - 1, y, vw) + GREEN) + (int) *(output + AD (x + 1, y, vw) + GREEN) + (int) *(output + AD (x, y - 1, vw) + GREEN) + (int) *(output + AD (x, y + 1, vw) + GREEN)) >> 2;
|
|
*(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x - 1, y - 1, vw) + BLUE) + (int) *(output + AD (x + 1, y - 1, vw) + BLUE) + (int) *(output + AD (x - 1, y + 1, vw) + BLUE) + (int) *(output + AD (x + 1, y + 1, vw) + BLUE)) >> 2;
|
|
break;
|
|
|
|
case 3: /* green. red lr, blue tb */
|
|
*(output + AD (x, y, vw) + RED) = ((int) *(output + AD (x - 1, y, vw) + RED) + (int) *(output + AD (x + 1, y, vw) + RED)) >> 1;
|
|
*(output + AD (x, y, vw) + BLUE) = ((int) *(output + AD (x, y - 1, vw) + BLUE) + (int) *(output + AD (x, y + 1, vw) + BLUE)) >> 1;
|
|
break;
|
|
} /* switch */
|
|
} /* for x */
|
|
} /* for y - end demosaic */
|
|
|
|
/* fix top and bottom row, left and right side */
|
|
i = vw * 3;
|
|
memcpy (output, (output + i), i);
|
|
memcpy ((output + (vh * i)), (output + ((vh - 1) * i)), i);
|
|
for (y = 0; y < vh; y++) {
|
|
i = y * vw * 3;
|
|
memcpy ((output + i), (output + i + 3), 3);
|
|
memcpy ((output + i + (vw * 3)), (output + i + (vw - 1) * 3), 3);
|
|
}
|
|
|
|
/* process all raw data, then trim to size if necessary */
|
|
if ((stv680->vwidth == 160) || (stv680->vwidth == 176)) {
|
|
i = 0;
|
|
for (y = 0; y < vh; y++) {
|
|
if (!(y & 1)) {
|
|
for (x = 0; x < vw; x++) {
|
|
p = (y * vw + x) * 3;
|
|
if (!(x & 1)) {
|
|
*(output + i) = *(output + p);
|
|
*(output + i + 1) = *(output + p + 1);
|
|
*(output + i + 2) = *(output + p + 2);
|
|
i += 3;
|
|
}
|
|
} /* for x */
|
|
}
|
|
} /* for y */
|
|
}
|
|
/* reset to proper width */
|
|
if ((stv680->vwidth == 160)) {
|
|
vw = 160;
|
|
vh = 120;
|
|
}
|
|
if ((stv680->vwidth == 176)) {
|
|
vw = 176;
|
|
vh = 144;
|
|
}
|
|
|
|
/* output is RGB; some programs want BGR */
|
|
/* swapRGB_on=0 -> program decides; swapRGB_on=1, always swap */
|
|
/* swapRGB_on=-1, never swap */
|
|
if (((swapRGB == 1) && (swapRGB_on != -1)) || (swapRGB_on == 1)) {
|
|
for (y = 0; y < vh; y++) {
|
|
for (x = 0; x < vw; x++) {
|
|
i = (y * vw + x) * 3;
|
|
*(temp) = *(output + i);
|
|
*(output + i) = *(output + i + 2);
|
|
*(output + i + 2) = *(temp);
|
|
}
|
|
}
|
|
}
|
|
/* brightness */
|
|
if (stv680->chgbright == 1) {
|
|
if (stv680->brightness >= 32767) {
|
|
p = (stv680->brightness - 32767) / 256;
|
|
for (x = 0; x < (vw * vh * 3); x++) {
|
|
if ((*(output + x) + (unsigned char) p) > 255)
|
|
*(output + x) = 255;
|
|
else
|
|
*(output + x) += (unsigned char) p;
|
|
} /* for */
|
|
} else {
|
|
p = (32767 - stv680->brightness) / 256;
|
|
for (x = 0; x < (vw * vh * 3); x++) {
|
|
if ((unsigned char) p > *(output + x))
|
|
*(output + x) = 0;
|
|
else
|
|
*(output + x) -= (unsigned char) p;
|
|
} /* for */
|
|
} /* else */
|
|
}
|
|
/* if */
|
|
frame->curpix = 0;
|
|
frame->curlinepix = 0;
|
|
frame->grabstate = FRAME_DONE;
|
|
stv680->framecount++;
|
|
stv680->readcount++;
|
|
if (stv680->frame[(stv680->curframe + 1) & (STV680_NUMFRAMES - 1)].grabstate == FRAME_READY) {
|
|
stv680->curframe = (stv680->curframe + 1) & (STV680_NUMFRAMES - 1);
|
|
}
|
|
|
|
} /* bayer_unshuffle */
|
|
|
|
/******* end routines from the pencam program *********/
|
|
|
|
static int stv680_newframe (struct usb_stv *stv680, int framenr)
|
|
{
|
|
int errors = 0;
|
|
|
|
while (stv680->streaming && (stv680->frame[framenr].grabstate == FRAME_READY || stv680->frame[framenr].grabstate == FRAME_GRABBING)) {
|
|
if (!stv680->frame[framenr].curpix) {
|
|
errors++;
|
|
}
|
|
wait_event_interruptible (stv680->wq, (stv680->scratch[stv680->scratch_use].state == BUFFER_READY));
|
|
|
|
if (stv680->nullpackets > STV680_MAX_NULLPACKETS) {
|
|
stv680->nullpackets = 0;
|
|
PDEBUG (2, "STV(i): too many null length packets, restarting capture");
|
|
stv680_stop_stream (stv680);
|
|
stv680_start_stream (stv680);
|
|
} else {
|
|
if (stv680->scratch[stv680->scratch_use].state != BUFFER_READY) {
|
|
stv680->frame[framenr].grabstate = FRAME_ERROR;
|
|
PDEBUG (2, "STV(e): FRAME_ERROR in _newframe");
|
|
return -EIO;
|
|
}
|
|
stv680->scratch[stv680->scratch_use].state = BUFFER_BUSY;
|
|
|
|
bayer_unshuffle (stv680, &stv680->scratch[stv680->scratch_use]);
|
|
|
|
stv680->scratch[stv680->scratch_use].state = BUFFER_UNUSED;
|
|
stv680->scratch_use++;
|
|
if (stv680->scratch_use >= STV680_NUMSCRATCH)
|
|
stv680->scratch_use = 0;
|
|
if (errors > STV680_MAX_ERRORS) {
|
|
errors = 0;
|
|
PDEBUG (2, "STV(i): too many errors, restarting capture");
|
|
stv680_stop_stream (stv680);
|
|
stv680_start_stream (stv680);
|
|
}
|
|
} /* else */
|
|
} /* while */
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************
|
|
* Video4Linux
|
|
*********************************************************************/
|
|
|
|
static int stv_open (struct inode *inode, struct file *file)
|
|
{
|
|
struct video_device *dev = video_devdata(file);
|
|
struct usb_stv *stv680 = video_get_drvdata(dev);
|
|
int err = 0;
|
|
|
|
/* we are called with the BKL held */
|
|
stv680->user = 1;
|
|
err = stv_init (stv680); /* main initialization routine for camera */
|
|
|
|
if (err >= 0) {
|
|
stv680->fbuf = rvmalloc (stv680->maxframesize * STV680_NUMFRAMES);
|
|
if (!stv680->fbuf) {
|
|
PDEBUG (0, "STV(e): Could not rvmalloc frame bufer");
|
|
err = -ENOMEM;
|
|
}
|
|
file->private_data = dev;
|
|
}
|
|
if (err)
|
|
stv680->user = 0;
|
|
|
|
return err;
|
|
}
|
|
|
|
static int stv_close (struct inode *inode, struct file *file)
|
|
{
|
|
struct video_device *dev = file->private_data;
|
|
struct usb_stv *stv680 = video_get_drvdata(dev);
|
|
int i;
|
|
|
|
for (i = 0; i < STV680_NUMFRAMES; i++)
|
|
stv680->frame[i].grabstate = FRAME_UNUSED;
|
|
if (stv680->streaming)
|
|
stv680_stop_stream (stv680);
|
|
|
|
if ((i = stv_stop_video (stv680)) < 0)
|
|
PDEBUG (1, "STV(e): stop_video failed in stv_close");
|
|
|
|
rvfree (stv680->fbuf, stv680->maxframesize * STV680_NUMFRAMES);
|
|
stv680->user = 0;
|
|
|
|
if (stv680->removed) {
|
|
kfree (stv680);
|
|
stv680 = NULL;
|
|
PDEBUG (0, "STV(i): device unregistered");
|
|
}
|
|
file->private_data = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int stv680_do_ioctl (struct inode *inode, struct file *file,
|
|
unsigned int cmd, void *arg)
|
|
{
|
|
struct video_device *vdev = file->private_data;
|
|
struct usb_stv *stv680 = video_get_drvdata(vdev);
|
|
|
|
if (!stv680->udev)
|
|
return -EIO;
|
|
|
|
switch (cmd) {
|
|
case VIDIOCGCAP:{
|
|
struct video_capability *b = arg;
|
|
|
|
strcpy (b->name, stv680->camera_name);
|
|
b->type = VID_TYPE_CAPTURE;
|
|
b->channels = 1;
|
|
b->audios = 0;
|
|
b->maxwidth = stv680->maxwidth;
|
|
b->maxheight = stv680->maxheight;
|
|
b->minwidth = stv680->maxwidth / 2;
|
|
b->minheight = stv680->maxheight / 2;
|
|
return 0;
|
|
}
|
|
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, "STV Camera");
|
|
return 0;
|
|
}
|
|
case VIDIOCSCHAN:{
|
|
struct video_channel *v = arg;
|
|
if (v->channel != 0)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
case VIDIOCGPICT:{
|
|
struct video_picture *p = arg;
|
|
|
|
stv680_get_pict (stv680, p);
|
|
return 0;
|
|
}
|
|
case VIDIOCSPICT:{
|
|
struct video_picture *p = arg;
|
|
|
|
if (stv680_set_pict (stv680, p))
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
case VIDIOCSWIN:{
|
|
struct video_window *vw = arg;
|
|
|
|
if (vw->flags)
|
|
return -EINVAL;
|
|
if (vw->clipcount)
|
|
return -EINVAL;
|
|
if (vw->width != stv680->vwidth) {
|
|
if (stv680_set_size (stv680, vw->width, vw->height)) {
|
|
PDEBUG (2, "STV(e): failed (from user) set size in VIDIOCSWIN");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
case VIDIOCGWIN:{
|
|
struct video_window *vw = arg;
|
|
|
|
vw->x = 0; /* FIXME */
|
|
vw->y = 0;
|
|
vw->chromakey = 0;
|
|
vw->flags = 0;
|
|
vw->clipcount = 0;
|
|
vw->width = stv680->vwidth;
|
|
vw->height = stv680->vheight;
|
|
return 0;
|
|
}
|
|
case VIDIOCGMBUF:{
|
|
struct video_mbuf *vm = arg;
|
|
int i;
|
|
|
|
memset (vm, 0, sizeof (*vm));
|
|
vm->size = STV680_NUMFRAMES * stv680->maxframesize;
|
|
vm->frames = STV680_NUMFRAMES;
|
|
for (i = 0; i < STV680_NUMFRAMES; i++)
|
|
vm->offsets[i] = stv680->maxframesize * i;
|
|
return 0;
|
|
}
|
|
case VIDIOCMCAPTURE:{
|
|
struct video_mmap *vm = arg;
|
|
|
|
if (vm->format != STV_VIDEO_PALETTE) {
|
|
PDEBUG (2, "STV(i): VIDIOCMCAPTURE vm.format (%i) != VIDEO_PALETTE (%i)",
|
|
vm->format, STV_VIDEO_PALETTE);
|
|
if ((vm->format == 3) && (swapRGB_on == 0)) {
|
|
PDEBUG (2, "STV(i): VIDIOCMCAPTURE swapRGB is (auto) ON");
|
|
/* this may fix those apps (e.g., xawtv) that want BGR */
|
|
swapRGB = 1;
|
|
}
|
|
return -EINVAL;
|
|
}
|
|
if (vm->frame >= STV680_NUMFRAMES) {
|
|
PDEBUG (2, "STV(e): VIDIOCMCAPTURE vm.frame > NUMFRAMES");
|
|
return -EINVAL;
|
|
}
|
|
if ((stv680->frame[vm->frame].grabstate == FRAME_ERROR)
|
|
|| (stv680->frame[vm->frame].grabstate == FRAME_GRABBING)) {
|
|
PDEBUG (2, "STV(e): VIDIOCMCAPTURE grabstate (%i) error",
|
|
stv680->frame[vm->frame].grabstate);
|
|
return -EBUSY;
|
|
}
|
|
/* Is this according to the v4l spec??? */
|
|
if (stv680->vwidth != vm->width) {
|
|
if (stv680_set_size (stv680, vm->width, vm->height)) {
|
|
PDEBUG (2, "STV(e): VIDIOCMCAPTURE set_size failed");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
stv680->frame[vm->frame].grabstate = FRAME_READY;
|
|
|
|
if (!stv680->streaming)
|
|
stv680_start_stream (stv680);
|
|
|
|
return 0;
|
|
}
|
|
case VIDIOCSYNC:{
|
|
int *frame = arg;
|
|
int ret = 0;
|
|
|
|
if (*frame < 0 || *frame >= STV680_NUMFRAMES) {
|
|
PDEBUG (2, "STV(e): Bad frame # in VIDIOCSYNC");
|
|
return -EINVAL;
|
|
}
|
|
ret = stv680_newframe (stv680, *frame);
|
|
stv680->frame[*frame].grabstate = FRAME_UNUSED;
|
|
return ret;
|
|
}
|
|
case VIDIOCGFBUF:{
|
|
struct video_buffer *vb = arg;
|
|
|
|
memset (vb, 0, sizeof (*vb));
|
|
return 0;
|
|
}
|
|
case VIDIOCKEY:
|
|
return 0;
|
|
case VIDIOCCAPTURE:
|
|
{
|
|
PDEBUG (2, "STV(e): VIDIOCCAPTURE failed");
|
|
return -EINVAL;
|
|
}
|
|
case VIDIOCSFBUF:
|
|
case VIDIOCGTUNER:
|
|
case VIDIOCSTUNER:
|
|
case VIDIOCGFREQ:
|
|
case VIDIOCSFREQ:
|
|
case VIDIOCGAUDIO:
|
|
case VIDIOCSAUDIO:
|
|
return -EINVAL;
|
|
default:
|
|
return -ENOIOCTLCMD;
|
|
} /* end switch */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int stv680_ioctl(struct inode *inode, struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
return video_usercopy(inode, file, cmd, arg, stv680_do_ioctl);
|
|
}
|
|
|
|
static int stv680_mmap (struct file *file, struct vm_area_struct *vma)
|
|
{
|
|
struct video_device *dev = file->private_data;
|
|
struct usb_stv *stv680 = video_get_drvdata(dev);
|
|
unsigned long start = vma->vm_start;
|
|
unsigned long size = vma->vm_end-vma->vm_start;
|
|
unsigned long page, pos;
|
|
|
|
down (&stv680->lock);
|
|
|
|
if (stv680->udev == NULL) {
|
|
up (&stv680->lock);
|
|
return -EIO;
|
|
}
|
|
if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1)
|
|
& ~(PAGE_SIZE - 1))) {
|
|
up (&stv680->lock);
|
|
return -EINVAL;
|
|
}
|
|
pos = (unsigned long) stv680->fbuf;
|
|
while (size > 0) {
|
|
page = vmalloc_to_pfn((void *)pos);
|
|
if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
|
|
up (&stv680->lock);
|
|
return -EAGAIN;
|
|
}
|
|
start += PAGE_SIZE;
|
|
pos += PAGE_SIZE;
|
|
if (size > PAGE_SIZE)
|
|
size -= PAGE_SIZE;
|
|
else
|
|
size = 0;
|
|
}
|
|
up (&stv680->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static ssize_t stv680_read (struct file *file, char __user *buf,
|
|
size_t count, loff_t *ppos)
|
|
{
|
|
struct video_device *dev = file->private_data;
|
|
unsigned long int realcount = count;
|
|
int ret = 0;
|
|
struct usb_stv *stv680 = video_get_drvdata(dev);
|
|
unsigned long int i;
|
|
|
|
if (STV680_NUMFRAMES != 2) {
|
|
PDEBUG (0, "STV(e): STV680_NUMFRAMES needs to be 2!");
|
|
return -1;
|
|
}
|
|
if (stv680->udev == NULL)
|
|
return -EIO;
|
|
if (realcount > (stv680->vwidth * stv680->vheight * 3))
|
|
realcount = stv680->vwidth * stv680->vheight * 3;
|
|
|
|
/* Shouldn't happen: */
|
|
if (stv680->frame[0].grabstate == FRAME_GRABBING) {
|
|
PDEBUG (2, "STV(e): FRAME_GRABBING in stv680_read");
|
|
return -EBUSY;
|
|
}
|
|
stv680->frame[0].grabstate = FRAME_READY;
|
|
stv680->frame[1].grabstate = FRAME_UNUSED;
|
|
stv680->curframe = 0;
|
|
|
|
if (!stv680->streaming)
|
|
stv680_start_stream (stv680);
|
|
|
|
if (!stv680->streaming) {
|
|
ret = stv680_newframe (stv680, 0); /* ret should = 0 */
|
|
}
|
|
|
|
ret = stv680_newframe (stv680, 0);
|
|
|
|
if (!ret) {
|
|
if ((i = copy_to_user (buf, stv680->frame[0].data, realcount)) != 0) {
|
|
PDEBUG (2, "STV(e): copy_to_user frame 0 failed, ret count = %li", i);
|
|
return -EFAULT;
|
|
}
|
|
} else {
|
|
realcount = ret;
|
|
}
|
|
stv680->frame[0].grabstate = FRAME_UNUSED;
|
|
return realcount;
|
|
} /* stv680_read */
|
|
|
|
static struct file_operations stv680_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = stv_open,
|
|
.release = stv_close,
|
|
.read = stv680_read,
|
|
.mmap = stv680_mmap,
|
|
.ioctl = stv680_ioctl,
|
|
.llseek = no_llseek,
|
|
};
|
|
static struct video_device stv680_template = {
|
|
.owner = THIS_MODULE,
|
|
.name = "STV0680 USB camera",
|
|
.type = VID_TYPE_CAPTURE,
|
|
.hardware = VID_HARDWARE_SE401,
|
|
.fops = &stv680_fops,
|
|
.release = video_device_release,
|
|
.minor = -1,
|
|
};
|
|
|
|
static int stv680_probe (struct usb_interface *intf, const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|
struct usb_host_interface *interface;
|
|
struct usb_stv *stv680 = NULL;
|
|
char *camera_name = NULL;
|
|
int retval = 0;
|
|
|
|
/* We don't handle multi-config cameras */
|
|
if (dev->descriptor.bNumConfigurations != 1) {
|
|
PDEBUG (0, "STV(e): Number of Configurations != 1");
|
|
return -ENODEV;
|
|
}
|
|
|
|
interface = &intf->altsetting[0];
|
|
/* Is it a STV680? */
|
|
if ((le16_to_cpu(dev->descriptor.idVendor) == USB_PENCAM_VENDOR_ID) &&
|
|
(le16_to_cpu(dev->descriptor.idProduct) == USB_PENCAM_PRODUCT_ID)) {
|
|
camera_name = "STV0680";
|
|
PDEBUG (0, "STV(i): STV0680 camera found.");
|
|
} else {
|
|
PDEBUG (0, "STV(e): Vendor/Product ID do not match STV0680 values.");
|
|
PDEBUG (0, "STV(e): Check that the STV0680 camera is connected to the computer.");
|
|
retval = -ENODEV;
|
|
goto error;
|
|
}
|
|
/* We found one */
|
|
if ((stv680 = kmalloc (sizeof (*stv680), GFP_KERNEL)) == NULL) {
|
|
PDEBUG (0, "STV(e): couldn't kmalloc stv680 struct.");
|
|
retval = -ENOMEM;
|
|
goto error;
|
|
}
|
|
|
|
memset (stv680, 0, sizeof (*stv680));
|
|
|
|
stv680->udev = dev;
|
|
stv680->camera_name = camera_name;
|
|
|
|
stv680->vdev = video_device_alloc();
|
|
if (!stv680->vdev) {
|
|
retval = -ENOMEM;
|
|
goto error;
|
|
}
|
|
memcpy(stv680->vdev, &stv680_template, sizeof(stv680_template));
|
|
stv680->vdev->dev = &intf->dev;
|
|
video_set_drvdata(stv680->vdev, stv680);
|
|
|
|
memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name));
|
|
init_waitqueue_head (&stv680->wq);
|
|
init_MUTEX (&stv680->lock);
|
|
wmb ();
|
|
|
|
if (video_register_device (stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) {
|
|
PDEBUG (0, "STV(e): video_register_device failed");
|
|
retval = -EIO;
|
|
goto error_vdev;
|
|
}
|
|
PDEBUG (0, "STV(i): registered new video device: video%d", stv680->vdev->minor);
|
|
|
|
usb_set_intfdata (intf, stv680);
|
|
stv680_create_sysfs_files(stv680->vdev);
|
|
return 0;
|
|
|
|
error_vdev:
|
|
video_device_release(stv680->vdev);
|
|
error:
|
|
kfree(stv680);
|
|
return retval;
|
|
}
|
|
|
|
static inline void usb_stv680_remove_disconnected (struct usb_stv *stv680)
|
|
{
|
|
int i;
|
|
|
|
stv680->udev = NULL;
|
|
stv680->frame[0].grabstate = FRAME_ERROR;
|
|
stv680->frame[1].grabstate = FRAME_ERROR;
|
|
stv680->streaming = 0;
|
|
|
|
wake_up_interruptible (&stv680->wq);
|
|
|
|
for (i = 0; i < STV680_NUMSBUF; i++)
|
|
if (stv680->urb[i]) {
|
|
usb_kill_urb (stv680->urb[i]);
|
|
usb_free_urb (stv680->urb[i]);
|
|
stv680->urb[i] = NULL;
|
|
kfree (stv680->sbuf[i].data);
|
|
}
|
|
for (i = 0; i < STV680_NUMSCRATCH; i++)
|
|
kfree (stv680->scratch[i].data);
|
|
PDEBUG (0, "STV(i): %s disconnected", stv680->camera_name);
|
|
|
|
/* Free the memory */
|
|
kfree (stv680);
|
|
}
|
|
|
|
static void stv680_disconnect (struct usb_interface *intf)
|
|
{
|
|
struct usb_stv *stv680 = usb_get_intfdata (intf);
|
|
|
|
usb_set_intfdata (intf, NULL);
|
|
|
|
if (stv680) {
|
|
/* We don't want people trying to open up the device */
|
|
if (stv680->vdev) {
|
|
stv680_remove_sysfs_files(stv680->vdev);
|
|
video_unregister_device(stv680->vdev);
|
|
stv680->vdev = NULL;
|
|
}
|
|
if (!stv680->user) {
|
|
usb_stv680_remove_disconnected (stv680);
|
|
} else {
|
|
stv680->removed = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct usb_driver stv680_driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "stv680",
|
|
.probe = stv680_probe,
|
|
.disconnect = stv680_disconnect,
|
|
.id_table = device_table
|
|
};
|
|
|
|
/********************************************************************
|
|
* Module routines
|
|
********************************************************************/
|
|
|
|
static int __init usb_stv680_init (void)
|
|
{
|
|
if (usb_register (&stv680_driver) < 0) {
|
|
PDEBUG (0, "STV(e): Could not setup STV0680 driver");
|
|
return -1;
|
|
}
|
|
PDEBUG (0, "STV(i): usb camera driver version %s registering", DRIVER_VERSION);
|
|
|
|
info(DRIVER_DESC " " DRIVER_VERSION);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit usb_stv680_exit (void)
|
|
{
|
|
usb_deregister (&stv680_driver);
|
|
PDEBUG (0, "STV(i): driver deregistered");
|
|
}
|
|
|
|
module_init (usb_stv680_init);
|
|
module_exit (usb_stv680_exit);
|