| /* |
| * USB ViCam WebCam driver |
| * Copyright (c) 2002 Joe Burks (jburks@wavicle.org), |
| * Christopher L Cheney (ccheney@cheney.cx), |
| * Pavel Machek (pavel@suse.cz), |
| * John Tyner (jtyner@cs.ucr.edu), |
| * Monroe Williams (monroe@pobox.com) |
| * |
| * Supports 3COM HomeConnect PC Digital WebCam |
| * |
| * 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. |
| * |
| * This source code is based heavily on the CPiA webcam driver which was |
| * written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt |
| * |
| * Portions of this code were also copied from usbvideo.c |
| * |
| * Special thanks to the the whole team at Sourceforge for help making |
| * this driver become a reality. Notably: |
| * Andy Armstrong who reverse engineered the color encoding and |
| * Pavel Machek and Chris Cheney who worked on reverse engineering the |
| * camera controls and wrote the first generation driver. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/videodev.h> |
| #include <linux/usb.h> |
| #include <linux/vmalloc.h> |
| #include <linux/slab.h> |
| #include <linux/proc_fs.h> |
| #include "usbvideo.h" |
| |
| // #define VICAM_DEBUG |
| |
| #ifdef VICAM_DEBUG |
| #define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __FUNCTION__, lineno, ##args) |
| #define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args) |
| #else |
| #define DBG(fmn,args...) do {} while(0) |
| #endif |
| |
| #define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org" |
| #define DRIVER_DESC "ViCam WebCam Driver" |
| |
| /* Define these values to match your device */ |
| #define USB_VICAM_VENDOR_ID 0x04c1 |
| #define USB_VICAM_PRODUCT_ID 0x009d |
| |
| #define VICAM_BYTES_PER_PIXEL 3 |
| #define VICAM_MAX_READ_SIZE (512*242+128) |
| #define VICAM_MAX_FRAME_SIZE (VICAM_BYTES_PER_PIXEL*320*240) |
| #define VICAM_FRAMES 2 |
| |
| #define VICAM_HEADER_SIZE 64 |
| |
| #define clamp( x, l, h ) max_t( __typeof__( x ), \ |
| ( l ), \ |
| min_t( __typeof__( x ), \ |
| ( h ), \ |
| ( x ) ) ) |
| |
| /* Not sure what all the bytes in these char |
| * arrays do, but they're necessary to make |
| * the camera work. |
| */ |
| |
| static unsigned char setup1[] = { |
| 0xB6, 0xC3, 0x1F, 0x00, 0x02, 0x64, 0xE7, 0x67, |
| 0xFD, 0xFF, 0x0E, 0xC0, 0xE7, 0x09, 0xDE, 0x00, |
| 0x8E, 0x00, 0xC0, 0x09, 0x40, 0x03, 0xC0, 0x17, |
| 0x44, 0x03, 0x4B, 0xAF, 0xC0, 0x07, 0x00, 0x00, |
| 0x4B, 0xAF, 0x97, 0xCF, 0x00, 0x00 |
| }; |
| |
| static unsigned char setup2[] = { |
| 0xB6, 0xC3, 0x03, 0x00, 0x03, 0x64, 0x18, 0x00, |
| 0x00, 0x00 |
| }; |
| |
| static unsigned char setup3[] = { |
| 0xB6, 0xC3, 0x01, 0x00, 0x06, 0x64, 0x00, 0x00 |
| }; |
| |
| static unsigned char setup4[] = { |
| 0xB6, 0xC3, 0x8F, 0x06, 0x02, 0x64, 0xE7, 0x07, |
| 0x00, 0x00, 0x08, 0xC0, 0xE7, 0x07, 0x00, 0x00, |
| 0x3E, 0xC0, 0xE7, 0x07, 0x54, 0x01, 0xAA, 0x00, |
| 0xE7, 0x07, 0xC8, 0x05, 0xB6, 0x00, 0xE7, 0x07, |
| 0x42, 0x01, 0xD2, 0x00, 0xE7, 0x07, 0x7C, 0x00, |
| 0x16, 0x00, 0xE7, 0x07, 0x56, 0x00, 0x18, 0x00, |
| 0xE7, 0x07, 0x06, 0x00, 0x92, 0xC0, 0xE7, 0x07, |
| 0x00, 0x00, 0x1E, 0xC0, 0xE7, 0x07, 0xFF, 0xFF, |
| 0x22, 0xC0, 0xE7, 0x07, 0x04, 0x00, 0x24, 0xC0, |
| 0xE7, 0x07, 0xEC, 0x27, 0x28, 0xC0, 0xE7, 0x07, |
| 0x16, 0x01, 0x8E, 0x00, 0xE7, 0x87, 0x01, 0x00, |
| 0x0E, 0xC0, 0x97, 0xCF, 0xD7, 0x09, 0x00, 0xC0, |
| 0xE7, 0x77, 0x01, 0x00, 0x92, 0xC0, 0x09, 0xC1, |
| 0xE7, 0x09, 0xFE, 0x05, 0x24, 0x01, 0xE7, 0x09, |
| 0x04, 0x06, 0x26, 0x01, 0xE7, 0x07, 0x07, 0x00, |
| 0x92, 0xC0, 0xE7, 0x05, 0x00, 0xC0, 0xC0, 0xDF, |
| 0x97, 0xCF, 0x17, 0x00, 0x57, 0x00, 0x17, 0x02, |
| 0xD7, 0x09, 0x00, 0xC0, 0xE7, 0x77, 0x01, 0x00, |
| 0x92, 0xC0, 0x0A, 0xC1, 0xE7, 0x57, 0xFF, 0xFF, |
| 0xFA, 0x05, 0x0D, 0xC0, 0xE7, 0x57, 0x00, 0x00, |
| 0xFA, 0x05, 0x0F, 0xC0, 0x9F, 0xAF, 0xC6, 0x00, |
| 0xE7, 0x05, 0x00, 0xC0, 0xC8, 0x05, 0xC1, 0x05, |
| 0xC0, 0x05, 0xC0, 0xDF, 0x97, 0xCF, 0x27, 0xDA, |
| 0xFA, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x0B, 0x06, |
| 0x73, 0xCF, 0x9F, 0xAF, 0x78, 0x01, 0x9F, 0xAF, |
| 0x1A, 0x03, 0x6E, 0xCF, 0xE7, 0x09, 0xFC, 0x05, |
| 0x24, 0x01, 0xE7, 0x09, 0x02, 0x06, 0x26, 0x01, |
| 0xE7, 0x07, 0x07, 0x00, 0x92, 0xC0, 0xE7, 0x09, |
| 0xFC, 0x05, 0xFE, 0x05, 0xE7, 0x09, 0x02, 0x06, |
| 0x04, 0x06, 0xE7, 0x09, 0x00, 0x06, 0xFC, 0x05, |
| 0xE7, 0x09, 0xFE, 0x05, 0x00, 0x06, 0x27, 0xDA, |
| 0xFA, 0x05, 0xE7, 0x57, 0x01, 0x00, 0xFA, 0x05, |
| 0x02, 0xCA, 0x04, 0xC0, 0x97, 0xCF, 0x9F, 0xAF, |
| 0x66, 0x05, 0x97, 0xCF, 0xE7, 0x07, 0x40, 0x00, |
| 0x02, 0x06, 0xC8, 0x09, 0xFC, 0x05, 0x9F, 0xAF, |
| 0xDA, 0x02, 0x97, 0xCF, 0xCF, 0x17, 0x02, 0x00, |
| 0xEF, 0x57, 0x81, 0x00, 0x09, 0x06, 0x9F, 0xA0, |
| 0xB6, 0x01, 0xEF, 0x57, 0x80, 0x00, 0x09, 0x06, |
| 0x9F, 0xA0, 0x40, 0x02, 0xEF, 0x57, 0x01, 0x00, |
| 0x0B, 0x06, 0x9F, 0xA0, 0x46, 0x03, 0xE7, 0x07, |
| 0x01, 0x00, 0x0A, 0xC0, 0x46, 0xAF, 0x47, 0xAF, |
| 0x9F, 0xAF, 0x40, 0x02, 0xE7, 0x07, 0x2E, 0x00, |
| 0x0A, 0xC0, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06, |
| 0x97, 0xCF, 0x00, 0x0E, 0x01, 0x00, 0xC0, 0x57, |
| 0x51, 0x00, 0x9F, 0xC0, 0x9E, 0x02, 0xC0, 0x57, |
| 0x50, 0x00, 0x20, 0xC0, 0xC0, 0x57, 0x55, 0x00, |
| 0x12, 0xC0, 0xC0, 0x57, 0x56, 0x00, 0x9F, 0xC0, |
| 0x72, 0x02, 0x9F, 0xCF, 0xD6, 0x02, 0xC1, 0x0B, |
| 0x08, 0x06, 0x01, 0xD0, 0x6F, 0x90, 0x08, 0x06, |
| 0xC0, 0x07, 0x08, 0x00, 0xC1, 0x0B, 0x08, 0x06, |
| 0x9F, 0xAF, 0x28, 0x05, 0x97, 0xCF, 0x2F, 0x0E, |
| 0x02, 0x00, 0x08, 0x06, 0xC0, 0x07, 0x08, 0x00, |
| 0xC1, 0x0B, 0x08, 0x06, 0x9F, 0xAF, 0x28, 0x05, |
| 0x9F, 0xCF, 0xD6, 0x02, 0x2F, 0x0E, 0x02, 0x00, |
| 0x09, 0x06, 0xEF, 0x87, 0x80, 0x00, 0x09, 0x06, |
| 0x9F, 0xCF, 0xD6, 0x02, 0xEF, 0x67, 0x7F, 0xFF, |
| 0x09, 0x06, 0xE7, 0x67, 0xFF, 0xFD, 0x22, 0xC0, |
| 0xE7, 0x67, 0xEF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, |
| 0x10, 0x00, 0x28, 0xC0, 0x9F, 0xAF, 0xB8, 0x05, |
| 0xE7, 0x87, 0xE0, 0x21, 0x24, 0xC0, 0x9F, 0xAF, |
| 0xA8, 0x05, 0xE7, 0x87, 0x08, 0x00, 0x24, 0xC0, |
| 0xE7, 0x67, 0xDF, 0xFF, 0x24, 0xC0, 0xC8, 0x07, |
| 0x0A, 0x00, 0xC0, 0x07, 0x00, 0x00, 0xC1, 0x07, |
| 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0x9F, 0xAF, |
| 0xB8, 0x05, 0xC0, 0x07, 0x9E, 0x00, 0x9F, 0xAF, |
| 0x44, 0x05, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, |
| 0xC0, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01, |
| 0x24, 0xC0, 0xC0, 0x77, 0x00, 0x02, 0x0F, 0xC1, |
| 0xE7, 0x67, 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x67, |
| 0xF7, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x08, 0x00, |
| 0x24, 0xC0, 0x08, 0xDA, 0x5E, 0xC1, 0xEF, 0x07, |
| 0x80, 0x00, 0x09, 0x06, 0x97, 0xCF, 0xEF, 0x07, |
| 0x01, 0x00, 0x0A, 0x06, 0x97, 0xCF, 0xEF, 0x07, |
| 0x00, 0x00, 0x0B, 0x06, 0xEF, 0x07, 0x00, 0x00, |
| 0x0A, 0x06, 0xEF, 0x67, 0x7F, 0xFF, 0x09, 0x06, |
| 0xEF, 0x07, 0x00, 0x00, 0x0D, 0x06, 0xE7, 0x67, |
| 0xEF, 0xFF, 0x28, 0xC0, 0xE7, 0x67, 0x17, 0xD8, |
| 0x24, 0xC0, 0xE7, 0x07, 0x00, 0x00, 0x1E, 0xC0, |
| 0xE7, 0x07, 0xFF, 0xFF, 0x22, 0xC0, 0x97, 0xCF, |
| 0xC8, 0x07, 0x0E, 0x06, 0x9F, 0xAF, 0xDA, 0x02, |
| 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07, |
| 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0x0E, 0x06, |
| 0xF4, 0x05, 0xE7, 0x07, 0xD6, 0x02, 0xF8, 0x05, |
| 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80, |
| 0x50, 0xAF, 0x97, 0xCF, 0x2F, 0x0C, 0x02, 0x00, |
| 0x07, 0x06, 0x2F, 0x0C, 0x04, 0x00, 0x06, 0x06, |
| 0xE7, 0x07, 0x00, 0x00, 0xF2, 0x05, 0xE7, 0x07, |
| 0x10, 0x00, 0xF6, 0x05, 0xE7, 0x07, 0xE2, 0x05, |
| 0xF4, 0x05, 0xE7, 0x07, 0xCE, 0x02, 0xF8, 0x05, |
| 0xC8, 0x07, 0xF2, 0x05, 0xC1, 0x07, 0x00, 0x80, |
| 0x51, 0xAF, 0x97, 0xCF, 0x9F, 0xAF, 0x66, 0x04, |
| 0x9F, 0xAF, 0x1A, 0x03, 0x59, 0xAF, 0x97, 0xCF, |
| 0xC0, 0x07, 0x0E, 0x00, 0xC1, 0x0B, 0x0C, 0x06, |
| 0x41, 0xD1, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, |
| 0x3C, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0x68, 0x00, |
| 0xC0, 0x07, 0x3B, 0x00, 0x9F, 0xAF, 0x44, 0x05, |
| 0x6F, 0x00, 0x0C, 0x06, 0x68, 0x00, 0xE0, 0x07, |
| 0x04, 0x01, 0xE8, 0x0B, 0x0A, 0x06, 0xE8, 0x07, |
| 0x00, 0x00, 0xE0, 0x07, 0x00, 0x02, 0xE0, 0x07, |
| 0xEC, 0x01, 0xE0, 0x07, 0xFC, 0xFF, 0x97, 0xCF, |
| 0xE7, 0x07, 0xFF, 0xFF, 0xFA, 0x05, 0xEF, 0x07, |
| 0x00, 0x00, 0x0B, 0x06, 0xE7, 0x07, 0x0E, 0x06, |
| 0x24, 0x01, 0xE7, 0x07, 0x0E, 0x06, 0xFE, 0x05, |
| 0xE7, 0x07, 0x40, 0x00, 0x26, 0x01, 0xE7, 0x07, |
| 0x40, 0x00, 0x04, 0x06, 0xE7, 0x07, 0x07, 0x00, |
| 0x92, 0xC0, 0x97, 0xCF, 0xEF, 0x07, 0x02, 0x00, |
| 0x0B, 0x06, 0x9F, 0xAF, 0x78, 0x01, 0xEF, 0x77, |
| 0x80, 0x00, 0x07, 0x06, 0x9F, 0xC0, 0x14, 0x04, |
| 0xEF, 0x77, 0x01, 0x00, 0x07, 0x06, 0x37, 0xC0, |
| 0xEF, 0x77, 0x01, 0x00, 0x0D, 0x06, 0x0F, 0xC1, |
| 0xEF, 0x07, 0x01, 0x00, 0x0D, 0x06, 0xC0, 0x07, |
| 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, 0x9F, 0xAF, |
| 0x28, 0x05, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07, |
| 0x02, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, |
| 0xFF, 0x4F, 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, |
| 0x38, 0x00, 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x77, |
| 0x03, 0x00, 0x02, 0xC1, 0x08, 0xDA, 0x75, 0xC1, |
| 0xC1, 0x77, 0x01, 0x00, 0x0A, 0xC1, 0xC0, 0x07, |
| 0x01, 0x00, 0xC1, 0x07, 0x02, 0x00, 0x9F, 0xAF, |
| 0x28, 0x05, 0xEF, 0x07, 0x01, 0x00, 0x06, 0x06, |
| 0x2C, 0xCF, 0xC0, 0x07, 0x01, 0x00, 0xC1, 0x07, |
| 0x04, 0x00, 0x9F, 0xAF, 0x28, 0x05, 0xEF, 0x07, |
| 0x00, 0x00, 0x06, 0x06, 0x22, 0xCF, 0xEF, 0x07, |
| 0x00, 0x00, 0x0D, 0x06, 0xEF, 0x57, 0x01, 0x00, |
| 0x06, 0x06, 0x1B, 0xC0, 0xC0, 0x07, 0x01, 0x00, |
| 0xC1, 0x07, 0x01, 0x00, 0x9F, 0xAF, 0x28, 0x05, |
| 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, 0x30, 0x00, |
| 0x9F, 0xAF, 0x28, 0x05, 0xC8, 0x07, 0xFF, 0x4F, |
| 0x9F, 0xAF, 0xA8, 0x05, 0xC0, 0x07, 0x38, 0x00, |
| 0x9F, 0xAF, 0x44, 0x05, 0xC1, 0x67, 0x03, 0x00, |
| 0xC1, 0x57, 0x03, 0x00, 0x02, 0xC0, 0x08, 0xDA, |
| 0x73, 0xC1, 0xC0, 0x07, 0x02, 0x00, 0xC1, 0x07, |
| 0x12, 0x00, 0xEF, 0x57, 0x00, 0x00, 0x06, 0x06, |
| 0x02, 0xC0, 0xC1, 0x07, 0x23, 0x00, 0x9F, 0xAF, |
| 0x28, 0x05, 0xC0, 0x07, 0x14, 0x00, 0xC1, 0x0B, |
| 0xEA, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, |
| 0x3E, 0x00, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x09, |
| 0xE4, 0x05, 0xFA, 0x05, 0x27, 0xD8, 0xFA, 0x05, |
| 0xE7, 0x07, 0x0E, 0x06, 0xFC, 0x05, 0xE7, 0x07, |
| 0x4E, 0x06, 0x00, 0x06, 0xE7, 0x07, 0x40, 0x00, |
| 0x02, 0x06, 0x9F, 0xAF, 0x66, 0x05, 0x9F, 0xAF, |
| 0xC6, 0x00, 0x97, 0xCF, 0xC1, 0x0B, 0xE2, 0x05, |
| 0x41, 0xD0, 0x01, 0xD2, 0xC1, 0x17, 0x23, 0x00, |
| 0x9F, 0xAF, 0xDC, 0x04, 0xC0, 0x07, 0x04, 0x00, |
| 0xC1, 0x0B, 0xE3, 0x05, 0x9F, 0xAF, 0x28, 0x05, |
| 0xC0, 0x07, 0x06, 0x00, 0xC1, 0x09, 0xE6, 0x05, |
| 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x07, 0x00, |
| 0xC1, 0x09, 0xE6, 0x05, 0xC1, 0xD1, 0x9F, 0xAF, |
| 0x28, 0x05, 0xC0, 0x07, 0x0B, 0x00, 0xC1, 0x09, |
| 0xE8, 0x05, 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, |
| 0x0C, 0x00, 0xC1, 0x09, 0xE8, 0x05, 0xC1, 0xD1, |
| 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0D, 0x00, |
| 0xC1, 0x07, 0x09, 0x00, 0x9F, 0xAF, 0x28, 0x05, |
| 0xC0, 0x07, 0x03, 0x00, 0xC1, 0x07, 0x32, 0x00, |
| 0x9F, 0xAF, 0x28, 0x05, 0xC0, 0x07, 0x0F, 0x00, |
| 0xC1, 0x07, 0x00, 0x00, 0x9F, 0xAF, 0x28, 0x05, |
| 0x97, 0xCF, 0xE7, 0x67, 0xFF, 0xD9, 0x24, 0xC0, |
| 0xC8, 0x07, 0x0A, 0x00, 0x40, 0x00, 0xC0, 0x67, |
| 0x00, 0x02, 0x27, 0x80, 0x24, 0xC0, 0xE7, 0x87, |
| 0x00, 0x04, 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xF9, |
| 0x24, 0xC0, 0x01, 0xD2, 0x08, 0xDA, 0x72, 0xC1, |
| 0xE7, 0x87, 0x00, 0x20, 0x24, 0xC0, 0x97, 0xCF, |
| 0x27, 0x00, 0x1E, 0xC0, 0xE7, 0x87, 0xFF, 0x00, |
| 0x22, 0xC0, 0xE7, 0x67, 0x7F, 0xFF, 0x24, 0xC0, |
| 0xE7, 0x87, 0x80, 0x00, 0x24, 0xC0, 0xE7, 0x87, |
| 0x80, 0x00, 0x24, 0xC0, 0x97, 0xCF, 0x9F, 0xAF, |
| 0x0A, 0x05, 0x67, 0x00, 0x1E, 0xC0, 0xE7, 0x67, |
| 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, |
| 0x24, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, |
| 0x97, 0xCF, 0x9F, 0xAF, 0x0A, 0x05, 0xE7, 0x67, |
| 0x00, 0xFF, 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, |
| 0x24, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, |
| 0xC1, 0x09, 0x20, 0xC0, 0xE7, 0x87, 0x00, 0x01, |
| 0x24, 0xC0, 0x97, 0xCF, 0xC0, 0x07, 0x40, 0x00, |
| 0xC8, 0x09, 0xFC, 0x05, 0xE7, 0x67, 0x00, 0xFF, |
| 0x22, 0xC0, 0xE7, 0x67, 0xFF, 0xFE, 0x24, 0xC0, |
| 0xE7, 0x67, 0xBF, 0xFF, 0x24, 0xC0, 0xE7, 0x67, |
| 0xBF, 0xFF, 0x24, 0xC0, 0x00, 0xDA, 0xE8, 0x09, |
| 0x20, 0xC0, 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, |
| 0xE7, 0x87, 0x40, 0x00, 0x24, 0xC0, 0x00, 0xDA, |
| 0xE8, 0x09, 0x20, 0xC0, 0x6D, 0xC1, 0xE7, 0x87, |
| 0x00, 0x01, 0x24, 0xC0, 0x97, 0xCF, 0xE7, 0x07, |
| 0x32, 0x00, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80, |
| 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0xE7, 0x07, |
| 0x20, 0x4E, 0x12, 0xC0, 0xE7, 0x77, 0x00, 0x80, |
| 0x12, 0xC0, 0x7C, 0xC0, 0x97, 0xCF, 0x09, 0x02, |
| 0x19, 0x00, 0x01, 0x01, 0x00, 0x80, 0x96, 0x09, |
| 0x04, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, |
| 0x07, 0x05, 0x81, 0x02, 0x40, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| }; |
| |
| static unsigned char setup5[] = { |
| 0xB6, 0xC3, 0x2F, 0x01, 0x03, 0x64, 0x0E, 0x00, |
| 0x14, 0x00, 0x1A, 0x00, 0x20, 0x00, 0x26, 0x00, |
| 0x4A, 0x00, 0x64, 0x00, 0x6A, 0x00, 0x92, 0x00, |
| 0x9A, 0x00, 0xA0, 0x00, 0xB2, 0x00, 0xB8, 0x00, |
| 0xBE, 0x00, 0xC2, 0x00, 0xC8, 0x00, 0xCE, 0x00, |
| 0xDC, 0x00, 0xDA, 0x00, 0xE2, 0x00, 0xE0, 0x00, |
| 0xE8, 0x00, 0xE6, 0x00, 0xEE, 0x00, 0xEC, 0x00, |
| 0xF2, 0x00, 0xF8, 0x00, 0x02, 0x01, 0x0A, 0x01, |
| 0x0E, 0x01, 0x12, 0x01, 0x1E, 0x01, 0x22, 0x01, |
| 0x28, 0x01, 0x2C, 0x01, 0x32, 0x01, 0x36, 0x01, |
| 0x44, 0x01, 0x50, 0x01, 0x5E, 0x01, 0x72, 0x01, |
| 0x76, 0x01, 0x7A, 0x01, 0x80, 0x01, 0x88, 0x01, |
| 0x8C, 0x01, 0x94, 0x01, 0x9C, 0x01, 0xA0, 0x01, |
| 0xA4, 0x01, 0xAA, 0x01, 0xB0, 0x01, 0xB4, 0x01, |
| 0xBA, 0x01, 0xD0, 0x01, 0xDA, 0x01, 0xF6, 0x01, |
| 0xFA, 0x01, 0x02, 0x02, 0x34, 0x02, 0x3C, 0x02, |
| 0x44, 0x02, 0x4A, 0x02, 0x50, 0x02, 0x56, 0x02, |
| 0x74, 0x02, 0x78, 0x02, 0x7E, 0x02, 0x84, 0x02, |
| 0x8A, 0x02, 0x88, 0x02, 0x90, 0x02, 0x8E, 0x02, |
| 0x94, 0x02, 0xA2, 0x02, 0xA8, 0x02, 0xAE, 0x02, |
| 0xB4, 0x02, 0xBA, 0x02, 0xB8, 0x02, 0xC0, 0x02, |
| 0xBE, 0x02, 0xC4, 0x02, 0xD0, 0x02, 0xD4, 0x02, |
| 0xE0, 0x02, 0xE6, 0x02, 0xEE, 0x02, 0xF8, 0x02, |
| 0xFC, 0x02, 0x06, 0x03, 0x1E, 0x03, 0x24, 0x03, |
| 0x28, 0x03, 0x30, 0x03, 0x2E, 0x03, 0x3C, 0x03, |
| 0x4A, 0x03, 0x4E, 0x03, 0x54, 0x03, 0x58, 0x03, |
| 0x5E, 0x03, 0x66, 0x03, 0x6E, 0x03, 0x7A, 0x03, |
| 0x86, 0x03, 0x8E, 0x03, 0x96, 0x03, 0xB2, 0x03, |
| 0xB8, 0x03, 0xC6, 0x03, 0xCC, 0x03, 0xD4, 0x03, |
| 0xDA, 0x03, 0xE8, 0x03, 0xF4, 0x03, 0xFC, 0x03, |
| 0x04, 0x04, 0x20, 0x04, 0x2A, 0x04, 0x32, 0x04, |
| 0x36, 0x04, 0x3E, 0x04, 0x44, 0x04, 0x42, 0x04, |
| 0x48, 0x04, 0x4E, 0x04, 0x4C, 0x04, 0x54, 0x04, |
| 0x52, 0x04, 0x5A, 0x04, 0x5E, 0x04, 0x62, 0x04, |
| 0x68, 0x04, 0x74, 0x04, 0x7C, 0x04, 0x80, 0x04, |
| 0x88, 0x04, 0x8C, 0x04, 0x94, 0x04, 0x9A, 0x04, |
| 0xA2, 0x04, 0xA6, 0x04, 0xAE, 0x04, 0xB4, 0x04, |
| 0xC0, 0x04, 0xCC, 0x04, 0xD8, 0x04, 0x2A, 0x05, |
| 0x46, 0x05, 0x6C, 0x05, 0x00, 0x00 |
| }; |
| |
| /* rvmalloc / rvfree copied from usbvideo.c |
| * |
| * Not sure why these are not yet non-statics which I can reference through |
| * usbvideo.h the same as it is in 2.4.20. I bet this will get fixed sometime |
| * in the future. |
| * |
| */ |
| static void *rvmalloc(unsigned long size) |
| { |
| void *mem; |
| unsigned long adr; |
| |
| size = PAGE_ALIGN(size); |
| mem = vmalloc_32(size); |
| if (!mem) |
| return NULL; |
| |
| memset(mem, 0, size); /* Clear the ram out, no junk to the user */ |
| adr = (unsigned long) mem; |
| while (size > 0) { |
| SetPageReserved(vmalloc_to_page((void *)adr)); |
| adr += PAGE_SIZE; |
| size -= PAGE_SIZE; |
| } |
| |
| return mem; |
| } |
| |
| static void rvfree(void *mem, unsigned long size) |
| { |
| unsigned long adr; |
| |
| if (!mem) |
| return; |
| |
| adr = (unsigned long) mem; |
| while ((long) size > 0) { |
| ClearPageReserved(vmalloc_to_page((void *)adr)); |
| adr += PAGE_SIZE; |
| size -= PAGE_SIZE; |
| } |
| vfree(mem); |
| } |
| |
| struct vicam_camera { |
| u16 shutter_speed; // capture shutter speed |
| u16 gain; // capture gain |
| |
| u8 *raw_image; // raw data captured from the camera |
| u8 *framebuf; // processed data in RGB24 format |
| u8 *cntrlbuf; // area used to send control msgs |
| |
| struct video_device vdev; // v4l video device |
| struct usb_device *udev; // usb device |
| |
| /* guard against simultaneous accesses to the camera */ |
| struct semaphore cam_lock; |
| |
| int is_initialized; |
| u8 open_count; |
| u8 bulkEndpoint; |
| int needsDummyRead; |
| |
| #if defined(CONFIG_VIDEO_PROC_FS) |
| struct proc_dir_entry *proc_dir; |
| #endif |
| |
| }; |
| |
| static int vicam_probe( struct usb_interface *intf, const struct usb_device_id *id); |
| static void vicam_disconnect(struct usb_interface *intf); |
| static void read_frame(struct vicam_camera *cam, int framenum); |
| static void vicam_decode_color(const u8 *, u8 *); |
| |
| static int __send_control_msg(struct vicam_camera *cam, |
| u8 request, |
| u16 value, |
| u16 index, |
| unsigned char *cp, |
| u16 size) |
| { |
| int status; |
| |
| /* cp must be memory that has been allocated by kmalloc */ |
| |
| status = usb_control_msg(cam->udev, |
| usb_sndctrlpipe(cam->udev, 0), |
| request, |
| USB_DIR_OUT | USB_TYPE_VENDOR | |
| USB_RECIP_DEVICE, value, index, |
| cp, size, 1000); |
| |
| status = min(status, 0); |
| |
| if (status < 0) { |
| printk(KERN_INFO "Failed sending control message, error %d.\n", |
| status); |
| } |
| |
| return status; |
| } |
| |
| static int send_control_msg(struct vicam_camera *cam, |
| u8 request, |
| u16 value, |
| u16 index, |
| unsigned char *cp, |
| u16 size) |
| { |
| int status = -ENODEV; |
| down(&cam->cam_lock); |
| if (cam->udev) { |
| status = __send_control_msg(cam, request, value, |
| index, cp, size); |
| } |
| up(&cam->cam_lock); |
| return status; |
| } |
| static int |
| initialize_camera(struct vicam_camera *cam) |
| { |
| const struct { |
| u8 *data; |
| u32 size; |
| } firmware[] = { |
| { .data = setup1, .size = sizeof(setup1) }, |
| { .data = setup2, .size = sizeof(setup2) }, |
| { .data = setup3, .size = sizeof(setup3) }, |
| { .data = setup4, .size = sizeof(setup4) }, |
| { .data = setup5, .size = sizeof(setup5) }, |
| { .data = setup3, .size = sizeof(setup3) }, |
| { .data = NULL, .size = 0 } |
| }; |
| |
| int err, i; |
| |
| for (i = 0, err = 0; firmware[i].data && !err; i++) { |
| memcpy(cam->cntrlbuf, firmware[i].data, firmware[i].size); |
| |
| err = send_control_msg(cam, 0xff, 0, 0, |
| cam->cntrlbuf, firmware[i].size); |
| } |
| |
| return err; |
| } |
| |
| static int |
| set_camera_power(struct vicam_camera *cam, int state) |
| { |
| int status; |
| |
| if ((status = send_control_msg(cam, 0x50, state, 0, NULL, 0)) < 0) |
| return status; |
| |
| if (state) { |
| send_control_msg(cam, 0x55, 1, 0, NULL, 0); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| vicam_ioctl(struct inode *inode, struct file *file, unsigned int ioctlnr, unsigned long arg) |
| { |
| void __user *user_arg = (void __user *)arg; |
| struct vicam_camera *cam = file->private_data; |
| int retval = 0; |
| |
| if (!cam) |
| return -ENODEV; |
| |
| switch (ioctlnr) { |
| /* query capabilities */ |
| case VIDIOCGCAP: |
| { |
| struct video_capability b; |
| |
| DBG("VIDIOCGCAP\n"); |
| memset(&b, 0, sizeof(b)); |
| strcpy(b.name, "ViCam-based Camera"); |
| b.type = VID_TYPE_CAPTURE; |
| b.channels = 1; |
| b.audios = 0; |
| b.maxwidth = 320; /* VIDEOSIZE_CIF */ |
| b.maxheight = 240; |
| b.minwidth = 320; /* VIDEOSIZE_48_48 */ |
| b.minheight = 240; |
| |
| if (copy_to_user(user_arg, &b, sizeof(b))) |
| retval = -EFAULT; |
| |
| break; |
| } |
| /* get/set video source - we are a camera and nothing else */ |
| case VIDIOCGCHAN: |
| { |
| struct video_channel v; |
| |
| DBG("VIDIOCGCHAN\n"); |
| if (copy_from_user(&v, user_arg, sizeof(v))) { |
| retval = -EFAULT; |
| break; |
| } |
| if (v.channel != 0) { |
| retval = -EINVAL; |
| break; |
| } |
| |
| v.channel = 0; |
| strcpy(v.name, "Camera"); |
| v.tuners = 0; |
| v.flags = 0; |
| v.type = VIDEO_TYPE_CAMERA; |
| v.norm = 0; |
| |
| if (copy_to_user(user_arg, &v, sizeof(v))) |
| retval = -EFAULT; |
| break; |
| } |
| |
| case VIDIOCSCHAN: |
| { |
| int v; |
| |
| if (copy_from_user(&v, user_arg, sizeof(v))) |
| retval = -EFAULT; |
| DBG("VIDIOCSCHAN %d\n", v); |
| |
| if (retval == 0 && v != 0) |
| retval = -EINVAL; |
| |
| break; |
| } |
| |
| /* image properties */ |
| case VIDIOCGPICT: |
| { |
| struct video_picture vp; |
| DBG("VIDIOCGPICT\n"); |
| memset(&vp, 0, sizeof (struct video_picture)); |
| vp.brightness = cam->gain << 8; |
| vp.depth = 24; |
| vp.palette = VIDEO_PALETTE_RGB24; |
| if (copy_to_user(user_arg, &vp, sizeof (struct video_picture))) |
| retval = -EFAULT; |
| break; |
| } |
| |
| case VIDIOCSPICT: |
| { |
| struct video_picture vp; |
| |
| if (copy_from_user(&vp, user_arg, sizeof(vp))) { |
| retval = -EFAULT; |
| break; |
| } |
| |
| DBG("VIDIOCSPICT depth = %d, pal = %d\n", vp.depth, |
| vp.palette); |
| |
| cam->gain = vp.brightness >> 8; |
| |
| if (vp.depth != 24 |
| || vp.palette != VIDEO_PALETTE_RGB24) |
| retval = -EINVAL; |
| |
| break; |
| } |
| |
| /* get/set capture window */ |
| case VIDIOCGWIN: |
| { |
| struct video_window vw; |
| vw.x = 0; |
| vw.y = 0; |
| vw.width = 320; |
| vw.height = 240; |
| vw.chromakey = 0; |
| vw.flags = 0; |
| vw.clips = NULL; |
| vw.clipcount = 0; |
| |
| DBG("VIDIOCGWIN\n"); |
| |
| if (copy_to_user(user_arg, (void *)&vw, sizeof(vw))) |
| retval = -EFAULT; |
| |
| // I'm not sure what the deal with a capture window is, it is very poorly described |
| // in the doc. So I won't support it now. |
| break; |
| } |
| |
| case VIDIOCSWIN: |
| { |
| |
| struct video_window vw; |
| |
| if (copy_from_user(&vw, user_arg, sizeof(vw))) { |
| retval = -EFAULT; |
| break; |
| } |
| |
| DBG("VIDIOCSWIN %d x %d\n", vw.width, vw.height); |
| |
| if ( vw.width != 320 || vw.height != 240 ) |
| retval = -EFAULT; |
| |
| break; |
| } |
| |
| /* mmap interface */ |
| case VIDIOCGMBUF: |
| { |
| struct video_mbuf vm; |
| int i; |
| |
| DBG("VIDIOCGMBUF\n"); |
| memset(&vm, 0, sizeof (vm)); |
| vm.size = |
| VICAM_MAX_FRAME_SIZE * VICAM_FRAMES; |
| vm.frames = VICAM_FRAMES; |
| for (i = 0; i < VICAM_FRAMES; i++) |
| vm.offsets[i] = VICAM_MAX_FRAME_SIZE * i; |
| |
| if (copy_to_user(user_arg, (void *)&vm, sizeof(vm))) |
| retval = -EFAULT; |
| |
| break; |
| } |
| |
| case VIDIOCMCAPTURE: |
| { |
| struct video_mmap vm; |
| // int video_size; |
| |
| if (copy_from_user((void *)&vm, user_arg, sizeof(vm))) { |
| retval = -EFAULT; |
| break; |
| } |
| |
| DBG("VIDIOCMCAPTURE frame=%d, height=%d, width=%d, format=%d.\n",vm.frame,vm.width,vm.height,vm.format); |
| |
| if ( vm.frame >= VICAM_FRAMES || vm.format != VIDEO_PALETTE_RGB24 ) |
| retval = -EINVAL; |
| |
| // in theory right here we'd start the image capturing |
| // (fill in a bulk urb and submit it asynchronously) |
| // |
| // Instead we're going to do a total hack job for now and |
| // retrieve the frame in VIDIOCSYNC |
| |
| break; |
| } |
| |
| case VIDIOCSYNC: |
| { |
| int frame; |
| |
| if (copy_from_user((void *)&frame, user_arg, sizeof(int))) { |
| retval = -EFAULT; |
| break; |
| } |
| DBG("VIDIOCSYNC: %d\n", frame); |
| |
| read_frame(cam, frame); |
| vicam_decode_color(cam->raw_image, |
| cam->framebuf + |
| frame * VICAM_MAX_FRAME_SIZE ); |
| |
| 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; |
| default: |
| retval = -ENOIOCTLCMD; |
| break; |
| } |
| |
| return retval; |
| } |
| |
| static int |
| vicam_open(struct inode *inode, struct file *file) |
| { |
| struct video_device *dev = video_devdata(file); |
| struct vicam_camera *cam = |
| (struct vicam_camera *) dev->priv; |
| DBG("open\n"); |
| |
| if (!cam) { |
| printk(KERN_ERR |
| "vicam video_device improperly initialized"); |
| } |
| |
| /* the videodev_lock held above us protects us from |
| * simultaneous opens...for now. we probably shouldn't |
| * rely on this fact forever. |
| */ |
| |
| if (cam->open_count > 0) { |
| printk(KERN_INFO |
| "vicam_open called on already opened camera"); |
| return -EBUSY; |
| } |
| |
| cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL); |
| if (!cam->raw_image) { |
| return -ENOMEM; |
| } |
| |
| cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); |
| if (!cam->framebuf) { |
| kfree(cam->raw_image); |
| return -ENOMEM; |
| } |
| |
| cam->cntrlbuf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
| if (!cam->cntrlbuf) { |
| kfree(cam->raw_image); |
| rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); |
| return -ENOMEM; |
| } |
| |
| // First upload firmware, then turn the camera on |
| |
| if (!cam->is_initialized) { |
| initialize_camera(cam); |
| |
| cam->is_initialized = 1; |
| } |
| |
| set_camera_power(cam, 1); |
| |
| cam->needsDummyRead = 1; |
| cam->open_count++; |
| |
| file->private_data = cam; |
| |
| return 0; |
| } |
| |
| static int |
| vicam_close(struct inode *inode, struct file *file) |
| { |
| struct vicam_camera *cam = file->private_data; |
| int open_count; |
| struct usb_device *udev; |
| |
| DBG("close\n"); |
| |
| /* it's not the end of the world if |
| * we fail to turn the camera off. |
| */ |
| |
| set_camera_power(cam, 0); |
| |
| kfree(cam->raw_image); |
| rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); |
| kfree(cam->cntrlbuf); |
| |
| down(&cam->cam_lock); |
| |
| cam->open_count--; |
| open_count = cam->open_count; |
| udev = cam->udev; |
| |
| up(&cam->cam_lock); |
| |
| if (!open_count && !udev) { |
| kfree(cam); |
| } |
| |
| return 0; |
| } |
| |
| static void vicam_decode_color(const u8 *data, u8 *rgb) |
| { |
| /* vicam_decode_color - Convert from Vicam Y-Cr-Cb to RGB |
| * Copyright (C) 2002 Monroe Williams (monroe@pobox.com) |
| */ |
| |
| int i, prevY, nextY; |
| |
| prevY = 512; |
| nextY = 512; |
| |
| data += VICAM_HEADER_SIZE; |
| |
| for( i = 0; i < 240; i++, data += 512 ) { |
| const int y = ( i * 242 ) / 240; |
| |
| int j, prevX, nextX; |
| int Y, Cr, Cb; |
| |
| if ( y == 242 - 1 ) { |
| nextY = -512; |
| } |
| |
| prevX = 1; |
| nextX = 1; |
| |
| for ( j = 0; j < 320; j++, rgb += 3 ) { |
| const int x = ( j * 512 ) / 320; |
| const u8 * const src = &data[x]; |
| |
| if ( x == 512 - 1 ) { |
| nextX = -1; |
| } |
| |
| Cr = ( src[prevX] - src[0] ) + |
| ( src[nextX] - src[0] ); |
| Cr /= 2; |
| |
| Cb = ( src[prevY] - src[prevX + prevY] ) + |
| ( src[prevY] - src[nextX + prevY] ) + |
| ( src[nextY] - src[prevX + nextY] ) + |
| ( src[nextY] - src[nextX + nextY] ); |
| Cb /= 4; |
| |
| Y = 1160 * ( src[0] + ( Cr / 2 ) - 16 ); |
| |
| if ( i & 1 ) { |
| int Ct = Cr; |
| Cr = Cb; |
| Cb = Ct; |
| } |
| |
| if ( ( x ^ i ) & 1 ) { |
| Cr = -Cr; |
| Cb = -Cb; |
| } |
| |
| rgb[0] = clamp( ( ( Y + ( 2017 * Cb ) ) + |
| 500 ) / 900, 0, 255 ); |
| rgb[1] = clamp( ( ( Y - ( 392 * Cb ) - |
| ( 813 * Cr ) ) + |
| 500 ) / 1000, 0, 255 ); |
| rgb[2] = clamp( ( ( Y + ( 1594 * Cr ) ) + |
| 500 ) / 1300, 0, 255 ); |
| |
| prevX = -1; |
| } |
| |
| prevY = -512; |
| } |
| } |
| |
| static void |
| read_frame(struct vicam_camera *cam, int framenum) |
| { |
| unsigned char *request = cam->cntrlbuf; |
| int realShutter; |
| int n; |
| int actual_length; |
| |
| if (cam->needsDummyRead) { |
| cam->needsDummyRead = 0; |
| read_frame(cam, framenum); |
| } |
| |
| memset(request, 0, 16); |
| request[0] = cam->gain; // 0 = 0% gain, FF = 100% gain |
| |
| request[1] = 0; // 512x242 capture |
| |
| request[2] = 0x90; // the function of these two bytes |
| request[3] = 0x07; // is not yet understood |
| |
| if (cam->shutter_speed > 60) { |
| // Short exposure |
| realShutter = |
| ((-15631900 / cam->shutter_speed) + 260533) / 1000; |
| request[4] = realShutter & 0xFF; |
| request[5] = (realShutter >> 8) & 0xFF; |
| request[6] = 0x03; |
| request[7] = 0x01; |
| } else { |
| // Long exposure |
| realShutter = 15600 / cam->shutter_speed - 1; |
| request[4] = 0; |
| request[5] = 0; |
| request[6] = realShutter & 0xFF; |
| request[7] = realShutter >> 8; |
| } |
| |
| // Per John Markus Bjørndalen, byte at index 8 causes problems if it isn't 0 |
| request[8] = 0; |
| // bytes 9-15 do not seem to affect exposure or image quality |
| |
| down(&cam->cam_lock); |
| |
| if (!cam->udev) { |
| goto done; |
| } |
| |
| n = __send_control_msg(cam, 0x51, 0x80, 0, request, 16); |
| |
| if (n < 0) { |
| printk(KERN_ERR |
| " Problem sending frame capture control message"); |
| goto done; |
| } |
| |
| n = usb_bulk_msg(cam->udev, |
| usb_rcvbulkpipe(cam->udev, cam->bulkEndpoint), |
| cam->raw_image, |
| 512 * 242 + 128, &actual_length, 10000); |
| |
| if (n < 0) { |
| printk(KERN_ERR "Problem during bulk read of frame data: %d\n", |
| n); |
| } |
| |
| done: |
| up(&cam->cam_lock); |
| } |
| |
| static ssize_t |
| vicam_read( struct file *file, char __user *buf, size_t count, loff_t *ppos ) |
| { |
| struct vicam_camera *cam = file->private_data; |
| |
| DBG("read %d bytes.\n", (int) count); |
| |
| if (*ppos >= VICAM_MAX_FRAME_SIZE) { |
| *ppos = 0; |
| return 0; |
| } |
| |
| if (*ppos == 0) { |
| read_frame(cam, 0); |
| vicam_decode_color(cam->raw_image, |
| cam->framebuf + |
| 0 * VICAM_MAX_FRAME_SIZE); |
| } |
| |
| count = min_t(size_t, count, VICAM_MAX_FRAME_SIZE - *ppos); |
| |
| if (copy_to_user(buf, &cam->framebuf[*ppos], count)) { |
| count = -EFAULT; |
| } else { |
| *ppos += count; |
| } |
| |
| if (count == VICAM_MAX_FRAME_SIZE) { |
| *ppos = 0; |
| } |
| |
| return count; |
| } |
| |
| |
| static int |
| vicam_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| // TODO: allocate the raw frame buffer if necessary |
| unsigned long page, pos; |
| unsigned long start = vma->vm_start; |
| unsigned long size = vma->vm_end-vma->vm_start; |
| struct vicam_camera *cam = file->private_data; |
| |
| if (!cam) |
| return -ENODEV; |
| |
| DBG("vicam_mmap: %ld\n", size); |
| |
| /* We let mmap allocate as much as it wants because Linux was adding 2048 bytes |
| * to the size the application requested for mmap and it was screwing apps up. |
| if (size > VICAM_FRAMES*VICAM_MAX_FRAME_SIZE) |
| return -EINVAL; |
| */ |
| |
| pos = (unsigned long)cam->framebuf; |
| while (size > 0) { |
| page = vmalloc_to_pfn((void *)pos); |
| if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) |
| return -EAGAIN; |
| |
| start += PAGE_SIZE; |
| pos += PAGE_SIZE; |
| if (size > PAGE_SIZE) |
| size -= PAGE_SIZE; |
| else |
| size = 0; |
| } |
| |
| return 0; |
| } |
| |
| #if defined(CONFIG_VIDEO_PROC_FS) |
| |
| static struct proc_dir_entry *vicam_proc_root = NULL; |
| |
| static int vicam_read_helper(char *page, char **start, off_t off, |
| int count, int *eof, int value) |
| { |
| char *out = page; |
| int len; |
| |
| out += sprintf(out, "%d",value); |
| |
| len = out - page; |
| len -= off; |
| if (len < count) { |
| *eof = 1; |
| if (len <= 0) |
| return 0; |
| } else |
| len = count; |
| |
| *start = page + off; |
| return len; |
| } |
| |
| static int vicam_read_proc_shutter(char *page, char **start, off_t off, |
| int count, int *eof, void *data) |
| { |
| return vicam_read_helper(page,start,off,count,eof, |
| ((struct vicam_camera *)data)->shutter_speed); |
| } |
| |
| static int vicam_read_proc_gain(char *page, char **start, off_t off, |
| int count, int *eof, void *data) |
| { |
| return vicam_read_helper(page,start,off,count,eof, |
| ((struct vicam_camera *)data)->gain); |
| } |
| |
| static int |
| vicam_write_proc_shutter(struct file *file, const char *buffer, |
| unsigned long count, void *data) |
| { |
| u16 stmp; |
| char kbuf[8]; |
| struct vicam_camera *cam = (struct vicam_camera *) data; |
| |
| if (count > 6) |
| return -EINVAL; |
| |
| if (copy_from_user(kbuf, buffer, count)) |
| return -EFAULT; |
| |
| stmp = (u16) simple_strtoul(kbuf, NULL, 10); |
| if (stmp < 4 || stmp > 32000) |
| return -EINVAL; |
| |
| cam->shutter_speed = stmp; |
| |
| return count; |
| } |
| |
| static int |
| vicam_write_proc_gain(struct file *file, const char *buffer, |
| unsigned long count, void *data) |
| { |
| u16 gtmp; |
| char kbuf[8]; |
| |
| struct vicam_camera *cam = (struct vicam_camera *) data; |
| |
| if (count > 4) |
| return -EINVAL; |
| |
| if (copy_from_user(kbuf, buffer, count)) |
| return -EFAULT; |
| |
| gtmp = (u16) simple_strtoul(kbuf, NULL, 10); |
| if (gtmp > 255) |
| return -EINVAL; |
| cam->gain = gtmp; |
| |
| return count; |
| } |
| |
| static void |
| vicam_create_proc_root(void) |
| { |
| vicam_proc_root = create_proc_entry("video/vicam", S_IFDIR, 0); |
| |
| if (vicam_proc_root) |
| vicam_proc_root->owner = THIS_MODULE; |
| else |
| printk(KERN_ERR |
| "could not create /proc entry for vicam!"); |
| } |
| |
| static void |
| vicam_destroy_proc_root(void) |
| { |
| if (vicam_proc_root) |
| remove_proc_entry("video/vicam", 0); |
| } |
| |
| static void |
| vicam_create_proc_entry(struct vicam_camera *cam) |
| { |
| char name[64]; |
| struct proc_dir_entry *ent; |
| |
| DBG(KERN_INFO "vicam: creating proc entry\n"); |
| |
| if (!vicam_proc_root || !cam) { |
| printk(KERN_INFO |
| "vicam: could not create proc entry, %s pointer is null.\n", |
| (!cam ? "camera" : "root")); |
| return; |
| } |
| |
| sprintf(name, "video%d", cam->vdev.minor); |
| |
| cam->proc_dir = create_proc_entry(name, S_IFDIR, vicam_proc_root); |
| |
| if ( !cam->proc_dir ) |
| return; // FIXME: We should probably return an error here |
| |
| ent = create_proc_entry("shutter", S_IFREG | S_IRUGO | S_IWUSR, |
| cam->proc_dir); |
| if (ent) { |
| ent->data = cam; |
| ent->read_proc = vicam_read_proc_shutter; |
| ent->write_proc = vicam_write_proc_shutter; |
| ent->size = 64; |
| } |
| |
| ent = create_proc_entry("gain", S_IFREG | S_IRUGO | S_IWUSR, |
| cam->proc_dir); |
| if (ent) { |
| ent->data = cam; |
| ent->read_proc = vicam_read_proc_gain; |
| ent->write_proc = vicam_write_proc_gain; |
| ent->size = 64; |
| } |
| } |
| |
| static void |
| vicam_destroy_proc_entry(void *ptr) |
| { |
| struct vicam_camera *cam = (struct vicam_camera *) ptr; |
| char name[16]; |
| |
| if ( !cam->proc_dir ) |
| return; |
| |
| sprintf(name, "video%d", cam->vdev.minor); |
| remove_proc_entry("shutter", cam->proc_dir); |
| remove_proc_entry("gain", cam->proc_dir); |
| remove_proc_entry(name,vicam_proc_root); |
| cam->proc_dir = NULL; |
| |
| } |
| |
| #else |
| static inline void vicam_create_proc_root(void) { } |
| static inline void vicam_destroy_proc_root(void) { } |
| static inline void vicam_create_proc_entry(struct vicam_camera *cam) { } |
| static inline void vicam_destroy_proc_entry(void *ptr) { } |
| #endif |
| |
| static struct file_operations vicam_fops = { |
| .owner = THIS_MODULE, |
| .open = vicam_open, |
| .release = vicam_close, |
| .read = vicam_read, |
| .mmap = vicam_mmap, |
| .ioctl = vicam_ioctl, |
| .llseek = no_llseek, |
| }; |
| |
| static struct video_device vicam_template = { |
| .owner = THIS_MODULE, |
| .name = "ViCam-based USB Camera", |
| .type = VID_TYPE_CAPTURE, |
| .hardware = VID_HARDWARE_VICAM, |
| .fops = &vicam_fops, |
| .minor = -1, |
| }; |
| |
| /* table of devices that work with this driver */ |
| static struct usb_device_id vicam_table[] = { |
| {USB_DEVICE(USB_VICAM_VENDOR_ID, USB_VICAM_PRODUCT_ID)}, |
| {} /* Terminating entry */ |
| }; |
| |
| MODULE_DEVICE_TABLE(usb, vicam_table); |
| |
| static struct usb_driver vicam_driver = { |
| .owner = THIS_MODULE, |
| .name = "vicam", |
| .probe = vicam_probe, |
| .disconnect = vicam_disconnect, |
| .id_table = vicam_table |
| }; |
| |
| /** |
| * vicam_probe |
| * @intf: the interface |
| * @id: the device id |
| * |
| * Called by the usb core when a new device is connected that it thinks |
| * this driver might be interested in. |
| */ |
| static int |
| vicam_probe( struct usb_interface *intf, const struct usb_device_id *id) |
| { |
| struct usb_device *dev = interface_to_usbdev(intf); |
| int bulkEndpoint = 0; |
| const struct usb_host_interface *interface; |
| const struct usb_endpoint_descriptor *endpoint; |
| struct vicam_camera *cam; |
| |
| printk(KERN_INFO "ViCam based webcam connected\n"); |
| |
| interface = intf->cur_altsetting; |
| |
| DBG(KERN_DEBUG "Interface %d. has %u. endpoints!\n", |
| interface->desc.bInterfaceNumber, (unsigned) (interface->desc.bNumEndpoints)); |
| endpoint = &interface->endpoint[0].desc; |
| |
| if ((endpoint->bEndpointAddress & 0x80) && |
| ((endpoint->bmAttributes & 3) == 0x02)) { |
| /* we found a bulk in endpoint */ |
| bulkEndpoint = endpoint->bEndpointAddress; |
| } else { |
| printk(KERN_ERR |
| "No bulk in endpoint was found ?! (this is bad)\n"); |
| } |
| |
| if ((cam = |
| kmalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) { |
| printk(KERN_WARNING |
| "could not allocate kernel memory for vicam_camera struct\n"); |
| return -ENOMEM; |
| } |
| |
| memset(cam, 0, sizeof (struct vicam_camera)); |
| |
| cam->shutter_speed = 15; |
| |
| init_MUTEX(&cam->cam_lock); |
| |
| memcpy(&cam->vdev, &vicam_template, |
| sizeof (vicam_template)); |
| cam->vdev.priv = cam; // sort of a reverse mapping for those functions that get vdev only |
| |
| cam->udev = dev; |
| cam->bulkEndpoint = bulkEndpoint; |
| |
| if (video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1) == -1) { |
| kfree(cam); |
| printk(KERN_WARNING "video_register_device failed\n"); |
| return -EIO; |
| } |
| |
| vicam_create_proc_entry(cam); |
| |
| printk(KERN_INFO "ViCam webcam driver now controlling video device %d\n",cam->vdev.minor); |
| |
| usb_set_intfdata (intf, cam); |
| |
| return 0; |
| } |
| |
| static void |
| vicam_disconnect(struct usb_interface *intf) |
| { |
| int open_count; |
| struct vicam_camera *cam = usb_get_intfdata (intf); |
| usb_set_intfdata (intf, NULL); |
| |
| /* we must unregister the device before taking its |
| * cam_lock. This is because the video open call |
| * holds the same lock as video unregister. if we |
| * unregister inside of the cam_lock and open also |
| * uses the cam_lock, we get deadlock. |
| */ |
| |
| video_unregister_device(&cam->vdev); |
| |
| /* stop the camera from being used */ |
| |
| down(&cam->cam_lock); |
| |
| /* mark the camera as gone */ |
| |
| cam->udev = NULL; |
| |
| vicam_destroy_proc_entry(cam); |
| |
| /* the only thing left to do is synchronize with |
| * our close/release function on who should release |
| * the camera memory. if there are any users using the |
| * camera, it's their job. if there are no users, |
| * it's ours. |
| */ |
| |
| open_count = cam->open_count; |
| |
| up(&cam->cam_lock); |
| |
| if (!open_count) { |
| kfree(cam); |
| } |
| |
| printk(KERN_DEBUG "ViCam-based WebCam disconnected\n"); |
| } |
| |
| /* |
| */ |
| static int __init |
| usb_vicam_init(void) |
| { |
| int retval; |
| DBG(KERN_INFO "ViCam-based WebCam driver startup\n"); |
| vicam_create_proc_root(); |
| retval = usb_register(&vicam_driver); |
| if (retval) |
| printk(KERN_WARNING "usb_register failed!\n"); |
| return retval; |
| } |
| |
| static void __exit |
| usb_vicam_exit(void) |
| { |
| DBG(KERN_INFO |
| "ViCam-based WebCam driver shutdown\n"); |
| |
| usb_deregister(&vicam_driver); |
| vicam_destroy_proc_root(); |
| } |
| |
| module_init(usb_vicam_init); |
| module_exit(usb_vicam_exit); |
| |
| MODULE_AUTHOR(DRIVER_AUTHOR); |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |