1411 lines
37 KiB
C
1411 lines
37 KiB
C
/*
|
||
* USB ViCam WebCam driver
|
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* Copyright (c) 2002 Joe Burks (jburks@wavicle.org),
|
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* Christopher L Cheney (ccheney@cheney.cx),
|
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* Pavel Machek (pavel@suse.cz),
|
||
* John Tyner (jtyner@cs.ucr.edu),
|
||
* Monroe Williams (monroe@pobox.com)
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||
*
|
||
* Supports 3COM HomeConnect PC Digital WebCam
|
||
*
|
||
* This program is free software; you can redistribute it and/or modify
|
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* it under the terms of the GNU General Public License as published by
|
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* the Free Software Foundation; either version 2 of the License, or
|
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* (at your option) any later version.
|
||
*
|
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* 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
|
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
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*
|
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* This source code is based heavily on the CPiA webcam driver which was
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* written by Peter Pregler, Scott J. Bertin and Johannes Erdfelt
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*
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* Portions of this code were also copied from usbvideo.c
|
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*
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* Special thanks to the the whole team at Sourceforge for help making
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* this driver become a reality. Notably:
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* Andy Armstrong who reverse engineered the color encoding and
|
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* Pavel Machek and Chris Cheney who worked on reverse engineering the
|
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* camera controls and wrote the first generation driver.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/videodev.h>
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#include <linux/usb.h>
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#include <linux/vmalloc.h>
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#include <linux/slab.h>
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#include <linux/proc_fs.h>
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#include <linux/mutex.h>
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#include "usbvideo.h"
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|
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// #define VICAM_DEBUG
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|
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#ifdef VICAM_DEBUG
|
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#define ADBG(lineno,fmt,args...) printk(fmt, jiffies, __FUNCTION__, lineno, ##args)
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#define DBG(fmt,args...) ADBG((__LINE__),KERN_DEBUG __FILE__"(%ld):%s (%d):"fmt,##args)
|
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#else
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#define DBG(fmn,args...) do {} while(0)
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#endif
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#define DRIVER_AUTHOR "Joe Burks, jburks@wavicle.org"
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#define DRIVER_DESC "ViCam WebCam Driver"
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/* Define these values to match your device */
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#define USB_VICAM_VENDOR_ID 0x04c1
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#define USB_VICAM_PRODUCT_ID 0x009d
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#define VICAM_BYTES_PER_PIXEL 3
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#define VICAM_MAX_READ_SIZE (512*242+128)
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#define VICAM_MAX_FRAME_SIZE (VICAM_BYTES_PER_PIXEL*320*240)
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#define VICAM_FRAMES 2
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#define VICAM_HEADER_SIZE 64
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#define clamp( x, l, h ) max_t( __typeof__( x ), \
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( l ), \
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min_t( __typeof__( x ), \
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( h ), \
|
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( x ) ) )
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/* Not sure what all the bytes in these char
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* arrays do, but they're necessary to make
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* the camera work.
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*/
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static unsigned char setup1[] = {
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0xB6, 0xC3, 0x1F, 0x00, 0x02, 0x64, 0xE7, 0x67,
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0xFD, 0xFF, 0x0E, 0xC0, 0xE7, 0x09, 0xDE, 0x00,
|
||
0x8E, 0x00, 0xC0, 0x09, 0x40, 0x03, 0xC0, 0x17,
|
||
0x44, 0x03, 0x4B, 0xAF, 0xC0, 0x07, 0x00, 0x00,
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||
0x4B, 0xAF, 0x97, 0xCF, 0x00, 0x00
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||
};
|
||
|
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static unsigned char setup2[] = {
|
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0xB6, 0xC3, 0x03, 0x00, 0x03, 0x64, 0x18, 0x00,
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0x00, 0x00
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};
|
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static unsigned char setup3[] = {
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0xB6, 0xC3, 0x01, 0x00, 0x06, 0x64, 0x00, 0x00
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};
|
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|
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static unsigned char setup4[] = {
|
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0xB6, 0xC3, 0x8F, 0x06, 0x02, 0x64, 0xE7, 0x07,
|
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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 mutex 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;
|
||
mutex_lock(&cam->cam_lock);
|
||
if (cam->udev) {
|
||
status = __send_control_msg(cam, request, value,
|
||
index, cp, size);
|
||
}
|
||
mutex_unlock(&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");
|
||
return -EINVAL;
|
||
}
|
||
|
||
/* 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);
|
||
|
||
mutex_lock(&cam->cam_lock);
|
||
|
||
cam->open_count--;
|
||
open_count = cam->open_count;
|
||
udev = cam->udev;
|
||
|
||
mutex_unlock(&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 Bj<42>rndalen, 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
|
||
|
||
mutex_lock(&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:
|
||
mutex_unlock(&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 = proc_mkdir("video/vicam", NULL);
|
||
|
||
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 = proc_mkdir(name, 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,
|
||
.compat_ioctl = v4l_compat_ioctl32,
|
||
.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 = {
|
||
.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;
|
||
|
||
mutex_init(&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 */
|
||
|
||
mutex_lock(&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;
|
||
|
||
mutex_unlock(&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");
|