/* sane - Scanner Access Now Easy.
Copyright (C) 2004 -2006 Gerard Klaver (gerard at gkall dot hobby dot nl)
The teco2 and gl646 backend (Frank Zago) are used as a template for
this backend.
For the usb commands and bayer decoding parts of the following
program are used:
The pencam2 program (GNU GPL license 2)
For the usb commands parts of the following programs are used:
The libgphoto2 (camlib stv0680) (GNU GPL license 2)
The stv680.c/.h kernel module (GNU GPL license 2)
For the stv680_add_text routine the add_text routine and font_6x11.h file
are taken from the webcam.c file, part of xawtv program,
(c) 1998-2002 Gerd Knorr (GNU GPL license 2).
This file is part of the SANE package.
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, see .
---------------------------------------------------------------------
*/
/* Commands supported by the vidcam. */
/*--------------------------------------------------------------------------*/
static inline int
getbitfield (unsigned char *pageaddr, int mask, int shift)
{
return ((*pageaddr >> shift) & mask);
}
/*--------------------------------------------------------------------------*/
#include
#define LIBUSB_TIMEOUT 1000 /* ms */
typedef unsigned char byte;
/*--------------------------------------------------------------------------*/
/* Black magic for color adjustment. */
struct dpi_color_adjust
{
int resolution_x; /* x-resolution */
int resolution_y; /* y-resolution */
int z1_color_0; /* 0, 1 or 2 */
int z1_color_1; /* idem */
int z1_color_2; /* idem */
};
/*--------------------------------------------------------------------------*/
enum Stv680_Option
{
/* Must come first */
OPT_NUM_OPTS = 0,
OPT_MODE_GROUP,
OPT_MODE, /* vidcam modes */
OPT_RESOLUTION, /* X and Y resolution */
OPT_BRIGHTNESS, /* brightness */
OPT_ENHANCEMENT_GROUP,
OPT_WHITE_LEVEL_R, /*white level red correction */
OPT_WHITE_LEVEL_G, /*white level green correction */
OPT_WHITE_LEVEL_B, /*white level blue correction */
/* must come last: */
OPT_NUM_OPTIONS
};
/*--------------------------------------------------------------------------*/
/*
* Video Camera supported by this backend.
*/
struct vidcam_hardware
{
/* USB stuff */
SANE_Word vendor;
SANE_Word product;
SANE_Word class;
/* Readable names */
const char *vendor_name; /* brand on the box */
const char *product_name; /* name on the box */
/* Resolutions supported in color mode. */
const struct dpi_color_adjust *color_adjust;
};
#define COLOR_RAW_STR SANE_I18N("Color RAW")
#define COLOR_RGB_STR SANE_I18N("Color RGB")
#define COLOR_RGB_TEXT_STR SANE_I18N("Color RGB TEXT")
/*--------------------------------------------------------------------------*/
/* Define a vidcam occurrence. */
typedef struct Stv680_Vidcam
{
struct Stv680_Vidcam *next;
SANE_Device sane;
char *devicename;
SANE_Int fd; /* device handle */
/* USB handling */
size_t buffer_size; /* size of the buffer */
SANE_Byte *buffer; /* for USB transfer. */
/* Bayer handling */
size_t output_size; /* size of the output */
SANE_Byte *output; /* for bayer conversion */
size_t image_size; /* allocated size of image */
size_t image_begin; /* first significant byte in image */
size_t image_end; /* first free byte in image */
SANE_Byte *image; /* keep the raw image here */
/* USB control messages handling */
size_t windoww_size; /* size of window write */
size_t windowr_size; /* size of window read */
SANE_Byte *windoww; /* for window write */
SANE_Byte *windowr; /* for window read */
/* Scanner infos. */
const struct vidcam_hardware *hw; /* default options for that vidcam */
SANE_Word *resolutions_list;
SANE_Word *color_sequence_list;
/* Scanning handling. */
SANE_Bool scanning; /* TRUE if a scan is running. */
SANE_Bool deliver_eof;
int x_resolution; /* X resolution */
int y_resolution; /* Y resolution */
int depth; /* depth per color */
unsigned int colour;
int red_s;
int green_s;
int blue_s;
SANE_Parameters s_params;
enum
{
STV680_COLOR_RGB,
STV680_COLOR_RGB_TEXT,
STV680_COLOR,
STV680_COLOR_RAW
}
scan_mode;
size_t bytes_left; /* number of bytes left to give to the backend */
size_t real_bytes_left; /* number of bytes left the vidcam will return. */
int bytes_pixel;
const struct dpi_color_adjust *color_adjust;
SANE_Parameters params;
/* Options */
SANE_Option_Descriptor opt[OPT_NUM_OPTIONS];
Option_Value val[OPT_NUM_OPTIONS];
unsigned int video_mode; /* 0x0100 = VGA, 0x0000 = CIF,
* 0x0300 = QVGA, 0x0200 = QCIF*/
unsigned int video_status; /* 0x01=start, 0x02=video, 0x04=busy, 0x08=idle */
int SupportedModes;
int HardwareConfig;
int QSIF;
int CIF;
int VGA;
int QVGA;
int QCIF;
int cwidth; /* camera width */
int cheight;
int subsample;
int framecount;
char picmsg_ps[50];
}
Stv680_Vidcam;
/*--------------------------------------------------------------------------*/
/* Debug levels.
* Should be common to all backends. */
#define DBG_error0 0
#define DBG_error 1
#define DBG_sense 2
#define DBG_warning 3
#define DBG_inquiry 4
#define DBG_info 5
#define DBG_info2 6
#define DBG_proc 7
#define DBG_read 8
#define DBG_sane_init 10
#define DBG_sane_proc 11
#define DBG_sane_info 12
#define DBG_sane_option 13
/*--------------------------------------------------------*/
static SANE_Byte red_g[256] = {
0, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18,
18, 18, 18, 18, 18, 18, 18, 25, 30, 35, 38, 42,
44, 47, 50, 53, 54, 57, 59, 61, 63, 65, 67, 69,
71, 71, 73, 75, 77, 78, 80, 81, 82, 84, 85, 87,
88, 89, 90, 91, 93, 94, 95, 97, 98, 98, 99, 101,
102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113,
114, 115, 116, 116, 117, 118, 119, 120, 121, 122, 123, 124,
125, 125, 126, 127, 128, 129, 129, 130, 131, 132, 133, 134,
134, 135, 135, 136, 137, 138, 139, 140, 140, 141, 142, 143,
143, 143, 144, 145, 146, 147, 147, 148, 149, 150, 150, 151,
152, 152, 152, 153, 154, 154, 155, 156, 157, 157, 158, 159,
159, 160, 161, 161, 161, 162, 163, 163, 164, 165, 165, 166,
167, 167, 168, 168, 169, 170, 170, 170, 171, 171, 172, 173,
173, 174, 174, 175, 176, 176, 177, 178, 178, 179, 179, 179,
180, 180, 181, 181, 182, 183, 183, 184, 184, 185, 185, 186,
187, 187, 188, 188, 188, 188, 189, 190, 190, 191, 191, 192,
192, 193, 193, 194, 195, 195, 196, 196, 197, 197, 197, 197,
198, 198, 199, 199, 200, 201, 201, 202, 202, 203, 203, 204,
204, 205, 205, 206, 206, 206, 206, 207, 207, 208, 208, 209,
209, 210, 210, 211, 211, 212, 212, 213, 213, 214, 214, 215,
215, 215, 215, 216, 216, 217, 217, 218, 218, 218, 219, 219,
220, 220, 221, 221
};
static SANE_Byte green_g[256] = {
0, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21,
21, 21, 21, 21, 21, 21, 21, 28, 34, 39, 43, 47,
50, 53, 56, 59, 61, 64, 66, 68, 71, 73, 75, 77,
79, 80, 82, 84, 86, 87, 89, 91, 92, 94, 95, 97,
98, 100, 101, 102, 104, 105, 106, 108, 109, 110, 111, 113,
114, 115, 116, 117, 118, 120, 121, 122, 123, 124, 125, 126,
127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138,
139, 140, 141, 142, 143, 144, 144, 145, 146, 147, 148, 149,
150, 151, 151, 152, 153, 154, 155, 156, 156, 157, 158, 159,
160, 160, 161, 162, 163, 164, 164, 165, 166, 167, 167, 168,
169, 170, 170, 171, 172, 172, 173, 174, 175, 175, 176, 177,
177, 178, 179, 179, 180, 181, 182, 182, 183, 184, 184, 185,
186, 186, 187, 187, 188, 189, 189, 190, 191, 191, 192, 193,
193, 194, 194, 195, 196, 196, 197, 198, 198, 199, 199, 200,
201, 201, 202, 202, 203, 204, 204, 205, 205, 206, 206, 207,
208, 208, 209, 209, 210, 210, 211, 212, 212, 213, 213, 214,
214, 215, 215, 216, 217, 217, 218, 218, 219, 219, 220, 220,
221, 221, 222, 222, 223, 224, 224, 225, 225, 226, 226, 227,
227, 228, 228, 229, 229, 230, 230, 231, 231, 232, 232, 233,
233, 234, 234, 235, 235, 236, 236, 237, 237, 238, 238, 239,
239, 240, 240, 241, 241, 242, 242, 243, 243, 243, 244, 244,
245, 245, 246, 246
};
static SANE_Byte blue_g[256] = {
0, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23,
23, 23, 23, 23, 23, 23, 23, 30, 37, 42, 47, 51,
55, 58, 61, 64, 67, 70, 72, 74, 78, 80, 82, 84,
86, 88, 90, 92, 94, 95, 97, 100, 101, 103, 104, 106,
107, 110, 111, 112, 114, 115, 116, 118, 119, 121, 122, 124,
125, 126, 127, 128, 129, 132, 133, 134, 135, 136, 137, 138,
139, 140, 141, 143, 144, 145, 146, 147, 148, 149, 150, 151,
152, 154, 155, 156, 157, 158, 158, 159, 160, 161, 162, 163,
165, 166, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174,
176, 176, 177, 178, 179, 180, 180, 181, 182, 183, 183, 184,
185, 187, 187, 188, 189, 189, 190, 191, 192, 192, 193, 194,
194, 195, 196, 196, 198, 199, 200, 200, 201, 202, 202, 203,
204, 204, 205, 205, 206, 207, 207, 209, 210, 210, 211, 212,
212, 213, 213, 214, 215, 215, 216, 217, 217, 218, 218, 220,
221, 221, 222, 222, 223, 224, 224, 225, 225, 226, 226, 227,
228, 228, 229, 229, 231, 231, 232, 233, 233, 234, 234, 235,
235, 236, 236, 237, 238, 238, 239, 239, 240, 240, 242, 242,
243, 243, 244, 244, 245, 246, 246, 247, 247, 248, 248, 249,
249, 250, 250, 251, 251, 253, 253, 254, 254, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255
};