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sane-project-backends/backend/plustek_pp.c

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/** @file plustek_pp.c
* @brief SANE backend for Plustek parallelport scanner
*
* Based on Kazuhiro Sasayama previous work on
* plustek.[ch] file from the SANE package.<br>
* Original code taken from sane-0.71<br>
* Copyright (C) 1997 Hypercore Software Design, Ltd.<br>
* Also based on the work done by Rick Bronson<br>
* Copyright (C) 2000-2004 Gerhard Jaeger <gerhard@gjaeger.de><br>
*
* History:
* - 0.01 - initial version, imported from the kernel-module 0.42-11
* - 0.43 - bumped up version to reflect the former module code version
*.
* <hr>
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*
* As a special exception, the authors of SANE give permission for
* additional uses of the libraries contained in this release of SANE.
*
* The exception is that, if you link a SANE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public
* License. Your use of that executable is in no way restricted on
* account of linking the SANE library code into it.
*
* This exception does not, however, invalidate any other reasons why
* the executable file might be covered by the GNU General Public
* License.
*
* If you submit changes to SANE to the maintainers to be included in
* a subsequent release, you agree by submitting the changes that
* those changes may be distributed with this exception intact.
*
* If you write modifications of your own for SANE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
* <hr>
*/
/** @mainpage
* @verbinclude Plustek-PARPORT.txt
*/
#ifdef _AIX
# include "../include/lalloca.h" /* MUST come first for AIX! */
#endif
#include "../include/sane/config.h"
#include "../include/lalloca.h"
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <time.h>
#include <math.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include "../include/sane/sane.h"
#include "../include/sane/sanei.h"
#include "../include/sane/saneopts.h"
#define BACKEND_VERSION "0.43-6"
#define BACKEND_NAME plustek_pp
#include "../include/sane/sanei_backend.h"
#include "../include/sane/sanei_config.h"
#include "../include/sane/sanei_thread.h"
#include "../include/sane/sanei_pp.h"
#define _BACKEND_ENABLED
#define _USER_MODE
#include "plustek-pp.h"
/*********************** the debug levels ************************************/
#define _DBG_FATAL 0
#define _DBG_ERROR 1
#define _DBG_WARNING 3
#define _DBG_INFO 5
#define _DBG_PROC 7
#define _DBG_SANE_INIT 10
#define _DBG_INFO2 13
#define _DBG_DUMP 20
#define _DBG_READ 25
/*****************************************************************************/
/*
* see plustek-share.h
*/
MODELSTR;
#ifdef _BACKEND_ENABLED
#ifndef NDEBUG
# define DEBUG
#endif
/* I know this is in general no good idea, but it works */
# include "plustek-pp_io.c"
# include "plustek-pp_dac.c"
# include "plustek-pp_detect.c"
# include "plustek-pp_genericio.c"
# include "plustek-pp_image.c"
# include "plustek-pp_map.c"
# include "plustek-pp_misc.c"
# include "plustek-pp_models.c"
# include "plustek-pp_motor.c"
# include "plustek-pp_p12.c"
# include "plustek-pp_p12ccd.c"
# include "plustek-pp_p48xx.c"
# include "plustek-pp_p9636.c"
# include "plustek-pp_procfs.c"
# include "plustek-pp_scale.c"
# include "plustek-pp_tpa.c"
#define _DEFAULT_DEVICE "0x378"
#else
#define _DEFAULT_DEVICE "/dev/pt_drv"
#endif
#ifdef _BACKEND_ENABLED
# include "plustek-pp_ptdrv.c"
#endif
#include "plustek-pp_wrapper.c"
/************************** global vars **************************************/
static int num_devices;
static Plustek_Device *first_dev;
static Plustek_Scanner *first_handle;
static const SANE_Device **devlist = 0;
static unsigned long tsecs = 0;
static ModeParam mode_params[] =
{
{0, 1, COLOR_BW},
{0, 1, COLOR_HALFTONE},
{0, 8, COLOR_256GRAY},
{1, 8, COLOR_TRUE24},
{1, 16, COLOR_TRUE32},
{1, 16, COLOR_TRUE36}
};
static ModeParam mode_9800x_params[] =
{
{0, 1, COLOR_BW},
{0, 1, COLOR_HALFTONE},
{0, 8, COLOR_256GRAY},
{1, 8, COLOR_TRUE24},
{1, 16, COLOR_TRUE48}
};
static const SANE_String_Const mode_list[] =
{
SANE_VALUE_SCAN_MODE_LINEART,
SANE_I18N("Halftone"),
SANE_VALUE_SCAN_MODE_GRAY,
SANE_VALUE_SCAN_MODE_COLOR,
NULL
};
static const SANE_String_Const mode_9800x_list[] =
{
SANE_VALUE_SCAN_MODE_LINEART,
SANE_I18N("Halftone"),
SANE_VALUE_SCAN_MODE_GRAY,
SANE_VALUE_SCAN_MODE_COLOR,
SANE_I18N("Color36"),
NULL
};
static const SANE_String_Const ext_mode_list[] =
{
SANE_I18N("Normal"),
SANE_I18N("Transparency"),
SANE_I18N("Negative"),
NULL
};
static const SANE_String_Const halftone_list[] =
{
SANE_I18N("Dithermap 1"),
SANE_I18N("Dithermap 2"),
SANE_I18N("Randomize"),
NULL
};
static const SANE_Range percentage_range =
{
-100 << SANE_FIXED_SCALE_SHIFT, /* minimum */
100 << SANE_FIXED_SCALE_SHIFT, /* maximum */
1 << SANE_FIXED_SCALE_SHIFT /* quantization */
};
/*
* lens info
*/
static LensInfo lens = {{0,0,0,0,},{0,0,0,0,},{0,0,0,0,},{0,0,0,0,},0,0};
/* authorization stuff */
static SANE_Auth_Callback auth = NULL;
/****************************** the backend... *******************************/
#define _YN(x) (x?"yes":"no")
/**
* function to display the configuration options for the current device
* @param cnf - pointer to the configuration structure whose content should be
* displayed
*/
static void show_cnf( pCnfDef cnf )
{
DBG( _DBG_SANE_INIT,"Device configuration:\n" );
DBG( _DBG_SANE_INIT,"device name : >%s<\n", cnf->devName );
DBG( _DBG_SANE_INIT,"direct I/O : %s\n", _YN(cnf->adj.direct_io ));
DBG( _DBG_SANE_INIT,"warmup : %ds\n", cnf->adj.warmup );
DBG( _DBG_SANE_INIT,"lampOff : %d\n", cnf->adj.lampOff );
DBG( _DBG_SANE_INIT,"lampOffOnEnd : %s\n", _YN(cnf->adj.lampOffOnEnd ));
DBG( _DBG_SANE_INIT,"model override: %d\n", cnf->adj.mov );
DBG( _DBG_SANE_INIT,"---------------------\n" );
}
/** open the device specific driver and reset the internal timing stuff
* @param dev - pointer to the device specific structure
* @return the function returns the result of the open call, on success
* of course the handle
*/
static int drvopen( Plustek_Device *dev )
{
int handle;
DBG( _DBG_INFO, "drvopen()\n" );
handle = dev->open((const char*)dev->name, (void *)dev );
tsecs = 0;
return handle;
}
/** Calls the device specific stop and close functions.
* @param dev - pointer to the device specific structure
* @return The function always returns SANE_STATUS_GOOD
*/
static SANE_Status drvclose( Plustek_Device *dev )
{
int int_cnt;
if( dev->fd >= 0 ) {
DBG( _DBG_INFO, "drvclose()\n" );
if( 0 != tsecs ) {
DBG( _DBG_INFO, "TIME END 1: %lus\n", time(NULL)-tsecs);
}
/*
* don't check the return values, simply do it and close the driver
*/
int_cnt = 0;
dev->stopScan( dev, &int_cnt );
dev->close( dev );
}
dev->fd = -1;
return SANE_STATUS_GOOD;
}
/** according to the mode and source we return the corresponding mode list
*/
static pModeParam getModeList( Plustek_Scanner *scanner )
{
pModeParam mp;
if((_ASIC_IS_98003 == scanner->hw->caps.AsicID) ||
(_ASIC_IS_98001 == scanner->hw->caps.AsicID)) {
mp = mode_9800x_params;
} else {
mp = mode_params;
}
/*
* the transparency/negative mode supports only GRAY/COLOR/COLOR32/COLOR48
*/
if( 0 != scanner->val[OPT_EXT_MODE].w ) {
mp = &mp[_TPAModeSupportMin];
}
return mp;
}
/**
*/
static SANE_Status close_pipe( Plustek_Scanner *scanner )
{
if( scanner->r_pipe >= 0 ) {
DBG( _DBG_PROC, "close r_pipe\n" );
close( scanner->r_pipe );
scanner->r_pipe = -1;
}
if( scanner->w_pipe >= 0 ) {
DBG( _DBG_PROC, "close w_pipe\n" );
close( scanner->w_pipe );
scanner->w_pipe = -1;
}
return SANE_STATUS_EOF;
}
/**
*/
static void sig_chldhandler( int signo )
{
DBG( _DBG_PROC, "Child is down (signal=%d)\n", signo );
}
/** signal handler to kill the child process
*/
static RETSIGTYPE reader_process_sigterm_handler( int signo )
{
DBG( _DBG_PROC, "reader_process: terminated by signal %d\n", signo );
_exit( SANE_STATUS_GOOD );
}
static RETSIGTYPE sigalarm_handler( int signo )
{
_VAR_NOT_USED( signo );
DBG( _DBG_PROC, "ALARM!!!\n" );
}
/** executed as a child process
* read the data from the driver and send them to the parent process
*/
static int reader_process( void *args )
{
int line;
unsigned long status;
unsigned long data_length;
struct SIGACTION act;
sigset_t ignore_set;
Plustek_Scanner *scanner = (Plustek_Scanner *)args;
if( sanei_thread_is_forked()) {
DBG( _DBG_PROC, "reader_process started (forked)\n" );
close( scanner->r_pipe );
scanner->r_pipe = -1;
} else {
DBG( _DBG_PROC, "reader_process started (as thread)\n" );
}
sigfillset ( &ignore_set );
sigdelset ( &ignore_set, SIGTERM );
#if defined (__APPLE__) && defined (__MACH__)
sigdelset ( &ignore_set, SIGUSR2 );
#endif
sigprocmask( SIG_SETMASK, &ignore_set, 0 );
memset ( &act, 0, sizeof (act));
sigaction( SIGTERM, &act, 0 );
/* install the signal handler */
sigemptyset(&(act.sa_mask));
act.sa_flags = 0;
act.sa_handler = reader_process_sigterm_handler;
sigaction( SIGTERM, &act, 0 );
data_length = scanner->params.lines * scanner->params.bytes_per_line;
DBG( _DBG_PROC, "reader_process:"
"starting to READ data (%lu bytes)\n", data_length );
DBG( _DBG_PROC, "buf = 0x%08lx\n", (unsigned long)scanner->buf );
if( NULL == scanner->buf ) {
DBG( _DBG_FATAL, "NULL Pointer !!!!\n" );
return SANE_STATUS_IO_ERROR;
}
/* here we read all data from the driver... */
if( scanner->hw->readImage ) {
status = (unsigned long)scanner->hw->readImage( scanner->hw,
scanner->buf, data_length);
} else {
unsigned char *buf = scanner->buf;
status = scanner->hw->prepare( scanner->hw, buf );
if( 0 == status ) {
for( line = 0; line < scanner->params.lines; line++ ) {
status = scanner->hw->readLine( scanner->hw );
if((int)status < 0 ) {
break;
}
write( scanner->w_pipe, buf, scanner->params.bytes_per_line );
buf += scanner->params.bytes_per_line;
}
}
}
/* on error, there's no need to clean up, as this is done by the parent */
if((int)status < 0 ) {
DBG( _DBG_ERROR, "read failed, status = %i, errno %i\n",
(int)status, errno );
if( -9009 == (int)status )
return SANE_STATUS_CANCELLED;
if( errno == EBUSY )
return SANE_STATUS_DEVICE_BUSY;
return SANE_STATUS_IO_ERROR;
}
/* send to parent */
if( scanner->hw->readImage ) {
DBG( _DBG_PROC, "sending %lu bytes to parent\n", status );
write( scanner->w_pipe, scanner->buf, status );
}
DBG( _DBG_PROC, "reader_process: finished reading data\n" );
return SANE_STATUS_GOOD;
}
/** stop the current scan process
*/
static SANE_Status do_cancel( Plustek_Scanner *scanner, SANE_Bool closepipe )
{
struct SIGACTION act;
pid_t res;
int int_cnt;
DBG( _DBG_PROC,"do_cancel\n" );
scanner->scanning = SANE_FALSE;
if( scanner->reader_pid > 0 ) {
DBG( _DBG_PROC, ">>>>>>>> killing reader_process <<<<<<<<\n" );
/* tell the driver to stop scanning */
if( -1 != scanner->hw->fd ) {
int_cnt = 1;
scanner->hw->stopScan( scanner->hw, &int_cnt );
}
sigemptyset(&(act.sa_mask));
act.sa_flags = 0;
act.sa_handler = sigalarm_handler;
sigaction( SIGALRM, &act, 0 );
/* kill our child process and wait until done */
sanei_thread_kill( scanner->reader_pid );
/* give'em 10 seconds 'til done...*/
alarm(10);
res = sanei_thread_waitpid( scanner->reader_pid, 0 );
alarm(0);
if( res != scanner->reader_pid ) {
DBG( _DBG_PROC,"sanei_thread_waitpid() failed !\n");
/* do it the hard way...*/
#ifdef USE_PTHREAD
sanei_thread_kill( scanner->reader_pid );
#else
sanei_thread_sendsig( scanner->reader_pid, SIGKILL );
#endif
}
scanner->reader_pid = 0;
DBG( _DBG_PROC,"reader_process killed\n");
}
if( SANE_TRUE == closepipe ) {
close_pipe( scanner );
}
drvclose( scanner->hw );
if( tsecs != 0 ) {
DBG( _DBG_INFO, "TIME END 2: %lus\n", time(NULL)-tsecs);
tsecs = 0;
}
return SANE_STATUS_CANCELLED;
}
/** because of some internal problems (inside the parport driver), we have to
* limit the max resolution to optical resolution. This is done by this
* function
* @param dev - pointer to the device specific structure
* @return The function always returns SANE_STATUS_GOOD
*/
static SANE_Status limitResolution( Plustek_Device *dev )
{
dev->dpi_range.min = _DEF_DPI;
if( dev->dpi_range.min < _DEF_DPI )
dev->dpi_range.min = _DEF_DPI;
/*
* CHANGE: limit resolution to max. physical available one
* Note: the resolution for the Asic 96001/3 models is limited to
* the X-Resolution
*/
if((_ASIC_IS_96003 == dev->caps.AsicID) ||
(_ASIC_IS_96001 == dev->caps.AsicID)) {
dev->dpi_range.max = lens.rDpiX.wPhyMax;
} else {
dev->dpi_range.max = lens.rDpiY.wPhyMax;
}
dev->dpi_range.quant = 0;
dev->x_range.min = 0;
dev->x_range.max = SANE_FIX(dev->max_x);
dev->x_range.quant = 0;
dev->y_range.min = 0;
dev->y_range.max = SANE_FIX(dev->max_y);
dev->y_range.quant = 0;
return SANE_STATUS_GOOD;
}
/** Currently we support only LM9831/2/3 chips and these use the same
* sizes...
* @param s - pointer to the scanner specific structure
* @return The function always returns SANE_STATUS_GOOD
*/
static SANE_Status initGammaSettings( Plustek_Scanner *s )
{
int i, j, val;
double gamma;
/*
* this setting is common to the ASIC98001/3 and
* LM9831/2/3 based devices
* older parallelport devices use 256 entries
*/
s->gamma_length = 4096;
s->gamma_range.min = 0;
s->gamma_range.max = 255;
s->gamma_range.quant = 0;
if((_ASIC_IS_96003 == s->hw->caps.AsicID) ||
(_ASIC_IS_96001 == s->hw->caps.AsicID)) {
s->gamma_length = 256;
}
DBG( _DBG_INFO, "Presetting Gamma tables (len=%u)\n", s->gamma_length );
DBG( _DBG_INFO, "----------------------------------\n" );
/*
* preset the gamma maps
*/
for( i = 0; i < 4; i++ ) {
switch( i ) {
case 1: gamma = s->hw->adj.rgamma; break;
case 2: gamma = s->hw->adj.ggamma; break;
case 3: gamma = s->hw->adj.bgamma; break;
default: gamma = s->hw->adj.graygamma; break;
}
for( j = 0; j < s->gamma_length; j++ ) {
val = (s->gamma_range.max *
pow((double) j / ((double)s->gamma_length - 1.0),
1.0 / gamma ));
if( val > s->gamma_range.max )
val = s->gamma_range.max;
s->gamma_table[i][j] = val;
}
}
return SANE_STATUS_GOOD;
}
/** Check the gamma vectors we got back and limit if necessary
* @param s - pointer to the scanner specific structure
* @return nothing
*/
static void checkGammaSettings( Plustek_Scanner *s )
{
int i, j;
for( i = 0; i < 4 ; i++ ) {
for( j = 0; j < s->gamma_length; j++ ) {
if( s->gamma_table[i][j] > s->gamma_range.max ) {
s->gamma_table[i][j] = s->gamma_range.max;
}
}
}
}
/** initialize the options for the backend according to the device we have
*/
static SANE_Status init_options( Plustek_Scanner *s )
{
int i;
memset( s->opt, 0, sizeof(s->opt));
for( i = 0; i < NUM_OPTIONS; ++i ) {
s->opt[i].size = sizeof (SANE_Word);
s->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
}
s->opt[OPT_NUM_OPTS].name = SANE_NAME_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].type = SANE_TYPE_INT;
s->opt[OPT_NUM_OPTS].unit = SANE_UNIT_NONE;
s->opt[OPT_NUM_OPTS].cap = SANE_CAP_SOFT_DETECT;
s->opt[OPT_NUM_OPTS].constraint_type = SANE_CONSTRAINT_NONE;
s->val[OPT_NUM_OPTS].w = NUM_OPTIONS;
/* "Scan Mode" group: */
s->opt[OPT_MODE_GROUP].name = "scanmode-group";
s->opt[OPT_MODE_GROUP].title = SANE_I18N("Scan Mode");
s->opt[OPT_MODE_GROUP].desc = "";
s->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_MODE_GROUP].cap = 0;
/* scan mode */
s->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE;
s->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE;
s->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE;
s->opt[OPT_MODE].type = SANE_TYPE_STRING;
s->opt[OPT_MODE].size = 32;
s->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
if((_ASIC_IS_98001 == s->hw->caps.AsicID) ||
(_ASIC_IS_98003 == s->hw->caps.AsicID)) {
s->opt[OPT_MODE].constraint.string_list = mode_9800x_list;
} else {
s->opt[OPT_MODE].constraint.string_list = mode_list;
}
s->val[OPT_MODE].w = 3; /* Color */
/* scan source */
s->opt[OPT_EXT_MODE].name = SANE_NAME_SCAN_SOURCE;
s->opt[OPT_EXT_MODE].title = SANE_TITLE_SCAN_SOURCE;
s->opt[OPT_EXT_MODE].desc = SANE_DESC_SCAN_SOURCE;
s->opt[OPT_EXT_MODE].type = SANE_TYPE_STRING;
s->opt[OPT_EXT_MODE].size = 32;
s->opt[OPT_EXT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
s->opt[OPT_EXT_MODE].constraint.string_list = ext_mode_list;
s->val[OPT_EXT_MODE].w = 0; /* Normal */
/* halftone */
s->opt[OPT_HALFTONE].name = SANE_NAME_HALFTONE_PATTERN;
s->opt[OPT_HALFTONE].title = SANE_TITLE_HALFTONE;
s->opt[OPT_HALFTONE].desc = SANE_DESC_HALFTONE_PATTERN;
s->opt[OPT_HALFTONE].type = SANE_TYPE_STRING;
s->opt[OPT_HALFTONE].size = 32;
s->opt[OPT_HALFTONE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
s->opt[OPT_HALFTONE].constraint.string_list = halftone_list;
s->val[OPT_HALFTONE].w = 0; /* Standard dithermap */
s->opt[OPT_HALFTONE].cap |= SANE_CAP_INACTIVE;
/* brightness */
s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].desc = SANE_DESC_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].type = SANE_TYPE_FIXED;
s->opt[OPT_BRIGHTNESS].unit = SANE_UNIT_PERCENT;
s->opt[OPT_BRIGHTNESS].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BRIGHTNESS].constraint.range = &percentage_range;
s->val[OPT_BRIGHTNESS].w = 0;
/* contrast */
s->opt[OPT_CONTRAST].name = SANE_NAME_CONTRAST;
s->opt[OPT_CONTRAST].title = SANE_TITLE_CONTRAST;
s->opt[OPT_CONTRAST].desc = SANE_DESC_CONTRAST;
s->opt[OPT_CONTRAST].type = SANE_TYPE_FIXED;
s->opt[OPT_CONTRAST].unit = SANE_UNIT_PERCENT;
s->opt[OPT_CONTRAST].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_CONTRAST].constraint.range = &percentage_range;
s->val[OPT_CONTRAST].w = 0;
/* resolution */
s->opt[OPT_RESOLUTION].name = SANE_NAME_SCAN_RESOLUTION;
s->opt[OPT_RESOLUTION].title = SANE_TITLE_SCAN_RESOLUTION;
s->opt[OPT_RESOLUTION].desc = SANE_DESC_SCAN_RESOLUTION;
s->opt[OPT_RESOLUTION].type = SANE_TYPE_INT;
s->opt[OPT_RESOLUTION].unit = SANE_UNIT_DPI;
s->opt[OPT_RESOLUTION].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_RESOLUTION].constraint.range = &s->hw->dpi_range;
s->val[OPT_RESOLUTION].w = s->hw->dpi_range.min;
/* custom-gamma table */
s->opt[OPT_CUSTOM_GAMMA].name = SANE_NAME_CUSTOM_GAMMA;
s->opt[OPT_CUSTOM_GAMMA].title = SANE_TITLE_CUSTOM_GAMMA;
s->opt[OPT_CUSTOM_GAMMA].desc = SANE_DESC_CUSTOM_GAMMA;
s->opt[OPT_CUSTOM_GAMMA].type = SANE_TYPE_BOOL;
s->val[OPT_CUSTOM_GAMMA].w = SANE_FALSE;
/* preview */
s->opt[OPT_PREVIEW].name = SANE_NAME_PREVIEW;
s->opt[OPT_PREVIEW].title = SANE_TITLE_PREVIEW;
s->opt[OPT_PREVIEW].desc = SANE_DESC_PREVIEW;
s->opt[OPT_PREVIEW].cap = SANE_CAP_SOFT_DETECT | SANE_CAP_SOFT_SELECT;
s->val[OPT_PREVIEW].w = 0;
/* "Geometry" group: */
s->opt[OPT_GEOMETRY_GROUP].name = "geometry-group";
s->opt[OPT_GEOMETRY_GROUP].title = SANE_I18N("Geometry");
s->opt[OPT_GEOMETRY_GROUP].desc = "";
s->opt[OPT_GEOMETRY_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_GEOMETRY_GROUP].cap = SANE_CAP_ADVANCED;
/* top-left x */
s->opt[OPT_TL_X].name = SANE_NAME_SCAN_TL_X;
s->opt[OPT_TL_X].title = SANE_TITLE_SCAN_TL_X;
s->opt[OPT_TL_X].desc = SANE_DESC_SCAN_TL_X;
s->opt[OPT_TL_X].type = SANE_TYPE_FIXED;
s->opt[OPT_TL_X].unit = SANE_UNIT_MM;
s->opt[OPT_TL_X].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_TL_X].constraint.range = &s->hw->x_range;
s->val[OPT_TL_X].w = SANE_FIX(_DEFAULT_TLX);
/* top-left y */
s->opt[OPT_TL_Y].name = SANE_NAME_SCAN_TL_Y;
s->opt[OPT_TL_Y].title = SANE_TITLE_SCAN_TL_Y;
s->opt[OPT_TL_Y].desc = SANE_DESC_SCAN_TL_Y;
s->opt[OPT_TL_Y].type = SANE_TYPE_FIXED;
s->opt[OPT_TL_Y].unit = SANE_UNIT_MM;
s->opt[OPT_TL_Y].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_TL_Y].constraint.range = &s->hw->y_range;
s->val[OPT_TL_Y].w = SANE_FIX(_DEFAULT_TLY);
/* bottom-right x */
s->opt[OPT_BR_X].name = SANE_NAME_SCAN_BR_X;
s->opt[OPT_BR_X].title = SANE_TITLE_SCAN_BR_X;
s->opt[OPT_BR_X].desc = SANE_DESC_SCAN_BR_X;
s->opt[OPT_BR_X].type = SANE_TYPE_FIXED;
s->opt[OPT_BR_X].unit = SANE_UNIT_MM;
s->opt[OPT_BR_X].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BR_X].constraint.range = &s->hw->x_range;
s->val[OPT_BR_X].w = SANE_FIX(_DEFAULT_BRX);
/* bottom-right y */
s->opt[OPT_BR_Y].name = SANE_NAME_SCAN_BR_Y;
s->opt[OPT_BR_Y].title = SANE_TITLE_SCAN_BR_Y;
s->opt[OPT_BR_Y].desc = SANE_DESC_SCAN_BR_Y;
s->opt[OPT_BR_Y].type = SANE_TYPE_FIXED;
s->opt[OPT_BR_Y].unit = SANE_UNIT_MM;
s->opt[OPT_BR_Y].constraint_type = SANE_CONSTRAINT_RANGE;
s->opt[OPT_BR_Y].constraint.range = &s->hw->y_range;
s->val[OPT_BR_Y].w = SANE_FIX(_DEFAULT_BRY);
/* "Enhancement" group: */
s->opt[OPT_ENHANCEMENT_GROUP].title = SANE_I18N("Enhancement");
s->opt[OPT_ENHANCEMENT_GROUP].desc = "";
s->opt[OPT_ENHANCEMENT_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_ENHANCEMENT_GROUP].cap = 0;
s->opt[OPT_ENHANCEMENT_GROUP].constraint_type = SANE_CONSTRAINT_NONE;
initGammaSettings( s );
/* grayscale gamma vector */
s->opt[OPT_GAMMA_VECTOR].name = SANE_NAME_GAMMA_VECTOR;
s->opt[OPT_GAMMA_VECTOR].title = SANE_TITLE_GAMMA_VECTOR;
s->opt[OPT_GAMMA_VECTOR].desc = SANE_DESC_GAMMA_VECTOR;
s->opt[OPT_GAMMA_VECTOR].type = SANE_TYPE_INT;
s->opt[OPT_GAMMA_VECTOR].unit = SANE_UNIT_NONE;
s->opt[OPT_GAMMA_VECTOR].constraint_type = SANE_CONSTRAINT_RANGE;
s->val[OPT_GAMMA_VECTOR].wa = &(s->gamma_table[0][0]);
s->opt[OPT_GAMMA_VECTOR].constraint.range = &(s->gamma_range);
s->opt[OPT_GAMMA_VECTOR].size = s->gamma_length * sizeof(SANE_Word);
/* red gamma vector */
s->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R;
s->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R;
s->opt[OPT_GAMMA_VECTOR_R].desc = SANE_DESC_GAMMA_VECTOR_R;
s->opt[OPT_GAMMA_VECTOR_R].type = SANE_TYPE_INT;
s->opt[OPT_GAMMA_VECTOR_R].unit = SANE_UNIT_NONE;
s->opt[OPT_GAMMA_VECTOR_R].constraint_type = SANE_CONSTRAINT_RANGE;
s->val[OPT_GAMMA_VECTOR_R].wa = &(s->gamma_table[1][0]);
s->opt[OPT_GAMMA_VECTOR_R].constraint.range = &(s->gamma_range);
s->opt[OPT_GAMMA_VECTOR_R].size = s->gamma_length * sizeof(SANE_Word);
/* green gamma vector */
s->opt[OPT_GAMMA_VECTOR_G].name = SANE_NAME_GAMMA_VECTOR_G;
s->opt[OPT_GAMMA_VECTOR_G].title = SANE_TITLE_GAMMA_VECTOR_G;
s->opt[OPT_GAMMA_VECTOR_G].desc = SANE_DESC_GAMMA_VECTOR_G;
s->opt[OPT_GAMMA_VECTOR_G].type = SANE_TYPE_INT;
s->opt[OPT_GAMMA_VECTOR_G].unit = SANE_UNIT_NONE;
s->opt[OPT_GAMMA_VECTOR_G].constraint_type = SANE_CONSTRAINT_RANGE;
s->val[OPT_GAMMA_VECTOR_G].wa = &(s->gamma_table[2][0]);
s->opt[OPT_GAMMA_VECTOR_G].constraint.range = &(s->gamma_range);
s->opt[OPT_GAMMA_VECTOR_G].size = s->gamma_length * sizeof(SANE_Word);
/* blue gamma vector */
s->opt[OPT_GAMMA_VECTOR_B].name = SANE_NAME_GAMMA_VECTOR_B;
s->opt[OPT_GAMMA_VECTOR_B].title = SANE_TITLE_GAMMA_VECTOR_B;
s->opt[OPT_GAMMA_VECTOR_B].desc = SANE_DESC_GAMMA_VECTOR_B;
s->opt[OPT_GAMMA_VECTOR_B].type = SANE_TYPE_INT;
s->opt[OPT_GAMMA_VECTOR_B].unit = SANE_UNIT_NONE;
s->opt[OPT_GAMMA_VECTOR_B].constraint_type = SANE_CONSTRAINT_RANGE;
s->val[OPT_GAMMA_VECTOR_B].wa = &(s->gamma_table[3][0]);
s->opt[OPT_GAMMA_VECTOR_B].constraint.range = &(s->gamma_range);
s->opt[OPT_GAMMA_VECTOR_B].size = s->gamma_length * sizeof(SANE_Word);
/* GAMMA stuff is disabled per default */
s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
/* disable extended mode list for devices without TPA */
if( 0 == (s->hw->caps.dwFlag & SFLAG_TPA)) {
s->opt[OPT_EXT_MODE].cap |= SANE_CAP_INACTIVE;
}
/* disable custom gamma, if not supported by the driver... */
if( 0 == (s->hw->caps.dwFlag & SFLAG_CUSTOM_GAMMA)) {
s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
}
return SANE_STATUS_GOOD;
}
#define _INT 0
#define _FLOAT 1
/** function to decode an value and give it back to the caller.
* @param src - pointer to the source string to check
* @param opt - string that keeps the option name to check src for
* @param what - _FLOAT or _INT
* @param result - pointer to the var that should receive our result
* @param def - default value that result should be in case of any error
* @return The function returns SANE_TRUE if the option has been found,
* if not, it returns SANE_FALSE
*/
static SANE_Bool decodeVal( char *src, char *opt,
int what, void *result, void *def )
{
char *tmp, *tmp2;
const char *name;
/* skip the option string */
name = (const char*)&src[strlen("option")];
/* get the name of the option */
name = sanei_config_get_string( name, &tmp );
if( tmp ) {
/* on success, compare wiht the given one */
if( 0 == strcmp( tmp, opt )) {
DBG( _DBG_SANE_INIT, "Decoding option >%s<\n", opt );
if( _INT == what ) {
/* assign the default value for this option... */
*((int*)result) = *((int*)def);
if( *name ) {
/* get the configuration value and decode it */
name = sanei_config_get_string( name, &tmp2 );
if( tmp2 ) {
*((int*)result) = strtol( tmp2, 0, 0 );
free( tmp2 );
}
}
free( tmp );
return SANE_TRUE;
} else if( _FLOAT == what ) {
/* assign the default value for this option... */
*((double*)result) = *((double*)def);
if( *name ) {
/* get the configuration value and decode it */
name = sanei_config_get_string( name, &tmp2 );
if( tmp2 ) {
*((double*)result) = strtod( tmp2, 0 );
free( tmp2 );
}
}
free( tmp );
return SANE_TRUE;
}
}
free( tmp );
}
return SANE_FALSE;
}
/** function to retrive the device name of a given string
* @param src - string that keeps the option name to check src for
* @param dest - pointer to the string, that should receive the detected
* devicename
* @return The function returns SANE_TRUE if the devicename has been found,
* if not, it returns SANE_FALSE
*/
static SANE_Bool decodeDevName( char *src, char *dest )
{
char *tmp;
const char *name;
if( 0 == strncmp( "device", src, 6 )) {
name = (const char*)&src[strlen("device")];
name = sanei_config_skip_whitespace( name );
DBG( _DBG_SANE_INIT, "Decoding device name >%s<\n", name );
if( *name ) {
name = sanei_config_get_string( name, &tmp );
if( tmp ) {
strcpy( dest, tmp );
free( tmp );
return SANE_TRUE;
}
}
}
return SANE_FALSE;
}
/** attach a device to the backend
*/
static SANE_Status attach( const char *dev_name, pCnfDef cnf,
Plustek_Device **devp )
{
int cntr;
int result;
int handle;
SANE_Status status;
Plustek_Device *dev;
DBG( _DBG_SANE_INIT, "attach (%s, %p, %p)\n",
dev_name, (void *)cnf, (void *)devp);
/* already attached ?*/
for( dev = first_dev; dev; dev = dev->next ) {
if( 0 == strcmp( dev->sane.name, dev_name )) {
if( devp )
*devp = dev;
return SANE_STATUS_GOOD;
}
}
/* allocate some memory for the device */
dev = malloc( sizeof (*dev));
if( NULL == dev )
return SANE_STATUS_NO_MEM;
/* assign all the stuff we need fo this device... */
memset(dev, 0, sizeof (*dev));
dev->fd = -1;
dev->name = strdup(dev_name); /* hold it double to avoid */
dev->sane.name = dev->name; /* compiler warnings */
dev->sane.vendor = "Plustek";
dev->initialized = -1; /* will be used as index too */
memcpy( &dev->adj, &cnf->adj, sizeof(AdjDef));
show_cnf( cnf );
dev->sane.type = "parallel port flatbed scanner";
dev->open = ppDev_open;
dev->close = ppDev_close;
dev->getCaps = ppDev_getCaps;
dev->getLensInfo = ppDev_getLensInfo;
dev->getCropInfo = ppDev_getCropInfo;
dev->putImgInfo = ppDev_putImgInfo;
dev->setScanEnv = ppDev_setScanEnv;
dev->startScan = ppDev_startScan;
dev->stopScan = ppDev_stopScan;
dev->setMap = ppDev_setMap;
dev->readImage = ppDev_readImage;
dev->shutdown = NULL;
dev->readLine = NULL;
dev->prepare = NULL;
/*
* go ahead and open the scanner device
*/
handle = drvopen( dev );
if( handle < 0 ) {
DBG( _DBG_ERROR,"open failed: %d\n", handle );
return SANE_STATUS_IO_ERROR;
}
/* okay, so assign the handle... */
dev->fd = handle;
result = dev->getCaps( dev );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->getCaps() failed(%d)\n", result);
dev->close(dev);
return SANE_STATUS_IO_ERROR;
}
result = dev->getLensInfo( dev, &lens );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->getLensInfo() failed(%d)\n", result );
dev->close(dev);
return SANE_STATUS_IO_ERROR;
}
/* did we fail on connection? */
if( _NO_BASE == dev->caps.wIOBase ) {
DBG( _DBG_ERROR, "failed to find Plustek scanner\n" );
dev->close(dev);
return SANE_STATUS_INVAL;
}
/* save the info we got from the driver */
DBG( _DBG_INFO, "Scanner information:\n" );
if( dev->caps.Model < MODEL_UNKNOWN ) {
dev->sane.model = ModelStr[dev->caps.Model];
} else {
dev->sane.model = ModelStr[0];
}
DBG( _DBG_INFO, "Vendor : %s\n", dev->sane.vendor );
DBG( _DBG_INFO, "Model : %s\n", dev->sane.model );
DBG( _DBG_INFO, "Asic : 0x%02x\n", dev->caps.AsicID );
DBG( _DBG_INFO, "Flags : 0x%08lx\n", dev->caps.dwFlag );
dev->max_x = dev->caps.wMaxExtentX*MM_PER_INCH/_MEASURE_BASE;
dev->max_y = dev->caps.wMaxExtentY*MM_PER_INCH/_MEASURE_BASE;
dev->res_list = (SANE_Int *)calloc(((lens.rDpiX.wMax -_DEF_DPI)/25 + 1),
sizeof (SANE_Int)); /* one more to avoid a buffer overflow */
if (NULL == dev->res_list) {
DBG( _DBG_ERROR, "alloc fail, resolution problem\n" );
dev->close(dev);
return SANE_STATUS_INVAL;
}
/* build up the resolution table */
dev->res_list_size = 0;
for( cntr = _DEF_DPI; cntr <= lens.rDpiX.wMax; cntr += 25 ) {
dev->res_list_size++;
dev->res_list[dev->res_list_size - 1] = (SANE_Int)cntr;
}
status = limitResolution( dev );
dev->fd = handle;
drvclose( dev );
DBG( _DBG_SANE_INIT, "attach: model = >%s<\n", dev->sane.model );
++num_devices;
dev->next = first_dev;
first_dev = dev;
if (devp)
*devp = dev;
return SANE_STATUS_GOOD;
}
/** function to preset a configuration structure
* @param cnf - pointer to the structure that should be initialized
*/
static void init_config_struct( pCnfDef cnf, SANE_Bool direct_io )
{
memset( cnf, 0, sizeof(CnfDef));
cnf->adj.direct_io = direct_io;
cnf->adj.warmup = -1;
cnf->adj.lampOff = -1;
cnf->adj.lampOffOnEnd = -1;
cnf->adj.graygamma = 1.0;
cnf->adj.rgamma = 1.0;
cnf->adj.ggamma = 1.0;
cnf->adj.bgamma = 1.0;
}
/** intialize the backend
*/
SANE_Status sane_init( SANE_Int *version_code, SANE_Auth_Callback authorize )
{
char str[PATH_MAX] = _DEFAULT_DEVICE;
CnfDef config;
size_t len;
FILE *fp;
SANE_Status res;
DBG_INIT();
sanei_thread_init();
res = sanei_pp_init();
if( SANE_STATUS_GOOD != res ) {
DBG( _DBG_ERROR, "Could not initialize Parport library!\n" );
return res;
}
#if defined PACKAGE && defined VERSION
DBG( _DBG_SANE_INIT, "PlustekPP backend V"BACKEND_VERSION", part of "
PACKAGE " " VERSION "\n");
#else
DBG( _DBG_INFO, "PlustekPP backend V"BACKEND_VERSION"\n" );
#endif
/* do some presettings... */
auth = authorize;
first_dev = NULL;
first_handle = NULL;
num_devices = 0;
/* initialize the configuration structure */
#ifdef _BACKEND_ENABLED
init_config_struct( &config, SANE_TRUE );
#else
init_config_struct( &config, SANE_FALSE );
#endif
if( version_code != NULL )
*version_code = SANE_VERSION_CODE(V_MAJOR, V_MINOR, 0);
fp = sanei_config_open( PLUSTEK_CONFIG_FILE );
/* default to _DEFAULT_DEVICE instead of insisting on config file */
if( NULL == fp ) {
return attach( _DEFAULT_DEVICE, &config, 0 );
}
while( sanei_config_read( str, sizeof(str), fp)) {
DBG( _DBG_SANE_INIT, ">%s<\n", str );
if( str[0] == '#') /* ignore line comments */
continue;
len = strlen(str);
if( 0 == len )
continue; /* ignore empty lines */
/* check for options */
if( 0 == strncmp(str, "option", 6)) {
int ival;
ival = -1;
decodeVal( str, "warmup", _INT, &config.adj.warmup, &ival);
decodeVal( str, "lampOff", _INT, &config.adj.lampOff, &ival);
decodeVal( str, "lOffOnEnd", _INT, &config.adj.lampOffOnEnd,&ival);
ival = 0;
decodeVal( str, "mov", _INT, &config.adj.mov, &ival );
continue;
/* check for sections: */
} else if( 0 == strncmp( str, "[direct]", 8)) {
/* new section, try and attach previous device */
if( config.devName[0] != '\0' )
attach( config.devName, &config, 0 );
/* re-initialize the configuration structure */
init_config_struct( &config, SANE_TRUE );
continue;
} else if( 0 == strncmp( str, "[kernel]", 8 )) {
/* new section, try and attach previous device */
if( config.devName[0] != '\0' )
attach( config.devName, &config, 0 );
/* re-initialize the configuration structure */
init_config_struct( &config, SANE_FALSE );
continue;
} else if( SANE_TRUE == decodeDevName( str, config.devName )) {
continue;
}
/* ignore other stuff... */
DBG( _DBG_SANE_INIT, "ignoring >%s<\n", str );
}
fclose (fp);
/* try to attach the last device in the config file... */
if( config.devName[0] != '\0' )
attach( config.devName, &config, 0 );
return SANE_STATUS_GOOD;
}
/** cleanup the backend...
*/
void sane_exit( void )
{
Plustek_Device *dev, *next;
DBG( _DBG_SANE_INIT, "sane_exit\n" );
for( dev = first_dev; dev; ) {
next = dev->next;
/* call the shutdown function of each device... */
if( dev->shutdown )
dev->shutdown( dev );
/*
* we're doin' this to avoid compiler warnings as dev->sane.name
* is defined as const char*
*/
if( dev->sane.name )
free( dev->name );
if( dev->res_list )
free( dev->res_list );
free( dev );
dev = next;
}
if( devlist )
free( devlist );
/* call driver specific shutdown function... */
PtDrvShutdown();
devlist = NULL;
auth = NULL;
first_dev = NULL;
first_handle = NULL;
}
/** return a list of all devices
*/
SANE_Status sane_get_devices(const SANE_Device ***device_list,
SANE_Bool local_only )
{
int i;
Plustek_Device *dev;
DBG(_DBG_SANE_INIT, "sane_get_devices (%p, %ld)\n",
(void *)device_list, (long) local_only);
/* already called, so cleanup */
if( devlist )
free( devlist );
devlist = malloc((num_devices + 1) * sizeof (devlist[0]));
if ( NULL == devlist )
return SANE_STATUS_NO_MEM;
i = 0;
for (dev = first_dev; i < num_devices; dev = dev->next)
devlist[i++] = &dev->sane;
devlist[i++] = 0;
*device_list = devlist;
return SANE_STATUS_GOOD;
}
/** open the sane device
*/
SANE_Status sane_open( SANE_String_Const devicename, SANE_Handle* handle )
{
SANE_Status status;
Plustek_Device *dev;
Plustek_Scanner *s;
CnfDef config;
DBG( _DBG_SANE_INIT, "sane_open - %s\n", devicename );
if( devicename[0] ) {
for( dev = first_dev; dev; dev = dev->next ) {
if( strcmp( dev->sane.name, devicename ) == 0 )
break;
}
if( !dev ) {
memset( &config, 0, sizeof(CnfDef));
/* check if a valid parport-device is meant... */
status = attach( devicename, &config, &dev );
if( SANE_STATUS_GOOD != status )
return status;
}
} else {
/* empty devicename -> use first device */
dev = first_dev;
}
if( !dev )
return SANE_STATUS_INVAL;
s = malloc (sizeof (*s));
if( NULL == s )
return SANE_STATUS_NO_MEM;
memset(s, 0, sizeof (*s));
s->r_pipe = -1;
s->w_pipe = -1;
s->hw = dev;
s->scanning = SANE_FALSE;
init_options(s);
/* insert newly opened handle into list of open handles: */
s->next = first_handle;
first_handle = s;
*handle = s;
return SANE_STATUS_GOOD;
}
/**
*/
void sane_close (SANE_Handle handle)
{
Plustek_Scanner *prev, *s;
DBG( _DBG_SANE_INIT, "sane_close\n" );
/* remove handle from list of open handles: */
prev = 0;
for( s = first_handle; s; s = s->next ) {
if( s == handle )
break;
prev = s;
}
if (!s) {
DBG( _DBG_ERROR, "close: invalid handle %p\n", handle);
return;
}
close_pipe( s );
if( NULL != s->buf )
free(s->buf);
drvclose( s->hw );
if (prev)
prev->next = s->next;
else
first_handle = s->next;
free(s);
}
/** goes through a string list and returns the start-address of the string
* that has been found, or NULL on error
*/
static const SANE_String_Const *search_string_list(
const SANE_String_Const *list, SANE_String value )
{
while( *list != NULL && strcmp(value, *list) != 0 )
++list;
if( *list == NULL )
return NULL;
return list;
}
/** return or set the parameter values, also do some checks
*/
SANE_Status sane_control_option( SANE_Handle handle, SANE_Int option,
SANE_Action action, void *value,
SANE_Int * info)
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
SANE_Status status;
const SANE_String_Const *optval;
pModeParam mp;
int scanmode;
if ( s->scanning )
return SANE_STATUS_DEVICE_BUSY;
if((option < 0) || (option >= NUM_OPTIONS))
return SANE_STATUS_INVAL;
if( NULL != info )
*info = 0;
switch( action ) {
case SANE_ACTION_GET_VALUE:
switch (option) {
case OPT_PREVIEW:
case OPT_NUM_OPTS:
case OPT_RESOLUTION:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
case OPT_CUSTOM_GAMMA:
*(SANE_Word *)value = s->val[option].w;
break;
case OPT_CONTRAST:
case OPT_BRIGHTNESS:
*(SANE_Word *)value =
(s->val[option].w << SANE_FIXED_SCALE_SHIFT);
break;
case OPT_MODE:
case OPT_EXT_MODE:
case OPT_HALFTONE:
strcpy ((char *) value,
s->opt[option].constraint.string_list[s->val[option].w]);
break;
/* word array options: */
case OPT_GAMMA_VECTOR:
case OPT_GAMMA_VECTOR_R:
case OPT_GAMMA_VECTOR_G:
case OPT_GAMMA_VECTOR_B:
memcpy( value, s->val[option].wa, s->opt[option].size );
break;
default:
return SANE_STATUS_INVAL;
}
break;
case SANE_ACTION_SET_VALUE:
status = sanei_constrain_value( s->opt + option, value, info );
if( SANE_STATUS_GOOD != status )
return status;
optval = NULL;
if( SANE_CONSTRAINT_STRING_LIST == s->opt[option].constraint_type ) {
optval = search_string_list( s->opt[option].constraint.string_list,
(char *) value);
if( NULL == optval )
return SANE_STATUS_INVAL;
}
switch (option) {
case OPT_RESOLUTION: {
int n;
int min_d = s->hw->res_list[s->hw->res_list_size - 1];
int v = *(SANE_Word *)value;
int best = v;
for( n = 0; n < s->hw->res_list_size; n++ ) {
int d = abs(v - s->hw->res_list[n]);
if( d < min_d ) {
min_d = d;
best = s->hw->res_list[n];
}
}
s->val[option].w = (SANE_Word)best;
if( v != best )
*(SANE_Word *)value = best;
if( NULL != info ) {
if( v != best )
*info |= SANE_INFO_INEXACT;
*info |= SANE_INFO_RELOAD_PARAMS;
}
break;
}
case OPT_PREVIEW:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
s->val[option].w = *(SANE_Word *)value;
if( NULL != info )
*info |= SANE_INFO_RELOAD_PARAMS;
break;
case OPT_CUSTOM_GAMMA:
s->val[option].w = *(SANE_Word *)value;
if( NULL != info )
*info |= SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS;
mp = getModeList( s );
scanmode = mp[s->val[OPT_MODE].w].scanmode;
s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
if( SANE_TRUE == s->val[option].w ) {
if((scanmode == COLOR_256GRAY) ||
(scanmode == COLOR_GRAY16)) {
s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
} else {
s->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
}
} else {
initGammaSettings( s );
if((scanmode == COLOR_256GRAY) ||
(scanmode == COLOR_GRAY16)) {
s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
} else {
s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
}
}
break;
case OPT_CONTRAST:
case OPT_BRIGHTNESS:
s->val[option].w =
((*(SANE_Word *)value) >> SANE_FIXED_SCALE_SHIFT);
break;
case OPT_MODE: {
int idx = (optval - mode_list);
if((_ASIC_IS_98001 == s->hw->caps.AsicID) ||
(_ASIC_IS_98003 == s->hw->caps.AsicID)) {
idx = optval - mode_9800x_list;
}
mp = getModeList( s );
if( mp[idx].scanmode != COLOR_HALFTONE ){
s->opt[OPT_HALFTONE].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_CUSTOM_GAMMA].cap &= ~SANE_CAP_INACTIVE;
} else {
s->opt[OPT_HALFTONE].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
}
if( mp[idx].scanmode == COLOR_BW ) {
s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CUSTOM_GAMMA].cap |= SANE_CAP_INACTIVE;
}
s->opt[OPT_GAMMA_VECTOR].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_R].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap |= SANE_CAP_INACTIVE;
if( s->val[OPT_CUSTOM_GAMMA].w &&
!(s->opt[OPT_CUSTOM_GAMMA].cap & SANE_CAP_INACTIVE)) {
if((mp[idx].scanmode == COLOR_256GRAY) ||
(mp[idx].scanmode == COLOR_GRAY16)) {
s->opt[OPT_GAMMA_VECTOR].cap &= ~SANE_CAP_INACTIVE;
} else {
s->opt[OPT_GAMMA_VECTOR_R].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_G].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_GAMMA_VECTOR_B].cap &= ~SANE_CAP_INACTIVE;
}
}
if( NULL != info )
*info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
}
/* fall through to OPT_HALFTONE */
case OPT_HALFTONE:
s->val[option].w = optval - s->opt[option].constraint.string_list;
break;
case OPT_EXT_MODE: {
s->val[option].w = optval - s->opt[option].constraint.string_list;
/*
* change the area and mode_list when changing the source
*/
if( s->val[option].w == 0 ) {
s->hw->dpi_range.min = _DEF_DPI;
s->hw->x_range.max = SANE_FIX(s->hw->max_x);
s->hw->y_range.max = SANE_FIX(s->hw->max_y);
s->val[OPT_TL_X].w = SANE_FIX(_DEFAULT_TLX);
s->val[OPT_TL_Y].w = SANE_FIX(_DEFAULT_TLY);
s->val[OPT_BR_X].w = SANE_FIX(_DEFAULT_BRX);
s->val[OPT_BR_Y].w = SANE_FIX(_DEFAULT_BRY);
s->val[OPT_MODE].w = 3; /* COLOR_TRUE24 */
if((_ASIC_IS_98001 == s->hw->caps.AsicID) ||
(_ASIC_IS_98003 == s->hw->caps.AsicID)) {
s->opt[OPT_MODE].constraint.string_list = mode_9800x_list;
} else {
s->opt[OPT_MODE].constraint.string_list = mode_list;
}
} else {
s->hw->dpi_range.min = _TPAMinDpi;
if( s->val[option].w == 1 ) {
s->hw->x_range.max = SANE_FIX(_TP_X);
s->hw->y_range.max = SANE_FIX(_TP_Y);
s->val[OPT_TL_X].w = SANE_FIX(_DEFAULT_TP_TLX);
s->val[OPT_TL_Y].w = SANE_FIX(_DEFAULT_TP_TLY);
s->val[OPT_BR_X].w = SANE_FIX(_DEFAULT_TP_BRX);
s->val[OPT_BR_Y].w = SANE_FIX(_DEFAULT_TP_BRY);
} else {
s->hw->x_range.max = SANE_FIX(_NEG_X);
s->hw->y_range.max = SANE_FIX(_NEG_Y);
s->val[OPT_TL_X].w = SANE_FIX(_DEFAULT_NEG_TLX);
s->val[OPT_TL_Y].w = SANE_FIX(_DEFAULT_NEG_TLY);
s->val[OPT_BR_X].w = SANE_FIX(_DEFAULT_NEG_BRX);
s->val[OPT_BR_Y].w = SANE_FIX(_DEFAULT_NEG_BRY);
}
if( s->hw->caps.dwFlag & SFLAG_TPA ) {
s->opt[OPT_MODE].constraint.string_list =
&mode_9800x_list[_TPAModeSupportMin];
} else {
s->opt[OPT_MODE].constraint.string_list =
&mode_list[_TPAModeSupportMin];
}
s->val[OPT_MODE].w = 0; /* COLOR_24 is the default */
}
s->opt[OPT_HALFTONE].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
if( NULL != info )
*info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
break;
}
case OPT_GAMMA_VECTOR:
case OPT_GAMMA_VECTOR_R:
case OPT_GAMMA_VECTOR_G:
case OPT_GAMMA_VECTOR_B:
memcpy( s->val[option].wa, value, s->opt[option].size );
checkGammaSettings(s);
if( NULL != info )
*info |= SANE_INFO_RELOAD_PARAMS;
break;
default:
return SANE_STATUS_INVAL;
}
break;
default:
return SANE_STATUS_INVAL;
}
return SANE_STATUS_GOOD;
}
/** according to the option number, return a pointer to a descriptor
*/
const SANE_Option_Descriptor *
sane_get_option_descriptor( SANE_Handle handle, SANE_Int option )
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
if((option < 0) || (option >= NUM_OPTIONS))
return NULL;
return &(s->opt[option]);
}
/** return the current parameter settings
*/
SANE_Status sane_get_parameters( SANE_Handle handle, SANE_Parameters *params )
{
int ndpi;
pModeParam mp;
Plustek_Scanner *s = (Plustek_Scanner *)handle;
/* if we're calling from within, calc best guess
* do the same, if sane_get_parameters() is called
* by a frontend before sane_start() is called
*/
if((NULL == params) || (s->scanning != SANE_TRUE)) {
mp = getModeList( s );
memset( &s->params, 0, sizeof (SANE_Parameters));
ndpi = s->val[OPT_RESOLUTION].w;
s->params.pixels_per_line = SANE_UNFIX(s->val[OPT_BR_X].w -
s->val[OPT_TL_X].w) / MM_PER_INCH * ndpi;
s->params.lines = SANE_UNFIX( s->val[OPT_BR_Y].w -
s->val[OPT_TL_Y].w) / MM_PER_INCH * ndpi;
/* pixels_per_line seems to be 8 * n. */
/* s->params.pixels_per_line = s->params.pixels_per_line & ~7; debug only */
s->params.last_frame = SANE_TRUE;
s->params.depth = mp[s->val[OPT_MODE].w].depth;
if( mp[s->val[OPT_MODE].w].color ) {
s->params.format = SANE_FRAME_RGB;
s->params.bytes_per_line = 3 * s->params.pixels_per_line;
} else {
s->params.format = SANE_FRAME_GRAY;
if (s->params.depth == 1)
s->params.bytes_per_line = (s->params.pixels_per_line + 7) / 8;
else
s->params.bytes_per_line = s->params.pixels_per_line *
s->params.depth / 8;
}
/* if sane_get_parameters() was called before sane_start() */
/* pass new values to the caller */
if ((NULL != params) && (s->scanning != SANE_TRUE))
*params = s->params;
} else
*params = s->params;
return SANE_STATUS_GOOD;
}
/** initiate the scan process
*/
SANE_Status sane_start( SANE_Handle handle )
{
Plustek_Scanner *s = (Plustek_Scanner *) handle;
pModeParam mp;
int result;
int ndpi;
int left, top;
int width, height;
int scanmode;
int fds[2];
StartScan start;
CropInfo crop;
ScanInfo sinfo;
SANE_Status status;
SANE_Word tmp;
DBG( _DBG_SANE_INIT, "sane_start\n" );
if( s->scanning ) {
return SANE_STATUS_DEVICE_BUSY;
}
status = sane_get_parameters (handle, NULL);
if (status != SANE_STATUS_GOOD) {
DBG( _DBG_ERROR, "sane_get_parameters failed\n" );
return status;
}
/*
* open the driver and get some information about the scanner
*/
s->hw->fd = drvopen( s->hw );
if( s->hw->fd < 0 ) {
DBG( _DBG_ERROR,"sane_start: open failed: %d\n", errno );
if( errno == EBUSY )
return SANE_STATUS_DEVICE_BUSY;
return SANE_STATUS_IO_ERROR;
}
result = s->hw->getCaps( s->hw );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->getCaps() failed(%d)\n", result);
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
result = s->hw->getLensInfo( s->hw, &lens );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->getLensInfo() failed(%d)\n", result );
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
/* did we fail on connection? */
if ( s->hw->caps.wIOBase == _NO_BASE ) {
DBG( _DBG_ERROR, "failed to find Plustek scanner\n" );
s->hw->close( s->hw );
return SANE_STATUS_INVAL;
}
/* All ready to go. Set image def and see what the scanner
* says for crop info.
*/
ndpi = s->val[OPT_RESOLUTION].w;
/* exchange the values as we can't deal with negative heights and so on...*/
tmp = s->val[OPT_TL_X].w;
if( tmp > s->val[OPT_BR_X].w ) {
DBG( _DBG_INFO, "exchanging BR-X - TL-X\n" );
s->val[OPT_TL_X].w = s->val[OPT_BR_X].w;
s->val[OPT_BR_X].w = tmp;
}
tmp = s->val[OPT_TL_Y].w;
if( tmp > s->val[OPT_BR_Y].w ) {
DBG( _DBG_INFO, "exchanging BR-Y - TL-Y\n" );
s->val[OPT_TL_Y].w = s->val[OPT_BR_Y].w;
s->val[OPT_BR_Y].w = tmp;
}
/* position and extent are always relative to 300 dpi */
left = (int)(SANE_UNFIX (s->val[OPT_TL_X].w)*(double)lens.rDpiX.wPhyMax/
(MM_PER_INCH*((double)lens.rDpiX.wPhyMax/300.0)));
top = (int)(SANE_UNFIX (s->val[OPT_TL_Y].w)*(double)lens.rDpiY.wPhyMax/
(MM_PER_INCH*((double)lens.rDpiY.wPhyMax/300.0)));
width = (int)(SANE_UNFIX (s->val[OPT_BR_X].w - s->val[OPT_TL_X].w) *
(double)lens.rDpiX.wPhyMax /
(MM_PER_INCH *((double)lens.rDpiX.wPhyMax/300.0)));
height = (int)(SANE_UNFIX (s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w) *
(double)lens.rDpiY.wPhyMax /
(MM_PER_INCH *((double)lens.rDpiY.wPhyMax/300.0)));
/*
* adjust mode list according to the model we use and the
* source we have
*/
mp = getModeList( s );
scanmode = mp[s->val[OPT_MODE].w].scanmode;
DBG( _DBG_INFO, "scanmode = %u\n", scanmode );
/* clear it out just in case */
memset (&sinfo, 0, sizeof(sinfo));
sinfo.ImgDef.xyDpi.x = ndpi;
sinfo.ImgDef.xyDpi.y = ndpi;
sinfo.ImgDef.crArea.x = left; /* offset from left edge to area you want to scan */
sinfo.ImgDef.crArea.y = top; /* offset from top edge to area you want to scan */
sinfo.ImgDef.crArea.cx = width; /* always relative to 300 dpi */
sinfo.ImgDef.crArea.cy = height;
sinfo.ImgDef.wDataType = scanmode;
/*
* CHECK: what about the 10 bit mode?
*/
#if 0
if( COLOR_TRUE48 == scanmode )
sinfo.ImgDef.wBits = OUTPUT_12Bits;
else if( COLOR_TRUE32 == scanmode )
sinfo.ImgDef.wBits = OUTPUT_10Bits;
else
sinfo.ImgDef.wBits = OUTPUT_8Bits;
#endif
sinfo.ImgDef.dwFlag = SCANDEF_QualityScan;
switch( s->val[OPT_EXT_MODE].w ) {
case 1: sinfo.ImgDef.dwFlag |= SCANDEF_Transparency; break;
case 2: sinfo.ImgDef.dwFlag |= SCANDEF_Negative; break;
default: break;
}
/* only for parallel-port devices */
if( s->hw->putImgInfo ) {
result = s->hw->putImgInfo( s->hw, &sinfo.ImgDef );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->putImgInfo failed(%d)\n", result );
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
} else {
memcpy( &(crop.ImgDef), &sinfo.ImgDef, sizeof(ImgDef));
}
result = s->hw->getCropInfo( s->hw, &crop );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->getCropInfo() failed(%d)\n", result );
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
/* DataInf.dwAppPixelsPerLine = crop.dwPixelsPerLine; */
s->params.pixels_per_line = crop.dwPixelsPerLine;
s->params.bytes_per_line = crop.dwBytesPerLine;
s->params.lines = crop.dwLinesPerArea;
/* build a SCANINFO block and get ready to scan it */
sinfo.ImgDef.dwFlag |= (SCANDEF_BuildBwMap | SCANDEF_QualityScan);
/* set adjustments for brightness and contrast */
sinfo.siBrightness = s->val[OPT_BRIGHTNESS].w;
sinfo.siContrast = s->val[OPT_CONTRAST].w;
sinfo.wDither = s->val[OPT_HALFTONE].w;
DBG( _DBG_SANE_INIT, "bright %i contrast %i\n", sinfo.siBrightness,
sinfo.siContrast);
result = s->hw->setScanEnv( s->hw, &sinfo );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->setEnv() failed(%d)\n", result );
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
/* download gamma correction tables... */
if( scanmode <= COLOR_256GRAY || scanmode == COLOR_GRAY16 ) {
s->hw->setMap( s->hw, s->gamma_table[0], s->gamma_length, _MAP_MASTER);
} else {
s->hw->setMap( s->hw, s->gamma_table[1], s->gamma_length, _MAP_RED );
s->hw->setMap( s->hw, s->gamma_table[2], s->gamma_length, _MAP_GREEN );
s->hw->setMap( s->hw, s->gamma_table[3], s->gamma_length, _MAP_BLUE );
}
/* work-around for USB... */
start.dwLinesPerScan = s->params.lines;
result = s->hw->startScan( s->hw, &start );
if( result < 0 ) {
DBG( _DBG_ERROR, "dev->startScan() failed(%d)\n", result );
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
DBG( _DBG_SANE_INIT, "dwflag = 0x%lx dwBytesPerLine = %ld, "
"dwLinesPerScan = %ld\n",
start.dwFlag, start.dwBytesPerLine, start.dwLinesPerScan);
s->buf = realloc( s->buf, (s->params.lines) * s->params.bytes_per_line );
if( NULL == s->buf ) {
DBG( _DBG_ERROR, "realloc failed\n" );
s->hw->close( s->hw );
return SANE_STATUS_NO_MEM;
}
s->scanning = SANE_TRUE;
tsecs = (unsigned long)time(NULL);
DBG( _DBG_INFO, "TIME START\n" );
/*
* everything prepared, so start the child process and a pipe to communicate
* pipe --> fds[0]=read-fd, fds[1]=write-fd
*/
if( pipe(fds) < 0 ) {
DBG( _DBG_ERROR, "ERROR: could not create pipe\n" );
s->scanning = SANE_FALSE;
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
/* create reader routine as new process */
s->bytes_read = 0;
s->r_pipe = fds[0];
s->w_pipe = fds[1];
s->reader_pid = sanei_thread_begin( reader_process, s );
if( s->reader_pid < 0 ) {
DBG( _DBG_ERROR, "ERROR: could not create child process\n" );
s->scanning = SANE_FALSE;
s->hw->close( s->hw );
return SANE_STATUS_IO_ERROR;
}
/* reader_pid = 0 ===> child process */
#if 0
if( 0 == s->reader_pid ) {
sigset_t ignore_set;
struct SIGACTION act;
DBG( _DBG_SANE_INIT, "reader process...\n" );
close(fds[0]);
sigfillset ( &ignore_set );
sigdelset ( &ignore_set, SIGTERM );
sigprocmask( SIG_SETMASK, &ignore_set, 0 );
memset ( &act, 0, sizeof (act));
sigaction( SIGTERM, &act, 0 );
status = reader_process( s, fds[1] );
DBG( _DBG_SANE_INIT, "reader process done, status = %i\n", status );
/* don't use exit() since that would run the atexit() handlers */
_exit( status );
}
#endif
signal( SIGCHLD, sig_chldhandler );
if( sanei_thread_is_forked()) {
close( s->w_pipe );
s->w_pipe = -1;
}
DBG( _DBG_SANE_INIT, "sane_start done\n" );
return SANE_STATUS_GOOD;
}
/** function to read the data from our child process
*/
SANE_Status sane_read( SANE_Handle handle, SANE_Byte *data,
SANE_Int max_length, SANE_Int *length )
{
Plustek_Scanner *s = (Plustek_Scanner*)handle;
ssize_t nread;
*length = 0;
/* here we read all data from the driver... */
nread = read( s->r_pipe, data, max_length );
DBG( _DBG_READ, "sane_read - read %ld bytes\n", (long)nread );
if (!(s->scanning)) {
return do_cancel( s, SANE_TRUE );
}
if( nread < 0 ) {
if( EAGAIN == errno ) {
/* if we had already red the picture, so it's okay and stop */
if( s->bytes_read ==
(unsigned long)(s->params.lines * s->params.bytes_per_line)) {
sanei_thread_waitpid( s->reader_pid, 0 );
s->reader_pid = -1;
drvclose( s->hw );
return close_pipe(s);
}
/* else force the frontend to try again*/
return SANE_STATUS_GOOD;
} else {
DBG( _DBG_ERROR, "ERROR: errno=%d\n", errno );
do_cancel( s, SANE_TRUE );
return SANE_STATUS_IO_ERROR;
}
}
*length = nread;
s->bytes_read += nread;
/* nothing red means that we're finished OR we had a problem...*/
if( 0 == nread ) {
drvclose( s->hw );
s->exit_code = sanei_thread_get_status( s->reader_pid );
if( SANE_STATUS_GOOD != s->exit_code ) {
close_pipe(s);
return s->exit_code;
}
s->reader_pid = -1;
return close_pipe(s);
}
return SANE_STATUS_GOOD;
}
/** cancel the scanning process
*/
void sane_cancel (SANE_Handle handle)
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
DBG( _DBG_SANE_INIT, "sane_cancel\n" );
if( s->scanning )
do_cancel( s, SANE_FALSE );
}
/** set the pipe to blocking/non blocking mode
*/
SANE_Status sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
DBG( _DBG_SANE_INIT, "sane_set_io_mode: non_blocking=%d\n",non_blocking );
if ( !s->scanning ) {
DBG( _DBG_ERROR, "ERROR: not scanning !\n" );
return SANE_STATUS_INVAL;
}
if( -1 == s->r_pipe ) {
DBG( _DBG_ERROR, "ERROR: not supported !\n" );
return SANE_STATUS_UNSUPPORTED;
}
if( fcntl (s->r_pipe, F_SETFL, non_blocking ? O_NONBLOCK : 0) < 0) {
DBG( _DBG_ERROR, "ERROR: can<61>t set to non-blocking mode !\n" );
return SANE_STATUS_IO_ERROR;
}
DBG( _DBG_SANE_INIT, "sane_set_io_mode done\n" );
return SANE_STATUS_GOOD;
}
/** return the descriptor if available
*/
SANE_Status sane_get_select_fd( SANE_Handle handle, SANE_Int * fd )
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
DBG( _DBG_SANE_INIT, "sane_get_select_fd\n" );
if( !s->scanning ) {
DBG( _DBG_ERROR, "ERROR: not scanning !\n" );
return SANE_STATUS_INVAL;
}
*fd = s->r_pipe;
DBG( _DBG_SANE_INIT, "sane_get_select_fd done\n" );
return SANE_STATUS_GOOD;
}
/* END PLUSTEK_PP.C .........................................................*/
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