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sane-project-backends/backend/u12.c

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C
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/** @file u12.c
* @brief SANE backend for USB scanner, based on Plusteks' ASIC P98003 and
* the GeneSys Logic GL640 parallel-port to USB bridge.
*
* Based on source aquired from Plustek<br>
* Copyright (c) 2003-2004 Gerhard Jaeger <gerhard@gjaeger.de><br>
*
* History:
* - 0.01 - initial version
* - 0.02 - enabled other scan-modes
* - increased default gamma to 1.5
*.
* <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>
*/
#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>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#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 "0.02-11"
#define BACKEND_NAME u12
#include "../include/sane/sanei_backend.h"
#include "../include/sane/sanei_config.h"
#include "../include/sane/sanei_thread.h"
#include "../include/sane/sanei_usb.h"
#define ALL_MODES
#include "u12-scanner.h"
#include "u12-hwdef.h"
#include "u12.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_IO 128
#define _DBG_READ 255
/* uncomment this for testing... */
/*#define _FAKE_DEVICE
*/
/*****************************************************************************/
#define _SECTION "[usb]"
#define _DEFAULT_DEVICE "auto"
/* including the "worker" code... */
#include "u12-io.c"
#include "u12-ccd.c"
#include "u12-hw.c"
#include "u12-motor.c"
#include "u12-image.c"
#include "u12-map.c"
#include "u12-shading.c"
#include "u12-tpa.c"
#include "u12-if.c"
/************************** global vars **************************************/
static int num_devices;
static U12_Device *first_dev;
static U12_Scanner *first_handle;
static const SANE_Device **devlist = 0;
static unsigned long tsecs = 0;
static SANE_Bool cancelRead;
#ifdef ALL_MODES
static ModeParam mode_params[] =
{
{0, 1, COLOR_BW},
{0, 8, COLOR_256GRAY},
{1, 8, COLOR_TRUE24},
{1, 16, COLOR_TRUE42}
};
static const SANE_String_Const mode_list[] =
{
SANE_VALUE_SCAN_MODE_LINEART,
SANE_VALUE_SCAN_MODE_GRAY,
SANE_VALUE_SCAN_MODE_COLOR,
SANE_I18N("Color 36"),
NULL
};
static const SANE_String_Const src_list[] =
{
SANE_I18N("Normal"),
SANE_I18N("Transparency"),
SANE_I18N("Negative"),
NULL
};
#endif
static const SANE_Range percentage_range =
{
-100 << SANE_FIXED_SCALE_SHIFT, /* minimum */
100 << SANE_FIXED_SCALE_SHIFT, /* maximum */
1 << SANE_FIXED_SCALE_SHIFT /* quantization */
};
/* 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,"USB-ID : >%s<\n",cnf->usbId );
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,"red Gamma : %.2f\n",cnf->adj.rgamma );
DBG( _DBG_SANE_INIT,"green Gamma : %.2f\n",cnf->adj.ggamma );
DBG( _DBG_SANE_INIT,"blue Gamma : %.2f\n",cnf->adj.bgamma );
DBG( _DBG_SANE_INIT,"gray Gamma : %.2f\n",cnf->adj.graygamma );
DBG( _DBG_SANE_INIT,"---------------------\n" );
}
/** 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( U12_Device *dev )
{
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 */
u12if_stopScan( dev );
u12if_close ( dev );
}
dev->fd = -1;
return SANE_STATUS_GOOD;
}
/** as the name says, close our pipes
* @param scanner -
* @return
*/
static SANE_Status drvClosePipes( U12_Scanner *scanner )
{
if( scanner->r_pipe >= 0 ) {
DBG( _DBG_PROC, "drvClosePipes(r_pipe)\n" );
close( scanner->r_pipe );
scanner->r_pipe = -1;
}
if( scanner->w_pipe >= 0 ) {
DBG( _DBG_PROC, "drvClosePipes(w_pipe)\n" );
close( scanner->w_pipe );
scanner->w_pipe = -1;
}
return SANE_STATUS_EOF;
}
#ifdef ALL_MODES
/** according to the mode and source we return the corresponding mode list
*/
static pModeParam getModeList( U12_Scanner *scanner )
{
pModeParam mp = mode_params;
/* the transparency/negative mode supports only gray and color
*/
if( 0 != scanner->val[OPT_EXT_MODE].w ) {
mp = &mp[_TPAModeSupportMin];
}
return mp;
}
#endif
/** 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;
}
/**
*/
static void sig_chldhandler( int signo )
{
DBG( _DBG_PROC, "(SIG) 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, "(SIG) reader_process: terminated by signal %d\n", signo );
_exit( SANE_STATUS_GOOD );
}
static RETSIGTYPE usb_reader_process_sigterm_handler( int signo )
{
DBG( _DBG_PROC, "(SIG) reader_process: terminated by signal %d\n", signo );
cancelRead = SANE_TRUE;
}
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 char *buf;
unsigned long data_length;
struct SIGACTION act;
sigset_t ignore_set;
SANE_Status status;
U12_Scanner *scanner = (U12_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 );
cancelRead = SANE_FALSE;
/* install the signal handler */
memset( &act, 0, sizeof (act));
sigemptyset(&(act.sa_mask));
act.sa_flags = 0;
act.sa_handler = reader_process_sigterm_handler;
sigaction( SIGTERM, &act, 0 );
act.sa_handler = usb_reader_process_sigterm_handler;
sigaction( SIGUSR1, &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 scanner... */
buf = scanner->buf;
status = u12if_prepare( scanner->hw );
if( SANE_STATUS_GOOD == status ) {
for( line = 0; line < scanner->params.lines; line++ ) {
status = u12if_readLine( scanner->hw, buf );
if( SANE_STATUS_GOOD != status ) {
break;
}
write( scanner->w_pipe, buf, scanner->params.bytes_per_line );
buf += scanner->params.bytes_per_line;
}
}
close( scanner->w_pipe );
scanner->w_pipe = -1;
/* on error, there's no need to clean up, as this is done by the parent */
if( SANE_STATUS_GOOD != status ) {
DBG( _DBG_ERROR, "read failed, status = %i\n", (int)status );
return status;
}
DBG( _DBG_PROC, "reader_process: finished reading data\n" );
return SANE_STATUS_GOOD;
}
/** stop the current scan process
*/
static SANE_Status do_cancel( U12_Scanner *scanner, SANE_Bool closepipe )
{
struct SIGACTION act;
pid_t res;
DBG( _DBG_PROC,"do_cancel\n" );
scanner->scanning = SANE_FALSE;
if( scanner->reader_pid > 0 ) {
DBG( _DBG_PROC, ">>>>>>>> killing reader_process <<<<<<<<\n" );
cancelRead = SANE_TRUE;
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_sendsig( scanner->reader_pid, SIGUSR1 );
/* 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( scanner->hw->fd >= 0 ) {
u12hw_CancelSequence( scanner->hw );
}
#ifndef HAVE_SETITIMER
u12hw_StartLampTimer( scanner->hw );
#endif
}
if( SANE_TRUE == closepipe ) {
drvClosePipes( scanner );
}
drvClose( scanner->hw );
if( tsecs != 0 ) {
DBG( _DBG_INFO, "TIME END 2: %lus\n", time(NULL)-tsecs);
tsecs = 0;
}
return SANE_STATUS_CANCELLED;
}
/** initialize the options for the backend according to the device we have
*/
static SANE_Status init_options( U12_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;
#ifdef ALL_MODES
/* 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;
s->opt[OPT_MODE].constraint.string_list = mode_list;
s->val[OPT_MODE].w = COLOR_TRUE24;
/* 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 = src_list;
s->val[OPT_EXT_MODE].w = 0; /* Normal */
#endif
/* 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;
u12map_InitGammaSettings( s->hw );
/* 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->hw->gamma_table[0][0]);
s->opt[OPT_GAMMA_VECTOR].constraint.range = &(s->hw->gamma_range);
s->opt[OPT_GAMMA_VECTOR].size = s->hw->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->hw->gamma_table[1][0]);
s->opt[OPT_GAMMA_VECTOR_R].constraint.range = &(s->hw->gamma_range);
s->opt[OPT_GAMMA_VECTOR_R].size = s->hw->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->hw->gamma_table[2][0]);
s->opt[OPT_GAMMA_VECTOR_G].constraint.range = &(s->hw->gamma_range);
s->opt[OPT_GAMMA_VECTOR_G].size = s->hw->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->hw->gamma_table[3][0]);
s->opt[OPT_GAMMA_VECTOR_B].constraint.range = &(s->hw->gamma_range);
s->opt[OPT_GAMMA_VECTOR_B].size = s->hw->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;
#ifdef ALL_MODES
/* disable extended mode list for devices without TPA */
if( SANE_FALSE == s->hw->Tpa ) {
s->opt[OPT_EXT_MODE].cap |= SANE_CAP_INACTIVE;
}
#endif
return SANE_STATUS_GOOD;
}
/** Function to retrieve the vendor and product id from a given string
* @param src - string, that should be investigated
* @param dest - pointer to a string to receive the USB ID
*/
static void decodeUsbIDs( char *src, char **dest )
{
const char *name;
char *tmp = *dest;
int len = strlen(_SECTION);
if( isspace(src[len])) {
strncpy( tmp, &src[len+1], (strlen(src)-(len+1)));
tmp[(strlen(src)-(len+1))] = '\0';
}
name = tmp;
name = sanei_config_skip_whitespace( name );
if( '\0' == name[0] ) {
DBG( _DBG_SANE_INIT, "next device uses autodetection\n" );
} else {
u_short pi = 0, vi = 0;
if( *name ) {
name = sanei_config_get_string( name, &tmp );
if( tmp ) {
vi = strtol( tmp, 0, 0 );
free( tmp );
}
}
name = sanei_config_skip_whitespace( name );
if( *name ) {
name = sanei_config_get_string( name, &tmp );
if( tmp ) {
pi = strtol( tmp, 0, 0 );
free( tmp );
}
}
/* create what we need to go through our device list...*/
sprintf( *dest, "0x%04X-0x%04X", vi, pi );
DBG( _DBG_SANE_INIT, "next device is a USB device (%s)\n", *dest );
}
}
#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, U12_Device **devp )
{
int result;
int handle;
U12_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->sane.model = "U12/1212U";
dev->sane.type = SANE_I18N ("flatbed scanner");
dev->initialized = SANE_FALSE;
memcpy( &dev->adj, &cnf->adj, sizeof(AdjDef));
show_cnf( cnf );
strncpy( dev->usbId, cnf->usbId, _MAX_ID_LEN );
/* go ahead and open the scanner device */
handle = u12if_open( 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;
/* now check what we have */
result = u12if_getCaps( dev );
if( result < 0 ) {
DBG( _DBG_ERROR, "u12if_getCaps() failed(%d)\n", result);
u12if_close( dev );
return SANE_STATUS_IO_ERROR;
}
/* save the info we got from the driver */
DBG( _DBG_INFO, "Scanner information:\n" );
DBG( _DBG_INFO, "Vendor : %s\n", dev->sane.vendor );
DBG( _DBG_INFO, "Model : %s\n", dev->sane.model );
DBG( _DBG_INFO, "Flags : 0x%08lx\n", dev->caps.flag );
if( SANE_STATUS_GOOD != u12if_SetupBuffer( dev )) {
DBG( _DBG_ERROR, "u12if_SetupBuffer() failed\n" );
u12if_close( dev );
return SANE_STATUS_NO_MEM;
}
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 )
{
memset( cnf, 0, sizeof(CnfDef));
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;
DBG_INIT();
sanei_usb_init();
sanei_thread_init();
DBG( _DBG_INFO, "U12 backend V"
BACKEND_VERSION", part of "PACKAGE " " VERSION "\n");
/* do some presettings... */
auth = authorize;
first_dev = NULL;
first_handle = NULL;
num_devices = 0;
/* initialize the configuration structure */
init_config_struct( &config );
if( version_code != NULL )
*version_code = SANE_VERSION_CODE(V_MAJOR, V_MINOR, 0);
fp = sanei_config_open( U12_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;
double dval;
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;
dval = 1.5;
decodeVal( str, "grayGamma", _FLOAT, &config.adj.graygamma,&dval);
decodeVal( str, "redGamma", _FLOAT, &config.adj.rgamma, &dval );
decodeVal( str, "greenGamma", _FLOAT, &config.adj.ggamma, &dval );
decodeVal( str, "blueGamma", _FLOAT, &config.adj.bgamma, &dval );
continue;
/* check for sections: */
} else if( 0 == strncmp( str, _SECTION, strlen(_SECTION))) {
char *tmp;
/* new section, try and attach previous device */
if( config.devName[0] != '\0' ) {
attach( config.devName, &config, 0 );
} else {
if( first_dev != NULL ) {
DBG( _DBG_WARNING, "section contains no device name,"
" ignored!\n" );
}
}
/* re-initialize the configuration structure */
init_config_struct( &config );
tmp = config.usbId;
decodeUsbIDs( str, &tmp );
DBG( _DBG_SANE_INIT, "... next device\n" );
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 )
{
U12_Device *dev, *next;
DBG( _DBG_SANE_INIT, "sane_exit\n" );
for( dev = first_dev; dev; ) {
next = dev->next;
u12if_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 );
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;
U12_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;
U12_Device *dev;
U12_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));
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 )
{
U12_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;
}
drvClosePipes( s );
if( NULL != s->buf )
free(s->buf);
if( NULL != s->hw->bufs.b1.pReadBuf )
free( s->hw->bufs.b1.pReadBuf );
if( NULL != s->hw->shade.pHilight )
free( s->hw->shade.pHilight );
if( NULL != s->hw->scaleBuf )
free( s->hw->scaleBuf );
drvClose( s->hw );
if (prev)
prev->next = s->next;
else
first_handle = s->next;
free(s);
}
/** 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)
{
U12_Scanner *s = (U12_Scanner *)handle;
SANE_Status status;
const SANE_String_Const *optval;
#ifdef ALL_MODES
pModeParam mp;
int idx;
#endif
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;
#ifdef ALL_MODES
case OPT_MODE:
case OPT_EXT_MODE:
strcpy ((char *) value,
s->opt[option].constraint.string_list[s->val[option].w]);
break;
#endif
/* 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;
#ifdef ALL_MODES
mp = getModeList( s );
scanmode = mp[s->val[OPT_MODE].w].scanmode;
#else
scanmode = COLOR_TRUE24;
#endif
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 ) {
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 {
u12map_InitGammaSettings( s->hw );
if( scanmode == COLOR_256GRAY ) {
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;
#ifdef ALL_MODES
case OPT_MODE:
idx = (optval - mode_list);
mp = getModeList( s );
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 ) {
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;
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->opt[OPT_MODE].constraint.string_list = mode_list;
s->val[OPT_MODE].w = COLOR_TRUE24;
} 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);
}
s->opt[OPT_MODE].constraint.string_list =
&mode_list[_TPAModeSupportMin];
s->val[OPT_MODE].w = 0; /* COLOR_24 is the default */
}
s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
if( NULL != info )
*info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
break;
}
#endif
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 );
u12map_CheckGammaSettings(s->hw);
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 )
{
U12_Scanner *s = (U12_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;
#ifdef ALL_MODES
pModeParam mp;
#endif
U12_Scanner *s = (U12_Scanner *)handle;
/* if we're called 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)) {
#ifdef ALL_MODES
mp = getModeList( s );
#endif
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;
#ifdef ALL_MODES
s->params.depth = mp[s->val[OPT_MODE].w].depth;
#else
s->params.depth = 8;
s->params.format = SANE_FRAME_RGB;
s->params.bytes_per_line = 3 * s->params.pixels_per_line;
#endif
#ifdef ALL_MODES
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;
}
#endif
/* 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 )
{
U12_Scanner *s = (U12_Scanner *)handle;
U12_Device *dev;
#ifdef ALL_MODES
ModeParam *mp;
#endif
int result;
int ndpi;
int left, top;
int width, height;
int scanmode;
int fds[2];
double dpi_x, dpi_y;
ImgDef image;
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;
}
dev = s->hw;
/* open the driver and get some information about the scanner
*/
dev->fd = u12if_open( dev );
if( dev->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;
}
tsecs = 0;
result = u12if_getCaps( dev );
if( result < 0 ) {
DBG( _DBG_ERROR, "u12if_getCaps() failed(%d)\n", result);
u12if_close( dev );
return SANE_STATUS_IO_ERROR;
}
/* 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 */
dpi_x = (double)dev->dpi_max_x;
dpi_y = (double)dev->dpi_max_y;
left = (int)(SANE_UNFIX(s->val[OPT_TL_X].w)* dpi_x/
(_MM_PER_INCH*(dpi_x/_MEASURE_BASE)));
top = (int)(SANE_UNFIX(s->val[OPT_TL_Y].w)*dpi_y/
(_MM_PER_INCH*(dpi_y/_MEASURE_BASE)));
width = (int)(SANE_UNFIX(s->val[OPT_BR_X].w - s->val[OPT_TL_X].w) *
dpi_x / (_MM_PER_INCH *(dpi_x/_MEASURE_BASE)));
height = (int)(SANE_UNFIX(s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w) *
dpi_y / (_MM_PER_INCH *(dpi_y/_MEASURE_BASE)));
if((width == 0) || (height == 0)) {
DBG( _DBG_ERROR, "invalid width or height!\n" );
return SANE_STATUS_INVAL;
}
/* adjust mode list according to the model we use and the source we have
*/
#ifdef ALL_MODES
mp = getModeList( s );
scanmode = mp[s->val[OPT_MODE].w].scanmode;
#else
scanmode = COLOR_TRUE24;
#endif
DBG( _DBG_INFO, "scanmode = %u\n", scanmode );
/* clear it out just in case */
memset (&image, 0, sizeof(ImgDef));
/* this is what we want */
image.xyDpi.x = ndpi;
image.xyDpi.y = ndpi;
image.crArea.x = left; /* offset from left edge to area you want to scan */
image.crArea.y = top; /* offset from top edge to area you want to scan */
image.crArea.cx = width; /* always relative to 300 dpi */
image.crArea.cy = height;
image.wDataType = scanmode;
#ifdef ALL_MODES
switch( s->val[OPT_EXT_MODE].w ) {
case 1: image.dwFlag |= _SCANDEF_Transparency; break;
case 2: image.dwFlag |= _SCANDEF_Negative; break;
default: break;
}
#endif
#if 0
if( s->val[OPT_PREVIEW].w )
image.dwFlag |= _SCANDEF_PREVIEW;
#endif
/* set adjustments for brightness and contrast */
dev->DataInf.siBrightness = s->val[OPT_BRIGHTNESS].w;
dev->DataInf.siContrast = s->val[OPT_CONTRAST].w;
DBG( _DBG_SANE_INIT, "brightness %i, contrast %i\n",
dev->DataInf.siBrightness, dev->DataInf.siContrast );
result = u12image_SetupScanSettings( dev, &image );
if( SANE_STATUS_GOOD != result ) {
DBG( _DBG_ERROR, "u12image_SetupScanSettings() failed(%d)\n", result );
u12if_close( dev );
return SANE_STATUS_IO_ERROR;
}
s->params.pixels_per_line = dev->DataInf.dwAppPixelsPerLine;
s->params.bytes_per_line = dev->DataInf.dwAppBytesPerLine;
s->params.lines = dev->DataInf.dwAppLinesPerArea;
DBG( _DBG_INFO, "* PixelPerLine = %u\n", s->params.pixels_per_line );
DBG( _DBG_INFO, "* BytesPerLine = %u\n", s->params.bytes_per_line );
DBG( _DBG_INFO, "* Lines = %u\n", s->params.lines );
/* reset our timer...*/
tsecs = 0;
s->buf = realloc( s->buf, (s->params.lines) * s->params.bytes_per_line );
if( NULL == s->buf ) {
DBG( _DBG_ERROR, "realloc failed\n" );
u12if_close( dev );
return SANE_STATUS_NO_MEM;
}
result = u12if_startScan( dev );
if( SANE_STATUS_GOOD != result ) {
DBG( _DBG_ERROR, "u12if_startScan() failed(%d)\n", result );
u12if_close( dev );
return SANE_STATUS_IO_ERROR;
}
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;
u12if_close( dev );
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 );
cancelRead = SANE_FALSE;
if( s->reader_pid < 0 ) {
DBG( _DBG_ERROR, "ERROR: could not start reader task\n" );
s->scanning = SANE_FALSE;
u12if_close( dev );
return SANE_STATUS_IO_ERROR;
}
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 )
{
U12_Scanner *s = (U12_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 already had 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 drvClosePipes(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 ) {
drvClosePipes(s);
return s->exit_code;
}
s->reader_pid = -1;
return drvClosePipes(s);
}
return SANE_STATUS_GOOD;
}
/** cancel the scanning process
*/
void sane_cancel( SANE_Handle handle )
{
U12_Scanner *s = (U12_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 )
{
U12_Scanner *s = (U12_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 )
{
U12_Scanner *s = (U12_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 U12.C ................................................................*/
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