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authorJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2014-10-06 14:00:40 +0200
commit6e9c41a892ed0e0da326e0278b3221ce3f5713b8 (patch)
tree2e301d871bbeeb44aa57ff9cc070fcf3be484487 /backend/u12.c
Initial import of sane-backends version 1.0.24-1.2
Diffstat (limited to 'backend/u12.c')
-rw-r--r--backend/u12.c1869
1 files changed, 1869 insertions, 0 deletions
diff --git a/backend/u12.c b/backend/u12.c
new file mode 100644
index 0000000..8401a9f
--- /dev/null
+++ b/backend/u12.c
@@ -0,0 +1,1869 @@
+/** @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;
+ SANE_Pid res;
+
+ DBG( _DBG_PROC,"do_cancel\n" );
+
+ scanner->scanning = SANE_FALSE;
+
+ if( scanner->reader_pid != -1 ) {
+
+ 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 = -1;
+ 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(SANE_CURRENT_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 == -1 ) {
+ 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´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 ................................................................*/