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Diffstat (limited to 'backend/u12.c')
| -rw-r--r-- | backend/u12.c | 1869 |
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: canīt 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 ................................................................*/ |