mirror
/
sane-project-backends
kopia lustrzana https://gitlab.com/sane-project/backends
1
0
Forkuj 0
Kod Zgłoszenia Projekty Wydania Wiki Aktywność
sane-project-backends/backend/plustek.c

1630 wiersze
44 KiB
C
Czysty Wina Historia

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

/*.............................................................................
* Project : SANE library for Plustek flatbed scanners.
*.............................................................................
* File: plustek.c - the SANE backend for the plustek driver
*.............................................................................
*
* based on Kazuhiro Sasayama previous
* Work on plustek.[ch] file from the SANE package.
* original code taken from sane-0.71
* Copyright (C) 1997 Hypercore Software Design, Ltd.
* also based on the work done by Rick Bronson
* Copyright (C) 2000 Gerhard Jaeger <g.jaeger@earthling.net>
*.............................................................................
* History:
* 0.30 - initial version
* 0.31 - no changes
* 0.32 - no changes
* 0.33 - no changes
* 0.34 - moved some definitions and typedefs to plustek.h
* 0.35 - removed Y-correction for 12000P model
* getting Y-size of scan area from driver
* 0.36 - disabled Dropout, as this does currently not work
* enabled Halftone selection only for Halftone-mode
* made the cancel button work by using a child process during read
* added version code to driver interface
* cleaned up the code
* fixed sane compatibility problems
* added multiple device support
* 12bit color-depth are now available for scanimage
* 0.37 - removed X/Y autocorrection, now correcting the stuff
* before scanning
* applied Michaels' patch to solve the sane_get_parameter problem
* getting X-size of scan area from driver
* applied Michaels´ patch for OPT_RESOLUTION (SANE_INFO_INEXACT stuff)
*
*.............................................................................
*
* 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.
*/
#ifdef _AIX
# include <lalloca.h> /* MUST come first for AIX! */
#endif
#include "sane/config.h"
#include <lalloca.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include "sane/sane.h"
#include "sane/sanei.h"
#include "sane/saneopts.h"
#define BACKEND_NAME plustek
#include "sane/sanei_backend.h"
#include "sane/sanei_config.h"
#include "plustek.h"
#include "plustek-share.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_READ 15
/*********************** other definitions ***********************************/
#define _MODEL_STR_LEN 255
/************************** global vars **************************************/
static int num_devices;
static Plustek_Device *first_dev;
static Plustek_Scanner *first_handle;
static unsigned long tsecs = 0;
static ModeParam mode_params[] =
{
{0, 1, COLOR_BW},
{0, 1, COLOR_HALFTONE},
{0, 8, COLOR_256GRAY},
{1, 8, COLOR_TRUE24},
{1, 16, COLOR_TRUE32},
{1, 16, COLOR_TRUE36},
};
static ModeParam mode_9636_params[] =
{
{0, 1, COLOR_BW},
{0, 1, COLOR_HALFTONE},
{0, 8, COLOR_256GRAY},
{1, 8, COLOR_TRUE24},
{1, 16, COLOR_TRUE48},
};
static const SANE_String_Const mode_list[] =
{
"Binary",
"Halftone",
"Gray",
"Color",
/* "Color30", */
NULL
};
static const SANE_String_Const mode_9636_list[] =
{
"Binary",
"Halftone",
"Gray",
"Color",
"Color36",
NULL
};
static const SANE_String_Const ext_mode_list[] =
{
"Normal",
"Transparency",
"Negative",
NULL
};
static const SANE_String_Const halftone_list[] =
{
"Dithermap 1",
"Dithermap 2",
"Randomize",
NULL
};
static const SANE_String_Const dropout_list[] =
{
"None",
"Red",
"Green",
"Blue",
NULL
};
static const SANE_Range percentage_range =
{
-100 << SANE_FIXED_SCALE_SHIFT, /* minimum */
100 << SANE_FIXED_SCALE_SHIFT, /* maximum */
1 << SANE_FIXED_SCALE_SHIFT /* quantization */
};
/*
* lens info
*/
static LensInfo lens = {{0,0,0,0,},{0,0,0,0,},{0,0,0,0,},{0,0,0,0,},0,0};
/*
* see plustek-share.h
*/
MODELSTR;
/* authorization stuff */
static SANE_Auth_Callback auth = NULL;
/*.............................................................................
* open the driver
*/
static int drvopen( const char *dev_name )
{
int result;
int handle;
unsigned short version = _PTDRV_IOCTL_VERSION;
DBG( _DBG_INFO, "drvopen()\n" );
if ((handle = open(dev_name, O_RDONLY)) < 0) {
DBG(_DBG_ERROR, "open: can't open %s as a device\n", dev_name);
return handle;
}
result = ioctl(handle, _PTDRV_OPEN_DEVICE, &version );
if( result < 0 ) {
close( handle );
DBG( _DBG_ERROR,"ioctl PT_DRV_OPEN_DEVICE failed(%d)\n", result );
if( -9019 == result )
DBG( _DBG_ERROR,"Version problem, please recompile driver!\n" );
return result;
}
tsecs = 0;
return handle;
}
/*.............................................................................
* close the driver
*/
static SANE_Status drvclose( int handle )
{
int int_cnt;
if( handle >= 0 ) {
DBG( _DBG_INFO, "drvclose()\n" );
if( 0 != tsecs ) {
DBG( _DBG_INFO, "TIME END 1: %lus\n", time(NULL)-tsecs);
}
/*
* don't check the return values, simply do it and close the driver
*/
int_cnt = 0;
ioctl( handle, _PTDRV_STOP_SCAN, &int_cnt );
ioctl( handle, _PTDRV_CLOSE_DEVICE, 0);
close( handle );
}
return SANE_STATUS_GOOD;
}
/*.............................................................................
* according to the mode and source we return the corresponding mode list
*/
static pModeParam getModeList( Plustek_Scanner *scanner )
{
pModeParam mp;
if((MODEL_OP_9636T == scanner->hw->model) ||
(MODEL_OP_9636P == scanner->hw->model) ||
(MODEL_OP_9636PP == scanner->hw->model)) {
mp = mode_9636_params;
} else {
mp = mode_params;
}
/*
* the transparency/negative mode supports only GRAY/COLOR/COLOR32/COLOR48
*/
if( 0 != scanner->val[OPT_EXT_MODE].w )
mp = &mp[_TPAModeSupportMin];
return mp;
}
/*.............................................................................
*
*/
static SANE_Status close_pipe( Plustek_Scanner *scanner )
{
if( scanner->pipe >= 0 ) {
DBG( _DBG_PROC, "close_pipe\n" );
close( scanner->pipe );
scanner->pipe = -1;
}
return SANE_STATUS_EOF;
}
/*.............................................................................
*
*/
static void sig_chldhandler( int signo )
{
DBG( _DBG_PROC, "Child is down (signal=%d)\n", signo );
}
/*.............................................................................
* signal handler to kill the child process
*/
static RETSIGTYPE reader_process_sigterm_handler( int signal )
{
DBG( _DBG_PROC, "reader_process: terminated by signal %d\n", signal );
_exit( SANE_STATUS_GOOD );
}
/*.............................................................................
* executed as a child process
* read the data from the driver and send the to the parent process
*/
static int reader_process( Plustek_Scanner *scanner, int pipe_fd )
{
unsigned long status;
unsigned long data_length;
struct SIGACTION act;
DBG( _DBG_PROC, "reader_process started\n" );
/* install the signal handler */
memset (&act, 0, sizeof(act));
act.sa_handler = reader_process_sigterm_handler;
sigaction (SIGTERM, &act, 0);
data_length = scanner->params.lines * scanner->params.bytes_per_line;
DBG( _DBG_PROC, "reader_process:"
"starting to READ data (%lu bytes)\n", data_length );
DBG( _DBG_PROC, "buf = 0x%08lx\n", (unsigned long)scanner->buf );
if( NULL == scanner->buf ) {
DBG( _DBG_FATAL, "NULL Pointer !!!!\n" );
return SANE_STATUS_IO_ERROR;
}
/* here we read all data from the driver... */
status = (unsigned long)read( scanner->hw->fd, scanner->buf, data_length );
/* on error, there's no need to clean up, as this is done by the parent */
if((int)status < 0 ) {
DBG( _DBG_ERROR, "read failed, error %i\n", errno );
if( errno == EBUSY )
return SANE_STATUS_DEVICE_BUSY;
return SANE_STATUS_IO_ERROR;
}
/* send to parent */
DBG( _DBG_PROC, "sending %lu bytes to parent\n", status );
write( pipe_fd, scanner->buf, status );
pipe_fd = -1;
DBG( _DBG_PROC, "reader_process: finished reading data\n" );
return SANE_STATUS_GOOD;
}
/*.............................................................................
* stop the current scan process
*/
static SANE_Status do_cancel( Plustek_Scanner *scanner, SANE_Bool closepipe )
{
pid_t res;
int int_cnt;
DBG( _DBG_PROC,"do_cancel\n" );
scanner->scanning = SANE_FALSE;
if (scanner->reader_pid > 0) {
DBG( _DBG_PROC,"killing reader_process\n" );
/* tell the driver to stop scanning */
if( -1 != scanner->hw->fd ) {
int_cnt = 1;
ioctl(scanner->hw->fd, _PTDRV_STOP_SCAN, &int_cnt );
}
/* kill our child process and wait until done */
kill( scanner->reader_pid, SIGTERM );
res = waitpid( scanner->reader_pid, 0, 0 );
if( res != scanner->reader_pid )
DBG( _DBG_PROC,"waitpid() failed !\n");
scanner->reader_pid = 0;
DBG( _DBG_PROC,"reader_process killed\n");
}
if( SANE_TRUE == closepipe ) {
close_pipe( scanner );
}
drvclose( scanner->hw->fd );
if( tsecs != 0 ) {
DBG( _DBG_INFO, "TIME END 2: %lus\n", time(NULL)-tsecs);
tsecs = 0;
}
scanner->hw->fd = -1;
return SANE_STATUS_CANCELLED;
}
/*.............................................................................
*
*/
static SANE_Status limitResolution( Plustek_Device *dev )
{
dev->dpi_range.min = _DEF_DPI;
/*
* CHANGE: limit resolution to max. physical available one
* Note: the limit for the Asic 96001/3 models is limited to the
* X-Resolution
*/
if( _ASIC_IS_98001 == dev->asic ) {
dev->dpi_range.max = lens.rDpiY.wPhyMax;
} else {
dev->dpi_range.max = lens.rDpiX.wPhyMax;
}
dev->dpi_range.quant = 0;
dev->x_range.min = 0;
dev->x_range.max = SANE_FIX(dev->max_x);
dev->x_range.quant = 0;
dev->y_range.min = 0;
dev->y_range.max = SANE_FIX(dev->max_y);
dev->y_range.quant = 0;
return SANE_STATUS_GOOD;
}
/*.............................................................................
* initialize the options for the backend according to the device we have
*/
static SANE_Status init_options( Plustek_Scanner *s )
{
int i;
memset( s->opt, 0, sizeof(s->opt));
for (i = 0; i < NUM_OPTIONS; ++i) {
s->opt[i].size = sizeof (SANE_Word);
s->opt[i].cap = SANE_CAP_SOFT_SELECT | SANE_CAP_SOFT_DETECT;
}
s->opt[OPT_NUM_OPTS].name = SANE_NAME_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].title = SANE_TITLE_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].desc = SANE_DESC_NUM_OPTIONS;
s->opt[OPT_NUM_OPTS].type = SANE_TYPE_INT;
s->opt[OPT_NUM_OPTS].unit = SANE_UNIT_NONE;
s->opt[OPT_NUM_OPTS].size = sizeof(SANE_Word);
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 = "Scan Mode group";
s->opt[OPT_MODE_GROUP].title = "Scan Mode";
s->opt[OPT_MODE_GROUP].desc = "";
s->opt[OPT_MODE_GROUP].type = SANE_TYPE_GROUP;
s->opt[OPT_MODE_GROUP].cap = 0;
/* scan mode */
s->opt[OPT_MODE].name = SANE_NAME_SCAN_MODE;
s->opt[OPT_MODE].title = SANE_TITLE_SCAN_MODE;
s->opt[OPT_MODE].desc = SANE_DESC_SCAN_MODE;
s->opt[OPT_MODE].type = SANE_TYPE_STRING;
s->opt[OPT_MODE].size = 32;
s->opt[OPT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
if((MODEL_OP_9636T == s->hw->model) ||
(MODEL_OP_9636P == s->hw->model) ||
(MODEL_OP_9636PP == s->hw->model)) {
s->opt[OPT_MODE].constraint.string_list = mode_9636_list;
} else {
s->opt[OPT_MODE].constraint.string_list = mode_list;
}
s->val[OPT_MODE].w = 3; /* Color */
/* scan source */
s->opt[OPT_EXT_MODE].name = SANE_NAME_SCAN_SOURCE;
s->opt[OPT_EXT_MODE].title = SANE_TITLE_SCAN_SOURCE;
s->opt[OPT_EXT_MODE].desc = PLUSTEK_DESC_SCAN_SOURCE;
s->opt[OPT_EXT_MODE].type = SANE_TYPE_STRING;
s->opt[OPT_EXT_MODE].size = 32;
s->opt[OPT_EXT_MODE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
s->opt[OPT_EXT_MODE].constraint.string_list = ext_mode_list;
s->val[OPT_EXT_MODE].w = 0; /* Normal */
/* halftone */
s->opt[OPT_HALFTONE].name = SANE_NAME_HALFTONE;
s->opt[OPT_HALFTONE].title = SANE_TITLE_HALFTONE;
s->opt[OPT_HALFTONE].desc = "Selects the halftone.";
s->opt[OPT_HALFTONE].type = SANE_TYPE_STRING;
s->opt[OPT_HALFTONE].size = 32;
s->opt[OPT_HALFTONE].constraint_type = SANE_CONSTRAINT_STRING_LIST;
s->opt[OPT_HALFTONE].constraint.string_list = halftone_list;
s->val[OPT_HALFTONE].w = 0; /* Standard dithermap */
s->opt[OPT_HALFTONE].cap |= SANE_CAP_INACTIVE;
/* dropout */
s->opt[OPT_DROPOUT].name = "dropout";
s->opt[OPT_DROPOUT].title = "Dropout";
s->opt[OPT_DROPOUT].desc = "Selects the dropout.";
s->opt[OPT_DROPOUT].type = SANE_TYPE_STRING;
s->opt[OPT_DROPOUT].size = 32;
s->opt[OPT_DROPOUT].cap |= SANE_CAP_ADVANCED;
s->opt[OPT_DROPOUT].constraint_type = SANE_CONSTRAINT_STRING_LIST;
s->opt[OPT_DROPOUT].constraint.string_list = dropout_list;
s->val[OPT_DROPOUT].w = 0; /* None */
s->opt[OPT_DROPOUT].cap |= SANE_CAP_INACTIVE;
/* brightness */
s->opt[OPT_BRIGHTNESS].name = SANE_NAME_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].title = SANE_TITLE_BRIGHTNESS;
s->opt[OPT_BRIGHTNESS].desc = "Selects the 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;
/* "Geometry" group: */
s->opt[OPT_GEOMETRY_GROUP].title = "Geometry";
s->opt[OPT_GEOMETRY_GROUP].name = "Geometry Group";
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);
/* CHANGE: disable some settings for the 9636T and the other models */
if(MODEL_OP_9636T != s->hw->model) {
s->opt[OPT_EXT_MODE].cap |= SANE_CAP_INACTIVE;
}
return SANE_STATUS_GOOD;
}
/*.............................................................................
*
*/
static SANE_Status attach( const char *dev_name, Plustek_Device **devp )
{
char *str;
int cntr;
int result;
int handle;
SANE_Status status;
Plustek_Device *dev;
ScannerCaps scaps;
DBG(_DBG_SANE_INIT, "attach (%s, %p)\n", dev_name, (void *)devp);
/* already attached ?*/
for( dev = first_dev; dev; dev = dev->next )
if (strcmp (dev->sane.name, dev_name) == 0) {
if (devp)
*devp = dev;
return SANE_STATUS_GOOD;
}
/*
* go ahead and open the scanner device
*/
handle = drvopen( dev_name );
if( handle < 0 ) {
return SANE_STATUS_IO_ERROR;
}
result = ioctl( handle, _PTDRV_GET_CAPABILITIES, &scaps);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_GET_CAPABILITIES failed(%d)\n", result);
close(handle);
return SANE_STATUS_IO_ERROR;
}
result = ioctl( handle, _PTDRV_GET_LENSINFO, &lens);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_GET_LENSINFO failed(%d)\n", result );
close(handle);
return SANE_STATUS_IO_ERROR;
}
/* did we fail on connection? */
if (scaps.wIOBase == _NO_BASE ) {
DBG( _DBG_ERROR, "failed to find Plustek scanner\n" );
close(handle);
return SANE_STATUS_INVAL;
}
/* allocate some memory for the device */
dev = malloc( sizeof (*dev));
if (!dev)
return SANE_STATUS_NO_MEM;
memset (dev, 0, sizeof (*dev));
dev->fd = -1;
dev->sane.name = strdup (dev_name);
dev->sane.vendor = "Plustek";
dev->sane.type = "flatbed scanner";
/* save the info we got from the driver */
dev->model = scaps.Model;
dev->asic = scaps.AsicID;
dev->max_x = scaps.wMaxExtentX*MM_PER_INCH/_MEASURE_BASE;
dev->max_y = scaps.wMaxExtentY*MM_PER_INCH/_MEASURE_BASE;
dev->res_list = (SANE_Int *) calloc(((lens.rDpiX.wMax -_DEF_DPI)/25 + 1),
sizeof (SANE_Int)); /* one more to avoid a buffer overflow */
if (NULL == dev->res_list) {
DBG( _DBG_ERROR, "alloc fail, resolution problem\n" );
close(handle);
return SANE_STATUS_INVAL;
}
dev->res_list_size = 0;
for (cntr = _DEF_DPI; cntr <= lens.rDpiX.wMax; cntr += 25) {
dev->res_list_size++;
dev->res_list[dev->res_list_size - 1] = (SANE_Int) cntr;
}
status = limitResolution( dev );
drvclose( handle );
str = malloc(_MODEL_STR_LEN);
if( NULL == str ) {
DBG(_DBG_ERROR,"attach: out of memory\n");
return SANE_STATUS_NO_MEM;
}
str[(_MODEL_STR_LEN-1)] = '\0';
str[0] = '\0';
/* error, give asic # */
if (scaps.Model > sizeof (ModelStr) / sizeof (*ModelStr)) {
sprintf (str, "ASIC ID = 0x%x", scaps.AsicID);
} else {
sprintf (str, ModelStr[scaps.Model]); /* lookup model string */
}
dev->sane.model = str;
dev->fd = handle;
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;
}
/*.............................................................................
*
*/
static SANE_Status attach_one( const char *dev )
{
DBG( _DBG_SANE_INIT, "attach_one: >%s<\n", dev );
return attach(dev, 0);
}
/*.............................................................................
* intialize the backend
*/
SANE_Status sane_init( SANE_Int *version_code, SANE_Auth_Callback authorize )
{
char dev_name[PATH_MAX] = "/dev/pt_drv";
size_t len;
FILE *fp;
DBG_INIT();
#if defined PACKAGE && defined VERSION
DBG( _DBG_SANE_INIT, "sane_init: " PACKAGE " " VERSION "\n");
#endif
auth = authorize;
first_dev = NULL;
first_handle = NULL;
num_devices = 0;
if( version_code != NULL )
*version_code = SANE_VERSION_CODE(V_MAJOR, V_MINOR, 0);
fp = sanei_config_open( PLUSTEK_CONFIG_FILE );
/* default to /dev/pt_drv instead of insisting on config file */
if( NULL == fp ) {
return attach("/dev/pt_drv", 0);
}
while (sanei_config_read( dev_name, sizeof(dev_name), fp)) {
DBG( _DBG_SANE_INIT, "sane_init, >%s<\n", dev_name);
if( dev_name[0] == '#') /* ignore line comments */
continue;
len = strlen(dev_name);
if( dev_name[len - 1] == '\n' )
dev_name[--len] = '\0';
if( !len)
continue; /* ignore empty lines */
DBG( _DBG_SANE_INIT, "sane_init, >%s<\n", dev_name);
sanei_config_attach_matching_devices( dev_name, attach_one );
}
fclose (fp);
return SANE_STATUS_GOOD;
}
/*.............................................................................
* cleanup the backend...
*/
void sane_exit( void )
{
Plustek_Device *dev, *next;
DBG( _DBG_SANE_INIT, "sane_exit\n" );
for( dev = first_dev; dev; dev = next ) {
next = dev->next;
if( dev->sane.name )
free ((void *) dev->sane.name);
if( dev->sane.model )
free ((void *) dev->sane.model);
free (dev);
}
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 )
{
static const SANE_Device **devlist = 0;
Plustek_Device *dev;
int i;
DBG(_DBG_SANE_INIT, "sane_get_devices (%p, %ld)\n", (void *) device_list,
(long) local_only);
/* already called, so cleanup */
if( devlist )
free( devlist );
devlist = malloc((num_devices + 1) * sizeof (devlist[0]));
if ( NULL == devlist )
return SANE_STATUS_NO_MEM;
i = 0;
for (dev = first_dev; i < num_devices; dev = dev->next)
devlist[i++] = &dev->sane;
devlist[i++] = 0;
*device_list = devlist;
return SANE_STATUS_GOOD;
}
/*.............................................................................
* open the sane device
*/
SANE_Status sane_open( SANE_String_Const devicename, SANE_Handle * handle )
{
SANE_Status status;
Plustek_Device *dev;
Plustek_Scanner *s;
DBG( _DBG_SANE_INIT, "sane_open\n" );
if (devicename[0]) {
for (dev = first_dev; dev; dev = dev->next)
if (strcmp (dev->sane.name, devicename) == 0)
break;
if (!dev) {
status = attach (devicename, &dev);
if (status != SANE_STATUS_GOOD)
return status;
}
} else {
/* empty devicename -> use first device */
dev = first_dev;
}
if (!dev)
return SANE_STATUS_INVAL;
s = malloc (sizeof (*s));
if (!s)
return SANE_STATUS_NO_MEM;
memset(s, 0, sizeof (*s));
s->pipe = -1;
s->hw = dev;
s->scanning = SANE_FALSE;
init_options(s);
/* insert newly opened handle into list of open handles: */
s->next = first_handle;
first_handle = s;
*handle = s;
return SANE_STATUS_GOOD;
}
/*.............................................................................
*
*/
void sane_close (SANE_Handle handle)
{
Plustek_Scanner *prev, *s;
DBG( _DBG_SANE_INIT, "sane_close\n" );
/* remove handle from list of open handles: */
prev = 0;
for( s = first_handle; s; s = s->next ) {
if( s == handle )
break;
prev = s;
}
if (!s) {
DBG( _DBG_ERROR, "close: invalid handle %p\n", handle);
return;
}
close_pipe( s );
if( NULL != s->buf )
free(s->buf);
drvclose( s->hw->fd );
s->hw->fd = -1;
if (prev)
prev->next = s->next;
else
first_handle = s->next;
free(s);
}
/*.............................................................................
*
*/
const SANE_Option_Descriptor *
sane_get_option_descriptor (SANE_Handle handle, SANE_Int option)
{
Plustek_Scanner *s = (Plustek_Scanner *) handle;
if (option < 0 || option >= NUM_OPTIONS)
return NULL;
return &(s->opt[option]);
}
/*.............................................................................
*
*/
static const SANE_String_Const *
search_string_list (const SANE_String_Const * list, SANE_String value)
{
while (*list != NULL && strcmp (value, *list) != 0)
++list;
if (*list == NULL)
return NULL;
return list;
}
/*.............................................................................
* return or set the parameter values, also do some checks
*/
SANE_Status sane_control_option( SANE_Handle handle, SANE_Int option,
SANE_Action action, void *value,
SANE_Int * info)
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
SANE_Status status;
const SANE_String_Const *optval;
if ( s->scanning ) {
return SANE_STATUS_DEVICE_BUSY;
}
if (option < 0 || option >= NUM_OPTIONS)
return SANE_STATUS_INVAL;
if (info != NULL)
*info = 0;
switch (action) {
case SANE_ACTION_GET_VALUE:
switch (option) {
case OPT_NUM_OPTS:
case OPT_RESOLUTION:
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
*(SANE_Word *)value = s->val[option].w;
break;
case OPT_CONTRAST:
case OPT_BRIGHTNESS:
*(SANE_Word *)value =
(s->val[option].w << SANE_FIXED_SCALE_SHIFT);
break;
case OPT_MODE:
case OPT_EXT_MODE:
case OPT_HALFTONE:
case OPT_DROPOUT:
strcpy ((char *) value,
s->opt[option].constraint.string_list[s->val[option].w]);
break;
default:
return SANE_STATUS_INVAL;
}
break;
case SANE_ACTION_SET_VALUE:
status = sanei_constrain_value( s->opt + option, value, info );
if (status != SANE_STATUS_GOOD) {
return status;
}
optval = NULL;
if (s->opt[option].constraint_type == SANE_CONSTRAINT_STRING_LIST) {
optval = search_string_list (s->opt[option].constraint.string_list,
(char *) value);
if (optval == NULL)
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 (info != NULL) {
if( v != best)
*info |= SANE_INFO_INEXACT;
*info |= SANE_INFO_RELOAD_PARAMS;
}
break;
}
case OPT_TL_X:
case OPT_TL_Y:
case OPT_BR_X:
case OPT_BR_Y:
s->val[option].w = *(SANE_Word *)value;
if (info != NULL)
*info |= SANE_INFO_RELOAD_PARAMS;
break;
case OPT_CONTRAST:
case OPT_BRIGHTNESS:
s->val[option].w =
((*(SANE_Word *)value) >> SANE_FIXED_SCALE_SHIFT);
break;
case OPT_MODE:
if(mode_params[optval - mode_list].scanmode != COLOR_HALFTONE){
s->opt[OPT_HALFTONE].cap |= SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
} else {
s->opt[OPT_HALFTONE].cap &= ~SANE_CAP_INACTIVE;
s->opt[OPT_CONTRAST].cap |= SANE_CAP_INACTIVE;
}
#if 0
if (mode_params[optval - mode_list].color) {
s->opt[OPT_DROPOUT].cap |= SANE_CAP_INACTIVE;
} else {
s->opt[OPT_DROPOUT].cap &= ~SANE_CAP_INACTIVE;
}
#endif
if (info != NULL)
*info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
/* fall through */
case OPT_HALFTONE:
case OPT_DROPOUT:
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);
if((MODEL_OP_9636T == s->hw->model) ||
(MODEL_OP_9636P == s->hw->model) ||
(MODEL_OP_9636PP == s->hw->model)) {
s->opt[OPT_MODE].constraint.string_list = mode_9636_list;
} else {
s->opt[OPT_MODE].constraint.string_list = mode_list;
}
s->val[OPT_MODE].w = 3; /* _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);
}
if( MODEL_OP_9636T == s->hw->model ) {
s->opt[OPT_MODE].constraint.string_list =
&mode_9636_list[_TPAModeSupportMin];
} else {
s->opt[OPT_MODE].constraint.string_list =
&mode_list[_TPAModeSupportMin];
}
s->val[OPT_MODE].w = 1; /* _COLOR_TRUE24 */
}
s->opt[OPT_HALFTONE].cap |= SANE_CAP_INACTIVE;
/* s->opt[OPT_DROPOUT].cap |= SANE_CAP_INACTIVE;
*/
s->opt[OPT_CONTRAST].cap &= ~SANE_CAP_INACTIVE;
if (info != NULL)
*info |= SANE_INFO_RELOAD_OPTIONS | SANE_INFO_RELOAD_PARAMS;
break;
default:
return SANE_STATUS_INVAL;
}
break;
default:
return SANE_STATUS_INVAL;
}
return SANE_STATUS_GOOD;
}
/*.............................................................................
* return the current parameter settings
*/
SANE_Status sane_get_parameters (SANE_Handle handle, SANE_Parameters * params)
{
int ndpi;
pModeParam mp;
Plustek_Scanner *s = (Plustek_Scanner *)handle;
/* if we're calling from within, calc best guess
* do the same, if sane_get_parameters() is called
* by a frontend before sane_start() is called
*/
if ((NULL == params) || (s->scanning != SANE_TRUE)) {
mp = getModeList( s );
memset( &s->params, 0, sizeof (SANE_Parameters));
ndpi = s->val[OPT_RESOLUTION].w;
s->params.pixels_per_line = SANE_UNFIX(s->val[OPT_BR_X].w -
s->val[OPT_TL_X].w) / MM_PER_INCH * ndpi;
s->params.lines = SANE_UNFIX( s->val[OPT_BR_Y].w -
s->val[OPT_TL_Y].w) / MM_PER_INCH * ndpi;
/* pixels_per_line seems to be 8 * n. */
/* s->params.pixels_per_line = s->params.pixels_per_line & ~7; debug only */
s->params.last_frame = SANE_TRUE;
s->params.depth = mp[s->val[OPT_MODE].w].depth;
if (mp[s->val[OPT_MODE].w].color) {
s->params.format = SANE_FRAME_RGB;
s->params.bytes_per_line = 3 * s->params.pixels_per_line;
} else {
s->params.format = SANE_FRAME_GRAY;
if (s->params.depth == 1)
s->params.bytes_per_line = (s->params.pixels_per_line + 7) / 8;
else
s->params.bytes_per_line = s->params.pixels_per_line *
s->params.depth / 8;
}
/* if sane_get_parameters() was called before sane_start() */
/* pass new values to the caller */
if ((NULL != params) && (s->scanning != SANE_TRUE))
*params = s->params;
} else
*params = s->params;
return SANE_STATUS_GOOD;
}
/*.............................................................................
* initiate the scan process
*/
SANE_Status sane_start( SANE_Handle handle )
{
Plustek_Scanner *s = (Plustek_Scanner *) handle;
pModeParam mp;
int result;
int ndpi;
int left, top;
int width, height;
int scanmode;
int fds[2];
ScannerCaps scaps;
StartScan start;
CmdBlk cb;
CropInfo crop;
SANE_Status status;
SANE_Word tmp;
DBG( _DBG_SANE_INIT, "sane_start\n" );
if( s->scanning ) {
return SANE_STATUS_DEVICE_BUSY;
}
status = sane_get_parameters (handle, NULL);
if (status != SANE_STATUS_GOOD) {
DBG( _DBG_ERROR, "sane_get_parameters failed\n" );
return status;
}
/*
* open the driver and get some information about the scanner
*/
s->hw->fd = drvopen ( s->hw->sane.name );
if( s->hw->fd < 0 ) {
DBG( _DBG_ERROR,"sane_start: open failed: %d\n", errno );
if( errno == EBUSY )
return SANE_STATUS_DEVICE_BUSY;
return SANE_STATUS_IO_ERROR;
}
result = ioctl( s->hw->fd, _PTDRV_GET_CAPABILITIES, &scaps);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_GET_CAPABILITIES failed(%d)\n", result);
close( s->hw->fd );
return SANE_STATUS_IO_ERROR;
}
result = ioctl( s->hw->fd, _PTDRV_GET_LENSINFO, &lens);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_GET_LENSINFO failed(%d)\n", result );
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
/* did we fail on connection? */
if (scaps.wIOBase == _NO_BASE ) {
DBG( _DBG_ERROR, "failed to find Plustek scanner\n" );
close(s->hw->fd);
return SANE_STATUS_INVAL;
}
/* All ready to go. Set image def and see what the scanner
* says for crop info.
*/
ndpi = s->val[OPT_RESOLUTION].w;
/* exchange the values as we can't deal with negative heights and so on...*/
tmp = s->val[OPT_TL_X].w;
if( tmp > s->val[OPT_BR_X].w ) {
DBG( _DBG_INFO, "exchanging BR-X - TL-X\n" );
s->val[OPT_TL_X].w = s->val[OPT_BR_X].w;
s->val[OPT_BR_X].w = tmp;
}
tmp = s->val[OPT_TL_Y].w;
if( tmp > s->val[OPT_BR_Y].w ) {
DBG( _DBG_INFO, "exchanging BR-Y - TL-Y\n" );
s->val[OPT_TL_Y].w = s->val[OPT_BR_Y].w;
s->val[OPT_BR_Y].w = tmp;
}
/* position and extent are always relative to 300 dpi */
left = (int)(SANE_UNFIX (s->val[OPT_TL_X].w)*(double)lens.rDpiX.wPhyMax/
(MM_PER_INCH*((double)lens.rDpiX.wPhyMax/300.0)));
top = (int)(SANE_UNFIX (s->val[OPT_TL_Y].w)*(double)lens.rDpiY.wPhyMax/
(MM_PER_INCH*((double)lens.rDpiY.wPhyMax/300.0)));
width = (int)(SANE_UNFIX (s->val[OPT_BR_X].w - s->val[OPT_TL_X].w) *
(double)lens.rDpiX.wPhyMax /
(MM_PER_INCH *((double)lens.rDpiX.wPhyMax/300.0)));
height = (int)(SANE_UNFIX (s->val[OPT_BR_Y].w - s->val[OPT_TL_Y].w) *
(double)lens.rDpiY.wPhyMax /
(MM_PER_INCH *((double)lens.rDpiY.wPhyMax/300.0)));
/*
* adjust mode list according to the model we use and the
* source we have
*/
mp = getModeList( s );
scanmode = mp[s->val[OPT_MODE].w].scanmode;
/* clear it out just in case */
memset (&cb, 0, sizeof (cb));
cb.ucmd.cInf.ImgDef.xyDpi.x = ndpi;
cb.ucmd.cInf.ImgDef.xyDpi.y = ndpi;
cb.ucmd.cInf.ImgDef.crArea.x = left; /* offset from left edge to area you want to scan */
cb.ucmd.cInf.ImgDef.crArea.y = top; /* offset from top edge to area you want to scan */
cb.ucmd.cInf.ImgDef.crArea.cx = width; /* always relative to 300 dpi */
cb.ucmd.cInf.ImgDef.crArea.cy = height;
cb.ucmd.cInf.ImgDef.wDataType = scanmode;
/*
* CHECK: what about the 10 bit mode
*/
if( COLOR_TRUE48 == scanmode )
cb.ucmd.cInf.ImgDef.wBits = OUTPUT_12Bits;
else if( COLOR_TRUE32 == scanmode )
cb.ucmd.cInf.ImgDef.wBits = OUTPUT_10Bits;
else
cb.ucmd.cInf.ImgDef.wBits = OUTPUT_8Bits;
cb.ucmd.cInf.ImgDef.dwFlag = SCANDEF_QualityScan;
switch( s->val[OPT_EXT_MODE].w ) {
case 1: cb.ucmd.cInf.ImgDef.dwFlag |= SCANDEF_Transparency; break;
case 2: cb.ucmd.cInf.ImgDef.dwFlag |= SCANDEF_Negative; break;
default: break;
}
cb.ucmd.cInf.ImgDef.wLens = scaps.wLens;
result = ioctl( s->hw->fd, _PTDRV_PUT_IMAGEINFO, &cb);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_PUT_IMAGEINFO failed(%d)\n", result );
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
result = ioctl(s->hw->fd, _PTDRV_GET_CROPINFO, &crop);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_GET_CROPINFO failed(%d)\n", result );
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
/* DataInf.dwAppPixelsPerLine = crop.dwPixelsPerLine; get calc'd pixels per line */
s->params.pixels_per_line = crop.dwPixelsPerLine;
s->params.bytes_per_line = crop.dwBytesPerLine; /* get calc'd bytes per line */
s->params.lines = crop.dwLinesPerArea; /* get calc'd lines per area */
/* build a SCANINFO block and get ready to scan it */
cb.ucmd.sInf.ImgDef.xyDpi.x = ndpi;
cb.ucmd.sInf.ImgDef.xyDpi.y = ndpi;
cb.ucmd.sInf.ImgDef.crArea.x = left;
cb.ucmd.sInf.ImgDef.crArea.y = top;
cb.ucmd.sInf.ImgDef.crArea.cx = width;
cb.ucmd.sInf.ImgDef.crArea.cy = height;
cb.ucmd.sInf.ImgDef.wDataType = scanmode;
if( COLOR_TRUE48 == scanmode )
cb.ucmd.sInf.ImgDef.wBits = OUTPUT_12Bits;
else if( COLOR_TRUE32 == scanmode )
cb.ucmd.sInf.ImgDef.wBits = OUTPUT_10Bits;
else
cb.ucmd.sInf.ImgDef.wBits = OUTPUT_8Bits;
cb.ucmd.sInf.ImgDef.dwFlag = (SCANDEF_BuildBwMap | SCANDEF_QualityScan);
/*
* cb.ucmd.sInf.ImgDef.dwFlag |= SCANDEF_Inverse;
*/
switch( s->val[OPT_EXT_MODE].w ) {
case 1: cb.ucmd.sInf.ImgDef.dwFlag |= SCANDEF_Transparency; break;
case 2: cb.ucmd.sInf.ImgDef.dwFlag |= SCANDEF_Negative; break;
default: break;
}
cb.ucmd.sInf.ImgDef.wLens = 1;
cb.ucmd.sInf.siBrightness = s->val[OPT_BRIGHTNESS].w;
cb.ucmd.sInf.siContrast = s->val[OPT_CONTRAST].w;
cb.ucmd.sInf.wDither = s->val[OPT_HALFTONE].w;
DBG( _DBG_SANE_INIT, "bright %i contrast %i\n", cb.ucmd.sInf.siBrightness,
cb.ucmd.sInf.siContrast);
result = ioctl(s->hw->fd, _PTDRV_SET_ENV, &cb.ucmd.sInf);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_SET_ENV failed(%d)\n", result );
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
result = ioctl(s->hw->fd, _PTDRV_START_SCAN, &start);
if( result < 0 ) {
DBG( _DBG_ERROR, "ioctl _PTDRV_START_SCAN failed(%d)\n", result );
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
DBG( _DBG_SANE_INIT, "dwflag = 0x%lx dwBytesPerLine = %ld, "
"dwLinesPerScan = %ld\n",
start.dwFlag, start.dwBytesPerLine, start.dwLinesPerScan);
s->buf = realloc( s->buf, (s->params.lines) * s->params.bytes_per_line );
if( NULL == s->buf ) {
DBG( _DBG_ERROR, "realloc failed\n" );
close(s->hw->fd);
return SANE_STATUS_NO_MEM;
}
s->scanning = SANE_TRUE;
tsecs = (unsigned long)time(NULL);
DBG( _DBG_INFO, "TIME START\n" );
/*
* everything prepared, so start the child process and a pipe to communicate
* pipe --> fds[0]=read-fd, fds[1]=write-fd
*/
if( pipe(fds) < 0 ) {
DBG( _DBG_ERROR, "ERROR: could not create pipe\n" );
s->scanning = SANE_FALSE;
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
/* create reader routine as new process */
s->bytes_read = 0;
s->reader_pid = fork();
if( s->reader_pid < 0 ) {
DBG( _DBG_ERROR, "ERROR: could not create child process\n" );
s->scanning = SANE_FALSE;
close(s->hw->fd);
return SANE_STATUS_IO_ERROR;
}
/* reader_pid = 0 ===> child process */
if ( 0 == s->reader_pid ) {
sigset_t ignore_set;
struct SIGACTION act;
DBG( _DBG_SANE_INIT, "reader process...\n" );
close(fds[0]);
sigfillset ( &ignore_set );
sigdelset ( &ignore_set, SIGTERM );
sigprocmask( SIG_SETMASK, &ignore_set, 0 );
memset ( &act, 0, sizeof (act));
sigaction( SIGTERM, &act, 0 );
status = reader_process( s, fds[1] );
DBG( _DBG_SANE_INIT, "reader process done, status = %i\n", status );
/* don't use exit() since that would run the atexit() handlers */
_exit( status );
}
signal( SIGCHLD, sig_chldhandler );
close(fds[1]);
s->pipe = fds[0];
DBG( _DBG_SANE_INIT, "sane_start done\n" );
return SANE_STATUS_GOOD;
}
/*.............................................................................
* function to read the data from our child process
*/
SANE_Status sane_read( SANE_Handle handle, SANE_Byte *data,
SANE_Int max_length, SANE_Int *length )
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
ssize_t nread;
*length = 0;
nread = read( s->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 (errno == EAGAIN) {
if( s->bytes_read ==
(unsigned long)(s->params.lines * s->params.bytes_per_line)) {
waitpid( s->reader_pid, 0, 0 );
s->reader_pid = -1;
drvclose( s->hw->fd );
s->hw->fd = -1;
return close_pipe(s);
}
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;
if (0 == nread) {
drvclose( s->hw->fd );
s->hw->fd = -1;
return close_pipe(s);
}
return SANE_STATUS_GOOD;
}
/*.............................................................................
* cancel the scanning process
*/
void sane_cancel (SANE_Handle handle)
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
DBG( _DBG_SANE_INIT, "sane_cancel\n" );
if( s->scanning ) {
do_cancel( s, SANE_FALSE );
}
}
/*.............................................................................
* set the pipe to blocking/non blocking mode
*/
SANE_Status sane_set_io_mode (SANE_Handle handle, SANE_Bool non_blocking)
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
DBG( _DBG_SANE_INIT, "sane_set_io_mode: non_blocking=%d\n",non_blocking );
if ( !s->scanning ) {
DBG( _DBG_ERROR, "ERROR: not scanning !\n" );
return SANE_STATUS_INVAL;
}
if (fcntl (s->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 )
{
Plustek_Scanner *s = (Plustek_Scanner *)handle;
DBG( _DBG_SANE_INIT, "sane_get_select_fd\n" );
if ( !s->scanning ) {
DBG( _DBG_ERROR, "ERROR: not scanning !\n" );
return SANE_STATUS_INVAL;
}
*fd = s->pipe;
DBG( _DBG_SANE_INIT, "sane_get_select_fd done\n" );
return SANE_STATUS_GOOD;
}
/* END PLUSTEK.C ............................................................*/
Reference in New Issue View Git Blame Kopiuj bezpośredni odnośnik