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-rw-r--r--backend/plustek-usbcalfile.c845
1 files changed, 845 insertions, 0 deletions
diff --git a/backend/plustek-usbcalfile.c b/backend/plustek-usbcalfile.c
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+++ b/backend/plustek-usbcalfile.c
@@ -0,0 +1,845 @@
+/*.............................................................................
+ * Project : SANE library for Plustek flatbed scanners.
+ *.............................................................................
+ */
+
+/** @file plustek-usbcalfile.c
+ * @brief Functions for saving/restoring calibration settings
+ *
+ * Copyright (C) 2001-2007 Gerhard Jaeger <gerhard@gjaeger.de>
+ *
+ * History:
+ * - 0.46 - first version
+ * - 0.47 - no changes
+ * - 0.48 - no changes
+ * - 0.49 - a_bRegs is now part of the device structure
+ * - 0.50 - cleanup
+ * - 0.51 - added functions for saving, reading and restoring
+ * fine calibration data
+ * - 0.52 - no changes
+ * .
+ * <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>
+ */
+
+typedef struct {
+ u_long red_light_on;
+ u_long red_light_off;
+ u_long green_light_on;
+ u_long green_light_off;
+ u_long blue_light_on;
+ u_long blue_light_off;
+ u_long green_pwm_duty;
+
+} LightCtrl;
+
+typedef struct {
+ u_short version;
+
+ u_short red_gain;
+ u_short green_gain;
+ u_short blue_gain;
+
+ u_short red_offs;
+ u_short green_offs;
+ u_short blue_offs;
+
+ LightCtrl light;
+
+} CalData;
+
+/* our shading buffers */
+static u_short a_wWhiteShading[_SHADING_BUF] = {0};
+static u_short a_wDarkShading[_SHADING_BUF] = {0};
+
+/* the version the the calibration files */
+#define _PT_CF_VERSION 0x0002
+
+/** function to read a text file and returns the string which starts which
+ * 'id' string.
+ * no duplicate entries where detected, always the first occurance will be
+ * red.
+ * @param fp - file pointer of file to read
+ * @param id - what to search for
+ * @param res - where to store the result upon success
+ * @return SANE_TRUE on success, SANE_FALSE on any error
+ */
+static SANE_Bool
+usb_ReadSpecLine( FILE *fp, char *id, char* res )
+{
+ char tmp[1024];
+ char *ptr;
+
+ /* rewind file pointer */
+ if( 0 != fseek( fp, 0L, SEEK_SET)) {
+ DBG( _DBG_ERROR, "fseek: %s\n", strerror(errno));
+ return SANE_FALSE;
+ }
+
+ /* roam through the file and examine each line... */
+ while( !feof( fp )) {
+
+ memset( tmp, 0, sizeof(tmp));
+ if( NULL != fgets( tmp, 1024, fp )) {
+
+ if( 0 == strncmp( tmp, id, strlen(id))) {
+
+ ptr = &tmp[strlen(id)];
+ if( '\0' == *ptr )
+ break;
+
+ strcpy( res, ptr );
+ res[strlen(res)-1] = '\0';
+ return SANE_TRUE;
+ }
+ }
+ }
+ return SANE_FALSE;
+}
+
+/** function to read data from a file and excluding certain stuff like
+ * the version lines
+ * @param fp - file pointer of file to read
+ * @param except - what to exclude
+ * @return Pointer to the allocated memory for the data, NULL on any error.
+ */
+static char*
+usb_ReadOtherLines( FILE *fp, char *except )
+{
+ char tmp[1024];
+ char *ptr, *ptr_base;
+ int ignore;
+ int len;
+
+ if( 0 != fseek( fp, 0L, SEEK_END))
+ return NULL;
+
+ len = ftell(fp);
+
+ /* rewind file pointer */
+ if( 0 != fseek( fp, 0L, SEEK_SET))
+ return NULL;
+
+ if( len == 0 )
+ return NULL;
+
+ ptr = (char*)malloc(len);
+ if( NULL == ptr )
+ return NULL;
+
+ ptr_base = ptr;
+ *ptr = '\0';
+ ignore = 0;
+
+ /* roam through the file and examine each line... */
+ while( !feof( fp )) {
+
+ if( NULL != fgets( tmp, 1024, fp )) {
+
+ /* we ignore the version line... */
+ if( 0 == strncmp( tmp, "version=", 8 ))
+ continue;
+
+ if( !ignore ) {
+ if(0 != strncmp(tmp, except, strlen(except))) {
+
+ if( strlen( tmp ) > 0 ) {
+ strcpy( ptr, tmp );
+ ptr += strlen(tmp);
+ *ptr = '\0';
+ }
+ } else {
+ ignore = 1;
+ }
+ }
+
+ /* newline in tmp string resets ignore flag */
+ if( strrchr(tmp, '\n')) {
+ ignore = 0;
+ }
+ }
+ }
+ return ptr_base;
+}
+
+/**
+ */
+static SANE_Bool
+usb_ReadSamples( FILE *fp, char *which, u_long *dim, u_short *buffer )
+{
+ char *p, *next, *rb;
+ char tmp[1024+30];
+ int ignore, diml, c;
+ u_long val;
+
+ /* rewind file pointer */
+ if( 0 != fseek( fp, 0L, SEEK_SET))
+ return SANE_FALSE;
+
+ ignore = 0;
+ diml = 0;
+ c = 0;
+ rb = tmp;
+ *dim = 0;
+
+ /* roam through the file and examine each line... */
+ while( !feof( fp )) {
+
+ if( NULL != fgets( rb, 1024, fp )) {
+
+ /* we ignore the version line... */
+ if( 0 == strncmp( tmp, "version=", 8 ))
+ continue;
+
+ p = tmp;
+ if( !ignore && diml == 0) {
+ if(0 == strncmp(tmp, which, strlen(which))) {
+
+ /* get dimension */
+ diml = strtol(&tmp[strlen(which)], NULL, 10);
+ p = strchr( &tmp[strlen(which)], ':' );
+ p++;
+ } else {
+ ignore = 1;
+ }
+ }
+
+ /* parse the values... */
+ if( !ignore ) {
+
+ rb = tmp;
+ while( *p ) {
+ val = strtoul( p, &next, 10 );
+
+ /* check for error condition */
+ if( val == 0 ) {
+ if( p == next ) {
+ if( c+1 == diml ) {
+ *dim = diml;
+ return SANE_TRUE;
+ }
+ break;
+ }
+ }
+
+ buffer[c] = (u_short)val;
+
+ /* more values? */
+ if( *next == ',') {
+ p = next+1;
+ c++;
+ } else {
+ p = next;
+ }
+ /* reached the end? */
+ if( *next == '\0' ) {
+
+ /* we probably have only parsed a part of a value
+ * so we copy that back to the input buffer and
+ * parse it the next time...
+ */
+ if( c < diml ) {
+ sprintf( tmp, "%u", buffer[c] );
+ rb = &tmp[strlen(tmp)];
+ }
+ }
+ }
+ }
+
+ /* newline in tmp string resets ignore flag */
+ if( strrchr(tmp, '\n')) {
+ ignore = 0;
+ }
+ }
+ }
+ return SANE_FALSE;
+}
+
+/**
+ */
+static void
+usb_RestoreCalData( Plustek_Device *dev, CalData *cal )
+{
+ HWDef *hw = &dev->usbDev.HwSetting;
+ u_char *regs = dev->usbDev.a_bRegs;
+
+ regs[0x3b] = (u_char)cal->red_gain;
+ regs[0x3c] = (u_char)cal->green_gain;
+ regs[0x3d] = (u_char)cal->blue_gain;
+ regs[0x38] = (u_char)cal->red_offs;
+ regs[0x39] = (u_char)cal->green_offs;
+ regs[0x3a] = (u_char)cal->blue_offs;
+
+ regs[0x2a] = _HIBYTE((u_short)cal->light.green_pwm_duty);
+ regs[0x2b] = _LOBYTE((u_short)cal->light.green_pwm_duty);
+
+ regs[0x2c] = _HIBYTE((u_short)cal->light.red_light_on);
+ regs[0x2d] = _LOBYTE((u_short)cal->light.red_light_on);
+ regs[0x2e] = _HIBYTE((u_short)cal->light.red_light_off);
+ regs[0x2f] = _LOBYTE((u_short)cal->light.red_light_off);
+
+ regs[0x30] = _HIBYTE((u_short)cal->light.green_light_on);
+ regs[0x31] = _LOBYTE((u_short)cal->light.green_light_on);
+ regs[0x32] = _HIBYTE((u_short)cal->light.green_light_off);
+ regs[0x33] = _LOBYTE((u_short)cal->light.green_light_off);
+
+ regs[0x34] = _HIBYTE((u_short)cal->light.blue_light_on);
+ regs[0x35] = _LOBYTE((u_short)cal->light.blue_light_on);
+ regs[0x36] = _HIBYTE((u_short)cal->light.blue_light_off);
+ regs[0x37] = _LOBYTE((u_short)cal->light.blue_light_off);
+
+ hw->red_lamp_on = (u_short)cal->light.red_light_on;
+ hw->red_lamp_off = (u_short)cal->light.red_light_off;
+ hw->green_lamp_on = (u_short)cal->light.green_light_on;
+ hw->green_lamp_off = (u_short)cal->light.green_light_off;
+ hw->blue_lamp_on = (u_short)cal->light.blue_light_on;
+ hw->blue_lamp_off = (u_short)cal->light.blue_light_off;
+}
+
+/**
+ */
+static void
+usb_CreatePrefix( Plustek_Device *dev, char *pfx, SANE_Bool add_bitdepth )
+{
+ char bd[5];
+ ScanDef *scanning = &dev->scanning;
+ ScanParam *param = &scanning->sParam;
+
+ switch( scanning->sParam.bSource ) {
+
+ case SOURCE_Transparency: strcpy( pfx, "tpa-" ); break;
+ case SOURCE_Negative: strcpy( pfx, "neg-" ); break;
+ case SOURCE_ADF: strcpy( pfx, "adf-" ); break;
+ default: pfx[0] = '\0'; break;
+ }
+
+ sprintf( bd, "%u=", param->bBitDepth );
+ if( param->bDataType == SCANDATATYPE_Color )
+ strcat( pfx, "color" );
+ else
+ strcat( pfx, "gray" );
+
+ if( add_bitdepth )
+ strcat( pfx, bd );
+}
+
+/** function to read and set the calibration data from external file
+ */
+static SANE_Bool
+usb_ReadAndSetCalData( Plustek_Device *dev )
+{
+ char pfx[20];
+ char tmp[1024];
+ u_short version;
+ int res;
+ FILE *fp;
+ CalData cal;
+ SANE_Bool ret;
+
+ DBG( _DBG_INFO, "usb_ReadAndSetCalData()\n" );
+
+ if( usb_InCalibrationMode(dev)) {
+ DBG( _DBG_INFO, "- we are in calibration mode!\n" );
+ return SANE_FALSE;
+ }
+
+ if( NULL == dev->calFile ) {
+ DBG( _DBG_ERROR, "- No calibration filename set!\n" );
+ return SANE_FALSE;
+ }
+
+ sprintf( tmp, "%s-coarse.cal", dev->calFile );
+ DBG( _DBG_INFO, "- Reading coarse calibration data from file\n");
+ DBG( _DBG_INFO, " %s\n", tmp );
+
+ fp = fopen( tmp, "r" );
+ if( NULL == fp ) {
+ DBG( _DBG_ERROR, "File %s not found\n", tmp );
+ return SANE_FALSE;
+ }
+
+ /* check version */
+ if( !usb_ReadSpecLine( fp, "version=", tmp )) {
+ DBG( _DBG_ERROR, "Could not find version info!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ DBG( _DBG_INFO, "- Calibration file version: %s\n", tmp );
+ if( 1 != sscanf( tmp, "0x%04hx", &version )) {
+ DBG( _DBG_ERROR, "Could not decode version info!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ if( version != _PT_CF_VERSION ) {
+ DBG( _DBG_ERROR, "Versions do not match!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ usb_CreatePrefix( dev, pfx, SANE_TRUE );
+
+ ret = SANE_FALSE;
+ if( usb_ReadSpecLine( fp, pfx, tmp )) {
+ DBG( _DBG_INFO, "- Calibration data: %s\n", tmp );
+
+ res = sscanf( tmp, "%hu,%hu,%hu,%hu,%hu,%hu,"
+ "%lu,%lu,%lu,%lu,%lu,%lu,%lu\n",
+ &cal.red_gain, &cal.red_offs,
+ &cal.green_gain, &cal.green_offs,
+ &cal.blue_gain, &cal.blue_offs,
+ &cal.light.red_light_on, &cal.light.red_light_off,
+ &cal.light.green_light_on, &cal.light.green_light_off,
+ &cal.light.blue_light_on, &cal.light.blue_light_off,
+ &cal.light.green_pwm_duty );
+
+ if( 13 == res ) {
+ usb_RestoreCalData( dev, &cal );
+ ret = SANE_TRUE;
+ } else {
+ DBG( _DBG_ERROR, "Error reading coarse-calibration data, only "
+ "%d elements available!\n", res );
+ }
+ } else {
+ DBG( _DBG_ERROR, "Error reading coarse-calibration data for "
+ "PFX: >%s<!\n", pfx );
+ }
+
+ fclose( fp );
+ DBG( _DBG_INFO, "usb_ReadAndSetCalData() done -> %u\n", ret );
+
+ return ret;
+}
+
+/**
+ */
+static void
+usb_PrepCalData( Plustek_Device *dev, CalData *cal )
+{
+ u_char *regs = dev->usbDev.a_bRegs;
+
+ memset( cal, 0, sizeof(CalData));
+ cal->version = _PT_CF_VERSION;
+
+ cal->red_gain = (u_short)regs[0x3b];
+ cal->green_gain = (u_short)regs[0x3c];
+ cal->blue_gain = (u_short)regs[0x3d];
+ cal->red_offs = (u_short)regs[0x38];
+ cal->green_offs = (u_short)regs[0x39];
+ cal->blue_offs = (u_short)regs[0x3a];
+
+ cal->light.green_pwm_duty = regs[0x2a] * 256 + regs[0x2b];
+
+ cal->light.red_light_on = regs[0x2c] * 256 + regs[0x2d];
+ cal->light.red_light_off = regs[0x2e] * 256 + regs[0x2f];
+ cal->light.green_light_on = regs[0x30] * 256 + regs[0x31];
+ cal->light.green_light_off = regs[0x32] * 256 + regs[0x33];
+ cal->light.blue_light_on = regs[0x34] * 256 + regs[0x35];
+ cal->light.blue_light_off = regs[0x36] * 256 + regs[0x37];
+}
+
+/** function to save/update the calibration data
+ */
+static void
+usb_SaveCalData( Plustek_Device *dev )
+{
+ char pfx[20];
+ char fn[1024];
+ char tmp[1024];
+ char set_tmp[1024];
+ char *other_tmp;
+ u_short version;
+ FILE *fp;
+ CalData cal;
+ ScanDef *scanning = &dev->scanning;
+
+ DBG( _DBG_INFO, "usb_SaveCalData()\n" );
+
+ /* no new data, so skip this step too */
+ if( SANE_TRUE == scanning->skipCoarseCalib ) {
+ DBG( _DBG_INFO, "- No calibration data to save!\n" );
+ return;
+ }
+
+ if( NULL == dev->calFile ) {
+ DBG( _DBG_ERROR, "- No calibration filename set!\n" );
+ return;
+ }
+
+ sprintf( fn, "%s-coarse.cal", dev->calFile );
+ DBG( _DBG_INFO, "- Saving coarse calibration data to file\n" );
+ DBG( _DBG_INFO, " %s\n", fn );
+
+ usb_PrepCalData ( dev, &cal );
+ usb_CreatePrefix( dev, pfx, SANE_TRUE );
+ DBG( _DBG_INFO2, "- PFX: >%s<\n", pfx );
+
+ sprintf( set_tmp, "%s%u,%u,%u,%u,%u,%u,"
+ "%lu,%lu,%lu,%lu,%lu,%lu,%lu\n", pfx,
+ cal.red_gain, cal.red_offs,
+ cal.green_gain, cal.green_offs,
+ cal.blue_gain, cal.blue_offs,
+ cal.light.red_light_on, cal.light.red_light_off,
+ cal.light.green_light_on, cal.light.green_light_off,
+ cal.light.blue_light_on, cal.light.blue_light_off,
+ cal.light.green_pwm_duty );
+
+ /* read complete old file if compatible... */
+ other_tmp = NULL;
+ fp = fopen( fn, "r+" );
+ if( NULL != fp ) {
+
+ if( usb_ReadSpecLine( fp, "version=", tmp )) {
+ DBG( _DBG_INFO, "- Calibration file version: %s\n", tmp );
+
+ if( 1 == sscanf( tmp, "0x%04hx", &version )) {
+
+ if( version == cal.version ) {
+
+ DBG( _DBG_INFO, "- Versions do match\n" );
+
+ /* read the rest... */
+ other_tmp = usb_ReadOtherLines( fp, pfx );
+ } else {
+ DBG( _DBG_INFO2, "- Versions do not match (0x%04x)\n", version );
+ }
+ } else {
+ DBG( _DBG_INFO2, "- cannot decode version\n" );
+ }
+ } else {
+ DBG( _DBG_INFO2, "- Version not found\n" );
+ }
+ fclose( fp );
+ }
+ fp = fopen( fn, "w+" );
+ if( NULL == fp ) {
+ DBG( _DBG_ERROR, "- Cannot create file %s\n", fn );
+ DBG( _DBG_ERROR, "- -> %s\n", strerror(errno));
+ if( other_tmp )
+ free( other_tmp );
+ return;
+ }
+
+ /* rewrite the file again... */
+ fprintf( fp, "version=0x%04X\n", cal.version );
+ if( strlen( set_tmp ))
+ fprintf( fp, "%s", set_tmp );
+
+ if( other_tmp ) {
+ fprintf( fp, "%s", other_tmp );
+ free( other_tmp );
+ }
+ fclose( fp );
+ DBG( _DBG_INFO, "usb_SaveCalData() done.\n" );
+}
+
+/**
+ */
+static void
+usb_SaveFineCalData( Plustek_Device *dev, int dpi,
+ u_short *dark, u_short *white, u_long vals )
+{
+ char pfx[30];
+ char fn[1024];
+ char tmp[1024];
+ char *other_tmp;
+ u_short version;
+ u_long i;
+ FILE *fp;
+
+ if( NULL == dev->calFile ) {
+ DBG( _DBG_ERROR, "- No calibration filename set!\n" );
+ return;
+ }
+
+ sprintf( fn, "%s-fine.cal", dev->calFile );
+ DBG( _DBG_INFO, "- Saving fine calibration data to file\n" );
+ DBG( _DBG_INFO, " %s\n", fn );
+
+ usb_CreatePrefix( dev, pfx, SANE_FALSE );
+ sprintf( tmp, "%s:%u", pfx, dpi );
+ strcpy( pfx, tmp );
+ DBG( _DBG_INFO2, "- PFX: >%s<\n", pfx );
+
+ /* read complete old file if compatible... */
+ other_tmp = NULL;
+ fp = fopen( fn, "r+" );
+ if( NULL != fp ) {
+
+ if( usb_ReadSpecLine( fp, "version=", tmp )) {
+ DBG( _DBG_INFO, "- Calibration file version: %s\n", tmp );
+
+ if( 1 == sscanf( tmp, "0x%04hx", &version )) {
+
+ if( version == _PT_CF_VERSION ) {
+ DBG( _DBG_INFO, "- Versions do match\n" );
+
+ /* read the rest... */
+ other_tmp = usb_ReadOtherLines( fp, pfx );
+ } else {
+ DBG( _DBG_INFO2, "- Versions do not match (0x%04x)\n", version );
+ }
+ } else {
+ DBG( _DBG_INFO2, "- cannot decode version\n" );
+ }
+ } else {
+ DBG( _DBG_INFO2, "- Version not found\n" );
+ }
+ fclose( fp );
+ }
+
+ fp = fopen( fn, "w+" );
+ if( NULL == fp ) {
+ DBG( _DBG_ERROR, "- Cannot create file %s\n", fn );
+ return;
+ }
+
+ /* rewrite the file again... */
+ fprintf( fp, "version=0x%04X\n", _PT_CF_VERSION );
+
+ if( other_tmp ) {
+ fprintf( fp, "%s", other_tmp );
+ free( other_tmp );
+ }
+
+ fprintf( fp, "%s:dark:dim=%lu:", pfx, vals );
+ for( i=0; i<vals-1; i++ )
+ fprintf( fp, "%u,", dark[i]);
+ fprintf( fp, "%u\n", dark[vals-1]);
+
+ fprintf( fp, "%s:white:dim=%lu:", pfx, vals );
+ for( i=0; i<vals-1; i++ )
+ fprintf( fp, "%u,", white[i]);
+ fprintf( fp, "%u\n", white[vals-1]);
+
+ fclose( fp );
+}
+
+/** function to read and set the calibration data from external file
+ */
+static SANE_Bool
+usb_ReadFineCalData( Plustek_Device *dev, int dpi,
+ u_long *dim_d, u_short *dark,
+ u_long *dim_w, u_short *white )
+{
+ char pfx[30];
+ char tmp[1024];
+ u_short version;
+ FILE *fp;
+
+ DBG( _DBG_INFO, "usb_ReadFineCalData()\n" );
+ if( usb_InCalibrationMode(dev)) {
+ DBG( _DBG_INFO, "- we are in calibration mode!\n" );
+ return SANE_FALSE;
+ }
+
+ if( NULL == dev->calFile ) {
+ DBG( _DBG_ERROR, "- No calibration filename set!\n" );
+ return SANE_FALSE;
+ }
+
+ sprintf( tmp, "%s-fine.cal", dev->calFile );
+ DBG( _DBG_INFO, "- Reading fine calibration data from file\n");
+ DBG( _DBG_INFO, " %s\n", tmp );
+
+ *dim_d = *dim_w = 0;
+
+ fp = fopen( tmp, "r" );
+ if( NULL == fp ) {
+ DBG( _DBG_ERROR, "File %s not found\n", tmp );
+ return SANE_FALSE;
+ }
+
+ /* check version */
+ if( !usb_ReadSpecLine( fp, "version=", tmp )) {
+ DBG( _DBG_ERROR, "Could not find version info!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ DBG( _DBG_INFO, "- Calibration file version: %s\n", tmp );
+ if( 1 != sscanf( tmp, "0x%04hx", &version )) {
+ DBG( _DBG_ERROR, "Could not decode version info!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ if( version != _PT_CF_VERSION ) {
+ DBG( _DBG_ERROR, "Versions do not match!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ usb_CreatePrefix( dev, pfx, SANE_FALSE );
+
+ sprintf( tmp, "%s:%u:%s:dim=", pfx, dpi, "dark" );
+ if( !usb_ReadSamples( fp, tmp, dim_d, dark )) {
+ DBG( _DBG_ERROR, "Error reading dark-calibration data!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ sprintf( tmp, "%s:%u:%s:dim=", pfx, dpi, "white" );
+ if( !usb_ReadSamples( fp, tmp, dim_w, white )) {
+ DBG( _DBG_ERROR, "Error reading white-calibration data!\n" );
+ fclose( fp );
+ return SANE_FALSE;
+ }
+
+ fclose( fp );
+ return SANE_TRUE;
+}
+
+/**
+ */
+static void
+usb_get_shading_part(u_short *buf, u_long offs, u_long src_len, int dst_len)
+{
+ u_short *p_src, *p_dst;
+ int i, j;
+
+ if (src_len == 0 || dst_len == 0)
+ return;
+
+ p_dst = buf;
+ for (i=0; i<3; i++) {
+
+ p_src = buf + src_len * i + offs;
+
+ for (j=0; j<dst_len; j++) {
+
+ *(p_dst++) = *(p_src++);
+ }
+ }
+}
+
+/** function to read the fine calibration results from file
+ * and to set the correct part of the calibration buffers for
+ * storing in the device
+ * @param dev - the almigthy device structure
+ * @returns SANE_FALSE when the reading fails or SANE_TRUE on success
+ */
+static SANE_Bool
+usb_FineShadingFromFile( Plustek_Device *dev )
+{
+ ScanDef *scan = &dev->scanning;
+ ScanParam *sp = &scan->sParam;
+ u_short xdpi;
+ u_long dim_w, dim_d, offs;
+
+ xdpi = usb_SetAsicDpiX( dev, sp->UserDpi.x );
+
+ if( !usb_ReadFineCalData( dev, xdpi, &dim_d, a_wDarkShading,
+ &dim_w, a_wWhiteShading)) {
+ return SANE_FALSE;
+ }
+
+ /* now we need to get the correct part of the line... */
+ dim_d /= 3;
+ dim_w /= 3;
+
+ offs = ((u_long)sp->Origin.x * xdpi) / 300;
+
+ usb_GetPhyPixels( dev, sp );
+
+ DBG( _DBG_INFO2, "FINE Calibration from file:\n" );
+ DBG( _DBG_INFO2, "XDPI = %u\n", xdpi );
+ DBG( _DBG_INFO2, "Dim = %lu\n", dim_d );
+ DBG( _DBG_INFO2, "Pixels = %lu\n", sp->Size.dwPixels );
+ DBG( _DBG_INFO2, "PhyPixels = %lu\n", sp->Size.dwPhyPixels );
+ DBG( _DBG_INFO2, "Origin.X = %u\n", sp->Origin.x );
+ DBG( _DBG_INFO2, "Offset = %lu\n", offs );
+
+ usb_get_shading_part(a_wDarkShading, offs, dim_d, sp->Size.dwPhyPixels);
+ usb_get_shading_part(a_wWhiteShading, offs, dim_w, sp->Size.dwPhyPixels);
+
+ return SANE_TRUE;
+}
+
+/** function to save the fine calibration results and to set the correct part
+ * of the calibration buffers for storing in the device
+ * @param dev - the almigthy device structure
+ * @param tmp_sp - intermediate scan parameter
+ */
+static void
+usb_SaveCalSetShading( Plustek_Device *dev, ScanParam *tmp_sp )
+{
+ ScanParam *sp = &dev->scanning.sParam;
+ u_short xdpi;
+ u_long offs;
+
+ if( !dev->adj.cacheCalData )
+ return;
+
+ /* save the values */
+ xdpi = usb_SetAsicDpiX( dev, tmp_sp->UserDpi.x );
+
+ usb_SaveFineCalData( dev, xdpi, a_wDarkShading,
+ a_wWhiteShading, tmp_sp->Size.dwPixels*3 );
+
+ /* now we need to get the correct part of the line... */
+ xdpi = usb_SetAsicDpiX( dev, sp->UserDpi.x );
+ offs = ((u_long)sp->Origin.x * xdpi) / 300;
+ usb_GetPhyPixels( dev, sp );
+
+ DBG( _DBG_INFO2, "FINE Calibration area after saving:\n" );
+ DBG( _DBG_INFO2, "XDPI = %u\n", xdpi );
+ DBG( _DBG_INFO2, "Dim = %lu\n", tmp_sp->Size.dwPixels );
+ DBG( _DBG_INFO2, "Pixels = %lu\n", sp->Size.dwPixels );
+ DBG( _DBG_INFO2, "PhyPixels = %lu\n", sp->Size.dwPhyPixels );
+ DBG( _DBG_INFO2, "Origin.X = %u\n", sp->Origin.x );
+ DBG( _DBG_INFO2, "Offset = %lu\n", offs );
+
+ if (!usb_InCalibrationMode(dev)) {
+
+ usb_get_shading_part( a_wDarkShading, offs,
+ tmp_sp->Size.dwPixels, sp->Size.dwPhyPixels );
+ usb_get_shading_part( a_wWhiteShading, offs,
+ tmp_sp->Size.dwPixels, sp->Size.dwPhyPixels );
+
+ memcpy( tmp_sp, sp, sizeof(ScanParam));
+ tmp_sp->bBitDepth = 16;
+
+ usb_GetPhyPixels( dev, tmp_sp );
+ }
+}
+
+/* END PLUSTEK-USBCALFILE.C .................................................*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 09:43:00 +0000