kopia lustrzana https://gitlab.com/sane-project/backends
Enabled backtracking by default. This is slower but avois bumping the scan head
at the end of the scan area and also missing parts of the scanned image. Increased safety margin for backtracking. This fixes the "garbled image" bug. Set default gamma value to 2. Manpage update. Status set to "basic".merge-requests/1/head
Henning Geinitz
rodzic
dccf9e2fa2
commit
46cfa92d35
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@ -1,6 +1,13 @@
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2005-08-14 Henning Meier-Geinitz <henning@meier-geinitz.de>
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* Makefile.in: Added Changelog-1.0.16 to DISTFILES.
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* backend/hp4200.c doc/sane-hp4200.man
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doc/descriptions/hp4200.desc: Enabled backtracking by
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default. This is slower but avois bumping the scan head at the end
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of the scan area and also missing parts of the scanned
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image. Increased safety margin for backtracking. This fixes the
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"garbled image" bug. Set default gamma value to 2. Manpage
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update. Status set to "basic".
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2005-08-13 Henning Meier-Geinitz <henning@meier-geinitz.de>
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@ -46,7 +46,7 @@ TODO:
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*/
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#define BUILD 1
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#define BUILD 2
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#define BACKEND_NAME hp4200
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#include "../include/sane/config.h"
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@ -513,7 +513,7 @@ read_available_data (HP4200_Scanner * s, SANE_Byte * buffer,
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buffer += really_read;
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to_read -= really_read;
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#ifdef DEBUG
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fprintf (stderr, "he leido %d bytes\n", really_read);
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fprintf (stderr, "read %d bytes\n", really_read);
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#endif
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}
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return SANE_STATUS_GOOD;
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@ -912,10 +912,8 @@ compute_pause_limit (hardware_parameters_t * hw_parms, int bytes_per_line)
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coef_size = coef_mapping[hw_parms->sensor_resolution & 0x01];
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pause_limit = hw_parms->SRAM_size - coef_size - (bytes_per_line / 1024) - 1;
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#ifdef PROBLEMS_WITH_PAUSE_LIMIT
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if (pause_limit > 2)
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pause_limit--; /* or try -= 2 */
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#endif
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pause_limit -= 2;
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return pause_limit;
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}
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@ -2034,10 +2032,6 @@ end_scan (HP4200_Scanner * s)
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cache_write (s);
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setreg (s, 0x07, 0x02);
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#ifdef DEBUG
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fprintf (stderr, "%d bytes read\n", byte_count);
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#endif
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/* Free some buffers */
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if (s->ciclic_buffer.buffer)
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{
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@ -2567,7 +2561,7 @@ init_options (HP4200_Scanner * s)
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s->opt[OPT_BACKTRACK].size = sizeof (SANE_Bool);
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s->opt[OPT_BACKTRACK].unit = SANE_UNIT_NONE;
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s->opt[OPT_BACKTRACK].constraint_type = SANE_CONSTRAINT_NONE;
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s->val[OPT_BACKTRACK].b = SANE_FALSE;
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s->val[OPT_BACKTRACK].b = SANE_TRUE;
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s->opt[OPT_GAMMA_VECTOR_R].name = SANE_NAME_GAMMA_VECTOR_R;
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s->opt[OPT_GAMMA_VECTOR_R].title = SANE_TITLE_GAMMA_VECTOR_R;
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@ -2607,11 +2601,16 @@ init_options (HP4200_Scanner * s)
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{
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int i;
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double gamma = 2.0;
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for (i = 0; i < 1024; i++)
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{
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s->user_parms.gamma[0][i] = i / 4;
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s->user_parms.gamma[1][i] = i / 4;
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s->user_parms.gamma[2][i] = i / 4;
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s->user_parms.gamma[0][i] =
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255 * pow (((double) i + 1) / 1024, 1.0 / gamma);
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s->user_parms.gamma[1][i] = s->user_parms.gamma[0][i];
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s->user_parms.gamma[2][i] = s->user_parms.gamma[0][i];
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#ifdef DEBUG
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printf ("%d %d\n", i, s->user_parms.gamma[0][i]);
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#endif
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}
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}
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@ -10,7 +10,7 @@
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:backend "hp4200" ; name of backend
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:version "1.0-1" ; version of backend
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:version "1.0-2" ; version of backend
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:new :yes
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:manpage "sane-hp4200" ; name of manpage (if it exists)
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:url "http://hp4200-backend.sourceforge.net" ; backend's web page
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@ -24,18 +24,18 @@
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:model "ScanJet 4200C" ; name models for above-specified mfg.
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:interface "USB"
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:status :minimal
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:comment "8bpp, 150/300/600 dpi only, and scanned image needs postprocessing"
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:status :basic
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:comment "8bpp color, 75/150/300/600 dpi only"
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:model "ScanJet 4200Cxi" ; name models for above-specified mfg.
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:interface "USB"
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:status :minimal
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:comment "8bpp, 150/300/600 dpi only, and scanned image needs postprocessing"
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:status :basic
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:comment "8bpp color, 75/150/300/600 dpi only"
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:model "ScanJet 4200Cse" ; name models for above-specified mfg.
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:interface "USB"
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:status :minimal
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:comment "8bpp, 150/300/600 dpi only, and scanned image needs postprocessing"
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:status :basic
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:comment "8bpp color, 75/150/300/600 dpi only"
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; :comment and :url specifiers are optional after :mfg, :model, :desc,
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; and at the top-level.
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@ -1,4 +1,4 @@
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.TH sane-hp4200 5 "13 August 2005" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
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.TH sane-hp4200 5 "14 August 2005" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
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.IX sane-hp4200
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.SH NAME
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sane-hp4200 \- SANE backend for Hewlett-Packard 4200 scanners
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@ -19,7 +19,7 @@ ScanJet 4200 Cse
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More details can be found on the hp4200 backend homepage
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.IR http://hp4200-backend.sourceforge.net/ .
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.PP
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This is ALPHA software. Keep your hand at the scanner's plug and unplug it, if
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This is BETA software. Keep your hand at the scanner's plug and unplug it, if
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the head bumps at the end of the scan area.
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.PP
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If you own a scanner other than the ones listed above that works with this
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@ -95,4 +95,11 @@ Adrian Perez Jorge, Andrew John Lewis, Arnar Mar Hrafnkelsson, Frank Zago,
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Henning Meier-Geinitz. Current maintainer: Henning Meier-Geinitz <henning@meier-geinitz.de>.
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.SH BUGS
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Probably many. Send bug reports to the sane-devel mailing list: sane-devel@lists.alioth.debian.org.
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Tested only with Linux.
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.PP
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Only 8 bit color mode works.
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.PP
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Scanning is slow due to backtracking.
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.PP
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Send bug reports to the sane-devel mailing list:
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sane-devel@lists.alioth.debian.org.
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