kopia lustrzana https://gitlab.com/sane-project/backends
332 wiersze
11 KiB
C++
332 wiersze
11 KiB
C++
/* sane - Scanner Access Now Easy.
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Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice.
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*/
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#ifndef BACKEND_GENESYS_SETTINGS_H
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#define BACKEND_GENESYS_SETTINGS_H
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#include "enums.h"
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#include "serialize.h"
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namespace genesys {
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struct Genesys_Settings
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{
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ScanMethod scan_method = ScanMethod::FLATBED;
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ScanColorMode scan_mode = ScanColorMode::LINEART;
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// horizontal dpi
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unsigned xres = 0;
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// vertical dpi
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unsigned yres = 0;
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//x start on scan table in mm
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double tl_x = 0;
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// y start on scan table in mm
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double tl_y = 0;
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// number of lines at scan resolution
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unsigned int lines = 0;
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// number of pixels expected from the scanner
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unsigned int pixels = 0;
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// number of pixels expected by the frontend
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unsigned requested_pixels = 0;
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// bit depth of the scan
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unsigned int depth = 0;
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ColorFilter color_filter = ColorFilter::NONE;
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// true if scan is true gray, false if monochrome scan
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int true_gray = 0;
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// lineart threshold
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int threshold = 0;
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// lineart threshold curve for dynamic rasterization
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int threshold_curve = 0;
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// Disable interpolation for xres<yres
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int disable_interpolation = 0;
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// value for contrast enhancement in the [-100..100] range
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int contrast = 0;
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// value for brightness enhancement in the [-100..100] range
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int brightness = 0;
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// cache entries expiration time
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int expiration_time = 0;
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unsigned get_channels() const
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{
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if (scan_mode == ScanColorMode::COLOR_SINGLE_PASS)
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return 3;
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return 1;
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}
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};
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std::ostream& operator<<(std::ostream& out, const Genesys_Settings& settings);
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struct SetupParams {
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static constexpr unsigned NOT_SET = std::numeric_limits<unsigned>::max();
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// resolution in x direction
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unsigned xres = NOT_SET;
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// resolution in y direction
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unsigned yres = NOT_SET;
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// start pixel in X direction, from dummy_pixel + 1
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unsigned startx = NOT_SET;
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// start pixel in Y direction, counted according to base_ydpi
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unsigned starty = NOT_SET;
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// the number of pixels in X direction. Note that each logical pixel may correspond to more
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// than one CCD pixel, see CKSEL and GenesysSensor::ccd_pixels_per_system_pixel()
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unsigned pixels = NOT_SET;
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// the number of pixels in the X direction as requested by the frontend. This will be different
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// from `pixels` if the X resolution requested by the frontend is different than the actual
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// resolution. This is only needed to compute dev->total_bytes_to_read. If 0, then the value
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// is the same as pixels.
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// TODO: move the computation of total_bytes_to_read to a higher layer.
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unsigned requested_pixels = 0;
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// the number of pixels in Y direction
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unsigned lines = NOT_SET;
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// the depth of the scan in bits. Allowed are 1, 8, 16
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unsigned depth = NOT_SET;
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// the number of channels
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unsigned channels = NOT_SET;
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ScanMethod scan_method = static_cast<ScanMethod>(NOT_SET);
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ScanColorMode scan_mode = static_cast<ScanColorMode>(NOT_SET);
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ColorFilter color_filter = static_cast<ColorFilter>(NOT_SET);
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ScanFlag flags;
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unsigned get_requested_pixels() const
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{
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if (requested_pixels != 0) {
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return requested_pixels;
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}
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return pixels;
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}
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void assert_valid() const
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{
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if (xres == NOT_SET || yres == NOT_SET || startx == NOT_SET || starty == NOT_SET ||
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pixels == NOT_SET || lines == NOT_SET ||depth == NOT_SET || channels == NOT_SET ||
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scan_method == static_cast<ScanMethod>(NOT_SET) ||
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scan_mode == static_cast<ScanColorMode>(NOT_SET) ||
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color_filter == static_cast<ColorFilter>(NOT_SET))
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{
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throw std::runtime_error("SetupParams are not valid");
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}
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}
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bool operator==(const SetupParams& other) const
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{
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return xres == other.xres &&
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yres == other.yres &&
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startx == other.startx &&
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starty == other.starty &&
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pixels == other.pixels &&
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requested_pixels == other.requested_pixels &&
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lines == other.lines &&
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depth == other.depth &&
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channels == other.channels &&
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scan_method == other.scan_method &&
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scan_mode == other.scan_mode &&
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color_filter == other.color_filter &&
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flags == other.flags;
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}
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};
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std::ostream& operator<<(std::ostream& out, const SetupParams& params);
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template<class Stream>
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void serialize(Stream& str, SetupParams& x)
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{
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serialize(str, x.xres);
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serialize(str, x.yres);
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serialize(str, x.startx);
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serialize(str, x.starty);
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serialize(str, x.pixels);
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serialize(str, x.requested_pixels);
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serialize(str, x.lines);
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serialize(str, x.depth);
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serialize(str, x.channels);
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serialize(str, x.scan_method);
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serialize(str, x.scan_mode);
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serialize(str, x.color_filter);
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serialize(str, x.flags);
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}
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struct ScanSession {
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SetupParams params;
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// whether the session setup has been computed via compute_session()
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bool computed = false;
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// specifies the reduction (if any) of hardware dpi on the Genesys chip side.
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// except gl646
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unsigned hwdpi_divisor = 1;
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// specifies the reduction (if any) of CCD effective dpi which is performed by latching the
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// data coming from CCD in such a way that 1/2 or 3/4 of pixel data is ignored.
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unsigned ccd_size_divisor = 1;
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// the optical resolution of the scanner.
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unsigned optical_resolution = 0;
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// the number of pixels at the optical resolution, not including segmentation overhead.
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unsigned optical_pixels = 0;
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// the number of pixels at the optical resolution, including segmentation overhead.
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// only on gl846, g847
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unsigned optical_pixels_raw = 0;
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// the number of optical scan lines. Equal to output_line_count on CCD scanners.
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unsigned optical_line_count = 0;
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// the resolution of the output data.
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// gl843-only
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unsigned output_resolution = 0;
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// the number of pixels in output data (after desegmentation)
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unsigned output_pixels = 0;
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// the number of bytes in the output of a channel of a single line (after desegmentation)
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unsigned output_channel_bytes = 0;
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// the number of bytes in the output of a single line (after desegmentation)
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unsigned output_line_bytes = 0;
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// the number of bytes per line in the output data from the scanner (before desegmentation)
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// Equal to output_line_bytes if sensor does not have segments
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unsigned output_line_bytes_raw = 0;
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// the number of bytes per line as requested by the frontend
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unsigned output_line_bytes_requested = 0;
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// the number of lines in the output of the scanner. This must be larger than the user
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// requested number due to line staggering and color channel shifting.
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unsigned output_line_count = 0;
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// the total number of bytes to read from the scanner (before desegmentation)
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unsigned output_total_bytes_raw = 0;
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// the total number of bytes to read from the scanner (after desegmentation)
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unsigned output_total_bytes = 0;
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// the number of staggered lines (i.e. lines that overlap during scanning due to line being
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// thinner than the CCD element)
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unsigned num_staggered_lines = 0;
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// the number of lines that color channels shift due to different physical positions of
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// different color channels.
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unsigned max_color_shift_lines = 0;
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// actual line shift of the red color
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unsigned color_shift_lines_r = 0;
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// actual line shift of the green color
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unsigned color_shift_lines_g = 0;
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// actual line shift of the blue color
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unsigned color_shift_lines_b = 0;
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// the number of scanner segments used in the current scan
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unsigned segment_count = 1;
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// the physical pixel positions that are sent to the registers
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unsigned pixel_startx = 0;
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unsigned pixel_endx = 0;
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// certain scanners require the logical pixel count to be multiplied on certain resolutions
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unsigned pixel_count_multiplier = 1;
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// Distance in pixels between consecutive pixels, e.g. between odd and even pixels. Note that
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// the number of segments can be large.
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// only on gl124, gl846, gl847
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unsigned conseq_pixel_dist = 0;
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// The number of "even" pixels to scan. This corresponds to the number of pixels that will be
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// scanned from a single segment
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// only on gl124, gl846, gl847
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unsigned output_segment_pixel_group_count = 0;
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// The number of bytes to skip at start of line during desegmentation.
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// Currently it's always zero.
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unsigned output_segment_start_offset = 0;
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// the sizes of the corresponding buffers
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size_t buffer_size_read = 0;
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size_t buffer_size_lines = 0;
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size_t buffer_size_shrink = 0;
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size_t buffer_size_out = 0;
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// whether to enable ledadd functionality
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bool enable_ledadd = false;
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// what pipeline modifications are needed
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bool pipeline_needs_reorder = false;
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bool pipeline_needs_ccd = false;
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bool pipeline_needs_shrink = false;
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void assert_computed() const
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{
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if (!computed) {
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throw std::runtime_error("ScanSession is not computed");
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}
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}
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};
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std::ostream& operator<<(std::ostream& out, const ScanSession& session);
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std::ostream& operator<<(std::ostream& out, const SANE_Parameters& params);
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} // namespace genesys
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#endif // BACKEND_GENESYS_SETTINGS_H
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