kopia lustrzana https://gitlab.com/sane-project/backends
205 wiersze
6.9 KiB
C++
205 wiersze
6.9 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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#define DEBUG_DECLARE_ONLY
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#include "image.h"
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#include <array>
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namespace genesys {
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Image::Image() = default;
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Image::Image(std::size_t width, std::size_t height, PixelFormat format) :
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width_{width},
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height_{height},
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format_{format},
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row_bytes_{get_pixel_row_bytes(format_, width_)}
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{
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data_.resize(get_row_bytes() * height);
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}
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std::uint8_t* Image::get_row_ptr(std::size_t y)
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{
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return data_.data() + row_bytes_ * y;
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}
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const std::uint8_t* Image::get_row_ptr(std::size_t y) const
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{
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return data_.data() + row_bytes_ * y;
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}
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Pixel Image::get_pixel(std::size_t x, std::size_t y) const
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{
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return get_pixel_from_row(get_row_ptr(y), x, format_);
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}
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void Image::set_pixel(std::size_t x, std::size_t y, const Pixel& pixel)
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{
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set_pixel_to_row(get_row_ptr(y), x, pixel, format_);
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}
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RawPixel Image::get_raw_pixel(std::size_t x, std::size_t y) const
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{
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return get_raw_pixel_from_row(get_row_ptr(y), x, format_);
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}
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std::uint16_t Image::get_raw_channel(std::size_t x, std::size_t y, unsigned channel) const
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{
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return get_raw_channel_from_row(get_row_ptr(y), x, channel, format_);
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}
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void Image::set_raw_pixel(std::size_t x, std::size_t y, const RawPixel& pixel)
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{
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set_raw_pixel_to_row(get_row_ptr(y), x, pixel, format_);
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}
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void Image::resize(std::size_t width, std::size_t height, PixelFormat format)
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{
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width_ = width;
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height_ = height;
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format_ = format;
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row_bytes_ = get_pixel_row_bytes(format_, width_);
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data_.resize(get_row_bytes() * height);
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}
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template<PixelFormat SrcFormat, PixelFormat DstFormat>
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void convert_pixel_row_impl2(const std::uint8_t* in_data, std::uint8_t* out_data,
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std::size_t count)
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{
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for (std::size_t i = 0; i < count; ++i) {
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Pixel pixel = get_pixel_from_row(in_data, i, SrcFormat);
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set_pixel_to_row(out_data, i, pixel, DstFormat);
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}
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}
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template<PixelFormat SrcFormat>
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void convert_pixel_row_impl(const std::uint8_t* in_data, std::uint8_t* out_data,
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PixelFormat out_format, std::size_t count)
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{
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switch (out_format) {
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case PixelFormat::I1: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::I1>(in_data, out_data, count);
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return;
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}
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case PixelFormat::RGB111: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::RGB111>(in_data, out_data, count);
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return;
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}
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case PixelFormat::I8: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::I8>(in_data, out_data, count);
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return;
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}
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case PixelFormat::RGB888: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::RGB888>(in_data, out_data, count);
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return;
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}
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case PixelFormat::BGR888: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::BGR888>(in_data, out_data, count);
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return;
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}
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case PixelFormat::I16: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::I16>(in_data, out_data, count);
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return;
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}
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case PixelFormat::RGB161616: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::RGB161616>(in_data, out_data, count);
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return;
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}
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case PixelFormat::BGR161616: {
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convert_pixel_row_impl2<SrcFormat, PixelFormat::BGR161616>(in_data, out_data, count);
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return;
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}
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default:
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throw SaneException("Unknown pixel format %d", static_cast<unsigned>(out_format));
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}
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}
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void convert_pixel_row_format(const std::uint8_t* in_data, PixelFormat in_format,
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std::uint8_t* out_data, PixelFormat out_format, std::size_t count)
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{
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if (in_format == out_format) {
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std::memcpy(out_data, in_data, get_pixel_row_bytes(in_format, count));
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return;
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}
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switch (in_format) {
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case PixelFormat::I1: {
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convert_pixel_row_impl<PixelFormat::I1>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::RGB111: {
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convert_pixel_row_impl<PixelFormat::RGB111>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::I8: {
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convert_pixel_row_impl<PixelFormat::I8>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::RGB888: {
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convert_pixel_row_impl<PixelFormat::RGB888>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::BGR888: {
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convert_pixel_row_impl<PixelFormat::BGR888>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::I16: {
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convert_pixel_row_impl<PixelFormat::I16>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::RGB161616: {
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convert_pixel_row_impl<PixelFormat::RGB161616>(in_data, out_data, out_format, count);
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return;
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}
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case PixelFormat::BGR161616: {
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convert_pixel_row_impl<PixelFormat::BGR161616>(in_data, out_data, out_format, count);
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return;
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}
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default:
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throw SaneException("Unknown pixel format %d", static_cast<unsigned>(in_format));
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}
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}
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} // namespace genesys
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