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Diffstat (limited to 'backend/genesys/image.cpp')
| -rw-r--r-- | backend/genesys/image.cpp | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/backend/genesys/image.cpp b/backend/genesys/image.cpp new file mode 100644 index 0000000..7d386c6 --- /dev/null +++ b/backend/genesys/image.cpp @@ -0,0 +1,204 @@ +/* sane - Scanner Access Now Easy. + + Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt> + + 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. +*/ + +#define DEBUG_DECLARE_ONLY + +#include "image.h" + +#include <array> + +namespace genesys { + +Image::Image() = default; + +Image::Image(std::size_t width, std::size_t height, PixelFormat format) : + width_{width}, + height_{height}, + format_{format}, + row_bytes_{get_pixel_row_bytes(format_, width_)} +{ + data_.resize(get_row_bytes() * height); +} + +std::uint8_t* Image::get_row_ptr(std::size_t y) +{ + return data_.data() + row_bytes_ * y; +} + +const std::uint8_t* Image::get_row_ptr(std::size_t y) const +{ + return data_.data() + row_bytes_ * y; +} + +Pixel Image::get_pixel(std::size_t x, std::size_t y) const +{ + return get_pixel_from_row(get_row_ptr(y), x, format_); +} + +void Image::set_pixel(std::size_t x, std::size_t y, const Pixel& pixel) +{ + set_pixel_to_row(get_row_ptr(y), x, pixel, format_); +} + +RawPixel Image::get_raw_pixel(std::size_t x, std::size_t y) const +{ + return get_raw_pixel_from_row(get_row_ptr(y), x, format_); +} + +std::uint16_t Image::get_raw_channel(std::size_t x, std::size_t y, unsigned channel) const +{ + return get_raw_channel_from_row(get_row_ptr(y), x, channel, format_); +} + +void Image::set_raw_pixel(std::size_t x, std::size_t y, const RawPixel& pixel) +{ + set_raw_pixel_to_row(get_row_ptr(y), x, pixel, format_); +} + +void Image::resize(std::size_t width, std::size_t height, PixelFormat format) +{ + width_ = width; + height_ = height; + format_ = format; + row_bytes_ = get_pixel_row_bytes(format_, width_); + data_.resize(get_row_bytes() * height); +} + +template<PixelFormat SrcFormat, PixelFormat DstFormat> +void convert_pixel_row_impl2(const std::uint8_t* in_data, std::uint8_t* out_data, + std::size_t count) +{ + for (std::size_t i = 0; i < count; ++i) { + Pixel pixel = get_pixel_from_row(in_data, i, SrcFormat); + set_pixel_to_row(out_data, i, pixel, DstFormat); + } +} + +template<PixelFormat SrcFormat> +void convert_pixel_row_impl(const std::uint8_t* in_data, std::uint8_t* out_data, + PixelFormat out_format, std::size_t count) +{ + switch (out_format) { + case PixelFormat::I1: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::I1>(in_data, out_data, count); + return; + } + case PixelFormat::RGB111: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::RGB111>(in_data, out_data, count); + return; + } + case PixelFormat::I8: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::I8>(in_data, out_data, count); + return; + } + case PixelFormat::RGB888: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::RGB888>(in_data, out_data, count); + return; + } + case PixelFormat::BGR888: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::BGR888>(in_data, out_data, count); + return; + } + case PixelFormat::I16: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::I16>(in_data, out_data, count); + return; + } + case PixelFormat::RGB161616: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::RGB161616>(in_data, out_data, count); + return; + } + case PixelFormat::BGR161616: { + convert_pixel_row_impl2<SrcFormat, PixelFormat::BGR161616>(in_data, out_data, count); + return; + } + default: + throw SaneException("Unknown pixel format %d", static_cast<unsigned>(out_format)); + } +} +void convert_pixel_row_format(const std::uint8_t* in_data, PixelFormat in_format, + std::uint8_t* out_data, PixelFormat out_format, std::size_t count) +{ + if (in_format == out_format) { + std::memcpy(out_data, in_data, get_pixel_row_bytes(in_format, count)); + return; + } + + switch (in_format) { + case PixelFormat::I1: { + convert_pixel_row_impl<PixelFormat::I1>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::RGB111: { + convert_pixel_row_impl<PixelFormat::RGB111>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::I8: { + convert_pixel_row_impl<PixelFormat::I8>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::RGB888: { + convert_pixel_row_impl<PixelFormat::RGB888>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::BGR888: { + convert_pixel_row_impl<PixelFormat::BGR888>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::I16: { + convert_pixel_row_impl<PixelFormat::I16>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::RGB161616: { + convert_pixel_row_impl<PixelFormat::RGB161616>(in_data, out_data, out_format, count); + return; + } + case PixelFormat::BGR161616: { + convert_pixel_row_impl<PixelFormat::BGR161616>(in_data, out_data, out_format, count); + return; + } + default: + throw SaneException("Unknown pixel format %d", static_cast<unsigned>(in_format)); + } +} + +} // namespace genesys |