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authorJörg Frings-Fürst <debian@jff-webhosting.net>2020-03-30 21:30:45 +0200
committerJörg Frings-Fürst <debian@jff-webhosting.net>2020-03-30 21:30:45 +0200
commitee770c2346eb37e0dcb8b6cf3eaacf3d8efd6bbc (patch)
tree58f05092be1a17a939e861f8cadcda1b6ca2ecef /backend/genesys/image_pixel.cpp
parent0da9e21872802cfc6e975b1ebaf9efb9e5934d84 (diff)
parentfef76e17ed4c607ea73b81279f9ef1d7121be900 (diff)
Merge branch 'release/experimental/1.0.29-1_experimental1'experimental/1.0.29-1_experimental1
Diffstat (limited to 'backend/genesys/image_pixel.cpp')
-rw-r--r--backend/genesys/image_pixel.cpp509
1 files changed, 509 insertions, 0 deletions
diff --git a/backend/genesys/image_pixel.cpp b/backend/genesys/image_pixel.cpp
new file mode 100644
index 0000000..1b83e12
--- /dev/null
+++ b/backend/genesys/image_pixel.cpp
@@ -0,0 +1,509 @@
+/* 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 {
+
+struct PixelFormatDesc
+{
+ PixelFormat format;
+ unsigned depth;
+ unsigned channels;
+ ColorOrder order;
+};
+
+const PixelFormatDesc s_known_pixel_formats[] = {
+ { PixelFormat::I1, 1, 1, ColorOrder::RGB },
+ { PixelFormat::I8, 8, 1, ColorOrder::RGB },
+ { PixelFormat::I16, 16, 1, ColorOrder::RGB },
+ { PixelFormat::RGB111, 1, 3, ColorOrder::RGB },
+ { PixelFormat::RGB888, 8, 3, ColorOrder::RGB },
+ { PixelFormat::RGB161616, 16, 3, ColorOrder::RGB },
+ { PixelFormat::BGR888, 8, 3, ColorOrder::BGR },
+ { PixelFormat::BGR161616, 16, 3, ColorOrder::BGR },
+};
+
+
+ColorOrder get_pixel_format_color_order(PixelFormat format)
+{
+ for (const auto& desc : s_known_pixel_formats) {
+ if (desc.format == format)
+ return desc.order;
+ }
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+}
+
+
+unsigned get_pixel_format_depth(PixelFormat format)
+{
+ for (const auto& desc : s_known_pixel_formats) {
+ if (desc.format == format)
+ return desc.depth;
+ }
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+}
+
+unsigned get_pixel_channels(PixelFormat format)
+{
+ for (const auto& desc : s_known_pixel_formats) {
+ if (desc.format == format)
+ return desc.channels;
+ }
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+}
+
+std::size_t get_pixel_row_bytes(PixelFormat format, std::size_t width)
+{
+ std::size_t depth = get_pixel_format_depth(format) * get_pixel_channels(format);
+ std::size_t total_bits = depth * width;
+ return total_bits / 8 + ((total_bits % 8 > 0) ? 1 : 0);
+}
+
+std::size_t get_pixels_from_row_bytes(PixelFormat format, std::size_t row_bytes)
+{
+ std::size_t depth = get_pixel_format_depth(format) * get_pixel_channels(format);
+ return (row_bytes * 8) / depth;
+}
+
+PixelFormat create_pixel_format(unsigned depth, unsigned channels, ColorOrder order)
+{
+ for (const auto& desc : s_known_pixel_formats) {
+ if (desc.depth == depth && desc.channels == channels && desc.order == order) {
+ return desc.format;
+ }
+ }
+ throw SaneException("Unknown pixel format %d %d %d", depth, channels,
+ static_cast<unsigned>(order));
+}
+
+static inline unsigned read_bit(const std::uint8_t* data, std::size_t x)
+{
+ return (data[x / 8] >> (7 - (x % 8))) & 0x1;
+}
+
+static inline void write_bit(std::uint8_t* data, std::size_t x, unsigned value)
+{
+ value = (value & 0x1) << (7 - (x % 8));
+ std::uint8_t mask = 0x1 << (7 - (x % 8));
+
+ data[x / 8] = (data[x / 8] & ~mask) | (value & mask);
+}
+
+Pixel get_pixel_from_row(const std::uint8_t* data, std::size_t x, PixelFormat format)
+{
+ switch (format) {
+ case PixelFormat::I1: {
+ std::uint16_t val = read_bit(data, x) ? 0xffff : 0x0000;
+ return Pixel(val, val, val);
+ }
+ case PixelFormat::RGB111: {
+ x *= 3;
+ std::uint16_t r = read_bit(data, x) ? 0xffff : 0x0000;
+ std::uint16_t g = read_bit(data, x + 1) ? 0xffff : 0x0000;
+ std::uint16_t b = read_bit(data, x + 2) ? 0xffff : 0x0000;
+ return Pixel(r, g, b);
+ }
+ case PixelFormat::I8: {
+ std::uint16_t val = std::uint16_t(data[x]) | (data[x] << 8);
+ return Pixel(val, val, val);
+ }
+ case PixelFormat::I16: {
+ x *= 2;
+ std::uint16_t val = std::uint16_t(data[x]) | (data[x + 1] << 8);
+ return Pixel(val, val, val);
+ }
+ case PixelFormat::RGB888: {
+ x *= 3;
+ std::uint16_t r = std::uint16_t(data[x]) | (data[x] << 8);
+ std::uint16_t g = std::uint16_t(data[x + 1]) | (data[x + 1] << 8);
+ std::uint16_t b = std::uint16_t(data[x + 2]) | (data[x + 2] << 8);
+ return Pixel(r, g, b);
+ }
+ case PixelFormat::BGR888: {
+ x *= 3;
+ std::uint16_t b = std::uint16_t(data[x]) | (data[x] << 8);
+ std::uint16_t g = std::uint16_t(data[x + 1]) | (data[x + 1] << 8);
+ std::uint16_t r = std::uint16_t(data[x + 2]) | (data[x + 2] << 8);
+ return Pixel(r, g, b);
+ }
+ case PixelFormat::RGB161616: {
+ x *= 6;
+ std::uint16_t r = std::uint16_t(data[x]) | (data[x + 1] << 8);
+ std::uint16_t g = std::uint16_t(data[x + 2]) | (data[x + 3] << 8);
+ std::uint16_t b = std::uint16_t(data[x + 4]) | (data[x + 5] << 8);
+ return Pixel(r, g, b);
+ }
+ case PixelFormat::BGR161616: {
+ x *= 6;
+ std::uint16_t b = std::uint16_t(data[x]) | (data[x + 1] << 8);
+ std::uint16_t g = std::uint16_t(data[x + 2]) | (data[x + 3] << 8);
+ std::uint16_t r = std::uint16_t(data[x + 4]) | (data[x + 5] << 8);
+ return Pixel(r, g, b);
+ }
+ default:
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+ }
+}
+
+void set_pixel_to_row(std::uint8_t* data, std::size_t x, Pixel pixel, PixelFormat format)
+{
+ switch (format) {
+ case PixelFormat::I1:
+ write_bit(data, x, pixel.r & 0x8000 ? 1 : 0);
+ return;
+ case PixelFormat::RGB111: {
+ x *= 3;
+ write_bit(data, x, pixel.r & 0x8000 ? 1 : 0);
+ write_bit(data, x + 1,pixel.g & 0x8000 ? 1 : 0);
+ write_bit(data, x + 2, pixel.b & 0x8000 ? 1 : 0);
+ return;
+ }
+ case PixelFormat::I8: {
+ float val = (pixel.r >> 8) * 0.3f;
+ val += (pixel.g >> 8) * 0.59f;
+ val += (pixel.b >> 8) * 0.11f;
+ data[x] = static_cast<std::uint16_t>(val);
+ return;
+ }
+ case PixelFormat::I16: {
+ x *= 2;
+ float val = pixel.r * 0.3f;
+ val += pixel.g * 0.59f;
+ val += pixel.b * 0.11f;
+ auto val16 = static_cast<std::uint16_t>(val);
+ data[x] = val16 & 0xff;
+ data[x + 1] = (val16 >> 8) & 0xff;
+ return;
+ }
+ case PixelFormat::RGB888: {
+ x *= 3;
+ data[x] = pixel.r >> 8;
+ data[x + 1] = pixel.g >> 8;
+ data[x + 2] = pixel.b >> 8;
+ return;
+ }
+ case PixelFormat::BGR888: {
+ x *= 3;
+ data[x] = pixel.b >> 8;
+ data[x + 1] = pixel.g >> 8;
+ data[x + 2] = pixel.r >> 8;
+ return;
+ }
+ case PixelFormat::RGB161616: {
+ x *= 6;
+ data[x] = pixel.r & 0xff;
+ data[x + 1] = (pixel.r >> 8) & 0xff;
+ data[x + 2] = pixel.g & 0xff;
+ data[x + 3] = (pixel.g >> 8) & 0xff;
+ data[x + 4] = pixel.b & 0xff;
+ data[x + 5] = (pixel.b >> 8) & 0xff;
+ return;
+ }
+ case PixelFormat::BGR161616:
+ x *= 6;
+ data[x] = pixel.b & 0xff;
+ data[x + 1] = (pixel.b >> 8) & 0xff;
+ data[x + 2] = pixel.g & 0xff;
+ data[x + 3] = (pixel.g >> 8) & 0xff;
+ data[x + 4] = pixel.r & 0xff;
+ data[x + 5] = (pixel.r >> 8) & 0xff;
+ return;
+ default:
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+ }
+}
+
+RawPixel get_raw_pixel_from_row(const std::uint8_t* data, std::size_t x, PixelFormat format)
+{
+ switch (format) {
+ case PixelFormat::I1:
+ return RawPixel(read_bit(data, x));
+ case PixelFormat::RGB111: {
+ x *= 3;
+ return RawPixel(read_bit(data, x) << 2 |
+ (read_bit(data, x + 1) << 1) |
+ (read_bit(data, x + 2)));
+ }
+ case PixelFormat::I8:
+ return RawPixel(data[x]);
+ case PixelFormat::I16: {
+ x *= 2;
+ return RawPixel(data[x], data[x + 1]);
+ }
+ case PixelFormat::RGB888:
+ case PixelFormat::BGR888: {
+ x *= 3;
+ return RawPixel(data[x], data[x + 1], data[x + 2]);
+ }
+ case PixelFormat::RGB161616:
+ case PixelFormat::BGR161616: {
+ x *= 6;
+ return RawPixel(data[x], data[x + 1], data[x + 2],
+ data[x + 3], data[x + 4], data[x + 5]);
+ }
+ default:
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+ }
+}
+
+void set_raw_pixel_to_row(std::uint8_t* data, std::size_t x, RawPixel pixel, PixelFormat format)
+{
+ switch (format) {
+ case PixelFormat::I1:
+ write_bit(data, x, pixel.data[0] & 0x1);
+ return;
+ case PixelFormat::RGB111: {
+ x *= 3;
+ write_bit(data, x, (pixel.data[0] >> 2) & 0x1);
+ write_bit(data, x + 1, (pixel.data[0] >> 1) & 0x1);
+ write_bit(data, x + 2, (pixel.data[0]) & 0x1);
+ return;
+ }
+ case PixelFormat::I8:
+ data[x] = pixel.data[0];
+ return;
+ case PixelFormat::I16: {
+ x *= 2;
+ data[x] = pixel.data[0];
+ data[x + 1] = pixel.data[1];
+ return;
+ }
+ case PixelFormat::RGB888:
+ case PixelFormat::BGR888: {
+ x *= 3;
+ data[x] = pixel.data[0];
+ data[x + 1] = pixel.data[1];
+ data[x + 2] = pixel.data[2];
+ return;
+ }
+ case PixelFormat::RGB161616:
+ case PixelFormat::BGR161616: {
+ x *= 6;
+ data[x] = pixel.data[0];
+ data[x + 1] = pixel.data[1];
+ data[x + 2] = pixel.data[2];
+ data[x + 3] = pixel.data[3];
+ data[x + 4] = pixel.data[4];
+ data[x + 5] = pixel.data[5];
+ return;
+ }
+ default:
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+ }
+}
+
+std::uint16_t get_raw_channel_from_row(const std::uint8_t* data, std::size_t x, unsigned channel,
+ PixelFormat format)
+{
+ switch (format) {
+ case PixelFormat::I1:
+ return read_bit(data, x);
+ case PixelFormat::RGB111:
+ return read_bit(data, x * 3 + channel);
+ case PixelFormat::I8:
+ return data[x];
+ case PixelFormat::I16: {
+ x *= 2;
+ return data[x] | (data[x + 1] << 8);
+ }
+ case PixelFormat::RGB888:
+ case PixelFormat::BGR888:
+ return data[x * 3 + channel];
+ case PixelFormat::RGB161616:
+ case PixelFormat::BGR161616:
+ return data[x * 6 + channel * 2] | (data[x * 6 + channel * 2 + 1]) << 8;
+ default:
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+ }
+}
+
+void set_raw_channel_to_row(std::uint8_t* data, std::size_t x, unsigned channel,
+ std::uint16_t pixel, PixelFormat format)
+{
+ switch (format) {
+ case PixelFormat::I1:
+ write_bit(data, x, pixel & 0x1);
+ return;
+ case PixelFormat::RGB111: {
+ write_bit(data, x * 3 + channel, pixel & 0x1);
+ return;
+ }
+ case PixelFormat::I8:
+ data[x] = pixel;
+ return;
+ case PixelFormat::I16: {
+ x *= 2;
+ data[x] = pixel;
+ data[x + 1] = pixel >> 8;
+ return;
+ }
+ case PixelFormat::RGB888:
+ case PixelFormat::BGR888: {
+ x *= 3;
+ data[x + channel] = pixel;
+ return;
+ }
+ case PixelFormat::RGB161616:
+ case PixelFormat::BGR161616: {
+ x *= 6;
+ data[x + channel * 2] = pixel;
+ data[x + channel * 2 + 1] = pixel >> 8;
+ return;
+ }
+ default:
+ throw SaneException("Unknown pixel format %d", static_cast<unsigned>(format));
+ }
+}
+
+template<PixelFormat Format>
+Pixel get_pixel_from_row(const std::uint8_t* data, std::size_t x)
+{
+ return get_pixel_from_row(data, x, Format);
+}
+
+template<PixelFormat Format>
+void set_pixel_to_row(std::uint8_t* data, std::size_t x, Pixel pixel)
+{
+ set_pixel_to_row(data, x, pixel, Format);
+}
+
+template<PixelFormat Format>
+RawPixel get_raw_pixel_from_row(const std::uint8_t* data, std::size_t x)
+{
+ return get_raw_pixel_from_row(data, x, Format);
+}
+
+template<PixelFormat Format>
+void set_raw_pixel_to_row(std::uint8_t* data, std::size_t x, RawPixel pixel)
+{
+ set_raw_pixel_to_row(data, x, pixel, Format);
+}
+
+template<PixelFormat Format>
+std::uint16_t get_raw_channel_from_row(const std::uint8_t* data, std::size_t x, unsigned channel)
+{
+ return get_raw_channel_from_row(data, x, channel, Format);
+}
+
+template<PixelFormat Format>
+void set_raw_channel_to_row(std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel)
+{
+ set_raw_channel_to_row(data, x, channel, pixel, Format);
+}
+
+template Pixel get_pixel_from_row<PixelFormat::I1>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::RGB111>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::I8>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::RGB888>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::BGR888>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::I16>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::RGB161616>(const std::uint8_t* data, std::size_t x);
+template Pixel get_pixel_from_row<PixelFormat::BGR161616>(const std::uint8_t* data, std::size_t x);
+
+template RawPixel get_raw_pixel_from_row<PixelFormat::I1>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::RGB111>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::I8>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::RGB888>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::BGR888>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::I16>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::RGB161616>(const std::uint8_t* data, std::size_t x);
+template RawPixel get_raw_pixel_from_row<PixelFormat::BGR161616>(const std::uint8_t* data, std::size_t x);
+
+template std::uint16_t get_raw_channel_from_row<PixelFormat::I1>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::RGB111>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::I8>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::RGB888>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::BGR888>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::I16>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::RGB161616>(
+ const std::uint8_t* data, std::size_t x, unsigned channel);
+template std::uint16_t get_raw_channel_from_row<PixelFormat::BGR161616>
+ (const std::uint8_t* data, std::size_t x, unsigned channel);
+
+template void set_pixel_to_row<PixelFormat::I1>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::RGB111>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::I8>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::RGB888>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::BGR888>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::I16>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::RGB161616>(std::uint8_t* data, std::size_t x, Pixel pixel);
+template void set_pixel_to_row<PixelFormat::BGR161616>(std::uint8_t* data, std::size_t x, Pixel pixel);
+
+template void set_raw_pixel_to_row<PixelFormat::I1>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::RGB111>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::I8>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::RGB888>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::BGR888>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::I16>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::RGB161616>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+template void set_raw_pixel_to_row<PixelFormat::BGR161616>(std::uint8_t* data, std::size_t x, RawPixel pixel);
+
+template void set_raw_channel_to_row<PixelFormat::I1>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::RGB111>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::I8>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::RGB888>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::BGR888>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::I16>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::RGB161616>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+template void set_raw_channel_to_row<PixelFormat::BGR161616>(
+ std::uint8_t* data, std::size_t x, unsigned channel, std::uint16_t pixel);
+
+} // namespace genesys