101 lines
2.0 KiB
C++
101 lines
2.0 KiB
C++
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#include <exception>
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#include "ImageQuantized.h"
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#include "HiRes.h"
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using namespace std;
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namespace RgbToHires {
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BlockHr::BlockHr()
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{
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_data[0] = 0;
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_data[1] = 0;
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}
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BlockHr::BlockHr(const BlockPixel& source)
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{
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const auto group = getGroup(source);
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//Init data, depending on the group
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for (auto& byte : _data) {
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//Hi bit depending on color group
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group == GROUP_1 ? byte = 0x0 : byte = 0x80;
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}
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//Getting the bit pairs
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//Left 7 bit group
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_data[0] |= getDibit(source[0]);
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_data[0] |= (getDibit(source[1]) << 2);
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_data[0] |= (getDibit(source[2]) << 4);
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//Right 7 bit group
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_data[1] |= getDibit(source[4]) << 1;
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_data[1] |= (getDibit(source[5]) << 3);
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_data[1] |= (getDibit(source[6]) << 5);
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//Middle pixel
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auto byte = getDibit(source[3]);
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_data[0] |= (((byte>>1) & 0x1) << 6);
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_data[1] |= (byte & 0x1);
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}
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BlockHr::eColorGroup BlockHr::getGroup(const BlockPixel& block) const
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{
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auto group = GROUP_1;
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for (const auto& color : block) {
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if (color == GREEN || color == VIOLET) {
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break;
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}
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if (color == ORANGE || color == BLUE) {
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group = GROUP_2;
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break;
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}
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}
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return group;
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}
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uint8_t BlockHr::getDibit(const Magick::Color& color) const
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{
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if (color == WHITE) {
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return 3;
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}
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else if (color == BLACK) {
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return 0;
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}
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else if (color == VIOLET || color == BLUE) {
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return 1;
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}
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else if (color == GREEN || color == ORANGE) {
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return 2;
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}
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else {
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auto msg = string("Unsupported color used as input for hires pixel\nRGB:");
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msg += to_string(color.redQuantum()) + to_string(color.greenQuantum()) + to_string(color.blueQuantum());
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throw(runtime_error(msg));
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}
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}
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HiRes::HiRes(const ImageQuantized& source)
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{
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auto pixel_src = source.getConstPixels(0u, 0u, WIDTH, HEIGHT);
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for (auto& line : _blobHr) {
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for (auto& block : line) {
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BlockPixel blockPxRgb;
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for (auto& pxRgb : blockPxRgb) {
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pxRgb = *pixel_src++;
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}
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block = BlockHr{ blockPxRgb };
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}
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}
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}
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} |