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@ -12,7 +12,7 @@ endif(WIN32)
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# The version number.
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set (Rgb2Hires_VERSION_MAJOR 1)
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set (Rgb2Hires_VERSION_MINOR 0)
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set(CMAKE_CXX_STANDARD 14)
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set(CMAKE_CXX_STANDARD 17) # required to use <filesystem>
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set(CMAKE_VERBOSE_MAKEFILE ON)
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# dependencies
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@ -51,9 +51,11 @@ int main( int argc, char *argv[] )
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TCLAP::ValueArg<string> imagePath("i", "image", "Source image path", true, "", "path_to_image");
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TCLAP::ValueArg<string> outputPath("o", "output", "Output path", true, "", "path_to_output");
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TCLAP::SwitchArg assembly("a", "asm", "Output asm format");
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TCLAP::SwitchArg preview("p", "preview", "Open a window to display a preview.");
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cmd.add(imagePath);
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cmd.add(outputPath);
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cmd.add(assembly);
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cmd.add(preview);
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cmd.parse(argc, argv);
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if (imagePath.getValue().size() == 0 || outputPath.getValue().size() == 0) {
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@ -61,7 +63,8 @@ int main( int argc, char *argv[] )
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return -1;
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}
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try {
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try
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{
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const auto filepath = imagePath.getValue();
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if (!exists(filepath)) {
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throw runtime_error("Cannot read " + filepath);
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@ -80,7 +83,7 @@ int main( int argc, char *argv[] )
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}
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const auto bytes = imageHiRes.getBlob();
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Display::Display(bytes->data());
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Display::Window::GetInstance()->display(filepath, bytes->data());
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}
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@ -1,6 +1,9 @@
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#include <filesystem>
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#include <stdexcept>
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#include <iostream>
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#include <SDL.h>
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#include "Picture.h"
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#include "Display.h"
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@ -11,6 +14,123 @@ namespace RgbToHires
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namespace Display
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{
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//! @brief Output the colors from a 14-dot block
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void UpdateHiResRGBCell(const int x, const uint8_t* pLineAddr, rgba8Bits_t* pOut);
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std::unique_ptr<Screen> ComputeRgbBuffer(const uint8_t* hires);
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Window* Window::S_pInstance = nullptr;
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Window::~Window()
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{
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if (_pTexture != nullptr) {
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SDL_DestroyTexture(_pTexture);
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}
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if (_pRenderer != nullptr) {
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SDL_DestroyRenderer(_pRenderer);
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}
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if (_pWindow != nullptr) {
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SDL_DestroyWindow(_pWindow);
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}
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SDL_Quit();
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}
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Window* Window::GetInstance()
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{
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if (S_pInstance == nullptr) {
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S_pInstance = new Window;
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S_pInstance->init();
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}
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return S_pInstance;
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}
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bool Window::init()
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{
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// init
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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sdlError("cannot initialise the preview window.");
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}
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SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0"); // nearest neighbor
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// window
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_pWindow = SDL_CreateWindow("Preview", SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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560 * SCALE,
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384 * SCALE,
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SDL_WINDOW_SHOWN
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);
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if (_pWindow == nullptr) {
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sdlError("cannot initialise the preview window.");
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}
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// renderer
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_pRenderer = SDL_CreateRenderer(_pWindow, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
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if (_pRenderer == nullptr) {
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sdlError("cannot initialise the preview window.");
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}
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// texture
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_pTexture = SDL_CreateTexture(_pRenderer, SDL_PIXELFORMAT_BGR888, SDL_TEXTUREACCESS_STATIC, 560, 384);
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if (_pTexture == nullptr) {
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sdlError("cannot initialise the preview window.");
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}
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return true;
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}
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void Window::sdlError(const std::string& msg)
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{
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throw std::runtime_error{ "Error: " + msg };
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}
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void Window::display(const std::string& path, const uint8_t* hiresblob)
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{
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bool isImgModified = false;
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auto timeModified = std::filesystem::last_write_time(path);
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{
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auto pViewport = ComputeRgbBuffer(hiresblob);
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SDL_UpdateTexture(_pTexture, nullptr, pViewport->data(), sizeof(rgba8Bits_t) * 560);
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SDL_RenderClear(_pRenderer);
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SDL_RenderCopy(_pRenderer, _pTexture, NULL, NULL);
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SDL_RenderPresent(_pRenderer);
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}
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// event loop
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SDL_Event e;
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while (true)
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{
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if (isImgModified)
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{
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// new modification time
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timeModified = std::filesystem::last_write_time(path);
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// update hires image
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const auto imageRgb = Magick::Image{ path };
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auto imageQuantized = ImageQuantized{ imageRgb };
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const auto imageHiRes = Picture{ imageQuantized };
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// rgb conversion from hires data
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auto pViewport = ComputeRgbBuffer(imageHiRes.getBlob()->data());
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// update the display with rgb data
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SDL_UpdateTexture(_pTexture, nullptr, pViewport->data(), sizeof(rgba8Bits_t) * 560);
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SDL_RenderClear(_pRenderer);
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SDL_RenderCopy(_pRenderer, _pTexture, NULL, NULL);
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SDL_RenderPresent(_pRenderer);
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}
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if (SDL_WaitEventTimeout(&e, 250))
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{
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if (e.type == SDL_QUIT) { break; }
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}
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isImgModified = (timeModified != std::filesystem::last_write_time(path));
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}
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}
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void SdlError(const std::string& error,
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SDL_Window* const pWindow = nullptr,
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SDL_Renderer* const pRenderer = nullptr
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@ -29,14 +149,6 @@ namespace RgbToHires
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exit(1);
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}
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struct rgba8Bits_t
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{
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uint8_t r = 0;
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uint8_t g = 0;
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uint8_t b = 0;
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uint8_t a = 0xff;
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};
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constexpr std::array<rgba8Bits_t, 7> Palette = {
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rgba8Bits_t{0x00,0x00,0x00, 0xFF}, // black
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@ -52,7 +164,6 @@ namespace RgbToHires
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//===========================================================================
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// RGB videocards HGR
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//! @brief Output the colors from a 14-dot block
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//! @details Adapted from AppleWin: https://github.com/AppleWin/AppleWin
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//! A 14-dot block is used to draw a 7-pixel block (2 * 3.5-pixel blocks)
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//! Each dot of a 3.5-pixel block can be delayed so we draw on 2 subdots.
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@ -60,7 +171,7 @@ namespace RgbToHires
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//! @param x Vertical position of the 14-dot block
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//! @param pLineAddr pointer to the start of the line
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//! @param pOut pointer to the 28-subdot block to draw
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void UpdateHiResRGBCell(const int x, uint8_t* pLineAddr, rgba8Bits_t* pOut)
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void UpdateHiResRGBCell(const int x, const uint8_t* pLineAddr, rgba8Bits_t* pOut)
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{
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const int xpixel = x * 14;
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int xoffset = x & 1; // offset to start of the 2 bytes
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@ -133,13 +244,10 @@ namespace RgbToHires
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}
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}
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void Display(uint8_t* blob)
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std::unique_ptr<Screen> ComputeRgbBuffer(const uint8_t* hires)
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{
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using Block = std::array<rgba8Bits_t, 14>;
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using Line = std::array<Block, 40>;
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using Screen = std::array<Line, 192 * 2>;
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// Getting a RGB framebuffer
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// Converting line per line, pixel-block per pixel-block
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auto pViewport = make_unique<Screen>();
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auto itLine = std::begin(*pViewport);
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@ -147,7 +255,7 @@ namespace RgbToHires
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{
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for (const auto lineOffset : LineOffsets)
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{
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uint8_t* pHires = blob + lineBlockOffset + lineOffset; // interleaved HIRES source line
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const uint8_t* pHires = hires + lineBlockOffset + lineOffset; // interleaved HIRES source line
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for (std::size_t x = 0; x < itLine->size(); ++x)
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{
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auto& block = (*itLine)[x];
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@ -158,54 +266,9 @@ namespace RgbToHires
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}
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}
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// Display with SDL
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constexpr int scale = 1;
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// init
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if (SDL_Init(SDL_INIT_VIDEO) != 0) {
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SdlError("cannot initialise the preview window.");
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return pViewport;
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}
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SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0"); // nearest neighbor
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// window
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SDL_Window* pWindow = SDL_CreateWindow("Preview", SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED,
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560 * scale,
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384 * scale,
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SDL_WINDOW_SHOWN
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);
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if (pWindow == nullptr) {
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SdlError("cannot initialise the preview window.");
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}
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// renderer
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SDL_Renderer* pRenderer = SDL_CreateRenderer(pWindow, -1, SDL_RENDERER_ACCELERATED);
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if (pRenderer == nullptr) {
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SdlError("cannot initialise the preview window.", pWindow);
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}
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// texture
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SDL_Texture* pTexture = SDL_CreateTexture(pRenderer, SDL_PIXELFORMAT_BGR888, SDL_TEXTUREACCESS_STATIC, 560, 384);
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if (pTexture == nullptr) {
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SdlError("cannot initialise the preview window.", pWindow, pRenderer);
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}
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// display
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SDL_UpdateTexture(pTexture, nullptr, pViewport->data(), sizeof(rgba8Bits_t) * 560);
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SDL_RenderClear(pRenderer);
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SDL_RenderCopy(pRenderer, pTexture, NULL, NULL);
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SDL_RenderPresent(pRenderer);
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// event loop
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while (true)
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{
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SDL_Event e;
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if (SDL_WaitEvent(&e))
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{
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if (e.type == SDL_QUIT) { break; }
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}
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}
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// free
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SDL_DestroyTexture(pTexture);
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SDL_DestroyRenderer(pRenderer);
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SDL_DestroyWindow(pWindow);
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SDL_Quit();
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}
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}
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}
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#include "ImageQuantized.h"
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#include "HiRes.h"
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struct SDL_Window;
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struct SDL_Renderer;
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struct SDL_Texture;
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namespace RgbToHires
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{
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namespace Display
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{
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void Display(uint8_t* blob);
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struct rgba8Bits_t
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{
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uint8_t r = 0;
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uint8_t g = 0;
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uint8_t b = 0;
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uint8_t a = 0xff;
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};
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using Block = std::array<rgba8Bits_t, 14>;
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using Line = std::array<Block, 40>;
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using Screen = std::array<Line, 192 * 2>;
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class Window
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{
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public:
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Window() = default;
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~Window();
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static Window* GetInstance();
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void display(const std::string& path, const uint8_t* hiresblob);
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private:
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bool init();
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void sdlError(const std::string& msg);
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static Window* S_pInstance;
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static const int SCALE = 2;
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SDL_Window* _pWindow = nullptr;
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SDL_Renderer* _pRenderer = nullptr;
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SDL_Texture* _pTexture = nullptr;
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};
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}
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}
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