SiandClaude Opus 5.5
a7cb2505d7
Corrupt's block damage moves to effects/corrupt_blocks.hpp so both share it; Corrupt renders exactly as before. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2322 lines
116 KiB
C++
2322 lines
116 KiB
C++
// Small self-contained checks for the pieces that have no GUI dependency.
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#include <algorithm>
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#include <array>
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#include <atomic>
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#include <clocale>
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#include <cstdio>
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#include <cstdlib>
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <locale>
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#include <mutex>
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#include <optional>
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#include <set>
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#include <string>
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#include <utility>
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#include <vector>
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#include "cli/options.hpp"
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#include "core/canvas.hpp"
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#include "core/chain.hpp"
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#include "core/memory.hpp"
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#include "core/project.hpp"
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#include "core/registry.hpp"
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#include "core/rng.hpp"
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#include "core/style.hpp"
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#include "core/version.hpp"
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#include "core/video.hpp"
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#include "effects/blur.hpp"
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#include "effects/channelsplit.hpp"
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#include "effects/grain.hpp"
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#include "effects/monochrome.hpp"
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#include "effects/overlay.hpp"
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#include "effects/scanlines.hpp"
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#include "effects/text.hpp"
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#include "effects/tiles.hpp"
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#include "effects/video_effect.hpp"
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namespace {
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int failures = 0;
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void check(bool condition, const std::string& what) {
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if (condition) {
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std::cout << " ok " << what << "\n";
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} else {
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std::cout << " FAIL " << what << "\n";
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++failures;
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}
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}
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effector::Image gradient(int width, int height, int shade) {
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effector::Image image(width, height);
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for (int y = 0; y < height; ++y) {
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auto* row = image.row(y);
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for (int x = 0; x < width; ++x) {
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row[x * 3 + 0] = static_cast<std::uint8_t>((x + shade) & 0xFF);
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row[x * 3 + 1] = static_cast<std::uint8_t>((y + shade) & 0xFF);
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row[x * 3 + 2] = static_cast<std::uint8_t>(shade);
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}
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}
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return image;
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}
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// A canvas taken from a project file, written by hand rather than by
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// projectToJson, so a size no writer would produce can be fed to the reader.
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std::string projectWithCanvas(const std::string& width, const std::string& height) {
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return "{\"canvas\": {\"width\": " + width + ", \"height\": " + height +
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"},\n \"chain\": [{\"effect\": \"blur\"}]}";
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}
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// The canvas a `-s` value ends up as, or nothing when the parser refuses it.
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std::optional<std::pair<int, int>> canvasFromSize(const std::string& size) {
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char program[] = "effector";
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char flag[] = "-s";
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std::vector<char> value(size.begin(), size.end());
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value.push_back('\0');
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char* argv[] = {program, flag, value.data()};
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try {
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const auto options = effector::parseOptions(3, argv);
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return std::pair<int, int>{options.width, options.height};
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} catch (const effector::EffectError&) {
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return std::nullopt;
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}
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}
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// The options a whole command line ends up as, or nothing when the parser
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// refuses it.
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std::optional<effector::Options> parsedOptions(const std::vector<std::string>& args) {
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std::vector<std::vector<char>> storage;
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storage.push_back({'e', 'f', 'f', 'e', 'c', 't', 'o', 'r', '\0'});
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for (const auto& arg : args) {
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std::vector<char> buffer(arg.begin(), arg.end());
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buffer.push_back('\0');
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storage.push_back(std::move(buffer));
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}
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std::vector<char*> argv;
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for (auto& buffer : storage) argv.push_back(buffer.data());
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try {
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return effector::parseOptions(static_cast<int>(argv.size()), argv.data());
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} catch (const effector::EffectError&) {
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return std::nullopt;
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}
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}
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bool sameBytes(const effector::Image& a, const effector::Image& b) {
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if (a.width() != b.width() || a.height() != b.height()) return false;
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return std::equal(a.data(), a.data() + a.byteSize(), b.data());
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}
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// Alternating black and white columns: any blur along x has to pull these
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// towards mid grey.
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effector::Image stripes(int width, int height) {
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effector::Image image(width, height);
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for (int y = 0; y < height; ++y) {
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auto* row = image.row(y);
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for (int x = 0; x < width; ++x) {
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const std::uint8_t value = (x % 2 == 0) ? 0 : 255;
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row[x * 3 + 0] = row[x * 3 + 1] = row[x * 3 + 2] = value;
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}
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}
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return image;
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}
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effector::Image renderBlur(const std::vector<effector::Image>& sources, int width, int height,
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std::uint64_t seed, const effector::ParamValues& values) {
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effector::BlurEffect effect;
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effector::Rng rng(seed);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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effector::Image renderGrain(const std::vector<effector::Image>& sources, int width, int height,
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std::uint64_t seed, const effector::ParamValues& values) {
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effector::GrainEffect effect;
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effector::Rng rng(seed);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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effector::Image renderMono(const std::vector<effector::Image>& sources, int width, int height,
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std::uint64_t seed, const effector::ParamValues& values) {
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effector::MonochromeEffect effect;
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effector::Rng rng(seed);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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effector::Image renderOverlay(const std::vector<effector::Image>& sources, int width, int height,
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const effector::ParamValues& values) {
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effector::OverlayEffect effect;
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effector::Rng rng(7);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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effector::Image renderText(const std::vector<effector::Image>& sources, int width, int height,
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const effector::ParamValues& values) {
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effector::TextEffect effect;
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effector::Rng rng(7);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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effector::Image renderTiles(const std::vector<effector::Image>& sources, int width, int height,
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std::uint64_t seed, const effector::ParamValues& values) {
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effector::TilesEffect effect;
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effector::Rng rng(seed);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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// The three channels of one pixel, to read a placement off directly.
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std::array<int, 3> pixel(const effector::Image& image, int x, int y) {
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const auto* px = image.row(y) + static_cast<std::size_t>(x) * 3;
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return {px[0], px[1], px[2]};
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}
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bool isRed(const std::array<int, 3>& px) { return px[0] > 200 && px[1] < 60 && px[2] < 60; }
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bool isBlue(const std::array<int, 3>& px) { return px[2] > 200 && px[0] < 60 && px[1] < 60; }
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// A flat field of one colour, to read the channel weighting off directly.
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effector::Image solid(int width, int height, std::uint8_t r, std::uint8_t g, std::uint8_t b) {
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effector::Image image(width, height);
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for (int y = 0; y < height; ++y) {
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auto* row = image.row(y);
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for (int x = 0; x < width; ++x) {
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row[x * 3 + 0] = r;
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row[x * 3 + 1] = g;
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row[x * 3 + 2] = b;
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}
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}
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return image;
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}
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// A flat field of one shade, to measure what the grain does to it.
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effector::Image flat(int width, int height, std::uint8_t shade) {
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effector::Image image(width, height);
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std::fill(image.data(), image.data() + image.byteSize(), shade);
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return image;
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}
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// Renders any registered effect by name with its defaults, overridden by
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// `values`, from a generator seeded with `seed`.
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effector::Image renderNamed(const std::string& name, const std::vector<effector::Image>& sources,
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int width, int height, std::uint64_t seed,
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const effector::ParamValues& values) {
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const auto effect = effector::effectByName(name);
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effector::Rng rng(seed);
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auto merged = effect->defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect->render(sources, width, height, rng, merged);
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}
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effector::Image render(const std::vector<effector::Image>& sources, int width, int height,
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std::uint64_t seed, const effector::ParamValues& values) {
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effector::ScanlinesEffect effect;
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effector::Rng rng(seed);
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auto merged = effect.defaults();
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for (const auto& [key, value] : values) merged[key] = value;
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return effect.render(sources, width, height, rng, merged);
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}
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} // namespace
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int main() {
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using namespace effector;
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std::cout << "rng\n";
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{
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Rng a(42);
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Rng b(42);
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bool identical = true;
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for (int i = 0; i < 1000; ++i) identical = identical && a.next() == b.next();
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check(identical, "same seed yields the same stream");
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Rng c(7);
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bool inBounds = true;
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for (int i = 0; i < 10000; ++i) {
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const long value = c.inRange(-4, 9);
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inBounds = inBounds && value >= -4 && value <= 9;
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}
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check(inBounds, "inRange stays within bounds");
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}
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std::cout << "registry\n";
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{
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check(!effects().empty(), "registry is populated");
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check(effectByName("scanlines")->title() == "Scanlines", "lookup by name");
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bool threw = false;
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try {
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effectByName("nope");
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} catch (const EffectError&) {
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threw = true;
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}
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check(threw, "unknown effect throws");
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// Flags share one namespace, so a key two effects declared would be
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// handed to whichever came first.
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std::set<std::string> keys;
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bool unique = true;
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for (const auto& effect : effects()) {
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for (const auto& spec : effect->params()) unique = keys.insert(spec.key).second && unique;
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}
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check(unique, "no two effects declare the same param key");
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}
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std::cout << "scanlines\n";
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{
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std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90),
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gradient(300, 200, 200)};
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const auto first = render(sources, 800, 600, 1, {{"strip_height", 6L}, {"jitter", 3L}});
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const auto again = render(sources, 800, 600, 1, {{"strip_height", 6L}, {"jitter", 3L}});
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const auto other = render(sources, 800, 600, 2, {{"strip_height", 6L}, {"jitter", 3L}});
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check(first.width() == 800 && first.height() == 600, "canvas has the requested size");
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check(sameBytes(first, again), "same seed reproduces the image");
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check(!sameBytes(first, other), "a different seed changes the image");
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const auto thin = render(sources, 400, 300, 7, {{"strip_height", 1L}});
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check(thin.width() == 400 && thin.height() == 300, "strip height of 1");
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// Canvas wider and taller than the only source: exercises tiling and the
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// clamp of the strip height to the source height.
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std::vector<Image> small = {gradient(300, 200, 5)};
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const auto tiled = render(small, 1000, 700, 9, {{"strip_height", 400L}, {"jitter", 50L}});
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check(tiled.width() == 1000 && tiled.height() == 700, "tiling a narrow source");
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bool tiles = true;
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for (int y = 0; y < tiled.height(); ++y) {
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const auto* row = tiled.row(y);
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for (int c = 0; c < 3; ++c) tiles = tiles && row[c] == row[300 * 3 + c];
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}
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check(tiles, "tiled columns repeat with the source width");
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const auto ordered = render(sources, 500, 500, 3, {{"strip_height", 20L}, {"keep_order", true}});
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check(ordered.height() == 500, "keep_order fills the canvas");
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bool threw = false;
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try {
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render({}, 100, 100, 1, {});
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} catch (const EffectError&) {
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threw = true;
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}
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check(threw, "no sources throws");
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}
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std::cout << "tiles\n";
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{
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std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90),
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gradient(300, 200, 200)};
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for (const std::string layout : {"grid", "brick", "scatter"}) {
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const ParamValues values = {{"tile_layout", layout},
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{"tile_width", 70L},
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{"tile_height", 50L},
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{"tile_jitter", 12L}};
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const auto first = renderTiles(sources, 400, 300, 1, values);
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const auto again = renderTiles(sources, 400, 300, 1, values);
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const auto other = renderTiles(sources, 400, 300, 2, values);
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check(first.width() == 400 && first.height() == 300, layout + " has the requested size");
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check(sameBytes(first, again), layout + ": same seed reproduces the image");
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check(!sameBytes(first, other), layout + ": a different seed changes the image");
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}
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// With no jitter the grid cells line up: the gradient's red channel
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// counts up with x inside a tile and only breaks at a cell boundary.
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const auto aligned = renderTiles(sources, 400, 300, 5,
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{{"tile_layout", std::string("grid")}, {"tile_width", 100L},
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{"tile_height", 100L}});
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bool onlyAtBoundaries = true;
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for (int y = 0; y < aligned.height(); ++y) {
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const auto* row = aligned.row(y);
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for (int x = 1; x < aligned.width(); ++x) {
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const bool breaks = row[x * 3] != ((row[(x - 1) * 3] + 1) & 0xFF);
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if (breaks && x % 100 != 0) onlyAtBoundaries = false;
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}
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}
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check(onlyAtBoundaries, "grid cells break only on the cell boundaries");
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// One source smaller than a single tile: the cut is repeated to fill
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// the cell, so the canvas is covered rather than left black.
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std::vector<Image> small = {gradient(60, 40, 200)};
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const auto covered = renderTiles(small, 500, 400, 9,
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{{"tile_layout", std::string("brick")},
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{"tile_width", 200L},
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{"tile_height", 150L}});
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bool filled = true;
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for (int y = 0; y < covered.height(); ++y) {
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const auto* row = covered.row(y);
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for (int x = 0; x < covered.width(); ++x) filled = filled && row[x * 3 + 2] == 200;
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}
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check(filled, "a source smaller than a tile still covers the canvas");
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const auto tiny = renderTiles(sources, 120, 90, 3,
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{{"tile_width", 1L}, {"tile_height", 1L}});
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check(tiny.width() == 120 && tiny.height() == 90, "tiles one pixel across");
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const auto ordered = renderTiles(sources, 300, 200, 4,
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{{"tile_width", 40L}, {"tile_keep_order", true}});
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check(ordered.height() == 200, "keep_order fills the canvas");
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// A single scattered tile leaves the rest of the canvas to the backdrop.
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const auto sparse = renderTiles(small, 400, 300, 6,
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{{"tile_layout", std::string("scatter")}, {"tile_count", 1L}});
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bool backdrop = true;
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for (int y = 0; y < sparse.height(); ++y) {
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const auto* row = sparse.row(y);
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for (int x = 0; x < sparse.width(); ++x) backdrop = backdrop && row[x * 3 + 2] == 200;
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}
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check(backdrop, "scattered tiles land on a filled backdrop");
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bool threw = false;
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try {
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renderTiles({}, 100, 100, 1, {});
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} catch (const EffectError&) {
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threw = true;
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}
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check(threw, "no sources throws");
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}
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std::cout << "blur\n";
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{
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std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90)};
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const auto first = renderBlur(sources, 400, 300, 4, {{"radius", 10L}});
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const auto again = renderBlur(sources, 400, 300, 4, {{"radius", 10L}});
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const auto other = renderBlur(sources, 400, 300, 11, {{"radius", 10L}});
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check(first.width() == 400 && first.height() == 300, "canvas has the requested size");
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check(sameBytes(first, again), "same seed reproduces the image");
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check(!sameBytes(first, other), "a different seed changes the image");
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// A wide blur over one-pixel stripes has to land near mid grey, and only
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// along the axis it is applied to.
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std::vector<Image> striped = {stripes(200, 100)};
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const auto flattened = renderBlur(striped, 200, 100, 1,
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{{"radius", 8L}, {"direction", std::string("horizontal")}});
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// The clamped edges ramp in over radius * passes pixels on each side.
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bool grey = true;
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for (int x = 32; x < 168; ++x) grey = grey && std::abs(flattened.row(50)[x * 3] - 127) <= 2;
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check(grey, "a horizontal blur evens out vertical stripes");
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const auto untouched = renderBlur(striped, 200, 100, 1,
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{{"radius", 8L}, {"direction", std::string("vertical")}});
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check(untouched.row(50)[0] == 0 && untouched.row(50)[3] == 255,
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"a vertical blur leaves columns alone");
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// Every column is uniform, so a vertical blur must not change anything.
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const auto vertical = renderBlur(striped, 200, 100, 1,
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{{"radius", 4L}, {"passes", 3L}, {"direction", std::string("vertical")}});
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check(sameBytes(untouched, vertical), "repeated vertical passes stay stable");
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// Radius larger than the canvas must clamp rather than read out of bounds.
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const auto tiny = renderBlur(striped, 3, 3, 2, {{"radius", 200L}});
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check(tiny.width() == 3 && tiny.height() == 3, "radius wider than the canvas is clamped");
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const auto pinned = renderBlur(sources, 300, 200, 6, {{"first_source", true}});
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const auto pinnedAgain = renderBlur(sources, 300, 200, 6, {{"first_source", true}});
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check(sameBytes(pinned, pinnedAgain), "first_source is reproducible");
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// Blur declares that it needs no sources, so with none it softens the
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// empty canvas it starts from instead of refusing to run.
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const auto blank = renderBlur({}, 100, 100, 1, {});
|
|
bool allBlack = blank.width() == 100 && blank.height() == 100;
|
|
for (std::size_t i = 0; i < blank.byteSize(); ++i) allBlack = allBlack && blank.data()[i] == 0;
|
|
check(allBlack, "without sources blur renders an empty canvas");
|
|
}
|
|
|
|
std::cout << "grain\n";
|
|
{
|
|
std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90)};
|
|
|
|
const auto first = renderGrain(sources, 400, 300, 4, {});
|
|
const auto again = renderGrain(sources, 400, 300, 4, {});
|
|
const auto other = renderGrain(sources, 400, 300, 11, {});
|
|
check(first.width() == 400 && first.height() == 300, "canvas has the requested size");
|
|
check(sameBytes(first, again), "same seed reproduces the image");
|
|
check(!sameBytes(first, other), "a different seed changes the image");
|
|
|
|
// Mid grey is where the grain is strongest, so it must move, and stay
|
|
// grey while the channels are drawn together.
|
|
std::vector<Image> grey = {flat(200, 100, 128)};
|
|
const auto grained = renderGrain(grey, 200, 100, 3, {{"grain_amount", 0.5}});
|
|
bool moved = false;
|
|
bool neutral = true;
|
|
for (int x = 0; x < 200; ++x) {
|
|
const auto* px = grained.row(50) + x * 3;
|
|
moved = moved || px[0] != 128;
|
|
neutral = neutral && px[0] == px[1] && px[1] == px[2];
|
|
}
|
|
check(moved, "grain moves a flat mid grey");
|
|
check(neutral, "monochrome grain keeps the channels equal");
|
|
|
|
const auto coloured = renderGrain(grey, 200, 100, 3, {{"grain_colour", true}});
|
|
bool split = false;
|
|
for (int x = 0; x < 200; ++x) {
|
|
const auto* px = coloured.row(50) + x * 3;
|
|
split = split || px[0] != px[1] || px[1] != px[2];
|
|
}
|
|
check(split, "coloured grain pulls the channels apart");
|
|
|
|
// With the midtone weighting on, black and white are left alone; with
|
|
// it off the grain lands everywhere.
|
|
const auto blackWeighted = renderGrain({flat(64, 64, 0)}, 64, 64, 2, {});
|
|
bool untouched = true;
|
|
for (std::size_t i = 0; i < blackWeighted.byteSize(); ++i) {
|
|
untouched = untouched && blackWeighted.data()[i] == 0;
|
|
}
|
|
check(untouched, "the midtone weighting leaves black alone");
|
|
|
|
const auto blackFlat =
|
|
renderGrain({flat(64, 64, 0)}, 64, 64, 2, {{"grain_midtones", false}});
|
|
bool lifted = false;
|
|
for (std::size_t i = 0; i < blackFlat.byteSize(); ++i) {
|
|
lifted = lifted || blackFlat.data()[i] != 0;
|
|
}
|
|
check(lifted, "without the weighting grain reaches the shadows");
|
|
|
|
// Zero amount is a pass through, and a grain wider than the canvas must
|
|
// still only read the one cell it has.
|
|
check(sameBytes(renderGrain({flat(32, 32, 128)}, 32, 32, 1, {{"grain_amount", 0.0}}),
|
|
flat(32, 32, 128)),
|
|
"zero amount leaves the image untouched");
|
|
const auto coarse = renderGrain(grey, 40, 30, 7, {{"grain_size", 64L}});
|
|
check(coarse.width() == 40 && coarse.height() == 30,
|
|
"a grain wider than the canvas is clamped");
|
|
|
|
// Like blur, grain needs no sources: with none it grains the empty
|
|
// canvas it starts from instead of refusing to run.
|
|
const auto blank = renderGrain({}, 100, 100, 1, {{"grain_midtones", false}});
|
|
bool speckled = blank.width() == 100 && blank.height() == 100;
|
|
bool any = false;
|
|
for (std::size_t i = 0; i < blank.byteSize(); ++i) any = any || blank.data()[i] != 0;
|
|
check(speckled && any, "without sources grain works on an empty canvas");
|
|
}
|
|
|
|
std::cout << "monochrome\n";
|
|
{
|
|
std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90)};
|
|
|
|
const auto first = renderMono(sources, 400, 300, 4, {});
|
|
const auto again = renderMono(sources, 400, 300, 4, {});
|
|
check(first.width() == 400 && first.height() == 300, "canvas has the requested size");
|
|
check(sameBytes(first, again), "same seed reproduces the image");
|
|
|
|
bool grey = true;
|
|
for (std::size_t i = 0; i + 2 < first.byteSize(); i += 3) {
|
|
grey = grey && first.data()[i] == first.data()[i + 1] &&
|
|
first.data()[i + 1] == first.data()[i + 2];
|
|
}
|
|
check(grey, "every pixel comes out neutral grey");
|
|
|
|
// A pure red field: the luminance weighting keeps little of it, the red
|
|
// weighting nearly all, and the blue weighting almost none.
|
|
std::vector<Image> red = {solid(64, 64, 255, 0, 0)};
|
|
const auto viaLuma = renderMono(red, 64, 64, 1, {});
|
|
const auto viaRed = renderMono(red, 64, 64, 1, {{"mono_weighting", std::string("red")}});
|
|
const auto viaBlue = renderMono(red, 64, 64, 1, {{"mono_weighting", std::string("blue")}});
|
|
check(viaLuma.data()[0] > 40 && viaLuma.data()[0] < 70, "luminance darkens a pure red");
|
|
check(viaRed.data()[0] > 190, "the red weighting keeps a pure red light");
|
|
check(viaBlue.data()[0] < 50, "the blue weighting renders a pure red dark");
|
|
|
|
// Contrast works about mid grey: it leaves that alone and pushes the
|
|
// shades either side of it apart.
|
|
const auto midHard =
|
|
renderMono({solid(32, 32, 128, 128, 128)}, 32, 32, 1, {{"mono_contrast", 2.0}});
|
|
check(midHard.data()[0] >= 127 && midHard.data()[0] <= 129, "contrast pivots on mid grey");
|
|
const auto darkFlat = renderMono({solid(32, 32, 80, 80, 80)}, 32, 32, 1, {});
|
|
const auto darkHard =
|
|
renderMono({solid(32, 32, 80, 80, 80)}, 32, 32, 1, {{"mono_contrast", 2.0}});
|
|
check(darkHard.data()[0] < darkFlat.data()[0], "contrast deepens the shadows");
|
|
|
|
// The toners tint the greys, each in its own direction.
|
|
const auto sepia = renderMono({solid(32, 32, 128, 128, 128)}, 32, 32, 1,
|
|
{{"mono_tone", std::string("sepia")}});
|
|
check(sepia.data()[0] > sepia.data()[1] && sepia.data()[1] > sepia.data()[2],
|
|
"sepia warms the greys");
|
|
const auto cyan = renderMono({solid(32, 32, 128, 128, 128)}, 32, 32, 1,
|
|
{{"mono_tone", std::string("cyanotype")}});
|
|
check(cyan.data()[2] > cyan.data()[1] && cyan.data()[1] > cyan.data()[0],
|
|
"the cyanotype toner cools them");
|
|
|
|
// Strength mixes back towards the colour input: zero is a pass through,
|
|
// half sits between the two.
|
|
check(sameBytes(
|
|
renderMono({solid(32, 32, 200, 40, 10)}, 32, 32, 1, {{"mono_strength", 0.0}}),
|
|
solid(32, 32, 200, 40, 10)),
|
|
"zero strength leaves the colours untouched");
|
|
const auto half =
|
|
renderMono({solid(32, 32, 200, 40, 10)}, 32, 32, 1, {{"mono_strength", 0.5}});
|
|
const auto full = renderMono({solid(32, 32, 200, 40, 10)}, 32, 32, 1, {});
|
|
check(half.data()[0] > full.data()[0] && half.data()[0] < 200,
|
|
"half strength sits between the grey and the colour");
|
|
|
|
// Like blur and grain it needs no sources: with none it converts the
|
|
// empty canvas, which stays black.
|
|
const auto blank = renderMono({}, 50, 50, 1, {});
|
|
bool allBlack = blank.width() == 50 && blank.height() == 50;
|
|
for (std::size_t i = 0; i < blank.byteSize(); ++i) {
|
|
allBlack = allBlack && blank.data()[i] == 0;
|
|
}
|
|
check(allBlack, "without sources monochrome renders an empty canvas");
|
|
}
|
|
|
|
std::cout << "overlay\n";
|
|
{
|
|
const auto dir = std::filesystem::temp_directory_path() / "effector_test_overlay";
|
|
std::filesystem::create_directories(dir);
|
|
const auto logo = (dir / "logo.png").string();
|
|
solid(40, 20, 255, 0, 0).save(logo); // wider than it is tall, to tell the fittings apart
|
|
|
|
const std::vector<Image> blue = {solid(100, 100, 0, 0, 255)};
|
|
const ParamValues at = {{"overlay_image", logo}, {"overlay_fit", std::string("original")}};
|
|
|
|
const auto centred = renderOverlay(blue, 100, 100, at);
|
|
check(isRed(pixel(centred, 50, 50)), "the overlay lands in the middle of the canvas");
|
|
check(isBlue(pixel(centred, 2, 2)), "and leaves the rest of the input alone");
|
|
check(isRed(pixel(centred, 30, 40)) && isBlue(pixel(centred, 29, 40)),
|
|
"centred, a 40x20 image starts 30 pixels in");
|
|
|
|
ParamValues corner = at;
|
|
corner["overlay_center"] = false;
|
|
const auto topLeft = renderOverlay(blue, 100, 100, corner);
|
|
check(isRed(pixel(topLeft, 0, 0)) && isBlue(pixel(topLeft, 41, 0)),
|
|
"without centring it sits in the top left corner");
|
|
|
|
ParamValues nudged = corner;
|
|
nudged["overlay_offset_x"] = 10L;
|
|
nudged["overlay_offset_y"] = 5L;
|
|
const auto moved = renderOverlay(blue, 100, 100, nudged);
|
|
check(isRed(pixel(moved, 10, 5)) && isBlue(pixel(moved, 9, 5)) && isBlue(pixel(moved, 10, 4)),
|
|
"the offset moves it right and down");
|
|
|
|
ParamValues back = at;
|
|
back["overlay_offset_x"] = -25L;
|
|
const auto half = renderOverlay(blue, 100, 100, back);
|
|
check(isRed(pixel(half, 5, 50)) && isBlue(pixel(half, 96, 50)),
|
|
"a negative offset moves it off the left edge, and it is clipped");
|
|
|
|
// Fitting: fit shows the whole image and keeps its proportions, so a
|
|
// 40x20 logo becomes 100x50 with a band of input above and below; fill
|
|
// and stretch and tile all cover the canvas.
|
|
ParamValues fitted = at;
|
|
fitted["overlay_fit"] = std::string("fit");
|
|
const auto fit = renderOverlay(blue, 100, 100, fitted);
|
|
check(isBlue(pixel(fit, 50, 10)) && isRed(pixel(fit, 50, 50)) && isRed(pixel(fit, 1, 50)),
|
|
"fit shows the whole image, in its own proportions");
|
|
|
|
for (const char* mode : {"fill", "stretch", "tile"}) {
|
|
ParamValues covering = at;
|
|
covering["overlay_fit"] = std::string(mode);
|
|
const auto image = renderOverlay(blue, 100, 100, covering);
|
|
bool everywhere = true;
|
|
for (int y = 0; y < 100; y += 7) {
|
|
for (int x = 0; x < 100; x += 7) everywhere = everywhere && isRed(pixel(image, x, y));
|
|
}
|
|
check(everywhere, std::string(mode) + " covers the whole canvas");
|
|
}
|
|
|
|
// Scale resizes what the fitting worked out: half of 100x50 is 50x25.
|
|
ParamValues scaled = fitted;
|
|
scaled["overlay_scale"] = 0.5;
|
|
const auto smaller = renderOverlay(blue, 100, 100, scaled);
|
|
check(isRed(pixel(smaller, 50, 50)) && isBlue(pixel(smaller, 20, 50)),
|
|
"the scale shrinks the fitted image about its centre");
|
|
|
|
// Opacity mixes over the input rather than replacing it.
|
|
ParamValues faint = at;
|
|
faint["overlay_opacity"] = 0.5;
|
|
const auto mixed = pixel(renderOverlay(blue, 100, 100, faint), 50, 50);
|
|
check(mixed[0] > 100 && mixed[0] < 155 && mixed[2] > 100 && mixed[2] < 155,
|
|
"half opacity sits between the overlay and the input");
|
|
check(sameBytes(renderOverlay(blue, 100, 100, {{"overlay_image", logo},
|
|
{"overlay_opacity", 0.0}}),
|
|
solid(100, 100, 0, 0, 255)),
|
|
"zero opacity leaves the input untouched");
|
|
|
|
// Halo: none by default, a shadow moved by its offset, a glow all round.
|
|
check(sameBytes(renderOverlay(blue, 100, 100, at),
|
|
renderOverlay(blue, 100, 100, [&] {
|
|
ParamValues none = at;
|
|
none["overlay_halo"] = std::string("none");
|
|
return none;
|
|
}())),
|
|
"no halo is the default");
|
|
ParamValues shadowed = at;
|
|
shadowed["overlay_halo"] = std::string("shadow");
|
|
shadowed["overlay_halo_size"] = 0L;
|
|
shadowed["overlay_halo_opacity"] = 1.0;
|
|
shadowed["overlay_shadow_x"] = 5L;
|
|
shadowed["overlay_shadow_y"] = 5L;
|
|
const auto shadow = renderOverlay(blue, 100, 100, shadowed);
|
|
const auto dark = pixel(shadow, 72, 62); // past the logo's bottom right corner (70, 60)
|
|
check(dark[0] == 0 && dark[1] == 0 && dark[2] == 0,
|
|
"a hard shadow is cast down and right by its offset");
|
|
check(isBlue(pixel(shadow, 28, 50)) && isRed(pixel(shadow, 50, 50)),
|
|
"it leaves the other side alone and stays beneath the image");
|
|
shadowed["overlay_halo_size"] = 12L;
|
|
const auto soft = pixel(renderOverlay(blue, 100, 100, shadowed), 78, 50);
|
|
check(soft[2] > 0 && soft[2] < 255, "a soft shadow fades out past the edge");
|
|
|
|
ParamValues glowing = at;
|
|
glowing["overlay_halo"] = std::string("glow");
|
|
const auto glow = renderOverlay(blue, 100, 100, glowing);
|
|
const auto left = pixel(glow, 27, 50);
|
|
const auto right = pixel(glow, 72, 50);
|
|
check(left[0] > 0 && left[0] == right[0] && left[1] == right[1],
|
|
"a glow lightens both sides alike");
|
|
check(isBlue(pixel(glow, 2, 2)), "and fades out before the far corners");
|
|
glowing["overlay_halo_spread"] = 0.5;
|
|
check(pixel(renderOverlay(blue, 100, 100, glowing), 27, 50)[0] > left[0],
|
|
"spread strengthens the halo near the edge");
|
|
|
|
ParamValues offCanvas = shadowed;
|
|
offCanvas["overlay_halo_size"] = 0L;
|
|
offCanvas["overlay_offset_x"] = -70L; // the logo ends just left of the canvas
|
|
offCanvas["overlay_shadow_x"] = 20L;
|
|
const auto cast = pixel(renderOverlay(blue, 100, 100, offCanvas), 5, 50);
|
|
check(cast[2] == 0, "an image off the canvas still casts its shadow onto it");
|
|
|
|
// No image chosen is the state the interface starts in: a pass through.
|
|
check(sameBytes(renderOverlay(blue, 100, 100, {}), solid(100, 100, 0, 0, 255)),
|
|
"with no image chosen the stage passes its input through");
|
|
|
|
// Like blur and monochrome it needs no sources of its own.
|
|
check(!OverlayEffect().needsSources(), "the overlay can lead a chain");
|
|
const auto alone = renderOverlay({}, 60, 40, {{"overlay_image", logo},
|
|
{"overlay_fit", std::string("stretch")}});
|
|
check(alone.width() == 60 && isRed(pixel(alone, 30, 20)),
|
|
"without sources it draws on an empty canvas");
|
|
|
|
bool threw = false;
|
|
try {
|
|
renderOverlay(blue, 100, 100, {{"overlay_image", std::string("/nope/missing.png")}});
|
|
} catch (const EffectError&) {
|
|
threw = true;
|
|
}
|
|
check(threw, "a missing overlay image is reported");
|
|
|
|
// The path travels with the project, written relative to its folder.
|
|
Project project;
|
|
project.width = 100;
|
|
project.height = 100;
|
|
project.stages.push_back({effectByName("overlay"), {{"overlay_image", logo}}});
|
|
const auto json = projectToJson(project, dir.string());
|
|
check(json.find("\"logo.png\"") != std::string::npos,
|
|
"an overlay image inside the project folder is written relative");
|
|
const auto reread = projectFromJson(json, dir.string());
|
|
check(paramText(reread.stages[0].values, "overlay_image", "") == logo,
|
|
"and comes back as the same file");
|
|
|
|
std::filesystem::remove_all(dir);
|
|
}
|
|
|
|
std::cout << "colour params\n";
|
|
{
|
|
std::uint8_t rgb[3] = {0, 0, 0};
|
|
check(parseColor("#ff8800", rgb) && rgb[0] == 255 && rgb[1] == 136 && rgb[2] == 0,
|
|
"a six digit colour is read");
|
|
check(parseColor("00FF80", rgb) && rgb[1] == 255 && rgb[2] == 128,
|
|
"the hash is optional and the case does not matter");
|
|
check(parseColor("#f80", rgb) && rgb[0] == 255 && rgb[1] == 136 && rgb[2] == 0,
|
|
"the three digit shorthand doubles each digit");
|
|
check(!parseColor("#12345", rgb) && !parseColor("#gg0000", rgb) && !parseColor("", rgb),
|
|
"anything else is refused");
|
|
const std::uint8_t written[3] = {1, 171, 255};
|
|
check(formatColor(written) == "#01abff", "a colour is written back as six digits");
|
|
|
|
// A value that does not parse falls back rather than painting
|
|
// something arbitrary.
|
|
std::uint8_t fallback[3] = {0, 0, 0};
|
|
paramColor({{"c", std::string("nonsense")}}, "c", "#102030", fallback);
|
|
check(fallback[0] == 0x10 && fallback[1] == 0x20 && fallback[2] == 0x30,
|
|
"a malformed colour keeps the default");
|
|
|
|
// Both new types survive a project round trip, and the reader drops a
|
|
// colour it cannot read exactly as it drops an unknown choice.
|
|
Project project;
|
|
project.width = 64;
|
|
project.height = 64;
|
|
project.stages.push_back({effectByName("text"),
|
|
{{"text", std::string("a \"quoted\" line")},
|
|
{"text_color", std::string("#ff0080")}}});
|
|
const auto reread = projectFromJson(projectToJson(project, ""), "");
|
|
check(paramText(reread.stages[0].values, "text", "") == "a \"quoted\" line",
|
|
"text with quotes in it survives a project round trip");
|
|
check(paramText(reread.stages[0].values, "text_color", "") == "#ff0080",
|
|
"and so does a colour");
|
|
const auto broken = projectFromJson(
|
|
"{\"chain\": [{\"effect\": \"text\", \"params\": {\"text_color\": \"#zz\"}}]}", "");
|
|
check(paramText(broken.stages[0].values, "text_color", "") == "#ffffff",
|
|
"a colour a project cannot be read keeps the effect's default");
|
|
|
|
// The command line refuses one too, rather than drawing black.
|
|
bool threw = false;
|
|
try {
|
|
const char* argv[] = {"effector", "-e", "text", "--text-color", "purple"};
|
|
parseOptions(5, const_cast<char**>(argv));
|
|
} catch (const EffectError&) {
|
|
threw = true;
|
|
}
|
|
check(threw, "an unparseable colour on the command line is reported");
|
|
}
|
|
|
|
std::cout << "text\n";
|
|
{
|
|
const std::vector<Image> blue = {solid(200, 120, 0, 0, 255)};
|
|
const ParamValues plain = {{"text", std::string("Hi")},
|
|
{"font_size", 60.0},
|
|
{"text_color", std::string("#ff0000")}};
|
|
|
|
// Counting the red pixels is how every placement below is read: the
|
|
// exact glyphs belong to whatever font this machine has.
|
|
const auto countRed = [](const Image& image, int x0, int y0, int x1, int y1) {
|
|
int found = 0;
|
|
for (int y = y0; y < y1; ++y) {
|
|
for (int x = x0; x < x1; ++x) {
|
|
if (isRed(pixel(image, x, y))) ++found;
|
|
}
|
|
}
|
|
return found;
|
|
};
|
|
|
|
const auto centred = renderText(blue, 200, 120, plain);
|
|
check(countRed(centred, 60, 30, 140, 90) > 0, "the text lands in the middle of the canvas");
|
|
check(countRed(centred, 0, 0, 200, 120) == countRed(centred, 50, 20, 150, 100),
|
|
"and nothing is written outside it");
|
|
|
|
ParamValues corner = plain;
|
|
corner["text_center"] = false;
|
|
const auto topLeft = renderText(blue, 200, 120, corner);
|
|
check(countRed(topLeft, 0, 0, 100, 60) > 0 && countRed(topLeft, 100, 60, 200, 120) == 0,
|
|
"uncentred it starts at the top left corner");
|
|
|
|
ParamValues nudged = corner;
|
|
nudged["text_offset_x"] = 100L;
|
|
nudged["text_offset_y"] = 60L;
|
|
const auto moved = renderText(blue, 200, 120, nudged);
|
|
check(countRed(moved, 100, 60, 200, 120) > 0 && countRed(moved, 0, 0, 100, 60) == 0,
|
|
"the offset moves it down and to the right");
|
|
|
|
// A wide line turned a quarter stands upright: it reaches above and
|
|
// below the band it filled unturned, and no longer out to the sides.
|
|
ParamValues wide = plain;
|
|
wide["text"] = std::string("HHHHHH");
|
|
wide["font_size"] = 40.0;
|
|
const auto flat = renderText(blue, 200, 120, wide);
|
|
ParamValues turned = wide;
|
|
turned["text_rotation"] = 90.0;
|
|
const auto upright = renderText(blue, 200, 120, turned);
|
|
check(countRed(flat, 0, 0, 200, 25) == 0 && countRed(upright, 0, 0, 200, 25) > 0,
|
|
"rotation turns the text about its centre");
|
|
check(countRed(flat, 0, 0, 50, 120) > 0 && countRed(upright, 0, 0, 50, 120) == 0,
|
|
"and takes it in from the sides");
|
|
|
|
// Weight and size are the two knobs the glyphs themselves answer to: a
|
|
// bolder or a larger setting covers strictly more of the canvas.
|
|
ParamValues bold = plain;
|
|
bold["font_weight"] = std::string("heavy");
|
|
check(countRed(renderText(blue, 200, 120, bold), 0, 0, 200, 120) >
|
|
countRed(centred, 0, 0, 200, 120),
|
|
"a heavier weight inks more pixels than a normal one");
|
|
ParamValues large = plain;
|
|
large["font_size"] = 90.0;
|
|
check(countRed(renderText(blue, 200, 120, large), 0, 0, 200, 120) >
|
|
countRed(centred, 0, 0, 200, 120),
|
|
"and so does a larger size");
|
|
|
|
// The box is drawn under the text, in a colour or from a picture.
|
|
ParamValues boxed = plain;
|
|
boxed["text_box"] = std::string("colour");
|
|
boxed["box_color"] = std::string("#00ff00");
|
|
boxed["box_padding"] = 10L;
|
|
const auto onBox = renderText(blue, 200, 120, boxed);
|
|
const auto corner_px = pixel(onBox, 2, 2);
|
|
check(corner_px[2] > 200, "the box leaves the canvas outside it alone");
|
|
bool greenSomewhere = false;
|
|
for (int y = 0; y < 120 && !greenSomewhere; ++y) {
|
|
for (int x = 0; x < 200; ++x) {
|
|
const auto px = pixel(onBox, x, y);
|
|
if (px[1] > 200 && px[0] < 60 && px[2] < 60) greenSomewhere = true;
|
|
}
|
|
}
|
|
check(greenSomewhere, "and is filled with the colour it was given");
|
|
check(countRed(onBox, 0, 0, 200, 120) > 0, "the text is drawn over the box");
|
|
|
|
ParamValues faint = boxed;
|
|
faint["box_opacity"] = 0.5;
|
|
const auto half = renderText(blue, 200, 120, faint);
|
|
bool mixed = false;
|
|
for (int y = 0; y < 120 && !mixed; ++y) {
|
|
for (int x = 0; x < 200; ++x) {
|
|
const auto px = pixel(half, x, y);
|
|
// Half the green box over the blue input, and neither of them.
|
|
if (px[1] > 100 && px[1] < 200 && px[2] > 100 && px[2] < 200) mixed = true;
|
|
}
|
|
}
|
|
check(mixed, "half a box opacity sits between the box and the input");
|
|
|
|
const auto dir = std::filesystem::temp_directory_path() / "effector_test_text";
|
|
std::filesystem::create_directories(dir);
|
|
const auto picture = (dir / "fill.png").string();
|
|
solid(40, 40, 255, 255, 0).save(picture);
|
|
ParamValues fromPicture = boxed;
|
|
fromPicture["text_box"] = std::string("image");
|
|
fromPicture["box_image"] = picture;
|
|
const auto onPicture = renderText(blue, 200, 120, fromPicture);
|
|
bool yellowSomewhere = false;
|
|
for (int y = 0; y < 120 && !yellowSomewhere; ++y) {
|
|
for (int x = 0; x < 200; ++x) {
|
|
const auto px = pixel(onPicture, x, y);
|
|
if (px[0] > 200 && px[1] > 200 && px[2] < 60) yellowSomewhere = true;
|
|
}
|
|
}
|
|
check(yellowSomewhere, "a box picture fills the box");
|
|
check(pixel(onPicture, 2, 2)[2] > 200, "and stops at its edge");
|
|
|
|
bool threw = false;
|
|
try {
|
|
ParamValues missing = fromPicture;
|
|
missing["box_image"] = std::string("/nope/missing.png");
|
|
renderText(blue, 200, 120, missing);
|
|
} catch (const EffectError&) {
|
|
threw = true;
|
|
}
|
|
check(threw, "a missing box picture is reported");
|
|
|
|
// Nothing to draw is the state the interface starts in: a pass through.
|
|
check(sameBytes(renderText(blue, 200, 120, {{"text", std::string("")}}),
|
|
solid(200, 120, 0, 0, 255)),
|
|
"with no text typed the stage passes its input through");
|
|
check(sameBytes(renderText(blue, 200, 120, {{"text", std::string("Hi")},
|
|
{"text_opacity", 0.0}}),
|
|
solid(200, 120, 0, 0, 255)),
|
|
"zero opacity leaves the input untouched");
|
|
|
|
// Like blur and overlay it needs no sources of its own, and the same
|
|
// settings render the same bytes twice over.
|
|
check(!TextEffect().needsSources(), "text can lead a chain");
|
|
|
|
// A text stage is named after its words, on one line.
|
|
check(TextEffect().label({{"text", std::string(" Two\nlines ")}}) == "Text (Two lines)",
|
|
"a text stage is labelled with its words");
|
|
check(TextEffect().label({{"text", std::string(" \n")}}) == "Text",
|
|
"a text stage with no words is labelled with the title alone");
|
|
check(effectByName("blur")->label({}) == "Blur", "other effects are labelled with their title");
|
|
const auto alone = renderText({}, 200, 120, plain);
|
|
check(alone.width() == 200 && countRed(alone, 0, 0, 200, 120) > 0,
|
|
"without sources it draws on an empty canvas");
|
|
check(sameBytes(renderText(blue, 200, 120, boxed), onBox),
|
|
"the same settings render the same bytes");
|
|
|
|
std::filesystem::remove_all(dir);
|
|
}
|
|
|
|
std::cout << "text styles\n";
|
|
{
|
|
const std::vector<Image> blue = {solid(200, 120, 0, 0, 255)};
|
|
const auto countRed = [](const Image& image) {
|
|
int found = 0;
|
|
for (int y = 0; y < image.height(); ++y) {
|
|
for (int x = 0; x < image.width(); ++x) {
|
|
if (isRed(pixel(image, x, y))) ++found;
|
|
}
|
|
}
|
|
return found;
|
|
};
|
|
|
|
const auto specs = styleSpecs("text");
|
|
const auto carries = [&specs](const std::string& key) {
|
|
return std::any_of(specs.begin(), specs.end(),
|
|
[&key](const ParamSpec& spec) { return spec.key == key; });
|
|
};
|
|
check(specs.size() == 11, "a text style carries eleven params");
|
|
check(carries("font_family") && carries("font_weight") && carries("font_italic") &&
|
|
carries("font_size") && carries("text_color") && carries("text_align") &&
|
|
carries("text_opacity") && carries("text_box") && carries("box_color") &&
|
|
carries("box_padding") && carries("box_opacity"),
|
|
"the look is what it carries");
|
|
check(!carries("text") && !carries("text_wrap") && !carries("box_image") &&
|
|
!carries("text_center") && !carries("text_offset_x") && !carries("text_offset_y") &&
|
|
!carries("text_rotation"),
|
|
"the words and the placement stay on the stage");
|
|
check(styleSpecs("").empty() && styleSpecs("nosuchkind").empty(),
|
|
"a kind no effect claims carries nothing");
|
|
check(paramDouble(styleDefaults("text"), "font_size", 0.0) == 96.0 &&
|
|
styleDefaults("text").size() == specs.size(),
|
|
"a fresh style starts at the defaults the effect declares");
|
|
|
|
StyleSet styles = {{"text", "Title", styleDefaults("text")}};
|
|
styles[0].values["font_size"] = 40.0;
|
|
styles[0].values["text_color"] = std::string("#ff0000");
|
|
check(findStyle(styles, "text", "Title") != nullptr &&
|
|
findStyle(styles, "text", "Caption") == nullptr &&
|
|
findStyle(styles, "other", "Title") == nullptr,
|
|
"a style is found by its kind and its name");
|
|
|
|
const ChainStage own{effectByName("text"),
|
|
{{"text", std::string("Hi")},
|
|
{"font_size", 12.0},
|
|
{"text_color", std::string("#ff0000")}},
|
|
true,
|
|
""};
|
|
ChainStage follows = own;
|
|
follows.style = "Title";
|
|
|
|
check(paramDouble(stageValues(own, styles), "font_size", 0.0) == 12.0,
|
|
"a stage on its own keeps the settings it was given");
|
|
check(paramDouble(stageValues(follows, styles), "font_size", 0.0) == 40.0,
|
|
"a stage following a style takes the style's");
|
|
check(paramText(stageValues(follows, styles), "text", "") == "Hi",
|
|
"and keeps its own words either way");
|
|
|
|
Rng ownRng(3);
|
|
Rng followRng(3);
|
|
const auto small = renderChain({own}, blue, 200, 120, ownRng, styles);
|
|
const auto large = renderChain({follows}, blue, 200, 120, followRng, styles);
|
|
check(countRed(small) > 0 && countRed(large) > countRed(small),
|
|
"the style is what actually reaches the render");
|
|
|
|
// The whole point: two stages, one style, one look in two places.
|
|
ChainStage left = follows;
|
|
left.values["text_offset_x"] = -40L;
|
|
ChainStage right = follows;
|
|
right.values["text_offset_x"] = 40L;
|
|
Rng leftRng(3);
|
|
Rng rightRng(3);
|
|
const auto leftImage = renderChain({left}, blue, 200, 120, leftRng, styles);
|
|
const auto rightImage = renderChain({right}, blue, 200, 120, rightRng, styles);
|
|
check(countRed(leftImage) == countRed(large) && countRed(rightImage) == countRed(large),
|
|
"two stages following one style ink the same glyphs");
|
|
check(!sameBytes(leftImage, rightImage), "each in its own place");
|
|
|
|
StyleSet edited = styles;
|
|
edited[0].values["font_size"] = 20.0;
|
|
Rng editedLeft(3);
|
|
Rng editedRight(3);
|
|
const auto afterLeft = renderChain({left}, blue, 200, 120, editedLeft, edited);
|
|
const auto afterRight = renderChain({right}, blue, 200, 120, editedRight, edited);
|
|
check(countRed(afterLeft) < countRed(leftImage) &&
|
|
countRed(afterRight) < countRed(rightImage) &&
|
|
countRed(afterLeft) == countRed(afterRight),
|
|
"editing the style moves every stage that follows it");
|
|
|
|
ChainStage missing = follows;
|
|
missing.style = "Nowhere";
|
|
Rng missingRng(3);
|
|
Rng bareRng(3);
|
|
check(sameBytes(renderChain({missing}, blue, 200, 120, missingRng, styles),
|
|
renderChain({own}, blue, 200, 120, bareRng)),
|
|
"naming a style that is not there renders as standing alone");
|
|
|
|
Rng noStyleRng(3);
|
|
Rng noPoolRng(3);
|
|
check(sameBytes(renderChain({follows}, blue, 200, 120, noStyleRng, {}),
|
|
renderChain({own}, blue, 200, 120, noPoolRng)),
|
|
"and so does a chain handed no styles at all");
|
|
}
|
|
|
|
std::cout << "chaos transforms\n";
|
|
{
|
|
const std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90)};
|
|
const std::vector<Image> input = {gradient(400, 300, 40)};
|
|
|
|
// What every one of them must do, and what switches each one off.
|
|
const std::vector<std::pair<std::string, ParamValues>> transforms = {
|
|
{"slitshift", {{"shift_max", 0L}}},
|
|
{"channelsplit", {{"split_amount", 0L}}},
|
|
{"pixelsort", {{"sort_line_chance", 0.0}}},
|
|
{"corrupt", {{"corrupt_rate", 0.0}}},
|
|
{"shatter",
|
|
{{"shatter_displace", 0L}, {"shatter_rotate", 0.0}, {"shatter_zoom", 0.0},
|
|
{"shatter_crack_width", 0L}}},
|
|
{"warp", {{"warp_strength", 0L}}},
|
|
{"bitcrush", {{"crush_coverage", 0.0}}},
|
|
{"feedback", {{"echo_fade", 0.0}}},
|
|
};
|
|
for (const auto& [name, off] : transforms) {
|
|
check(!effectByName(name)->needsSources(), name + " needs no source images");
|
|
|
|
const auto first = renderNamed(name, sources, 400, 300, 4, {});
|
|
const auto again = renderNamed(name, sources, 400, 300, 4, {});
|
|
const auto other = renderNamed(name, sources, 400, 300, 11, {});
|
|
check(first.width() == 400 && first.height() == 300,
|
|
name + " renders the requested size");
|
|
check(sameBytes(first, again), name + " reproduces itself from a seed");
|
|
check(!sameBytes(first, other), name + " changes with the seed");
|
|
check(!sameBytes(renderNamed(name, input, 400, 300, 4, {}), input[0]),
|
|
name + " changes its input");
|
|
check(sameBytes(renderNamed(name, input, 400, 300, 4, off), input[0]),
|
|
name + " switched right down leaves its input alone");
|
|
|
|
const auto blank = renderNamed(name, {}, 120, 80, 1, {});
|
|
check(blank.width() == 120 && blank.height() == 80,
|
|
name + " renders without sources");
|
|
|
|
ChainStage scanlines{effectByName("scanlines"), {{"strip_height", 6L}}};
|
|
ChainStage stage{effectByName(name), {}};
|
|
Rng a(9);
|
|
Rng b(9);
|
|
check(sameBytes(renderChain({scanlines, stage}, sources, 300, 200, a),
|
|
renderChain({scanlines, stage}, sources, 300, 200, b)),
|
|
name + " cascades reproducibly");
|
|
check(!chainNeedsSources({stage, scanlines}, false),
|
|
"a chain led by " + name + " needs no sources");
|
|
|
|
// A canvas one pixel wide or high must not trip any of them up.
|
|
check(renderNamed(name, {}, 1, 1, 2, {}).width() == 1 &&
|
|
renderNamed(name, input, 1, 57, 2, {}).height() == 57 &&
|
|
renderNamed(name, input, 57, 1, 2, {}).width() == 57,
|
|
name + " copes with a sliver of a canvas");
|
|
}
|
|
|
|
// Wrapped slit shifts only rotate each row, so every row keeps its
|
|
// pixels, just not their places.
|
|
const auto wrapped = renderNamed("slitshift", input, 400, 300, 5, {{"shift_bands", 200L}});
|
|
bool rotated = true;
|
|
for (int y = 0; y < 300; ++y) {
|
|
std::vector<std::uint8_t> before(input[0].row(y), input[0].row(y) + 1200);
|
|
std::vector<std::uint8_t> after(wrapped.row(y), wrapped.row(y) + 1200);
|
|
std::sort(before.begin(), before.end());
|
|
std::sort(after.begin(), after.end());
|
|
rotated = rotated && before == after;
|
|
}
|
|
check(rotated, "a wrapped slit shift keeps every row's pixels");
|
|
const auto upright = renderNamed("slitshift", input, 400, 300, 5,
|
|
{{"shift_axis", std::string("vertical")}});
|
|
check(!sameBytes(upright, wrapped), "the vertical axis tears columns instead");
|
|
|
|
// Moving a plane of one colour moves nothing that can be seen.
|
|
const auto split = renderNamed("channelsplit", {solid(80, 60, 200, 90, 30)}, 80, 60, 3,
|
|
{{"split_mode", std::string("per_band")},
|
|
{"split_band_height", 7L}});
|
|
check(sameBytes(split, solid(80, 60, 200, 90, 30)), "a channel split keeps a flat colour");
|
|
const auto rc = renderNamed("channelsplit", input, 400, 300, 3,
|
|
{{"split_channels", std::string("red_cyan")}});
|
|
check(pixel(rc, 200, 150)[2] == pixel(input[0], 200, 150)[2],
|
|
"red_cyan leaves blue where a flat plane has it");
|
|
|
|
// With the thresholds wide open every row comes out sorted.
|
|
const auto sorted = renderNamed("pixelsort", {stripes(64, 16)}, 64, 16, 1,
|
|
{{"sort_low", 0.0}, {"sort_high", 1.0}});
|
|
bool ordered = true;
|
|
for (int y = 0; y < 16; ++y) {
|
|
for (int x = 1; x < 64; ++x) ordered = ordered && pixel(sorted, x - 1, y)[0] <= pixel(sorted, x, y)[0];
|
|
}
|
|
check(ordered, "an open pixel sort orders every row");
|
|
const auto downward = renderNamed("pixelsort", {stripes(64, 16)}, 64, 16, 1,
|
|
{{"sort_low", 0.0}, {"sort_high", 1.0},
|
|
{"sort_direction", std::string("vertical")}});
|
|
check(sameBytes(downward, stripes(64, 16)), "sorting uniform columns changes nothing");
|
|
|
|
// Every block repeated is the first block smeared across the row.
|
|
const auto smeared = renderNamed("corrupt", input, 64, 32, 2,
|
|
{{"corrupt_rate", 1.0},
|
|
{"corrupt_block", 16L},
|
|
{"corrupt_kinds", std::string("repeat")}});
|
|
bool periodic = true;
|
|
for (int y = 0; y < 32; ++y) {
|
|
for (int x = 16; x < 64; ++x) periodic = periodic && pixel(smeared, x, y) == pixel(smeared, x - 16, y);
|
|
}
|
|
check(periodic, "repeated blocks copy the block to their left");
|
|
const auto bled = renderNamed("corrupt", input, 400, 300, 2,
|
|
{{"corrupt_rate", 0.02}, {"corrupt_bleed", true}});
|
|
check(!sameBytes(bled, renderNamed("corrupt", input, 400, 300, 2, {{"corrupt_rate", 0.02}})),
|
|
"bleeding carries the damage further");
|
|
|
|
const auto cracked = renderNamed("shatter", {flat(200, 150, 128)}, 200, 150, 6,
|
|
{{"shatter_crack_colour", std::string("#ff0000")}});
|
|
bool red = false;
|
|
for (int y = 0; y < 150; ++y) {
|
|
for (int x = 0; x < 200; ++x) red = red || isRed(pixel(cracked, x, y));
|
|
}
|
|
check(red, "shatter draws its cracks in the crack colour");
|
|
|
|
check(!sameBytes(renderNamed("warp", input, 400, 300, 4, {{"warp_mode", std::string("swirl")}}),
|
|
renderNamed("warp", input, 400, 300, 4, {})),
|
|
"swirl flows differently from a plain push");
|
|
|
|
const auto poster = renderNamed("bitcrush", input, 400, 300, 3,
|
|
{{"crush_op", std::string("posterize")},
|
|
{"crush_coverage", 1.0}});
|
|
bool coarse = true;
|
|
for (std::size_t i = 0; i < poster.byteSize(); ++i) coarse = coarse && poster.data()[i] % 8 == 0;
|
|
check(coarse, "posterising three bits leaves multiples of eight");
|
|
const auto swapped = renderNamed("bitcrush", {solid(40, 40, 250, 120, 5)}, 40, 40, 3,
|
|
{{"crush_op", std::string("channel_swap")},
|
|
{"crush_coverage", 1.0}});
|
|
check(pixel(swapped, 20, 20) != std::array<int, 3>{250, 120, 5},
|
|
"a channel swap never leaves the order as it was");
|
|
|
|
// A shrunk, fully opaque echo lands the image's corner inside the
|
|
// canvas, while the border outside every echo stays the input's.
|
|
const auto tunnel = renderNamed("feedback", input, 400, 300, 1,
|
|
{{"echo_scale", 0.5}, {"echo_rotate", 0.0},
|
|
{"echo_drift", 0L}, {"echo_fade", 1.0}});
|
|
check(pixel(tunnel, 0, 0) == pixel(input[0], 0, 0), "the border outside the echoes is the input");
|
|
// Halfway to the corner reads the corner of the image at half size.
|
|
const auto near = pixel(tunnel, 100, 75);
|
|
check(std::abs(near[0] - pixel(input[0], 0, 0)[0]) < 4 &&
|
|
std::abs(near[1] - pixel(input[0], 0, 0)[1]) < 4,
|
|
"the echoes nest inside it");
|
|
}
|
|
|
|
std::cout << "chain\n";
|
|
{
|
|
std::vector<Image> sources = {gradient(1200, 800, 10), gradient(640, 480, 90)};
|
|
|
|
ChainStage scanlines{effectByName("scanlines"), {{"strip_height", 6L}}};
|
|
ChainStage blur{effectByName("blur"), {{"radius", 6L}}};
|
|
|
|
Rng single(5);
|
|
const auto direct = renderChain({scanlines}, sources, 400, 300, single);
|
|
const auto alone = render(sources, 400, 300, 5, {{"strip_height", 6L}});
|
|
check(sameBytes(direct, alone), "a one stage chain matches the effect on its own");
|
|
|
|
Rng a(5);
|
|
Rng b(5);
|
|
const auto cascaded = renderChain({scanlines, blur}, sources, 400, 300, a);
|
|
const auto again = renderChain({scanlines, blur}, sources, 400, 300, b);
|
|
check(cascaded.width() == 400 && cascaded.height() == 300, "the chain keeps the canvas size");
|
|
check(sameBytes(cascaded, again), "the same seed reproduces the cascade");
|
|
check(!sameBytes(cascaded, direct), "a second stage changes the image");
|
|
|
|
// Order matters: blurring scanlines is not the same as scanning a blur.
|
|
Rng forward(5);
|
|
Rng backward(5);
|
|
const auto blurLast = renderChain({scanlines, blur}, sources, 400, 300, forward);
|
|
const auto blurFirst = renderChain({blur, scanlines}, sources, 400, 300, backward);
|
|
check(!sameBytes(blurLast, blurFirst), "the stage order changes the image");
|
|
|
|
check(chainTitle({scanlines, blur}, false) == "Scanlines \u2192 Blur", "the chain has a readable title");
|
|
check(chainSlug({scanlines, blur}, false) == "scanlines-blur", "the chain has a file name slug");
|
|
|
|
bool threw = false;
|
|
try {
|
|
Rng rng(1);
|
|
renderChain({}, sources, 100, 100, rng);
|
|
} catch (const EffectError&) {
|
|
threw = true;
|
|
}
|
|
check(threw, "an empty chain throws");
|
|
|
|
// Sources are an effect's own business: scanlines cuts strips out of
|
|
// them, blur only softens what it is handed and runs without any.
|
|
check(effectByName("scanlines")->needsSources(), "scanlines needs source images");
|
|
check(!effectByName("blur")->needsSources(), "blur needs no source images");
|
|
check(chainNeedsSources({scanlines, blur}, false), "a chain led by scanlines needs sources");
|
|
check(!chainNeedsSources({blur, scanlines}, false),
|
|
"a chain led by blur needs none, later stages see the stage before them");
|
|
check(!chainNeedsSources({}, false), "an empty chain needs no sources");
|
|
|
|
Rng bare(5);
|
|
const auto sourceless = renderChain({blur}, {}, 200, 150, bare);
|
|
check(sourceless.width() == 200 && sourceless.height() == 150,
|
|
"blur renders a canvas without sources");
|
|
|
|
bool scanlinesThrew = false;
|
|
try {
|
|
Rng rng(1);
|
|
renderChain({scanlines}, {}, 100, 100, rng);
|
|
} catch (const EffectError&) {
|
|
scanlinesThrew = true;
|
|
}
|
|
check(scanlinesThrew, "scanlines still refuses to run without sources");
|
|
|
|
// A stage switched off is skipped whole: it is handed no image and
|
|
// draws nothing from the shared rng, so the cascade comes out exactly
|
|
// as it would have without that stage in it at all.
|
|
ChainStage blurOff = blur;
|
|
blurOff.enabled = false;
|
|
ChainStage scanlinesOff = scanlines;
|
|
scanlinesOff.enabled = false;
|
|
|
|
Rng skipping(5);
|
|
const auto skipped = renderChain({scanlines, blurOff}, sources, 400, 300, skipping);
|
|
check(sameBytes(skipped, direct), "a disabled stage is skipped, its rng draws with it");
|
|
check(chainTitle({scanlines, blurOff}, false) == "Scanlines", "the title names only what ran");
|
|
check(chainSlug({scanlines, blurOff}, false) == "scanlines", "and so does the slug");
|
|
|
|
// Whoever leads the chain is handed the sources, and that is the first
|
|
// stage still switched on.
|
|
check(!chainNeedsSources({scanlinesOff, blur}, false),
|
|
"a disabled leading stage leaves the question to the stage behind it");
|
|
Rng leading(5);
|
|
const auto ledByBlur = renderChain({scanlinesOff, blur}, {}, 200, 150, leading);
|
|
check(sameBytes(ledByBlur, sourceless), "the stage behind it leads instead");
|
|
|
|
bool allOffThrew = false;
|
|
try {
|
|
Rng rng(1);
|
|
renderChain({scanlinesOff, blurOff}, sources, 100, 100, rng);
|
|
} catch (const EffectError&) {
|
|
allOffThrew = true;
|
|
}
|
|
check(allOffThrew, "a chain with every stage disabled throws");
|
|
|
|
// The command line switches a stage off by effect name, the same way
|
|
// the params pick out the stage they belong to.
|
|
const auto cli =
|
|
parsedOptions({"-e", "scanlines", "-e", "blur", "--disable", "blur", "--radius", "4"});
|
|
check(cli.has_value(), "--disable is accepted");
|
|
const auto cliStages = buildChain(*cli);
|
|
check(cliStages.size() == 2 && cliStages[0].enabled && !cliStages[1].enabled,
|
|
"--disable keeps the stage in the chain and switches it off");
|
|
check(paramInt(cliStages[1].values, "radius", 0) == 4,
|
|
"a switched-off stage still takes its flags");
|
|
check(!parsedOptions({"-e", "blur", "--disable", "nope"}).has_value(),
|
|
"--disable refuses an unknown effect");
|
|
}
|
|
|
|
std::cout << "project\n";
|
|
{
|
|
const auto dir = std::filesystem::temp_directory_path() / "effector_test_project";
|
|
std::filesystem::create_directories(dir);
|
|
{
|
|
const auto base = (dir / "city.png").string();
|
|
std::filesystem::remove(dir / "city-1.png");
|
|
std::filesystem::remove(dir / "city-2.png");
|
|
check(nextExportPath(base) == (dir / "city-1.png").string(),
|
|
"the next export after a plain name counts from 1");
|
|
check(nextExportPath((dir / "city-1.png").string()) == (dir / "city-2.png").string(),
|
|
"the next export counts on from the last number");
|
|
std::ofstream((dir / "city-1.png").string()) << "x";
|
|
check(nextExportPath(base) == (dir / "city-2.png").string(),
|
|
"the next export skips a name already on disk");
|
|
std::filesystem::remove(dir / "city-1.png");
|
|
check(nextExportPath((dir / "a-b.mp4").string()) == (dir / "a-b-1.mp4").string(),
|
|
"a dash before letters is not a count");
|
|
}
|
|
const auto source = dir / "source.png";
|
|
gradient(64, 48, 7).save(source.string());
|
|
|
|
Project project;
|
|
project.sources = {source.string(), "/elsewhere/other.png"};
|
|
project.stages.push_back({effectByName("scanlines"), {{"strip_height", 9L}}});
|
|
project.stages.push_back(
|
|
{effectByName("blur"), {{"radius", 3L}, {"direction", std::string("vertical")}}});
|
|
project.width = 640;
|
|
project.height = 400;
|
|
project.seed = 1234567890123ULL;
|
|
|
|
const auto file = dir / "test.json";
|
|
saveProject(file.string(), project);
|
|
const auto reloaded = loadProject(file.string());
|
|
|
|
check(reloaded.width == 640 && reloaded.height == 400, "the canvas survives a round trip");
|
|
check(reloaded.seed && *reloaded.seed == 1234567890123ULL, "the seed survives a round trip");
|
|
check(reloaded.stages.size() == 2 && reloaded.stages[0].effect->name() == "scanlines" &&
|
|
reloaded.stages[1].effect->name() == "blur",
|
|
"the chain keeps its effects and their order");
|
|
check(paramInt(reloaded.stages[0].values, "strip_height", 0) == 9 &&
|
|
paramInt(reloaded.stages[1].values, "radius", 0) == 3 &&
|
|
paramChoice(reloaded.stages[1].values, "direction", "") == "vertical",
|
|
"the stage params survive a round trip");
|
|
check(paramInt(reloaded.stages[0].values, "jitter", -1) ==
|
|
paramInt(effectByName("scanlines")->defaults(), "jitter", -2),
|
|
"params the file leaves out keep their default");
|
|
|
|
// A source next to the project is written relative, so the folder can
|
|
// be moved; anything outside it stays absolute.
|
|
std::ifstream stream(file.string(), std::ios::binary);
|
|
const std::string text((std::istreambuf_iterator<char>(stream)),
|
|
std::istreambuf_iterator<char>());
|
|
check(text.find("\"source.png\"") != std::string::npos, "a nearby source is written relative");
|
|
check(text.find("\"/elsewhere/other.png\"") != std::string::npos,
|
|
"a source elsewhere stays absolute");
|
|
check(reloaded.sources.size() == 2 && reloaded.sources[0] == source.string(),
|
|
"a relative source is resolved against the project");
|
|
|
|
// The point of a project: the same picture comes back out of the file.
|
|
std::vector<Image> sources = {gradient(300, 200, 4)};
|
|
Rng before(*project.seed);
|
|
Rng after(*reloaded.seed);
|
|
const auto original = renderChain(project.stages, sources, project.width, project.height, before);
|
|
const auto restored =
|
|
renderChain(reloaded.stages, sources, reloaded.width, reloaded.height, after);
|
|
check(sameBytes(original, restored), "a reloaded project renders the same image");
|
|
|
|
// Params the effects do not declare are dropped rather than carried.
|
|
const auto stripped = projectFromJson(projectToJson(reloaded));
|
|
check(stripped.stages[0].values.find("radius") == stripped.stages[0].values.end(),
|
|
"a stage only keeps the params its effect declares");
|
|
|
|
// A stage switched off keeps its place and its settings in the file and
|
|
// comes back switched off; nothing is written for the ordinary case.
|
|
Project toggled = project;
|
|
toggled.stages[1].enabled = false;
|
|
const auto offFile = dir / "disabled.json";
|
|
saveProject(offFile.string(), toggled);
|
|
const auto offBack = loadProject(offFile.string());
|
|
check(offBack.stages.size() == 2 && offBack.stages[0].enabled && !offBack.stages[1].enabled,
|
|
"a switched-off stage comes back switched off");
|
|
check(paramInt(offBack.stages[1].values, "radius", 0) == 3,
|
|
"and with the settings it was switched off with");
|
|
check(projectToJson(toggled).find("\"enabled\"") != std::string::npos &&
|
|
projectToJson(project).find("\"enabled\"") == std::string::npos,
|
|
"only a switched-off stage is written out as one");
|
|
|
|
// Styles ride along with the chain, and the stages come back pointing
|
|
// at the ones they followed.
|
|
Project stylish;
|
|
stylish.styles = {{"text", "Title", styleDefaults("text")},
|
|
{"text", "Caption", styleDefaults("text")}};
|
|
stylish.styles[0].values["font_size"] = 120.0;
|
|
stylish.styles[0].values["text_color"] = std::string("#ff8800");
|
|
stylish.styles[1].values["font_family"] = std::string("Serif");
|
|
stylish.stages.push_back(
|
|
{effectByName("text"), {{"text", std::string("One")}}, true, "Title"});
|
|
stylish.stages.push_back(
|
|
{effectByName("text"), {{"text", std::string("Two")}}, true, "Title"});
|
|
stylish.stages.push_back(
|
|
{effectByName("text"), {{"text", std::string("Three")}}, true, ""});
|
|
|
|
const auto styleFile = dir / "styles.json";
|
|
saveProject(styleFile.string(), stylish);
|
|
const auto styleBack = loadProject(styleFile.string());
|
|
check(styleBack.styles.size() == 2 && styleBack.styles[0].name == "Title" &&
|
|
styleBack.styles[1].name == "Caption" && styleBack.styles[0].kind == "text",
|
|
"the styles survive a round trip");
|
|
check(paramDouble(styleBack.styles[0].values, "font_size", 0.0) == 120.0 &&
|
|
paramText(styleBack.styles[0].values, "text_color", "") == "#ff8800" &&
|
|
paramText(styleBack.styles[1].values, "font_family", "") == "Serif",
|
|
"and so do the values they carry");
|
|
check(styleBack.stages[0].style == "Title" && styleBack.stages[1].style == "Title" &&
|
|
styleBack.stages[2].style.empty(),
|
|
"and which stage follows which");
|
|
check(paramDouble(stageValues(styleBack.stages[0], styleBack.styles), "font_size", 0.0) ==
|
|
120.0 &&
|
|
paramDouble(stageValues(styleBack.stages[2], styleBack.styles), "font_size",
|
|
0.0) == 96.0,
|
|
"a reloaded project resolves its styles as it did");
|
|
check(projectToJson(stylish).find("\"styles\"") != std::string::npos &&
|
|
projectToJson(project).find("\"styles\"") == std::string::npos &&
|
|
projectToJson(project).find("\"style\"") == std::string::npos,
|
|
"a project with no styles writes nothing about them");
|
|
|
|
// Everything that can be wrong with a style is dropped on its own,
|
|
// leaving a project that still opens and still renders.
|
|
const auto lenient = projectFromJson(R"({
|
|
"styles": [
|
|
{"kind": "nosuchkind", "name": "Ghost", "params": {}},
|
|
{"kind": "text", "name": "", "params": {}},
|
|
{"kind": "text", "name": "Title", "params": {"font_size": 60, "nonsense": 3}},
|
|
{"kind": "text", "name": "Title", "params": {"font_size": 12}}
|
|
],
|
|
"chain": [
|
|
{"effect": "text", "style": "Title", "params": {"text": "Kept"}},
|
|
{"effect": "text", "style": "Gone", "params": {"font_size": 30}},
|
|
{"effect": "blur", "style": "Title", "params": {}}
|
|
]
|
|
})");
|
|
check(lenient.styles.size() == 1 && lenient.styles[0].name == "Title",
|
|
"an unknown kind, a nameless style and a repeated name are dropped");
|
|
check(paramDouble(lenient.styles[0].values, "font_size", 0.0) == 60.0 &&
|
|
lenient.styles[0].values.find("nonsense") == lenient.styles[0].values.end(),
|
|
"a style only keeps the params its kind declares, and the first of a name wins");
|
|
check(lenient.stages[0].style == "Title" && lenient.stages[1].style.empty(),
|
|
"a stage naming a style that is not there is cut loose");
|
|
check(lenient.stages[2].style.empty(),
|
|
"and so is one whose effect takes no style at all");
|
|
check(paramDouble(stageValues(lenient.stages[1], lenient.styles), "font_size", 0.0) == 30.0,
|
|
"which leaves it rendering the values written beside it");
|
|
|
|
int refusals = 0;
|
|
for (const char* bad : {"{\"chain\": [{\"effect\": \"nope\"}]}", "{\"chain\": []}",
|
|
"{\"chain\": [{\"effect\": \"blur\"},]}", "not json at all"}) {
|
|
try {
|
|
projectFromJson(bad);
|
|
} catch (const EffectError&) {
|
|
++refusals;
|
|
}
|
|
}
|
|
check(refusals == 4, "a broken project is refused");
|
|
|
|
bool threw = false;
|
|
try {
|
|
loadProject((dir / "missing.json").string());
|
|
} catch (const EffectError&) {
|
|
threw = true;
|
|
}
|
|
check(threw, "a missing project file throws");
|
|
|
|
// A project is JSON whatever the user's locale is. gtkmm sets both the
|
|
// C and the C++ global locale from the environment, so on a German
|
|
// desktop an unguarded stream writes "0,35" and a grouped "1.920" —
|
|
// which is not JSON, and the project could not be opened again.
|
|
const char* const commaLocales[] = {"de_DE.UTF-8", "de_DE.utf8", "fr_FR.UTF-8",
|
|
"fr_FR.utf8"};
|
|
bool decimalCommaTried = false;
|
|
for (const char* name : commaLocales) {
|
|
if (std::setlocale(LC_ALL, name) == nullptr) continue;
|
|
std::locale previous;
|
|
try {
|
|
previous = std::locale::global(std::locale(name));
|
|
} catch (const std::exception&) {
|
|
continue;
|
|
}
|
|
decimalCommaTried = true;
|
|
|
|
Project wide;
|
|
wide.width = 1920;
|
|
wide.height = 1080;
|
|
wide.seed = 17353667313003709502ULL; // more bits than a double holds
|
|
wide.stages.push_back({effectByName("grain"), {{"grain_amount", 0.35}}});
|
|
|
|
const auto text = projectToJson(wide);
|
|
bool reread = false;
|
|
try {
|
|
const auto back = projectFromJson(text);
|
|
reread = back.width == 1920 && back.height == 1080 &&
|
|
back.seed == wide.seed &&
|
|
paramDouble(back.stages[0].values, "grain_amount", -1.0) == 0.35;
|
|
} catch (const EffectError&) {
|
|
}
|
|
check(text.find("0.35") != std::string::npos &&
|
|
text.find("\"width\": 1920") != std::string::npos,
|
|
std::string("a project is written as JSON under ") + name);
|
|
check(reread, std::string("a project written under ") + name + " opens again");
|
|
|
|
std::locale::global(previous);
|
|
std::setlocale(LC_ALL, "C");
|
|
break;
|
|
}
|
|
if (!decimalCommaTried) {
|
|
std::cout << " skip a decimal-comma locale (none installed)\n";
|
|
}
|
|
|
|
std::filesystem::remove_all(dir);
|
|
}
|
|
|
|
std::cout << "canvas size\n";
|
|
{
|
|
// The sizes the front-ends actually offer make the round trip whole.
|
|
int kept = 0;
|
|
for (const auto [w, h] : {std::pair<int, int>{1, 1},
|
|
{640, 400},
|
|
{1920, 1080},
|
|
{kMaxCanvasSide, kMaxCanvasSide}}) {
|
|
const auto back = projectFromJson(
|
|
projectWithCanvas(std::to_string(w), std::to_string(h)));
|
|
if (back.width == w && back.height == h) ++kept;
|
|
}
|
|
check(kept == 4, "every canvas in range is read back exactly");
|
|
|
|
Project project;
|
|
project.stages.push_back({effectByName("blur"), {}});
|
|
project.width = kMaxCanvasSide;
|
|
project.height = 3;
|
|
const auto written = projectFromJson(projectToJson(project));
|
|
check(written.width == kMaxCanvasSide && written.height == 3,
|
|
"the largest canvas survives a write and a read");
|
|
|
|
// A side that does not fit in an int must not be narrowed into one
|
|
// that does: 4294968296 truncates to a perfectly plausible 1000.
|
|
int refusals = 0;
|
|
for (const char* bad : {"4294968296", "2147483648", "99999999999999999999", "-5", "0",
|
|
"20001", "800.5", "\"800\"", "true"}) {
|
|
try {
|
|
projectFromJson(projectWithCanvas(bad, "600"));
|
|
} catch (const EffectError&) {
|
|
++refusals;
|
|
}
|
|
}
|
|
check(refusals == 9, "a canvas width an int cannot hold is refused, not wrapped");
|
|
|
|
refusals = 0;
|
|
for (const char* bad : {"4294968296", "-5", "0", "20001", "800.5"}) {
|
|
try {
|
|
projectFromJson(projectWithCanvas("800", bad));
|
|
} catch (const EffectError&) {
|
|
++refusals;
|
|
}
|
|
}
|
|
check(refusals == 5, "the same bounds apply to the canvas height");
|
|
|
|
// A canvas the file does not mention keeps the defaults rather than
|
|
// failing: an old project is still readable.
|
|
const auto bare = projectFromJson("{\"chain\": [{\"effect\": \"blur\"}]}");
|
|
check(bare.width == 1920 && bare.height == 1080, "a project with no canvas keeps 1920x1080");
|
|
|
|
// The CLI narrows the same way, from a long rather than a double.
|
|
const auto plain = canvasFromSize("800x600");
|
|
check(plain && plain->first == 800 && plain->second == 600, "-s 800x600 is stored as given");
|
|
const auto big = canvasFromSize(std::to_string(kMaxCanvasSide) + "x" +
|
|
std::to_string(kMaxCanvasSide));
|
|
check(big && big->first == kMaxCanvasSide, "-s takes the largest canvas");
|
|
check(!canvasFromSize("4294968296x600"), "-s refuses a width that does not fit in an int");
|
|
check(!canvasFromSize("2147483648x600"), "-s refuses a width just past INT_MAX");
|
|
check(!canvasFromSize("99999999999999999999x600"), "-s refuses a width past a long");
|
|
check(!canvasFromSize("800x4294968296"), "-s refuses a height that does not fit in an int");
|
|
check(!canvasFromSize("20001x600") && !canvasFromSize("800x20001"),
|
|
"-s refuses a side past the canvas limit");
|
|
check(!canvasFromSize("0x600") && !canvasFromSize("-5x600"),
|
|
"-s refuses a side that is not positive");
|
|
}
|
|
|
|
std::cout << "canvas formats\n";
|
|
{
|
|
using effector::canvasFormatByKey;
|
|
using effector::canvasFormats;
|
|
using effector::canvasFormatSize;
|
|
|
|
// Every format the menu offers must land inside the canvas bounds at
|
|
// every resolution it can be asked for, or the dropdown would offer a
|
|
// size the renderer refuses.
|
|
int usable = 0;
|
|
for (const auto& format : canvasFormats()) {
|
|
int width = 0;
|
|
int height = 0;
|
|
bool ok = true;
|
|
for (const int dpi : {effector::kMinDpi, effector::kDefaultDpi, effector::kMaxDpi}) {
|
|
canvasFormatSize(format, dpi, width, height);
|
|
ok = ok && width >= kMinCanvasSide && width <= kMaxCanvasSide &&
|
|
height >= kMinCanvasSide && height <= kMaxCanvasSide;
|
|
}
|
|
if (ok) ++usable;
|
|
}
|
|
check(usable == static_cast<int>(canvasFormats().size()),
|
|
"every format stays inside the canvas bounds at every dpi");
|
|
|
|
int unique = 0;
|
|
for (const auto& format : canvasFormats()) {
|
|
if (canvasFormatByKey(format.key) == &format) ++unique;
|
|
}
|
|
check(unique == static_cast<int>(canvasFormats().size()), "format keys are unique");
|
|
check(canvasFormatByKey("") == nullptr && canvasFormatByKey("a6") == nullptr,
|
|
"an empty or unknown key is a custom canvas");
|
|
|
|
int width = 0;
|
|
int height = 0;
|
|
canvasFormatSize(*canvasFormatByKey("a4"), 300, width, height);
|
|
check(width == 2480 && height == 3508, "A4 at 300 dpi is 2480x3508");
|
|
canvasFormatSize(*canvasFormatByKey("a4"), 600, width, height);
|
|
check(width == 4961 && height == 7016, "doubling the dpi doubles the sheet");
|
|
canvasFormatSize(*canvasFormatByKey("instagram-story"), 600, width, height);
|
|
check(width == 1080 && height == 1920, "a web format ignores the dpi");
|
|
|
|
// The CLI: a format decides the canvas whichever side of -s it is on,
|
|
// and --dpi may come before the format it applies to.
|
|
const auto sheet = parsedOptions({"--format", "a4", "--dpi", "600"});
|
|
check(sheet && sheet->width == 4961 && sheet->height == 7016,
|
|
"--format a4 --dpi 600 sets the canvas");
|
|
const auto reordered = parsedOptions({"--dpi", "600", "--format", "a4"});
|
|
check(reordered && reordered->width == 4961, "--dpi may be given before --format");
|
|
const auto both = parsedOptions({"-s", "800x600", "--format", "instagram-post"});
|
|
check(both && both->width == 1080 && both->height == 1080, "--format overrides -s");
|
|
const auto custom = parsedOptions({"-s", "800x600"});
|
|
check(custom && custom->format.empty() && custom->width == 800,
|
|
"-s alone leaves the canvas custom");
|
|
check(!parsedOptions({"--format", "a6"}), "--format refuses an unknown format");
|
|
check(!parsedOptions({"--dpi", "0"}) && !parsedOptions({"--dpi", "5000"}) &&
|
|
!parsedOptions({"--dpi", "many"}),
|
|
"--dpi refuses a resolution outside the bounds");
|
|
|
|
// A project keeps the format, and the format keeps the pixels: a dpi
|
|
// edited by hand moves the canvas with it.
|
|
Project sheetProject;
|
|
sheetProject.stages.push_back({effectByName("blur"), {}});
|
|
sheetProject.format = "a4";
|
|
sheetProject.dpi = 600;
|
|
canvasFormatSize(*canvasFormatByKey("a4"), 600, sheetProject.width, sheetProject.height);
|
|
const auto backProject = projectFromJson(projectToJson(sheetProject));
|
|
check(backProject.format == "a4" && backProject.dpi == 600 && backProject.width == 4961,
|
|
"a print format and its dpi survive a round trip");
|
|
|
|
const auto retuned = projectFromJson(
|
|
"{\"canvas\": {\"width\": 800, \"height\": 600, \"format\": \"a4\", "
|
|
"\"dpi\": 300},\n \"chain\": [{\"effect\": \"blur\"}]}");
|
|
check(retuned.width == 2480 && retuned.height == 3508,
|
|
"a named format decides the pixels over whatever was written beside it");
|
|
|
|
// A format this build does not know — a newer file, or a typo — is a
|
|
// custom canvas, so the pixels the file carries are still rendered.
|
|
const auto unknown = projectFromJson(
|
|
"{\"canvas\": {\"width\": 800, \"height\": 600, \"format\": \"a6\"},\n"
|
|
" \"chain\": [{\"effect\": \"blur\"}]}");
|
|
check(unknown.format.empty() && unknown.width == 800 && unknown.height == 600,
|
|
"an unknown format falls back to the canvas the file names");
|
|
|
|
Project plainProject;
|
|
plainProject.stages.push_back({effectByName("blur"), {}});
|
|
plainProject.width = 800;
|
|
plainProject.height = 600;
|
|
const auto plainText = projectToJson(plainProject);
|
|
check(plainText.find("format") == std::string::npos &&
|
|
plainText.find("dpi") == std::string::npos,
|
|
"a custom canvas writes no format and no dpi");
|
|
|
|
const auto webText = projectToJson([] {
|
|
Project web;
|
|
web.stages.push_back({effectByName("blur"), {}});
|
|
web.format = "hd";
|
|
return web;
|
|
}());
|
|
check(webText.find("\"format\": \"hd\"") != std::string::npos &&
|
|
webText.find("dpi") == std::string::npos,
|
|
"a web format writes no dpi it would never use");
|
|
|
|
int badDpi = 0;
|
|
for (const char* bad : {"0", "5000", "300.5", "\"300\""}) {
|
|
try {
|
|
projectFromJson(std::string("{\"canvas\": {\"dpi\": ") + bad +
|
|
"},\n \"chain\": [{\"effect\": \"blur\"}]}");
|
|
} catch (const EffectError&) {
|
|
++badDpi;
|
|
}
|
|
}
|
|
check(badDpi == 4, "a dpi outside the bounds is refused");
|
|
}
|
|
|
|
std::cout << "image io\n";
|
|
{
|
|
const auto path = std::filesystem::temp_directory_path() / "effector_test_roundtrip.png";
|
|
const auto original = gradient(64, 48, 3);
|
|
original.save(path.string());
|
|
const auto reloaded = Image::load(path.string());
|
|
check(sameBytes(original, reloaded), "png round trip is lossless");
|
|
std::filesystem::remove(path);
|
|
|
|
bool threw = false;
|
|
try {
|
|
Image::load("/definitely/not/here.png");
|
|
} catch (const std::exception&) {
|
|
threw = true;
|
|
}
|
|
check(threw, "missing file throws");
|
|
}
|
|
|
|
std::cout << "batch loading\n";
|
|
{
|
|
const auto dir = std::filesystem::temp_directory_path() / "effector_test_batch";
|
|
std::filesystem::create_directories(dir);
|
|
std::vector<std::string> paths;
|
|
for (int i = 0; i < 6; ++i) {
|
|
const auto path = dir / ("src" + std::to_string(i) + ".png");
|
|
gradient(32, 24, i + 1).save(path.string());
|
|
paths.push_back(path.string());
|
|
}
|
|
paths.push_back((dir / "missing.png").string());
|
|
|
|
std::atomic<std::size_t> calls{0};
|
|
std::size_t lastTotal = 0;
|
|
std::mutex mutex;
|
|
LoadProgress progress;
|
|
progress.onFile = [&](std::size_t done, std::size_t total, const std::string&) {
|
|
std::lock_guard<std::mutex> lock(mutex);
|
|
++calls;
|
|
lastTotal = total;
|
|
check(done >= 1 && done <= total, "progress step is within the batch");
|
|
};
|
|
|
|
std::vector<LoadFailure> failuresOut;
|
|
const auto images = loadImages(paths, failuresOut, &progress);
|
|
check(images.size() == 6, "every readable image is returned");
|
|
check(failuresOut.size() == 1, "the unreadable one is reported");
|
|
check(calls.load() == paths.size(), "progress fires once per file");
|
|
check(lastTotal == paths.size(), "progress reports the batch size");
|
|
check(images.front().path() == paths.front(), "input order is preserved");
|
|
|
|
std::atomic<bool> cancel{true};
|
|
LoadProgress cancelled;
|
|
cancelled.cancel = &cancel;
|
|
std::vector<LoadFailure> ignored;
|
|
const auto none = loadImages(paths, ignored, &cancelled);
|
|
check(none.empty(), "a cancelled batch loads nothing");
|
|
|
|
std::filesystem::remove_all(dir);
|
|
}
|
|
|
|
std::cout << "memory\n";
|
|
{
|
|
check(availableMemory() > 0, "the free memory can be read");
|
|
check(formatBytes(std::size_t{5} << 29) == "2.5 GB" && formatBytes(std::size_t{380} << 20) == "380 MB",
|
|
"sizes are written in GB and MB");
|
|
|
|
const auto dir = std::filesystem::temp_directory_path() / "effector_test_memory";
|
|
std::filesystem::create_directories(dir);
|
|
std::vector<std::string> paths;
|
|
for (int i = 0; i < 3; ++i) {
|
|
const auto path = dir / ("src" + std::to_string(i) + ".png");
|
|
gradient(400, 300, i + 1).save(path.string());
|
|
paths.push_back(path.string());
|
|
}
|
|
check(imageFilePixels(paths[0]) == 400u * 300 && imageFilePixels((dir / "missing.png").string()) == 0,
|
|
"an image is sized from its header");
|
|
|
|
// Three 400 x 300 images hold 1 MB decoded; with 1 MB free they do not fit.
|
|
limitAvailableMemory(std::size_t{1} << 20);
|
|
std::atomic<int> decoded{0};
|
|
LoadProgress counting;
|
|
counting.onFile = [&](std::size_t, std::size_t, const std::string&) { ++decoded; };
|
|
std::vector<LoadFailure> failures;
|
|
bool refused = false;
|
|
std::string message;
|
|
try {
|
|
loadImages(paths, failures, &counting);
|
|
} catch (const OutOfMemoryError& error) {
|
|
refused = true;
|
|
message = error.what();
|
|
}
|
|
check(refused, "a batch too large for the free memory is refused");
|
|
check(decoded.load() == 0, "before a single file is decoded");
|
|
check(message.find("Loading these 3 images needs about") == 0 && message.find("with 1 MB free") != std::string::npos,
|
|
"and the message says how much is needed and how much is free");
|
|
|
|
const std::vector<ChainStage> scanlines = {{effectByName("scanlines"), {}}};
|
|
const std::vector<Image> small = {gradient(64, 64, 7)};
|
|
bool renderRefused = false;
|
|
try {
|
|
Rng rng(1);
|
|
renderChain(scanlines, small, 4000, 4000, rng);
|
|
} catch (const OutOfMemoryError&) {
|
|
renderRefused = true;
|
|
}
|
|
check(renderRefused, "a render too large for the free memory is refused");
|
|
bool videoRefused = false;
|
|
try {
|
|
VideoSettings clip;
|
|
clip.enabled = true;
|
|
renderFrames(scanlines, small, 4000, 4000, 1, {}, clip, [](int, Image&&) { return true; });
|
|
} catch (const OutOfMemoryError&) {
|
|
videoRefused = true;
|
|
}
|
|
check(videoRefused, "and so is a clip");
|
|
Rng smallRng(1);
|
|
check(renderChain(scanlines, small, 100, 100, smallRng).width() == 100,
|
|
"a render that fits still runs");
|
|
|
|
limitAvailableMemory(0);
|
|
failures.clear();
|
|
check(loadImages(paths, failures).size() == 3, "with the memory there the batch loads");
|
|
|
|
std::filesystem::remove_all(dir);
|
|
}
|
|
|
|
std::cout << "video\n";
|
|
{
|
|
using effector::ChainStage;
|
|
using effector::FrameTime;
|
|
using effector::VideoSettings;
|
|
|
|
// Every preset names a canvas format this build offers, and its
|
|
// numbers are ones the project reader and the CLI accept.
|
|
int sound = 0;
|
|
for (const auto& preset : effector::videoPresets()) {
|
|
if (effector::canvasFormatByKey(preset.canvasFormat) != nullptr &&
|
|
preset.seconds >= effector::kMinDuration && preset.seconds <= effector::kMaxDuration &&
|
|
preset.fps >= effector::kMinFps && preset.fps <= effector::kMaxFps &&
|
|
effector::videoPresetByKey(preset.key) == &preset) {
|
|
++sound;
|
|
}
|
|
}
|
|
check(sound == static_cast<int>(effector::videoPresets().size()),
|
|
"every video preset names a known canvas and a valid length and rate");
|
|
const auto* story = effector::videoPresetByKey("instagram-story");
|
|
check(story != nullptr && story->canvasFormat == "instagram-story" && story->seconds == 15.0,
|
|
"the Instagram story preset is a 15 s vertical clip");
|
|
VideoSettings clip;
|
|
clip.duration = 15.0;
|
|
clip.fps = 30;
|
|
check(clip.frameCount() == 450, "15 s at 30 fps is 450 frames");
|
|
clip.duration = 0.01;
|
|
check(clip.frameCount() == 3, "a clip below the shortest length is clamped to it");
|
|
check(effector::formatSeconds(7.5) == "7.5 s" && effector::formatSeconds(15) == "15 s",
|
|
"lengths read as 7.5 s and 15 s");
|
|
check(effector::isVideoPath("a/b.MP4") && effector::isVideoPath("x.webm") &&
|
|
effector::isVideoPath("x.gif") && !effector::isVideoPath("x.png") &&
|
|
!effector::isVideoPath("mp4"),
|
|
"a video is recognised by its extension");
|
|
|
|
const auto split = effector::effectByName("channelsplit");
|
|
const auto tracking = effector::effectByName("tracking");
|
|
const std::vector<effector::Image> sources = {gradient(96, 64, 40)};
|
|
|
|
check(tracking->video() && !split->video(),
|
|
"VHS tracking is a video effect, channel split an image one");
|
|
bool imagesFirst = true;
|
|
bool seenVideo = false;
|
|
for (const auto& effect : effects()) {
|
|
imagesFirst = imagesFirst && (effect->video() || !seenVideo);
|
|
seenVideo = seenVideo || effect->video();
|
|
}
|
|
check(imagesFirst, "the registry lists the image effects before the video effects");
|
|
|
|
auto wild = tracking->defaults();
|
|
wild["tracking_wobble"] = 40L;
|
|
wild["tracking_jitter"] = 30L;
|
|
wild["tracking_bar"] = 60L;
|
|
auto frozen = tracking->defaults();
|
|
frozen["tracking_wobble"] = 0L;
|
|
frozen["tracking_jitter"] = 0L;
|
|
frozen["tracking_bar"] = 0L;
|
|
|
|
// A still skips a video effect whole, as it skips a stage switched
|
|
// off: the picture is the one the chain made without it.
|
|
ChainStage scanlinesStage{effectByName("scanlines"), {}};
|
|
ChainStage trackingStage{tracking, wild};
|
|
effector::Rng withRng(5);
|
|
effector::Rng withoutRng(5);
|
|
check(sameBytes(renderChain({scanlinesStage, trackingStage}, sources, 96, 64, withRng),
|
|
renderChain({scanlinesStage}, sources, 96, 64, withoutRng)),
|
|
"a still skips a video effect as though it were not there");
|
|
check(chainTitle({scanlinesStage, trackingStage}, false) == "Scanlines" &&
|
|
chainTitle({scanlinesStage, trackingStage}, true) == "Scanlines \u2192 VHS tracking",
|
|
"and names it only in a video");
|
|
check(chainNeedsSources({trackingStage, scanlinesStage}, false) &&
|
|
!chainNeedsSources({trackingStage, scanlinesStage}, true),
|
|
"led by a video effect, a still starts from the stage after it");
|
|
bool onlyVideo = false;
|
|
try {
|
|
effector::Rng rng(1);
|
|
renderChain({trackingStage}, sources, 96, 64, rng);
|
|
} catch (const EffectError&) {
|
|
onlyVideo = true;
|
|
}
|
|
check(onlyVideo, "a still of video effects alone is refused");
|
|
|
|
// A video effect leaves the shared rng in the same state on every
|
|
// frame, so what comes after it holds still.
|
|
effector::Rng frameA(9);
|
|
effector::Rng frameB(9);
|
|
tracking->renderFrame(sources, 96, 64, frameA, wild, FrameTime{3, 30, 30});
|
|
tracking->renderFrame(sources, 96, 64, frameB, wild, FrameTime{17, 30, 30});
|
|
check(frameA.next() == frameB.next(), "every frame leaves the shared rng in one state");
|
|
|
|
// Time is rounded to fit the clip, so the frame after the last is the
|
|
// first again, and a clip loops without a jump.
|
|
const effector::Moment start(FrameTime{0, 30, 30}, 1);
|
|
check(start.length() == 1.0 && start.loopRate(0.4) == 1.0 && start.loopRate(2.2) == 2.0,
|
|
"a rate is rounded to a whole number of cycles in the clip");
|
|
check(effector::Moment(FrameTime{15, 30, 30}, 1).cycle(1.0) == 0.5,
|
|
"half-way through the clip is half-way through its one cycle");
|
|
auto smooth = wild;
|
|
smooth["tracking_jitter"] = 0L;
|
|
const std::vector<effector::Image> input = {gradient(96, 64, 70)};
|
|
effector::Rng loopA(4);
|
|
effector::Rng loopB(4);
|
|
check(sameBytes(tracking->renderFrame(input, 96, 64, loopA, smooth, FrameTime{0, 30, 30}),
|
|
tracking->renderFrame(input, 96, 64, loopB, smooth, FrameTime{30, 30, 30})),
|
|
"without the shake, the clip loops without a jump");
|
|
effector::Rng stillFrame(4);
|
|
check(sameBytes(tracking->renderFrame(input, 96, 64, stillFrame, frozen, FrameTime{7, 30, 30}),
|
|
input[0]),
|
|
"with every motion at 0 it leaves its input alone");
|
|
|
|
auto stage = [](const std::string& name, effector::ParamValues values = {}) {
|
|
ChainStage built;
|
|
built.effect = effector::effectByName(name);
|
|
built.values = values.empty() ? built.effect->defaults() : std::move(values);
|
|
return built;
|
|
};
|
|
std::vector<ChainStage> chain = {stage("tiles"), stage("tracking", wild), stage("grain")};
|
|
VideoSettings video;
|
|
video.enabled = true;
|
|
video.duration = 1.0;
|
|
video.fps = 8;
|
|
|
|
std::vector<effector::Image> first;
|
|
const int handed = effector::renderFrames(chain, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&& frame) {
|
|
first.push_back(std::move(frame));
|
|
return true;
|
|
});
|
|
check(handed == 8 && first.size() == 8, "a clip hands out every one of its frames");
|
|
std::vector<effector::Image> second;
|
|
effector::renderFrames(chain, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&& frame) {
|
|
second.push_back(std::move(frame));
|
|
return true;
|
|
});
|
|
bool repeatable = second.size() == first.size();
|
|
for (std::size_t i = 0; repeatable && i < first.size(); ++i) {
|
|
repeatable = sameBytes(first[i], second[i]);
|
|
}
|
|
check(repeatable, "a clip renders byte for byte again from its seed");
|
|
|
|
// The still stages before the moving one are rendered once and
|
|
// reused; that shortcut must give exactly what a frame on its own is.
|
|
bool exact = true;
|
|
for (const int index : {0, 3, 7}) {
|
|
effector::Rng rng(21);
|
|
const auto alone = effector::renderChain(chain, sources, 80, 48, rng, {},
|
|
FrameTime{index, 8, 8});
|
|
exact = exact && sameBytes(alone, first[static_cast<std::size_t>(index)]);
|
|
}
|
|
check(exact, "a clip's frame is exactly that frame rendered on its own");
|
|
check(!sameBytes(first[0], first[3]) && !sameBytes(first[3], first[7]),
|
|
"frames of a moving chain differ");
|
|
|
|
std::vector<ChainStage> steady = {stage("tiles"), stage("channelsplit"), stage("grain")};
|
|
std::vector<effector::Image> held;
|
|
effector::renderFrames(steady, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&& frame) {
|
|
held.push_back(std::move(frame));
|
|
return true;
|
|
});
|
|
bool same = held.size() == 8;
|
|
for (const auto& frame : held) same = same && sameBytes(frame, held[0]);
|
|
effector::Rng stillRng(21);
|
|
check(same && sameBytes(held[0], effector::renderChain(steady, sources, 80, 48, stillRng)),
|
|
"a chain of image effects renders its still on every frame");
|
|
|
|
int seen = 0;
|
|
effector::renderFrames(chain, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&&) { return ++seen < 3; });
|
|
check(seen == 3, "returning false stops a clip early");
|
|
|
|
// A preview renders a draft of every third frame first; the frames
|
|
// are the same whichever order they come in.
|
|
const auto order = effector::draftFirstOrder(8, 3);
|
|
check(order == std::vector<int>({0, 3, 6, 1, 2, 4, 5, 7}),
|
|
"a draft order takes every third frame first, then the rest");
|
|
std::vector<effector::Image> drafted(8);
|
|
const int draftHanded = effector::renderFrames(
|
|
chain, sources, 80, 48, 21, {}, video,
|
|
[&](int index, effector::Image&& frame) {
|
|
drafted[static_cast<std::size_t>(index)] = std::move(frame);
|
|
return true;
|
|
},
|
|
order);
|
|
bool sameClip = draftHanded == 8;
|
|
for (std::size_t i = 0; sameClip && i < first.size(); ++i) {
|
|
sameClip = sameBytes(first[i], drafted[i]);
|
|
}
|
|
check(sameClip, "a clip rendered draft first holds exactly the same frames");
|
|
|
|
chain[1].enabled = false;
|
|
std::vector<effector::Image> skipped;
|
|
effector::renderFrames(chain, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&& frame) {
|
|
skipped.push_back(std::move(frame));
|
|
return true;
|
|
});
|
|
check(skipped.size() == 8 && sameBytes(skipped[0], skipped[7]),
|
|
"with the moving stage switched off the clip holds still");
|
|
|
|
const auto big = gradient(300, 120, 10);
|
|
const auto small = big.scaledToFit(100);
|
|
check(small.width() == 100 && small.height() == 40, "a preview frame keeps its shape");
|
|
check(big.scaledToFit(400).width() == 300, "a frame already small enough is left alone");
|
|
|
|
// Tile swap builds its frames out of the sources rather than
|
|
// transforming a crop of one.
|
|
{
|
|
const auto swap = effectByName("tileswap");
|
|
check(swap->video() && swap->needsSources(),
|
|
"tile swap is a video effect built from the sources");
|
|
ChainStage swapStage = stage("tileswap", {{"tileswap_width", 16L},
|
|
{"tileswap_height", 12L},
|
|
{"tileswap_rate", 2.0}});
|
|
ChainStage scanStage = stage("scanlines");
|
|
check(chainNeedsSources({swapStage}, true), "and a clip led by it needs sources");
|
|
effector::Rng withSwap(3);
|
|
effector::Rng withoutSwap(3);
|
|
check(sameBytes(renderChain({swapStage, scanStage}, sources, 80, 48, withSwap),
|
|
renderChain({scanStage}, sources, 80, 48, withoutSwap)),
|
|
"a still skips tile swap as though it were not there");
|
|
bool refused = false;
|
|
try {
|
|
effector::Rng rng(1);
|
|
renderChain({swapStage}, {}, 80, 48, rng, {}, FrameTime{0, 8, 8});
|
|
} catch (const EffectError&) {
|
|
refused = true;
|
|
}
|
|
check(refused, "tile swap with no sources is refused");
|
|
|
|
const std::vector<effector::Image> photos = {solid(60, 40, 255, 0, 0),
|
|
solid(50, 30, 0, 0, 255)};
|
|
auto frameOf = [&](const ChainStage& at, int index, int count = 8) {
|
|
effector::Rng rng(11);
|
|
return renderChain({at}, photos, 80, 48, rng, {}, FrameTime{index, count, 8});
|
|
};
|
|
effector::Rng swapA(9);
|
|
effector::Rng swapB(9);
|
|
swap->renderFrame(photos, 80, 48, swapA, swapStage.values, FrameTime{3, 8, 8});
|
|
swap->renderFrame(photos, 80, 48, swapB, swapStage.values, FrameTime{5, 8, 8});
|
|
check(swapA.next() == swapB.next(), "tile swap leaves the shared rng in one state");
|
|
|
|
auto onlyPhotos = [](const effector::Image& image) {
|
|
for (int y = 0; y < image.height(); ++y) {
|
|
const std::uint8_t* row = image.row(y);
|
|
for (int x = 0; x < image.width(); ++x) {
|
|
const std::uint8_t* p = row + static_cast<std::size_t>(x) * 3;
|
|
const bool red = p[0] == 255 && p[1] == 0 && p[2] == 0;
|
|
const bool blue = p[0] == 0 && p[1] == 0 && p[2] == 255;
|
|
if (!red && !blue) return false;
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
check(onlyPhotos(frameOf(swapStage, 0)) && onlyPhotos(frameOf(swapStage, 5)),
|
|
"its tiles are cut from the photographs");
|
|
bool swapped = false;
|
|
for (int index = 1; index < 8; ++index) {
|
|
swapped = swapped || !sameBytes(frameOf(swapStage, 0), frameOf(swapStage, index));
|
|
}
|
|
check(swapped, "its tiles change over the clip");
|
|
check(sameBytes(frameOf(swapStage, 0), frameOf(swapStage, 8)),
|
|
"and the frame after the last is the first again");
|
|
ChainStage frozenSwap = swapStage;
|
|
frozenSwap.values["tileswap_rate"] = 0.0;
|
|
check(sameBytes(frameOf(frozenSwap, 0), frameOf(frozenSwap, 5)),
|
|
"at a rate of 0 it holds still");
|
|
ChainStage scattered = swapStage;
|
|
scattered.values["tileswap_layout"] = std::string("scatter");
|
|
ChainStage bricks = swapStage;
|
|
bricks.values["tileswap_layout"] = std::string("brick");
|
|
bricks.values["tileswap_keep_order"] = true;
|
|
check(onlyPhotos(frameOf(scattered, 2)) && onlyPhotos(frameOf(bricks, 6)),
|
|
"scattered and brick layouts are cut from the photographs too");
|
|
|
|
const std::vector<ChainStage> swapChain = {swapStage, stage("grain")};
|
|
std::vector<effector::Image> clip;
|
|
effector::renderFrames(swapChain, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&& frame) {
|
|
clip.push_back(std::move(frame));
|
|
return true;
|
|
});
|
|
bool alone = clip.size() == 8;
|
|
for (const int index : {0, 4, 7}) {
|
|
effector::Rng rng(21);
|
|
alone = alone && sameBytes(effector::renderChain(swapChain, sources, 80, 48, rng,
|
|
{}, FrameTime{index, 8, 8}),
|
|
clip[static_cast<std::size_t>(index)]);
|
|
}
|
|
check(alone, "a tile swap clip's frame is exactly that frame rendered on its own");
|
|
}
|
|
|
|
// The video transforms made from image effects. Each gets a setting
|
|
// that moves plenty, one without its per-frame noise (which, drawn
|
|
// anew on every frame, is the one thing that does not loop), and one
|
|
// that switches it off.
|
|
struct Moving {
|
|
std::string name;
|
|
effector::ParamValues lively;
|
|
effector::ParamValues smooth;
|
|
effector::ParamValues off;
|
|
};
|
|
const std::vector<Moving> moving = {
|
|
{"tunnel", {{"tunnel_drift", 6L}, {"tunnel_fade", 1.0}}, {}, {{"tunnel_fade", 0.0}}},
|
|
{"flow", {{"flow_mode", std::string("swirl")}}, {}, {{"flow_strength", 0L}}},
|
|
{"sweep", {{"sweep_reverse", true}, {"sweep_max_run", 20L}}, {},
|
|
{{"sweep_line_chance", 0.0}}},
|
|
{"filmgate", {{"gate_weave", 6L}, {"gate_dust", 20L}, {"gate_scratches", 3L}},
|
|
{{"gate_weave", 6L}, {"gate_grain", 0.0}, {"gate_flicker", 0.0}, {"gate_dust", 0L},
|
|
{"gate_scratches", 0L}},
|
|
{{"gate_weave", 0L}, {"gate_grain", 0.0}, {"gate_flicker", 0.0}, {"gate_dust", 0L},
|
|
{"gate_scratches", 0L}}},
|
|
{"datamosh", {{"mosh_rate", 0.4}, {"mosh_block", 8L}, {"mosh_bleed", true}}, {},
|
|
{{"mosh_rate", 0.0}}},
|
|
};
|
|
for (const auto& [name, lively, smooth, off] : moving) {
|
|
const auto effect = effectByName(name);
|
|
auto with = [&](const effector::ParamValues& changes) {
|
|
ChainStage built = stage(name);
|
|
for (const auto& [key, value] : changes) built.values[key] = value;
|
|
return built;
|
|
};
|
|
auto frameOf = [&](const ChainStage& at, int index) {
|
|
effector::Rng rng(6);
|
|
return renderChain({at}, input, 96, 64, rng, {}, FrameTime{index, 8, 8});
|
|
};
|
|
const ChainStage wildStage = with(lively);
|
|
check(effect->video() && !effect->needsSources(),
|
|
name + " is a video effect that needs no sources");
|
|
|
|
ChainStage scanStage = stage("scanlines");
|
|
effector::Rng withIt(3);
|
|
effector::Rng withoutIt(3);
|
|
check(sameBytes(renderChain({scanStage, wildStage}, sources, 80, 48, withIt),
|
|
renderChain({scanStage}, sources, 80, 48, withoutIt)),
|
|
"a still skips " + name + " as though it were not there");
|
|
|
|
effector::Rng stateA(9);
|
|
effector::Rng stateB(9);
|
|
effect->renderFrame(sources, 80, 48, stateA, wildStage.values, FrameTime{3, 8, 8});
|
|
effect->renderFrame(sources, 80, 48, stateB, wildStage.values, FrameTime{5, 8, 8});
|
|
check(stateA.next() == stateB.next(), name + " leaves the shared rng in one state");
|
|
|
|
bool changes = false;
|
|
for (int index = 1; index < 8; ++index) {
|
|
changes = changes || !sameBytes(frameOf(wildStage, 0), frameOf(wildStage, index));
|
|
}
|
|
check(changes, name + " moves over the clip");
|
|
const ChainStage smoothStage = with(smooth);
|
|
check(sameBytes(frameOf(smoothStage, 0), frameOf(smoothStage, 8)),
|
|
name + " loops: the frame after the last is the first again");
|
|
check(sameBytes(frameOf(with(off), 5), input[0]),
|
|
name + " switched off leaves its input alone");
|
|
effector::Rng sliverA(2);
|
|
effector::Rng sliverB(2);
|
|
check(renderChain({wildStage}, input, 1, 57, sliverA, {}, FrameTime{3, 8, 8}).height() == 57 &&
|
|
renderChain({wildStage}, input, 57, 1, sliverB, {}, FrameTime{3, 8, 8}).width() == 57,
|
|
name + " copes with a sliver of a canvas");
|
|
|
|
const std::vector<ChainStage> movingChain = {stage("tiles"), wildStage, stage("grain")};
|
|
std::vector<effector::Image> clip;
|
|
effector::renderFrames(movingChain, sources, 80, 48, 21, {}, video,
|
|
[&](int, effector::Image&& frame) {
|
|
clip.push_back(std::move(frame));
|
|
return true;
|
|
});
|
|
bool exactFrames = clip.size() == 8;
|
|
for (const int index : {0, 5, 7}) {
|
|
effector::Rng rng(21);
|
|
exactFrames = exactFrames &&
|
|
sameBytes(effector::renderChain(movingChain, sources, 80, 48, rng, {},
|
|
FrameTime{index, 8, 8}),
|
|
clip[static_cast<std::size_t>(index)]);
|
|
}
|
|
check(exactFrames, "a " + name + " clip's frame is exactly that frame rendered on its own");
|
|
}
|
|
|
|
// The project file: a video says so, a still says nothing about time.
|
|
effector::Project project;
|
|
project.stages = {stage("tracking", wild)};
|
|
const auto stillJson = effector::projectToJson(project);
|
|
check(stillJson.find("\"video\"") == std::string::npos, "a still project writes no video");
|
|
check(!effector::projectFromJson(stillJson).video.enabled, "and reads back as a still");
|
|
project.video.enabled = true;
|
|
project.video.duration = 7.5;
|
|
project.video.fps = 24;
|
|
project.video.preset = "instagram-story";
|
|
const auto back = effector::projectFromJson(effector::projectToJson(project));
|
|
check(back.video.enabled && back.video.duration == 7.5 && back.video.fps == 24 &&
|
|
back.video.preset == "instagram-story",
|
|
"a video project keeps its length, rate and preset");
|
|
const auto motion = back.stages.at(0).values;
|
|
check(effector::paramInt(motion, "tracking_jitter", 0) == 30 &&
|
|
effector::paramInt(motion, "tracking_bar", 0) == 60,
|
|
"and its stages keep their motion");
|
|
const std::string base = "{\"chain\": [{\"effect\": \"blur\"}], \"video\": {\"duration\": ";
|
|
check(!effector::projectFromJson(base + "2, \"preset\": \"cinema\"}}").video.preset.size(),
|
|
"an unknown preset reads as custom");
|
|
check(effector::projectToJson(project).find("\"quality\"") == std::string::npos,
|
|
"the standard quality is not written");
|
|
project.video.quality = "small";
|
|
check(effector::projectFromJson(effector::projectToJson(project)).video.quality == "small",
|
|
"another quality is kept");
|
|
check(effector::projectFromJson(base + "2, \"quality\": \"lossless\"}}").video.quality.empty(),
|
|
"an unknown quality reads as the standard one");
|
|
check(effector::videoQualityOrDefault("").key == effector::kDefaultVideoQuality &&
|
|
effector::videoQualityByKey(effector::kDefaultVideoQuality) != nullptr,
|
|
"an empty quality is the standard one, which the table holds");
|
|
bool rejected = false;
|
|
try {
|
|
effector::projectFromJson(base + "2, \"fps\": 500}}");
|
|
} catch (const effector::EffectError&) {
|
|
rejected = true;
|
|
}
|
|
check(rejected, "a frame rate out of range is refused");
|
|
|
|
// The command line.
|
|
const auto preset = parsedOptions({"--video-preset", "instagram-story", "-o", "x.mp4"});
|
|
check(preset && preset->video.enabled && preset->width == 1080 && preset->height == 1920 &&
|
|
preset->video.duration == 15.0 && preset->video.fps == 30 &&
|
|
preset->video.preset == "instagram-story",
|
|
"--video-preset sets the canvas, length and rate");
|
|
const auto shorter = parsedOptions({"--duration", "5", "--video-preset", "instagram-story"});
|
|
check(shorter && shorter->video.duration == 5.0 && shorter->height == 1920 &&
|
|
shorter->video.preset.empty(),
|
|
"a length given alongside wins and leaves the preset custom");
|
|
const auto sized = parsedOptions({"--video-preset", "hd-clip", "-s", "320x240"});
|
|
check(sized && sized->width == 320 && sized->format.empty(),
|
|
"a size given alongside wins over the preset's canvas");
|
|
check(!parsedOptions({"--fps", "0"}) && !parsedOptions({"--duration", "abc"}) &&
|
|
!parsedOptions({"--duration", "400"}) && !parsedOptions({"--video-preset", "vhs"}),
|
|
"a bad rate, length or preset is refused");
|
|
const auto quality = parsedOptions({"--duration", "2", "--video-quality", "high"});
|
|
check(quality && quality->video.quality == "high", "--video-quality picks the encoding");
|
|
check(!parsedOptions({"--video-quality", "best"}), "and refuses one it does not know");
|
|
check(!parsedOptions({"-o", "x.png"})->video.enabled, "without them the output is a still");
|
|
|
|
bool wrongName = false;
|
|
try {
|
|
effector::VideoWriter writer("clip.png", 16, 16, 30);
|
|
} catch (const effector::EffectError&) {
|
|
wrongName = true;
|
|
}
|
|
check(wrongName, "a video is not written under an image's name");
|
|
|
|
if (effector::ffmpegAvailable()) {
|
|
const auto dir = std::filesystem::temp_directory_path() / "effector-video-test";
|
|
std::filesystem::create_directories(dir);
|
|
const auto file = (dir / "clip.mp4").string();
|
|
{
|
|
// Odd sides: the writer pads them for the encoder.
|
|
effector::VideoWriter writer(file, 17, 9, 12);
|
|
for (int i = 0; i < 3; ++i) writer.write(gradient(17, 9, 40 * i));
|
|
writer.finish();
|
|
}
|
|
check(std::filesystem::exists(file) && std::filesystem::file_size(file) > 0,
|
|
"ffmpeg writes an .mp4 of odd size");
|
|
// Every quality, through every codec.
|
|
bool everyQuality = true;
|
|
for (const auto& quality : effector::videoQualities()) {
|
|
for (const char* extension : {".mp4", ".webm", ".gif"}) {
|
|
const auto encoded = (dir / (quality.key + extension)).string();
|
|
effector::VideoWriter writer(encoded, 16, 16, 12, quality.key);
|
|
for (int i = 0; i < 2; ++i) writer.write(gradient(16, 16, 60 * i));
|
|
writer.finish();
|
|
everyQuality = everyQuality && std::filesystem::file_size(encoded) > 0;
|
|
}
|
|
}
|
|
check(everyQuality, "every quality writes .mp4, .webm and .gif");
|
|
const auto dropped = (dir / "dropped.webm").string();
|
|
{
|
|
effector::VideoWriter writer(dropped, 16, 16, 12);
|
|
writer.write(gradient(16, 16, 10));
|
|
writer.cancel();
|
|
}
|
|
check(!std::filesystem::exists(dropped), "a cancelled video leaves no file behind");
|
|
bool wrongSize = false;
|
|
try {
|
|
effector::VideoWriter writer((dir / "sized.mp4").string(), 16, 16, 12);
|
|
writer.write(gradient(8, 8, 10));
|
|
} catch (const effector::EffectError&) {
|
|
wrongSize = true;
|
|
}
|
|
check(wrongSize && !std::filesystem::exists(dir / "sized.mp4"),
|
|
"a frame of the wrong size is refused and the file dropped");
|
|
std::filesystem::remove_all(dir);
|
|
} else {
|
|
std::cout << " skip writing a video (ffmpeg is not installed)\n";
|
|
}
|
|
}
|
|
|
|
std::cout << "version\n";
|
|
{
|
|
// A release is the version in CMakeLists.txt and its entry at the top
|
|
// of CHANGELOG.md; bumping one without the other fails here.
|
|
const std::string_view log = kChangelog;
|
|
const auto newest = log.find("\n## [");
|
|
check(newest != std::string_view::npos &&
|
|
log.substr(newest + 5).starts_with(std::string(kVersion) + "]"),
|
|
"the newest changelog entry is this version");
|
|
std::ifstream pkgbuild(std::string(EFFECTOR_SOURCE_DIR) + "/packaging/arch/PKGBUILD");
|
|
std::string line;
|
|
std::string pkgver;
|
|
while (std::getline(pkgbuild, line)) {
|
|
if (line.starts_with("pkgver=")) pkgver = line.substr(7);
|
|
}
|
|
check(pkgver == kVersion, "the Arch PKGBUILD packages this version");
|
|
const auto options = parsedOptions({"--version"});
|
|
check(options && options->showVersion, "--version is understood");
|
|
const auto shortOptions = parsedOptions({"-V"});
|
|
check(shortOptions && shortOptions->showVersion, "and so is -V");
|
|
}
|
|
|
|
std::cout << (failures == 0 ? "\nall checks passed\n" : "\n" + std::to_string(failures) + " failed\n");
|
|
return failures == 0 ? 0 : 1;
|
|
}
|