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Diffstat (limited to 'src/renderer.hpp')
| -rw-r--r-- | src/renderer.hpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/renderer.hpp b/src/renderer.hpp new file mode 100644 index 0000000..4272203 --- /dev/null +++ b/src/renderer.hpp @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2020-2021 Vasile Vilvoiu <vasi.vilvoiu@gmail.com> + * + * specgram is free software; you can redistribute it and/or modify + * it under the terms of the MIT license. See LICENSE for details. + */ +#ifndef _RENDERER_HPP_ +#define _RENDERER_HPP_ + +#include "configuration.hpp" +#include <SFML/Graphics.hpp> +#include <vector> +#include <list> + +/* Axis tick */ +typedef std::tuple<double, std::string> AxisTick; + +/* Orientation */ +enum class Orientation { + k90CCW, + kNormal, + k90CW, + k180 +}; + +/* + * Spectrogram rendering class + */ +class Renderer { +private: + const Configuration configuration_; + const std::size_t fft_count_; + + sf::Font font_; + + sf::RenderTexture canvas_; + sf::Texture fft_area_texture_; + + std::size_t width_; + std::size_t height_; + + sf::Transform legend_transform_; + sf::Transform fft_live_transform_; + sf::Transform fft_area_transform_; + + std::list<AxisTick> frequency_ticks_; + std::list<AxisTick> live_ticks_; + + static std::list<AxisTick> GetLinearTicks(double v_min, double v_max, const std::string& v_unit, + unsigned int num_ticks); + static std::list<AxisTick> GetNiceTicks(double v_min, double v_max, const std::string& v_unit, + unsigned int length_px, unsigned int est_tick_length_px); + + void RenderAxis(sf::RenderTexture& texture, + const sf::Transform& t, bool lhs, Orientation orientation, double length, + const std::list<AxisTick>& ticks); + +public: + Renderer() = delete; + Renderer(const Configuration& conf, const ColorMap& cmap, const ValueMap& vmap, std::size_t fft_count); + + /* render commands */ + void RenderFFTArea(const std::vector<uint8_t>& memory); + void RenderFFTArea(const std::list<std::vector<uint8_t>>& history); + void RenderLiveFFT(const RealWindow& window, const std::vector<uint8_t>& colors); + + /* canvas builder */ + sf::Texture GetCanvas(); + + /* size getters */ + auto GetWidth() const { return width_; } + auto GetHeight() const { return height_; } +}; + +#endif
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