Martin Michelsen
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
#pragma once
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#include <phosg/Encoding.hh>
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#include <phosg/Image.hh>
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#include <phosg/Strings.hh>
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#include "Text.hh"
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enum class GVRDataFormat : uint8_t {
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INTENSITY_4 = 0x00,
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INTENSITY_8 = 0x01,
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INTENSITY_A4 = 0x02,
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INTENSITY_A8 = 0x03,
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RGB565 = 0x04,
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RGB5A3 = 0x05,
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ARGB8888 = 0x06,
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INDEXED_4 = 0x08,
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INDEXED_8 = 0x09,
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DXT1 = 0x0E,
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};
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std::string encode_gvm(
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const phosg::ImageRGBA8888N& img,
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GVRDataFormat data_format,
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const std::string& internal_name,
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uint32_t global_index);
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phosg::ImageRGB888 decode_fon(const std::string& data, size_t width);
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std::string encode_fon(const phosg::ImageRGB888& img);
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constexpr uint16_t encode_rgb5a3(uint32_t c) {
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if ((phosg::get_a(c) & 0xE0) == 0xE0) {
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return 0x8000 | ((phosg::get_r(c) << 7) & 0x7C00) | ((phosg::get_g(c) << 2) & 0x03E0) | ((phosg::get_b(c) >> 3) & 0x001F);
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} else {
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return ((phosg::get_a(c) << 7) & 0x7000) | ((phosg::get_r(c) << 4) & 0x0F00) | (phosg::get_g(c) & 0x00F0) | ((phosg::get_b(c) >> 4) & 0x000F);
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}
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}
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template <phosg::PixelFormat Format>
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bool has_any_transparent_pixels(const phosg::Image<Format>& img) {
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if constexpr (phosg::Image<Format>::HAS_ALPHA) {
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for (size_t y = 0; y < img.get_height(); y++) {
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for (size_t x = 0; x < img.get_height(); x++) {
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if (phosg::get_a(img.read(x, y)) != 0xFF) {
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return true;
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}
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}
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}
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}
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return false;
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}
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