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Allow different byte per pixel values

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This commit is contained in:
Nicolas Werner 2020-09-03 21:12:16 +02:00
parent 5bafc77ece
commit 8272d00b50
2 changed files with 9 additions and 3 deletions
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10
blurhash.cpp
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@ -1,12 +1,15 @@
#include "blurhash.hpp"
#define _USE_MATH_DEFINES
#include <algorithm>
#include <array>
#include <cassert>
#include <cmath>
#include <stdexcept>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifdef DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
#include <doctest.h>
#endif
@ -248,7 +251,7 @@ multiplyBasisFunction(Components components, int width, int height, unsigned cha
namespace blurhash {
Image
decode(std::string_view blurhash, size_t width, size_t height)
decode(std::string_view blurhash, size_t width, size_t height, size_t bytesPerPixel)
{
Image i{};
@ -292,6 +295,9 @@ decode(std::string_view blurhash, size_t width, size_t height)
i.image.push_back(static_cast<unsigned char>(linearToSrgb(c.r)));
i.image.push_back(static_cast<unsigned char>(linearToSrgb(c.g)));
i.image.push_back(static_cast<unsigned char>(linearToSrgb(c.b)));
for (size_t p = 3; p < bytesPerPixel; p++)
i.image.push_back(255);
}
}

2
blurhash.hpp
View file

@ -13,7 +13,7 @@ struct Image
// Decode a blurhash to an image with size width*height
Image
decode(std::string_view blurhash, size_t width, size_t height);
decode(std::string_view blurhash, size_t width, size_t height, size_t bytesPerPixel = 3);
// Encode an image of rgb pixels (without padding) with size width*height into a blurhash with x*y
// components