54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
#ifndef MBGL_UTIL_IMAGE
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#define MBGL_UTIL_IMAGE
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#include <string>
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#include <memory>
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#include <algorithm>
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namespace mbgl {
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enum ImageAlphaMode {
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Unassociated,
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Premultiplied
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};
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template <ImageAlphaMode Mode>
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class Image {
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public:
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Image() = default;
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Image(size_t w, size_t h)
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: width(w),
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height(h),
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data(std::make_unique<uint8_t[]>(size())) {}
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Image(size_t w, size_t h, std::unique_ptr<uint8_t[]> data_)
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: width(w),
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height(h),
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data(std::move(data_)) {}
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bool operator==(const Image& rhs) const {
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return width == rhs.width && height == rhs.height &&
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std::equal(data.get(), data.get() + size(), rhs.data.get(),
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rhs.data.get() + rhs.size());
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}
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size_t stride() const { return width * 4; }
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size_t size() const { return width * height * 4; }
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size_t width = 0;
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size_t height = 0;
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std::unique_ptr<uint8_t[]> data;
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};
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using UnassociatedImage = Image<ImageAlphaMode::Unassociated>;
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using PremultipliedImage = Image<ImageAlphaMode::Premultiplied>;
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// TODO: don't use std::string for binary data.
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PremultipliedImage decodeImage(const std::string&);
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std::string encodePNG(const PremultipliedImage&);
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} // namespace mbgl
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#endif
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