ExrLoader.h

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#pragma once
#include <tiny_gltf.h>
#include "tinyexr.h"
#include <vector>
#include <filesystem>
#include <string>
 
namespace Engine::Assets::Textures {
    struct ExrChannelInfo {
        std::string name;       
        int pixel_type;         
        int x_sampling;         
        int y_sampling;         
        unsigned char p_linear; 
    };

    struct ExrHeader {
        ExrHeader() = default;

        explicit ExrHeader(EXRHeader header);
 
        std::string name;                              
        int num_channels = 0;                          
        int compression_type = 0;                      
        std::vector<ExrChannelInfo> channels;          
 
        bool valid = false;                            
    };

    class ExrLoader {
    public:
        ExrLoader() = default;
 
        ~ExrLoader() = default;

        tinygltf::Image load(const std::filesystem::path &filename);

        [[nodiscard]] ExrHeader loadHeader(std::filesystem::path path);
    };
}