#ifndef SLANG_COMPRESSION_SYSTEM_H
#define SLANG_COMPRESSION_SYSTEM_H

#include "slang-basic.h"

namespace Slang
{

struct CompressionStyle
{
    enum class Type
    {
        Level,                              ///< Use the value specified in 'level' to control compression
        BestSpeed,                          ///< Best for speed (typically lower compression ration)
        BestCompression,                    ///< Best compression (typically slower)
        Default,                            ///< Default compression (a good balance between speed and size)
    };
    Type m_type = Type::Default;           ///< The type 
    float m_level = 1.0f;                  ///< 0 lowest compression, 1 highest compression (Ignored if m_type != Type::Level)
};

enum class CompressionSystemType
{
    None,
    Deflate,
    LZ4,
    CountOf,
};

class ICompressionSystem : public ISlangUnknown
{
    SLANG_COM_INTERFACE(0xcc935840, 0xe059, 0x4bb8, { 0xa2, 0x2d, 0x92, 0x7b, 0x3c, 0x73, 0x8f, 0x85 })

        /** Get the compression system type
        @return The compression system type */
    virtual SLANG_NO_THROW CompressionSystemType SLANG_MCALL getSystemType() = 0;

        /** compress
        @param src Points to the start of the data to compress
        @param srcSizeInBytes The size of the source data to compress in bytes
        @param outBlob The input data compressed
        @return SLANG_OK if successful */
    virtual SLANG_NO_THROW SlangResult SLANG_MCALL compress(const CompressionStyle* style, const void* src, size_t srcSizeInBytes, ISlangBlob** outBlob) = 0;

        /* decompress
        @param compressed The start of the compressed data
        @param compressedSizeInBytes The compressed size in bytes
        @param decompressedSizeInBytes The size of the decompressed buffer. MUST be exactly the same as the original source size.
        @param outDecompressed Where decompressed data is written
        @return SLANG_OK if successful */
    virtual SLANG_NO_THROW SlangResult SLANG_MCALL decompress(const void* compressed, size_t compressedSizeInBytes, size_t decompressedSizeInBytes, void* outDecompressed) = 0;
};

}

#endif