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#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;
};
} // namespace Slang
#endif
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