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#ifndef COMPRESSER_H_
# define COMPRESSER_H_
# ifdef LZO2
# include "lzo/lzo1x.h"
# include "lzo/lzo1c.h"
# else
# include "lzo1x.h"
# include "lzo1c.h"
# endif
class EncodeBuffer;
struct cEntry;
typedef enum
{ NO_STREAM_COMPRESSION = 0, LZO_COMPRESSION = 1 } CompressionType;
// Number of bits needed to hold an enum value.
# define COMPRESSION_TYPE_BITS 1
class Compresser
{
public:
Compresser(int compressionLevel);
~Compresser();
CompressionType compressBuffer(const unsigned char *buffer,
const unsigned int size,
EncodeBuffer & encodeBuffer);
// These next two things really belong in a factory class that
// builds compressers & decompressers based on the compression
// level. But I'm lazy.
static int isValidCompressionLevel(int compressionLevel);
static lzo_decompress_t getDecompresser(int compressionLevel);
private:
lzo_byte * lzoCompressionWorkspace;
lzo_byte *lzoCompressionBuffer;
lzo_uint lzoCompressionBufferSize;
lzo_compress_t compressionFnc;
static cEntry *getCEntry(int compressionLevel);
};
#endif
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