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#ifndef DRACO_COMPRESSION_BIT_CODERS_SYMBOL_BIT_DECODER_H_
#define DRACO_COMPRESSION_BIT_CODERS_SYMBOL_BIT_DECODER_H_
#include <algorithm>
#include <vector>
#include "draco/core/decoder_buffer.h"
namespace draco {
// Class for decoding bits using the symbol entropy encoding. Wraps
// |DecodeSymbols|. Note that this uses a symbol-based encoding scheme for
// encoding bits.
class SymbolBitDecoder {
public:
// Sets |source_buffer| as the buffer to decode bits from.
bool StartDecoding(DecoderBuffer *source_buffer);
// Decode one bit. Returns true if the bit is a 1, otherwise false.
bool DecodeNextBit();
// Decode the next |nbits| and return the sequence in |value|. |nbits| must be
// > 0 and <= 32.
void DecodeLeastSignificantBits32(int nbits, uint32_t *value);
void EndDecoding() { Clear(); }
private:
void Clear();
std::vector<uint32_t> symbols_;
};
} // namespace draco
#endif // DRACO_COMPRESSION_BIT_CODERS_SYMBOL_BIT_DECODER_H_
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