dlib C++ Library - entropy_encoder_model_kernel_6.h

    // Copyright (C) 2005  Davis E. King (davis@dlib.net)
    // License: Boost Software License   See LICENSE.txt for the full license.
    #ifndef DLIB_ENTROPY_ENCODER_MODEL_KERNEl_6_
    #define DLIB_ENTROPY_ENCODER_MODEL_KERNEl_6_

    #include "../algs.h"
    #include "entropy_encoder_model_kernel_abstract.h"
    #include "../assert.h"

    namespace dlib
    {

        template <
            unsigned long alphabet_size,
            typename entropy_encoder
            >
        class entropy_encoder_model_kernel_6
        {
            /*!
                INITIAL VALUE
                    Initially this object's finite context model is empty

                CONVENTION
                    &get_entropy_encoder() == coder

                    This is an order-(-1) model.  So it doesn't really do anything.
                    Every symbol has the same probability.
            !*/

        public:

            typedef entropy_encoder entropy_encoder_type;

            entropy_encoder_model_kernel_6 (
                entropy_encoder& coder
            );

            virtual ~entropy_encoder_model_kernel_6 (
            );

            inline void clear(
            );

            inline void encode (
                unsigned long symbol
            );

            entropy_encoder& get_entropy_encoder (
            ) { return coder; }

            static unsigned long get_alphabet_size (
            ) { return alphabet_size; }

        private:

            entropy_encoder& coder;

            // restricted functions
            entropy_encoder_model_kernel_6(entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>&);        // copy constructor
            entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>& operator=(entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>&);    // assignment operator

        };

    // ----------------------------------------------------------------------------------------
    // ----------------------------------------------------------------------------------------
        // member function definitions
    // ----------------------------------------------------------------------------------------
    // ----------------------------------------------------------------------------------------

        template <
            unsigned long alphabet_size,
            typename entropy_encoder
            >
        entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>::
        entropy_encoder_model_kernel_6 (
            entropy_encoder& coder_
        ) :
            coder(coder_)
        {
            COMPILE_TIME_ASSERT( 1 < alphabet_size && alphabet_size < 65535 );
        }

    // ----------------------------------------------------------------------------------------

        template <
            unsigned long alphabet_size,
            typename entropy_encoder
            >
        entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>::
        ~entropy_encoder_model_kernel_6 (
        )
        {
        }

    // ----------------------------------------------------------------------------------------

        template <
            unsigned long alphabet_size,
            typename entropy_encoder
            >
        void entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>::
        clear(
        )
        {
        }

    // ----------------------------------------------------------------------------------------

        template <
            unsigned long alphabet_size,
            typename entropy_encoder
            >
        void entropy_encoder_model_kernel_6<alphabet_size,entropy_encoder>::
        encode (
            unsigned long symbol
        )
        {
            // use order minus one context
            coder.encode(symbol,symbol+1,alphabet_size);
        }

    // ----------------------------------------------------------------------------------------

    }

    #endif // DLIB_ENTROPY_ENCODER_MODEL_KERNEl_6_