coco
124 lines
3.8 KiB
C++
124 lines
3.8 KiB
C++
// Copyright (C) 2003 Davis E. King (davis@dlib.net)
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// License: Boost Software License See LICENSE.txt for the full license.
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#ifndef DLIB_ENTROPY_DECODER_KERNEl_C_
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#define DLIB_ENTROPY_DECODER_KERNEl_C_
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#include "entropy_decoder_kernel_abstract.h"
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#include "../algs.h"
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#include "../assert.h"
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#include <iostream>
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namespace dlib
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{
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template <
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typename decoder
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>
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class entropy_decoder_kernel_c : public decoder
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{
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public:
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std::istream& get_stream (
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) const;
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void decode (
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uint32 low_count,
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uint32 high_count
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);
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uint32 get_target (
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uint32 total
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);
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private:
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uint32 _get_target;
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uint32 TOTAL;
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};
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// ----------------------------------------------------------------------------------------
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// ----------------------------------------------------------------------------------------
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// member function definitions
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// ----------------------------------------------------------------------------------------
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// ----------------------------------------------------------------------------------------
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template <
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typename decoder
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>
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std::istream& entropy_decoder_kernel_c<decoder>::
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get_stream (
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) const
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{
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// make sure requires clause is not broken
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DLIB_CASSERT( this->stream_is_set() == true,
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"\tstd::istream& entropy_decoder::get_stream()"
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<< "\n\tyou must set a stream for this object before you can get it"
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<< "\n\tthis: " << this
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);
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// call the real function
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return decoder::get_stream();
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}
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// ----------------------------------------------------------------------------------------
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template <
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typename decoder
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>
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void entropy_decoder_kernel_c<decoder>::
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decode (
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uint32 low_count,
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uint32 high_count
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)
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{
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// make sure requires clause is not broken
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DLIB_CASSERT( (low_count <= _get_target) && (_get_target < high_count) &&
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(high_count <= TOTAL) &&
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(this->stream_is_set() == true) && (this->get_target_called() == true),
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"\tvoid entropy_decoder::decode()"
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<< "\n\tRefer to the ensures clause for this function for further information."
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<< "\n\tNote that _get_target refers to get_target(TOTAL)"
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<< "\n\tthis: " << this
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<< "\n\tlow_count: " << low_count
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<< "\n\thigh_count: " << high_count
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<< "\n\tTOTAL: " << TOTAL
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<< "\n\tget_target(TOTAL): " << _get_target
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<< "\n\tis_stream_set(): " << (this->stream_is_set() ? "true" : "false" )
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<< "\n\tget_target_called(): " << (this->get_target_called() ? "true" : "false" )
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);
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// call the real function
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decoder::decode(low_count,high_count);
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}
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// ----------------------------------------------------------------------------------------
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template <
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typename decoder
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>
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uint32 entropy_decoder_kernel_c<decoder>::
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get_target (
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uint32 total
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)
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{
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// make sure requires clause is not broken
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DLIB_CASSERT( (total > 0) && (total < 65536) && (this->stream_is_set() == true),
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"\tvoid entropy_decoder::get_target()"
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<< "\n\tyou must set a stream for this object before you can get the "
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<< "\n\rnext target."
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<< "\n\tthis: " << this
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<< "\n\ttotal: " << total
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);
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// call the real function
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_get_target = decoder::get_target(total);
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TOTAL = total;
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return _get_target;
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}
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// ----------------------------------------------------------------------------------------
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}
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#endif // DLIB_ENTROPY_ENCODER_KERNEl_C_
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