BigWhoop/include/library/private/bitstream.h

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2023-06-20 11:43:33 +00:00
/*==================================================================================================================================*\
|| ||
|| /$$$$$$$ /$$ /$$ /$$ /$$ ||
|| | $$__ $$|__/ | $$ /$ | $$| $$ ||
|| | $$ \ $$ /$$ /$$$$$$ | $$ /$$$| $$| $$$$$$$ /$$$$$$ /$$$$$$ /$$$$$$ ||
|| | $$$$$$$ | $$ /$$__ $$ | $$/$$ $$ $$| $$__ $$ /$$__ $$ /$$__ $$ /$$__ $$ ||
|| | $$__ $$| $$| $$ \ $$ | $$$$_ $$$$| $$ \ $$| $$ \ $$| $$ \ $$| $$ \ $$ ||
|| | $$ \ $$| $$| $$ | $$ | $$$/ \ $$$| $$ | $$| $$ | $$| $$ | $$| $$ | $$ ||
|| | $$$$$$$/| $$| $$$$$$$ | $$/ \ $$| $$ | $$| $$$$$$/| $$$$$$/| $$$$$$$/ ||
|| |_______/ |__/ \____ $$ |__/ \__/|__/ |__/ \______/ \______/ | $$____/ ||
|| /$$ \ $$ | $$ ||
|| | $$$$$$/ | $$ ||
|| \______/ |__/ ||
|| ||
|| File: bwc_bitstream.h ||
|| ----- ||
|| ||
|| DESCRIPTION: ||
|| ------------ ||
|| This file describes a set of functions that can be used to create, manipulate and terminate ||
|| a bitstream. These functions facilitate the creation or reading of a compressed bwc code- ||
|| stream and can emit/extract information on a per bit, symbol (64-bit) or string basis. ||
|| ||
|| ||
|| STRUCTS: ||
|| -------- ||
|| - ||
|| ||
|| PUBLIC FUNCTIONS: ||
|| ----------------- ||
|| - bwc_init_stream ||
|| - bwc_emit_chunck ||
|| - bwc_emit_symbol ||
|| - bwc_emit_bit ||
|| - bwc_get_chunck ||
|| - bwc_get_symbol ||
|| - bwc_get_bit ||
|| - bwc_terminate_stream ||
|| ||
|| DEVELOPMENT HISTORY: ||
|| -------------------- ||
|| ||
|| Date Author Change Id Release Description Of Change ||
|| ---- ------ --------- ------- --------------------- ||
|| 28.05.2018 Patrick Vogler B87D120 V 0.1.0 header file created ||
|| ||
|| -------------------------------------------------------------------------------------------------------------------- ||
|| ||
|| Copyright (c) 2023, High Performance Computing Center - University of Stuttgart ||
|| ||
|| Redistribution and use in source and binary forms, with or without modification, are permitted provided that the ||
|| following conditions are met: ||
|| ||
|| (1) Redistributions of source code must retain the above copyright notice, this list of conditions and ||
|| the following disclaimer. ||
|| ||
|| (2) Redistributions in binary form must reproduce the above copyright notice, this list of conditions ||
|| and the following disclaimer in the documentation and/or other materials provided with the ||
|| distribution. ||
|| ||
|| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, ||
|| INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE ||
|| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ||
|| SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR ||
|| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, ||
|| WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE ||
|| USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ||
|| ||
\*==================================================================================================================================*/
#ifndef BITSTREAM_H
#define BITSTREAM_H
/************************************************************************************************************\
|| _ _ _ ____ _ _ _ ___ ____ ||
|| | |\ | | | | | | \ |___ ||
|| | | \| |___ |___ |__| |__/ |___ ||
|| ||
\************************************************************************************************************/
#include "types.h"
/************************************************************************************************************\
|| ___ _ _ ___ _ _ ____ ____ _ _ _ _ ____ ___ _ ____ _ _ ____ ||
|| |__] | | |__] | | | |___ | | |\ | | | | | | |\ | [__ ||
|| | |__| |__] |___ | |___ | |__| | \| |___ | | |__| | \| ___] ||
|| ||
\************************************************************************************************************/
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: uint32 bytes_used(bwc_stream *const stream) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! This function is used to evaluate the number of bytes that have already been !
! written to the allocated bitstream memory block. !
! !
\*----------------------------------------------------------------------------------------------------------*/
uint64
bytes_used(bwc_stream *const stream);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: bwc_stream* bwc_init_stream(uchar* memory, uint32 size, char instr) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! This function is used to initialize a bwc bitstream. For encoding, a null pointer !
! is passed as a memory handle and the function will allocate a memory block with the !
! specified stream size. For decoding, a valid memory handle, passed by the function !
! caller, will be stored in the bwc_stream structure. The byte buffer counter t, !
! stream size Lmax and size increment are initialized with their appropriate values. !
! !
\*----------------------------------------------------------------------------------------------------------*/
bwc_stream*
bwc_init_stream(uchar* memory, uint32 size, char instr);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
void
bwc_emit_chunck(bwc_stream *const stream, const uchar* chunck, const uint64 size);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
void
bwc_emit_symbol(bwc_stream *const stream, const uint64 symbol, const uint8 size);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
void
bwc_emit_bit(bwc_stream *const stream, const uint64 bit);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
void
flush_stream(bwc_stream *const stream);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
uchar*
bwc_get_chunck(bwc_stream *const stream, const uint64 length);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
uint64
bwc_get_symbol(bwc_stream *const stream, const uint8 length);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
uchar
bwc_get_bit(bwc_stream *const stream);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void *test(void) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! DESCRIPTION NEEDED !
! !
\*----------------------------------------------------------------------------------------------------------*/
uchar
bwc_terminate_stream(bwc_stream *stream, bwc_packed_stream *const packed_stream);
/*----------------------------------------------------------------------------------------------------------*\
! FUNCTION NAME: void release_packed_stream(bwc_packed_stream *stream) !
! -------------- !
! !
! DESCRIPTION: !
! ------------ !
! This function is used to release all the information stored in a packed bitstream !
! and reset the parameters for another (de)compression run. !
! !
\*----------------------------------------------------------------------------------------------------------*/
void
release_packed_stream(bwc_packed_stream *stream);
#endif