feat/api #46
2 changed files with 1 additions and 193 deletions
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@ -181,43 +181,6 @@
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#define AUX_SIZE 0x8000
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/************************************************************************************************************\
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|| ___ _ _ ___ ____ ____ ||
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|| | \_/ |__] |___ [__ ||
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|| | | | |___ ___] ||
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\************************************************************************************************************/
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/*----------------------------------------------------------------------------------------------*\
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! !
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! DESCRIPTION: !
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! ------------ !
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! !
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! This structure is used to read/assemble a packed codestream during coding. The !
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! byte buffer is flushed to the packed stream as soon as the a single byte has !
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! been assembled. !
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! !
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\*----------------------------------------------------------------------------------------------*/
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typedef struct
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{
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//TODO: remove
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uchar error; // Error flag used during streaming.
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uint64 size;
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uint64 position;
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//TODO: remove
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uint64 L; // Number of bytes written to/from stream.
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//TODO: remove
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uint64 Lmax; // Size of packed stream.
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uint64 size_incr; // Size incrmnt used for stream assembly.
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//TODO: remove
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uint8 T; // Byte buffer.
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int8 t; // Byte buffer counter.
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uchar *access; // Pointer used to parse packed stream.
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uchar *memory; // Memory handle for packed stream chunck.
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} span;
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/*----------------------------------------------------------------------------------------------------------*\
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! STRUCT NAME: eas3_header !
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! ----------- !
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@ -84,151 +84,6 @@
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|| | | \ | \/ | | | |___ | |__| | \| |___ | | |__| | \| ___] ||
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\************************************************************************************************************/
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/*----------------------------------------------------------------------------------------------------------*\
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! FUNCTION NAME: uint32 eas3_bytes_used(bitstream *const stream) !
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! -------------- !
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! !
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! DESCRIPTION: !
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! ------------ !
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! This function is used to evaluate the number of bytes that have already been !
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! written to the allocated bitstream memory block. !
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! !
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! PARAMETERS: !
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! ----------- !
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! Variable Type Description !
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! -------- ---- ----------- !
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! stream bitstream* - Structure that !
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! !
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! RETURN VALUE: !
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! ------------- !
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! Type Description !
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! ---- ----------- !
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! unsigned int(32 bit) - Number of bites that have been written to the !
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! bitstream. !
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! !
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! DEVELOPMENT HISTORY: !
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! -------------------- !
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! !
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! Date Author Change Id Release Description Of Change !
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! ---- ------ --------- ------- --------------------- !
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! 13.05.2019 Patrick Vogler B87D120 V 0.1.0 function created !
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! !
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\*----------------------------------------------------------------------------------------------------------*/
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uint64
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eas3_bytes_used(span const *const stream)
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{
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if(stream->T == 0xFF)
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{
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return stream->L + 1;
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}
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else
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{
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return stream->L;
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}
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}
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/*----------------------------------------------------------------------------------------------------------*\
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! FUNCTION NAME: span* bwc_init_stream(uchar* memory, uint32 size, char instr) !
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! -------------- !
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! !
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! DESCRIPTION: !
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! ------------ !
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! This function is used to initialize a bwc bitstream. For encoding, a null pointer !
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! is passed as a memory handle and the function will allocate a memory block with the !
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! specified stream size. For decoding, a valid memory handle, passed by the function !
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! caller, will be stored in the bitstream structure. The byte buffer counter t, !
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! stream size Lmax and size increment are initialized with their appropriate values. !
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! !
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! PARAMETERS: !
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! ----------- !
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! Variable Type Description !
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! -------- ---- ----------- !
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! size unsigned int(32 bit) - Initial size of the bwc stream. !
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! !
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! memory unsigned char - Memory handle for the bwc stream memory !
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! block. !
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! !
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! instr char - Constant used to instruct the field !
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! initialization. !
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! !
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! RETURN VALUE: !
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! ------------- !
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! Type Description !
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! ---- ----------- !
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! bitstream* - Memory handle for the initialized bwc stream. !
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! !
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! DEVELOPMENT HISTORY: !
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! -------------------- !
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! !
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! Date Author Change Id Release Description Of Change !
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! ---- ------ --------- ------- --------------------- !
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! 19.06.2019 Patrick Vogler B87D120 V 0.1.0 function created !
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! !
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\*----------------------------------------------------------------------------------------------------------*/
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span*
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eas3_init_stream(uchar* memory, uint32 size, char instr)
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{
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/*-----------------------*\
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! DEFINE STRUCTS: !
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\*-----------------------*/
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span *stream;
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/*-----------------------*\
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! DEFINE ASSERTIONS: !
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\*-----------------------*/
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assert(instr == 'c' || instr == 'd');
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/*--------------------------------------------------------*\
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! Allocate the bwc stream structure. !
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\*--------------------------------------------------------*/
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stream = calloc(1, sizeof(span));
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if(!stream)
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{
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// memory allocation error
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fprintf(stderr, MEMERROR);
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return NULL;
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}
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/*--------------------------------------------------------*\
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! Evaluate if a valid memory handle has been passed by the !
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! function caller. !
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\*--------------------------------------------------------*/
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if(!memory)
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{
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/*--------------------------------------------------------*\
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! If no valid memory handle has been passed, allocate a !
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! memory block with the specifiec stream size. !
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\*--------------------------------------------------------*/
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stream->memory = calloc(size, sizeof(uchar));
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if(!stream->memory)
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{
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// memory allocation error
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fprintf(stderr, MEMERROR);
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return NULL;
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}
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}
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else
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{
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/*--------------------------------------------------------*\
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! If a valid memory handle has been passed for decoding, !
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! save the memory handle in the bwc stream structure. !
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\*--------------------------------------------------------*/
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stream->memory = memory;
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}
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/*--------------------------------------------------------*\
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! Initialize the byte buffer counter, stream size and size !
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! increment for the current stream. !
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\*--------------------------------------------------------*/
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stream->t = (instr == 'c') ? 8 : 0;
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stream->Lmax = size;
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stream->size_incr = (uint64)(size / 2);
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/*--------------------------------------------------------*\
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! Return the stream memory handle. !
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\*--------------------------------------------------------*/
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return stream;
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}
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/*----------------------------------------------------------------------------------------------------------*\
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! !
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@ -238,7 +93,6 @@ eas3_init_stream(uchar* memory, uint32 size, char instr)
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! information. !
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! !
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\*----------------------------------------------------------------------------------------------------------*/
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#define aux_enqueue(aux, aux_pos, aux_len, chunck, chunck_len) \
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{ \
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if (aux_pos + chunck_len > aux_len) \
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@ -483,7 +337,6 @@ read_eas3_header(FILE *const fp, eas3_data *const data)
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! DEFINE STRUCTS: !
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\*-----------------------*/
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bwc_gl_inf *info;
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span *aux;
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eas3_std_params *params;
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/*-----------------------*\
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@ -834,7 +687,6 @@ write_eas3_header(FILE *const fp, eas3_data *const data)
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! DEFINE STRUCTS: !
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\*-----------------------*/
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bwc_gl_inf *info;
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span *aux;
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eas3_std_params *params;
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eas3_param_names *param_names;
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@ -853,11 +705,6 @@ write_eas3_header(FILE *const fp, eas3_data *const data)
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return 1;
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}
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/*--------------------------------------------------------*\
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! Initialize the auxiliary information stream. !
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\*--------------------------------------------------------*/
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aux = eas3_init_stream(data->uchar_aux, data->aux_len, 'd');
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// Rewind aux
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data->aux_pos = 0;
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@ -1020,10 +867,8 @@ write_eas3_header(FILE *const fp, eas3_data *const data)
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free(buffer_char);
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/*--------------------------------------------------------*\
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! Free the auxiliary information memory block stream and !
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! params structure. !
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! Free the params structure. !
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\*--------------------------------------------------------*/
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free(aux);
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free(params);
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return 0;
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