2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
5 * Copyright (c) 2005, Herve Drolon, FreeImage Team
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34 @brief Implementation of operations for raw encoding (RAW)
36 The functions in RAW.C have for goal to realize the operation of raw encoding linked
37 with the corresponding mode switch.
40 /** @defgroup RAW RAW - Implementation of operations for raw encoding */
44 RAW encoding operations
46 typedef struct opj_raw {
47 /** temporary buffer where bits are coded or decoded */
49 /** number of bits already read or free to write */
51 /** maximum length to decode */
55 /** pointer to the current position in the buffer */
57 /** pointer to the start of the buffer */
59 /** pointer to the end of the buffer */
63 /** @name Exported functions */
65 /* ----------------------------------------------------------------------- */
67 Create a new RAW handle
68 @return Returns a new RAW handle if successful, returns NULL otherwise
70 opj_raw_t* raw_create(void);
72 Destroy a previously created RAW handle
73 @param raw RAW handle to destroy
75 void raw_destroy(opj_raw_t *raw);
77 Return the number of bytes written/read since initialisation
78 @param raw RAW handle to destroy
79 @return Returns the number of bytes already encoded
81 int raw_numbytes(opj_raw_t *raw);
83 Initialize the decoder
85 @param bp Pointer to the start of the buffer from which the bytes will be read
86 @param len Length of the input buffer
88 void raw_init_dec(opj_raw_t *raw, unsigned char *bp, int len);
90 Decode a symbol using raw-decoder. Cfr p.506 TAUBMAN
92 @return Returns the decoded symbol (0 or 1)
94 int raw_decode(opj_raw_t *raw);
95 /* ----------------------------------------------------------------------- */