0,0 → 1,147 |
/* |
* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium |
* Copyright (c) 2002-2007, Professor Benoit Macq |
* Copyright (c) 2001-2003, David Janssens |
* Copyright (c) 2002-2003, Yannick Verschueren |
* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe |
* Copyright (c) 2005, Herve Drolon, FreeImage Team |
* All rights reserved. |
* |
* 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 __T1_H |
#define __T1_H |
/** |
@file t1.h |
@brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1) |
|
The functions in T1.C have for goal to realize the tier-1 coding operation. The functions |
in T1.C are used by some function in TCD.C. |
*/ |
|
/** @defgroup T1 T1 - Implementation of the tier-1 coding */ |
/*@{*/ |
|
/* ----------------------------------------------------------------------- */ |
#define T1_NMSEDEC_BITS 7 |
|
#define T1_SIG_NE 0x0001 /**< Context orientation : North-East direction */ |
#define T1_SIG_SE 0x0002 /**< Context orientation : South-East direction */ |
#define T1_SIG_SW 0x0004 /**< Context orientation : South-West direction */ |
#define T1_SIG_NW 0x0008 /**< Context orientation : North-West direction */ |
#define T1_SIG_N 0x0010 /**< Context orientation : North direction */ |
#define T1_SIG_E 0x0020 /**< Context orientation : East direction */ |
#define T1_SIG_S 0x0040 /**< Context orientation : South direction */ |
#define T1_SIG_W 0x0080 /**< Context orientation : West direction */ |
#define T1_SIG_OTH (T1_SIG_N|T1_SIG_NE|T1_SIG_E|T1_SIG_SE|T1_SIG_S|T1_SIG_SW|T1_SIG_W|T1_SIG_NW) |
#define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W) |
|
#define T1_SGN_N 0x0100 |
#define T1_SGN_E 0x0200 |
#define T1_SGN_S 0x0400 |
#define T1_SGN_W 0x0800 |
#define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W) |
|
#define T1_SIG 0x1000 |
#define T1_REFINE 0x2000 |
#define T1_VISIT 0x4000 |
|
#define T1_NUMCTXS_ZC 9 |
#define T1_NUMCTXS_SC 5 |
#define T1_NUMCTXS_MAG 3 |
#define T1_NUMCTXS_AGG 1 |
#define T1_NUMCTXS_UNI 1 |
|
#define T1_CTXNO_ZC 0 |
#define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC) |
#define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC) |
#define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG) |
#define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG) |
#define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI) |
|
#define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1) |
|
#define T1_TYPE_MQ 0 /**< Normal coding using entropy coder */ |
#define T1_TYPE_RAW 1 /**< No encoding the information is store under raw format in codestream (mode switch RAW)*/ |
|
/* ----------------------------------------------------------------------- */ |
|
typedef short flag_t; |
|
/** |
Tier-1 coding (coding of code-block coefficients) |
*/ |
typedef struct opj_t1 { |
/** codec context */ |
opj_common_ptr cinfo; |
|
/** MQC component */ |
opj_mqc_t *mqc; |
/** RAW component */ |
opj_raw_t *raw; |
|
int *data; |
flag_t *flags; |
int w; |
int h; |
int datasize; |
int flagssize; |
int flags_stride; |
} opj_t1_t; |
|
#define MACRO_t1_flags(x,y) t1->flags[((x)*(t1->flags_stride))+(y)] |
|
/** @name Exported functions */ |
/*@{*/ |
/* ----------------------------------------------------------------------- */ |
/** |
Create a new T1 handle |
and initialize the look-up tables of the Tier-1 coder/decoder |
@return Returns a new T1 handle if successful, returns NULL otherwise |
@see t1_init_luts |
*/ |
opj_t1_t* t1_create(opj_common_ptr cinfo); |
/** |
Destroy a previously created T1 handle |
@param t1 T1 handle to destroy |
*/ |
void t1_destroy(opj_t1_t *t1); |
/** |
Encode the code-blocks of a tile |
@param t1 T1 handle |
@param tile The tile to encode |
@param tcp Tile coding parameters |
*/ |
void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp); |
/** |
Decode the code-blocks of a tile |
@param t1 T1 handle |
@param tilec The tile to decode |
@param tccp Tile coding parameters |
*/ |
void t1_decode_cblks(opj_t1_t* t1, opj_tcd_tilecomp_t* tilec, opj_tccp_t* tccp); |
/* ----------------------------------------------------------------------- */ |
/*@}*/ |
|
/*@}*/ |
|
#endif /* __T1_H */ |