/* * The copyright in this software is being made available under the 2-clauses * BSD License, included below. This software may be subject to other third * party and contributor rights, including patent rights, and no such rights * are granted under this license. * * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2014, Professor Benoit Macq * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2003-2007, Francois-Olivier Devaux * Copyright (c) 2003-2014, Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * Copyright (c) 2012, Carl Hetherington * Copyright (c) 2017, IntoPIX SA <[email protected]> * 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 OPJ_T1_H #define OPJ_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 … #define T1_NUMCTXS_ZC … #define T1_NUMCTXS_SC … #define T1_NUMCTXS_MAG … #define T1_NUMCTXS_AGG … #define T1_NUMCTXS_UNI … #define T1_CTXNO_ZC … #define T1_CTXNO_SC … #define T1_CTXNO_MAG … #define T1_CTXNO_AGG … #define T1_CTXNO_UNI … #define T1_NUMCTXS … #define T1_NMSEDEC_FRACBITS … #define T1_TYPE_MQ … #define T1_TYPE_RAW … /* BEGINNING of flags that apply to opj_flag_t */ /** We hold the state of individual data points for the T1 encoder using * a single 32-bit flags word to hold the state of 4 data points. This corresponds * to the 4-point-high columns that the data is processed in. * * These \#defines declare the layout of a 32-bit flags word. * * This is currently done for encoding only. * The values must NOT be changed, otherwise this is going to break a lot of * assumptions. */ /* SIGMA: significance state (3 cols x 6 rows) * CHI: state for negative sample value (1 col x 6 rows) * MU: state for visited in refinement pass (1 col x 4 rows) * PI: state for visited in significance pass (1 col * 4 rows) */ #define T1_SIGMA_0 … #define T1_SIGMA_1 … #define T1_SIGMA_2 … #define T1_SIGMA_3 … #define T1_SIGMA_4 … #define T1_SIGMA_5 … #define T1_SIGMA_6 … #define T1_SIGMA_7 … #define T1_SIGMA_8 … #define T1_SIGMA_9 … #define T1_SIGMA_10 … #define T1_SIGMA_11 … #define T1_SIGMA_12 … #define T1_SIGMA_13 … #define T1_SIGMA_14 … #define T1_SIGMA_15 … #define T1_SIGMA_16 … #define T1_SIGMA_17 … #define T1_CHI_0 … #define T1_CHI_0_I … #define T1_CHI_1 … #define T1_CHI_1_I … #define T1_MU_0 … #define T1_PI_0 … #define T1_CHI_2 … #define T1_CHI_2_I … #define T1_MU_1 … #define T1_PI_1 … #define T1_CHI_3 … #define T1_MU_2 … #define T1_PI_2 … #define T1_CHI_4 … #define T1_MU_3 … #define T1_PI_3 … #define T1_CHI_5 … #define T1_CHI_5_I … /** As an example, the bits T1_SIGMA_3, T1_SIGMA_4 and T1_SIGMA_5 * indicate the significance state of the west neighbour of data point zero * of our four, the point itself, and its east neighbour respectively. * Many of the bits are arranged so that given a flags word, you can * look at the values for the data point 0, then shift the flags * word right by 3 bits and look at the same bit positions to see the * values for data point 1. * * The \#defines below help a bit with this; say you have a flags word * f, you can do things like * * (f & T1_SIGMA_THIS) * * to see the significance bit of data point 0, then do * * ((f >> 3) & T1_SIGMA_THIS) * * to see the significance bit of data point 1. */ #define T1_SIGMA_NW … #define T1_SIGMA_N … #define T1_SIGMA_NE … #define T1_SIGMA_W … #define T1_SIGMA_THIS … #define T1_SIGMA_E … #define T1_SIGMA_SW … #define T1_SIGMA_S … #define T1_SIGMA_SE … #define T1_SIGMA_NEIGHBOURS … #define T1_CHI_THIS … #define T1_CHI_THIS_I … #define T1_MU_THIS … #define T1_PI_THIS … #define T1_CHI_S … #define T1_LUT_SGN_W … #define T1_LUT_SIG_N … #define T1_LUT_SGN_E … #define T1_LUT_SIG_W … #define T1_LUT_SGN_N … #define T1_LUT_SIG_E … #define T1_LUT_SGN_S … #define T1_LUT_SIG_S … /* END of flags that apply to opj_flag_t */ /* ----------------------------------------------------------------------- */ /** Flags for 4 consecutive rows of a column */ opj_flag_t; /** Tier-1 coding (coding of code-block coefficients) */ opj_t1_t; /** @name Exported functions */ /*@{*/ /* ----------------------------------------------------------------------- */ /** Encode the code-blocks of a tile @param tcd TCD handle @param tile The tile to encode @param tcp Tile coding parameters @param mct_norms FIXME DOC @param mct_numcomps Number of components used for MCT */ OPJ_BOOL opj_t1_encode_cblks(opj_tcd_t* tcd, opj_tcd_tile_t *tile, opj_tcp_t *tcp, const OPJ_FLOAT64 * mct_norms, OPJ_UINT32 mct_numcomps); /** Decode the code-blocks of a tile @param tcd TCD handle @param pret Pointer to return value @param tilec The tile to decode @param tccp Tile coding parameters @param p_manager the event manager @param p_manager_mutex mutex for the event manager @param check_pterm whether PTERM correct termination should be checked */ void opj_t1_decode_cblks(opj_tcd_t* tcd, volatile OPJ_BOOL* pret, opj_tcd_tilecomp_t* tilec, opj_tccp_t* tccp, opj_event_mgr_t *p_manager, opj_mutex_t* p_manager_mutex, OPJ_BOOL check_pterm); /** * Creates a new Tier 1 handle * and initializes the look-up tables of the Tier-1 coder/decoder * @return a new T1 handle if successful, returns NULL otherwise */ opj_t1_t* opj_t1_create(OPJ_BOOL isEncoder); /** * Destroys a previously created T1 handle * * @param p_t1 Tier 1 handle to destroy */ void opj_t1_destroy(opj_t1_t *p_t1); /* ----------------------------------------------------------------------- */ /*@}*/ /*@}*/ #endif /* OPJ_T1_H */
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