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268 lines
9.2 KiB
268 lines
9.2 KiB
/* |
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* The copyright in this software is being made available under the 2-clauses |
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* BSD License, included below. This software may be subject to other third |
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* party and contributor rights, including patent rights, and no such rights |
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* are granted under this license. |
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* |
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* Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium |
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* Copyright (c) 2002-2014, Professor Benoit Macq |
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* Copyright (c) 2001-2003, David Janssens |
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* Copyright (c) 2002-2003, Yannick Verschueren |
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* Copyright (c) 2003-2007, Francois-Olivier Devaux |
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* Copyright (c) 2003-2014, Antonin Descampe |
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* Copyright (c) 2005, Herve Drolon, FreeImage Team |
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* Copyright (c) 2012, Carl Hetherington |
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* Copyright (c) 2017, IntoPIX SA <support@intopix.com> |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef OPJ_T1_H |
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#define OPJ_T1_H |
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/** |
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@file t1.h |
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@brief Implementation of the tier-1 coding (coding of code-block coefficients) (T1) |
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The functions in T1.C have for goal to realize the tier-1 coding operation. The functions |
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in T1.C are used by some function in TCD.C. |
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*/ |
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/** @defgroup T1 T1 - Implementation of the tier-1 coding */ |
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/*@{*/ |
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/* ----------------------------------------------------------------------- */ |
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#define T1_NMSEDEC_BITS 7 |
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#define T1_NUMCTXS_ZC 9 |
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#define T1_NUMCTXS_SC 5 |
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#define T1_NUMCTXS_MAG 3 |
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#define T1_NUMCTXS_AGG 1 |
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#define T1_NUMCTXS_UNI 1 |
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#define T1_CTXNO_ZC 0 |
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#define T1_CTXNO_SC (T1_CTXNO_ZC+T1_NUMCTXS_ZC) |
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#define T1_CTXNO_MAG (T1_CTXNO_SC+T1_NUMCTXS_SC) |
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#define T1_CTXNO_AGG (T1_CTXNO_MAG+T1_NUMCTXS_MAG) |
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#define T1_CTXNO_UNI (T1_CTXNO_AGG+T1_NUMCTXS_AGG) |
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#define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI) |
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#define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1) |
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#define T1_TYPE_MQ 0 /**< Normal coding using entropy coder */ |
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#define T1_TYPE_RAW 1 /**< No encoding the information is store under raw format in codestream (mode switch RAW)*/ |
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/* BEGINNING of flags that apply to opj_flag_t */ |
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/** We hold the state of individual data points for the T1 encoder using |
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* a single 32-bit flags word to hold the state of 4 data points. This corresponds |
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* to the 4-point-high columns that the data is processed in. |
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* |
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* These \#defines declare the layout of a 32-bit flags word. |
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* |
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* This is currently done for encoding only. |
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* The values must NOT be changed, otherwise this is going to break a lot of |
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* assumptions. |
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*/ |
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/* SIGMA: significance state (3 cols x 6 rows) |
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* CHI: state for negative sample value (1 col x 6 rows) |
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* MU: state for visited in refinement pass (1 col x 4 rows) |
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* PI: state for visited in significance pass (1 col * 4 rows) |
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*/ |
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#define T1_SIGMA_0 (1U << 0) |
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#define T1_SIGMA_1 (1U << 1) |
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#define T1_SIGMA_2 (1U << 2) |
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#define T1_SIGMA_3 (1U << 3) |
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#define T1_SIGMA_4 (1U << 4) |
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#define T1_SIGMA_5 (1U << 5) |
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#define T1_SIGMA_6 (1U << 6) |
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#define T1_SIGMA_7 (1U << 7) |
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#define T1_SIGMA_8 (1U << 8) |
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#define T1_SIGMA_9 (1U << 9) |
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#define T1_SIGMA_10 (1U << 10) |
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#define T1_SIGMA_11 (1U << 11) |
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#define T1_SIGMA_12 (1U << 12) |
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#define T1_SIGMA_13 (1U << 13) |
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#define T1_SIGMA_14 (1U << 14) |
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#define T1_SIGMA_15 (1U << 15) |
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#define T1_SIGMA_16 (1U << 16) |
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#define T1_SIGMA_17 (1U << 17) |
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#define T1_CHI_0 (1U << 18) |
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#define T1_CHI_0_I 18 |
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#define T1_CHI_1 (1U << 19) |
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#define T1_CHI_1_I 19 |
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#define T1_MU_0 (1U << 20) |
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#define T1_PI_0 (1U << 21) |
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#define T1_CHI_2 (1U << 22) |
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#define T1_CHI_2_I 22 |
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#define T1_MU_1 (1U << 23) |
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#define T1_PI_1 (1U << 24) |
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#define T1_CHI_3 (1U << 25) |
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#define T1_MU_2 (1U << 26) |
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#define T1_PI_2 (1U << 27) |
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#define T1_CHI_4 (1U << 28) |
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#define T1_MU_3 (1U << 29) |
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#define T1_PI_3 (1U << 30) |
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#define T1_CHI_5 (1U << 31) |
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#define T1_CHI_5_I 31 |
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/** As an example, the bits T1_SIGMA_3, T1_SIGMA_4 and T1_SIGMA_5 |
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* indicate the significance state of the west neighbour of data point zero |
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* of our four, the point itself, and its east neighbour respectively. |
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* Many of the bits are arranged so that given a flags word, you can |
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* look at the values for the data point 0, then shift the flags |
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* word right by 3 bits and look at the same bit positions to see the |
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* values for data point 1. |
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* |
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* The \#defines below help a bit with this; say you have a flags word |
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* f, you can do things like |
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* |
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* (f & T1_SIGMA_THIS) |
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* |
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* to see the significance bit of data point 0, then do |
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* |
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* ((f >> 3) & T1_SIGMA_THIS) |
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* |
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* to see the significance bit of data point 1. |
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*/ |
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#define T1_SIGMA_NW T1_SIGMA_0 |
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#define T1_SIGMA_N T1_SIGMA_1 |
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#define T1_SIGMA_NE T1_SIGMA_2 |
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#define T1_SIGMA_W T1_SIGMA_3 |
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#define T1_SIGMA_THIS T1_SIGMA_4 |
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#define T1_SIGMA_E T1_SIGMA_5 |
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#define T1_SIGMA_SW T1_SIGMA_6 |
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#define T1_SIGMA_S T1_SIGMA_7 |
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#define T1_SIGMA_SE T1_SIGMA_8 |
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#define T1_SIGMA_NEIGHBOURS (T1_SIGMA_NW | T1_SIGMA_N | T1_SIGMA_NE | T1_SIGMA_W | T1_SIGMA_E | T1_SIGMA_SW | T1_SIGMA_S | T1_SIGMA_SE) |
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#define T1_CHI_THIS T1_CHI_1 |
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#define T1_CHI_THIS_I T1_CHI_1_I |
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#define T1_MU_THIS T1_MU_0 |
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#define T1_PI_THIS T1_PI_0 |
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#define T1_CHI_S T1_CHI_2 |
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#define T1_LUT_SGN_W (1U << 0) |
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#define T1_LUT_SIG_N (1U << 1) |
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#define T1_LUT_SGN_E (1U << 2) |
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#define T1_LUT_SIG_W (1U << 3) |
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#define T1_LUT_SGN_N (1U << 4) |
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#define T1_LUT_SIG_E (1U << 5) |
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#define T1_LUT_SGN_S (1U << 6) |
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#define T1_LUT_SIG_S (1U << 7) |
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/* END of flags that apply to opj_flag_t */ |
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/* ----------------------------------------------------------------------- */ |
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/** Flags for 4 consecutive rows of a column */ |
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typedef OPJ_UINT32 opj_flag_t; |
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/** |
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Tier-1 coding (coding of code-block coefficients) |
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*/ |
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typedef struct opj_t1 { |
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/** MQC component */ |
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opj_mqc_t mqc; |
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OPJ_INT32 *data; |
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/** Flags used by decoder and encoder. |
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* Such that flags[1+0] is for state of col=0,row=0..3, |
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flags[1+1] for col=1, row=0..3, flags[1+flags_stride] for col=0,row=4..7, ... |
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This array avoids too much cache trashing when processing by 4 vertical samples |
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as done in the various decoding steps. */ |
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opj_flag_t *flags; |
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OPJ_UINT32 w; |
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OPJ_UINT32 h; |
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OPJ_UINT32 datasize; |
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OPJ_UINT32 flagssize; |
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OPJ_BOOL encoder; |
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/* The 3 variables below are only used by the decoder */ |
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/* set to TRUE in multithreaded context */ |
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OPJ_BOOL mustuse_cblkdatabuffer; |
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/* Temporary buffer to concatenate all chunks of a codebock */ |
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OPJ_BYTE *cblkdatabuffer; |
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/* Maximum size available in cblkdatabuffer */ |
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OPJ_UINT32 cblkdatabuffersize; |
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} opj_t1_t; |
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/** @name Exported functions */ |
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/*@{*/ |
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/* ----------------------------------------------------------------------- */ |
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/** |
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Encode the code-blocks of a tile |
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@param tcd TCD handle |
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@param tile The tile to encode |
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@param tcp Tile coding parameters |
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@param mct_norms FIXME DOC |
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@param mct_numcomps Number of components used for MCT |
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*/ |
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OPJ_BOOL opj_t1_encode_cblks(opj_tcd_t* tcd, |
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opj_tcd_tile_t *tile, |
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opj_tcp_t *tcp, |
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const OPJ_FLOAT64 * mct_norms, |
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OPJ_UINT32 mct_numcomps); |
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/** |
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Decode the code-blocks of a tile |
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@param tcd TCD handle |
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@param pret Pointer to return value |
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@param tilec The tile to decode |
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@param tccp Tile coding parameters |
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@param p_manager the event manager |
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@param p_manager_mutex mutex for the event manager |
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@param check_pterm whether PTERM correct termination should be checked |
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*/ |
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void opj_t1_decode_cblks(opj_tcd_t* tcd, |
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volatile OPJ_BOOL* pret, |
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opj_tcd_tilecomp_t* tilec, |
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opj_tccp_t* tccp, |
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opj_event_mgr_t *p_manager, |
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opj_mutex_t* p_manager_mutex, |
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OPJ_BOOL check_pterm); |
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/** |
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* Creates a new Tier 1 handle |
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* and initializes the look-up tables of the Tier-1 coder/decoder |
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* @return a new T1 handle if successful, returns NULL otherwise |
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*/ |
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opj_t1_t* opj_t1_create(OPJ_BOOL isEncoder); |
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/** |
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* Destroys a previously created T1 handle |
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* |
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* @param p_t1 Tier 1 handle to destroy |
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*/ |
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void opj_t1_destroy(opj_t1_t *p_t1); |
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/* ----------------------------------------------------------------------- */ |
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/*@}*/ |
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/*@}*/ |
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#endif /* OPJ_T1_H */
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