GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/mqc.c Lines: 15 15 100.0 %
Date: 2019-11-18 18:00:01 Branches: 2 2 100.0 %

Line Branch Exec Source
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/*
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 * MQ-coder encoder and decoder common functions
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 * Copyright (c) 2007 Kamil Nowosad
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * MQ-coder common (decoder/encoder) functions
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 * @file
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 * @author Kamil Nowosad
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 */
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#include <string.h>
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#include <stdint.h>
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#include "libavutil/attributes.h"
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#include "mqc.h"
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/* MQ coder context state structure */
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typedef struct MqcCxState {
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    uint16_t qe;
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    uint8_t  nmps;
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    uint8_t  nlps;
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    uint8_t  sw;
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} MqcCxState;
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static const MqcCxState cx_states[47] = {
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    { 0x5601,  1,  1, 1 },
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    { 0x3401,  2,  6, 0 },
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    { 0x1801,  3,  9, 0 },
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    { 0x0AC1,  4, 12, 0 },
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    { 0x0521,  5, 29, 0 },
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    { 0x0221, 38, 33, 0 },
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    { 0x5601,  7,  6, 1 },
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    { 0x5401,  8, 14, 0 },
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    { 0x4801,  9, 14, 0 },
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    { 0x3801, 10, 14, 0 },
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    { 0x3001, 11, 17, 0 },
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    { 0x2401, 12, 18, 0 },
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    { 0x1C01, 13, 20, 0 },
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    { 0x1601, 29, 21, 0 },
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    { 0x5601, 15, 14, 1 },
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    { 0x5401, 16, 14, 0 },
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    { 0x5101, 17, 15, 0 },
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    { 0x4801, 18, 16, 0 },
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    { 0x3801, 19, 17, 0 },
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    { 0x3401, 20, 18, 0 },
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    { 0x3001, 21, 19, 0 },
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    { 0x2801, 22, 19, 0 },
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    { 0x2401, 23, 20, 0 },
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    { 0x2201, 24, 21, 0 },
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    { 0x1C01, 25, 22, 0 },
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    { 0x1801, 26, 23, 0 },
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    { 0x1601, 27, 24, 0 },
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    { 0x1401, 28, 25, 0 },
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    { 0x1201, 29, 26, 0 },
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    { 0x1101, 30, 27, 0 },
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    { 0x0AC1, 31, 28, 0 },
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    { 0x09C1, 32, 29, 0 },
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    { 0x08A1, 33, 30, 0 },
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    { 0x0521, 34, 31, 0 },
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    { 0x0441, 35, 32, 0 },
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    { 0x02A1, 36, 33, 0 },
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    { 0x0221, 37, 34, 0 },
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    { 0x0141, 38, 35, 0 },
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    { 0x0111, 39, 36, 0 },
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    { 0x0085, 40, 37, 0 },
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    { 0x0049, 41, 38, 0 },
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    { 0x0025, 42, 39, 0 },
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    { 0x0015, 43, 40, 0 },
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    { 0x0009, 44, 41, 0 },
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    { 0x0005, 45, 42, 0 },
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    { 0x0001, 45, 43, 0 },
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    { 0x5601, 46, 46, 0 }
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};
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uint16_t ff_mqc_qe [2 * 47];
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uint8_t ff_mqc_nlps[2 * 47];
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uint8_t ff_mqc_nmps[2 * 47];
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void av_cold ff_mqc_init_context_tables(void)
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{
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    int i;
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    for (i = 0; i < 47; i++) {
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        ff_mqc_qe[2 * i]     =
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        ff_mqc_qe[2 * i + 1] = cx_states[i].qe;
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        ff_mqc_nlps[2 * i]     = 2 * cx_states[i].nlps + cx_states[i].sw;
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        ff_mqc_nlps[2 * i + 1] = 2 * cx_states[i].nlps + 1 - cx_states[i].sw;
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        ff_mqc_nmps[2 * i]     = 2 * cx_states[i].nmps;
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        ff_mqc_nmps[2 * i + 1] = 2 * cx_states[i].nmps + 1;
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    }
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}
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void ff_mqc_init_contexts(MqcState *mqc)
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{
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776128
    memset(mqc->cx_states, 0, sizeof(mqc->cx_states));
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    mqc->cx_states[MQC_CX_UNI] = 2 * 46;
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    mqc->cx_states[MQC_CX_RL]  = 2 * 3;
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    mqc->cx_states[0]          = 2 * 4;
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776128
}