mpv/libfaad2/codebook/hcb_6.h

/*
** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
** Copyright (C) 2003 M. Bakker, Ahead Software AG, http://www.nero.com
**  
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
** 
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
** 
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software 
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
**
** Any non-GPL usage of this software or parts of this software is strictly
** forbidden.
**
** Commercial non-GPL licensing of this software is possible.
** For more info contact Ahead Software through Mpeg4AAClicense@nero.com.
**
** $Id: hcb_6.h,v 1.3 2003/09/09 18:12:01 menno Exp $
**/

/* 2-step huffman table HCB_6 */


/* 1st step: 5 bits
 *           2^5 = 32 entries
 *
 * Used to find offset into 2nd step table and number of extra bits to get
 */
static hcb hcb6_1[] = {
    /* 4 bit codewords */
    { /* 00000 */ 0, 0 },
    { /*       */ 0, 0 },
    { /* 00010 */ 1, 0 },
    { /*       */ 1, 0 },
    { /* 00100 */ 2, 0 },
    { /*       */ 2, 0 },
    { /* 00110 */ 3, 0 },
    { /*       */ 3, 0 },
    { /* 01000 */ 4, 0 },
    { /*       */ 4, 0 },
    { /* 01010 */ 5, 0 },
    { /*       */ 5, 0 },
    { /* 01100 */ 6, 0 },
    { /*       */ 6, 0 },
    { /* 01110 */ 7, 0 },
    { /*       */ 7, 0 },
    { /* 10000 */ 8, 0 },
    { /*       */ 8, 0 },

    /* 6 bit codewords */
    { /* 10010 */ 9, 1 },
    { /* 10011 */ 11, 1 },
    { /* 10100 */ 13, 1 },
    { /* 10101 */ 15, 1 },
    { /* 10110 */ 17, 1 },
    { /* 10111 */ 19, 1 },
    { /* 11000 */ 21, 1 },
    { /* 11001 */ 23, 1 },

    /* 7 bit codewords */
    { /* 11010 */ 25, 2 },
    { /* 11011 */ 29, 2 },
    { /* 11100 */ 33, 2 },

    /* 7/8 bit codewords */
    { /* 11101 */ 37, 3 },

    /* 8/9 bit codewords */
    { /* 11110 */ 45, 4 },

    /* 9/10/11 bit codewords */
    { /* 11111 */ 61, 6 }
};

/* 2nd step table
 *
 * Gives size of codeword and actual data (x,y,v,w)
 */
static hcb_2_pair hcb6_2[] = {
    /* 4 bit codewords */
    { 4,  0,  0 },
    { 4,  1,  0 },
    { 4,  0, -1 },
    { 4,  0,  1 },
    { 4, -1,  0 },
    { 4,  1,  1 },
    { 4, -1,  1 },
    { 4,  1, -1 },
    { 4, -1, -1 },

    /* 6 bit codewords */
    { 6,  2, -1 },
    { 6,  2,  1 },
    { 6, -2,  1 },
    { 6, -2, -1 },
    { 6, -2,  0 },
    { 6, -1,  2 },
    { 6,  2,  0 },
    { 6,  1, -2 },
    { 6,  1,  2 },
    { 6,  0, -2 },
    { 6, -1, -2 },
    { 6,  0,  2 },
    { 6,  2, -2 },
    { 6, -2,  2 },
    { 6, -2, -2 },
    { 6,  2,  2 },

    /* 7 bit codewords */
    { 7, -3,  1 },
    { 7,  3,  1 },
    { 7,  3, -1 },
    { 7, -1,  3 },
    { 7, -3, -1 },
    { 7,  1,  3 },
    { 7,  1, -3 },
    { 7, -1, -3 },
    { 7,  3,  0 },
    { 7, -3,  0 },
    { 7,  0, -3 },
    { 7,  0,  3 },

    /* 7/8 bit codewords */
    { 7,  3,  2 }, { 7,  3,  2 },
    { 8, -3, -2 },
    { 8, -2,  3 },
    { 8,  2,  3 },
    { 8,  3, -2 },
    { 8,  2, -3 },
    { 8, -2, -3 },

    /* 8 bit codewords */
    { 8, -3,  2 }, { 8, -3,  2 },
    { 8,  3,  3 }, { 8,  3,  3 },
    { 9,  3, -3 },
    { 9, -3, -3 },
    { 9, -3,  3 },
    { 9,  1, -4 },
    { 9, -1, -4 },
    { 9,  4,  1 },
    { 9, -4,  1 },
    { 9, -4, -1 },
    { 9,  1,  4 },
    { 9,  4, -1 },
    { 9, -1,  4 },
    { 9,  0, -4 },

    /* 9/10/11 bit codewords */
    { 9, -4,  2 }, { 9, -4,  2 }, { 9, -4,  2 }, { 9, -4,  2 },
    { 9, -4, -2 }, { 9, -4, -2 }, { 9, -4, -2 }, { 9, -4, -2 },
    { 9,  2,  4 }, { 9,  2,  4 }, { 9,  2,  4 }, { 9,  2,  4 },
    { 9, -2, -4 }, { 9, -2, -4 }, { 9, -2, -4 }, { 9, -2, -4 },
    { 9, -4,  0 }, { 9, -4,  0 }, { 9, -4,  0 }, { 9, -4,  0 },
    { 9,  4,  2 }, { 9,  4,  2 }, { 9,  4,  2 }, { 9,  4,  2 },
    { 9,  4, -2 }, { 9,  4, -2 }, { 9,  4, -2 }, { 9,  4, -2 },
    { 9, -2,  4 }, { 9, -2,  4 }, { 9, -2,  4 }, { 9, -2,  4 },
    { 9,  4,  0 }, { 9,  4,  0 }, { 9,  4,  0 }, { 9,  4,  0 },
    { 9,  2, -4 }, { 9,  2, -4 }, { 9,  2, -4 }, { 9,  2, -4 },
    { 9,  0,  4 }, { 9,  0,  4 }, { 9,  0,  4 }, { 9,  0,  4 },
    { 10, -3, -4 }, { 10, -3, -4 },
    { 10, -3,  4 }, { 10, -3,  4 },
    { 10,  3, -4 }, { 10,  3, -4 },
    { 10,  4, -3 }, { 10,  4, -3 },
    { 10,  3,  4 }, { 10,  3,  4 },
    { 10,  4,  3 }, { 10,  4,  3 },
    { 10, -4,  3 }, { 10, -4,  3 },
    { 10, -4, -3 }, { 10, -4, -3 },
    { 11,  4,  4 },
    { 11, -4,  4 },
    { 11, -4, -4 },
    { 11,  4, -4 }
};