ref: 9831e451d4dffcfe05f7d8d60e3c96c8f04d7eef
dir: /libfaad/codebook/hcb_2.h/
/* ** FAAD - Freeware Advanced Audio Decoder ** Copyright (C) 2002 M. Bakker ** ** 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. ** ** $Id: hcb_2.h,v 1.1 2003/05/18 18:14:38 menno Exp $ **/ /* 2-step huffman table HCB_2 */ /* 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 hcb2_1[] = { { /* 00000 */ 0, 0 }, { /* */ 0, 0 }, { /* */ 0, 0 }, { /* */ 0, 0 }, { /* 00100 */ 1, 0 }, { /* */ 1, 0 }, { /* 00110 */ 2, 0 }, { /* 00111 */ 3, 0 }, { /* 01000 */ 4, 0 }, { /* 01001 */ 5, 0 }, { /* 01010 */ 6, 0 }, { /* 01011 */ 7, 0 }, { /* 01100 */ 8, 0 }, /* 6 bit codewords */ { /* 01101 */ 9, 1 }, { /* 01110 */ 11, 1 }, { /* 01111 */ 13, 1 }, { /* 10000 */ 15, 1 }, { /* 10001 */ 17, 1 }, { /* 10010 */ 19, 1 }, { /* 10011 */ 21, 1 }, { /* 10100 */ 23, 1 }, { /* 10101 */ 25, 1 }, { /* 10110 */ 27, 1 }, { /* 10111 */ 29, 1 }, { /* 11000 */ 31, 1 }, /* 7 bit codewords */ { /* 11001 */ 33, 2 }, { /* 11010 */ 37, 2 }, { /* 11011 */ 41, 2 }, /* 7/8 bit codewords */ { /* 11100 */ 45, 3 }, /* 8 bit codewords */ { /* 11101 */ 53, 3 }, { /* 11110 */ 61, 3 }, /* 8/9 bit codewords */ { /* 11111 */ 69, 4 } }; /* 2nd step table * * Gives size of codeword and actual data (x,y,v,w) */ static hcb_2_quad hcb2_2[] = { /* 3 bit codeword */ { 3, 0, 0, 0, 0 }, /* 4 bit codeword */ { 4, 1, 0, 0, 0 }, /* 5 bit codewords */ { 5, -1, 0, 0, 0 }, { 5, 0, 0, 0, 1 }, { 5, 0, 0, -1, 0 }, { 5, 0, 0, 0, -1 }, { 5, 0, -1, 0, 0 }, { 5, 0, 0, 1, 0 }, { 5, 0, 1, 0, 0 }, /* 6 bit codewords */ { 6, 0, -1, 1, 0 }, { 6, -1, 1, 0, 0 }, { 6, 0, 1, -1, 0 }, { 6, 0, 0, 1, -1 }, { 6, 0, 1, 0, -1 }, { 6, 0, 0, -1, 1 }, { 6, -1, 0, 0, -1 }, { 6, 1, -1, 0, 0 }, { 6, 1, 0, -1, 0 }, { 6, -1, -1, 0, 0 }, { 6, 0, 0, -1, -1 }, { 6, 1, 0, 1, 0 }, { 6, 1, 0, 0, 1 }, { 6, 0, -1, 0, 1 }, { 6, -1, 0, 1, 0 }, { 6, 0, 1, 0, 1 }, { 6, 0, -1, -1, 0 }, { 6, -1, 0, 0, 1 }, { 6, 0, -1, 0, -1 }, { 6, -1, 0, -1, 0 }, { 6, 1, 1, 0, 0 }, { 6, 0, 1, 1, 0 }, { 6, 0, 0, 1, 1 }, { 6, 1, 0, 0, -1 }, /* 7 bit codewords */ { 7, 0, 1, -1, 1 }, { 7, 1, 0, -1, 1 }, { 7, -1, 1, -1, 0 }, { 7, 0, -1, 1, -1 }, { 7, 1, -1, 1, 0 }, { 7, 1, 1, 0, -1 }, { 7, 1, 0, 1, 1 }, { 7, -1, 1, 1, 0 }, { 7, 0, -1, -1, 1 }, { 7, 1, 1, 1, 0 }, { 7, -1, 0, 1, -1 }, { 7, -1, -1, -1, 0 }, /* 7/8 bit codewords */ { 7, -1, 0, -1, 1 }, { 7, -1, 0, -1, 1 }, { 7, 1, -1, -1, 0 }, { 7, 1, -1, -1, 0 }, { 7, 1, 1, -1, 0 }, { 7, 1, 1, -1, 0 }, { 8, 1, -1, 0, 1 }, { 8, -1, 1, 0, -1 }, /* 8 bit codewords */ { 8, -1, -1, 1, 0 }, { 8, -1, 0, 1, 1 }, { 8, -1, -1, 0, 1 }, { 8, -1, -1, 0, -1 }, { 8, 0, -1, -1, -1 }, { 8, 1, 0, 1, -1 }, { 8, 1, 0, -1, -1 }, { 8, 0, 1, -1, -1 }, { 8, 0, 1, 1, 1 }, { 8, -1, 1, 0, 1 }, { 8, -1, 0, -1, -1 }, { 8, 0, 1, 1, -1 }, { 8, 1, -1, 0, -1 }, { 8, 0, -1, 1, 1 }, { 8, 1, 1, 0, 1 }, { 8, 1, -1, 1, -1 }, /* 8/9 bit codewords */ { 8, -1, 1, -1, 1 }, { 8, -1, 1, -1, 1 }, { 9, 1, -1, -1, 1 }, { 9, -1, -1, -1, -1 }, { 9, -1, 1, 1, -1 }, { 9, -1, 1, 1, 1 }, { 9, 1, 1, 1, 1 }, { 9, -1, -1, 1, -1 }, { 9, 1, -1, 1, 1 }, { 9, -1, 1, -1, -1 }, { 9, -1, -1, 1, 1 }, { 9, 1, 1, -1, -1 }, { 9, 1, -1, -1, -1 }, { 9, -1, -1, -1, 1 }, { 9, 1, 1, -1, 1 }, { 9, 1, 1, 1, -1 } };