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Diffstat (limited to 'src/libfaad/codebook/hcb_1.c')
| -rw-r--r-- | src/libfaad/codebook/hcb_1.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/libfaad/codebook/hcb_1.c b/src/libfaad/codebook/hcb_1.c new file mode 100644 index 000000000..b682733a2 --- /dev/null +++ b/src/libfaad/codebook/hcb_1.c @@ -0,0 +1,180 @@ +/* +** 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_1.c,v 1.1 2002/07/14 23:33:35 miguelfreitas Exp $ +**/ + +#include "../common.h" +#include "hcb.h" + +/* 2-step huffman table HCB_1 */ + + +/* 1st step: 5 bits + * 2^5 = 32 entries + * + * Used to find offset into 2nd step table and number of extra bits to get + */ +extern hcb hcb1_1[] = { + { /* 00000 */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* */ 0, 0 }, + { /* 10000 */ 1, 0 }, + { /* 10001 */ 2, 0 }, + { /* 10010 */ 3, 0 }, + { /* 10011 */ 4, 0 }, + { /* 10100 */ 5, 0 }, + { /* 10101 */ 6, 0 }, + { /* 10110 */ 7, 0 }, + { /* 10111 */ 8, 0 }, + + /* 7 bit codewords */ + { /* 11000 */ 9, 2 }, + { /* 11001 */ 13, 2 }, + { /* 11010 */ 17, 2 }, + { /* 11011 */ 21, 2 }, + { /* 11100 */ 25, 2 }, + { /* 11101 */ 29, 2 }, + + /* 9 bit codewords */ + { /* 11110 */ 33, 4 }, + + /* 9/10/11 bit codewords */ + { /* 11111 */ 49, 6 } +}; + +/* 2nd step table + * + * Gives size of codeword and actual data (x,y,v,w) + */ +extern hcb_2_quad hcb1_2[] = { + /* 1 bit codeword */ + { 1, 0, 0, 0, 0 }, + + /* 5 bit codewords */ + { 5, 1, 0, 0, 0 }, + { 5, -1, 0, 0, 0 }, + { 5, 0, 0, 0, -1 }, + { 5, 0, 1, 0, 0 }, + { 5, 0, 0, 0, 1 }, + { 5, 0, 0, -1, 0 }, + { 5, 0, 0, 1, 0 }, + { 5, 0, -1, 0, 0 }, + + /* 7 bit codewords */ + /* first 5 bits: 11000 */ + { 7, 1, -1, 0, 0 }, + { 7, -1, 1, 0, 0 }, + { 7, 0, 0, -1, 1 }, + { 7, 0, 1, -1, 0 }, + /* first 5 bits: 11001 */ + { 7, 0, -1, 1, 0 }, + { 7, 0, 0, 1, -1 }, + { 7, 1, 1, 0, 0 }, + { 7, 0, 0, -1, -1 }, + /* first 5 bits: 11010 */ + { 7, -1, -1, 0, 0 }, + { 7, 0, -1, -1, 0 }, + { 7, 1, 0, -1, 0 }, + { 7, 0, 1, 0, -1 }, + /* first 5 bits: 11011 */ + { 7, -1, 0, 1, 0 }, + { 7, 0, 0, 1, 1 }, + { 7, 1, 0, 1, 0 }, + { 7, 0, -1, 0, 1 }, + /* first 5 bits: 11100 */ + { 7, 0, 1, 1, 0 }, + { 7, 0, 1, 0, 1 }, + { 7, -1, 0, -1, 0 }, + { 7, 1, 0, 0, 1 }, + /* first 5 bits: 11101 */ + { 7, -1, 0, 0, -1 }, + { 7, 1, 0, 0, -1 }, + { 7, -1, 0, 0, 1 }, + { 7, 0, -1, 0, -1 }, + + /* 9 bit codeword */ + /* first 5 bits: 11110 */ + { 9, 1, 1, -1, 0 }, + { 9, -1, 1, -1, 0 }, + { 9, 1, -1, 1, 0 }, + { 9, 0, 1, 1, -1 }, + { 9, 0, 1, -1, 1 }, + { 9, 0, -1, 1, 1 }, + { 9, 0, -1, 1, -1 }, + { 9, 1, -1, -1, 0 }, + { 9, 1, 0, -1, 1 }, + { 9, 0, 1, -1, -1 }, + { 9, -1, 1, 1, 0 }, + { 9, -1, 0, 1, -1 }, + { 9, -1, -1, 1, 0 }, + { 9, 0, -1, -1, 1 }, + { 9, 1, -1, 0, 1 }, + { 9, 1, -1, 0, -1 }, + + /* 9/10/11 bit codewords */ + /* first 5 bits: 11111 */ + /* 9 bit: reading 11 bits -> 2 too much so 4 entries for each codeword */ + { 9, -1, 1, 0, -1 }, { 9, -1, 1, 0, -1 }, { 9, -1, 1, 0, -1 }, { 9, -1, 1, 0, -1 }, + { 9, -1, -1, -1, 0 }, { 9, -1, -1, -1, 0 }, { 9, -1, -1, -1, 0 }, { 9, -1, -1, -1, 0 }, + { 9, 0, -1, -1, -1 }, { 9, 0, -1, -1, -1 }, { 9, 0, -1, -1, -1 }, { 9, 0, -1, -1, -1 }, + { 9, 0, 1, 1, 1 }, { 9, 0, 1, 1, 1 }, { 9, 0, 1, 1, 1 }, { 9, 0, 1, 1, 1 }, + { 9, 1, 0, 1, -1 }, { 9, 1, 0, 1, -1 }, { 9, 1, 0, 1, -1 }, { 9, 1, 0, 1, -1 }, + { 9, 1, 1, 0, 1 }, { 9, 1, 1, 0, 1 }, { 9, 1, 1, 0, 1 }, { 9, 1, 1, 0, 1 }, + { 9, -1, 1, 0, 1 }, { 9, -1, 1, 0, 1 }, { 9, -1, 1, 0, 1 }, { 9, -1, 1, 0, 1 }, + { 9, 1, 1, 1, 0 }, { 9, 1, 1, 1, 0 }, { 9, 1, 1, 1, 0 }, { 9, 1, 1, 1, 0 }, + /* 10 bit: reading 11 bits -> 1 too much so 2 entries for each codeword */ + { 10, -1, -1, 0, 1 }, { 10, -1, -1, 0, 1 }, + { 10, -1, 0, -1, -1 }, { 10, -1, 0, -1, -1 }, + { 10, 1, 1, 0, -1 }, { 10, 1, 1, 0, -1 }, + { 10, 1, 0, -1, -1 }, { 10, 1, 0, -1, -1 }, + { 10, -1, 0, -1, 1 }, { 10, -1, 0, -1, 1 }, + { 10, -1, -1, 0, -1 }, { 10, -1, -1, 0, -1 }, + { 10, -1, 0, 1, 1 }, { 10, -1, 0, 1, 1 }, + { 10, 1, 0, 1, 1 }, { 10, 1, 0, 1, 1 }, + /* 11 bit */ + { 11, 1, -1, 1, -1 }, + { 11, -1, 1, -1, 1 }, + { 11, -1, 1, 1, -1 }, + { 11, 1, -1, -1, 1 }, + { 11, 1, 1, 1, 1 }, + { 11, -1, -1, 1, 1 }, + { 11, 1, 1, -1, -1 }, + { 11, -1, -1, 1, -1 }, + { 11, -1, -1, -1, -1 }, + { 11, 1, 1, -1, 1 }, + { 11, 1, -1, 1, 1 }, + { 11, -1, 1, 1, 1 }, + { 11, -1, 1, -1, -1 }, + { 11, -1, -1, -1, 1 }, + { 11, 1, -1, -1, -1 }, + { 11, 1, 1, 1, -1 } +}; |