path: root/audio_codec/libfaad/codebook/hcb_2.h (plain)
blob: 0d9fb5171f10e37250726e0bd61da3fb015ee84c

1	/*
2	** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
3	** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
4	**
5	** This program is free software; you can redistribute it and/or modify
6	** it under the terms of the GNU General Public License as published by
7	** the Free Software Foundation; either version 2 of the License, or
8	** (at your option) any later version.
9	**
10	** This program is distributed in the hope that it will be useful,
11	** but WITHOUT ANY WARRANTY; without even the implied warranty of
12	** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13	** GNU General Public License for more details.
14	**
15	** You should have received a copy of the GNU General Public License
16	** along with this program; if not, write to the Free Software
17	** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18	**
19	** Any non-GPL usage of this software or parts of this software is strictly
20	** forbidden.
21	**
22	** The "appropriate copyright message" mentioned in section 2c of the GPLv2
23	** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
24	**
25	** Commercial non-GPL licensing of this software is possible.
26	** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
27	**
28	** $Id: hcb_2.h,v 1.5 2007/11/01 12:34:11 menno Exp $
29	**/
30
31	/* 2-step huffman table HCB_2 */
32
33
34	/* 1st step: 5 bits
35	* 2^5 = 32 entries
36	*
37	* Used to find offset into 2nd step table and number of extra bits to get
38	*/
39	static hcb hcb2_1[] = {
40	{ /* 00000 */ 0, 0 },
41	{ /* */ 0, 0 },
42	{ /* */ 0, 0 },
43	{ /* */ 0, 0 },
44	{ /* 00100 */ 1, 0 },
45	{ /* */ 1, 0 },
46	{ /* 00110 */ 2, 0 },
47	{ /* 00111 */ 3, 0 },
48	{ /* 01000 */ 4, 0 },
49	{ /* 01001 */ 5, 0 },
50	{ /* 01010 */ 6, 0 },
51	{ /* 01011 */ 7, 0 },
52	{ /* 01100 */ 8, 0 },
53
54	/* 6 bit codewords */
55	{ /* 01101 */ 9, 1 },
56	{ /* 01110 */ 11, 1 },
57	{ /* 01111 */ 13, 1 },
58	{ /* 10000 */ 15, 1 },
59	{ /* 10001 */ 17, 1 },
60	{ /* 10010 */ 19, 1 },
61	{ /* 10011 */ 21, 1 },
62	{ /* 10100 */ 23, 1 },
63	{ /* 10101 */ 25, 1 },
64	{ /* 10110 */ 27, 1 },
65	{ /* 10111 */ 29, 1 },
66	{ /* 11000 */ 31, 1 },
67
68	/* 7 bit codewords */
69	{ /* 11001 */ 33, 2 },
70	{ /* 11010 */ 37, 2 },
71	{ /* 11011 */ 41, 2 },
72
73	/* 7/8 bit codewords */
74	{ /* 11100 */ 45, 3 },
75
76	/* 8 bit codewords */
77	{ /* 11101 */ 53, 3 },
78	{ /* 11110 */ 61, 3 },
79
80	/* 8/9 bit codewords */
81	{ /* 11111 */ 69, 4 }
82	};
83
84	/* 2nd step table
85	*
86	* Gives size of codeword and actual data (x,y,v,w)
87	*/
88	static hcb_2_quad hcb2_2[] = {
89	/* 3 bit codeword */
90	{ 3, 0, 0, 0, 0 },
91
92	/* 4 bit codeword */
93	{ 4, 1, 0, 0, 0 },
94
95	/* 5 bit codewords */
96	{ 5, -1, 0, 0, 0 },
97	{ 5, 0, 0, 0, 1 },
98	{ 5, 0, 0, -1, 0 },
99	{ 5, 0, 0, 0, -1 },
100	{ 5, 0, -1, 0, 0 },
101	{ 5, 0, 0, 1, 0 },
102	{ 5, 0, 1, 0, 0 },
103
104	/* 6 bit codewords */
105	{ 6, 0, -1, 1, 0 },
106	{ 6, -1, 1, 0, 0 },
107	{ 6, 0, 1, -1, 0 },
108	{ 6, 0, 0, 1, -1 },
109	{ 6, 0, 1, 0, -1 },
110	{ 6, 0, 0, -1, 1 },
111	{ 6, -1, 0, 0, -1 },
112	{ 6, 1, -1, 0, 0 },
113	{ 6, 1, 0, -1, 0 },
114	{ 6, -1, -1, 0, 0 },
115	{ 6, 0, 0, -1, -1 },
116	{ 6, 1, 0, 1, 0 },
117	{ 6, 1, 0, 0, 1 },
118	{ 6, 0, -1, 0, 1 },
119	{ 6, -1, 0, 1, 0 },
120	{ 6, 0, 1, 0, 1 },
121	{ 6, 0, -1, -1, 0 },
122	{ 6, -1, 0, 0, 1 },
123	{ 6, 0, -1, 0, -1 },
124	{ 6, -1, 0, -1, 0 },
125	{ 6, 1, 1, 0, 0 },
126	{ 6, 0, 1, 1, 0 },
127	{ 6, 0, 0, 1, 1 },
128	{ 6, 1, 0, 0, -1 },
129
130	/* 7 bit codewords */
131	{ 7, 0, 1, -1, 1 },
132	{ 7, 1, 0, -1, 1 },
133	{ 7, -1, 1, -1, 0 },
134	{ 7, 0, -1, 1, -1 },
135	{ 7, 1, -1, 1, 0 },
136	{ 7, 1, 1, 0, -1 },
137	{ 7, 1, 0, 1, 1 },
138	{ 7, -1, 1, 1, 0 },
139	{ 7, 0, -1, -1, 1 },
140	{ 7, 1, 1, 1, 0 },
141	{ 7, -1, 0, 1, -1 },
142	{ 7, -1, -1, -1, 0 },
143
144	/* 7/8 bit codewords */
145	{ 7, -1, 0, -1, 1 }, { 7, -1, 0, -1, 1 },
146	{ 7, 1, -1, -1, 0 }, { 7, 1, -1, -1, 0 },
147	{ 7, 1, 1, -1, 0 }, { 7, 1, 1, -1, 0 },
148	{ 8, 1, -1, 0, 1 },
149	{ 8, -1, 1, 0, -1 },
150
151	/* 8 bit codewords */
152	{ 8, -1, -1, 1, 0 },
153	{ 8, -1, 0, 1, 1 },
154	{ 8, -1, -1, 0, 1 },
155	{ 8, -1, -1, 0, -1 },
156	{ 8, 0, -1, -1, -1 },
157	{ 8, 1, 0, 1, -1 },
158	{ 8, 1, 0, -1, -1 },
159	{ 8, 0, 1, -1, -1 },
160	{ 8, 0, 1, 1, 1 },
161	{ 8, -1, 1, 0, 1 },
162	{ 8, -1, 0, -1, -1 },
163	{ 8, 0, 1, 1, -1 },
164	{ 8, 1, -1, 0, -1 },
165	{ 8, 0, -1, 1, 1 },
166	{ 8, 1, 1, 0, 1 },
167	{ 8, 1, -1, 1, -1 },
168
169	/* 8/9 bit codewords */
170	{ 8, -1, 1, -1, 1 }, { 8, -1, 1, -1, 1 },
171	{ 9, 1, -1, -1, 1 },
172	{ 9, -1, -1, -1, -1 },
173	{ 9, -1, 1, 1, -1 },
174	{ 9, -1, 1, 1, 1 },
175	{ 9, 1, 1, 1, 1 },
176	{ 9, -1, -1, 1, -1 },
177	{ 9, 1, -1, 1, 1 },
178	{ 9, -1, 1, -1, -1 },
179	{ 9, -1, -1, 1, 1 },
180	{ 9, 1, 1, -1, -1 },
181	{ 9, 1, -1, -1, -1 },
182	{ 9, -1, -1, -1, 1 },
183	{ 9, 1, 1, -1, 1 },
184	{ 9, 1, 1, 1, -1 }
185	};
186