dyn_bits.h revision 41050cdb033641ddf26831d9272c0930f7b40a2d 
1/*
2 ** Copyright 2003-2010, VisualOn, Inc.
3 **
4 ** Licensed under the Apache License, Version 2.0 (the "License");
5 ** you may not use this file except in compliance with the License.
6 ** You may obtain a copy of the License at
7 **
8 **     http://www.apache.org/licenses/LICENSE-2.0
9 **
10 ** Unless required by applicable law or agreed to in writing, software
11 ** distributed under the License is distributed on an "AS IS" BASIS,
12 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 ** See the License for the specific language governing permissions and
14 ** limitations under the License.
15 */
16/*******************************************************************************
17	File:		dyn_bits.h
18
19	Content:	Noiseless coder module structure and functions
20
21*******************************************************************************/
22
23#ifndef __DYN_BITS_H
24#define __DYN_BITS_H
25
26#include "psy_const.h"
27#include "tns.h"
28#include "bit_cnt.h"
29
30
31
32#define MAX_SECTIONS          MAX_GROUPED_SFB
33#define SECT_ESC_VAL_LONG    31
34#define SECT_ESC_VAL_SHORT    7
35#define CODE_BOOK_BITS        4
36#define SECT_BITS_LONG        5
37#define SECT_BITS_SHORT       3
38
39typedef struct
40{
41  Word16 codeBook;
42  Word16 sfbStart;
43  Word16 sfbCnt;
44  Word16 sectionBits;
45}
46SECTION_INFO;
47
48
49
50
51typedef struct
52{
53  Word16 blockType;
54  Word16 noOfGroups;
55  Word16 sfbCnt;
56  Word16 maxSfbPerGroup;
57  Word16 sfbPerGroup;
58  Word16 noOfSections;
59  SECTION_INFO sectionInfo[MAX_SECTIONS];
60  Word16 sideInfoBits;             /* sectioning bits       */
61  Word16 huffmanBits;              /* huffman    coded bits */
62  Word16 scalefacBits;             /* scalefac   coded bits */
63  Word16 firstScf;                 /* first scf to be coded */
64  Word16 bitLookUp[MAX_SFB_LONG*(CODE_BOOK_ESC_NDX+1)];
65  Word16 mergeGainLookUp[MAX_SFB_LONG];
66}
67SECTION_DATA; /*  Word16 size: 10 + 60(MAX_SECTIONS)*4(SECTION_INFO) + 51(MAX_SFB_LONG)*12(CODE_BOOK_ESC_NDX+1) + 51(MAX_SFB_LONG) = 913 */
68
69
70Word16 BCInit(void);
71
72Word16 dynBitCount(const Word16 *quantSpectrum,
73                   const UWord16 *maxValueInSfb,
74                   const Word16 *scalefac,
75                   const Word16 blockType,
76                   const Word16 sfbCnt,
77                   const Word16 maxSfbPerGroup,
78                   const Word16 sfbPerGroup,
79                   const Word16 *sfbOffset,
80                   SECTION_DATA *sectionData);
81
82#endif
83