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: interface.c
18
19 Content: Interface psychoaccoustic/quantizer functions
20
21 *******************************************************************************/
22
23 #include "basic_op.h"
24 #include "oper_32b.h"
25 #include "psy_const.h"
26 #include "interface.h"
27
28 /*****************************************************************************
29 *
30 * function name: BuildInterface
31 * description: update output parameter
32 *
33 **********************************************************************************/
BuildInterface(Word32 * groupedMdctSpectrum,const Word16 mdctScale,SFB_THRESHOLD * groupedSfbThreshold,SFB_ENERGY * groupedSfbEnergy,SFB_ENERGY * groupedSfbSpreadedEnergy,const SFB_ENERGY_SUM sfbEnergySumLR,const SFB_ENERGY_SUM sfbEnergySumMS,const Word16 windowSequence,const Word16 windowShape,const Word16 groupedSfbCnt,const Word16 * groupedSfbOffset,const Word16 maxSfbPerGroup,const Word16 * groupedSfbMinSnr,const Word16 noOfGroups,const Word16 * groupLen,PSY_OUT_CHANNEL * psyOutCh)34 void BuildInterface(Word32 *groupedMdctSpectrum,
35 const Word16 mdctScale,
36 SFB_THRESHOLD *groupedSfbThreshold,
37 SFB_ENERGY *groupedSfbEnergy,
38 SFB_ENERGY *groupedSfbSpreadedEnergy,
39 const SFB_ENERGY_SUM sfbEnergySumLR,
40 const SFB_ENERGY_SUM sfbEnergySumMS,
41 const Word16 windowSequence,
42 const Word16 windowShape,
43 const Word16 groupedSfbCnt,
44 const Word16 *groupedSfbOffset,
45 const Word16 maxSfbPerGroup,
46 const Word16 *groupedSfbMinSnr,
47 const Word16 noOfGroups,
48 const Word16 *groupLen,
49 PSY_OUT_CHANNEL *psyOutCh)
50 {
51 Word32 j;
52 Word32 grp;
53 Word32 mask;
54 Word16 *tmpV;
55
56 /*
57 copy values to psyOut
58 */
59 psyOutCh->maxSfbPerGroup = maxSfbPerGroup;
60 psyOutCh->sfbCnt = groupedSfbCnt;
61 if(noOfGroups)
62 psyOutCh->sfbPerGroup = groupedSfbCnt/ noOfGroups;
63 else
64 psyOutCh->sfbPerGroup = 0x7fff;
65 psyOutCh->windowSequence = windowSequence;
66 psyOutCh->windowShape = windowShape;
67 psyOutCh->mdctScale = mdctScale;
68 psyOutCh->mdctSpectrum = groupedMdctSpectrum;
69 psyOutCh->sfbEnergy = groupedSfbEnergy->sfbLong;
70 psyOutCh->sfbThreshold = groupedSfbThreshold->sfbLong;
71 psyOutCh->sfbSpreadedEnergy = groupedSfbSpreadedEnergy->sfbLong;
72
73 tmpV = psyOutCh->sfbOffsets;
74 for(j=0; j<groupedSfbCnt + 1; j++) {
75 *tmpV++ = groupedSfbOffset[j];
76 }
77
78 tmpV = psyOutCh->sfbMinSnr;
79 for(j=0;j<groupedSfbCnt; j++) {
80 *tmpV++ = groupedSfbMinSnr[j];
81 }
82
83 /* generate grouping mask */
84 mask = 0;
85 for (grp = 0; grp < noOfGroups; grp++) {
86 mask = mask << 1;
87 for (j=1; j<groupLen[grp]; j++) {
88 mask = mask << 1;
89 mask |= 1;
90 }
91 }
92 psyOutCh->groupingMask = mask;
93
94 if (windowSequence != SHORT_WINDOW) {
95 psyOutCh->sfbEnSumLR = sfbEnergySumLR.sfbLong;
96 psyOutCh->sfbEnSumMS = sfbEnergySumMS.sfbLong;
97 }
98 else {
99 Word32 i;
100 Word32 accuSumMS=0;
101 Word32 accuSumLR=0;
102 const Word32 *pSumMS = sfbEnergySumMS.sfbShort;
103 const Word32 *pSumLR = sfbEnergySumLR.sfbShort;
104
105 for (i=TRANS_FAC; i; i--) {
106 accuSumLR = L_add(accuSumLR, *pSumLR); pSumLR++;
107 accuSumMS = L_add(accuSumMS, *pSumMS); pSumMS++;
108 }
109 psyOutCh->sfbEnSumMS = accuSumMS;
110 psyOutCh->sfbEnSumLR = accuSumLR;
111 }
112 }
113