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 **********************************************************************************/ 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 Word32 *pSumMS = sfbEnergySumMS.sfbShort; 103 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
