diff options
Diffstat (limited to 'media/libstagefright/codecs/aacenc/src/interface.c')
| -rw-r--r-- | media/libstagefright/codecs/aacenc/src/interface.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/aacenc/src/interface.c b/media/libstagefright/codecs/aacenc/src/interface.c new file mode 100644 index 0000000..304b1d4 --- /dev/null +++ b/media/libstagefright/codecs/aacenc/src/interface.c @@ -0,0 +1,112 @@ +/*
+ ** Copyright 2003-2010, VisualOn, Inc.
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ ** http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+/*******************************************************************************
+ File: interface.c
+
+ Content: Interface psychoaccoustic/quantizer functions
+
+*******************************************************************************/ + +#include "basic_op.h"
+#include "oper_32b.h"
+#include "psy_const.h" +#include "interface.h" + +/***************************************************************************** +* +* function name: BuildInterface +* description: update output parameter +* +**********************************************************************************/ +void 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) +{ + Word32 j; + Word32 grp; + Word32 mask;
+ Word16 *tmpV; + + /* + copy values to psyOut + */ + psyOutCh->maxSfbPerGroup = maxSfbPerGroup; + psyOutCh->sfbCnt = groupedSfbCnt; + if(noOfGroups) + psyOutCh->sfbPerGroup = groupedSfbCnt/ noOfGroups; + else + psyOutCh->sfbPerGroup = 0x7fff; + psyOutCh->windowSequence = windowSequence; + psyOutCh->windowShape = windowShape; + psyOutCh->mdctScale = mdctScale; + psyOutCh->mdctSpectrum = groupedMdctSpectrum; + psyOutCh->sfbEnergy = groupedSfbEnergy->sfbLong; + psyOutCh->sfbThreshold = groupedSfbThreshold->sfbLong; + psyOutCh->sfbSpreadedEnergy = groupedSfbSpreadedEnergy->sfbLong; + + tmpV = psyOutCh->sfbOffsets;
+ for(j=0; j<groupedSfbCnt + 1; j++) { + *tmpV++ = groupedSfbOffset[j]; + } +
+ tmpV = psyOutCh->sfbMinSnr; + for(j=0;j<groupedSfbCnt; j++) { + *tmpV++ = groupedSfbMinSnr[j]; + } + + /* generate grouping mask */ + mask = 0; + for (grp = 0; grp < noOfGroups; grp++) { + mask = mask << 1; + for (j=1; j<groupLen[grp]; j++) { + mask = mask << 1; + mask |= 1; + } + } + psyOutCh->groupingMask = mask; + + if (windowSequence != SHORT_WINDOW) { + psyOutCh->sfbEnSumLR = sfbEnergySumLR.sfbLong; + psyOutCh->sfbEnSumMS = sfbEnergySumMS.sfbLong; + } + else { + Word32 i; + Word32 accuSumMS=0; + Word32 accuSumLR=0;
+ Word32 *pSumMS = sfbEnergySumMS.sfbShort;
+ Word32 *pSumLR = sfbEnergySumLR.sfbShort; + + for (i=TRANS_FAC; i; i--) { + accuSumLR = L_add(accuSumLR, *pSumLR); pSumLR++; + accuSumMS = L_add(accuSumMS, *pSumMS); pSumMS++; + } + psyOutCh->sfbEnSumMS = accuSumMS; + psyOutCh->sfbEnSumLR = accuSumLR; + } +} |