1 files changed, 108 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/aacenc/inc/tns.h b/media/libstagefright/codecs/aacenc/inc/tns.h
new file mode 100644
index 0000000..9ffcce9
--- /dev/null
+++ b/media/libstagefright/codecs/aacenc/inc/tns.h
@@ -0,0 +1,108 @@
+/*
+ ** 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:		tns.h
+
+	Content:	TNS structures
+
+*******************************************************************************/
+
+#ifndef _TNS_H
+#define _TNS_H
+
+#include "typedef.h"
+#include "psy_const.h"
+
+
+
+#define TNS_MAX_ORDER 12
+#define TNS_MAX_ORDER_SHORT 5
+
+#define FILTER_DIRECTION    0
+
+typedef struct{ /*stuff that is tabulated dependent on bitrate etc. */
+  Word16     threshOn;                /* min. prediction gain for using tns TABUL * 100*/
+  Word32     lpcStartFreq;            /* lowest freq for lpc TABUL*/
+  Word32     lpcStopFreq;             /* TABUL */
+  Word32     tnsTimeResolution;
+}TNS_CONFIG_TABULATED;
+
+
+typedef struct {   /*assigned at InitTime*/
+  Word16 tnsActive;
+  Word16 tnsMaxSfb;
+
+  Word16 maxOrder;                /* max. order of tns filter */
+  Word16 tnsStartFreq;            /* lowest freq. for tns filtering */
+  Word16 coefRes;
+
+  TNS_CONFIG_TABULATED confTab;
+
+  Word32 acfWindow[TNS_MAX_ORDER+1];
+
+  Word16 tnsStartBand;
+  Word16 tnsStartLine;
+
+  Word16 tnsStopBand;
+  Word16 tnsStopLine;
+
+  Word16 lpcStartBand;
+  Word16 lpcStartLine;
+
+  Word16 lpcStopBand;
+  Word16 lpcStopLine;
+
+  Word16 tnsRatioPatchLowestCb;
+  Word16 tnsModifyBeginCb;
+
+  Word16 threshold; /* min. prediction gain for using tns TABUL * 100 */
+
+}TNS_CONFIG;
+
+
+typedef struct {
+  Word16 tnsActive;
+  Word32 parcor[TNS_MAX_ORDER];
+  Word16 predictionGain;
+} TNS_SUBBLOCK_INFO; /* Word16 size: 26 */
+
+typedef struct{
+  TNS_SUBBLOCK_INFO subBlockInfo[TRANS_FAC];
+} TNS_DATA_SHORT;
+
+typedef struct{
+  TNS_SUBBLOCK_INFO subBlockInfo;
+} TNS_DATA_LONG;
+
+typedef struct{
+  TNS_DATA_LONG tnsLong;
+  TNS_DATA_SHORT tnsShort;
+}TNS_DATA_RAW;
+
+typedef struct{
+  Word16 numOfSubblocks;
+  TNS_DATA_RAW dataRaw;
+}TNS_DATA; /* Word16 size: 1 + 8*26 + 26 = 235 */
+
+typedef struct{
+  Word16 tnsActive[TRANS_FAC];
+  Word16 coefRes[TRANS_FAC];
+  Word16 length[TRANS_FAC];
+  Word16 order[TRANS_FAC];
+  Word16 coef[TRANS_FAC*TNS_MAX_ORDER_SHORT];
+}TNS_INFO; /* Word16 size: 72 */
+
+#endif /* _TNS_H */