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-rw-r--r--media/libstagefright/codecs/aacenc/src/psy_configuration.c134
1 files changed, 67 insertions, 67 deletions
diff --git a/media/libstagefright/codecs/aacenc/src/psy_configuration.c b/media/libstagefright/codecs/aacenc/src/psy_configuration.c
index 586e00f..8e599b0 100644
--- a/media/libstagefright/codecs/aacenc/src/psy_configuration.c
+++ b/media/libstagefright/codecs/aacenc/src/psy_configuration.c
@@ -1,26 +1,26 @@
-/*
- ** 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: psy_configuration.c
-
- Content: Psychoaccoustic configuration functions
-
+/*
+ ** 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: psy_configuration.c
+
+ Content: Psychoaccoustic configuration functions
+
*******************************************************************************/
-#include "basic_op.h"
+#include "basic_op.h"
#include "oper_32b.h"
#include "psy_configuration.h"
#include "adj_thr.h"
@@ -29,10 +29,10 @@
#define BARC_SCALE 100 /* integer barc values are scaled with 100 */
-#define LOG2_1000 301 /* log2*1000 */
-#define PI2_1000 1571 /* pi/2*1000*/
-#define ATAN_COEF1 3560 /* 1000/0.280872f*/
-#define ATAN_COEF2 281 /* 1000*0.280872f*/
+#define LOG2_1000 301 /* log2*1000 */
+#define PI2_1000 1571 /* pi/2*1000*/
+#define ATAN_COEF1 3560 /* 1000/0.280872f*/
+#define ATAN_COEF2 281 /* 1000*0.280872f*/
typedef struct{
@@ -57,30 +57,30 @@ static const Word16 maskLowSprEnLong = 30; /* in 1dB/bark */
static const Word16 maskHighSprEnLong = 20; /* in 1dB/bark */
static const Word16 maskHighSprEnLongLowBr = 15; /* in 1dB/bark */
static const Word16 maskLowSprEnShort = 20; /* in 1dB/bark */
-static const Word16 maskHighSprEnShort = 15; /* in 1dB/bark */
-static const Word16 c_minRemainingThresholdFactor = 0x0148; /* 0.01 *(1 << 15)*/
-static const Word32 c_maxsnr = 0x66666666; /* upper limit is -1 dB */
-static const Word32 c_minsnr = 0x00624dd3; /* lower limit is -25 dB */
-
-static const Word32 c_maxClipEnergyLong = 0x77359400; /* 2.0e9f*/
-static const Word32 c_maxClipEnergyShort = 0x01dcd650; /* 2.0e9f/(AACENC_TRANS_FAC*AACENC_TRANS_FAC)*/
-
-
-Word32 GetSRIndex(Word32 sampleRate)
-{
- if (92017 <= sampleRate) return 0;
- if (75132 <= sampleRate) return 1;
- if (55426 <= sampleRate) return 2;
- if (46009 <= sampleRate) return 3;
- if (37566 <= sampleRate) return 4;
- if (27713 <= sampleRate) return 5;
- if (23004 <= sampleRate) return 6;
- if (18783 <= sampleRate) return 7;
- if (13856 <= sampleRate) return 8;
- if (11502 <= sampleRate) return 9;
- if (9391 <= sampleRate) return 10;
-
- return 11;
+static const Word16 maskHighSprEnShort = 15; /* in 1dB/bark */
+static const Word16 c_minRemainingThresholdFactor = 0x0148; /* 0.01 *(1 << 15)*/
+static const Word32 c_maxsnr = 0x66666666; /* upper limit is -1 dB */
+static const Word32 c_minsnr = 0x00624dd3; /* lower limit is -25 dB */
+
+static const Word32 c_maxClipEnergyLong = 0x77359400; /* 2.0e9f*/
+static const Word32 c_maxClipEnergyShort = 0x01dcd650; /* 2.0e9f/(AACENC_TRANS_FAC*AACENC_TRANS_FAC)*/
+
+
+Word32 GetSRIndex(Word32 sampleRate)
+{
+ if (92017 <= sampleRate) return 0;
+ if (75132 <= sampleRate) return 1;
+ if (55426 <= sampleRate) return 2;
+ if (46009 <= sampleRate) return 3;
+ if (37566 <= sampleRate) return 4;
+ if (27713 <= sampleRate) return 5;
+ if (23004 <= sampleRate) return 6;
+ if (18783 <= sampleRate) return 7;
+ if (13856 <= sampleRate) return 8;
+ if (11502 <= sampleRate) return 9;
+ if (9391 <= sampleRate) return 10;
+
+ return 11;
}
@@ -89,8 +89,8 @@ Word32 GetSRIndex(Word32 sampleRate)
* function name: atan_1000
* description: calculates 1000*atan(x/1000)
* based on atan approx for x > 0
-* atan(x) = x/((float)1.0f+(float)0.280872f*x*x) if x < 1
-* = pi/2 - x/((float)0.280872f +x*x) if x >= 1
+* atan(x) = x/((float)1.0f+(float)0.280872f*x*x) if x < 1
+* = pi/2 - x/((float)0.280872f +x*x) if x >= 1
* return: 1000*atan(x/1000)
*
**********************************************************************************/
@@ -272,7 +272,7 @@ static void initBarcValues(Word16 numPb,
*
* function name: initMinSnr
* description: calculate min snr parameter
-* minSnr(n) = 1/(2^sfbPemin(n)/w(n) - 1.5)
+* minSnr(n) = 1/(2^sfbPemin(n)/w(n) - 1.5)
*
*****************************************************************************/
static void initMinSnr(const Word32 bitrate,
@@ -303,7 +303,7 @@ static void initMinSnr(const Word32 bitrate,
barcWidth = pbVal1 - pbVal0;
pbVal0 = pbVal1;
- /* allow at least 2.4% of pe for each active barc */
+ /* allow at least 2.4% of pe for each active barc */
pePart = ((pePerWindow * 24) * (max_bark * barcWidth)) /
(pbBarcVal[sfbActive-1] * (sfbOffset[sfb+1] - sfbOffset[sfb]));
@@ -311,15 +311,15 @@ static void initMinSnr(const Word32 bitrate,
pePart = min(pePart, 8400);
pePart = max(pePart, 1400);
- /* minSnr(n) = 1/(2^sfbPemin(n)/w(n) - 1.5)*/
+ /* minSnr(n) = 1/(2^sfbPemin(n)/w(n) - 1.5)*/
/* we add an offset of 2^16 to the pow functions */
- /* 0xc000 = 1.5*(1 << 15)*/
+ /* 0xc000 = 1.5*(1 << 15)*/
snr = pow2_xy((pePart - 16*1000),1000) - 0x0000c000;
- if(snr > 0x00008000)
- {
- shift = norm_l(snr);
+ if(snr > 0x00008000)
+ {
+ shift = norm_l(snr);
snr = Div_32(0x00008000 << shift, snr << shift);
}
else
@@ -347,16 +347,16 @@ Word16 InitPsyConfigurationLong(Word32 bitrate,
Word16 bandwidth,
PSY_CONFIGURATION_LONG *psyConf)
{
- Word32 samplerateindex;
- Word16 sfbBarcVal[MAX_SFB_LONG];
+ Word32 samplerateindex;
+ Word16 sfbBarcVal[MAX_SFB_LONG];
Word16 sfb;
/*
init sfb table
- */
- samplerateindex = GetSRIndex(samplerate);
- psyConf->sfbCnt = sfBandTotalLong[samplerateindex];
- psyConf->sfbOffset = sfBandTabLong + sfBandTabLongOffset[samplerateindex];
+ */
+ samplerateindex = GetSRIndex(samplerate);
+ psyConf->sfbCnt = sfBandTotalLong[samplerateindex];
+ psyConf->sfbOffset = sfBandTabLong + sfBandTabLongOffset[samplerateindex];
psyConf->sampRateIdx = samplerateindex;
/*
@@ -429,7 +429,7 @@ Word16 InitPsyConfigurationLong(Word32 bitrate,
Word16 InitPsyConfigurationShort(Word32 bitrate,
Word32 samplerate,
Word16 bandwidth,
- PSY_CONFIGURATION_SHORT *psyConf)
+ PSY_CONFIGURATION_SHORT *psyConf)
{
Word32 samplerateindex;
Word16 sfbBarcVal[MAX_SFB_SHORT];
@@ -437,8 +437,8 @@ Word16 InitPsyConfigurationShort(Word32 bitrate,
/*
init sfb table
*/
- samplerateindex = GetSRIndex(samplerate);
- psyConf->sfbCnt = sfBandTotalShort[samplerateindex];
+ samplerateindex = GetSRIndex(samplerate);
+ psyConf->sfbCnt = sfBandTotalShort[samplerateindex];
psyConf->sfbOffset = sfBandTabShort + sfBandTabShortOffset[samplerateindex];
psyConf->sampRateIdx = samplerateindex;
/*
generated by cgit v1.1 at 2024-05-17 02:41:54 +0000