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-rw-r--r--media/libstagefright/codecs/amrwbenc/inc/wb_vad_c.h218
1 files changed, 109 insertions, 109 deletions
diff --git a/media/libstagefright/codecs/amrwbenc/inc/wb_vad_c.h b/media/libstagefright/codecs/amrwbenc/inc/wb_vad_c.h
index 39ef506..04fd318 100644
--- a/media/libstagefright/codecs/amrwbenc/inc/wb_vad_c.h
+++ b/media/libstagefright/codecs/amrwbenc/inc/wb_vad_c.h
@@ -1,109 +1,109 @@
-/*
- ** 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.
- */
-
-
-/*-------------------------------------------------------------------*
- * WB_VAD_C.H *
- *-------------------------------------------------------------------*
- * Constants for Voice Activity Detection. *
- *-------------------------------------------------------------------*/
-
-#ifndef __WB_VAD_C_H__
-#define __WB_VAD_C_H__
-
-#define FRAME_LEN 256 /* Length (samples) of the input frame */
-#define COMPLEN 12 /* Number of sub-bands used by VAD */
-
-#define UNIRSHFT 7 /* = log2(MAX_16/UNITY), UNITY = 256 */
-#define SCALE 128 /* (UNITY*UNITY)/512 */
-
-#define TONE_THR (Word16)(0.65*MAX_16) /* Threshold for tone detection */
-
-/* constants for speech level estimation */
-#define SP_EST_COUNT 80
-#define SP_ACTIVITY_COUNT 25
-#define ALPHA_SP_UP (Word16)((1.0 - 0.85)*MAX_16)
-#define ALPHA_SP_DOWN (Word16)((1.0 - 0.85)*MAX_16)
-
-#define NOM_LEVEL 2050 /* about -26 dBov Q15 */
-#define SPEECH_LEVEL_INIT NOM_LEVEL /* initial speech level */
-#define MIN_SPEECH_LEVEL1 (Word16)(NOM_LEVEL * 0.063) /* NOM_LEVEL -24 dB */
-#define MIN_SPEECH_LEVEL2 (Word16)(NOM_LEVEL * 0.2) /* NOM_LEVEL -14 dB */
-#define MIN_SPEECH_SNR 4096 /* 0 dB, lowest SNR estimation, Q12 */
-
-/* Time constants for background spectrum update */
-#define ALPHA_UP1 (Word16)((1.0 - 0.95)*MAX_16) /* Normal update, upwards: */
-#define ALPHA_DOWN1 (Word16)((1.0 - 0.936)*MAX_16) /* Normal update, downwards */
-#define ALPHA_UP2 (Word16)((1.0 - 0.985)*MAX_16) /* Forced update, upwards */
-#define ALPHA_DOWN2 (Word16)((1.0 - 0.943)*MAX_16) /* Forced update, downwards */
-#define ALPHA3 (Word16)((1.0 - 0.95)*MAX_16) /* Update downwards */
-#define ALPHA4 (Word16)((1.0 - 0.9)*MAX_16) /* For stationary estimation */
-#define ALPHA5 (Word16)((1.0 - 0.5)*MAX_16) /* For stationary estimation */
-
-/* Constants for VAD threshold */
-#define THR_MIN (Word16)(1.6*SCALE) /* Minimum threshold */
-#define THR_HIGH (Word16)(6*SCALE) /* Highest threshold */
-#define THR_LOW (Word16)(1.7*SCALE) /* Lowest threshold */
-#define NO_P1 31744 /* ilog2(1), Noise level for highest threshold */
-#define NO_P2 19786 /* ilog2(0.1*MAX_16), Noise level for lowest threshold */
-#define NO_SLOPE (Word16)(MAX_16*(float)(THR_LOW-THR_HIGH)/(float)(NO_P2-NO_P1))
-
-#define SP_CH_MIN (Word16)(-0.75*SCALE)
-#define SP_CH_MAX (Word16)(0.75*SCALE)
-#define SP_P1 22527 /* ilog2(NOM_LEVEL/4) */
-#define SP_P2 17832 /* ilog2(NOM_LEVEL*4) */
-#define SP_SLOPE (Word16)(MAX_16*(float)(SP_CH_MAX-SP_CH_MIN)/(float)(SP_P2-SP_P1))
-
-/* Constants for hangover length */
-#define HANG_HIGH 12 /* longest hangover */
-#define HANG_LOW 2 /* shortest hangover */
-#define HANG_P1 THR_LOW /* threshold for longest hangover */
-#define HANG_P2 (Word16)(4*SCALE) /* threshold for shortest hangover */
-#define HANG_SLOPE (Word16)(MAX_16*(float)(HANG_LOW-HANG_HIGH)/(float)(HANG_P2-HANG_P1))
-
-/* Constants for burst length */
-#define BURST_HIGH 8 /* longest burst length */
-#define BURST_LOW 3 /* shortest burst length */
-#define BURST_P1 THR_HIGH /* threshold for longest burst */
-#define BURST_P2 THR_LOW /* threshold for shortest burst */
-#define BURST_SLOPE (Word16)(MAX_16*(float)(BURST_LOW-BURST_HIGH)/(float)(BURST_P2-BURST_P1))
-
-/* Parameters for background spectrum recovery function */
-#define STAT_COUNT 20 /* threshold of stationary detection counter */
-
-#define STAT_THR_LEVEL 184 /* Threshold level for stationarity detection */
-#define STAT_THR 1000 /* Threshold for stationarity detection */
-
-/* Limits for background noise estimate */
-#define NOISE_MIN 40 /* minimum */
-#define NOISE_MAX 20000 /* maximum */
-#define NOISE_INIT 150 /* initial */
-
-/* Thresholds for signal power (now calculated on 2 frames) */
-#define VAD_POW_LOW (Word32)30000L /* If input power is lower than this, VAD is set to 0 */
-#define POW_TONE_THR (Word32)686080L /* If input power is lower,tone detection flag is ignored */
-
-/* Constants for the filter bank */
-#define COEFF3 13363 /* coefficient for the 3rd order filter */
-#define COEFF5_1 21955 /* 1st coefficient the for 5th order filter */
-#define COEFF5_2 6390 /* 2nd coefficient the for 5th order filter */
-#define F_5TH_CNT 5 /* number of 5th order filters */
-#define F_3TH_CNT 6 /* number of 3th order filters */
-
-#endif //__WB_VAD_C_H__
-
-
-
+/*
+ ** 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.
+ */
+
+
+/*-------------------------------------------------------------------*
+ * WB_VAD_C.H *
+ *-------------------------------------------------------------------*
+ * Constants for Voice Activity Detection. *
+ *-------------------------------------------------------------------*/
+
+#ifndef __WB_VAD_C_H__
+#define __WB_VAD_C_H__
+
+#define FRAME_LEN 256 /* Length (samples) of the input frame */
+#define COMPLEN 12 /* Number of sub-bands used by VAD */
+
+#define UNIRSHFT 7 /* = log2(MAX_16/UNITY), UNITY = 256 */
+#define SCALE 128 /* (UNITY*UNITY)/512 */
+
+#define TONE_THR (Word16)(0.65*MAX_16) /* Threshold for tone detection */
+
+/* constants for speech level estimation */
+#define SP_EST_COUNT 80
+#define SP_ACTIVITY_COUNT 25
+#define ALPHA_SP_UP (Word16)((1.0 - 0.85)*MAX_16)
+#define ALPHA_SP_DOWN (Word16)((1.0 - 0.85)*MAX_16)
+
+#define NOM_LEVEL 2050 /* about -26 dBov Q15 */
+#define SPEECH_LEVEL_INIT NOM_LEVEL /* initial speech level */
+#define MIN_SPEECH_LEVEL1 (Word16)(NOM_LEVEL * 0.063) /* NOM_LEVEL -24 dB */
+#define MIN_SPEECH_LEVEL2 (Word16)(NOM_LEVEL * 0.2) /* NOM_LEVEL -14 dB */
+#define MIN_SPEECH_SNR 4096 /* 0 dB, lowest SNR estimation, Q12 */
+
+/* Time constants for background spectrum update */
+#define ALPHA_UP1 (Word16)((1.0 - 0.95)*MAX_16) /* Normal update, upwards: */
+#define ALPHA_DOWN1 (Word16)((1.0 - 0.936)*MAX_16) /* Normal update, downwards */
+#define ALPHA_UP2 (Word16)((1.0 - 0.985)*MAX_16) /* Forced update, upwards */
+#define ALPHA_DOWN2 (Word16)((1.0 - 0.943)*MAX_16) /* Forced update, downwards */
+#define ALPHA3 (Word16)((1.0 - 0.95)*MAX_16) /* Update downwards */
+#define ALPHA4 (Word16)((1.0 - 0.9)*MAX_16) /* For stationary estimation */
+#define ALPHA5 (Word16)((1.0 - 0.5)*MAX_16) /* For stationary estimation */
+
+/* Constants for VAD threshold */
+#define THR_MIN (Word16)(1.6*SCALE) /* Minimum threshold */
+#define THR_HIGH (Word16)(6*SCALE) /* Highest threshold */
+#define THR_LOW (Word16)(1.7*SCALE) /* Lowest threshold */
+#define NO_P1 31744 /* ilog2(1), Noise level for highest threshold */
+#define NO_P2 19786 /* ilog2(0.1*MAX_16), Noise level for lowest threshold */
+#define NO_SLOPE (Word16)(MAX_16*(float)(THR_LOW-THR_HIGH)/(float)(NO_P2-NO_P1))
+
+#define SP_CH_MIN (Word16)(-0.75*SCALE)
+#define SP_CH_MAX (Word16)(0.75*SCALE)
+#define SP_P1 22527 /* ilog2(NOM_LEVEL/4) */
+#define SP_P2 17832 /* ilog2(NOM_LEVEL*4) */
+#define SP_SLOPE (Word16)(MAX_16*(float)(SP_CH_MAX-SP_CH_MIN)/(float)(SP_P2-SP_P1))
+
+/* Constants for hangover length */
+#define HANG_HIGH 12 /* longest hangover */
+#define HANG_LOW 2 /* shortest hangover */
+#define HANG_P1 THR_LOW /* threshold for longest hangover */
+#define HANG_P2 (Word16)(4*SCALE) /* threshold for shortest hangover */
+#define HANG_SLOPE (Word16)(MAX_16*(float)(HANG_LOW-HANG_HIGH)/(float)(HANG_P2-HANG_P1))
+
+/* Constants for burst length */
+#define BURST_HIGH 8 /* longest burst length */
+#define BURST_LOW 3 /* shortest burst length */
+#define BURST_P1 THR_HIGH /* threshold for longest burst */
+#define BURST_P2 THR_LOW /* threshold for shortest burst */
+#define BURST_SLOPE (Word16)(MAX_16*(float)(BURST_LOW-BURST_HIGH)/(float)(BURST_P2-BURST_P1))
+
+/* Parameters for background spectrum recovery function */
+#define STAT_COUNT 20 /* threshold of stationary detection counter */
+
+#define STAT_THR_LEVEL 184 /* Threshold level for stationarity detection */
+#define STAT_THR 1000 /* Threshold for stationarity detection */
+
+/* Limits for background noise estimate */
+#define NOISE_MIN 40 /* minimum */
+#define NOISE_MAX 20000 /* maximum */
+#define NOISE_INIT 150 /* initial */
+
+/* Thresholds for signal power (now calculated on 2 frames) */
+#define VAD_POW_LOW (Word32)30000L /* If input power is lower than this, VAD is set to 0 */
+#define POW_TONE_THR (Word32)686080L /* If input power is lower,tone detection flag is ignored */
+
+/* Constants for the filter bank */
+#define COEFF3 13363 /* coefficient for the 3rd order filter */
+#define COEFF5_1 21955 /* 1st coefficient the for 5th order filter */
+#define COEFF5_2 6390 /* 2nd coefficient the for 5th order filter */
+#define F_5TH_CNT 5 /* number of 5th order filters */
+#define F_3TH_CNT 6 /* number of 3th order filters */
+
+#endif //__WB_VAD_C_H__
+
+
+
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