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-rw-r--r--media/libopus/silk/decode_pitch.c77
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diff --git a/media/libopus/silk/decode_pitch.c b/media/libopus/silk/decode_pitch.c
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+/***********************************************************************
+Copyright (c) 2006-2011, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+/***********************************************************
+* Pitch analyser function
+********************************************************** */
+#include "SigProc_FIX.h"
+#include "pitch_est_defines.h"
+
+void silk_decode_pitch(
+ opus_int16 lagIndex, /* I */
+ opus_int8 contourIndex, /* O */
+ opus_int pitch_lags[], /* O 4 pitch values */
+ const opus_int Fs_kHz, /* I sampling frequency (kHz) */
+ const opus_int nb_subfr /* I number of sub frames */
+)
+{
+ opus_int lag, k, min_lag, max_lag, cbk_size;
+ const opus_int8 *Lag_CB_ptr;
+
+ if( Fs_kHz == 8 ) {
+ if( nb_subfr == PE_MAX_NB_SUBFR ) {
+ Lag_CB_ptr = &silk_CB_lags_stage2[ 0 ][ 0 ];
+ cbk_size = PE_NB_CBKS_STAGE2_EXT;
+ } else {
+ silk_assert( nb_subfr == PE_MAX_NB_SUBFR >> 1 );
+ Lag_CB_ptr = &silk_CB_lags_stage2_10_ms[ 0 ][ 0 ];
+ cbk_size = PE_NB_CBKS_STAGE2_10MS;
+ }
+ } else {
+ if( nb_subfr == PE_MAX_NB_SUBFR ) {
+ Lag_CB_ptr = &silk_CB_lags_stage3[ 0 ][ 0 ];
+ cbk_size = PE_NB_CBKS_STAGE3_MAX;
+ } else {
+ silk_assert( nb_subfr == PE_MAX_NB_SUBFR >> 1 );
+ Lag_CB_ptr = &silk_CB_lags_stage3_10_ms[ 0 ][ 0 ];
+ cbk_size = PE_NB_CBKS_STAGE3_10MS;
+ }
+ }
+
+ min_lag = silk_SMULBB( PE_MIN_LAG_MS, Fs_kHz );
+ max_lag = silk_SMULBB( PE_MAX_LAG_MS, Fs_kHz );
+ lag = min_lag + lagIndex;
+
+ for( k = 0; k < nb_subfr; k++ ) {
+ pitch_lags[ k ] = lag + matrix_ptr( Lag_CB_ptr, k, contourIndex, cbk_size );
+ pitch_lags[ k ] = silk_LIMIT( pitch_lags[ k ], min_lag, max_lag );
+ }
+}