78 lines
3.6 KiB
C
78 lines
3.6 KiB
C
|
/***********************************************************************
|
||
|
|
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 {
|
||
|
|
celt_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 {
|
||
|
|
celt_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 );
|
||
|
|
}
|
||
|
|
}
|