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comparison: media/libopus/silk/decode_pitch.c
media/libopus/silk/decode_pitch.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:6a87400273ea |
|---|---|
| 1 /*********************************************************************** | |
| 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved. | |
| 3 Redistribution and use in source and binary forms, with or without | |
| 4 modification, are permitted provided that the following conditions | |
| 5 are met: | |
| 6 - Redistributions of source code must retain the above copyright notice, | |
| 7 this list of conditions and the following disclaimer. | |
| 8 - Redistributions in binary form must reproduce the above copyright | |
| 9 notice, this list of conditions and the following disclaimer in the | |
| 10 documentation and/or other materials provided with the distribution. | |
| 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the | |
| 12 names of specific contributors, may be used to endorse or promote | |
| 13 products derived from this software without specific prior written | |
| 14 permission. | |
| 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
| 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 25 POSSIBILITY OF SUCH DAMAGE. | |
| 26 ***********************************************************************/ | |
| 27 | |
| 28 #ifdef HAVE_CONFIG_H | |
| 29 #include "config.h" | |
| 30 #endif | |
| 31 | |
| 32 /*********************************************************** | |
| 33 * Pitch analyser function | |
| 34 ********************************************************** */ | |
| 35 #include "SigProc_FIX.h" | |
| 36 #include "pitch_est_defines.h" | |
| 37 | |
| 38 void silk_decode_pitch( | |
| 39 opus_int16 lagIndex, /* I */ | |
| 40 opus_int8 contourIndex, /* O */ | |
| 41 opus_int pitch_lags[], /* O 4 pitch values */ | |
| 42 const opus_int Fs_kHz, /* I sampling frequency (kHz) */ | |
| 43 const opus_int nb_subfr /* I number of sub frames */ | |
| 44 ) | |
| 45 { | |
| 46 opus_int lag, k, min_lag, max_lag, cbk_size; | |
| 47 const opus_int8 *Lag_CB_ptr; | |
| 48 | |
| 49 if( Fs_kHz == 8 ) { | |
| 50 if( nb_subfr == PE_MAX_NB_SUBFR ) { | |
| 51 Lag_CB_ptr = &silk_CB_lags_stage2[ 0 ][ 0 ]; | |
| 52 cbk_size = PE_NB_CBKS_STAGE2_EXT; | |
| 53 } else { | |
| 54 silk_assert( nb_subfr == PE_MAX_NB_SUBFR >> 1 ); | |
| 55 Lag_CB_ptr = &silk_CB_lags_stage2_10_ms[ 0 ][ 0 ]; | |
| 56 cbk_size = PE_NB_CBKS_STAGE2_10MS; | |
| 57 } | |
| 58 } else { | |
| 59 if( nb_subfr == PE_MAX_NB_SUBFR ) { | |
| 60 Lag_CB_ptr = &silk_CB_lags_stage3[ 0 ][ 0 ]; | |
| 61 cbk_size = PE_NB_CBKS_STAGE3_MAX; | |
| 62 } else { | |
| 63 silk_assert( nb_subfr == PE_MAX_NB_SUBFR >> 1 ); | |
| 64 Lag_CB_ptr = &silk_CB_lags_stage3_10_ms[ 0 ][ 0 ]; | |
| 65 cbk_size = PE_NB_CBKS_STAGE3_10MS; | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 min_lag = silk_SMULBB( PE_MIN_LAG_MS, Fs_kHz ); | |
| 70 max_lag = silk_SMULBB( PE_MAX_LAG_MS, Fs_kHz ); | |
| 71 lag = min_lag + lagIndex; | |
| 72 | |
| 73 for( k = 0; k < nb_subfr; k++ ) { | |
| 74 pitch_lags[ k ] = lag + matrix_ptr( Lag_CB_ptr, k, contourIndex, cbk_size ); | |
| 75 pitch_lags[ k ] = silk_LIMIT( pitch_lags[ k ], min_lag, max_lag ); | |
| 76 } | |
| 77 } |
