Alexandre Lision | 744f742 | 2013-09-25 11:39:37 -0400 | [diff] [blame] | 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. |
Alexandre Lision | 8538238 | 2014-01-27 15:54:16 -0500 | [diff] [blame] | 11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the |
Alexandre Lision | 744f742 | 2013-09-25 11:39:37 -0400 | [diff] [blame] | 12 | names of specific contributors, may be used to endorse or promote |
| 13 | products derived from this software without specific prior written |
| 14 | permission. |
Alexandre Lision | 8538238 | 2014-01-27 15:54:16 -0500 | [diff] [blame] | 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
Alexandre Lision | 744f742 | 2013-09-25 11:39:37 -0400 | [diff] [blame] | 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 | } |