Alexandre Lision | 744f742 | 2013-09-25 11:39:37 -0400 | [diff] [blame] | 1 | /* Copyright (c) 2007-2008 CSIRO |
| 2 | Copyright (c) 2007-2009 Xiph.Org Foundation |
| 3 | Written by Jean-Marc Valin */ |
| 4 | /** |
| 5 | @file pitch.h |
| 6 | @brief Pitch analysis |
| 7 | */ |
| 8 | |
| 9 | /* |
| 10 | Redistribution and use in source and binary forms, with or without |
| 11 | modification, are permitted provided that the following conditions |
| 12 | are met: |
| 13 | |
| 14 | - Redistributions of source code must retain the above copyright |
| 15 | notice, this list of conditions and the following disclaimer. |
| 16 | |
| 17 | - Redistributions in binary form must reproduce the above copyright |
| 18 | notice, this list of conditions and the following disclaimer in the |
| 19 | documentation and/or other materials provided with the distribution. |
| 20 | |
| 21 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 22 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 23 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 24 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER |
| 25 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 27 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 28 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 29 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 30 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 31 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #ifndef PITCH_H |
| 35 | #define PITCH_H |
| 36 | |
| 37 | #include "modes.h" |
| 38 | |
| 39 | void pitch_downsample(celt_sig * OPUS_RESTRICT x[], opus_val16 * OPUS_RESTRICT x_lp, |
| 40 | int len, int C); |
| 41 | |
| 42 | void pitch_search(const opus_val16 * OPUS_RESTRICT x_lp, opus_val16 * OPUS_RESTRICT y, |
| 43 | int len, int max_pitch, int *pitch); |
| 44 | |
| 45 | opus_val16 remove_doubling(opus_val16 *x, int maxperiod, int minperiod, |
| 46 | int N, int *T0, int prev_period, opus_val16 prev_gain); |
| 47 | |
| 48 | #endif |