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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2004 Michael Niedermayer |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVRESAMPLE_RESAMPLE_H |
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| 22 | #define AVRESAMPLE_RESAMPLE_H |
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| 23 | |||
| 24 | #include "avresample.h" |
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| 25 | #include "internal.h" |
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| 26 | #include "audio_data.h" |
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| 27 | |||
| 28 | /** |
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| 29 | * Allocate and initialize a ResampleContext. |
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| 30 | * |
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| 31 | * The parameters in the AVAudioResampleContext are used to initialize the |
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| 32 | * ResampleContext. |
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| 33 | * |
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| 34 | * @param avr AVAudioResampleContext |
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| 35 | * @return newly-allocated ResampleContext |
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| 36 | */ |
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| 37 | ResampleContext *ff_audio_resample_init(AVAudioResampleContext *avr); |
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| 38 | |||
| 39 | /** |
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| 40 | * Free a ResampleContext. |
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| 41 | * |
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| 42 | * @param c ResampleContext |
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| 43 | */ |
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| 44 | void ff_audio_resample_free(ResampleContext **c); |
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| 45 | |||
| 46 | /** |
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| 47 | * Resample audio data. |
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| 48 | * |
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| 49 | * Changes the sample rate. |
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| 50 | * |
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| 51 | * @par |
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| 52 | * All samples in the source data may not be consumed depending on the |
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| 53 | * resampling parameters and the size of the output buffer. The unconsumed |
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| 54 | * samples are automatically added to the start of the source in the next call. |
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| 55 | * If the destination data can be reallocated, that may be done in this function |
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| 56 | * in order to fit all available output. If it cannot be reallocated, fewer |
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| 57 | * input samples will be consumed in order to have the output fit in the |
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| 58 | * destination data buffers. |
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| 59 | * |
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| 60 | * @param c ResampleContext |
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| 61 | * @param dst destination audio data |
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| 62 | * @param src source audio data |
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| 63 | * @return 0 on success, negative AVERROR code on failure |
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| 64 | */ |
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| 65 | int ff_audio_resample(ResampleContext *c, AudioData *dst, AudioData *src); |
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| 66 | |||
| 67 | #endif /* AVRESAMPLE_RESAMPLE_H */ |