| /* |
| * Copyright (c) 2004 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * This file is part of Libav. |
| * |
| * Libav is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * Libav is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with Libav; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVRESAMPLE_RESAMPLE_H |
| #define AVRESAMPLE_RESAMPLE_H |
| |
| #include "avresample.h" |
| #include "audio_data.h" |
| |
| typedef struct ResampleContext ResampleContext; |
| |
| /** |
| * Allocate and initialize a ResampleContext. |
| * |
| * The parameters in the AVAudioResampleContext are used to initialize the |
| * ResampleContext. |
| * |
| * @param avr AVAudioResampleContext |
| * @return newly-allocated ResampleContext |
| */ |
| ResampleContext *ff_audio_resample_init(AVAudioResampleContext *avr); |
| |
| /** |
| * Free a ResampleContext. |
| * |
| * @param c ResampleContext |
| */ |
| void ff_audio_resample_free(ResampleContext **c); |
| |
| /** |
| * Resample audio data. |
| * |
| * Changes the sample rate. |
| * |
| * @par |
| * All samples in the source data may not be consumed depending on the |
| * resampling parameters and the size of the output buffer. The unconsumed |
| * samples are automatically added to the start of the source in the next call. |
| * If the destination data can be reallocated, that may be done in this function |
| * in order to fit all available output. If it cannot be reallocated, fewer |
| * input samples will be consumed in order to have the output fit in the |
| * destination data buffers. |
| * |
| * @param c ResampleContext |
| * @param dst destination audio data |
| * @param src source audio data |
| * @param consumed number of samples consumed from the source |
| * @return number of samples written to the destination |
| */ |
| int ff_audio_resample(ResampleContext *c, AudioData *dst, AudioData *src, |
| int *consumed); |
| |
| #endif /* AVRESAMPLE_RESAMPLE_H */ |