repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (c) Stefano Sabatini | stefasab at gmail.com | |
| 3 | * Copyright (c) S.N. Hemanth Meenakshisundaram | smeenaks at ucsd.edu | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 7 | * FFmpeg is free software; you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU Lesser General Public | |
| 9 | * License as published by the Free Software Foundation; either | |
| 10 | * version 2.1 of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * FFmpeg is distributed in the hope that it will be useful, | |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * Lesser General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU Lesser General Public | |
| 18 | * License along with FFmpeg; if not, write to the Free Software | |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | */ | |
| 21 | ||
| 22 | #ifndef AVFILTER_AUDIO_H | |
| 23 | #define AVFILTER_AUDIO_H | |
| 24 | ||
| 25 | #include "avfilter.h" | |
| 26 | #include "internal.h" | |
| 27 | ||
| 28 | static const enum AVSampleFormat ff_packed_sample_fmts_array[] = { | |
| 29 | AV_SAMPLE_FMT_U8, | |
| 30 | AV_SAMPLE_FMT_S16, | |
| 31 | AV_SAMPLE_FMT_S32, | |
| 32 | AV_SAMPLE_FMT_FLT, | |
| 33 | AV_SAMPLE_FMT_DBL, | |
| 34 | AV_SAMPLE_FMT_NONE | |
| 35 | }; | |
| 36 | ||
| 37 | static const enum AVSampleFormat ff_planar_sample_fmts_array[] = { | |
| 38 | AV_SAMPLE_FMT_U8P, | |
| 39 | AV_SAMPLE_FMT_S16P, | |
| 40 | AV_SAMPLE_FMT_S32P, | |
| 41 | AV_SAMPLE_FMT_FLTP, | |
| 42 | AV_SAMPLE_FMT_DBLP, | |
| 43 | AV_SAMPLE_FMT_NONE | |
| 44 | }; | |
| 45 | ||
| 46 | /** default handler for get_audio_buffer() for audio inputs */ | |
| 47 | AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples); | |
| 48 | ||
| 49 | /** get_audio_buffer() handler for filters which simply pass audio along */ | |
| 50 | AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples); | |
| 51 | ||
| 52 | /** | |
| 53 | * Request an audio samples buffer with a specific set of permissions. | |
| 54 | * | |
| 55 | * @param link the output link to the filter from which the buffer will | |
| 56 | * be requested | |
| 57 | * @param nb_samples the number of samples per channel | |
| 58 | * @return A reference to the samples. This must be unreferenced with | |
| 59 | * avfilter_unref_buffer when you are finished with it. | |
| 60 | */ | |
| 61 | AVFrame *ff_get_audio_buffer(AVFilterLink *link, int nb_samples); | |
| 62 | ||
| 63 | /** | |
| 64 | * Send a buffer of audio samples to the next filter. | |
| 65 | * | |
| 66 | * @param link the output link over which the audio samples are being sent | |
| 67 | * @param samplesref a reference to the buffer of audio samples being sent. The | |
| 68 | * receiving filter will free this reference when it no longer | |
| 69 | * needs it or pass it on to the next filter. | |
| 70 | * | |
| 71 | * @return >= 0 on success, a negative AVERROR on error. The receiving filter | |
| 72 | * is responsible for unreferencing samplesref in case of error. | |
| 73 | */ | |
| 74 | int ff_filter_samples(AVFilterLink *link, AVFilterBufferRef *samplesref); | |
| 75 | ||
| 76 | /** | |
| 77 | * Send a buffer of audio samples to the next link, without checking | |
| 78 | * min_samples. | |
| 79 | */ | |
| 80 | int ff_filter_samples_framed(AVFilterLink *link, | |
| 81 | AVFilterBufferRef *samplesref); | |
| 82 | ||
| 83 | #endif /* AVFILTER_AUDIO_H */ |