blob: 996c3f37adc08c4119e58e1c3a2d34224cd1c5bb
| 1 | /* |
| 2 | * audio conversion |
| 3 | * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> |
| 4 | * Copyright (c) 2008 Peter Ross |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #ifndef AVCODEC_AUDIOCONVERT_H |
| 24 | #define AVCODEC_AUDIOCONVERT_H |
| 25 | |
| 26 | #include "version.h" |
| 27 | |
| 28 | /** |
| 29 | * @file |
| 30 | * Audio format conversion routines |
| 31 | * This interface is deprecated and will be dropped in a future |
| 32 | * version. You should use the libswresample library instead. |
| 33 | */ |
| 34 | |
| 35 | #if FF_API_AUDIO_CONVERT |
| 36 | |
| 37 | #include "libavutil/cpu.h" |
| 38 | #include "avcodec.h" |
| 39 | #include "libavutil/channel_layout.h" |
| 40 | |
| 41 | struct AVAudioConvert; |
| 42 | typedef struct AVAudioConvert AVAudioConvert; |
| 43 | |
| 44 | /** |
| 45 | * Create an audio sample format converter context |
| 46 | * @param out_fmt Output sample format |
| 47 | * @param out_channels Number of output channels |
| 48 | * @param in_fmt Input sample format |
| 49 | * @param in_channels Number of input channels |
| 50 | * @param[in] matrix Channel mixing matrix (of dimension in_channel*out_channels). Set to NULL to ignore. |
| 51 | * @param flags See AV_CPU_FLAG_xx |
| 52 | * @return NULL on error |
| 53 | * @deprecated See libswresample |
| 54 | */ |
| 55 | |
| 56 | attribute_deprecated |
| 57 | AVAudioConvert *av_audio_convert_alloc(enum AVSampleFormat out_fmt, int out_channels, |
| 58 | enum AVSampleFormat in_fmt, int in_channels, |
| 59 | const float *matrix, int flags); |
| 60 | |
| 61 | /** |
| 62 | * Free audio sample format converter context |
| 63 | * @deprecated See libswresample |
| 64 | */ |
| 65 | |
| 66 | attribute_deprecated |
| 67 | void av_audio_convert_free(AVAudioConvert *ctx); |
| 68 | |
| 69 | /** |
| 70 | * Convert between audio sample formats |
| 71 | * @param[in] out array of output buffers for each channel. set to NULL to ignore processing of the given channel. |
| 72 | * @param[in] out_stride distance between consecutive output samples (measured in bytes) |
| 73 | * @param[in] in array of input buffers for each channel |
| 74 | * @param[in] in_stride distance between consecutive input samples (measured in bytes) |
| 75 | * @param len length of audio frame size (measured in samples) |
| 76 | * @deprecated See libswresample |
| 77 | */ |
| 78 | |
| 79 | attribute_deprecated |
| 80 | int av_audio_convert(AVAudioConvert *ctx, |
| 81 | void * const out[6], const int out_stride[6], |
| 82 | const void * const in[6], const int in_stride[6], int len); |
| 83 | |
| 84 | #endif /* FF_API_AUDIO_CONVERT */ |
| 85 | |
| 86 | #endif /* AVCODEC_AUDIOCONVERT_H */ |
| 87 |