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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 | /** | |
27 | * @file | |
28 | * Audio format conversion routines | |
29 | * This interface is deprecated and will be dropped in a future | |
30 | * version. You should use the libswresample library instead. | |
31 | */ | |
32 | ||
33 | #if FF_API_AUDIO_CONVERT | |
34 | ||
35 | #include "libavutil/cpu.h" | |
36 | #include "avcodec.h" | |
37 | #include "libavutil/channel_layout.h" | |
38 | ||
39 | struct AVAudioConvert; | |
40 | typedef struct AVAudioConvert AVAudioConvert; | |
41 | ||
42 | /** | |
43 | * Create an audio sample format converter context | |
44 | * @param out_fmt Output sample format | |
45 | * @param out_channels Number of output channels | |
46 | * @param in_fmt Input sample format | |
47 | * @param in_channels Number of input channels | |
48 | * @param[in] matrix Channel mixing matrix (of dimension in_channel*out_channels). Set to NULL to ignore. | |
49 | * @param flags See AV_CPU_FLAG_xx | |
50 | * @return NULL on error | |
51 | * @deprecated See libswresample | |
52 | */ | |
53 | ||
54 | attribute_deprecated | |
55 | AVAudioConvert *av_audio_convert_alloc(enum AVSampleFormat out_fmt, int out_channels, | |
56 | enum AVSampleFormat in_fmt, int in_channels, | |
57 | const float *matrix, int flags); | |
58 | ||
59 | /** | |
60 | * Free audio sample format converter context | |
61 | * @deprecated See libswresample | |
62 | */ | |
63 | ||
64 | attribute_deprecated | |
65 | void av_audio_convert_free(AVAudioConvert *ctx); | |
66 | ||
67 | /** | |
68 | * Convert between audio sample formats | |
69 | * @param[in] out array of output buffers for each channel. set to NULL to ignore processing of the given channel. | |
70 | * @param[in] out_stride distance between consecutive output samples (measured in bytes) | |
71 | * @param[in] in array of input buffers for each channel | |
72 | * @param[in] in_stride distance between consecutive input samples (measured in bytes) | |
73 | * @param len length of audio frame size (measured in samples) | |
74 | * @deprecated See libswresample | |
75 | */ | |
76 | ||
77 | attribute_deprecated | |
78 | int av_audio_convert(AVAudioConvert *ctx, | |
79 | void * const out[6], const int out_stride[6], | |
80 | const void * const in[6], const int in_stride[6], int len); | |
81 | ||
82 | #endif /* FF_API_AUDIO_CONVERT */ | |
83 | ||
84 | #endif /* AVCODEC_AUDIOCONVERT_H */ |