FFmpeg: libavutil/audioconvert.h Source File

00001 /*
00002  * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
00003  * Copyright (c) 2008 Peter Ross
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVUTIL_AUDIOCONVERT_H
00023 #define AVUTIL_AUDIOCONVERT_H
00024 
00025 #include <stdint.h>
00026 
00041 #define AV_CH_FRONT_LEFT             0x00000001
00042 #define AV_CH_FRONT_RIGHT            0x00000002
00043 #define AV_CH_FRONT_CENTER           0x00000004
00044 #define AV_CH_LOW_FREQUENCY          0x00000008
00045 #define AV_CH_BACK_LEFT              0x00000010
00046 #define AV_CH_BACK_RIGHT             0x00000020
00047 #define AV_CH_FRONT_LEFT_OF_CENTER   0x00000040
00048 #define AV_CH_FRONT_RIGHT_OF_CENTER  0x00000080
00049 #define AV_CH_BACK_CENTER            0x00000100
00050 #define AV_CH_SIDE_LEFT              0x00000200
00051 #define AV_CH_SIDE_RIGHT             0x00000400
00052 #define AV_CH_TOP_CENTER             0x00000800
00053 #define AV_CH_TOP_FRONT_LEFT         0x00001000
00054 #define AV_CH_TOP_FRONT_CENTER       0x00002000
00055 #define AV_CH_TOP_FRONT_RIGHT        0x00004000
00056 #define AV_CH_TOP_BACK_LEFT          0x00008000
00057 #define AV_CH_TOP_BACK_CENTER        0x00010000
00058 #define AV_CH_TOP_BACK_RIGHT         0x00020000
00059 #define AV_CH_STEREO_LEFT            0x20000000  
00060 #define AV_CH_STEREO_RIGHT           0x40000000  
00061 #define AV_CH_WIDE_LEFT              0x0000000080000000ULL
00062 #define AV_CH_WIDE_RIGHT             0x0000000100000000ULL
00063 #define AV_CH_SURROUND_DIRECT_LEFT   0x0000000200000000ULL
00064 #define AV_CH_SURROUND_DIRECT_RIGHT  0x0000000400000000ULL
00065 
00069 #define AV_CH_LAYOUT_NATIVE          0x8000000000000000ULL
00070 
00076 #define AV_CH_LAYOUT_MONO              (AV_CH_FRONT_CENTER)
00077 #define AV_CH_LAYOUT_STEREO            (AV_CH_FRONT_LEFT|AV_CH_FRONT_RIGHT)
00078 #define AV_CH_LAYOUT_2POINT1           (AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY)
00079 #define AV_CH_LAYOUT_2_1               (AV_CH_LAYOUT_STEREO|AV_CH_BACK_CENTER)
00080 #define AV_CH_LAYOUT_SURROUND          (AV_CH_LAYOUT_STEREO|AV_CH_FRONT_CENTER)
00081 #define AV_CH_LAYOUT_3POINT1           (AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY)
00082 #define AV_CH_LAYOUT_4POINT0           (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_CENTER)
00083 #define AV_CH_LAYOUT_4POINT1           (AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY)
00084 #define AV_CH_LAYOUT_2_2               (AV_CH_LAYOUT_STEREO|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
00085 #define AV_CH_LAYOUT_QUAD              (AV_CH_LAYOUT_STEREO|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
00086 #define AV_CH_LAYOUT_5POINT0           (AV_CH_LAYOUT_SURROUND|AV_CH_SIDE_LEFT|AV_CH_SIDE_RIGHT)
00087 #define AV_CH_LAYOUT_5POINT1           (AV_CH_LAYOUT_5POINT0|AV_CH_LOW_FREQUENCY)
00088 #define AV_CH_LAYOUT_5POINT0_BACK      (AV_CH_LAYOUT_SURROUND|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
00089 #define AV_CH_LAYOUT_5POINT1_BACK      (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_LOW_FREQUENCY)
00090 #define AV_CH_LAYOUT_6POINT0           (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_CENTER)
00091 #define AV_CH_LAYOUT_6POINT0_FRONT     (AV_CH_LAYOUT_2_2|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
00092 #define AV_CH_LAYOUT_HEXAGONAL         (AV_CH_LAYOUT_5POINT0_BACK|AV_CH_BACK_CENTER)
00093 #define AV_CH_LAYOUT_6POINT1           (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_CENTER)
00094 #define AV_CH_LAYOUT_6POINT1_BACK      (AV_CH_LAYOUT_5POINT1_BACK|AV_CH_BACK_CENTER)
00095 #define AV_CH_LAYOUT_6POINT1_FRONT     (AV_CH_LAYOUT_6POINT0_FRONT|AV_CH_LOW_FREQUENCY)
00096 #define AV_CH_LAYOUT_7POINT0           (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
00097 #define AV_CH_LAYOUT_7POINT0_FRONT     (AV_CH_LAYOUT_5POINT0|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
00098 #define AV_CH_LAYOUT_7POINT1           (AV_CH_LAYOUT_5POINT1|AV_CH_BACK_LEFT|AV_CH_BACK_RIGHT)
00099 #define AV_CH_LAYOUT_7POINT1_WIDE      (AV_CH_LAYOUT_5POINT1|AV_CH_FRONT_LEFT_OF_CENTER|AV_CH_FRONT_RIGHT_OF_CENTER)
00100 #define AV_CH_LAYOUT_OCTAGONAL         (AV_CH_LAYOUT_5POINT0|AV_CH_BACK_LEFT|AV_CH_BACK_CENTER|AV_CH_BACK_RIGHT)
00101 #define AV_CH_LAYOUT_STEREO_DOWNMIX    (AV_CH_STEREO_LEFT|AV_CH_STEREO_RIGHT)
00102 
00122 uint64_t av_get_channel_layout(const char *name);
00123 
00131 void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout);
00132 
00136 int av_get_channel_layout_nb_channels(uint64_t channel_layout);
00137 
00141 int64_t av_get_default_channel_layout(int nb_channels);
00142 
00147 #endif /* AVUTIL_AUDIOCONVERT_H */