libaf/reorder_ch.h

   1 /*
   2  * common functions for reordering audio channels
   3  *
   4  * Copyright (C) 2007 Ulion <ulion A gmail P com>
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer 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
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with MPlayer; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #ifndef REORDER_CH_H
  24 #define REORDER_CH_H
  25
  26 // L   - Left
  27 // R   - Right
  28 // C   - Center
  29 // Ls  - Left Surround
  30 // Rs  - Right Surround
  31 // Cs  - Center Surround
  32 // Rls - Rear Left Surround
  33 // Rrs - Rear Right Surround
  34
  35 #define AF_LFE   (1<<7)
  36
  37 #define AF_CHANNEL_LAYOUT_MONO   ((100<<8)|1)
  38 #define AF_CHANNEL_LAYOUT_STEREO ((101<<8)|2)
  39 #define AF_CHANNEL_LAYOUT_1_0 AF_CHANNEL_LAYOUT_MONO   // C
  40 #define AF_CHANNEL_LAYOUT_2_0 AF_CHANNEL_LAYOUT_STEREO // L R
  41 #define AF_CHANNEL_LAYOUT_2_1   ((102<<8)|3)           // L R LFE
  42 #define AF_CHANNEL_LAYOUT_3_0_A ((103<<8)|3)           // L R C
  43 #define AF_CHANNEL_LAYOUT_3_0_B ((104<<8)|3)           // C L R
  44 #define AF_CHANNEL_LAYOUT_4_0_A ((105<<8)|4)           // L R C Cs
  45 #define AF_CHANNEL_LAYOUT_4_0_B ((106<<8)|4)           // C L R Cs
  46 #define AF_CHANNEL_LAYOUT_4_0_C ((107<<8)|4)           // L R Ls Rs
  47 #define AF_CHANNEL_LAYOUT_5_0_A ((108<<8)|5)           // L R C Ls Rs
  48 #define AF_CHANNEL_LAYOUT_5_0_B ((109<<8)|5)           // L R Ls Rs C
  49 #define AF_CHANNEL_LAYOUT_5_0_C ((110<<8)|5)           // L C R Ls Rs
  50 #define AF_CHANNEL_LAYOUT_5_0_D ((111<<8)|5)           // C L R Ls Rs
  51 #define AF_CHANNEL_LAYOUT_5_1_A ((112<<8)|6|AF_LFE)    // L R C LFE Ls Rs
  52 #define AF_CHANNEL_LAYOUT_5_1_B ((113<<8)|6|AF_LFE)    // L R Ls Rs C LFE
  53 #define AF_CHANNEL_LAYOUT_5_1_C ((114<<8)|6|AF_LFE)    // L C R Ls Rs LFE
  54 #define AF_CHANNEL_LAYOUT_5_1_D ((115<<8)|6|AF_LFE)    // C L R Ls Rs LFE
  55 #define AF_CHANNEL_LAYOUT_5_1_E ((116<<8)|6|AF_LFE)    // LFE L C R Ls Rs
  56 #define AF_CHANNEL_LAYOUT_6_1_A ((117<<8)|7|AF_LFE)    // L R C LFE Ls Rs Cs
  57 #define AF_CHANNEL_LAYOUT_7_1_A ((118<<8)|8|AF_LFE)   // L R C LFE Ls Rs Rls Rrs
  58
  59
  60 #define AF_CHANNEL_LAYOUT_ALSA_5CH_DEFAULT AF_CHANNEL_LAYOUT_5_0_B
  61 #define AF_CHANNEL_LAYOUT_ALSA_6CH_DEFAULT AF_CHANNEL_LAYOUT_5_1_B
  62 #define AF_CHANNEL_LAYOUT_MPLAYER_5CH_DEFAULT AF_CHANNEL_LAYOUT_ALSA_5CH_DEFAULT
  63 #define AF_CHANNEL_LAYOUT_MPLAYER_6CH_DEFAULT AF_CHANNEL_LAYOUT_ALSA_6CH_DEFAULT
  64 #define AF_CHANNEL_LAYOUT_AAC_5CH_DEFAULT AF_CHANNEL_LAYOUT_5_0_D
  65 #define AF_CHANNEL_LAYOUT_AAC_6CH_DEFAULT AF_CHANNEL_LAYOUT_5_1_D
  66 #define AF_CHANNEL_LAYOUT_WAVEEX_5CH_DEFAULT AF_CHANNEL_LAYOUT_5_0_A
  67 #define AF_CHANNEL_LAYOUT_WAVEEX_6CH_DEFAULT AF_CHANNEL_LAYOUT_5_1_A
  68 #define AF_CHANNEL_LAYOUT_LAVC_AC3_5CH_DEFAULT AF_CHANNEL_LAYOUT_5_0_C
  69 #define AF_CHANNEL_LAYOUT_LAVC_AC3_6CH_DEFAULT AF_CHANNEL_LAYOUT_5_1_C
  70 #define AF_CHANNEL_LAYOUT_LAVC_LIBA52_5CH_DEFAULT AF_CHANNEL_LAYOUT_5_0_C
  71 #define AF_CHANNEL_LAYOUT_LAVC_LIBA52_6CH_DEFAULT AF_CHANNEL_LAYOUT_5_1_E
  72 #define AF_CHANNEL_LAYOUT_LAVC_DCA_5CH_DEFAULT AF_CHANNEL_LAYOUT_5_0_D
  73 #define AF_CHANNEL_LAYOUT_LAVC_DCA_6CH_DEFAULT AF_CHANNEL_LAYOUT_5_1_D
  74
  75 #define AF_CHANNEL_MASK  0xFF
  76 #define AF_GET_CH_NUM(A) ((A)&0x7F)
  77 #define AF_GET_CH_NUM_WITH_LFE(A) ((A)&0xFF)
  78 #define AF_IS_SAME_CH_NUM(A,B) (((A)&0xFF)==((B)&0xFF))
  79 #define AF_IS_LAYOUT_SPECIFIED(A) ((A)&0xFFFFF800)
  80 #define AF_IS_LAYOUT_UNSPECIFIED(A) (!AF_IS_LAYOUT_SPECIFIED(A))
  81
  82 /// Optimized channel reorder between channel layouts with same channel number.
  83 void reorder_channel_copy(void *src,
  84                           int src_layout,
  85                           void *dest,
  86                           int dest_layout,
  87                           int samples,
  88                           int samplesize);
  89
  90 /// Same with reorder_channel_copy, but works on single buffer.
  91 void reorder_channel(void *buf,
  92                      int src_layout,
  93                      int dest_layout,
  94                      int samples,
  95                      int samplesize);
  96
  97 // Channel layout definitions for different audio sources or targets
  98 // When specified channel number, they will be map to the specific layouts.
  99 #define AF_CHANNEL_LAYOUT_ALSA_DEFAULT        0
 100 #define AF_CHANNEL_LAYOUT_AAC_DEFAULT         1
 101 #define AF_CHANNEL_LAYOUT_WAVEEX_DEFAULT      2
 102 #define AF_CHANNEL_LAYOUT_LAVC_AC3_DEFAULT    3
 103 #define AF_CHANNEL_LAYOUT_LAVC_LIBA52_DEFAULT 4
 104 #define AF_CHANNEL_LAYOUT_LAVC_DCA_DEFAULT    5
 105 #define AF_CHANNEL_LAYOUT_SOURCE_NUM          6
 106 #define AF_CHANNEL_LAYOUT_MPLAYER_DEFAULT AF_CHANNEL_LAYOUT_ALSA_DEFAULT
 107
 108 /// Optimized channel reorder between different audio sources and targets.
 109 void reorder_channel_copy_nch(void *src,
 110                               int src_layout,
 111                               void *dest,
 112                               int dest_layout,
 113                               int chnum,
 114                               int samples,
 115                               int samplesize);
 116
 117 /// Same with reorder_channel_copy_nch, but works on single buffer.
 118 void reorder_channel_nch(void *buf,
 119                          int src_layout,
 120                          int dest_layout,
 121                          int chnum,
 122                          int samples,
 123                          int samplesize);
 124
 125 #endif /* REORDER_CH_H */