The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/matrix_map.h

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    1 /*-
    2  * Copyright (c) 2009 Ariff Abdullah <ariff@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: releng/9.2/sys/dev/sound/pcm/matrix_map.h 193640 2009-06-07 19:12:08Z ariff $
   27  */
   28 
   29 #ifndef _SND_MATRIX_MAP_H_
   30 #define _SND_MATRIX_MAP_H_
   31 
   32 /*
   33  * Standard matrix maps:
   34  *
   35  * struct pcmchan_matrix {
   36  *      .id = Matrix identity (see matrix.h). Custom defined should use
   37  *            one of SND_CHN_MATRIX_MISC (for whatever purposes) or
   38  *            SND_CHN_MATRIX_DRV (hardware driver).
   39  *      .channels = Total number of channels, including whatever 'extended'
   40  *                  (the X.ext notions, mostly LFE).
   41  *      .ext = Total number of extended channels (LFE).
   42  *      .map = {
   43  *              Sequences of channel type and interleave structure.
   44  *              [interleave offset] = {
   45  *                      .type = channel type (see matrix.h).
   46  *                      .members = Masks of channels that is acceptable as a
   47  *                                 member of this channel type.
   48  *              },
   49  *              [total channels] = {
   50  *                      .type = Maximum channels marker (SND_CHN_T_MAX).
   51  *                      .members = 0 (no channels allowed here).
   52  *              },
   53  *      },
   54  *      .mask = Mask of channels that exist in this map.
   55  *      .offset = {
   56  *              channel offset that directly translate to the above interleave
   57  *              offset according to SND_CHN_T_* definitions.
   58  *      }
   59  * };
   60  *
   61  * Rule of thumb: Avoid using SND_CHN_T_* that is marked with XXX (matrix.h),
   62  *                or be prepared for the horror to come.
   63  *
   64  */
   65 
   66 #define SND_CHN_MATRIX_MAP_1_0  {                                       \
   67         .id = SND_CHN_MATRIX_1_0,                                       \
   68         .channels = 1,                                                  \
   69         .ext = 0,                                                       \
   70         .map = {                                                        \
   71                 /* Mono, center, etc. */                                \
   72                 [0] = {                                                 \
   73                         .type = SND_CHN_T_FL,                           \
   74                         .members =                                      \
   75                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |     \
   76                             SND_CHN_T_MASK_FC | SND_CHN_T_MASK_LF |     \
   77                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |     \
   78                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SL |     \
   79                             SND_CHN_T_MASK_SR                           \
   80                 },                                                      \
   81                 [1] = {                                                 \
   82                         .type = SND_CHN_T_MAX,                          \
   83                         .members = 0                                    \
   84                 }                                                       \
   85         },                                                              \
   86         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
   87                 SND_CHN_T_MASK_FC,                                      \
   88         .offset = {  0,  0,  0,  0,  0,  0, -1, -1,  0,                 \
   89                      0,  0, -1, -1, -1, -1, -1, -1, -1  }               \
   90 }
   91 
   92 #define SND_CHN_MATRIX_MAP_2_0  {                                       \
   93         .id = SND_CHN_MATRIX_2_0,                                       \
   94         .channels = 2,                                                  \
   95         .ext = 0,                                                       \
   96         .map = {                                                        \
   97                 /* Left */                                              \
   98                 [0] = {                                                 \
   99                         .type = SND_CHN_T_FL,                           \
  100                         .members =                                      \
  101                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FC |     \
  102                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BL |     \
  103                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SL       \
  104                 },                                                      \
  105                 /* Right */                                             \
  106                 [1] = {                                                 \
  107                         .type = SND_CHN_T_FR,                           \
  108                         .members =                                      \
  109                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_FC |     \
  110                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BR |     \
  111                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SR       \
  112                 },                                                      \
  113                 [2] = {                                                 \
  114                         .type = SND_CHN_T_MAX,                          \
  115                         .members = 0                                    \
  116                 }                                                       \
  117         },                                                              \
  118         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR,                  \
  119         .offset = {  0,  1, -1, -1, -1, -1, -1, -1, -1,                 \
  120                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  121 }
  122 
  123 #define SND_CHN_MATRIX_MAP_2_1  {                                       \
  124         .id = SND_CHN_MATRIX_2_1,                                       \
  125         .channels = 3,                                                  \
  126         .ext = 1,                                                       \
  127         .map = {                                                        \
  128                 /* Left */                                              \
  129                 [0] = {                                                 \
  130                         .type = SND_CHN_T_FL,                           \
  131                         .members =                                      \
  132                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FC |     \
  133                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BC |     \
  134                             SND_CHN_T_MASK_SL                           \
  135                 },                                                      \
  136                 /* Right */                                             \
  137                 [1] = {                                                 \
  138                         .type = SND_CHN_T_FR,                           \
  139                         .members =                                      \
  140                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_FC |     \
  141                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_BC |     \
  142                             SND_CHN_T_MASK_SR                           \
  143                 },                                                      \
  144                 /* LFE */                                               \
  145                 [2] = {                                                 \
  146                         .type = SND_CHN_T_LF,                           \
  147                         .members = SND_CHN_T_MASK_LF                    \
  148                 },                                                      \
  149                 [3] = {                                                 \
  150                         .type = SND_CHN_T_MAX,                          \
  151                         .members = 0                                    \
  152                 }                                                       \
  153         },                                                              \
  154         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  155                 SND_CHN_T_MASK_LF,                                      \
  156         .offset = {  0,  1, -1,  2, -1, -1, -1, -1, -1,                 \
  157                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  158 }
  159 
  160 #define SND_CHN_MATRIX_MAP_3_0  {       /* 3 channels default */        \
  161         .id = SND_CHN_MATRIX_3_0,                                       \
  162         .channels = 3,                                                  \
  163         .ext = 0,                                                       \
  164         .map = {                                                        \
  165                 /* Left */                                              \
  166                 [0] = {                                                 \
  167                         .type = SND_CHN_T_FL,                           \
  168                         .members =                                      \
  169                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FC |     \
  170                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_SL       \
  171                 },                                                      \
  172                 /* Right */                                             \
  173                 [1] = {                                                 \
  174                         .type = SND_CHN_T_FR,                           \
  175                         .members =                                      \
  176                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_FC |     \
  177                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_SR       \
  178                 },                                                      \
  179                 /* Rear Center */                                       \
  180                 [2] = {                                                 \
  181                         .type = SND_CHN_T_BC,                           \
  182                         .members =                                      \
  183                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BL |     \
  184                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_BC |     \
  185                             SND_CHN_T_MASK_SL | SND_CHN_T_MASK_SR       \
  186                 },                                                      \
  187                 [3] = {                                                 \
  188                         .type = SND_CHN_T_MAX,                          \
  189                         .members = 0                                    \
  190                 }                                                       \
  191         },                                                              \
  192         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  193                 SND_CHN_T_MASK_BC,                                      \
  194         .offset = {  0,  1, -1, -1, -1, -1, -1, -1,  2,                 \
  195                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  196 }
  197 
  198 #define SND_CHN_MATRIX_MAP_4_0  {                                       \
  199         .id = SND_CHN_MATRIX_4_0,                                       \
  200         .channels = 4,                                                  \
  201         .ext = 0,                                                       \
  202         .map = {                                                        \
  203                 /* Left */                                              \
  204                 [0] = {                                                 \
  205                         .type = SND_CHN_T_FL,                           \
  206                         .members =                                      \
  207                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FC |     \
  208                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_SL       \
  209                 },                                                      \
  210                 /* Right */                                             \
  211                 [1] = {                                                 \
  212                         .type = SND_CHN_T_FR,                           \
  213                         .members =                                      \
  214                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_FC |     \
  215                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_SR       \
  216                 },                                                      \
  217                 /* Rear Left */                                         \
  218                 [2] = {                                                 \
  219                         .type = SND_CHN_T_BL,                           \
  220                         .members =                                      \
  221                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BL |     \
  222                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SL       \
  223                 },                                                      \
  224                 /* Rear Right */                                        \
  225                 [3] = {                                                 \
  226                         .type = SND_CHN_T_BR,                           \
  227                         .members =                                      \
  228                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BR |     \
  229                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SR       \
  230                 },                                                      \
  231                 [4] = {                                                 \
  232                         .type = SND_CHN_T_MAX,                          \
  233                         .members = 0                                    \
  234                 }                                                       \
  235         },                                                              \
  236         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  237                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR,                  \
  238         .offset = {  0,  1, -1, -1,  2,  3, -1, -1, -1,                 \
  239                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  240 }
  241 
  242 #define SND_CHN_MATRIX_MAP_4_1  {                                       \
  243         .id = SND_CHN_MATRIX_4_1,                                       \
  244         .channels = 5,                                                  \
  245         .ext = 1,                                                       \
  246         .map = {                                                        \
  247                 /* Left */                                              \
  248                 [0] = {                                                 \
  249                         .type = SND_CHN_T_FL,                           \
  250                         .members =                                      \
  251                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FC |     \
  252                             SND_CHN_T_MASK_SL                           \
  253                 },                                                      \
  254                 /* Right */                                             \
  255                 [1] = {                                                 \
  256                         .type = SND_CHN_T_FR,                           \
  257                         .members =                                      \
  258                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_FC |     \
  259                             SND_CHN_T_MASK_SR                           \
  260                 },                                                      \
  261                 /* Rear Left */                                         \
  262                 [2] = {                                                 \
  263                         .type = SND_CHN_T_BL,                           \
  264                         .members =                                      \
  265                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BC |     \
  266                             SND_CHN_T_MASK_SL                           \
  267                 },                                                      \
  268                 /* Rear Right */                                        \
  269                 [3] = {                                                 \
  270                         .type = SND_CHN_T_BR,                           \
  271                         .members =                                      \
  272                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_BC |     \
  273                             SND_CHN_T_MASK_SR                           \
  274                 },                                                      \
  275                 /* LFE */                                               \
  276                 [4] = {                                                 \
  277                         .type = SND_CHN_T_LF,                           \
  278                         .members = SND_CHN_T_MASK_LF                    \
  279                 },                                                      \
  280                 [5] = {                                                 \
  281                         .type = SND_CHN_T_MAX,                          \
  282                         .members = 0                                    \
  283                 }                                                       \
  284         },                                                              \
  285         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  286                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |                 \
  287                 SND_CHN_T_MASK_LF,                                      \
  288         .offset = {  0,  1, -1,  4,  2,  3, -1, -1, -1,                 \
  289                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  290 }
  291 
  292 #define SND_CHN_MATRIX_MAP_5_0  {       /* 5 channels default */        \
  293         .id = SND_CHN_MATRIX_5_0,                                       \
  294         .channels = 5,                                                  \
  295         .ext = 0,                                                       \
  296         .map = {                                                        \
  297                 /* Left */                                              \
  298                 [0] = {                                                 \
  299                         .type = SND_CHN_T_FL,                           \
  300                         .members =                                      \
  301                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_LF |     \
  302                             SND_CHN_T_MASK_SL                           \
  303                 },                                                      \
  304                 /* Right */                                             \
  305                 [1] = {                                                 \
  306                         .type = SND_CHN_T_FR,                           \
  307                         .members =                                      \
  308                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_LF |     \
  309                             SND_CHN_T_MASK_SR                           \
  310                 },                                                      \
  311                 /* Rear Left */                                         \
  312                 [2] = {                                                 \
  313                         .type = SND_CHN_T_BL,                           \
  314                         .members =                                      \
  315                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BL |     \
  316                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SL       \
  317                 },                                                      \
  318                 /* Rear Right */                                        \
  319                 [3] = {                                                 \
  320                         .type = SND_CHN_T_BR,                           \
  321                         .members =                                      \
  322                             SND_CHN_T_MASK_LF | SND_CHN_T_MASK_BR |     \
  323                             SND_CHN_T_MASK_BC | SND_CHN_T_MASK_SR       \
  324                 },                                                      \
  325                 /* Center */                                            \
  326                 [4] = {                                                 \
  327                         .type = SND_CHN_T_FC,                           \
  328                         .members = SND_CHN_T_MASK_FC                    \
  329                 },                                                      \
  330                 [5] = {                                                 \
  331                         .type = SND_CHN_T_MAX,                          \
  332                         .members = 0                                    \
  333                 }                                                       \
  334         },                                                              \
  335         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  336                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |                 \
  337                 SND_CHN_T_MASK_FC,                                      \
  338         .offset = {  0,  1,  4, -1,  2,  3, -1, -1, -1,                 \
  339                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  340 }
  341 
  342 #define SND_CHN_MATRIX_MAP_5_1  {       /* 6 channels default */        \
  343         .id = SND_CHN_MATRIX_5_1,                                       \
  344         .channels = 6,                                                  \
  345         .ext = 1,                                                       \
  346         .map = {                                                        \
  347                 /* Left */                                              \
  348                 [0] = {                                                 \
  349                         .type = SND_CHN_T_FL,                           \
  350                         .members =                                      \
  351                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_SL       \
  352                 },                                                      \
  353                 /* Right */                                             \
  354                 [1] = {                                                 \
  355                         .type = SND_CHN_T_FR,                           \
  356                         .members =                                      \
  357                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_SR       \
  358                 },                                                      \
  359                 /* Rear Left */                                         \
  360                 [2] = {                                                 \
  361                         .type = SND_CHN_T_BL,                           \
  362                         .members =                                      \
  363                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BC |     \
  364                             SND_CHN_T_MASK_SL                           \
  365                 },                                                      \
  366                 /* Rear Right */                                        \
  367                 [3] = {                                                 \
  368                         .type = SND_CHN_T_BR,                           \
  369                         .members =                                      \
  370                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_BC |     \
  371                             SND_CHN_T_MASK_SR                           \
  372                 },                                                      \
  373                 /* Center */                                            \
  374                 [4] = {                                                 \
  375                         .type = SND_CHN_T_FC,                           \
  376                         .members = SND_CHN_T_MASK_FC                    \
  377                 },                                                      \
  378                 /* LFE */                                               \
  379                 [5] = {                                                 \
  380                         .type = SND_CHN_T_LF,                           \
  381                         .members = SND_CHN_T_MASK_LF                    \
  382                 },                                                      \
  383                 [6] = {                                                 \
  384                         .type = SND_CHN_T_MAX,                          \
  385                         .members = 0                                    \
  386                 }                                                       \
  387         },                                                              \
  388         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  389                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |                 \
  390                 SND_CHN_T_MASK_FC | SND_CHN_T_MASK_LF,                  \
  391         .offset = {  0,  1,  4,  5,  2,  3, -1, -1, -1,                 \
  392                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  393 }
  394 
  395 #define SND_CHN_MATRIX_MAP_6_0  {                                       \
  396         .id = SND_CHN_MATRIX_6_0,                                       \
  397         .channels = 6,                                                  \
  398         .ext = 0,                                                       \
  399         .map  = {                                                       \
  400                 /* Left */                                              \
  401                 [0] = {                                                 \
  402                         .type = SND_CHN_T_FL,                           \
  403                         .members =                                      \
  404                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_LF |     \
  405                             SND_CHN_T_MASK_SL                           \
  406                 },                                                      \
  407                 /* Right */                                             \
  408                 [1] = {                                                 \
  409                         .type = SND_CHN_T_FR,                           \
  410                         .members =                                      \
  411                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_LF |     \
  412                             SND_CHN_T_MASK_SR                           \
  413                 },                                                      \
  414                 /* Rear Left */                                         \
  415                 [2] = {                                                 \
  416                         .type = SND_CHN_T_BL,                           \
  417                         .members =                                      \
  418                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_LF |     \
  419                             SND_CHN_T_MASK_SL                           \
  420                 },                                                      \
  421                 /* Rear Right */                                        \
  422                 [3] = {                                                 \
  423                         .type = SND_CHN_T_BR,                           \
  424                         .members =                                      \
  425                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_LF |     \
  426                             SND_CHN_T_MASK_SR                           \
  427                 },                                                      \
  428                 /* Center */                                            \
  429                 [4] = {                                                 \
  430                         .type = SND_CHN_T_FC,                           \
  431                         .members = SND_CHN_T_MASK_FC                    \
  432                 },                                                      \
  433                 /* Rear Center */                                       \
  434                 [5] = {                                                 \
  435                         .type = SND_CHN_T_BC,                           \
  436                         .members = SND_CHN_T_MASK_BC                    \
  437                 },                                                      \
  438                 [6] = {                                                 \
  439                         .type = SND_CHN_T_MAX,                          \
  440                         .members = 0                                    \
  441                 }                                                       \
  442         },                                                              \
  443         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  444                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |                 \
  445                 SND_CHN_T_MASK_FC | SND_CHN_T_MASK_BC,                  \
  446         .offset = {  0,  1,  4, -1,  2,  3, -1, -1,  5,                 \
  447                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  448 }
  449 
  450 #define SND_CHN_MATRIX_MAP_6_1  {                                       \
  451         .id = SND_CHN_MATRIX_6_1,                                       \
  452         .channels = 7,                                                  \
  453         .ext = 1,                                                       \
  454         .map = {                                                        \
  455                 /* Left */                                              \
  456                 [0] = {                                                 \
  457                         .type = SND_CHN_T_FL,                           \
  458                         .members =                                      \
  459                             SND_CHN_T_MASK_FL | SND_CHN_T_MASK_SL       \
  460                 },                                                      \
  461                 /* Right */                                             \
  462                 [1] = {                                                 \
  463                         .type = SND_CHN_T_FR,                           \
  464                         .members =                                      \
  465                             SND_CHN_T_MASK_FR | SND_CHN_T_MASK_SR       \
  466                 },                                                      \
  467                 /* Rear Left */                                         \
  468                 [2] = {                                                 \
  469                         .type = SND_CHN_T_BL,                           \
  470                         .members =                                      \
  471                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_SL       \
  472                 },                                                      \
  473                 /* Rear Right */                                        \
  474                 [3] = {                                                 \
  475                         .type = SND_CHN_T_BR,                           \
  476                         .members =                                      \
  477                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_SR       \
  478                 },                                                      \
  479                 /* Center */                                            \
  480                 [4] = {                                                 \
  481                         .type = SND_CHN_T_FC,                           \
  482                         .members = SND_CHN_T_MASK_FC                    \
  483                 },                                                      \
  484                 /* LFE */                                               \
  485                 [5] = {                                                 \
  486                         .type = SND_CHN_T_LF,                           \
  487                         .members = SND_CHN_T_MASK_LF                    \
  488                 },                                                      \
  489                 /* Rear Center */                                       \
  490                 [6] = {                                                 \
  491                         .type = SND_CHN_T_BC,                           \
  492                         .members = SND_CHN_T_MASK_BC                    \
  493                 },                                                      \
  494                 [7] = {                                                 \
  495                         .type = SND_CHN_T_MAX,                          \
  496                         .members = 0                                    \
  497                 }                                                       \
  498         },                                                              \
  499         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  500                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |                 \
  501                 SND_CHN_T_MASK_FC | SND_CHN_T_MASK_LF |                 \
  502                 SND_CHN_T_MASK_BC,                                      \
  503         .offset = {  0,  1,  4,  5,  2,  3, -1, -1,  6,                 \
  504                     -1, -1, -1, -1, -1, -1, -1, -1, -1  }               \
  505 }
  506 
  507 #define SND_CHN_MATRIX_MAP_7_1  {                                       \
  508         .id = SND_CHN_MATRIX_7_1,                                       \
  509         .channels = 8,                                                  \
  510         .ext = 1,                                                       \
  511         .map = {                                                        \
  512                 /* Left */                                              \
  513                 [0] = {                                                 \
  514                         .type = SND_CHN_T_FL,                           \
  515                         .members = SND_CHN_T_MASK_FL                    \
  516                 },                                                      \
  517                 /* Right */                                             \
  518                 [1] = {                                                 \
  519                         .type = SND_CHN_T_FR,                           \
  520                         .members = SND_CHN_T_MASK_FR                    \
  521                 },                                                      \
  522                 /* Rear Left */                                         \
  523                 [2] = {                                                 \
  524                         .type = SND_CHN_T_BL,                           \
  525                         .members =                                      \
  526                             SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BC       \
  527                 },                                                      \
  528                 /* Rear Right */                                        \
  529                 [3] = {                                                 \
  530                         .type = SND_CHN_T_BR,                           \
  531                         .members =                                      \
  532                             SND_CHN_T_MASK_BR | SND_CHN_T_MASK_BC       \
  533                 },                                                      \
  534                 /* Center */                                            \
  535                 [4] = {                                                 \
  536                         .type = SND_CHN_T_FC,                           \
  537                         .members = SND_CHN_T_MASK_FC                    \
  538                 },                                                      \
  539                 /* LFE */                                               \
  540                 [5] = {                                                 \
  541                         .type = SND_CHN_T_LF,                           \
  542                         .members = SND_CHN_T_MASK_LF                    \
  543                 },                                                      \
  544                 /* Side Left */                                         \
  545                 [6] = {                                                 \
  546                         .type = SND_CHN_T_SL,                           \
  547                         .members = SND_CHN_T_MASK_SL                    \
  548                 },                                                      \
  549                 /* Side Right */                                        \
  550                 [7] = {                                                 \
  551                         .type = SND_CHN_T_SR,                           \
  552                         .members = SND_CHN_T_MASK_SR                    \
  553                 },                                                      \
  554                 [8] = {                                                 \
  555                         .type = SND_CHN_T_MAX,                          \
  556                         .members = 0                                    \
  557                 }                                                       \
  558         },                                                              \
  559         .mask = SND_CHN_T_MASK_FL | SND_CHN_T_MASK_FR |                 \
  560                 SND_CHN_T_MASK_BL | SND_CHN_T_MASK_BR |                 \
  561                 SND_CHN_T_MASK_FC | SND_CHN_T_MASK_LF |                 \
  562                 SND_CHN_T_MASK_SL | SND_CHN_T_MASK_SR,                  \
  563         .offset = {  0,  1,  4,  5,  2,  3, -1, -1, -1,                 \
  564                      6,  7, -1, -1, -1, -1, -1, -1, -1  }               \
  565 }
  566 
  567 #endif  /* !_SND_MATRIX_MAP_H_ */

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