Alc/panning.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2010 by authors.
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include <ctype.h>
  27 #include <assert.h>
  28
  29 #include "alMain.h"
  30 #include "AL/al.h"
  31 #include "AL/alc.h"
  32 #include "alu.h"
  33 #include "bool.h"
  34
  35
  36 void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat elevation, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
  37 {
  38     ALfloat dir[3] = {
  39         sinf(angle) * cosf(elevation),
  40         sinf(elevation),
  41         -cosf(angle) * cosf(elevation)
  42     };
  43     ComputeDirectionalGains(device, dir, ingain, gains);
  44 }
  45
  46 void ComputeDirectionalGains(const ALCdevice *device, const ALfloat dir[3], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
  47 {
  48     ALfloat coeffs[MAX_AMBI_COEFFS];
  49     ALuint i, j;
  50     /* Convert from OpenAL coords to Ambisonics. */
  51     ALfloat x = -dir[2];
  52     ALfloat y = -dir[0];
  53     ALfloat z =  dir[1];
  54
  55     coeffs[0] = 0.7071f; /* sqrt(1.0 / 2.0) */
  56     coeffs[1] = x; /* X */
  57     coeffs[2] = y; /* Y */
  58     coeffs[3] = z; /* Z */
  59     coeffs[4] = 0.5f * (3.0f*z*z - 1.0f); /* 0.5 * (3*Z*Z - 1) */
  60     coeffs[5] = 2.0f * z * x; /* 2*Z*X */
  61     coeffs[6] = 2.0f * y * z; /* 2*Y*Z */
  62     coeffs[7] = x*x - y*y; /* X*X - Y*Y */
  63     coeffs[8] = 2.0f * x * y; /* 2*X*Y */
  64     coeffs[9] = 0.5f * z * (5.0f*z*z - 3.0f); /* 0.5 * Z * (5*Z*Z - 3) */
  65     coeffs[10] = 0.7262f * x * (5.0f*z*z - 1.0f); /* sqrt(135.0 / 256.0) * X * (5*Z*Z - 1) */
  66     coeffs[11] = 0.7262f * y * (5.0f*z*z - 1.0f); /* sqrt(135.0 / 256.0) * Y * (5*Z*Z - 1) */
  67     coeffs[12] = 2.5981f * z * (x*x - y*y); /* sqrt(27.0 / 4.0) * Z * (X*X - Y*Y) */
  68     coeffs[13] = 5.1962f * x * y * z; /* sqrt(27) * X * Y * Z */
  69     coeffs[14] = x * (x*x - 3.0f*y*y); /* X * (X*X - 3*Y*Y) */
  70     coeffs[15] = y * (3.0f*x*x - y*y); /* Y * (3*X*X - Y*Y) */
  71
  72     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
  73         gains[i] = 0.0f;
  74     for(i = 0;i < device->NumChannels;i++)
  75     {
  76         for(j = 0;j < MAX_AMBI_COEFFS;j++)
  77             gains[i] += device->Channel[i].HOACoeff[j]*coeffs[j];
  78         gains[i] = maxf(gains[i], 0.0f) * ingain;
  79     }
  80 }
  81
  82 void ComputeAmbientGains(const ALCdevice *device, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
  83 {
  84     ALuint i;
  85
  86     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
  87         gains[i] = 0.0f;
  88     for(i = 0;i < device->NumChannels;i++)
  89         gains[i] = device->Channel[i].HOACoeff[0] * ingain;
  90 }
  91
  92 void ComputeBFormatGains(const ALCdevice *device, const ALfloat mtx[4], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
  93 {
  94     ALuint i, j;
  95
  96     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
  97         gains[i] = 0.0f;
  98     for(i = 0;i < device->NumChannels;i++)
  99     {
 100         for(j = 0;j < 4;j++)
 101             gains[i] += device->Channel[i].FOACoeff[j] * mtx[j];
 102         gains[i] *= ingain;
 103     }
 104 }
 105
 106
 107 typedef struct ChannelMap {
 108     enum Channel ChanName;
 109     ChannelConfig Config;
 110 } ChannelMap;
 111
 112 static void SetChannelMap(ALCdevice *device, const ChannelMap *chanmap, size_t count)
 113 {
 114     size_t i, j;
 115
 116     for(i = 0;i < MAX_OUTPUT_CHANNELS && device->ChannelName[i] != InvalidChannel;i++)
 117     {
 118         if(device->ChannelName[i] == LFE)
 119         {
 120             device->Channel[i].Angle = 0.0f;
 121             device->Channel[i].Elevation = 0.0f;
 122             for(j = 0;j < MAX_AMBI_COEFFS;j++)
 123                 device->Channel[i].HOACoeff[j] = 0.0f;
 124             for(j = 0;j < 4;j++)
 125                 device->Channel[i].FOACoeff[j] = 0.0f;
 126             continue;
 127         }
 128
 129         for(j = 0;j < count;j++)
 130         {
 131             if(device->ChannelName[i] == chanmap[j].ChanName)
 132             {
 133                 device->Channel[i] = chanmap[j].Config;
 134                 break;
 135             }
 136         }
 137         if(j == count)
 138             ERR("Failed to match channel "SZFMT" (label %d) in config\n", i, device->ChannelName[i]);
 139     }
 140     device->NumChannels = i;
 141 }
 142
 143 static bool LoadChannelSetup(ALCdevice *device)
 144 {
 145     static const char *mono_names[1] = {
 146         "front-center"
 147     }, *stereo_names[2] = {
 148         "front-left", "front-right"
 149     }, *quad_names[4] = {
 150         "front-left", "front-right",
 151         "back-left", "back-right"
 152     }, *surround51_names[5] = {
 153         "front-left", "front-right",
 154         "front-center",
 155         "side-left", "side-right"
 156     }, *surround51rear_names[5] = {
 157         "front-left", "front-right",
 158         "front-center",
 159         "back-left", "back-right"
 160     }, *surround61_names[6] = {
 161         "front-left", "front-right",
 162         "front-center", "back-center",
 163         "side-left", "side-right"
 164     }, *surround71_names[7] = {
 165         "front-left", "front-right",
 166         "front-center",
 167         "back-left", "back-right",
 168         "side-left", "side-right"
 169     };
 170     ChannelMap chanmap[MAX_OUTPUT_CHANNELS];
 171     const char **channames = NULL;
 172     const char *layout = NULL;
 173     size_t count = 0;
 174     size_t i;
 175
 176     switch(device->FmtChans)
 177     {
 178         case DevFmtMono:
 179             layout = "mono";
 180             channames = mono_names;
 181             count = COUNTOF(mono_names);
 182             break;
 183         case DevFmtStereo:
 184             layout = "stereo";
 185             channames = stereo_names;
 186             count = COUNTOF(stereo_names);
 187             break;
 188         case DevFmtQuad:
 189             layout = "quad";
 190             channames = quad_names;
 191             count = COUNTOF(quad_names);
 192             break;
 193         case DevFmtX51:
 194             layout = "surround51";
 195             channames = surround51_names;
 196             count = COUNTOF(surround51_names);
 197             break;
 198         case DevFmtX51Rear:
 199             layout = "surround51rear";
 200             channames = surround51rear_names;
 201             count = COUNTOF(surround51rear_names);
 202             break;
 203         case DevFmtX61:
 204             layout = "surround61";
 205             channames = surround61_names;
 206             count = COUNTOF(surround61_names);
 207             break;
 208         case DevFmtX71:
 209             layout = "surround71";
 210             channames = surround71_names;
 211             count = COUNTOF(surround71_names);
 212             break;
 213     }
 214
 215     if(!layout)
 216         return false;
 217     else
 218     {
 219         char name[32];
 220         snprintf(name, sizeof(name), "%s/enable", layout);
 221         if(!GetConfigValueBool("layouts", name, 0))
 222             return false;
 223     }
 224
 225     for(i = 0;i < count;i++)
 226     {
 227         const char *channame = channames[i];
 228         char chanlayout[32];
 229         const char *value;
 230         int props;
 231
 232         snprintf(chanlayout, sizeof(chanlayout), "%s/%s", layout, channame);
 233         if(!ConfigValueStr("layouts", chanlayout, &value))
 234         {
 235             ERR("Missing channel %s\n", channame);
 236             return false;
 237         }
 238         props = sscanf(value, " %f %f ; %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f %f ; %f %f %f %f",
 239             &chanmap[i].Config.Angle, &chanmap[i].Config.Elevation,
 240             &chanmap[i].Config.HOACoeff[0], &chanmap[i].Config.HOACoeff[1], &chanmap[i].Config.HOACoeff[2],
 241             &chanmap[i].Config.HOACoeff[3], &chanmap[i].Config.HOACoeff[4], &chanmap[i].Config.HOACoeff[5],
 242             &chanmap[i].Config.HOACoeff[6], &chanmap[i].Config.HOACoeff[7], &chanmap[i].Config.HOACoeff[8],
 243             &chanmap[i].Config.HOACoeff[9], &chanmap[i].Config.HOACoeff[10], &chanmap[i].Config.HOACoeff[11],
 244             &chanmap[i].Config.HOACoeff[12], &chanmap[i].Config.HOACoeff[13], &chanmap[i].Config.HOACoeff[14],
 245             &chanmap[i].Config.HOACoeff[15], &chanmap[i].Config.FOACoeff[0], &chanmap[i].Config.FOACoeff[1],
 246             &chanmap[i].Config.FOACoeff[2], &chanmap[i].Config.FOACoeff[3]);
 247         if(props == 0)
 248         {
 249             ERR("Failed to parse channel "SZFMT" properties\n", i);
 250             return false;
 251         }
 252
 253         if(strcmp(channame, "front-left") == 0)
 254             chanmap[i].ChanName = FrontLeft;
 255         else if(strcmp(channame, "front-right") == 0)
 256             chanmap[i].ChanName = FrontRight;
 257         else if(strcmp(channame, "front-center") == 0)
 258             chanmap[i].ChanName = FrontCenter;
 259         else if(strcmp(channame, "back-left") == 0)
 260             chanmap[i].ChanName = BackLeft;
 261         else if(strcmp(channame, "back-right") == 0)
 262             chanmap[i].ChanName = BackRight;
 263         else if(strcmp(channame, "back-center") == 0)
 264             chanmap[i].ChanName = BackCenter;
 265         else if(strcmp(channame, "side-left") == 0)
 266             chanmap[i].ChanName = SideLeft;
 267         else if(strcmp(channame, "side-right") == 0)
 268             chanmap[i].ChanName = SideRight;
 269
 270         if(props < 22)
 271         {
 272             ERR("Failed to parse channel %s elements (expected 22, got %d\n", channame, props);
 273             return false;
 274         }
 275         else
 276         {
 277             if(!(chanmap[i].Config.Angle >= -180.0f && chanmap[i].Config.Angle <= 180.0f))
 278             {
 279                 ERR("Channel %s angle is out of range (%f not within -180...+180 degrees)\n", channame, chanmap[i].Config.Angle);
 280                 return false;
 281             }
 282             chanmap[i].Config.Angle = DEG2RAD(chanmap[i].Config.Angle);
 283
 284             if(!(chanmap[i].Config.Elevation >= -180.0f && chanmap[i].Config.Elevation <= 180.0f))
 285             {
 286                 ERR("Channel %s elevation is out of range (%f not within -180...+180 degrees)\n", channame, chanmap[i].Config.Angle);
 287                 return false;
 288             }
 289             chanmap[i].Config.Elevation = DEG2RAD(chanmap[i].Config.Elevation);
 290         }
 291     }
 292     SetChannelMap(device, chanmap, count);
 293     return true;
 294 }
 295
 296 ALvoid aluInitPanning(ALCdevice *device)
 297 {
 298     static const ChannelMap MonoCfg[1] = {
 299         { FrontCenter, { DEG2RAD(   0.0f), DEG2RAD(0.0f), { 1.4142f }, { 1.4142f } } },
 300     }, StereoCfg[2] = {
 301         { FrontLeft,   { DEG2RAD( -90.0f), DEG2RAD(0.0f), { 0.7071f, 0.0f,  0.5f, 0.0f }, { 0.7071f, 0.0f,  0.5f, 0.0f } } },
 302         { FrontRight,  { DEG2RAD(  90.0f), DEG2RAD(0.0f), { 0.7071f, 0.0f, -0.5f, 0.0f }, { 0.7071f, 0.0f, -0.5f, 0.0f } } },
 303     }, QuadCfg[4] = {
 304         { FrontLeft,   { DEG2RAD( -45.0f), DEG2RAD(0.0f), { 0.353558f,  0.306181f,  0.306192f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f,  0.117183f }, { 0.353553f,  0.250000f,  0.250000f, 0.0f  } } },
 305         { FrontRight,  { DEG2RAD(  45.0f), DEG2RAD(0.0f), { 0.353543f,  0.306181f, -0.306192f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f, -0.117193f }, { 0.353553f,  0.250000f, -0.250000f, 0.0f  } } },
 306         { BackLeft,    { DEG2RAD(-135.0f), DEG2RAD(0.0f), { 0.353543f, -0.306192f,  0.306181f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f, -0.117193f }, { 0.353553f, -0.250000f,  0.250000f, 0.0f  } } },
 307         { BackRight,   { DEG2RAD( 135.0f), DEG2RAD(0.0f), { 0.353558f, -0.306192f, -0.306181f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f,  0.117183f }, { 0.353553f, -0.250000f, -0.250000f, 0.0f  } } },
 308     }, X51SideCfg[5] = {
 309         { FrontLeft,   { DEG2RAD( -30.0f), DEG2RAD(0.0f), { 0.208954f,  0.212846f,  0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f,  0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f,  0.047490f }, { 0.208954f,  0.162905f,  0.182425f, 0.0f } } },
 310         { FrontRight,  { DEG2RAD(  30.0f), DEG2RAD(0.0f), { 0.208954f,  0.212846f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, -0.047490f }, { 0.208954f,  0.162905f, -0.182425f, 0.0f } } },
 311         { FrontCenter, { DEG2RAD(   0.0f), DEG2RAD(0.0f), { 0.109403f,  0.179490f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f,  0.142031f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.072024f, -0.000001f }, { 0.109403f,  0.137375f,  0.000000f, 0.0f } } },
 312         { SideLeft,    { DEG2RAD(-110.0f), DEG2RAD(0.0f), { 0.470936f, -0.369626f,  0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, -0.043968f }, { 0.470934f, -0.282903f,  0.267406f, 0.0f } } },
 313         { SideRight,   { DEG2RAD( 110.0f), DEG2RAD(0.0f), { 0.470936f, -0.369626f, -0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f,  0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f,  0.043968f }, { 0.470934f, -0.282903f, -0.267406f, 0.0f } } },
 314     }, X51RearCfg[5] = {
 315         { FrontLeft,   { DEG2RAD( -30.0f), DEG2RAD(0.0f), { 0.208954f,  0.212846f,  0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f,  0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f,  0.047490f }, { 0.208954f,  0.162905f,  0.182425f, 0.0f } } },
 316         { FrontRight,  { DEG2RAD(  30.0f), DEG2RAD(0.0f), { 0.208954f,  0.212846f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017738f, -0.204014f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051023f, -0.047490f }, { 0.208954f,  0.162905f, -0.182425f, 0.0f } } },
 317         { FrontCenter, { DEG2RAD(   0.0f), DEG2RAD(0.0f), { 0.109403f,  0.179490f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f,  0.142031f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.072024f, -0.000001f }, { 0.109403f,  0.137375f,  0.000000f, 0.0f } } },
 318         { BackLeft,    { DEG2RAD(-110.0f), DEG2RAD(0.0f), { 0.470936f, -0.369626f,  0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f, -0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f, -0.043968f }, { 0.470934f, -0.282903f,  0.267406f, 0.0f } } },
 319         { BackRight,   { DEG2RAD( 110.0f), DEG2RAD(0.0f), { 0.470936f, -0.369626f, -0.349386f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031375f,  0.058144f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007119f,  0.043968f }, { 0.470934f, -0.282903f, -0.267406f, 0.0f } } },
 320     }, X61Cfg[6] = {
 321         { FrontLeft,   { DEG2RAD( -30.0f), DEG2RAD(0.0f), { 0.167065f,  0.200583f,  0.172695f, 0.0f, 0.0f, 0.0f, 0.0f,  0.029855f,  0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f,  0.068910f }, { 0.167065f,  0.153519f,  0.132175f, 0.0f } } },
 322         { FrontRight,  { DEG2RAD(  30.0f), DEG2RAD(0.0f), { 0.167065f,  0.200583f, -0.172695f, 0.0f, 0.0f, 0.0f, 0.0f,  0.029855f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068910f }, { 0.167065f,  0.153519f, -0.132175f, 0.0f } } },
 323         { FrontCenter, { DEG2RAD(   0.0f), DEG2RAD(0.0f), { 0.109403f,  0.179490f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f,  0.142031f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.072024f, -0.000001f }, { 0.109403f,  0.137375f,  0.000000f, 0.0f } } },
 324         { BackCenter,  { DEG2RAD( 180.0f), DEG2RAD(0.0f), { 0.353556f, -0.461940f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f,  0.165723f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f,  0.000005f }, { 0.353556f, -0.353554f,  0.000000f, 0.0f } } },
 325         { SideLeft,    { DEG2RAD( -90.0f), DEG2RAD(0.0f), { 0.289151f, -0.081301f,  0.401292f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, -0.071420f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.010099f, -0.032897f }, { 0.289151f, -0.062225f,  0.307136f, 0.0f } } },
 326         { SideRight,   { DEG2RAD(  90.0f), DEG2RAD(0.0f), { 0.289151f, -0.081301f, -0.401292f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f,  0.071420f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.010099f,  0.032897f }, { 0.289151f, -0.062225f, -0.307136f, 0.0f } } },
 327     }, X71Cfg[7] = {
 328         { FrontLeft,   { DEG2RAD( -30.0f), DEG2RAD(0.0f), { 0.167065f,  0.200583f,  0.172695f, 0.0f, 0.0f, 0.0f, 0.0f,  0.029855f,  0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f,  0.068910f }, { 0.167065f,  0.153519f,  0.132175f, 0.0f } } },
 329         { FrontRight,  { DEG2RAD(  30.0f), DEG2RAD(0.0f), { 0.167065f,  0.200583f, -0.172695f, 0.0f, 0.0f, 0.0f, 0.0f,  0.029855f, -0.186407f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068910f }, { 0.167065f,  0.153519f, -0.132175f, 0.0f } } },
 330         { FrontCenter, { DEG2RAD(   0.0f), DEG2RAD(0.0f), { 0.109403f,  0.179490f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f,  0.142031f,  0.000000f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.072024f,  0.000000f }, { 0.109403f,  0.137375f,  0.000000f, 0.0f } } },
 331         { BackLeft,    { DEG2RAD(-150.0f), DEG2RAD(0.0f), { 0.224752f, -0.295009f,  0.170325f, 0.0f, 0.0f, 0.0f, 0.0f,  0.105349f, -0.182473f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f,  0.065799f }, { 0.224752f, -0.225790f,  0.130361f, 0.0f } } },
 332         { BackRight,   { DEG2RAD( 150.0f), DEG2RAD(0.0f), { 0.224752f, -0.295009f, -0.170325f, 0.0f, 0.0f, 0.0f, 0.0f,  0.105349f,  0.182473f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f, -0.065799f }, { 0.224752f, -0.225790f, -0.130361f, 0.0f } } },
 333         { SideLeft,    { DEG2RAD( -90.0f), DEG2RAD(0.0f), { 0.224739f,  0.000002f,  0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f,  0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f, -0.065795f }, { 0.224739f,  0.000000f,  0.260717f, 0.0f } } },
 334         { SideRight,   { DEG2RAD(  90.0f), DEG2RAD(0.0f), { 0.224739f,  0.000002f, -0.340644f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, -0.000002f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f,  0.000000f,  0.065795f }, { 0.224739f,  0.000000f, -0.260717f, 0.0f } } },
 335     };
 336     const ChannelMap *chanmap = NULL;
 337     size_t count = 0;
 338
 339     memset(device->Channel, 0, sizeof(device->Channel));
 340     device->NumChannels = 0;
 341
 342     if(LoadChannelSetup(device))
 343         return;
 344
 345     switch(device->FmtChans)
 346     {
 347         case DevFmtMono:
 348             count = COUNTOF(MonoCfg);
 349             chanmap = MonoCfg;
 350             break;
 351
 352         case DevFmtStereo:
 353             count = COUNTOF(StereoCfg);
 354             chanmap = StereoCfg;
 355             break;
 356
 357         case DevFmtQuad:
 358             count = COUNTOF(QuadCfg);
 359             chanmap = QuadCfg;
 360             break;
 361
 362         case DevFmtX51:
 363             count = COUNTOF(X51SideCfg);
 364             chanmap = X51SideCfg;
 365             break;
 366
 367         case DevFmtX51Rear:
 368             count = COUNTOF(X51RearCfg);
 369             chanmap = X51RearCfg;
 370             break;
 371
 372         case DevFmtX61:
 373             count = COUNTOF(X61Cfg);
 374             chanmap = X61Cfg;
 375             break;
 376
 377         case DevFmtX71:
 378             count = COUNTOF(X71Cfg);
 379             chanmap = X71Cfg;
 380             break;
 381     }
 382
 383     SetChannelMap(device, chanmap, count);
 384 }