Slightly increase the ambient gain volume
[openal-soft.git] / Alc / panning.c
blobf0adcbccfac020fa1974c4d972d7406870d32edd
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.
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.
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
21 #include "config.h"
23 #include <math.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <ctype.h>
27 #include <assert.h>
29 #include "alMain.h"
30 #include "AL/al.h"
31 #include "AL/alc.h"
32 #include "alu.h"
33 #include "bool.h"
36 void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat elevation, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
38 ALfloat dir[3] = {
39 sinf(angle) * cosf(elevation),
40 sinf(elevation),
41 -cosf(angle) * cosf(elevation)
43 ComputeDirectionalGains(device, dir, ingain, gains);
46 void ComputeDirectionalGains(const ALCdevice *device, const ALfloat dir[3], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
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];
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) */
72 for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
73 gains[i] = 0.0f;
74 for(i = 0;i < device->NumChannels;i++)
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;
82 void ComputeAmbientGains(const ALCdevice *device, ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
84 ALuint i;
86 for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
87 gains[i] = 0.0f;
88 for(i = 0;i < device->NumChannels;i++)
90 // The W coefficients are based on a mathematical average of the
91 // output, scaled by sqrt(2) to compensate for FuMa-style Ambisonics
92 // scaling the W channel input by sqrt(0.5). The square root of the
93 // base average provides for a more perceptual average volume, better
94 // suited to non-directional gains.
95 gains[i] = sqrtf(device->Channel[i].HOACoeff[0]/1.4142f)*1.4142f * ingain;
99 void ComputeBFormatGains(const ALCdevice *device, const ALfloat mtx[4], ALfloat ingain, ALfloat gains[MAX_OUTPUT_CHANNELS])
101 ALuint i, j;
103 for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
104 gains[i] = 0.0f;
105 for(i = 0;i < device->NumChannels;i++)
107 for(j = 0;j < 4;j++)
108 gains[i] += device->Channel[i].FOACoeff[j] * mtx[j];
109 gains[i] *= ingain;
114 static inline const char *GetLabelFromChannel(enum Channel channel)
116 switch(channel)
118 case FrontLeft: return "front-left";
119 case FrontRight: return "front-right";
120 case FrontCenter: return "front-center";
121 case LFE: return "lfe";
122 case BackLeft: return "back-left";
123 case BackRight: return "back-right";
124 case BackCenter: return "back-center";
125 case SideLeft: return "side-left";
126 case SideRight: return "side-right";
127 case InvalidChannel: break;
129 return "(unknown)";
133 typedef struct ChannelMap {
134 enum Channel ChanName;
135 ChannelConfig Config;
136 } ChannelMap;
138 static void SetChannelMap(ALCdevice *device, const ChannelMap *chanmap, size_t count)
140 size_t i, j;
142 for(i = 0;i < MAX_OUTPUT_CHANNELS && device->ChannelName[i] != InvalidChannel;i++)
144 if(device->ChannelName[i] == LFE)
146 device->Channel[i].Angle = 0.0f;
147 device->Channel[i].Elevation = 0.0f;
148 for(j = 0;j < MAX_AMBI_COEFFS;j++)
149 device->Channel[i].HOACoeff[j] = 0.0f;
150 for(j = 0;j < 4;j++)
151 device->Channel[i].FOACoeff[j] = 0.0f;
152 continue;
155 for(j = 0;j < count;j++)
157 if(device->ChannelName[i] == chanmap[j].ChanName)
159 device->Channel[i] = chanmap[j].Config;
160 break;
163 if(j == count)
164 ERR("Failed to match %s channel ("SZFMT") in config\n", GetLabelFromChannel(device->ChannelName[i]), i);
166 device->NumChannels = i;
169 static bool LoadChannelSetup(ALCdevice *device)
171 static const enum Channel mono_chans[1] = {
172 FrontCenter
173 }, stereo_chans[2] = {
174 FrontLeft, FrontRight
175 }, quad_chans[4] = {
176 FrontLeft, FrontRight,
177 BackLeft, BackRight
178 }, surround51_chans[5] = {
179 FrontLeft, FrontRight, FrontCenter,
180 SideLeft, SideRight
181 }, surround51rear_chans[5] = {
182 FrontLeft, FrontRight, FrontCenter,
183 BackLeft, BackRight
184 }, surround61_chans[6] = {
185 FrontLeft, FrontRight,
186 FrontCenter, BackCenter,
187 SideLeft, SideRight
188 }, surround71_chans[7] = {
189 FrontLeft, FrontRight, FrontCenter,
190 BackLeft, BackRight,
191 SideLeft, SideRight
193 ChannelMap chanmap[MAX_OUTPUT_CHANNELS];
194 const enum Channel *channels = NULL;
195 const char *layout = NULL;
196 size_t count = 0;
197 size_t i;
199 switch(device->FmtChans)
201 case DevFmtMono:
202 layout = "mono";
203 channels = mono_chans;
204 count = COUNTOF(mono_chans);
205 break;
206 case DevFmtStereo:
207 layout = "stereo";
208 channels = stereo_chans;
209 count = COUNTOF(stereo_chans);
210 break;
211 case DevFmtQuad:
212 layout = "quad";
213 channels = quad_chans;
214 count = COUNTOF(quad_chans);
215 break;
216 case DevFmtX51:
217 layout = "surround51";
218 channels = surround51_chans;
219 count = COUNTOF(surround51_chans);
220 break;
221 case DevFmtX51Rear:
222 layout = "surround51rear";
223 channels = surround51rear_chans;
224 count = COUNTOF(surround51rear_chans);
225 break;
226 case DevFmtX61:
227 layout = "surround61";
228 channels = surround61_chans;
229 count = COUNTOF(surround61_chans);
230 break;
231 case DevFmtX71:
232 layout = "surround71";
233 channels = surround71_chans;
234 count = COUNTOF(surround71_chans);
235 break;
238 if(!layout)
239 return false;
240 else
242 char name[32];
243 snprintf(name, sizeof(name), "%s/enable", layout);
244 if(!GetConfigValueBool("layouts", name, 0))
245 return false;
248 for(i = 0;i < count;i++)
250 const char *channame;
251 char chanlayout[32];
252 const char *value;
253 int props;
255 chanmap[i].ChanName = channels[i];
256 channame = GetLabelFromChannel(channels[i]);
258 snprintf(chanlayout, sizeof(chanlayout), "%s/%s", layout, channame);
259 if(!ConfigValueStr("layouts", chanlayout, &value))
261 ERR("Missing channel %s\n", channame);
262 return false;
264 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",
265 &chanmap[i].Config.Angle, &chanmap[i].Config.Elevation,
266 &chanmap[i].Config.HOACoeff[0], &chanmap[i].Config.HOACoeff[1], &chanmap[i].Config.HOACoeff[2],
267 &chanmap[i].Config.HOACoeff[3], &chanmap[i].Config.HOACoeff[4], &chanmap[i].Config.HOACoeff[5],
268 &chanmap[i].Config.HOACoeff[6], &chanmap[i].Config.HOACoeff[7], &chanmap[i].Config.HOACoeff[8],
269 &chanmap[i].Config.HOACoeff[9], &chanmap[i].Config.HOACoeff[10], &chanmap[i].Config.HOACoeff[11],
270 &chanmap[i].Config.HOACoeff[12], &chanmap[i].Config.HOACoeff[13], &chanmap[i].Config.HOACoeff[14],
271 &chanmap[i].Config.HOACoeff[15], &chanmap[i].Config.FOACoeff[0], &chanmap[i].Config.FOACoeff[1],
272 &chanmap[i].Config.FOACoeff[2], &chanmap[i].Config.FOACoeff[3]);
273 if(props == 0)
275 ERR("Failed to parse %s channel's properties\n", channame);
276 return false;
279 if(props < 22)
281 ERR("Failed to parse %s channel's elements (expected 22, got %d)\n", channame, props);
282 return false;
284 else
286 if(!(chanmap[i].Config.Angle >= -180.0f && chanmap[i].Config.Angle <= 180.0f))
288 ERR("%s channel angle is out of range (%f not within -180...+180 degrees)\n", channame, chanmap[i].Config.Angle);
289 return false;
291 chanmap[i].Config.Angle = DEG2RAD(chanmap[i].Config.Angle);
293 if(!(chanmap[i].Config.Elevation >= -180.0f && chanmap[i].Config.Elevation <= 180.0f))
295 ERR("%s channel elevation is out of range (%f not within -180...+180 degrees)\n", channame, chanmap[i].Config.Elevation);
296 return false;
298 chanmap[i].Config.Elevation = DEG2RAD(chanmap[i].Config.Elevation);
301 SetChannelMap(device, chanmap, count);
302 return true;
305 ALvoid aluInitPanning(ALCdevice *device)
307 static const ChannelMap MonoCfg[1] = {
308 { FrontCenter, { DEG2RAD( 0.0f), DEG2RAD(0.0f), { 1.4142f }, { 1.4142f } } },
309 }, StereoCfg[2] = {
310 { FrontLeft, { DEG2RAD( -90.0f), DEG2RAD(0.0f), { 0.7071f, 0.0f, 0.5f, 0.0f }, { 0.7071f, 0.0f, 0.5f, 0.0f } } },
311 { FrontRight, { DEG2RAD( 90.0f), DEG2RAD(0.0f), { 0.7071f, 0.0f, -0.5f, 0.0f }, { 0.7071f, 0.0f, -0.5f, 0.0f } } },
312 }, QuadCfg[4] = {
313 { 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 } } },
314 { 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 } } },
315 { 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 } } },
316 { 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 } } },
317 }, X51SideCfg[5] = {
318 { 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 } } },
319 { 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 } } },
320 { 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 } } },
321 { 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 } } },
322 { 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 } } },
323 }, X51RearCfg[5] = {
324 { 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 } } },
325 { 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 } } },
326 { 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 } } },
327 { 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 } } },
328 { 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 } } },
329 }, X61Cfg[6] = {
330 { 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 } } },
331 { 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 } } },
332 { 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 } } },
333 { 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 } } },
334 { 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 } } },
335 { 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 } } },
336 }, X71Cfg[7] = {
337 { 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 } } },
338 { 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 } } },
339 { 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 } } },
340 { 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 } } },
341 { 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 } } },
342 { 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 } } },
343 { 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 } } },
345 const ChannelMap *chanmap = NULL;
346 size_t count = 0;
348 memset(device->Channel, 0, sizeof(device->Channel));
349 device->NumChannels = 0;
351 if(LoadChannelSetup(device))
352 return;
354 switch(device->FmtChans)
356 case DevFmtMono:
357 count = COUNTOF(MonoCfg);
358 chanmap = MonoCfg;
359 break;
361 case DevFmtStereo:
362 count = COUNTOF(StereoCfg);
363 chanmap = StereoCfg;
364 break;
366 case DevFmtQuad:
367 count = COUNTOF(QuadCfg);
368 chanmap = QuadCfg;
369 break;
371 case DevFmtX51:
372 count = COUNTOF(X51SideCfg);
373 chanmap = X51SideCfg;
374 break;
376 case DevFmtX51Rear:
377 count = COUNTOF(X51RearCfg);
378 chanmap = X51RearCfg;
379 break;
381 case DevFmtX61:
382 count = COUNTOF(X61Cfg);
383 chanmap = X61Cfg;
384 break;
386 case DevFmtX71:
387 count = COUNTOF(X71Cfg);
388 chanmap = X71Cfg;
389 break;
392 SetChannelMap(device, chanmap, count);