diff options
Diffstat (limited to 'Alc')
| -rw-r--r-- | Alc/ALu.c | 329 | ||||
| -rw-r--r-- | Alc/panning.c | 361 |
2 files changed, 361 insertions, 329 deletions
@@ -113,335 +113,6 @@ static __inline ALvoid aluMatrixVector(ALfloat *vector,ALfloat w,ALfloat matrix[ vector[2] = temp[0]*matrix[0][2] + temp[1]*matrix[1][2] + temp[2]*matrix[2][2] + temp[3]*matrix[3][2]; } -static ALvoid SetSpeakerArrangement(const char *name, ALfloat SpeakerAngle[OUTPUTCHANNELS], - Channel Speaker2Chan[OUTPUTCHANNELS], ALint chans) -{ - char layout_str[256]; - char *confkey, *next; - char *sep, *end; - Channel val; - int i; - - strncpy(layout_str, GetConfigValue(NULL, name, ""), sizeof(layout_str)); - layout_str[255] = 0; - - if(!layout_str[0]) - return; - - next = confkey = layout_str; - while(next && *next) - { - confkey = next; - next = strchr(confkey, ','); - if(next) - { - *next = 0; - do { - next++; - } while(isspace(*next) || *next == ','); - } - - sep = strchr(confkey, '='); - if(!sep || confkey == sep) - continue; - - end = sep - 1; - while(isspace(*end) && end != confkey) - end--; - *(++end) = 0; - - if(strcmp(confkey, "fl") == 0 || strcmp(confkey, "front-left") == 0) - val = FRONT_LEFT; - else if(strcmp(confkey, "fr") == 0 || strcmp(confkey, "front-right") == 0) - val = FRONT_RIGHT; - else if(strcmp(confkey, "fc") == 0 || strcmp(confkey, "front-center") == 0) - val = FRONT_CENTER; - else if(strcmp(confkey, "bl") == 0 || strcmp(confkey, "back-left") == 0) - val = BACK_LEFT; - else if(strcmp(confkey, "br") == 0 || strcmp(confkey, "back-right") == 0) - val = BACK_RIGHT; - else if(strcmp(confkey, "bc") == 0 || strcmp(confkey, "back-center") == 0) - val = BACK_CENTER; - else if(strcmp(confkey, "sl") == 0 || strcmp(confkey, "side-left") == 0) - val = SIDE_LEFT; - else if(strcmp(confkey, "sr") == 0 || strcmp(confkey, "side-right") == 0) - val = SIDE_RIGHT; - else - { - AL_PRINT("Unknown speaker for %s: \"%s\"\n", name, confkey); - continue; - } - - *(sep++) = 0; - while(isspace(*sep)) - sep++; - - for(i = 0;i < chans;i++) - { - if(Speaker2Chan[i] == val) - { - long angle = strtol(sep, NULL, 10); - if(angle >= -180 && angle <= 180) - SpeakerAngle[i] = angle * M_PI/180.0f; - else - AL_PRINT("Invalid angle for speaker \"%s\": %ld\n", confkey, angle); - break; - } - } - } - - for(i = 0;i < chans;i++) - { - int min = i; - int i2; - - for(i2 = i+1;i2 < chans;i2++) - { - if(SpeakerAngle[i2] < SpeakerAngle[min]) - min = i2; - } - - if(min != i) - { - ALfloat tmpf; - Channel tmpc; - - tmpf = SpeakerAngle[i]; - SpeakerAngle[i] = SpeakerAngle[min]; - SpeakerAngle[min] = tmpf; - - tmpc = Speaker2Chan[i]; - Speaker2Chan[i] = Speaker2Chan[min]; - Speaker2Chan[min] = tmpc; - } - } -} - -static __inline ALfloat aluLUTpos2Angle(ALint pos) -{ - if(pos < QUADRANT_NUM) - return aluAtan((ALfloat)pos / (ALfloat)(QUADRANT_NUM - pos)); - if(pos < 2 * QUADRANT_NUM) - return M_PI_2 + aluAtan((ALfloat)(pos - QUADRANT_NUM) / (ALfloat)(2 * QUADRANT_NUM - pos)); - if(pos < 3 * QUADRANT_NUM) - return aluAtan((ALfloat)(pos - 2 * QUADRANT_NUM) / (ALfloat)(3 * QUADRANT_NUM - pos)) - M_PI; - return aluAtan((ALfloat)(pos - 3 * QUADRANT_NUM) / (ALfloat)(4 * QUADRANT_NUM - pos)) - M_PI_2; -} - -ALvoid aluInitPanning(ALCdevice *Device) -{ - ALfloat SpeakerAngle[OUTPUTCHANNELS]; - Channel *Speaker2Chan; - ALfloat Alpha, Theta; - ALint pos, offset; - ALuint s, s2; - - for(s = 0;s < OUTPUTCHANNELS;s++) - { - for(s2 = 0;s2 < OUTPUTCHANNELS;s2++) - Device->ChannelMatrix[s][s2] = ((s==s2) ? 1.0f : 0.0f); - } - - Speaker2Chan = Device->Speaker2Chan; - switch(Device->Format) - { - case AL_FORMAT_MONO8: - case AL_FORMAT_MONO16: - case AL_FORMAT_MONO_FLOAT32: - Device->DuplicateStereo = AL_FALSE; - Device->ChannelMatrix[FRONT_LEFT][FRONT_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[FRONT_RIGHT][FRONT_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_LEFT][FRONT_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_RIGHT][FRONT_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_LEFT][FRONT_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_RIGHT][FRONT_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][FRONT_CENTER] = 1.0f; - Device->NumChan = 1; - Speaker2Chan[0] = FRONT_CENTER; - SpeakerAngle[0] = 0.0f * M_PI/180.0f; - break; - - case AL_FORMAT_STEREO8: - case AL_FORMAT_STEREO16: - case AL_FORMAT_STEREO_FLOAT32: - Device->DuplicateStereo = AL_FALSE; - Device->ChannelMatrix[FRONT_CENTER][FRONT_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[FRONT_CENTER][FRONT_RIGHT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_LEFT][FRONT_LEFT] = 1.0f; - Device->ChannelMatrix[SIDE_RIGHT][FRONT_RIGHT] = 1.0f; - Device->ChannelMatrix[BACK_LEFT][FRONT_LEFT] = 1.0f; - Device->ChannelMatrix[BACK_RIGHT][FRONT_RIGHT] = 1.0f; - Device->ChannelMatrix[BACK_CENTER][FRONT_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][FRONT_RIGHT] = aluSqrt(0.5); - Device->NumChan = 2; - Speaker2Chan[0] = FRONT_LEFT; - Speaker2Chan[1] = FRONT_RIGHT; - SpeakerAngle[0] = -90.0f * M_PI/180.0f; - SpeakerAngle[1] = 90.0f * M_PI/180.0f; - SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); - break; - - case AL_FORMAT_QUAD8: - case AL_FORMAT_QUAD16: - case AL_FORMAT_QUAD32: - Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); - Device->ChannelMatrix[FRONT_CENTER][FRONT_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[FRONT_CENTER][FRONT_RIGHT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_LEFT][FRONT_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_LEFT][BACK_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_RIGHT][FRONT_RIGHT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_RIGHT][BACK_RIGHT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5); - Device->NumChan = 4; - Speaker2Chan[0] = BACK_LEFT; - Speaker2Chan[1] = FRONT_LEFT; - Speaker2Chan[2] = FRONT_RIGHT; - Speaker2Chan[3] = BACK_RIGHT; - SpeakerAngle[0] = -135.0f * M_PI/180.0f; - SpeakerAngle[1] = -45.0f * M_PI/180.0f; - SpeakerAngle[2] = 45.0f * M_PI/180.0f; - SpeakerAngle[3] = 135.0f * M_PI/180.0f; - SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); - break; - - case AL_FORMAT_51CHN8: - case AL_FORMAT_51CHN16: - case AL_FORMAT_51CHN32: - Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); - Device->ChannelMatrix[SIDE_LEFT][FRONT_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_LEFT][BACK_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_RIGHT][FRONT_RIGHT] = aluSqrt(0.5); - Device->ChannelMatrix[SIDE_RIGHT][BACK_RIGHT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5); - Device->NumChan = 5; - Speaker2Chan[0] = BACK_LEFT; - Speaker2Chan[1] = FRONT_LEFT; - Speaker2Chan[2] = FRONT_CENTER; - Speaker2Chan[3] = FRONT_RIGHT; - Speaker2Chan[4] = BACK_RIGHT; - SpeakerAngle[0] = -110.0f * M_PI/180.0f; - SpeakerAngle[1] = -30.0f * M_PI/180.0f; - SpeakerAngle[2] = 0.0f * M_PI/180.0f; - SpeakerAngle[3] = 30.0f * M_PI/180.0f; - SpeakerAngle[4] = 110.0f * M_PI/180.0f; - SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); - break; - - case AL_FORMAT_61CHN8: - case AL_FORMAT_61CHN16: - case AL_FORMAT_61CHN32: - Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); - Device->ChannelMatrix[BACK_LEFT][BACK_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_LEFT][SIDE_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_RIGHT][BACK_CENTER] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_RIGHT][SIDE_RIGHT] = aluSqrt(0.5); - Device->NumChan = 6; - Speaker2Chan[0] = SIDE_LEFT; - Speaker2Chan[1] = FRONT_LEFT; - Speaker2Chan[2] = FRONT_CENTER; - Speaker2Chan[3] = FRONT_RIGHT; - Speaker2Chan[4] = SIDE_RIGHT; - Speaker2Chan[5] = BACK_CENTER; - SpeakerAngle[0] = -90.0f * M_PI/180.0f; - SpeakerAngle[1] = -30.0f * M_PI/180.0f; - SpeakerAngle[2] = 0.0f * M_PI/180.0f; - SpeakerAngle[3] = 30.0f * M_PI/180.0f; - SpeakerAngle[4] = 90.0f * M_PI/180.0f; - SpeakerAngle[5] = 180.0f * M_PI/180.0f; - SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); - break; - - case AL_FORMAT_71CHN8: - case AL_FORMAT_71CHN16: - case AL_FORMAT_71CHN32: - Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); - Device->ChannelMatrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5); - Device->ChannelMatrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5); - Device->NumChan = 7; - Speaker2Chan[0] = BACK_LEFT; - Speaker2Chan[1] = SIDE_LEFT; - Speaker2Chan[2] = FRONT_LEFT; - Speaker2Chan[3] = FRONT_CENTER; - Speaker2Chan[4] = FRONT_RIGHT; - Speaker2Chan[5] = SIDE_RIGHT; - Speaker2Chan[6] = BACK_RIGHT; - SpeakerAngle[0] = -150.0f * M_PI/180.0f; - SpeakerAngle[1] = -90.0f * M_PI/180.0f; - SpeakerAngle[2] = -30.0f * M_PI/180.0f; - SpeakerAngle[3] = 0.0f * M_PI/180.0f; - SpeakerAngle[4] = 30.0f * M_PI/180.0f; - SpeakerAngle[5] = 90.0f * M_PI/180.0f; - SpeakerAngle[6] = 150.0f * M_PI/180.0f; - SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); - break; - - default: - assert(0); - } - - if(GetConfigValueBool(NULL, "scalemix", 0)) - { - ALfloat maxout = 1.0f; - for(s = 0;s < OUTPUTCHANNELS;s++) - { - ALfloat out = 0.0f; - for(s2 = 0;s2 < OUTPUTCHANNELS;s2++) - out += Device->ChannelMatrix[s2][s]; - maxout = __max(maxout, out); - } - - maxout = 1.0f/maxout; - for(s = 0;s < OUTPUTCHANNELS;s++) - { - for(s2 = 0;s2 < OUTPUTCHANNELS;s2++) - Device->ChannelMatrix[s2][s] *= maxout; - } - } - - for(pos = 0; pos < LUT_NUM; pos++) - { - /* clear all values */ - offset = OUTPUTCHANNELS * pos; - for(s = 0; s < OUTPUTCHANNELS; s++) - Device->PanningLUT[offset+s] = 0.0f; - - if(Device->NumChan == 1) - { - Device->PanningLUT[offset + Speaker2Chan[0]] = 1.0f; - continue; - } - - /* source angle */ - Theta = aluLUTpos2Angle(pos); - - /* set panning values */ - for(s = 0; s < Device->NumChan - 1; s++) - { - if(Theta >= SpeakerAngle[s] && Theta < SpeakerAngle[s+1]) - { - /* source between speaker s and speaker s+1 */ - Alpha = M_PI_2 * (Theta-SpeakerAngle[s]) / - (SpeakerAngle[s+1]-SpeakerAngle[s]); - Device->PanningLUT[offset + Speaker2Chan[s]] = cos(Alpha); - Device->PanningLUT[offset + Speaker2Chan[s+1]] = sin(Alpha); - break; - } - } - if(s == Device->NumChan - 1) - { - /* source between last and first speaker */ - if(Theta < SpeakerAngle[0]) - Theta += 2.0f * M_PI; - Alpha = M_PI_2 * (Theta-SpeakerAngle[s]) / - (2.0f * M_PI + SpeakerAngle[0]-SpeakerAngle[s]); - Device->PanningLUT[offset + Speaker2Chan[s]] = cos(Alpha); - Device->PanningLUT[offset + Speaker2Chan[0]] = sin(Alpha); - } - } -} - static ALvoid CalcNonAttnSourceParams(const ALCcontext *ALContext, ALsource *ALSource) { ALfloat SourceVolume,ListenerGain,MinVolume,MaxVolume; diff --git a/Alc/panning.c b/Alc/panning.c new file mode 100644 index 00000000..64e00538 --- /dev/null +++ b/Alc/panning.c @@ -0,0 +1,361 @@ +/** + * OpenAL cross platform audio library + * Copyright (C) 1999-2010 by authors. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * Or go to http://www.gnu.org/copyleft/lgpl.html + */ + +#include "config.h" + +#include <math.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <assert.h> + +#include "alMain.h" +#include "AL/al.h" +#include "AL/alc.h" +#include "alu.h" + +static void SetSpeakerArrangement(const char *name, ALfloat SpeakerAngle[OUTPUTCHANNELS], + Channel Speaker2Chan[OUTPUTCHANNELS], ALint chans) +{ + char layout_str[256]; + char *confkey, *next; + char *sep, *end; + Channel val; + int i; + + strncpy(layout_str, GetConfigValue(NULL, name, ""), sizeof(layout_str)); + layout_str[sizeof(layout_str)-1] = 0; + + if(!layout_str[0]) + return; + + next = confkey = layout_str; + while(next && *next) + { + confkey = next; + next = strchr(confkey, ','); + if(next) + { + *next = 0; + do { + next++; + } while(isspace(*next) || *next == ','); + } + + sep = strchr(confkey, '='); + if(!sep || confkey == sep) + continue; + + end = sep - 1; + while(isspace(*end) && end != confkey) + end--; + *(++end) = 0; + + if(strcmp(confkey, "fl") == 0 || strcmp(confkey, "front-left") == 0) + val = FRONT_LEFT; + else if(strcmp(confkey, "fr") == 0 || strcmp(confkey, "front-right") == 0) + val = FRONT_RIGHT; + else if(strcmp(confkey, "fc") == 0 || strcmp(confkey, "front-center") == 0) + val = FRONT_CENTER; + else if(strcmp(confkey, "bl") == 0 || strcmp(confkey, "back-left") == 0) + val = BACK_LEFT; + else if(strcmp(confkey, "br") == 0 || strcmp(confkey, "back-right") == 0) + val = BACK_RIGHT; + else if(strcmp(confkey, "bc") == 0 || strcmp(confkey, "back-center") == 0) + val = BACK_CENTER; + else if(strcmp(confkey, "sl") == 0 || strcmp(confkey, "side-left") == 0) + val = SIDE_LEFT; + else if(strcmp(confkey, "sr") == 0 || strcmp(confkey, "side-right") == 0) + val = SIDE_RIGHT; + else + { + AL_PRINT("Unknown speaker for %s: \"%s\"\n", name, confkey); + continue; + } + + *(sep++) = 0; + while(isspace(*sep)) + sep++; + + for(i = 0;i < chans;i++) + { + if(Speaker2Chan[i] == val) + { + long angle = strtol(sep, NULL, 10); + if(angle >= -180 && angle <= 180) + SpeakerAngle[i] = angle * M_PI/180.0f; + else + AL_PRINT("Invalid angle for speaker \"%s\": %ld\n", confkey, angle); + break; + } + } + } + + for(i = 0;i < chans;i++) + { + int min = i; + int i2; + + for(i2 = i+1;i2 < chans;i2++) + { + if(SpeakerAngle[i2] < SpeakerAngle[min]) + min = i2; + } + + if(min != i) + { + ALfloat tmpf; + Channel tmpc; + + tmpf = SpeakerAngle[i]; + SpeakerAngle[i] = SpeakerAngle[min]; + SpeakerAngle[min] = tmpf; + + tmpc = Speaker2Chan[i]; + Speaker2Chan[i] = Speaker2Chan[min]; + Speaker2Chan[min] = tmpc; + } + } +} + +static ALfloat aluLUTpos2Angle(ALint pos) +{ + if(pos < QUADRANT_NUM) + return aluAtan((ALfloat)pos / (ALfloat)(QUADRANT_NUM - pos)); + if(pos < 2 * QUADRANT_NUM) + return M_PI_2 + aluAtan((ALfloat)(pos - QUADRANT_NUM) / (ALfloat)(2 * QUADRANT_NUM - pos)); + if(pos < 3 * QUADRANT_NUM) + return aluAtan((ALfloat)(pos - 2 * QUADRANT_NUM) / (ALfloat)(3 * QUADRANT_NUM - pos)) - M_PI; + return aluAtan((ALfloat)(pos - 3 * QUADRANT_NUM) / (ALfloat)(4 * QUADRANT_NUM - pos)) - M_PI_2; +} + +ALvoid aluInitPanning(ALCdevice *Device) +{ + ALfloat SpeakerAngle[OUTPUTCHANNELS]; + Channel *Speaker2Chan; + ALfloat Alpha, Theta; + ALint pos, offset; + ALuint s, s2; + + for(s = 0;s < OUTPUTCHANNELS;s++) + { + for(s2 = 0;s2 < OUTPUTCHANNELS;s2++) + Device->ChannelMatrix[s][s2] = ((s==s2) ? 1.0f : 0.0f); + } + + Speaker2Chan = Device->Speaker2Chan; + switch(Device->Format) + { + case AL_FORMAT_MONO8: + case AL_FORMAT_MONO16: + case AL_FORMAT_MONO_FLOAT32: + Device->DuplicateStereo = AL_FALSE; + Device->ChannelMatrix[FRONT_LEFT][FRONT_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[FRONT_RIGHT][FRONT_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_LEFT][FRONT_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_RIGHT][FRONT_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_LEFT][FRONT_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_RIGHT][FRONT_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][FRONT_CENTER] = 1.0f; + Device->NumChan = 1; + Speaker2Chan[0] = FRONT_CENTER; + SpeakerAngle[0] = 0.0f * M_PI/180.0f; + break; + + case AL_FORMAT_STEREO8: + case AL_FORMAT_STEREO16: + case AL_FORMAT_STEREO_FLOAT32: + Device->DuplicateStereo = AL_FALSE; + Device->ChannelMatrix[FRONT_CENTER][FRONT_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[FRONT_CENTER][FRONT_RIGHT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_LEFT][FRONT_LEFT] = 1.0f; + Device->ChannelMatrix[SIDE_RIGHT][FRONT_RIGHT] = 1.0f; + Device->ChannelMatrix[BACK_LEFT][FRONT_LEFT] = 1.0f; + Device->ChannelMatrix[BACK_RIGHT][FRONT_RIGHT] = 1.0f; + Device->ChannelMatrix[BACK_CENTER][FRONT_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][FRONT_RIGHT] = aluSqrt(0.5); + Device->NumChan = 2; + Speaker2Chan[0] = FRONT_LEFT; + Speaker2Chan[1] = FRONT_RIGHT; + SpeakerAngle[0] = -90.0f * M_PI/180.0f; + SpeakerAngle[1] = 90.0f * M_PI/180.0f; + SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); + break; + + case AL_FORMAT_QUAD8: + case AL_FORMAT_QUAD16: + case AL_FORMAT_QUAD32: + Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); + Device->ChannelMatrix[FRONT_CENTER][FRONT_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[FRONT_CENTER][FRONT_RIGHT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_LEFT][FRONT_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_LEFT][BACK_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_RIGHT][FRONT_RIGHT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_RIGHT][BACK_RIGHT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5); + Device->NumChan = 4; + Speaker2Chan[0] = BACK_LEFT; + Speaker2Chan[1] = FRONT_LEFT; + Speaker2Chan[2] = FRONT_RIGHT; + Speaker2Chan[3] = BACK_RIGHT; + SpeakerAngle[0] = -135.0f * M_PI/180.0f; + SpeakerAngle[1] = -45.0f * M_PI/180.0f; + SpeakerAngle[2] = 45.0f * M_PI/180.0f; + SpeakerAngle[3] = 135.0f * M_PI/180.0f; + SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); + break; + + case AL_FORMAT_51CHN8: + case AL_FORMAT_51CHN16: + case AL_FORMAT_51CHN32: + Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); + Device->ChannelMatrix[SIDE_LEFT][FRONT_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_LEFT][BACK_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_RIGHT][FRONT_RIGHT] = aluSqrt(0.5); + Device->ChannelMatrix[SIDE_RIGHT][BACK_RIGHT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5); + Device->NumChan = 5; + Speaker2Chan[0] = BACK_LEFT; + Speaker2Chan[1] = FRONT_LEFT; + Speaker2Chan[2] = FRONT_CENTER; + Speaker2Chan[3] = FRONT_RIGHT; + Speaker2Chan[4] = BACK_RIGHT; + SpeakerAngle[0] = -110.0f * M_PI/180.0f; + SpeakerAngle[1] = -30.0f * M_PI/180.0f; + SpeakerAngle[2] = 0.0f * M_PI/180.0f; + SpeakerAngle[3] = 30.0f * M_PI/180.0f; + SpeakerAngle[4] = 110.0f * M_PI/180.0f; + SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); + break; + + case AL_FORMAT_61CHN8: + case AL_FORMAT_61CHN16: + case AL_FORMAT_61CHN32: + Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); + Device->ChannelMatrix[BACK_LEFT][BACK_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_LEFT][SIDE_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_RIGHT][BACK_CENTER] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_RIGHT][SIDE_RIGHT] = aluSqrt(0.5); + Device->NumChan = 6; + Speaker2Chan[0] = SIDE_LEFT; + Speaker2Chan[1] = FRONT_LEFT; + Speaker2Chan[2] = FRONT_CENTER; + Speaker2Chan[3] = FRONT_RIGHT; + Speaker2Chan[4] = SIDE_RIGHT; + Speaker2Chan[5] = BACK_CENTER; + SpeakerAngle[0] = -90.0f * M_PI/180.0f; + SpeakerAngle[1] = -30.0f * M_PI/180.0f; + SpeakerAngle[2] = 0.0f * M_PI/180.0f; + SpeakerAngle[3] = 30.0f * M_PI/180.0f; + SpeakerAngle[4] = 90.0f * M_PI/180.0f; + SpeakerAngle[5] = 180.0f * M_PI/180.0f; + SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); + break; + + case AL_FORMAT_71CHN8: + case AL_FORMAT_71CHN16: + case AL_FORMAT_71CHN32: + Device->DuplicateStereo = GetConfigValueBool(NULL, "stereodup", 0); + Device->ChannelMatrix[BACK_CENTER][BACK_LEFT] = aluSqrt(0.5); + Device->ChannelMatrix[BACK_CENTER][BACK_RIGHT] = aluSqrt(0.5); + Device->NumChan = 7; + Speaker2Chan[0] = BACK_LEFT; + Speaker2Chan[1] = SIDE_LEFT; + Speaker2Chan[2] = FRONT_LEFT; + Speaker2Chan[3] = FRONT_CENTER; + Speaker2Chan[4] = FRONT_RIGHT; + Speaker2Chan[5] = SIDE_RIGHT; + Speaker2Chan[6] = BACK_RIGHT; + SpeakerAngle[0] = -150.0f * M_PI/180.0f; + SpeakerAngle[1] = -90.0f * M_PI/180.0f; + SpeakerAngle[2] = -30.0f * M_PI/180.0f; + SpeakerAngle[3] = 0.0f * M_PI/180.0f; + SpeakerAngle[4] = 30.0f * M_PI/180.0f; + SpeakerAngle[5] = 90.0f * M_PI/180.0f; + SpeakerAngle[6] = 150.0f * M_PI/180.0f; + SetSpeakerArrangement("layout", SpeakerAngle, Speaker2Chan, Device->NumChan); + break; + + default: + assert(0); + } + + if(GetConfigValueBool(NULL, "scalemix", 0)) + { + ALfloat maxout = 1.0f; + for(s = 0;s < OUTPUTCHANNELS;s++) + { + ALfloat out = 0.0f; + for(s2 = 0;s2 < OUTPUTCHANNELS;s2++) + out += Device->ChannelMatrix[s2][s]; + maxout = __max(maxout, out); + } + + maxout = 1.0f/maxout; + for(s = 0;s < OUTPUTCHANNELS;s++) + { + for(s2 = 0;s2 < OUTPUTCHANNELS;s2++) + Device->ChannelMatrix[s2][s] *= maxout; + } + } + + for(pos = 0; pos < LUT_NUM; pos++) + { + /* clear all values */ + offset = OUTPUTCHANNELS * pos; + for(s = 0; s < OUTPUTCHANNELS; s++) + Device->PanningLUT[offset+s] = 0.0f; + + if(Device->NumChan == 1) + { + Device->PanningLUT[offset + Speaker2Chan[0]] = 1.0f; + continue; + } + + /* source angle */ + Theta = aluLUTpos2Angle(pos); + + /* set panning values */ + for(s = 0; s < Device->NumChan - 1; s++) + { + if(Theta >= SpeakerAngle[s] && Theta < SpeakerAngle[s+1]) + { + /* source between speaker s and speaker s+1 */ + Alpha = M_PI_2 * (Theta-SpeakerAngle[s]) / + (SpeakerAngle[s+1]-SpeakerAngle[s]); + Device->PanningLUT[offset + Speaker2Chan[s]] = cos(Alpha); + Device->PanningLUT[offset + Speaker2Chan[s+1]] = sin(Alpha); + break; + } + } + if(s == Device->NumChan - 1) + { + /* source between last and first speaker */ + if(Theta < SpeakerAngle[0]) + Theta += 2.0f * M_PI; + Alpha = M_PI_2 * (Theta-SpeakerAngle[s]) / + (2.0f * M_PI + SpeakerAngle[0]-SpeakerAngle[s]); + Device->PanningLUT[offset + Speaker2Chan[s]] = cos(Alpha); + Device->PanningLUT[offset + Speaker2Chan[0]] = sin(Alpha); + } + } +} |