diff options
Diffstat (limited to 'Alc/ALu.c')
| -rw-r--r-- | Alc/ALu.c | 329 |
1 files changed, 0 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; |