diff options
Diffstat (limited to 'Alc/panning.c')
| -rw-r--r-- | Alc/panning.c | 225 |
1 files changed, 110 insertions, 115 deletions
diff --git a/Alc/panning.c b/Alc/panning.c index a3f6d09a..d0c89071 100644 --- a/Alc/panning.c +++ b/Alc/panning.c @@ -33,111 +33,51 @@ extern inline void SetGains(const ALCdevice *device, ALfloat ingain, ALfloat gains[MaxChannels]); -static void SetSpeakerArrangement(const char *name, ALCdevice *device) -{ - char *confkey, *next; - char *layout_str; - char *sep, *end; - enum Channel val; - const char *str; - ALuint i; - - if(!ConfigValueStr(NULL, name, &str) && !ConfigValueStr(NULL, "layout", &str)) - return; - - layout_str = strdup(str); - 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) - { - ERR("Malformed speaker key: %s\n", confkey); - continue; - } - - end = sep - 1; - while(isspace(*end) && end != confkey) - end--; - *(++end) = 0; - - if(strcmp(confkey, "fl") == 0 || strcmp(confkey, "front-left") == 0) - val = FrontLeft; - else if(strcmp(confkey, "fr") == 0 || strcmp(confkey, "front-right") == 0) - val = FrontRight; - else if(strcmp(confkey, "fc") == 0 || strcmp(confkey, "front-center") == 0) - val = FrontCenter; - else if(strcmp(confkey, "bl") == 0 || strcmp(confkey, "back-left") == 0) - val = BackLeft; - else if(strcmp(confkey, "br") == 0 || strcmp(confkey, "back-right") == 0) - val = BackRight; - else if(strcmp(confkey, "bc") == 0 || strcmp(confkey, "back-center") == 0) - val = BackCenter; - else if(strcmp(confkey, "sl") == 0 || strcmp(confkey, "side-left") == 0) - val = SideLeft; - else if(strcmp(confkey, "sr") == 0 || strcmp(confkey, "side-right") == 0) - val = SideRight; - else - { - ERR("Unknown speaker for %s: \"%s\"\n", name, confkey); - continue; - } - - *(sep++) = 0; - while(isspace(*sep)) - sep++; - - for(i = 0;i < device->NumSpeakers;i++) - { - if(device->Speaker[i].ChanName == val) - { - long angle = strtol(sep, NULL, 10); - if(angle >= -180 && angle <= 180) - device->Speaker[i].Angle = DEG2RAD(angle); - else - ERR("Invalid angle for speaker \"%s\": %ld\n", confkey, angle); - break; - } - } - } - free(layout_str); - layout_str = NULL; - - for(i = 0;i < device->NumSpeakers;i++) - { - ALuint min = i; - ALuint i2; - for(i2 = i+1;i2 < device->NumSpeakers;i2++) - { - if(device->Speaker[i2].Angle < device->Speaker[min].Angle) - min = i2; - } +static inline void Set0thOrder(ALfloat coeffs[16], ALfloat w) +{ + coeffs[0] = w; +} - if(min != i) - { - ALfloat tmpf; - enum Channel tmpc; +static inline void Set1stOrder(ALfloat coeffs[16], ALfloat w, ALfloat x, ALfloat y, ALfloat z) +{ + coeffs[0] = w; + coeffs[1] = x; + coeffs[2] = y; + coeffs[3] = z; +} - tmpf = device->Speaker[i].Angle; - device->Speaker[i].Angle = device->Speaker[min].Angle; - device->Speaker[min].Angle = tmpf; +static inline void Set2ndOrder(ALfloat coeffs[16], ALfloat w, ALfloat x, ALfloat y, ALfloat z, ALfloat r, ALfloat s, ALfloat t, ALfloat u, ALfloat v) +{ + coeffs[0] = w; + coeffs[1] = x; + coeffs[2] = y; + coeffs[3] = z; + coeffs[4] = r; + coeffs[5] = s; + coeffs[6] = t; + coeffs[7] = u; + coeffs[8] = v; +} - tmpc = device->Speaker[i].ChanName; - device->Speaker[i].ChanName = device->Speaker[min].ChanName; - device->Speaker[min].ChanName = tmpc; - } - } +static inline void Set3rdOrder(ALfloat coeffs[16], ALfloat w, ALfloat x, ALfloat y, ALfloat z, ALfloat r, ALfloat s, ALfloat t, ALfloat u, ALfloat v, ALfloat k, ALfloat l, ALfloat m, ALfloat n, ALfloat o, ALfloat p, ALfloat q) +{ + coeffs[0] = w; + coeffs[1] = x; + coeffs[2] = y; + coeffs[3] = z; + coeffs[4] = r; + coeffs[5] = s; + coeffs[6] = t; + coeffs[7] = u; + coeffs[8] = v; + coeffs[9] = k; + coeffs[10] = l; + coeffs[11] = m; + coeffs[12] = n; + coeffs[13] = o; + coeffs[14] = p; + coeffs[15] = q; } @@ -155,12 +95,13 @@ void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat hwidth, A for(i = 0;i < device->NumSpeakers;i++) SpeakerAngle[i] = device->Speaker[i].Angle; + for(i = 0;i < MaxChannels;i++) + gains[i] = 0.0f; + /* Some easy special-cases first... */ if(device->NumSpeakers <= 1 || hwidth >= F_PI) { /* Full coverage for all speakers. */ - for(i = 0;i < MaxChannels;i++) - gains[i] = 0.0f; for(i = 0;i < device->NumSpeakers;i++) { enum Channel chan = Speaker2Chan[i]; @@ -171,8 +112,6 @@ void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat hwidth, A if(hwidth <= 0.0f) { /* Infinitely small sound point. */ - for(i = 0;i < MaxChannels;i++) - gains[i] = 0.0f; for(i = 0;i < device->NumSpeakers-1;i++) { if(angle >= SpeakerAngle[i] && angle < SpeakerAngle[i+1]) @@ -338,10 +277,45 @@ void ComputeAngleGains(const ALCdevice *device, ALfloat angle, ALfloat hwidth, A } } +void ComputeDirectionalGains(const ALCdevice *device, const ALfloat dir[3], ALfloat ingain, ALfloat gains[MaxChannels]) +{ + ALfloat coeffs[MAX_AMBI_COEFFS]; + ALuint i, j; + + /* Convert from OpenAL coords to Ambisonics. */ + coeffs[0] = 0.7071f; /* sqrt(1.0 / 2.0) */ + coeffs[1] = -dir[2]; /* X */ + coeffs[2] = -dir[0]; /* Y */ + coeffs[3] = dir[1]; /* Z */ + coeffs[4] = 0.5f * (3.0f*dir[1]*dir[1] - 1.0f); /* 0.5 * (3*Z*Z - 1) */ + coeffs[5] = 2.0f * dir[1] * -dir[2]; /* 2*Z*X */ + coeffs[6] = 2.0f * -dir[0] * dir[1]; /* 2*Y*Z */ + coeffs[7] = dir[2]*dir[2] - dir[0]*dir[0]; /* X*X - Y*Y */ + coeffs[8] = 2.0f * -dir[2] * -dir[0]; /* 2*X*Y */ + coeffs[9] = 0.5f * dir[1] * (5.0f*dir[1]*dir[1] - 3.0f); /* 0.5 * Z * (5*Z*Z - 3) */ + coeffs[10] = 0.7262f * -dir[2] * (5.0f*dir[1]*dir[1] - 1.0f); /* sqrt(135.0 / 256.0) * X * (5*Z*Z - 1) */ + coeffs[11] = 0.7262f * -dir[0] * (5.0f*dir[1]*dir[1] - 1.0f); /* sqrt(135.0 / 256.0) * Y * (5*Z*Z - 1) */ + coeffs[12] = 2.5981f * dir[1] * (dir[2]*dir[2] - dir[0]*dir[0]); /* sqrt(27.0 / 4.0) * Z * (X*X - Y*Y) */ + coeffs[13] = 5.1962f * -dir[2] * -dir[0] * dir[1]; /* sqrt(27) * X * Y * Z */ + coeffs[14] = -dir[2] * (dir[2]*dir[2] - 3.0f*dir[0]*dir[0]); /* X * (X*X - 3*Y*Y) */ + coeffs[15] = -dir[0] * (3.0f*dir[2]*dir[2] - dir[0]*dir[0]); /* Y * (3*X*X - Y*Y) */ + + for(i = 0;i < MaxChannels;i++) + gains[i] = 0.0f; + for(i = 0;i < device->NumSpeakers;i++) + { + enum Channel chan = device->Speaker[i].ChanName; + for(j = 0;j < MAX_AMBI_COEFFS;j++) + gains[chan] += device->Speaker[i].Coeff[j]*coeffs[j]; + gains[chan] = maxf(gains[chan], 0.0f) * ingain; + } +} + ALvoid aluInitPanning(ALCdevice *device) { - const char *layoutname = NULL; + memset(device->Speaker, 0, sizeof(device->Speaker)); + device->NumSpeakers = 0; switch(device->FmtChans) { @@ -349,7 +323,7 @@ ALvoid aluInitPanning(ALCdevice *device) device->NumSpeakers = 1; device->Speaker[0].ChanName = FrontCenter; device->Speaker[0].Angle = DEG2RAD(0.0f); - layoutname = NULL; + Set0thOrder(device->Speaker[0].Coeff, 1.4142f); break; case DevFmtStereo: @@ -358,7 +332,8 @@ ALvoid aluInitPanning(ALCdevice *device) device->Speaker[1].ChanName = FrontRight; device->Speaker[0].Angle = DEG2RAD(-90.0f); device->Speaker[1].Angle = DEG2RAD( 90.0f); - layoutname = "layout_stereo"; + Set1stOrder(device->Speaker[0].Coeff, 0.7071f, -0.5f, 0.0f, 0.0f); + Set1stOrder(device->Speaker[1].Coeff, 0.7071f, 0.5f, 0.0f, 0.0f); break; case DevFmtQuad: @@ -371,7 +346,10 @@ ALvoid aluInitPanning(ALCdevice *device) device->Speaker[1].Angle = DEG2RAD( -45.0f); device->Speaker[2].Angle = DEG2RAD( 45.0f); device->Speaker[3].Angle = DEG2RAD( 135.0f); - layoutname = "layout_quad"; + Set2ndOrder(device->Speaker[0].Coeff, 0.353543f, -0.306192f, 0.306181f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.117193f); + Set2ndOrder(device->Speaker[1].Coeff, 0.353558f, 0.306181f, 0.306192f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.117183f); + Set2ndOrder(device->Speaker[2].Coeff, 0.353543f, 0.306181f, -0.306192f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.117193f); + Set2ndOrder(device->Speaker[3].Coeff, 0.353558f, -0.306192f, -0.306181f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.117183f); break; case DevFmtX51: @@ -386,7 +364,11 @@ ALvoid aluInitPanning(ALCdevice *device) device->Speaker[2].Angle = DEG2RAD( 0.0f); device->Speaker[3].Angle = DEG2RAD( 30.0f); device->Speaker[4].Angle = DEG2RAD( 110.0f); - layoutname = "layout_surround51"; + Set3rdOrder(device->Speaker[0].Coeff, 0.470934f, -0.369630f, 0.349383f, 0.0f, 0.0f, 0.0f, 0.0f, -0.031379f, -0.058143f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.007116f, -0.043968f); + Set3rdOrder(device->Speaker[1].Coeff, 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); + Set3rdOrder(device->Speaker[2].Coeff, 0.109403f, 0.179490f, -0.000002f, 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); + Set3rdOrder(device->Speaker[3].Coeff, 0.208950f, 0.212842f, -0.238350f, 0.0f, 0.0f, 0.0f, 0.0f, -0.017740f, -0.204011f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.051022f, -0.047489f); + Set3rdOrder(device->Speaker[4].Coeff, 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); break; case DevFmtX51Side: @@ -401,7 +383,11 @@ ALvoid aluInitPanning(ALCdevice *device) device->Speaker[2].Angle = DEG2RAD( 0.0f); device->Speaker[3].Angle = DEG2RAD( 30.0f); device->Speaker[4].Angle = DEG2RAD( 90.0f); - layoutname = "layout_side51"; + Set3rdOrder(device->Speaker[0].Coeff, 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); + Set3rdOrder(device->Speaker[1].Coeff, 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); + Set3rdOrder(device->Speaker[2].Coeff, 0.109403f, 0.179490f, -0.000002f, 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); + Set3rdOrder(device->Speaker[3].Coeff, 0.167058f, 0.200580f, -0.172701f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029846f, -0.186405f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068904f); + Set3rdOrder(device->Speaker[4].Coeff, 0.289157f, -0.081298f, -0.401295f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, 0.071419f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f, 0.032897f); break; case DevFmtX61: @@ -418,7 +404,12 @@ ALvoid aluInitPanning(ALCdevice *device) device->Speaker[3].Angle = DEG2RAD( 30.0f); device->Speaker[4].Angle = DEG2RAD( 90.0f); device->Speaker[5].Angle = DEG2RAD(180.0f); - layoutname = "layout_surround61"; + Set3rdOrder(device->Speaker[0].Coeff, 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); + Set3rdOrder(device->Speaker[1].Coeff, 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); + Set3rdOrder(device->Speaker[2].Coeff, 0.109403f, 0.179490f, -0.000002f, 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); + Set3rdOrder(device->Speaker[3].Coeff, 0.167058f, 0.200580f, -0.172701f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029846f, -0.186405f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068904f); + Set3rdOrder(device->Speaker[4].Coeff, 0.289157f, -0.081298f, -0.401295f, 0.0f, 0.0f, 0.0f, 0.0f, -0.188208f, 0.071419f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.010099f, 0.032897f); + Set3rdOrder(device->Speaker[5].Coeff, 0.353556f, -0.461940f, -0.000006f, 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); break; case DevFmtX71: @@ -437,9 +428,13 @@ ALvoid aluInitPanning(ALCdevice *device) device->Speaker[4].Angle = DEG2RAD( 30.0f); device->Speaker[5].Angle = DEG2RAD( 90.0f); device->Speaker[6].Angle = DEG2RAD( 150.0f); - layoutname = "layout_surround71"; + Set3rdOrder(device->Speaker[0].Coeff, 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); + Set3rdOrder(device->Speaker[1].Coeff, 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); + Set3rdOrder(device->Speaker[2].Coeff, 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); + Set3rdOrder(device->Speaker[3].Coeff, 0.109403f, 0.179490f, -0.000002f, 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); + Set3rdOrder(device->Speaker[4].Coeff, 0.167058f, 0.200580f, -0.172701f, 0.0f, 0.0f, 0.0f, 0.0f, 0.029846f, -0.186405f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.039241f, -0.068904f); + Set3rdOrder(device->Speaker[5].Coeff, 0.224754f, 0.000004f, -0.340647f, 0.0f, 0.0f, 0.0f, 0.0f, -0.210697f, -0.000004f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.000000f, 0.065796f); + Set3rdOrder(device->Speaker[6].Coeff, 0.224739f, -0.295005f, -0.170331f, 0.0f, 0.0f, 0.0f, 0.0f, 0.105342f, 0.182470f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, -0.000000f, -0.065792f); break; } - if(layoutname && device->Type != Loopback) - SetSpeakerArrangement(layoutname, device); } |