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-rw-r--r--OpenAL32/Include/alMain.h1
-rw-r--r--OpenAL32/Include/alSource.h2
-rw-r--r--OpenAL32/alSource.c14
3 files changed, 17 insertions, 0 deletions
diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index 8ffda560..5a221065 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -98,6 +98,7 @@ extern char szDebug[256];
//#define OUTPUT_BUFFER_SIZE (32768*SWMIXER_OUTPUT_RATE/22050)
#define SPEEDOFSOUNDMETRESPERSEC (343.3f)
+#define AIRABSORBGAINHF (0.994f)
typedef struct {
ALCboolean (*OpenPlayback)(ALCdevice*, const ALCchar*);
diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index 4493c006..38b0094d 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -68,6 +68,8 @@ typedef struct ALsource_struct
ALboolean DryGainHFAuto;
ALfloat OuterGainHF;
+ ALfloat AirAbsorptionFactor;
+
// Index to itself
ALuint source;
diff --git a/OpenAL32/alSource.c b/OpenAL32/alSource.c
index 1e30b1db..65bfcb22 100644
--- a/OpenAL32/alSource.c
+++ b/OpenAL32/alSource.c
@@ -348,6 +348,13 @@ ALAPI ALvoid ALAPIENTRY alSourcef(ALuint source, ALenum eParam, ALfloat flValue)
alSetError(AL_INVALID_VALUE);
break;
+ case AL_AIR_ABSORPTION_FACTOR:
+ if (flValue >= 0.0f && flValue <= 10.0f)
+ pSource->AirAbsorptionFactor = flValue;
+ else
+ alSetError(AL_INVALID_VALUE);
+ break;
+
case AL_SEC_OFFSET:
case AL_SAMPLE_OFFSET:
case AL_BYTE_OFFSET:
@@ -472,6 +479,7 @@ ALAPI ALvoid ALAPIENTRY alSourcefv(ALuint source, ALenum eParam, const ALfloat *
case AL_SEC_OFFSET:
case AL_SAMPLE_OFFSET:
case AL_BYTE_OFFSET:
+ case AL_AIR_ABSORPTION_FACTOR:
alSourcef(source, eParam, pflValues[0]);
break;
@@ -850,6 +858,10 @@ ALAPI ALvoid ALAPIENTRY alGetSourcef(ALuint source, ALenum eParam, ALfloat *pflV
*pflValue = pSource->flRefDistance;
break;
+ case AL_AIR_ABSORPTION_FACTOR:
+ *pflValue = pSource->AirAbsorptionFactor;
+ break;
+
default:
alSetError(AL_INVALID_ENUM);
break;
@@ -958,6 +970,7 @@ ALAPI ALvoid ALAPIENTRY alGetSourcefv(ALuint source, ALenum eParam, ALfloat *pfl
case AL_CONE_OUTER_ANGLE:
case AL_REFERENCE_DISTANCE:
case AL_CONE_OUTER_GAINHF:
+ case AL_AIR_ABSORPTION_FACTOR:
alGetSourcef(source, eParam, pflValues);
break;
@@ -1879,6 +1892,7 @@ static ALvoid InitSourceParams(ALsource *pSource)
pSource->flOuterGain = 0.0f;
pSource->DryGainHFAuto = AL_TRUE;
+ pSource->AirAbsorptionFactor = 0.0f;
pSource->state = AL_INITIAL;
pSource->lSourceType = AL_UNDETERMINED;