Include the limiter's lookAhead delay in the device latency

4 files changed, 22 insertions, 6 deletions

diff --git a/Alc/ALc.c b/Alc/ALc.c
index a65a56b6..70663780 100644
--- a/Alc/ALc.c
+++ b/Alc/ALc.c
@@ -2051,6 +2051,7 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
     device->RealOut.NumChannels = 0;
 
     UpdateClockBase(device);
+    device->FixedLatency = 0;
 
     device->DitherSeed = DITHER_RNG_SEED;
 
@@ -2253,6 +2254,8 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
 
         al_free(device->Limiter);
         device->Limiter = CreateDeviceLimiter(device, log10f(thrshld) * 20.0f);
+        device->FixedLatency += (ALuint)(device->Limiter->LookAhead * DEVICE_CLOCK_RES /
+                                         device->Frequency);
     }
     else
     {
@@ -2263,6 +2266,8 @@ static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
 
     aluSelectPostProcess(device);
 
+    TRACE("Fixed device latency: %uns\n", device->FixedLatency);
+
     /* Need to delay returning failure until replacement Send arrays have been
      * allocated with the appropriate size.
      */
@@ -2422,6 +2427,7 @@ static void InitDevice(ALCdevice *device, enum DeviceType type)
 
     device->ClockBase = 0;
     device->SamplesDone = 0;
+    device->FixedLatency = 0;
 
     device->SourcesMax = 0;
     device->AuxiliaryEffectSlotMax = 0;
@@ -3637,7 +3643,7 @@ ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname,
                     values[i++] = ALC_OUTPUT_LIMITER_SOFT;
                     values[i++] = device->Limiter ? ALC_TRUE : ALC_FALSE;
 
-                    clock = V0(device->Backend,getClockLatency)();
+                    clock = GetClockLatency(device);
                     values[i++] = ALC_DEVICE_CLOCK_SOFT;
                     values[i++] = clock.ClockTime;
 
@@ -3663,7 +3669,7 @@ ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname,
 
             case ALC_DEVICE_LATENCY_SOFT:
                 almtx_lock(&device->BackendLock);
-                clock = V0(device->Backend,getClockLatency)();
+                clock = GetClockLatency(device);
                 almtx_unlock(&device->BackendLock);
                 *values = clock.Latency;
                 break;
@@ -3674,7 +3680,7 @@ ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname,
                 else
                 {
                     almtx_lock(&device->BackendLock);
-                    clock = V0(device->Backend,getClockLatency)();
+                    clock = GetClockLatency(device);
                     almtx_unlock(&device->BackendLock);
                     values[0] = clock.ClockTime;
                     values[1] = clock.Latency;
diff --git a/Alc/backends/base.c b/Alc/backends/base.c
index a451fee9..9d8614b1 100644
--- a/Alc/backends/base.c
+++ b/Alc/backends/base.c
@@ -12,6 +12,7 @@
 extern inline ALuint64 GetDeviceClockTime(ALCdevice *device);
 extern inline void ALCdevice_Lock(ALCdevice *device);
 extern inline void ALCdevice_Unlock(ALCdevice *device);
+extern inline ClockLatency GetClockLatency(ALCdevice *device);
 
 /* Base ALCbackend method implementations. */
 void ALCbackend_Construct(ALCbackend *self, ALCdevice *device)
diff --git a/Alc/backends/base.h b/Alc/backends/base.h
index 0de4e590..03db56e9 100644
--- a/Alc/backends/base.h
+++ b/Alc/backends/base.h
@@ -162,6 +162,15 @@ inline void ALCdevice_Lock(ALCdevice *device)
 inline void ALCdevice_Unlock(ALCdevice *device)
 { V0(device->Backend,unlock)(); }
 
+
+inline ClockLatency GetClockLatency(ALCdevice *device)
+{
+    ClockLatency ret = V0(device->Backend,getClockLatency)();
+    ret.Latency += device->FixedLatency;
+    return ret;
+}
+
+
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
diff --git a/Alc/mastering.c b/Alc/mastering.c
index 78f6038d..a957066a 100644
--- a/Alc/mastering.c
+++ b/Alc/mastering.c
@@ -344,10 +344,10 @@ Compressor* CompressorInit(const ALuint NumChans, const ALuint SampleRate,
     ALsizei hold;
     size_t size;
 
-    lookAhead = (ALsizei)minf(BUFFERSIZE, roundf(maxf(0.0f, LookAheadTime) * SampleRate));
-    hold = (ALsizei)minf(BUFFERSIZE, roundf(maxf(0.0f, HoldTime) * SampleRate));
-    size = sizeof(*Comp);
+    lookAhead = (ALsizei)clampf(roundf(LookAheadTime*SampleRate), 0.0f, BUFFERSIZE);
+    hold = (ALsizei)clampf(roundf(HoldTime*SampleRate), 0.0f, BUFFERSIZE);
 
+    size = sizeof(*Comp);
     if(lookAhead > 0)
     {
         size += sizeof(*Comp->Delay) * NumChans;