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-rw-r--r--Alc/ALu.c103
1 files changed, 69 insertions, 34 deletions
diff --git a/Alc/ALu.c b/Alc/ALu.c
index 82553cc7..3b873aa5 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -330,6 +330,55 @@ static ALboolean CalcListenerParams(ALCcontext *Context)
return AL_TRUE;
}
+static ALboolean CalcEffectSlotParams(ALeffectslot *slot, ALCdevice *device)
+{
+ struct ALeffectslotProps *first;
+ struct ALeffectslotProps *props;
+
+ props = ATOMIC_EXCHANGE(struct ALeffectslotProps*, &slot->Update, NULL, almemory_order_acq_rel);
+ if(!props) return AL_FALSE;
+
+ slot->Params.Gain = ATOMIC_LOAD(&props->Gain, almemory_order_relaxed);
+ slot->Params.AuxSendAuto = ATOMIC_LOAD(&props->AuxSendAuto, almemory_order_relaxed);
+ slot->Params.EffectType = ATOMIC_LOAD(&props->Type, almemory_order_relaxed);
+ memcpy(&slot->Params.EffectProps, &props->Props, sizeof(props->Props));
+ /* If the existing state object is different from the one being set,
+ * exchange it so it remains in the freelist and isn't leaked.
+ */
+ if(slot->Params.EffectState == ATOMIC_LOAD(&props->State, almemory_order_relaxed))
+ slot->Params.EffectState = NULL;
+ slot->Params.EffectState = ATOMIC_EXCHANGE(ALeffectState*,
+ &props->State, slot->Params.EffectState, almemory_order_relaxed
+ );
+ if(IsReverbEffect(slot->Params.EffectType))
+ {
+ slot->Params.RoomRolloff = slot->Params.EffectProps.Reverb.RoomRolloffFactor;
+ slot->Params.DecayTime = slot->Params.EffectProps.Reverb.DecayTime;
+ slot->Params.AirAbsorptionGainHF = slot->Params.EffectProps.Reverb.AirAbsorptionGainHF;
+ }
+ else
+ {
+ slot->Params.RoomRolloff = 0.0f;
+ slot->Params.DecayTime = 0.0f;
+ slot->Params.AirAbsorptionGainHF = 1.0f;
+ }
+
+ V(slot->Params.EffectState,update)(device, slot);
+
+ /* WARNING: A livelock is theoretically possible if another thread keeps
+ * changing the freelist head without giving this a chance to actually swap
+ * in the old container (practically impossible with this little code,
+ * but...).
+ */
+ first = ATOMIC_LOAD(&slot->FreeList);
+ do {
+ ATOMIC_STORE(&props->next, first, almemory_order_relaxed);
+ } while(ATOMIC_COMPARE_EXCHANGE_WEAK(struct ALeffectslotProps*,
+ &slot->FreeList, &first, props) == 0);
+
+ return AL_TRUE;
+}
+
ALvoid CalcNonAttnSourceParams(ALvoice *voice, const ALsource *ALSource, const ALbuffer *ALBuffer, const ALCcontext *ALContext)
{
static const struct ChanMap MonoMap[1] = {
@@ -415,7 +464,7 @@ ALvoid CalcNonAttnSourceParams(ALvoice *voice, const ALsource *ALSource, const A
SendSlots[i] = ALSource->Send[i].Slot;
if(!SendSlots[i] && i == 0)
SendSlots[i] = Device->DefaultSlot;
- if(!SendSlots[i] || SendSlots[i]->EffectType == AL_EFFECT_NULL)
+ if(!SendSlots[i] || SendSlots[i]->Params.EffectType == AL_EFFECT_NULL)
{
SendSlots[i] = NULL;
voice->Send[i].OutBuffer = NULL;
@@ -847,7 +896,7 @@ ALvoid CalcSourceParams(ALvoice *voice, const ALsource *ALSource, const ALbuffer
if(!SendSlots[i] && i == 0)
SendSlots[i] = Device->DefaultSlot;
- if(!SendSlots[i] || SendSlots[i]->EffectType == AL_EFFECT_NULL)
+ if(!SendSlots[i] || SendSlots[i]->Params.EffectType == AL_EFFECT_NULL)
{
SendSlots[i] = NULL;
RoomRolloff[i] = 0.0f;
@@ -856,19 +905,10 @@ ALvoid CalcSourceParams(ALvoice *voice, const ALsource *ALSource, const ALbuffer
}
else if(SendSlots[i]->AuxSendAuto)
{
- RoomRolloff[i] = RoomRolloffBase;
- if(IsReverbEffect(SendSlots[i]->EffectType))
- {
- RoomRolloff[i] += SendSlots[i]->EffectProps.Reverb.RoomRolloffFactor;
- DecayDistance[i] = SendSlots[i]->EffectProps.Reverb.DecayTime *
- SPEEDOFSOUNDMETRESPERSEC;
- RoomAirAbsorption[i] = SendSlots[i]->EffectProps.Reverb.AirAbsorptionGainHF;
- }
- else
- {
- DecayDistance[i] = 0.0f;
- RoomAirAbsorption[i] = 1.0f;
- }
+ RoomRolloff[i] = SendSlots[i]->Params.RoomRolloff + RoomRolloffBase;
+ DecayDistance[i] = SendSlots[i]->Params.DecayTime *
+ SPEEDOFSOUNDMETRESPERSEC;
+ RoomAirAbsorption[i] = SendSlots[i]->Params.AirAbsorptionGainHF;
}
else
{
@@ -1245,9 +1285,18 @@ ALvoid CalcSourceParams(ALvoice *voice, const ALsource *ALSource, const ALbuffer
void UpdateContextSources(ALCcontext *ctx)
{
ALvoice *voice, *voice_end;
+ ALboolean fullupdate;
ALsource *source;
- if(CalcListenerParams(ctx))
+ fullupdate = CalcListenerParams(ctx);
+#define UPDATE_SLOT(iter) do { \
+ if(CalcEffectSlotParams(*iter, ctx->Device)) \
+ fullupdate = AL_TRUE; \
+} while(0)
+ VECTOR_FOR_EACH(ALeffectslot*, ctx->ActiveAuxSlots, UPDATE_SLOT);
+#undef UPDATE_SLOT
+
+ if(fullupdate)
{
voice = ctx->Voices;
voice_end = voice + ctx->VoiceCount;
@@ -1388,8 +1437,7 @@ ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size)
if((slot=device->DefaultSlot) != NULL)
{
- if(ATOMIC_EXCHANGE(ALenum, &slot->NeedsUpdate, AL_FALSE))
- V(slot->EffectState,update)(device, slot);
+ CalcEffectSlotParams(device->DefaultSlot, device);
for(i = 0;i < slot->NumChannels;i++)
memset(slot->WetBuffer[i], 0, SamplesToDo*sizeof(ALfloat));
}
@@ -1398,26 +1446,13 @@ ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size)
while(ctx)
{
if(!ctx->DeferUpdates)
- {
UpdateContextSources(ctx);
-#define UPDATE_SLOT(iter) do { \
- if(ATOMIC_EXCHANGE(ALenum, &(*iter)->NeedsUpdate, AL_FALSE)) \
- V((*iter)->EffectState,update)(device, *iter); \
- for(i = 0;i < (*iter)->NumChannels;i++) \
- memset((*iter)->WetBuffer[i], 0, SamplesToDo*sizeof(ALfloat)); \
-} while(0)
- VECTOR_FOR_EACH(ALeffectslot*, ctx->ActiveAuxSlots, UPDATE_SLOT);
-#undef UPDATE_SLOT
- }
- else
- {
#define CLEAR_WET_BUFFER(iter) do { \
for(i = 0;i < (*iter)->NumChannels;i++) \
memset((*iter)->WetBuffer[i], 0, SamplesToDo*sizeof(ALfloat)); \
} while(0)
- VECTOR_FOR_EACH(ALeffectslot*, ctx->ActiveAuxSlots, CLEAR_WET_BUFFER);
+ VECTOR_FOR_EACH(ALeffectslot*, ctx->ActiveAuxSlots, CLEAR_WET_BUFFER);
#undef CLEAR_WET_BUFFER
- }
/* source processing */
voice = ctx->Voices;
@@ -1434,7 +1469,7 @@ ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size)
for(i = 0;i < c;i++)
{
const ALeffectslot *slot = VECTOR_ELEM(ctx->ActiveAuxSlots, i);
- ALeffectState *state = slot->EffectState;
+ ALeffectState *state = slot->Params.EffectState;
V(state,process)(SamplesToDo, slot->WetBuffer, state->OutBuffer,
state->OutChannels);
}
@@ -1445,7 +1480,7 @@ ALvoid aluMixData(ALCdevice *device, ALvoid *buffer, ALsizei size)
if(device->DefaultSlot != NULL)
{
const ALeffectslot *slot = device->DefaultSlot;
- ALeffectState *state = slot->EffectState;
+ ALeffectState *state = slot->Params.EffectState;
V(state,process)(SamplesToDo, slot->WetBuffer, state->OutBuffer,
state->OutChannels);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-29 21:38:21 +0000