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-rw-r--r--Alc/mixer.c126
1 files changed, 53 insertions, 73 deletions
diff --git a/Alc/mixer.c b/Alc/mixer.c
index 2abaa8ce..8aa1a42b 100644
--- a/Alc/mixer.c
+++ b/Alc/mixer.c
@@ -37,11 +37,6 @@
#include "bs2b.h"
-/* Minimum ramp length in milliseconds. The value below was chosen to
- * adequately reduce clicks and pops from harsh gain changes. */
-#define MIN_RAMP_LENGTH 16
-
-
static __inline ALfloat aluF2F(ALfloat Value)
{
return Value;
@@ -94,8 +89,9 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
static float DummyBuffer[BUFFERSIZE];
ALfloat *WetBuffer[MAX_SENDS];
ALfloat DrySend[OUTPUTCHANNELS];
- ALfloat dryGainStep[OUTPUTCHANNELS];
- ALfloat wetGainStep[MAX_SENDS];
+ ALfloat dryGainDiff[OUTPUTCHANNELS];
+ ALfloat wetGainDiff[MAX_SENDS];
+ ALboolean UpdateClick;
ALfloat *ClickRemoval;
ALuint i, j, out;
ALfloat value, outsamp;
@@ -103,8 +99,6 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
ALint64 DataSize64,DataPos64;
FILTER *DryFilter, *WetFilter[MAX_SENDS];
ALfloat WetSend[MAX_SENDS];
- ALuint rampLength;
- ALuint DeviceFreq;
ALint increment;
ALuint DataPosInt, DataPosFrac;
resampler_t Resampler;
@@ -112,10 +106,19 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
ALboolean Looping;
ALenum State;
+ for(i = 0;i < OUTPUTCHANNELS;i++)
+ DrySend[i] = ALSource->Params.DryGains[i];
+ for(i = 0;i < MAX_SENDS;i++)
+ WetSend[i] = ALSource->Params.WetGains[i];
+
+ UpdateClick = (ALSource->FirstStart || ALSource->NeedsUpdate);
+ ClickRemoval = ALContext->Device->ClickRemoval;
+
if(ALSource->NeedsUpdate)
{
ALsource_Update(ALSource, ALContext);
ALSource->NeedsUpdate = AL_FALSE;
+ UpdateClick = AL_TRUE;
}
/* Get source info */
@@ -126,35 +129,17 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
DataPosFrac = ALSource->position_fraction;
Looping = ALSource->bLooping;
- if(ALSource->FirstStart)
+ for(i = 0;i < OUTPUTCHANNELS;i++)
{
- for(i = 0;i < OUTPUTCHANNELS;i++)
- DrySend[i] = ALSource->Params.DryGains[i];
- for(i = 0;i < MAX_SENDS;i++)
- WetSend[i] = ALSource->Params.WetGains[i];
+ dryGainDiff[i] = DrySend[i] - ALSource->Params.DryGains[i];
+ DrySend[i] = ALSource->Params.DryGains[i];
}
- else
+ for(i = 0;i < MAX_SENDS;i++)
{
- for(i = 0;i < OUTPUTCHANNELS;i++)
- DrySend[i] = ALSource->DryGains[i];
- for(i = 0;i < MAX_SENDS;i++)
- WetSend[i] = ALSource->WetGains[i];
+ wetGainDiff[i] = WetSend[i] - ALSource->Params.WetGains[i];
+ WetSend[i] = ALSource->Params.WetGains[i];
}
- ClickRemoval = ALContext->Device->ClickRemoval;
- /* Compute the gain steps for each output channel */
- DeviceFreq = ALContext->Device->Frequency;
-
- rampLength = DeviceFreq * MIN_RAMP_LENGTH / 1000;
- rampLength = max(rampLength, SamplesToDo);
-
- for(i = 0;i < OUTPUTCHANNELS;i++)
- dryGainStep[i] = (ALSource->Params.DryGains[i]-DrySend[i]) /
- rampLength;
- for(i = 0;i < MAX_SENDS;i++)
- wetGainStep[i] = (ALSource->Params.WetGains[i]-WetSend[i]) /
- rampLength;
-
/* Get fixed point step */
increment = ALSource->Params.Step;
@@ -247,27 +232,33 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
if(Channels == 1) /* Mono */
{
#define DO_MIX(resampler) do { \
- if(j == 0 && ALSource->FirstStart) \
+ if(j == 0 && UpdateClick) \
{ \
value = (resampler)(Data[DataPosInt], Data[DataPosInt+1], \
DataPosFrac); \
- outsamp = lpFilter4PC(DryFilter, 0, value) * -1.0f; \
- ClickRemoval[FRONT_LEFT] += outsamp*DrySend[FRONT_LEFT]; \
- ClickRemoval[FRONT_RIGHT] += outsamp*DrySend[FRONT_RIGHT]; \
- ClickRemoval[SIDE_LEFT] += outsamp*DrySend[SIDE_LEFT]; \
- ClickRemoval[SIDE_RIGHT] += outsamp*DrySend[SIDE_RIGHT]; \
- ClickRemoval[BACK_LEFT] += outsamp*DrySend[BACK_LEFT]; \
- ClickRemoval[BACK_RIGHT] += outsamp*DrySend[BACK_RIGHT]; \
- ClickRemoval[FRONT_CENTER] += outsamp*DrySend[FRONT_CENTER]; \
- ClickRemoval[BACK_CENTER] += outsamp*DrySend[BACK_CENTER]; \
+ outsamp = lpFilter4PC(DryFilter, 0, value); \
+ ClickRemoval[FRONT_LEFT] += outsamp*dryGainDiff[FRONT_LEFT]; \
+ ClickRemoval[FRONT_RIGHT] += outsamp*dryGainDiff[FRONT_RIGHT]; \
+ ClickRemoval[SIDE_LEFT] += outsamp*dryGainDiff[SIDE_LEFT]; \
+ ClickRemoval[SIDE_RIGHT] += outsamp*dryGainDiff[SIDE_RIGHT]; \
+ ClickRemoval[BACK_LEFT] += outsamp*dryGainDiff[BACK_LEFT]; \
+ ClickRemoval[BACK_RIGHT] += outsamp*dryGainDiff[BACK_RIGHT]; \
+ ClickRemoval[FRONT_CENTER] += outsamp*dryGainDiff[FRONT_CENTER]; \
+ ClickRemoval[BACK_CENTER] += outsamp*dryGainDiff[BACK_CENTER]; \
+ if(ALSource->FirstStart) \
+ { \
+ ClickRemoval[FRONT_LEFT] += -outsamp*DrySend[FRONT_LEFT]; \
+ ClickRemoval[FRONT_RIGHT] += -outsamp*DrySend[FRONT_RIGHT]; \
+ ClickRemoval[SIDE_LEFT] += -outsamp*DrySend[SIDE_LEFT]; \
+ ClickRemoval[SIDE_RIGHT] += -outsamp*DrySend[SIDE_RIGHT]; \
+ ClickRemoval[BACK_LEFT] += -outsamp*DrySend[BACK_LEFT]; \
+ ClickRemoval[BACK_RIGHT] += -outsamp*DrySend[BACK_RIGHT]; \
+ ClickRemoval[FRONT_CENTER] += -outsamp*DrySend[FRONT_CENTER]; \
+ ClickRemoval[BACK_CENTER] += -outsamp*DrySend[BACK_CENTER]; \
+ } \
} \
while(BufferSize--) \
{ \
- for(i = 0;i < OUTPUTCHANNELS;i++) \
- DrySend[i] += dryGainStep[i]; \
- for(i = 0;i < MAX_SENDS;i++) \
- WetSend[i] += wetGainStep[i]; \
- \
/* First order interpolator */ \
value = (resampler)(Data[DataPosInt], Data[DataPosInt+1], \
DataPosFrac); \
@@ -329,20 +320,21 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
Data[(DataPosInt+1)*Channels + i], \
DataPosFrac); \
\
- outsamp = lpFilter2PC(DryFilter, chans[i]*2, value) * -1.0f; \
- ClickRemoval[chans[i]] += outsamp*DrySend[chans[i]]; \
- ClickRemoval[chans2[i*2+0]] += outsamp*DrySend[chans2[i*2+0]]; \
- ClickRemoval[chans2[i*2+1]] += outsamp*DrySend[chans2[i*2+1]]; \
+ outsamp = lpFilter2PC(DryFilter, chans[i]*2, value); \
+ ClickRemoval[chans[i]] += outsamp*dryGainDiff[chans[i]]; \
+ ClickRemoval[chans2[i*2+0]] += outsamp*dryGainDiff[chans2[i*2+0]];\
+ ClickRemoval[chans2[i*2+1]] += outsamp*dryGainDiff[chans2[i*2+1]];\
+ if(ALSource->FirstStart) \
+ { \
+ ClickRemoval[chans[i]] += -outsamp*DrySend[chans[i]]; \
+ ClickRemoval[chans2[i*2+0]] += -outsamp*DrySend[chans2[i*2+0]];\
+ ClickRemoval[chans2[i*2+1]] += -outsamp*DrySend[chans2[i*2+1]];\
+ } \
} \
} \
const ALfloat scaler = 1.0f/Channels; \
while(BufferSize--) \
{ \
- for(i = 0;i < OUTPUTCHANNELS;i++) \
- DrySend[i] += dryGainStep[i]; \
- for(i = 0;i < MAX_SENDS;i++) \
- WetSend[i] += wetGainStep[i]; \
- \
for(i = 0;i < Channels;i++) \
{ \
value = (resampler)(Data[DataPosInt*Channels + i], \
@@ -398,18 +390,15 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
Data[(DataPosInt+1)*Channels + i], \
DataPosFrac); \
\
- outsamp = lpFilter2PC(DryFilter, chans[i]*2, value) * -1.0f; \
- ClickRemoval[chans[i]] += outsamp*DrySend[chans[i]]; \
+ outsamp = lpFilter2PC(DryFilter, chans[i]*2, value); \
+ ClickRemoval[chans[i]] += outsamp*dryGainDiff[chans[i]]; \
+ if(ALSource->FirstStart) \
+ ClickRemoval[chans[i]] += -outsamp*DrySend[chans[i]]; \
} \
} \
const ALfloat scaler = 1.0f/Channels; \
while(BufferSize--) \
{ \
- for(i = 0;i < OUTPUTCHANNELS;i++) \
- DrySend[i] += dryGainStep[i]; \
- for(i = 0;i < MAX_SENDS;i++) \
- WetSend[i] += wetGainStep[i]; \
- \
for(i = 0;i < Channels;i++) \
{ \
value = (resampler)(Data[DataPosInt*Channels + i], \
@@ -514,10 +503,6 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
}
else /* Unknown? */
{
- for(i = 0;i < OUTPUTCHANNELS;i++)
- DrySend[i] += dryGainStep[i]*BufferSize;
- for(i = 0;i < MAX_SENDS;i++)
- WetSend[i] += wetGainStep[i]*BufferSize;
while(BufferSize--)
{
DataPosFrac += increment;
@@ -564,11 +549,6 @@ static void MixSource(ALsource *ALSource, ALCcontext *ALContext,
ALSource->position_fraction = DataPosFrac;
ALSource->Buffer = BufferListItem->buffer;
- for(i = 0;i < OUTPUTCHANNELS;i++)
- ALSource->DryGains[i] = DrySend[i];
- for(i = 0;i < MAX_SENDS;i++)
- ALSource->WetGains[i] = WetSend[i];
-
ALSource->FirstStart = AL_FALSE;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 19:51:00 +0000