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Improve the frequency shifter output accum handling

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This commit is contained in:
Chris Robinson 2018-05-22 06:12:55 -07:00
parent ecdc58c1c9
commit 80df89d0db
1 changed files with 8 additions and 9 deletions
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17
Alc/effects/fshifter.c
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@ -50,7 +50,7 @@ typedef struct ALfshifterState {
/*Effects buffers*/
ALfloat InFIFO[HIL_SIZE];
ALcomplex OutFIFO[HIL_SIZE];
ALcomplex OutputAccum[2*HIL_SIZE];
ALcomplex OutputAccum[HIL_SIZE];
ALcomplex Analytic[HIL_SIZE];
ALcomplex Outdata[BUFFERSIZE];
@ -147,8 +147,9 @@ static ALvoid ALfshifterState_update(ALfshifterState *state, const ALCcontext *c
static ALvoid ALfshifterState_process(ALfshifterState *state, ALsizei SamplesToDo, const ALfloat (*restrict SamplesIn)[BUFFERSIZE], ALfloat (*restrict SamplesOut)[BUFFERSIZE], ALsizei NumChannels)
{
static const ALcomplex complex_zero = { 0.0, 0.0 };
ALfloat *restrict BufferOut = state->BufferOut;
ALsizei i, k;
ALsizei i, j, k;
for(i = 0; i < SamplesToDo;i++)
{
@ -180,15 +181,13 @@ static ALvoid ALfshifterState_process(ALfshifterState *state, ALsizei SamplesToD
state->OutputAccum[k].Real += 2.0/OVERSAMP*HannWindow[k]*state->Analytic[k].Real;
state->OutputAccum[k].Imag += 2.0/OVERSAMP*HannWindow[k]*state->Analytic[k].Imag;
}
for(k = 0;k < HIL_STEP;k++)
state->OutFIFO[k] = state->OutputAccum[k];
/* Shift accumulator */
memmove(state->OutputAccum, state->OutputAccum+HIL_STEP, HIL_SIZE*sizeof(ALcomplex));
/* Move input FIFO */
/* Shift accumulator, input & output FIFO */
for(k = 0;k < HIL_STEP;k++) state->OutFIFO[k] = state->OutputAccum[k];
for(j = 0;k < HIL_SIZE;k++,j++) state->OutputAccum[j] = state->OutputAccum[k];
for(;j < HIL_SIZE;j++) state->OutputAccum[j] = complex_zero;
for(k = 0;k < FIFO_LATENCY;k++)
state->InFIFO[k] = state->InFIFO[k + HIL_STEP];
state->InFIFO[k] = state->InFIFO[k+HIL_STEP];
}
}