From c56b2734fd520a5002dcd1538f04500171a173c4 Mon Sep 17 00:00:00 2001 From: Chris Robinson Date: Wed, 2 Nov 2011 08:15:10 -0700 Subject: Use loops to write reverb output --- Alc/alcReverb.c | 44 +++++++------------------------------------- 1 file changed, 7 insertions(+), 37 deletions(-) (limited to 'Alc') diff --git a/Alc/alcReverb.c b/Alc/alcReverb.c index f194d7ab..caeec18b 100644 --- a/Alc/alcReverb.c +++ b/Alc/alcReverb.c @@ -549,7 +549,7 @@ static __inline ALvoid EAXVerbPass(ALverbState *State, ALfloat in, ALfloat *earl static ALvoid VerbProcess(ALeffectState *effect, ALuint SamplesToDo, const ALfloat *SamplesIn, ALfloat (*SamplesOut)[MAXCHANNELS]) { ALverbState *State = (ALverbState*)effect; - ALuint index; + ALuint index, c; ALfloat early[4], late[4], out[4]; const ALfloat *panGain = State->Gain; @@ -565,14 +565,8 @@ static ALvoid VerbProcess(ALeffectState *effect, ALuint SamplesToDo, const ALflo out[3] = (early[3] + late[3]); // Output the results. - SamplesOut[index][FRONT_LEFT] += panGain[FRONT_LEFT] * out[0]; - SamplesOut[index][FRONT_RIGHT] += panGain[FRONT_RIGHT] * out[1]; - SamplesOut[index][FRONT_CENTER] += panGain[FRONT_CENTER] * out[3]; - SamplesOut[index][SIDE_LEFT] += panGain[SIDE_LEFT] * out[0]; - SamplesOut[index][SIDE_RIGHT] += panGain[SIDE_RIGHT] * out[1]; - SamplesOut[index][BACK_LEFT] += panGain[BACK_LEFT] * out[0]; - SamplesOut[index][BACK_RIGHT] += panGain[BACK_RIGHT] * out[1]; - SamplesOut[index][BACK_CENTER] += panGain[BACK_CENTER] * out[2]; + for(c = 0;c < MAXCHANNELS;c++) + SamplesOut[index][c] += panGain[c] * out[c&3]; } } @@ -581,7 +575,7 @@ static ALvoid VerbProcess(ALeffectState *effect, ALuint SamplesToDo, const ALflo static ALvoid EAXVerbProcess(ALeffectState *effect, ALuint SamplesToDo, const ALfloat *SamplesIn, ALfloat (*SamplesOut)[MAXCHANNELS]) { ALverbState *State = (ALverbState*)effect; - ALuint index; + ALuint index, c; ALfloat early[4], late[4]; for(index = 0;index < SamplesToDo;index++) @@ -589,33 +583,9 @@ static ALvoid EAXVerbProcess(ALeffectState *effect, ALuint SamplesToDo, const AL // Process reverb for this sample. EAXVerbPass(State, SamplesIn[index], early, late); - // Unfortunately, while the number and configuration of gains for - // panning adjust according to MAXCHANNELS, the output from the - // reverb engine is not so scalable. - SamplesOut[index][FRONT_LEFT] += - (State->Early.PanGain[FRONT_LEFT]*early[0] + - State->Late.PanGain[FRONT_LEFT]*late[0]); - SamplesOut[index][FRONT_RIGHT] += - (State->Early.PanGain[FRONT_RIGHT]*early[1] + - State->Late.PanGain[FRONT_RIGHT]*late[1]); - SamplesOut[index][FRONT_CENTER] += - (State->Early.PanGain[FRONT_CENTER]*early[3] + - State->Late.PanGain[FRONT_CENTER]*late[3]); - SamplesOut[index][SIDE_LEFT] += - (State->Early.PanGain[SIDE_LEFT]*early[0] + - State->Late.PanGain[SIDE_LEFT]*late[0]); - SamplesOut[index][SIDE_RIGHT] += - (State->Early.PanGain[SIDE_RIGHT]*early[1] + - State->Late.PanGain[SIDE_RIGHT]*late[1]); - SamplesOut[index][BACK_LEFT] += - (State->Early.PanGain[BACK_LEFT]*early[0] + - State->Late.PanGain[BACK_LEFT]*late[0]); - SamplesOut[index][BACK_RIGHT] += - (State->Early.PanGain[BACK_RIGHT]*early[1] + - State->Late.PanGain[BACK_RIGHT]*late[1]); - SamplesOut[index][BACK_CENTER] += - (State->Early.PanGain[BACK_CENTER]*early[2] + - State->Late.PanGain[BACK_CENTER]*late[2]); + for(c = 0;c < MAXCHANNELS;c++) + SamplesOut[index][c] += State->Early.PanGain[c]*early[c&3] + + State->Late.PanGain[c]*late[c&3]; } } -- cgit v1.2.3