void process(AUAudioFrameCount frameCount, AUAudioFrameCount bufferOffset) override {
for (int frameIndex = 0; frameIndex < frameCount; ++frameIndex) {
int frameOffset = int(frameIndex + bufferOffset);
bitDepth = bitDepthRamper.getAndStep();
bitcrush0->bitdepth = (float)bitDepth;
bitcrush1->bitdepth = (float)bitDepth;
sampleRate = sampleRateRamper.getAndStep();
bitcrush0->srate = (float)sampleRate;
bitcrush1->srate = (float)sampleRate;
for (int channel = 0; channel < channels; ++channel) {
float *in = (float *)inBufferListPtr->mBuffers[channel].mData + frameOffset;
float *out = (float *)outBufferListPtr->mBuffers[channel].mData + frameOffset;
if (started) {
if (channel == 0) {
sp_bitcrush_compute(sp, bitcrush0, in, out);
} else {
sp_bitcrush_compute(sp, bitcrush1, in, out);
}
} else {
*out = *in;
}
}
}
}
void process(AUAudioFrameCount frameCount, AUAudioFrameCount bufferOffset) override {
// For each sample.
for (int frameIndex = 0; frameIndex < frameCount; ++frameIndex) {
double bitDepth = double(bitDepthRamper.getStep());
double sampleRate = double(sampleRateRamper.getStep());
int frameOffset = int(frameIndex + bufferOffset);
bitcrush->bitdepth = (float)bitDepth;
bitcrush->srate = (float)sampleRate;
if (!started) {
outBufferListPtr->mBuffers[0] = inBufferListPtr->mBuffers[0];
outBufferListPtr->mBuffers[1] = inBufferListPtr->mBuffers[1];
return;
}
for (int channel = 0; channel < channels; ++channel) {
float *in = (float *)inBufferListPtr->mBuffers[channel].mData + frameOffset;
float *out = (float *)outBufferListPtr->mBuffers[channel].mData + frameOffset;
sp_bitcrush_compute(sp, bitcrush, in, out);
}
}
}
int sporth_bitcrush(sporth_stack *stack, void *ud)
{
plumber_data *pd = ud;
SPFLOAT input;
SPFLOAT out;
SPFLOAT bitdepth;
SPFLOAT srate;
sp_bitcrush *bitcrush;
switch(pd->mode) {
case PLUMBER_CREATE:
#ifdef DEBUG_MODE
fprintf(stderr, "bitcrush: Creating\n");
#endif
sp_bitcrush_create(&bitcrush);
plumber_add_module(pd, SPORTH_BITCRUSH, sizeof(sp_bitcrush), bitcrush);
break;
case PLUMBER_INIT:
#ifdef DEBUG_MODE
fprintf(stderr, "bitcrush: Initialising\n");
#endif
if(sporth_check_args(stack, "ff") != SPORTH_OK) {
fprintf(stderr,"Not enough arguments for bitcrush\n");
stack->error++;
return PLUMBER_NOTOK;
}
srate = sporth_stack_pop_float(stack);
bitdepth = sporth_stack_pop_float(stack);
input = sporth_stack_pop_float(stack);
bitcrush = pd->last->ud;
sp_bitcrush_init(pd->sp, bitcrush);
sporth_stack_push_float(stack, 0);
break;
case PLUMBER_COMPUTE:
if(sporth_check_args(stack, "ff") != SPORTH_OK) {
fprintf(stderr,"Not enough arguments for bitcrush\n");
stack->error++;
return PLUMBER_NOTOK;
}
srate = sporth_stack_pop_float(stack);
bitdepth = sporth_stack_pop_float(stack);
input = sporth_stack_pop_float(stack);
bitcrush = pd->last->ud;
bitcrush->bitdepth = bitdepth;
bitcrush->srate = srate;
sp_bitcrush_compute(pd->sp, bitcrush, &input, &out);
sporth_stack_push_float(stack, out);
break;
case PLUMBER_DESTROY:
bitcrush = pd->last->ud;
sp_bitcrush_destroy(&bitcrush);
break;
default:
fprintf(stderr, "bitcrush: Uknown mode!\n");
break;
}
return PLUMBER_OK;
}
