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Plugin_TeeDee.cpp
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Plugin_TeeDee.cpp
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#include "AudioPluginUtil.h"
namespace TeeDee
{
enum Param
{
P_SEED,
P_BPM,
P_SINE,
P_NOISE,
P_CUT,
P_RES,
P_FREQ,
P_ADECAY,
P_FDECAY,
P_PDECAY,
P_FILTERTYPE,
P_POSTDIST,
P_AENV,
P_FENV,
P_PENV,
P_PREDIST,
P_INPUTMIX,
P_NUMSTEPS,
P_NUM
};
struct EffectData
{
struct Data
{
int pattern[64];
float phase;
float aenv;
float fenv;
float penv;
float lpf;
float bpf;
float wetmix;
float p[P_NUM];
int pattern_index;
Random random;
};
union
{
Data data;
unsigned char pad[(sizeof(Data) + 15) & ~15]; // This entire structure must be a multiple of 16 bytes (and and instance 16 byte aligned) for PS3 SPU DMA requirements
};
};
int InternalRegisterEffectDefinition(UnityAudioEffectDefinition& definition)
{
int numparams = P_NUM;
definition.paramdefs = new UnityAudioParameterDefinition[numparams];
RegisterParameter(definition, "Seed", "", 0.0f, 100.0f, 0.0f, 1.0f, 1.0f, P_SEED, "Random seed of the pattern played. The first 5 patterns are pre-defined typical rhythm patterns.");
RegisterParameter(definition, "BPM", "BPM", 10.0f, 300.0f, 120.0f, 1.0f, 1.0f, P_BPM, "Tempo of the played pattern in beats per minute.");
RegisterParameter(definition, "Sine", "%", 0.0f, 1.0f, 1.0f, 100.0f, 1.0f, P_SINE, "Amount of sine oscillator.");
RegisterParameter(definition, "Noise", "%", 0.0f, 1.0f, 0.0f, 100.0f, 1.0f, P_NOISE, "Amount of noise generator.");
RegisterParameter(definition, "Cutoff", "Hz", 0.0f, kMaxSampleRate, 1000.0f, 1.0f, 3.0f, P_CUT, "Base cutoff frequency of resonant lowpass/highpass filter");
RegisterParameter(definition, "Resonance", "%", 0.0f, 1.0f, 0.2f, 100.0f, 3.0f, P_RES, "Resonance amount of filter.");
RegisterParameter(definition, "Freq", "Hz", 0.0f, 1000.0f, 200.0f, 1.0f, 3.0f, P_FREQ, "Base frequency of sine oscillator.");
RegisterParameter(definition, "AmpDecay", "s", 0.0f, 5.0f, 0.5f, 1.0f, 3.0f, P_ADECAY, "Amplitude decay time in seconds.");
RegisterParameter(definition, "FilterDecay", "s", 0.0f, 5.0f, 0.5f, 1.0f, 3.0f, P_FDECAY, "Frequency decay time in seconds.");
RegisterParameter(definition, "PitchDecay", "s", 0.0f, 5.0f, 0.5f, 1.0f, 3.0f, P_PDECAY, "Pitch decay time in seconds.");
RegisterParameter(definition, "FilterType", "%", 0.0f, 1.0f, 0.0f, 100.0f, 1.0f, P_FILTERTYPE, "Mix ratio between lowpass and highpass filters.");
RegisterParameter(definition, "Distortion", "%", 0.0f, 100.0f, 3.0f, 100.0f, 1.0f, P_POSTDIST, "Amount of distortion applied after the resonant filter.");
RegisterParameter(definition, "AmpEnv", "%", 0.0f, 1.0f, 1.0f, 100.0f, 1.0f, P_AENV, "Amplitude envelope amount.");
RegisterParameter(definition, "FilterEnv", "%", 0.0f, kMaxSampleRate, 5000.0f, 1.0f, 3.0f, P_FENV, "Frequency envelope amount.");
RegisterParameter(definition, "PitchEnv", "%", 0.0f, 1000.0f, 0.0f, 100.0f, 1.0f, P_PENV, "Pitch envelope amount.");
RegisterParameter(definition, "PreDist", "%", 0.0f, 100.0f, 1.0f, 100.0f, 1.0f, P_PREDIST, "Distortion applied before the resonant filter.");
RegisterParameter(definition, "InputMix", "%", 0.0f, 100.0f, 100.0f, 1.0f, 1.0f, P_INPUTMIX, "Amount of input signals mixed to the output of the synthesizer.");
RegisterParameter(definition, "NumSteps", "", 1.0f, 64.0f, 16.0f, 1.0f, 1.0f, P_NUMSTEPS, "Number of steps in the played pattern.");
return numparams;
}
static void CalcPattern(EffectData::Data* data)
{
int seed = (int)data->p[P_SEED];
Random random;
random.Seed((unsigned long)(seed * 1000));
for (int i = 0; i < 64; i++)
{
switch (seed)
{
case 0: data->pattern[i] = ((i & 3) == 0) ? 1 : 0; break;
case 1: data->pattern[i] = ((i & 7) == 4) ? 1 : 0; break;
case 2: data->pattern[i] = ((i & 7) < 2) ? 1 : 0; break;
case 3: data->pattern[i] = ((i & 7) == 12) ? 1 : 0; break;
case 4: data->pattern[i] = 1; break;
default: data->pattern[i] = random.Get() & 1;
}
}
}
UNITY_AUDIODSP_RESULT UNITY_AUDIODSP_CALLBACK CreateCallback(UnityAudioEffectState* state)
{
EffectData* effectdata = new EffectData;
memset(effectdata, 0, sizeof(EffectData));
state->effectdata = effectdata;
InitParametersFromDefinitions(InternalRegisterEffectDefinition, effectdata->data.p);
CalcPattern(&effectdata->data);
return UNITY_AUDIODSP_OK;
}
UNITY_AUDIODSP_RESULT UNITY_AUDIODSP_CALLBACK ReleaseCallback(UnityAudioEffectState* state)
{
EffectData::Data* data = &state->GetEffectData<EffectData>()->data;
delete data;
return UNITY_AUDIODSP_OK;
}
UNITY_AUDIODSP_RESULT UNITY_AUDIODSP_CALLBACK SetFloatParameterCallback(UnityAudioEffectState* state, int index, float value)
{
EffectData::Data* data = &state->GetEffectData<EffectData>()->data;
if (index >= P_NUM)
return UNITY_AUDIODSP_ERR_UNSUPPORTED;
data->p[index] = value;
if (index == P_SEED)
CalcPattern(data);
return UNITY_AUDIODSP_OK;
}
UNITY_AUDIODSP_RESULT UNITY_AUDIODSP_CALLBACK GetFloatParameterCallback(UnityAudioEffectState* state, int index, float* value, char *valuestr)
{
EffectData::Data* data = &state->GetEffectData<EffectData>()->data;
if (index >= P_NUM)
return UNITY_AUDIODSP_ERR_UNSUPPORTED;
if (value != NULL)
*value = data->p[index];
if (valuestr != NULL)
valuestr[0] = 0;
return UNITY_AUDIODSP_OK;
}
int UNITY_AUDIODSP_CALLBACK GetFloatBufferCallback(UnityAudioEffectState* state, const char* name, float* buffer, int numsamples)
{
return UNITY_AUDIODSP_OK;
}
UNITY_AUDIODSP_RESULT UNITY_AUDIODSP_CALLBACK ProcessCallback(UnityAudioEffectState* state, float* inbuffer, float* outbuffer, unsigned int length, int inchannels, int outchannels)
{
EffectData::Data* data = &state->GetEffectData<EffectData>()->data;
float sr = (float)state->samplerate;
float st = 1.0f / sr;
float sr_half = sr * 0.5f;
float adecay = (data->p[P_ADECAY] == 0) ? 1.0f : powf(0.01f, 1.0f / (sr * data->p[P_ADECAY]));
float fdecay = (data->p[P_FDECAY] == 0) ? 1.0f : powf(0.01f, 1.0f / (sr * data->p[P_FDECAY]));
float pdecay = (data->p[P_PDECAY] == 0) ? 1.0f : powf(0.01f, 1.0f / (sr * data->p[P_PDECAY]));
float wetTarget = ((state->flags & UnityAudioEffectStateFlags_IsPlaying) && !(state->flags & (UnityAudioEffectStateFlags_IsMuted | UnityAudioEffectStateFlags_IsPaused))) ? 1.0f : 0.0f;
float inputmix = data->p[P_INPUTMIX] * 0.01f;
UInt64 pattern_length = (UInt64)(sr * 0.25f * 60.0f / data->p[P_BPM]);
for (unsigned int n = 0; n < length; n++)
{
if (((state->currdsptick + n) % pattern_length) == 0)
{
data->pattern_index = ((state->currdsptick + n) / pattern_length) % (int)data->p[P_NUMSTEPS];
if (data->pattern[data->pattern_index])
{
data->aenv = data->p[P_AENV];
data->fenv = data->p[P_FENV];
data->penv = data->p[P_PENV];
}
}
data->phase += (data->p[P_FREQ] + data->penv) * st;
data->phase -= FastFloor(data->phase);
data->aenv = data->aenv * adecay + 1.0e-11f;
data->fenv = data->fenv * fdecay + 1.0e-11f;
data->penv = data->penv * pdecay + 1.0e-11f;
float outval = sinf(data->phase * 2.0f * kPI) * data->p[P_SINE] + data->random.GetFloat(-1.0f, 1.0f) * data->p[P_NOISE];
outval = atanf(outval * data->p[P_PREDIST]) * (1.0f / kPI) * data->aenv;
float cut = data->p[P_CUT] + data->fenv;
if (cut < 0.0f)
cut = 0.0f;
else if (cut > sr_half)
cut = sr_half;
cut = 2.0f * sinf(0.5f * kPI * cut * st);
if (cut > 1.4f)
cut = 1.4f;
float bw = 1.0f - data->p[P_RES]; bw *= bw;
data->lpf += cut * data->bpf;
float hpf = outval - data->lpf - data->bpf * bw;
data->bpf += cut * hpf;
data->wetmix += (wetTarget - data->wetmix) * 0.05f + 1.0e-9f;
outval = data->lpf + (hpf - data->lpf) * data->p[P_FILTERTYPE];
outval = atanf(outval * data->p[P_POSTDIST]) * (1.0f / kPI) * data->aenv;
for (int i = 0; i < outchannels; i++)
{
float inval = inbuffer[n * inchannels + i];
outbuffer[n * outchannels + i] = inval + (outval + inval * inputmix - inval) * data->wetmix;
}
}
return UNITY_AUDIODSP_OK;
}
}