CWTOscillator::CWTOscillator(void)
{
// --- clear out arrays
memset(m_pSawTables, 0, NUM_TABLES*sizeof(double*));
memset(m_pTriangleTables, 0, NUM_TABLES*sizeof(double*));
// --- init variables
m_dReadIndex = 0.0;
m_dWT_inc = 0.0;
m_nCurrentTableIndex = 0;
// --- setup correction factors (empirical)
m_dSquareCorrFactor[0] = 0.5;
m_dSquareCorrFactor[1] = 0.5;
m_dSquareCorrFactor[2] = 0.5;
m_dSquareCorrFactor[3] = 0.49;
m_dSquareCorrFactor[4] = 0.48;
m_dSquareCorrFactor[5] = 0.468;
m_dSquareCorrFactor[6] = 0.43;
m_dSquareCorrFactor[7] = 0.34;
m_dSquareCorrFactor[8] = 0.25;
// --- default to SINE
m_pCurrentTable = &m_dSineTable[0];
createWaveTables();
}
HowieError onDeviceChanged(
const HowieDeviceCharacteristics * pHDC,
const HowieBuffer *state,
const HowieBuffer *params) {
__android_log_print(ANDROID_LOG_VERBOSE, APPNAME, __func__);
struct PlayerState* playerState = (struct PlayerState*)state->data;
struct PlayerParams* playerParams = (struct PlayerParams*)params->data;
createWaveTables(pHDC->framesPerPeriod, pHDC->channelCount, playerState);
playerParams->playing = 1;
return HOWIE_SUCCESS;
}
void CWTOscillator::setSampleRate(double dFs)
{
bool bNewSR = m_dSampleRate != dFs;
// --- base class first
COscillator::setSampleRate(dFs);
// --- recrate the tables only if sample rate has changed
if(bNewSR)
{
// --- then recrate
destroyWaveTables();
createWaveTables();
}
}
