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cwFlowProc.cpp : Fixed various problems with 'sine_tone' proc.

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This commit is contained in:
kevin 2021-12-19 12:13:45 -05:00
parent 6578f69369
commit 5c069612f9
1 changed files with 35 additions and 19 deletions
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54
cwFlowProc.cpp
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@ -507,33 +507,41 @@ namespace cw
typedef struct
{
real_t gain;
real_t hz;
real_t phase;
srate_t srate;
unsigned chCnt;
real_t *phaseA;
} inst_t;
rc_t create( instance_t* ctx )
{
rc_t rc = kOkRC;
inst_t* inst = mem::allocZ<inst_t>();
srate_t srate = 0;
unsigned chCnt = 0;
real_t gain;
real_t hz;
ctx->userPtr = inst;
// Register variables and get their current value
if((rc = var_register_and_get( ctx, kAnyChIdx,
kSratePId, "srate", inst->srate,
kChCntPid, "chCnt", inst->chCnt,
kFreqHzPId, "hz", inst->hz,
kGainPId, "gain", inst->gain)) != kOkRC )
if((rc = var_register_and_get( ctx, kAnyChIdx, kChCntPid, "chCnt", chCnt)) != kOkRC )
{
goto errLabel;
}
// register each oscillator variable
for(unsigned i=0; i<chCnt; ++i)
if((rc = var_register_and_get( ctx, i,
kSratePId, "srate", srate,
kFreqHzPId, "hz", hz,
kGainPId, "gain", gain)) != kOkRC )
{
goto errLabel;
}
// create one output audio buffer
rc = var_register_and_set( ctx, "out", kOutPId, kAnyChIdx, inst->srate, inst->chCnt, ctx->ctx->framesPerCycle );
rc = var_register_and_set( ctx, "out", kOutPId, kAnyChIdx, srate, chCnt, ctx->ctx->framesPerCycle );
inst->phaseA = mem::allocZ<real_t>( chCnt );
errLabel:
return rc;
@ -562,7 +570,6 @@ namespace cw
inst_t* inst = (inst_t*)ctx->userPtr;
abuf_t* abuf = nullptr;
// get the output signal buffer
if((rc = var_get(ctx,kOutPId,kAnyChIdx,abuf)) != kOkRC )
{
@ -570,14 +577,23 @@ namespace cw
}
else
{
for(unsigned i=0; i<inst->chCnt; ++i)
for(unsigned i=0; i<abuf->chN; ++i)
{
sample_t* v = abuf->buf + (i*abuf->frameN);
for(unsigned j=0; j<abuf->frameN; ++j)
v[j] = inst->gain * (sample_t)sin( inst->phase + (j*inst->srate/inst->hz));
}
real_t gain;
real_t hz;
srate_t srate;
inst->phase += abuf->frameN*inst->srate/inst->hz;
var_get( ctx, kFreqHzPId, i, hz );
var_get( ctx, kGainPId, i, gain );
var_get( ctx, kSratePId, i, srate );
sample_t* v = abuf->buf + (i*abuf->frameN);
for(unsigned j=0; j<abuf->frameN; ++j)
v[j] = (sample_t)(gain * sin( inst->phaseA[i] + (2.0 * M_PI * j * hz/srate)));
inst->phaseA[i] += 2.0 * M_PI * abuf->frameN * hz/srate;
}
}
return rc;