#include <cstring>
#include "tsop.h"
#include "tsound_t.h"
// TRop::ResampleFilterType Tau_resample_filter = Hamming3;
//---------------------------------------------------------
typedef enum {
FLT_NONE,
FLT_TRIANGLE, /* triangle filter */
FLT_MITCHELL, /* Mitchell-Netravali filter */
FLT_CUBIC_5, /* cubic convolution, a = .5 */
FLT_CUBIC_75, /* cubic convolution, a = .75 */
FLT_CUBIC_1, /* cubic convolution, a = 1 */
FLT_HANN2, /* Hann window, rad = 2 */
FLT_HANN3, /* Hann window, rad = 3 */
FLT_HAMMING2, /* Hamming window, rad = 2 */
FLT_HAMMING3, /* Hamming window, rad = 3 */
FLT_LANCZOS2, /* Lanczos window, rad = 2 */
FLT_LANCZOS3, /* Lanczos window, rad = 3 */
FLT_GAUSS, /* Gaussian convolution */
FLT_HOW_MANY
} FLT_TYPE;
//---------------------------------------------------------
typedef enum {
RESORDER_NONE,
RESORDER_BITS_RATE_CHANS,
RESORDER_CHANS_RATE_BITS,
RESORDER_RATE_BITS_CHANS,
RESORDER_CHANS_BITS_RATE,
RESORDER_BITS_RATE,
RESORDER_RATE_BITS,
RESORDER_CHANS_RATE,
RESORDER_RATE_CHANS,
RESORDER_RATE,
RESORDER_SIGN,
RESORDER_HOW_MANY
} RESORDER_TYPE;
//---------------------------------------------------------
typedef struct {
int src_offset; /* of weight[0] relative to start of period */
int n_weights;
double *weight; /* [n_weights], -1.0 <= weight <= 1.0 */
} WEIGHTSET;
//---------------------------------------------------------
typedef struct {
int src_period; /* after a period src and dst are in step again */
int dst_period;
WEIGHTSET *weightset; /* [dst_period] */
} FILTER;
//---------------------------------------------------------
#define M_PIF float(M_PI)
#define SINC0(x, a) (sin((M_PI / (a)) * (x)) / ((M_PI / (a)) * (x)))
#define SINC0F(x, a) (sinf((M_PIF / (a)) * (x)) / ((M_PIF / (a)) * (x)))
#define SINC(x, a) ((x) == 0.0 ? 1.0 : SINC0(x, a))
#define SINCF(x, a) ((x) == 0.0F ? 1.0F : SINC0F(x, a))
#define FULL_INT_MUL_DIV(X, Y, Z) ((int)(((double)(X) * (Y) + ((Z)-1)) / (Z)))
// prototipi
void convert(TSoundTrackP &dst, const TSoundTrackP &src);
namespace {
//---------------------------------------------------------
void simplifyRatio(int *p_a, int *p_b) {
int a = *p_a, b = *p_b;
while (a != b)
if (a > b)
a -= b;
else
b -= a;
if (a != 1) {
*p_a /= a;
*p_b /= a;
}
}
//---------------------------------------------------------
int getFilterRadius(FLT_TYPE flt_type) {
int result = 0;
switch (flt_type) {
case FLT_TRIANGLE:
result = 1;
break;
case FLT_MITCHELL:
result = 2;
break;
case FLT_CUBIC_5:
result = 2;
break;
case FLT_CUBIC_75:
result = 2;
break;
case FLT_CUBIC_1:
result = 2;
break;
case FLT_HANN2:
result = 2;
break;
case FLT_HANN3:
result = 3;
break;
case FLT_HAMMING2:
result = 2;
break;
case FLT_HAMMING3:
result = 3;
break;
case FLT_LANCZOS2:
result = 2;
break;
case FLT_LANCZOS3:
result = 3;
break;
case FLT_GAUSS:
result = 2;
break;
default:
assert(!"bad filter type");
break;
}
return result;
}
//---------------------------------------------------------
double filterValue(FLT_TYPE flt_type, double x) {
if (!x) return 1.0;
double result;
switch (flt_type) {
case FLT_TRIANGLE:
if (x < -1.0)
result = 0.0;
else if (x < 0.0)
result = 1.0 + x;
else if (x < 1.0)
result = 1.0 - x;
else
result = 0.0;
break;
case FLT_MITCHELL: {
static double p0, p2, p3, q0, q1, q2, q3;
if (!p0) {
const double b = 1.0 / 3.0;
const double c = 1.0 / 3.0;
p0 = (6.0 - 2.0 * b) / 6.0;
p2 = (-18.0 + 12.0 * b + 6.0 * c) / 6.0;
p3 = (12.0 - 9.0 * b - 6.0 * c) / 6.0;
q0 = (8.0 * b + 24.0 * c) / 6.0;
q1 = (-12.0 * b - 48.0 * c) / 6.0;
q2 = (6.0 * b + 30.0 * c) / 6.0;
q3 = (-b - 6.0 * c) / 6.0;
}
if (x < -2.0)
result = 0.0;
else if (x < -1.0)
result = (q0 - x * (q1 - x * (q2 - x * q3)));
else if (x < 0.0)
result = (p0 + x * x * (p2 - x * p3));
else if (x < 1.0)
result = (p0 + x * x * (p2 + x * p3));
else if (x < 2.0)
result = (q0 + x * (q1 + x * (q2 + x * q3)));
break;
}
case FLT_CUBIC_5:
if (x < 0.0)
x = -x;
else if (x < 1.0)
result = 2.5 * x * x * x - 3.5 * x * x + 1;
else if (x < 2.0)
result = 0.5 * x * x * x - 2.5 * x * x + 4 * x - 2;
break;
case FLT_CUBIC_75:
if (x < 0.0)
x = -x;
else if (x < 1.0)
result = 2.75 * x * x * x - 3.75 * x * x + 1;
else if (x < 2.0)
result = 0.75 * x * x * x - 3.75 * x * x + 6 * x - 3;
break;
case FLT_CUBIC_1:
if (x < 0.0)
x = -x;
else if (x < 1.0)
result = 3 * x * x * x - 4 * x * x + 1;
else if (x < 2.0)
result = x * x * x - 5 * x * x + 8 * x - 4;
break;
case FLT_HANN2:
if (x <= -2.0)
result = 0.0;
else if (x < 2.0)
result = SINC0(x, 1) * (0.5 + 0.5 * cos(M_PI_2 * x));
break;
case FLT_HANN3:
if (x <= -3.0)
result = 0.0;
else if (x < 3.0)
result = SINC0(x, 1) * (0.5 + 0.5 * cos((M_PI / 3) * x));
break;
case FLT_HAMMING2:
if (x <= -2.0)
result = 0.0;
else if (x < 2.0)
result = SINC0(x, 1) * (0.54 + 0.46 * cos(M_PI_2 * x));
break;
case FLT_HAMMING3:
if (x <= -3.0)
result = 0.0;
else if (x < 3.0)
result = SINC0(x, 1) * (0.54 + 0.46 * cos((M_PI / 3) * x));
break;
case FLT_LANCZOS2:
if (x <= -2.0)
result = 0.0;
else if (x < 2.0)
result = SINC0(x, 1) * SINC0(x, 2);
break;
case FLT_LANCZOS3:
if (x <= -3.0)
result = 0.0;
else if (x < 3.0)
result = SINC0(x, 1) * SINC0(x, 3);
break;
case FLT_GAUSS:
if (x <= -2.0)
result = 0.0;
else if (x < 2.0)
result = exp((-M_PI) * x * x);
/* exp(-M_PI*2*2)~=3.5*10^-6 */
break;
default:
assert(!"bad filter type");
}
return result;
}
//---------------------------------------------------------
} // namespace
//==============================================================================
template <class T1, class T2>
void convertSamplesT(TSoundTrackT<T1> &dst, const TSoundTrackT<T2> &src) {
const T2 *srcSample = src.samples();
T1 *dstSample = dst.samples();
const T2 *srcEndSample =
srcSample + std::min(src.getSampleCount(), dst.getSampleCount());
while (srcSample < srcEndSample) {
*dstSample = T1::from(*srcSample);
++dstSample;
++srcSample;
}
}
//==============================================================================
template <class T>
T *resampleT(T &src, TINT32 sampleRate, FLT_TYPE flt_type) {
typedef typename T::SampleType SampleType;
typedef typename T::SampleType::ChannelValueType ChannelValueType;
T *dst = new TSoundTrackT<SampleType>(
sampleRate, src.getChannelCount(),
(TINT32)(src.getSampleCount() *
(sampleRate / (double)src.getSampleRate())));
double src_rad, f, src_f0, src_to_f;
double weight, weightsum;
int iw, is, s0, ip, first, last;
FILTER filter;
filter.src_period = (int)src.getSampleRate();
filter.dst_period = (int)dst->getSampleRate();
simplifyRatio(&filter.src_period, &filter.dst_period);
filter.weightset = new WEIGHTSET[filter.dst_period];
if (!filter.weightset) return 0;
int flt_rad = getFilterRadius(flt_type);
double dstRate = (double)dst->getSampleRate();
double srcRate = (double)src.getSampleRate();
double dst_to_src = srcRate / dstRate;
if (srcRate > dstRate) {
src_rad = flt_rad * dst_to_src;
src_to_f = dstRate / srcRate;
} else {
src_rad = flt_rad;
src_to_f = 1.0;
}
for (ip = 0; ip < filter.dst_period; ip++) {
src_f0 = ip * dst_to_src;
if (ip == 0 && srcRate < dstRate)
first = last = 0;
else {
first = intGT(src_f0 - src_rad);
last = intLT(src_f0 + src_rad);
}
filter.weightset[ip].src_offset = first;
filter.weightset[ip].n_weights = last - first + 1;
filter.weightset[ip].weight = new double[filter.weightset[ip].n_weights];
if (!filter.weightset[ip].weight) return 0;
weightsum = 0.0;
for (is = first; is <= last; is++) {
f = (is - src_f0) * src_to_f;
weight = filterValue(flt_type, f);
filter.weightset[ip].weight[is - first] = weight;
weightsum += weight;
}
assert(weightsum);
for (is = first; is <= last; is++)
filter.weightset[ip].weight[is - first] /= weightsum;
}
ip = 0;
s0 = 0;
for (TINT32 id = 0; id < dst->getSampleCount(); id++) {
SampleType dstSample;
SampleType srcSample;
is = s0 + filter.weightset[ip].src_offset;
int iwFirst, iwLast;
if (is > 0) {
iwFirst = 0;
iwLast = std::min<int>(filter.weightset[ip].n_weights,
src.getSampleCount() - is);
} else {
iwFirst = -is;
is = 0;
iwLast =
std::min<int>(filter.weightset[ip].n_weights, src.getSampleCount());
}
double dstChannel[2];
dstChannel[0] = 0;
dstChannel[1] = 0;
dstSample = SampleType();
for (iw = iwFirst; iw < iwLast; iw++, is++) {
weight = filter.weightset[ip].weight[iw];
srcSample = *(src.samples() + is);
/*
T::SampleType tmp = srcSample*weight;
dstSample += tmp;
*/
for (int i = 0; i < src.getChannelCount(); i++)
dstChannel[i] += (double)(srcSample.getValue(i) * weight);
// assert(dstSample.getValue(0) == dstChannel[0]);
}
for (int i = 0; i < src.getChannelCount(); i++)
dstSample.setValue(i, (ChannelValueType)(tround(dstChannel[i])));
*(dst->samples() + id) = dstSample;
ip++;
if (ip == filter.dst_period) {
ip = 0;
s0 += filter.src_period;
}
}
for (ip = 0; ip < filter.dst_period; ip++)
delete[] filter.weightset[ip].weight;
delete[] filter.weightset;
return dst;
}
//=============================================================================
class TSoundTrackResample final : public TSoundTransform {
TINT32 m_sampleRate;
FLT_TYPE m_filterType;
public:
TSoundTrackResample(TINT32 sampleRate, FLT_TYPE filterType)
: TSoundTransform(), m_sampleRate(sampleRate), m_filterType(filterType) {}
~TSoundTrackResample(){};
TSoundTrackP compute(const TSoundTrackMono8Signed &src) override {
TSoundTrackMono8Signed *dst = resampleT(
const_cast<TSoundTrackMono8Signed &>(src), m_sampleRate, m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackMono8Unsigned &src) override {
TSoundTrackMono8Unsigned *dst =
resampleT(const_cast<TSoundTrackMono8Unsigned &>(src), m_sampleRate,
m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackStereo8Signed &src) override {
TSoundTrackStereo8Signed *dst =
resampleT(const_cast<TSoundTrackStereo8Signed &>(src), m_sampleRate,
m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &src) override {
TSoundTrackStereo8Unsigned *dst =
resampleT(const_cast<TSoundTrackStereo8Unsigned &>(src), m_sampleRate,
m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackMono16 &src) override {
TSoundTrackMono16 *dst = resampleT(const_cast<TSoundTrackMono16 &>(src),
m_sampleRate, m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackStereo16 &src) override {
TSoundTrackStereo16 *dst = resampleT(const_cast<TSoundTrackStereo16 &>(src),
m_sampleRate, m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackMono24 &src) override {
TSoundTrackMono24 *dst = resampleT(const_cast<TSoundTrackMono24 &>(src),
m_sampleRate, m_filterType);
return TSoundTrackP(dst);
}
TSoundTrackP compute(const TSoundTrackStereo24 &src) override {
TSoundTrackStereo24 *dst = resampleT(const_cast<TSoundTrackStereo24 &>(src),
m_sampleRate, m_filterType);
return TSoundTrackP(dst);
}
};
//==============================================================================
TSoundTrackP TSop::resample(TSoundTrackP src, TINT32 sampleRate) {
TSoundTrackResample *resample =
new TSoundTrackResample(sampleRate, FLT_HAMMING3);
TSoundTrackP dst = src->apply(resample);
delete resample;
return dst;
}
//==============================================================================
template <class SRC>
TSoundTrackP doConvertWithoutResamplingT(SRC *src,
const TSoundTrackFormat &dstFormat) {
TSoundTrackP dst = TSoundTrack::create(dstFormat, src->getSampleCount());
if (!dst) return 0;
TSoundTrackMono8Unsigned *dstM8U =
dynamic_cast<TSoundTrackMono8Unsigned *>(dst.getPointer());
if (dstM8U) {
convertSamplesT(*dstM8U, *src);
return dstM8U;
}
TSoundTrackMono8Signed *dstM8S =
dynamic_cast<TSoundTrackMono8Signed *>(dst.getPointer());
if (dstM8S) {
convertSamplesT(*dstM8S, *src);
return dstM8S;
}
TSoundTrackStereo8Signed *dstS8S =
dynamic_cast<TSoundTrackStereo8Signed *>(dst.getPointer());
if (dstS8S) {
convertSamplesT(*dstS8S, *src);
return dstS8S;
}
TSoundTrackStereo8Unsigned *dstS8U =
dynamic_cast<TSoundTrackStereo8Unsigned *>(dst.getPointer());
if (dstS8U) {
convertSamplesT(*dstS8U, *src);
return dstS8U;
}
TSoundTrackMono16 *dstM16 =
dynamic_cast<TSoundTrackMono16 *>(dst.getPointer());
if (dstM16) {
convertSamplesT(*dstM16, *src);
return dstM16;
}
TSoundTrackStereo16 *dstS16 =
dynamic_cast<TSoundTrackStereo16 *>(dst.getPointer());
if (dstS16) {
convertSamplesT(*dstS16, *src);
return dstS16;
}
TSoundTrackMono24 *dstM24 =
dynamic_cast<TSoundTrackMono24 *>(dst.getPointer());
if (dstM24) {
convertSamplesT(*dstM24, *src);
return dstM24;
}
TSoundTrackStereo24 *dstS24 =
dynamic_cast<TSoundTrackStereo24 *>(dst.getPointer());
if (dstS24) {
convertSamplesT(*dstS24, *src);
return dstS24;
}
return 0;
}
//------------------------------------------------------------------------------
class TSoundTrackConverterWithoutResampling final : public TSoundTransform {
TSoundTrackFormat m_format;
public:
TSoundTrackConverterWithoutResampling(const TSoundTrackFormat &format)
: m_format(format) {}
~TSoundTrackConverterWithoutResampling(){};
TSoundTrackP compute(const TSoundTrackMono8Signed &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackMono8Unsigned &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackStereo8Signed &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackMono16 &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackStereo16 &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackMono24 &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
TSoundTrackP compute(const TSoundTrackStereo24 &src) override {
return doConvertWithoutResamplingT(&src, m_format);
}
};
//-----------------------------------------------------------------------------
namespace {
void convertWithoutResampling(TSoundTrackP &dst, const TSoundTrackP &src) {
TSoundTrackConverterWithoutResampling *converter;
converter = new TSoundTrackConverterWithoutResampling(dst->getFormat());
dst = src->apply(converter);
delete converter;
}
} // namespace
//==============================================================================
TSoundTrackP TSop::convert(const TSoundTrackP &src,
const TSoundTrackFormat &dstFormat) {
TINT32 dstSampleCount =
(TINT32)(src->getSampleCount() *
(dstFormat.m_sampleRate / (double)src->getSampleRate()));
TSoundTrackP dst = TSoundTrack::create(dstFormat, dstSampleCount);
TSop::convert(dst, src);
return dst;
}
//------------------------------------------------------------------------------
void TSop::convert(TSoundTrackP &dst, const TSoundTrackP &src) {
int src_reslen, dst_reslen;
int src_bits, dst_bits;
int src_chans, dst_chans;
TSoundTrackP tmp, tmq;
RESORDER_TYPE order;
assert(src->getSampleCount() >= 0 && dst->getSampleCount() >= 0);
if (!dst->getSampleCount()) return;
if (!src->getSampleCount()) {
dst->blank(0L, (TINT32)(dst->getSampleCount() - 1));
return;
}
if (src->getSampleRate() == dst->getSampleRate()) {
src_reslen = dst->getSampleCount();
notMoreThan((int)src->getSampleCount(), src_reslen);
dst_reslen = src_reslen;
convertWithoutResampling(dst, src);
} else {
src_reslen = FULL_INT_MUL_DIV(dst->getSampleCount(), src->getSampleRate(),
dst->getSampleRate());
if (src_reslen > src->getSampleCount()) {
src_reslen = src->getSampleCount();
dst_reslen = FULL_INT_MUL_DIV(src_reslen, dst->getSampleRate(),
src->getSampleRate());
} else
dst_reslen = dst->getSampleCount();
src_chans = src->getChannelCount();
dst_chans = dst->getChannelCount();
src_bits = src->getBitPerSample();
dst_bits = dst->getBitPerSample();
if (src_chans == dst_chans && src_bits == dst_bits)
if (src->isSampleSigned() == dst->isSampleSigned())
order = RESORDER_RATE;
else
order = RESORDER_SIGN;
else if (src_chans < dst_chans) {
if (src_bits < dst_bits)
order = RESORDER_BITS_RATE_CHANS;
else
order = RESORDER_RATE_BITS_CHANS;
} else if (src_chans > dst_chans) {
if (src_bits > dst_bits)
order = RESORDER_CHANS_RATE_BITS;
else
order = RESORDER_CHANS_BITS_RATE;
} else {
if (src_bits > dst_bits)
order = RESORDER_RATE_BITS;
else
order = RESORDER_BITS_RATE;
}
switch (order) {
case RESORDER_CHANS_RATE_BITS:
case RESORDER_BITS_RATE_CHANS:
int chans, bitPerSample;
if (src->getChannelCount() <= dst->getChannelCount())
chans = src->getChannelCount();
else
chans = dst->getChannelCount();
if (src->getBitPerSample() >= dst->getBitPerSample())
bitPerSample = src->getBitPerSample();
else
bitPerSample = dst->getBitPerSample();
tmp = TSoundTrack::create((int)src->getSampleRate(), bitPerSample, chans,
src_reslen * src->getSampleSize());
convertWithoutResampling(tmp, src);
tmq = TSop::resample(tmp, (TINT32)dst->getSampleRate());
convertWithoutResampling(dst, tmq);
break;
case RESORDER_RATE_BITS_CHANS:
case RESORDER_RATE_BITS:
case RESORDER_RATE_CHANS:
tmp = TSop::resample(src, (TINT32)dst->getSampleRate());
convertWithoutResampling(dst, tmp);
break;
case RESORDER_CHANS_BITS_RATE:
case RESORDER_BITS_RATE:
case RESORDER_CHANS_RATE:
case RESORDER_SIGN:
tmp = TSoundTrack::create((int)src->getSampleRate(),
dst->getBitPerSample(), dst->getChannelCount(),
src_reslen * dst->getSampleSize(),
dst->isSampleSigned());
convertWithoutResampling(tmp, src);
dst = TSop::resample(tmp, (TINT32)dst->getSampleRate());
break;
case RESORDER_RATE:
dst = TSop::resample(src, (TINT32)dst->getSampleRate());
break;
default:
assert(false);
break;
}
}
if (dst_reslen < dst->getSampleCount())
dst->blank((TINT32)dst_reslen, (TINT32)(dst->getSampleCount() - 1));
}
//==============================================================================
template <class T>
TSoundTrackP doReverb(TSoundTrackT<T> *src, double delayTime,
double decayFactor, double extendTime) {
TINT32 dstSampleCount =
src->getSampleCount() + (TINT32)(src->getSampleRate() * extendTime);
TSoundTrackT<T> *dst = new TSoundTrackT<T>(
src->getSampleRate(), src->getChannelCount(), dstSampleCount);
TINT32 sampleRate = (TINT32)src->getSampleRate();
TINT32 k = (TINT32)(sampleRate * delayTime);
T *srcSample = src->samples();
T *dstSample = dst->samples();
T *endDstSample = dst->samples() + k;
while (dstSample < endDstSample) *dstSample++ = *srcSample++;
// la formula del reverb e'
// out(i) = in(i) + decayFactor * out(i - k)
// int channelCount = src->getChannelCount();
endDstSample =
dst->samples() + std::min(dstSampleCount, (TINT32)src->getSampleCount());
while (dstSample < endDstSample) {
//*dstSample = *srcSample + *(dstSample - k)*decayFactor;
*dstSample = T::mix(*srcSample, 1, *(dstSample - k), decayFactor);
++dstSample;
++srcSample;
}
endDstSample = dst->samples() + dstSampleCount;
while (dstSample < endDstSample) {
//*dstSample = *(dstSample - k)*decayFactor;
*dstSample = T::mix(T(), 0, *(dstSample - k), decayFactor);
++dstSample;
}
return TSoundTrackP(dst);
}
//==============================================================================
class TSoundReverb final : public TSoundTransform {
double m_delayTime;
double m_decayFactor;
double m_extendTime;
public:
TSoundReverb(double delayTime, double decayFactor, double extendTime)
: m_delayTime(delayTime)
, m_decayFactor(decayFactor)
, m_extendTime(extendTime) {}
~TSoundReverb() {}
TSoundTrackP compute(const TSoundTrackMono8Signed &src) override {
return doReverb(const_cast<TSoundTrackMono8Signed *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackMono8Unsigned &src) override {
return doReverb(const_cast<TSoundTrackMono8Unsigned *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackStereo8Signed &src) override {
return doReverb(const_cast<TSoundTrackStereo8Signed *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &src) override {
return doReverb(const_cast<TSoundTrackStereo8Unsigned *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackMono16 &src) override {
return doReverb(const_cast<TSoundTrackMono16 *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackStereo16 &src) override {
return doReverb(const_cast<TSoundTrackStereo16 *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackMono24 &src) override {
return doReverb(const_cast<TSoundTrackMono24 *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
TSoundTrackP compute(const TSoundTrackStereo24 &src) override {
return doReverb(const_cast<TSoundTrackStereo24 *>(&src), m_delayTime,
m_decayFactor, m_extendTime);
}
};
//==============================================================================
TSoundTrackP TSop::reverb(TSoundTrackP src, double delayTime,
double decayFactor, double extendTime) {
TSoundReverb *reverb = new TSoundReverb(delayTime, decayFactor, extendTime);
assert(reverb);
if (!reverb) return TSoundTrackP();
TSoundTrackP dst = src->apply(reverb);
delete reverb;
return dst;
}
//==============================================================================
template <class T>
TSoundTrackP doGate(TSoundTrackT<T> *src, double threshold, double holdTime,
double /*releaseTime*/) {
TSoundTrackT<T> *dst = new TSoundTrackT<T>(
src->getSampleRate(), src->getChannelCount(), src->getSampleCount());
double sampleExcursion_inv =
1.0 / (double)(src->getMaxPressure(0, src->getSampleCount() - 1, 0) -
src->getMinPressure(0, src->getSampleCount() - 1, 0));
TINT32 holdTimeSamples = src->secondsToSamples(holdTime);
TINT32 time = 0;
const T *srcSample = src->samples();
const T *srcEndSample = srcSample + src->getSampleCount();
T *dstSample = dst->samples();
while (srcSample < srcEndSample) {
if (fabs(srcSample->getValue(0) * sampleExcursion_inv) < threshold) {
if (time >= holdTimeSamples)
*dstSample = T();
else
*dstSample = *srcSample;
++time;
} else {
time = 0;
*dstSample = *srcSample;
}
++srcSample;
++dstSample;
}
return dst;
}
//==============================================================================
class TSoundGate final : public TSoundTransform {
double m_threshold;
double m_holdTime;
double m_releaseTime;
public:
TSoundGate(double threshold, double holdTime, double releaseTime)
: m_threshold(threshold)
, m_holdTime(holdTime)
, m_releaseTime(releaseTime) {}
~TSoundGate() {}
TSoundTrackP compute(const TSoundTrackMono8Signed &src) override {
return doGate(const_cast<TSoundTrackMono8Signed *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackMono8Unsigned &src) override {
return doGate(const_cast<TSoundTrackMono8Unsigned *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackStereo8Signed &src) override {
return doGate(const_cast<TSoundTrackStereo8Signed *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &src) override {
return doGate(const_cast<TSoundTrackStereo8Unsigned *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackMono16 &src) override {
return doGate(const_cast<TSoundTrackMono16 *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackStereo16 &src) override {
return doGate(const_cast<TSoundTrackStereo16 *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackMono24 &src) override {
return doGate(const_cast<TSoundTrackMono24 *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
TSoundTrackP compute(const TSoundTrackStereo24 &src) override {
return doGate(const_cast<TSoundTrackStereo24 *>(&src), m_threshold,
m_holdTime, m_releaseTime);
}
};
//==============================================================================
TSoundTrackP TSop::gate(TSoundTrackP src, double threshold, double holdTime,
double releaseTime) {
TSoundGate *gate = new TSoundGate(threshold, holdTime, releaseTime);
assert(gate);
if (!gate) return TSoundTrackP();
TSoundTrackP dst = src->apply(gate);
delete gate;
return dst;
}
//==============================================================================
TSoundTrackP TSop::timeStrech(TSoundTrackP src, double ratio) {
TINT32 sampleRate = (TINT32)(src->getSampleRate() * ratio);
if (sampleRate > 100000) sampleRate = 100000;
TSoundTrackP st;
if (sampleRate > 0) {
TSoundTrackResample *resample =
new TSoundTrackResample(sampleRate, FLT_TRIANGLE);
st = src->apply(resample);
delete resample;
st->setSampleRate(src->getSampleRate());
}
return st;
}
//========================================================================================
template <class T>
TSoundTrackP doEcho(TSoundTrackT<T> *src, double delayTime, double decayFactor,
double extendTime) {
typedef typename T::ChannelValueType ChannelValueType;
TINT32 dstSampleCount =
src->getSampleCount() + (TINT32)(src->getSampleRate() * extendTime);
TSoundTrackT<T> *dst = new TSoundTrackT<T>(
src->getSampleRate(), src->getChannelCount(), dstSampleCount);
TINT32 sampleRate = (TINT32)src->getSampleRate();
TINT32 k = (TINT32)(sampleRate * delayTime);
T *srcSample = src->samples();
T *dstSample = dst->samples();
T *endDstSample = dst->samples() + k;
while (dstSample < endDstSample) *dstSample++ = *srcSample++;
// la formula dell'echo e'
// out(i) = in(i) + decayFactor * in(i - k)
bool chans = src->getChannelCount() == 2;
endDstSample =
dst->samples() + std::min(dstSampleCount, (TINT32)src->getSampleCount());
while (dstSample < endDstSample) {
//*dstSample = *srcSample + *(srcSample - k)*decayFactor;
ChannelValueType val = (ChannelValueType)(
(srcSample - k)->getValue(TSound::MONO) * decayFactor);
dstSample->setValue(TSound::MONO, srcSample->getValue(TSound::MONO) + val);
if (chans) {
ChannelValueType val = (ChannelValueType)(
(srcSample - k)->getValue(TSound::RIGHT) * decayFactor);
dstSample->setValue(TSound::RIGHT,
srcSample->getValue(TSound::RIGHT) + val);
}
++dstSample;
++srcSample;
}
endDstSample = dstSample + k;
while (dstSample < endDstSample) {
//*dstSample = *(srcSample - k)*decayFactor;
ChannelValueType val = (ChannelValueType)(
(srcSample - k)->getValue(TSound::MONO) * decayFactor);
dstSample->setValue(TSound::MONO, val);
if (chans) {
ChannelValueType val = (ChannelValueType)(
(srcSample - k)->getValue(TSound::RIGHT) * decayFactor);
dstSample->setValue(TSound::RIGHT, val);
}
++dstSample;
++srcSample;
}
srcSample = src->samples() + src->getSampleCount() - 1;
endDstSample = dst->samples() + dstSampleCount;
while (dstSample < endDstSample) {
//*dstSample = *(srcSample)*decayFactor;
ChannelValueType val =
(ChannelValueType)(srcSample->getValue(TSound::MONO) * decayFactor);
dstSample->setValue(TSound::MONO, val);
if (chans) {
ChannelValueType val =
(ChannelValueType)(srcSample->getValue(TSound::RIGHT) * decayFactor);
dstSample->setValue(TSound::RIGHT, val);
}
++dstSample;
}
return TSoundTrackP(dst);
}
//------------------------------------------------------------------------------
void TSop::echo(TSoundTrackP &dst, const TSoundTrackP &src, double delayTime,
double decayFactor, double extendTime) {
TSoundTrackMono8Signed *srcM8S;
srcM8S = dynamic_cast<TSoundTrackMono8Signed *>(src.getPointer());
if (srcM8S)
dst = doEcho(srcM8S, delayTime, decayFactor, extendTime);
else {
TSoundTrackMono8Unsigned *srcM8U;
srcM8U = dynamic_cast<TSoundTrackMono8Unsigned *>(src.getPointer());
if (srcM8U)
dst = doEcho(srcM8U, delayTime, decayFactor, extendTime);
else {
TSoundTrackStereo8Signed *srcS8S;
srcS8S = dynamic_cast<TSoundTrackStereo8Signed *>(src.getPointer());
if (srcS8S)
dst = doEcho(srcS8S, delayTime, decayFactor, extendTime);
else {
TSoundTrackStereo8Unsigned *srcS8U;
srcS8U = dynamic_cast<TSoundTrackStereo8Unsigned *>(src.getPointer());
if (srcS8U)
dst = doEcho(srcS8U, delayTime, decayFactor, extendTime);
else {
TSoundTrackMono16 *srcM16;
srcM16 = dynamic_cast<TSoundTrackMono16 *>(src.getPointer());
if (srcM16)
dst = doEcho(srcM16, delayTime, decayFactor, extendTime);
else {
TSoundTrackStereo16 *srcS16;
srcS16 = dynamic_cast<TSoundTrackStereo16 *>(src.getPointer());
if (srcS16)
dst = doEcho(srcS16, delayTime, decayFactor, extendTime);
else {
TSoundTrackMono24 *srcM24;
srcM24 = dynamic_cast<TSoundTrackMono24 *>(src.getPointer());
if (srcM24)
dst = doEcho(srcM24, delayTime, decayFactor, extendTime);
else {
TSoundTrackStereo24 *srcS24;
srcS24 = dynamic_cast<TSoundTrackStereo24 *>(src.getPointer());
if (srcS24)
dst = doEcho(srcS24, delayTime, decayFactor, extendTime);
}
}
}
}
}
}
}
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::insertBlank(TSoundTrackP src, TINT32 s0, TINT32 len) {
assert(len >= 0);
if (len == 0) return src;
TINT32 ss0 = tcrop<TINT32>(s0, 0, src->getSampleCount());
TSoundTrackFormat format = src->getFormat();
TSoundTrackP dst = TSoundTrack::create(format, (src->getSampleCount() + len));
UCHAR *dstRawData = (UCHAR *)dst->getRawData();
UCHAR *srcRawData = (UCHAR *)src->getRawData();
int bytePerSample = dst->getSampleSize();
memcpy(dstRawData, srcRawData, ss0 * bytePerSample);
if (format.m_signedSample)
memset(dstRawData + ss0 * bytePerSample, 0, len * bytePerSample);
else
memset(dstRawData + ss0 * bytePerSample, 127, len * bytePerSample);
memcpy(dstRawData + (ss0 + len) * bytePerSample,
srcRawData + ss0 * bytePerSample,
(src->getSampleCount() - ss0) * bytePerSample);
return dst;
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::insertBlank(TSoundTrackP src, double t0, double len) {
return insertBlank(src, src->secondsToSamples(t0),
src->secondsToSamples(len));
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::remove(TSoundTrackP src, TINT32 s0, TINT32 s1,
TSoundTrackP &paste) {
TINT32 ss0, ss1;
ss0 = std::max<TINT32>((TINT32)0, s0);
ss1 = std::min(s1, (TINT32)(src->getSampleCount() - 1));
TSoundTrackP soundTrackSlice;
if (ss0 <= ss1) soundTrackSlice = src->extract(ss0, ss1);
if (!soundTrackSlice) {
paste = TSoundTrackP();
return src;
}
paste = soundTrackSlice->clone();
TSoundTrackFormat format = src->getFormat();
TSoundTrackP dst =
TSoundTrack::create(format, (src->getSampleCount() - (ss1 - ss0 + 1)));
TINT32 dstSampleSize = dst->getSampleSize();
UCHAR *newRowData = (UCHAR *)dst->getRawData();
UCHAR *srcRowData = (UCHAR *)src->getRawData();
memcpy(newRowData, srcRowData, ss0 * dstSampleSize);
memcpy(newRowData + (ss0 * dstSampleSize),
srcRowData + (ss1 + 1) * dstSampleSize,
(src->getSampleCount() - ss1 - 1) * dst->getSampleSize());
return dst;
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::remove(TSoundTrackP src, double t0, double t1,
TSoundTrackP &paste) {
return remove(src, src->secondsToSamples(t0), src->secondsToSamples(t1),
paste);
}
//------------------------------------------------------------------------------
template <class T>
TSoundTrackP mixT(TSoundTrackT<T> *st1, double a1, TSoundTrackT<T> *st2,
double a2) {
TINT32 sampleCount = std::max(st1->getSampleCount(), st2->getSampleCount());
TSoundTrackT<T> *dst = new TSoundTrackT<T>(
st1->getSampleRate(), st1->getChannelCount(), sampleCount);
T *dstSample = dst->samples();
T *endDstSample =
dstSample + std::min(st1->getSampleCount(), st2->getSampleCount());
T *st1Sample = st1->samples();
T *st2Sample = st2->samples();
while (dstSample < endDstSample) {
*dstSample++ = T::mix(*st1Sample, a1, *st2Sample, a2);
++st1Sample;
++st2Sample;
}
T *srcSample =
st1->getSampleCount() > st2->getSampleCount() ? st1Sample : st2Sample;
endDstSample = dst->samples() + sampleCount;
while (dstSample < endDstSample) *dstSample++ = *srcSample++;
return TSoundTrackP(dst);
}
//=============================================================================
class TSoundTrackMixer final : public TSoundTransform {
double m_alpha1, m_alpha2;
TSoundTrackP m_sndtrack;
public:
TSoundTrackMixer(double a1, double a2, const TSoundTrackP &st2)
: TSoundTransform(), m_alpha1(a1), m_alpha2(a2), m_sndtrack(st2) {}
~TSoundTrackMixer(){};
TSoundTrackP compute(const TSoundTrackMono8Signed &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (
mixT(const_cast<TSoundTrackMono8Signed *>(&src), m_alpha1,
dynamic_cast<TSoundTrackMono8Signed *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackMono8Unsigned &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (
mixT(const_cast<TSoundTrackMono8Unsigned *>(&src), m_alpha1,
dynamic_cast<TSoundTrackMono8Unsigned *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackStereo8Signed &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (
mixT(const_cast<TSoundTrackStereo8Signed *>(&src), m_alpha1,
dynamic_cast<TSoundTrackStereo8Signed *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (mixT(
const_cast<TSoundTrackStereo8Unsigned *>(&src), m_alpha1,
dynamic_cast<TSoundTrackStereo8Unsigned *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackMono16 &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (mixT(const_cast<TSoundTrackMono16 *>(&src), m_alpha1,
dynamic_cast<TSoundTrackMono16 *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackStereo16 &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (mixT(const_cast<TSoundTrackStereo16 *>(&src), m_alpha1,
dynamic_cast<TSoundTrackStereo16 *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackMono24 &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (mixT(const_cast<TSoundTrackMono24 *>(&src), m_alpha1,
dynamic_cast<TSoundTrackMono24 *>(m_sndtrack.getPointer()),
m_alpha2));
}
TSoundTrackP compute(const TSoundTrackStereo24 &src) override {
assert(src.getFormat() == m_sndtrack->getFormat());
return (mixT(const_cast<TSoundTrackStereo24 *>(&src), m_alpha1,
dynamic_cast<TSoundTrackStereo24 *>(m_sndtrack.getPointer()),
m_alpha2));
}
};
TSoundTrackP TSop::mix(const TSoundTrackP &st1, const TSoundTrackP &st2,
double a1, double a2) {
TSoundTrackMixer *converter;
a1 = tcrop<double>(a1, 0.0, 1.0);
a2 = tcrop<double>(a2, 0.0, 1.0);
converter = new TSoundTrackMixer(a1, a2, st2);
TSoundTrackP snd = st1->apply(converter);
delete converter;
return (snd);
}
//==============================================================================
//
// TSop::FadeIn
//
//==============================================================================
template <class T>
TSoundTrackP doFadeIn(const TSoundTrackT<T> &track, double riseFactor) {
typedef typename T::ChannelValueType ChannelValueType;
int sampleCount = (int)((double)track.getSampleCount() * riseFactor);
if (!sampleCount) sampleCount = 1;
assert(sampleCount);
int channelCount = track.getChannelCount();
TSoundTrackT<T> *out =
new TSoundTrackT<T>(track.getSampleRate(), channelCount, sampleCount);
double val[2], step[2];
ChannelValueType chan[2];
const T *firstSample = track.samples();
for (int k = 0; k < channelCount; ++k) {
chan[k] = firstSample->getValue(k);
if (firstSample->isSampleSigned()) {
val[k] = 0;
step[k] = (double)chan[k] / (double)sampleCount;
} else {
val[k] = 127;
step[k] = (double)(chan[k] - 128) / (double)sampleCount;
}
}
T *psample = out->samples();
T *end = psample + out->getSampleCount();
while (psample < end) {
T sample;
for (int k = 0; k < channelCount; ++k) {
sample.setValue(k, (ChannelValueType)val[k]);
val[k] += step[k];
}
*psample = sample;
++psample;
}
return out;
}
//------------------------------------------------------------------------------
class TSoundTrackFaderIn final : public TSoundTransform {
public:
TSoundTrackFaderIn(double riseFactor)
: TSoundTransform(), m_riseFactor(riseFactor) {}
TSoundTrackP compute(const TSoundTrackMono8Signed &) override;
TSoundTrackP compute(const TSoundTrackStereo8Signed &) override;
TSoundTrackP compute(const TSoundTrackMono8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackMono16 &) override;
TSoundTrackP compute(const TSoundTrackStereo16 &) override;
TSoundTrackP compute(const TSoundTrackMono24 &) override;
TSoundTrackP compute(const TSoundTrackStereo24 &) override;
double m_riseFactor;
};
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(const TSoundTrackMono8Signed &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(
const TSoundTrackStereo8Signed &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(
const TSoundTrackMono8Unsigned &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(
const TSoundTrackStereo8Unsigned &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(const TSoundTrackMono16 &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(const TSoundTrackStereo16 &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(const TSoundTrackMono24 &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderIn::compute(const TSoundTrackStereo24 &track) {
return doFadeIn(track, m_riseFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::fadeIn(const TSoundTrackP src, double riseFactor) {
TSoundTrackFaderIn *fader = new TSoundTrackFaderIn(riseFactor);
TSoundTrackP out = src->apply(fader);
delete fader;
return out;
}
//==============================================================================
//
// TSop::FadeOut
//
//==============================================================================
template <class T>
TSoundTrackP doFadeOut(const TSoundTrackT<T> &track, double decayFactor) {
typedef typename T::ChannelValueType ChannelValueType;
int sampleCount = (int)((double)track.getSampleCount() * decayFactor);
if (!sampleCount) sampleCount = 1;
assert(sampleCount);
int channelCount = track.getChannelCount();
TSoundTrackT<T> *out =
new TSoundTrackT<T>(track.getSampleRate(), channelCount, sampleCount);
double val[2], step[2];
ChannelValueType chan[2];
const T *lastSample = (track.samples() + track.getSampleCount() - 1);
for (int k = 0; k < channelCount; ++k) {
chan[k] = lastSample->getValue(k);
val[k] = (double)chan[k];
if (lastSample->isSampleSigned())
step[k] = (double)chan[k] / (double)sampleCount;
else
step[k] = (double)(chan[k] - 128) / (double)sampleCount;
}
T *psample = out->samples();
T *end = psample + out->getSampleCount();
while (psample < end) {
T sample;
for (int k = 0; k < channelCount; ++k) {
sample.setValue(k, (ChannelValueType)val[k]);
val[k] -= step[k];
}
*psample = sample;
++psample;
}
return out;
}
//------------------------------------------------------------------------------
class TSoundTrackFaderOut final : public TSoundTransform {
public:
TSoundTrackFaderOut(double decayFactor)
: TSoundTransform(), m_decayFactor(decayFactor) {}
TSoundTrackP compute(const TSoundTrackMono8Signed &) override;
TSoundTrackP compute(const TSoundTrackStereo8Signed &) override;
TSoundTrackP compute(const TSoundTrackMono8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackMono16 &) override;
TSoundTrackP compute(const TSoundTrackStereo16 &) override;
TSoundTrackP compute(const TSoundTrackMono24 &) override;
TSoundTrackP compute(const TSoundTrackStereo24 &) override;
double m_decayFactor;
};
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(const TSoundTrackMono8Signed &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(
const TSoundTrackStereo8Signed &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(
const TSoundTrackMono8Unsigned &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(
const TSoundTrackStereo8Unsigned &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(const TSoundTrackMono16 &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(const TSoundTrackStereo16 &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(const TSoundTrackMono24 &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackFaderOut::compute(const TSoundTrackStereo24 &track) {
return doFadeOut(track, m_decayFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::fadeOut(const TSoundTrackP src, double decayFactor) {
TSoundTrackFaderOut *fader = new TSoundTrackFaderOut(decayFactor);
TSoundTrackP out = src->apply(fader);
delete fader;
return out;
}
//==============================================================================
//
// TSop::CrossFade
//
//==============================================================================
template <class T>
TSoundTrackP doCrossFade(const TSoundTrackT<T> &track1, TSoundTrackT<T> *track2,
double crossFactor) {
typedef typename T::ChannelValueType ChannelValueType;
int channelCount = track2->getChannelCount();
int sampleCount = (int)((double)track2->getSampleCount() * crossFactor);
if (!sampleCount) sampleCount = 1;
assert(sampleCount);
// ultimo campione di track1
ChannelValueType chanTrack1[2];
const T *lastSample = (track1.samples() + track1.getSampleCount() - 1);
int k;
for (k = 0; k < channelCount; ++k) chanTrack1[k] = lastSample->getValue(k);
double val[2], step[2];
// primo campione di track2
ChannelValueType chanTrack2[2];
const T *firstSample = track2->samples();
for (k = 0; k < channelCount; ++k) {
chanTrack2[k] = firstSample->getValue(k);
val[k] = chanTrack1[k] - chanTrack2[k];
step[k] = val[k] / (double)sampleCount;
}
TSoundTrackT<T> *out =
new TSoundTrackT<T>(track2->getSampleRate(), channelCount, sampleCount);
T *psample = out->samples();
T *end = psample + out->getSampleCount();
while (psample < end) {
T sample;
for (int k = 0; k < channelCount; ++k) {
double tot = (double)firstSample->getValue(k) + val[k];
ChannelValueType value = (ChannelValueType)tot;
sample.setValue(k, value);
val[k] -= step[k];
}
*psample = sample;
++psample;
//++firstSample;
}
return out;
}
//------------------------------------------------------------------------------
class TSoundTrackCrossFader final : public TSoundTransform {
public:
TSoundTrackCrossFader(TSoundTrackP src, double crossFactor)
: TSoundTransform(), m_st(src), m_crossFactor(crossFactor) {}
TSoundTrackP compute(const TSoundTrackMono8Signed &) override;
TSoundTrackP compute(const TSoundTrackStereo8Signed &) override;
TSoundTrackP compute(const TSoundTrackMono8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackMono16 &) override;
TSoundTrackP compute(const TSoundTrackStereo16 &) override;
TSoundTrackP compute(const TSoundTrackMono24 &) override;
TSoundTrackP compute(const TSoundTrackStereo24 &) override;
TSoundTrackP m_st;
double m_crossFactor;
};
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(const TSoundTrackMono8Signed &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(src,
dynamic_cast<TSoundTrackMono8Signed *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(
const TSoundTrackStereo8Signed &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(
src, dynamic_cast<TSoundTrackStereo8Signed *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(
const TSoundTrackMono8Unsigned &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(
src, dynamic_cast<TSoundTrackMono8Unsigned *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(
const TSoundTrackStereo8Unsigned &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(
src, dynamic_cast<TSoundTrackStereo8Unsigned *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(const TSoundTrackMono16 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(src, dynamic_cast<TSoundTrackMono16 *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(const TSoundTrackStereo16 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(src,
dynamic_cast<TSoundTrackStereo16 *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(const TSoundTrackMono24 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(src, dynamic_cast<TSoundTrackMono24 *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFader::compute(const TSoundTrackStereo24 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFade(src,
dynamic_cast<TSoundTrackStereo24 *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::crossFade(const TSoundTrackP src1, const TSoundTrackP src2,
double crossFactor) {
TSoundTrackCrossFader *fader = new TSoundTrackCrossFader(src2, crossFactor);
TSoundTrackP out = src1->apply(fader);
delete fader;
return out;
}
//
//
//
//
//==============================================================================
//
// TSop::CrossFadeOverWrite
//
//==============================================================================
template <class T>
TSoundTrackP doCrossFadeOverWrite(const TSoundTrackT<T> &track1,
TSoundTrackT<T> *track2, double crossFactor) {
typedef typename T::ChannelValueType ChannelValueType;
int channelCount = track2->getChannelCount();
int sampleCount = (int)((double)track2->getSampleCount() * crossFactor);
int sampleCountT2 = track2->getSampleCount();
if (sampleCount == 0 && sampleCountT2 == 1) return track2;
if (sampleCount == 0) sampleCount = 1;
assert(sampleCount);
// ultimo campione di track1
ChannelValueType chanTrack1[2];
const T *lastSample = (track1.samples() + track1.getSampleCount() - 1);
int k;
for (k = 0; k < channelCount; ++k) chanTrack1[k] = lastSample->getValue(k);
double val[2], step[2];
// primo campione di track2
ChannelValueType chanTrack2[2];
const T *firstSample = track2->samples() + sampleCount;
for (k = 0; k < channelCount; ++k) {
chanTrack2[k] = firstSample->getValue(k);
val[k] = chanTrack1[k] - chanTrack2[k];
step[k] = val[k] / (double)sampleCount;
}
TSoundTrackT<T> *out =
new TSoundTrackT<T>(track2->getSampleRate(), channelCount, sampleCountT2);
T *psample = out->samples();
T *end = psample + sampleCount;
while (psample < end) {
T sample;
for (int k = 0; k < channelCount; ++k) {
double tot = (double)firstSample->getValue(k) + val[k];
ChannelValueType value = (ChannelValueType)tot;
sample.setValue(k, value);
val[k] -= step[k];
}
*psample = sample;
++psample;
}
out->copy(track2->extract(sampleCount, sampleCountT2 - 1), sampleCount);
return out;
}
//------------------------------------------------------------------------------
class TSoundTrackCrossFaderOverWrite final : public TSoundTransform {
public:
TSoundTrackCrossFaderOverWrite(TSoundTrackP src, double crossFactor)
: TSoundTransform(), m_st(src), m_crossFactor(crossFactor) {}
TSoundTrackP compute(const TSoundTrackMono8Signed &) override;
TSoundTrackP compute(const TSoundTrackStereo8Signed &) override;
TSoundTrackP compute(const TSoundTrackMono8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackStereo8Unsigned &) override;
TSoundTrackP compute(const TSoundTrackMono16 &) override;
TSoundTrackP compute(const TSoundTrackStereo16 &) override;
TSoundTrackP compute(const TSoundTrackMono24 &) override;
TSoundTrackP compute(const TSoundTrackStereo24 &) override;
TSoundTrackP m_st;
double m_crossFactor;
};
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackMono8Signed &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackMono8Signed *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackStereo8Signed &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackStereo8Signed *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackMono8Unsigned &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackMono8Unsigned *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackStereo8Unsigned &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackStereo8Unsigned *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackMono16 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackMono16 *>(m_st.getPointer()), m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackStereo16 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackStereo16 *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackMono24 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackMono24 *>(m_st.getPointer()), m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSoundTrackCrossFaderOverWrite::compute(
const TSoundTrackStereo24 &src) {
assert(src.getFormat() == m_st->getFormat());
return doCrossFadeOverWrite(
src, dynamic_cast<TSoundTrackStereo24 *>(m_st.getPointer()),
m_crossFactor);
}
//------------------------------------------------------------------------------
TSoundTrackP TSop::crossFade(double crossFactor, const TSoundTrackP src1,
const TSoundTrackP src2) {
TSoundTrackCrossFaderOverWrite *fader =
new TSoundTrackCrossFaderOverWrite(src2, crossFactor);
TSoundTrackP out = src1->apply(fader);
delete fader;
return out;
}