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Add SampleAdapters for real samples

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This commit is contained in:
Mike Walters
2020-03-05 15:47:27 +00:00
parent 1ca8440f1b
commit e75fe61474
3 changed files with 90 additions and 2 deletions
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87
inputsource.cpp
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@@ -63,7 +63,7 @@ public:
size_t sampleSize() override {
return sizeof(std::complex<int8_t>);
}
void copyRange(const void* const src, size_t start, size_t length, std::complex<float>* const dest) override {
auto s = reinterpret_cast<const std::complex<int8_t>*>(src);
std::transform(&s[start], &s[start + length], dest,
@@ -80,7 +80,7 @@ public:
size_t sampleSize() override {
return sizeof(std::complex<uint8_t>);
}
void copyRange(const void* const src, size_t start, size_t length, std::complex<float>* const dest) override {
auto s = reinterpret_cast<const std::complex<uint8_t>*>(src);
std::transform(&s[start], &s[start + length], dest,
@@ -92,6 +92,73 @@ public:
}
};
class RealF32SampleAdapter : public SampleAdapter {
public:
size_t sampleSize() override {
return sizeof(float);
}
void copyRange(const void* const src, size_t start, size_t length, std::complex<float>* const dest) override {
auto s = reinterpret_cast<const float*>(src);
std::transform(&s[start], &s[start + length], dest,
[](const float& v) -> std::complex<float> {
return {v, 0.0f};
}
);
}
};
class RealS16SampleAdapter : public SampleAdapter {
public:
size_t sampleSize() override {
return sizeof(int16_t);
}
void copyRange(const void* const src, size_t start, size_t length, std::complex<float>* const dest) override {
auto s = reinterpret_cast<const int16_t*>(src);
std::transform(&s[start], &s[start + length], dest,
[](const int16_t& v) -> std::complex<float> {
const float k = 1.0f / 32768.0f;
return { v * k, 0.0f };
}
);
}
};
class RealS8SampleAdapter : public SampleAdapter {
public:
size_t sampleSize() override {
return sizeof(int8_t);
}
void copyRange(const void* const src, size_t start, size_t length, std::complex<float>* const dest) override {
auto s = reinterpret_cast<const int8_t*>(src);
std::transform(&s[start], &s[start + length], dest,
[](const int8_t& v) -> std::complex<float> {
const float k = 1.0f / 128.0f;
return { v * k, 0.0f };
}
);
}
};
class RealU8SampleAdapter : public SampleAdapter {
public:
size_t sampleSize() override {
return sizeof(uint8_t);
}
void copyRange(const void* const src, size_t start, size_t length, std::complex<float>* const dest) override {
auto s = reinterpret_cast<const uint8_t*>(src);
std::transform(&s[start], &s[start + length], dest,
[](const uint8_t& v) -> std::complex<float> {
const float k = 1.0f / 128.0f;
return { (v - 127.4f) * k, 0 };
}
);
}
};
InputSource::InputSource()
{
}
@@ -131,6 +198,22 @@ void InputSource::openFile(const char *filename)
else if ((suffix == "cu8") || (suffix == "uc8")) {
sampleAdapter = std::unique_ptr<SampleAdapter>(new ComplexU8SampleAdapter());
}
else if (suffix == "f32") {
sampleAdapter = std::unique_ptr<SampleAdapter>(new RealF32SampleAdapter());
_realSignal = true;
}
else if (suffix == "s16") {
sampleAdapter = std::unique_ptr<SampleAdapter>(new RealS16SampleAdapter());
_realSignal = true;
}
else if (suffix == "s8") {
sampleAdapter = std::unique_ptr<SampleAdapter>(new RealS8SampleAdapter());
_realSignal = true;
}
else if (suffix == "u8") {
sampleAdapter = std::unique_ptr<SampleAdapter>(new RealU8SampleAdapter());
_realSignal = true;
}
else {
sampleAdapter = std::unique_ptr<SampleAdapter>(new ComplexF32SampleAdapter());
}