You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
#include <array>
|
|
#include <cstdint>
|
|
|
|
//#define ENABLE_SIGGEN
|
|
|
|
constexpr unsigned int MAX_SAMPLE_BUFFER_SIZE = 4000;
|
|
|
|
using Sample = uint16_t;
|
|
|
|
class SampleBuffer
|
|
{
|
|
public:
|
|
SampleBuffer(Sample *buffer) :
|
|
m_buffer(buffer) {}
|
|
|
|
void clear() {
|
|
/*static const Sample ref[21] = {
|
|
100, 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800,
|
|
2000, 2200, 2400, 2600, 2800, 3000, 3200, 3400, 3600, 3800, 4095
|
|
};
|
|
for (unsigned int i = 0; i < m_size; i++)
|
|
m_buffer[i] = ref[i % 21];*/
|
|
std::fill(m_buffer, m_buffer + m_size, 2048);
|
|
}
|
|
void modify(Sample *data, unsigned int srcsize) {
|
|
auto size = srcsize < m_size ? srcsize : m_size;
|
|
std::copy(data, data + size, m_buffer);
|
|
m_modified = m_buffer;
|
|
}
|
|
void midmodify(Sample *data, unsigned int srcsize) {
|
|
auto size = srcsize < m_size / 2 ? srcsize : m_size / 2;
|
|
std::copy(data, data + size, middata());
|
|
m_modified = middata();
|
|
}
|
|
|
|
void setSize(unsigned int size) {
|
|
m_size = size < MAX_SAMPLE_BUFFER_SIZE ? size : MAX_SAMPLE_BUFFER_SIZE;
|
|
}
|
|
|
|
Sample *data() {
|
|
return m_buffer;
|
|
}
|
|
Sample *middata() {
|
|
return m_buffer + m_size / 2;
|
|
}
|
|
uint8_t *bytedata() {
|
|
return reinterpret_cast<uint8_t *>(m_buffer);
|
|
}
|
|
|
|
Sample *modified() {
|
|
auto m = m_modified;
|
|
m_modified = nullptr;
|
|
return m;
|
|
}
|
|
unsigned int size() const {
|
|
return m_size;
|
|
}
|
|
unsigned int bytesize() const {
|
|
return m_size * sizeof(Sample);
|
|
}
|
|
|
|
private:
|
|
//std::array<Sample, MAX_SAMPLE_BUFFER_SIZE> m_buffer;
|
|
Sample *m_buffer = nullptr;
|
|
unsigned int m_size = MAX_SAMPLE_BUFFER_SIZE;
|
|
Sample *m_modified = nullptr;
|
|
};
|
|
|