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wavHeader.cpp
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/////////////////////////////////////////////////////////
//
// Name: wavHeader.cpp
//
// Copyright: Igor Baklykov (c) 2017
//
// Author: Igor Baklykov
//
// Date: 18.12.2017 16:49
//
// Description: WAVE file header class
// definition
//
/////////////////////////////////////////////////////////
#include "wavHeader.hpp"
// Default c-tor
wavHeader::wavHeader() {
sampleRate = 48000;
dataSize = 0;
numOfChannels = 1;
bitsPerSample = 16;
}
// Copy c-tor
wavHeader::wavHeader(const wavHeader &_w) {
if (&_w != this) {
sampleRate = _w.sampleRate;
dataSize = _w.dataSize;
numOfChannels = _w.numOfChannels;
bitsPerSample = _w.bitsPerSample;
}
}
// Get sample rate
unsigned int wavHeader::getSampleRate() const {
return sampleRate;
}
// Get data size
unsigned int wavHeader::getDataSize() const {
return dataSize;
}
// Get number of channels
unsigned short wavHeader::getNumOfChannels() const {
return numOfChannels;
}
// Get bits per sample
unsigned short wavHeader::getBitsPerSample() const {
return bitsPerSample;
}
// Get byte rate
unsigned int wavHeader::getByteRate() const {
return sampleRate * getBlockAlign();
}
// Get block align
unsigned short wavHeader::getBlockAlign() const {
return numOfChannels * bitsPerSample / 8;
}
// Set sample rate
void wavHeader::setSampleRate(const unsigned int &_sampleRate) {
sampleRate = _sampleRate;
}
// Set data size
void wavHeader::setDataSize(const unsigned int &_dataSize) {
dataSize = _dataSize;
}
// Set number of channels
void wavHeader::setNumOfChannels(const unsigned short &_numOfChannels) {
numOfChannels = _numOfChannels;
}
// Set bits per sample
void wavHeader::setBitsPerSample(const unsigned short &_bitsPerSample) {
bitsPerSample = _bitsPerSample;
}
// Write header
bool wavHeader::write(const char *_buffer) const {
*(unsigned int*)&_buffer[0] = WAV_RIFF_CHUNK_ID;
*(unsigned int*)&_buffer[4] = 36 + dataSize;
*(unsigned int*)&_buffer[8] = WAV_WAVE_CHUNK_ID;
*(unsigned int*)&_buffer[12] = WAV_FMT__SUBCHUNK_ID;
*(unsigned int*)&_buffer[16] = 16;
*(unsigned short*)&_buffer[20] = 1;
*(unsigned short*)&_buffer[22] = numOfChannels;
*(unsigned int*)&_buffer[24] = sampleRate;
*(unsigned int*)&_buffer[28] = getByteRate();
*(unsigned short*)&_buffer[32] = getBlockAlign();
*(unsigned short*)&_buffer[34] = bitsPerSample;
*(unsigned int*)&_buffer[36] = WAV_DATA_SUBCHUNK_ID;
*(unsigned int*)&_buffer[40] = dataSize;
return true;
}
// D-tor
wavHeader::~wavHeader() {
sampleRate = 0;
dataSize = 0;
numOfChannels = 0;
bitsPerSample = 0;
}