119 lines
3.6 KiB
C++
119 lines
3.6 KiB
C++
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#include "gtl_hw_recorder_wav.h"
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namespace gtl
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{
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namespace hw
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{
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recorder_wav::recorder_wav(const std::vector<gtl::analog_data*> &ad, qreal time, QString comment, QString dir, QString file, QObject *parent)
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: recorder(ad, time, comment, dir, file, "wav", parent)
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, _is_finished(false)
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{
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if(!is_success())
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return;
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*_stream << (quint32)0x46464952; // RIFF
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*_stream << (quint32)0x00000000;
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*_stream << (quint32)0x45564157; //WAVE
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*_stream << (quint32)0x4b4e554a; //JUNK
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*_stream << (quint32)28;
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for (int i = 0; i < 7; i++)
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*_stream << (quint32)0;
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*_stream << (quint32)0x20746d66; //fmt
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*_stream << (quint32)16;
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*_stream << (quint16)(3);
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*_stream << (quint16)_ad.size();
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*_stream << (quint32)qRound(_device->rate());
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*_stream << (quint32)(_device->rate()*_ad.size() * 4);
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*_stream << (quint16)(_ad.size() * 4);
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*_stream << (quint16)32;
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/*
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*_stream << (quint16)(_coding == float_32_bit ? 3 : 1);
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*_stream << (quint16)_signals.size();
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*_stream << (quint32)_rate;
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if (_coding == signed_16_bit_pcm)
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{
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*_stream << (quint32)(_rate*_signals.size() * 2);
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*_stream << (quint16)(_signals.size() * 2);
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*_stream << (quint16)16;
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}
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else if (_coding == signed_24_bit_pcm)
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{
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*_stream << (quint32)(_rate*_signals.size() * 3);
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*_stream << (quint16)(_signals.size() * 3);
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*_stream << (quint16)24;
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}
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else if (_coding == signed_32_bit_pcm | _coding == float_32_bit)
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{
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*_stream << (quint32)(_rate*_signals.size() * 4);
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*_stream << (quint16)(_signals.size() * 4);
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*_stream << (quint16)32;
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}
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else if (_coding == unsigned_8_bit_pcm)
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{
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*_stream << (quint32)(_rate*_signals.size() * 1);
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*_stream << (quint16)(_signals.size() * 1);
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*_stream << (quint16)8;
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}
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*/
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*_stream << (quint32)0x61746164; //data
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*_stream << (quint32)0x00000000;
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}
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recorder_wav::~recorder_wav()
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{
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if(!_is_finished)
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finish_writing();
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}
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void recorder_wav::finish_writing()
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{
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if(_file == nullptr)
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return;
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quint64 size_file = _file->size() - 8;
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if (size_file < 0xffffffff)
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{
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_file->seek(4);
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quint32 size = (quint32)size_file;
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*_stream << size;
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_file->seek(40 + 36);
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size -= 36 + 36;
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*_stream << size;
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}
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else
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{
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_file->seek(4);
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*_stream << (quint32) -1;
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_file->seek(40 + 36);
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*_stream << (quint32)-1;
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_file->seek(12);
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*_stream << 0x34367364;
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_file->seek(20);
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*_stream << (quint32) (size_file & 0xffffffff);
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*_stream << (quint32)((size_file >> 32) & 0xffffffff);
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size_file -= 36 + 36;
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*_stream << (quint32)(size_file & 0xffffffff);
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*_stream << (quint32)((size_file >> 32) & 0xffffffff);
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}
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_is_finished = true;
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}
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}
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}
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