mirror of
https://github.com/f4exb/sdrangel.git
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131 lines
4.6 KiB
C++
131 lines
4.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2020 Edouard Griffiths, F4EXB //
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// Copyright (C) 2021 Jon Beniston, M7RCE //
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// //
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// File recorder in .wav format //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_WAV_FILERECORD_H
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#define INCLUDE_WAV_FILERECORD_H
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#include <string>
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#include <iostream>
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#include <fstream>
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#include <ctime>
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#include <QDateTime>
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#include "dsp/filerecordinterface.h"
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#include "export.h"
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class Message;
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class SDRBASE_API WavFileRecord : public FileRecordInterface {
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public:
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#pragma pack(push, 1)
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struct Chunk
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{
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char m_id[4]; // "RIFF", "fmt ", "auxi", "data"
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quint32 m_size;
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};
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struct SystemTime {
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quint16 m_year;
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quint16 m_month;
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quint16 m_dayOfWeek;
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quint16 m_day;
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quint16 m_hour;
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quint16 m_minute;
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quint16 m_second;
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quint16 m_milliseconds;
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};
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struct Auxi {
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SystemTime m_startTime;
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SystemTime m_stopTime;
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quint32 m_centerFreq;
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quint32 m_adFrequency;
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quint32 m_ifFrequency;
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quint32 m_bandwidth;
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quint32 m_iqOffset;
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quint32 m_unused2;
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quint32 m_unused3;
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quint32 m_unused4;
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quint32 m_unused5;
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char m_nextFilename[96];
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};
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struct SDRBASE_API Header
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{
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Chunk m_riffHeader;
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char m_type[4]; // "WAVE"
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Chunk m_fmtHeader;
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quint16 m_audioFormat;
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quint16 m_numChannels;
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quint32 m_sampleRate;
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quint32 m_byteRate;
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quint16 m_blockAlign;
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quint16 m_bitsPerSample;
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Chunk m_auxiHeader;
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Auxi m_auxi;
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Chunk m_dataHeader;
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QDateTime getStartTime() const;
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};
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#pragma pack(pop)
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WavFileRecord(quint32 sampleRate=0, quint64 centerFrequency=0);
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WavFileRecord(const QString& fileBase);
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virtual ~WavFileRecord();
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quint64 getByteCount() const { return m_byteCount; }
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void setMsShift(qint64 shift) override { m_msShift = shift; }
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virtual int getBytesPerSample() override { return 4; };
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const QString& getCurrentFileName() override { return m_curentFileName; }
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void genUniqueFileName(uint deviceUID, int istream = -1);
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virtual void feed(const SampleVector::const_iterator& begin, const SampleVector::const_iterator& end, bool positiveOnly) override;
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virtual void start() override;
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virtual void stop() override;
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virtual bool handleMessage(const Message& message) override;
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virtual void setFileName(const QString& fileBase) override;
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virtual bool startRecording() override;
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virtual bool stopRecording() override;
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virtual bool isRecording() const override { return m_recordOn; }
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static bool readHeader(std::ifstream& samplefile, Header& header);
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static void writeHeader(std::ofstream& samplefile, Header& header);
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// These functions guess from the filename, not contents
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static bool getCenterFrequency(QString fileName, quint64& centerFrequency);
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static bool getStartTime(QString fileName, QDateTime& startTime);
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private:
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QString m_fileBase;
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quint32 m_sampleRate;
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quint64 m_centerFrequency;
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bool m_recordOn;
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bool m_recordStart;
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std::ofstream m_sampleFile;
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QString m_curentFileName;
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quint64 m_byteCount;
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qint64 m_msShift;
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void writeHeader();
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};
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#endif // INCLUDE_WAV_FILERECORD_H
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