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wavheader.h
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wavheader.h
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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)MIT
*
* Flacon - audio File Encoder
* https://github.com/flacon/flacon
*
* Copyright: 2022
* Alexander Sokoloff <sokoloff.a@gmail.com>
*
* MIT License
*
* Copyright (c) 2022 Alexander Sokoloff
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* END_COMMON_COPYRIGHT_HEADER */
#ifndef WAVHEADER_H
#define WAVHEADER_H
#include <cstdint>
#include <fstream>
#include <vector>
using ByteArray = std::vector<uint8_t>;
using WavHeaderError = std::runtime_error;
/************************************************
* Info for format tags can be found at:
* http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html
************************************************/
class WavHeader
{
public:
enum Format {
Format_Unknown = 0x0000,
Format_PCM = 0x0001,
Format_ADPCM = 0x0002,
Format_IEEE_FLOAT = 0x0003,
Format_ALAW = 0x0006,
Format_MULAW = 0x0007,
Format_OKI_ADPCM = 0x0010,
Format_IMA_ADPCM = 0x0011,
Format_DIGISTD = 0x0015,
Format_DIGIFIX = 0x0016,
Format_DOLBY_AC2 = 0x0030,
Format_GSM610 = 0x0031,
Format_ROCKWELL_ADPCM = 0x003b,
Format_ROCKWELL_DIGITALK = 0x003c,
Format_G721_ADPCM = 0x0040,
Format_G728_CELP = 0x0041,
Format_MPEG = 0x0050,
Format_MPEGLAYER3 = 0x0055,
Format_G726_ADPCM = 0x0064,
Format_G722_ADPCM = 0x0065,
Format_Extensible = 0xFFFE,
};
enum Quality {
Quality_Stereo_CD = 2 * 16 * 44100,
Quality_Stereo_24_96 = 2 * 24 * 96000,
Quality_Stereo_24_192 = 2 * 24 * 192000
};
typedef char SubFormat[16];
WavHeader() = default;
explicit WavHeader(std::istream *stream) noexcept(false);
WavHeader(const WavHeader &other) = default;
WavHeader &operator=(const WavHeader &other) = default;
/// Duration of audio in milliseconds.
uint64_t duration() const;
// QByteArray toByteArray() const;
// QByteArray toLegacyWav() const;
void resizeData(uint32_t dataSize);
static uint32_t bytesPerSecond(Quality quality);
uint32_t bytesPerSecond();
uint64_t fileSize() const { return mFileSize; }
Format format() const { return mFormat; }
uint16_t numChannels() const { return mNumChannels; }
uint32_t sampleRate() const { return mSampleRate; }
uint32_t byteRate() const { return mByteRate; }
uint16_t blockAlign() const { return mBlockAlign; }
uint16_t bitsPerSample() const { return mBitsPerSample; }
uint16_t validBitsPerSample() const { return mValidBitsPerSample; }
uint32_t channelMask() const { return mChannelMask; }
uint64_t dataSize() const { return mDataSize; }
uint64_t dataStartPos() const { return mDataStartPos; }
bool isCdQuality() const;
bool is64Bit() const { return m64Bit; }
protected:
enum FmtChunkSize {
FmtChunkMin = 16,
FmtChunkMid = 18,
FmtChunkExt = 40,
};
bool m64Bit = false;
uint64_t mFileSize = 0;
FmtChunkSize mFmtSize = FmtChunkMin;
Format mFormat = WavHeader::Format_Unknown;
uint16_t mNumChannels = 0;
uint32_t mSampleRate = 0;
uint32_t mByteRate = 0;
uint16_t mBlockAlign = 0;
uint16_t mBitsPerSample = 0;
uint16_t mExtSize = 0; // Size of the extension:
uint16_t mValidBitsPerSample = 0; // at most 8*M
uint32_t mChannelMask = 0; // Speaker position mask
ByteArray mSubFormat = { 0 }; // GUID (first two bytes are the data format code)
uint64_t mDataSize = 0;
uint64_t mDataStartPos = 0;
ByteArray mOtherCunks;
private:
void loadFmtChunk(std::istream *stream, const uint32_t chunkSize);
void readWavHeader(std::istream *stream);
void readWave64Header(std::istream *stream);
ByteArray wavToByteArray(bool keepOtherChunks) const;
ByteArray wave64ToByteArray() const;
};
#endif // WAVHEADER_H