wfview/audioconverter.h

139 wiersze
3.2 KiB
C++

#ifndef AUDIOCONVERTER_H
#define AUDIOCONVERTER_H
#include <QObject>
#include <QByteArray>
#include <QTime>
#include <QMap>
#include <QDebug>
#include <QAudioFormat>
#include <QAudioDeviceInfo>
/* Opus and Eigen */
#ifdef Q_OS_WIN
#include "opus.h"
#include <Eigen/Eigen>
#else
#include "opus/opus.h"
#include <eigen3/Eigen/Eigen>
#endif
enum audioType {qtAudio,portAudio,rtAudio};
#include "resampler/speex_resampler.h"
#include "packettypes.h"
struct audioPacket {
quint32 seq;
QTime time;
quint16 sent;
QByteArray data;
quint8 guid[GUIDLEN];
float amplitudePeak;
float amplitudeRMS;
qreal volume = 1.0;
};
struct audioSetup {
audioType type;
QString name;
quint16 latency;
quint8 codec;
bool ulaw = false;
bool isinput;
quint32 sampleRate;
QAudioDeviceInfo port;
int portInt;
quint8 resampleQuality;
unsigned char localAFgain;
quint16 blockSize = 20; // Each 'block' of audio is 20ms long by default.
quint8 guid[GUIDLEN];
};
class audioConverter : public QObject
{
Q_OBJECT
public:
explicit audioConverter(QObject* parent = nullptr);;
~audioConverter();
public slots:
bool init(QAudioFormat inFormat, QAudioFormat outFormat, quint8 opusComplexity, quint8 resampleQuality);
bool convert(audioPacket audio);
signals:
void converted(audioPacket audio);
protected:
QAudioFormat inFormat;
QAudioFormat outFormat;
OpusEncoder* opusEncoder = Q_NULLPTR;
OpusDecoder* opusDecoder = Q_NULLPTR;
SpeexResamplerState* resampler = Q_NULLPTR;
quint8 opusComplexity;
quint8 resampleQuality = 4;
double resampleRatio=1.0; // Default resample ratio is 1:1
quint32 lastAudioSequence;
};
// Various audio handling functions declared inline
typedef Eigen::Matrix<quint8, Eigen::Dynamic, 1> VectorXuint8;
typedef Eigen::Matrix<qint8, Eigen::Dynamic, 1> VectorXint8;
typedef Eigen::Matrix<qint16, Eigen::Dynamic, 1> VectorXint16;
typedef Eigen::Matrix<qint32, Eigen::Dynamic, 1> VectorXint32;
static inline QAudioFormat toQAudioFormat(quint8 codec, quint32 sampleRate)
{
QAudioFormat format;
/*
0x01 uLaw 1ch 8bit
0x02 PCM 1ch 8bit
0x04 PCM 1ch 16bit
0x08 PCM 2ch 8bit
0x10 PCM 2ch 16bit
0x20 uLaw 2ch 8bit
0x40 Opus 1ch
0x80 Opus 2ch
*/
format.setByteOrder(QAudioFormat::LittleEndian);
format.setCodec("audio/pcm");
format.setSampleRate(sampleRate);
if (codec == 0x01 || codec == 0x20) {
/* Set sample to be what is expected by the encoder and the output of the decoder */
format.setSampleSize(16);
format.setSampleType(QAudioFormat::SignedInt);
format.setCodec("audio/PCMU");
}
if (codec == 0x02 || codec == 0x08) {
format.setSampleSize(8);
format.setSampleType(QAudioFormat::UnSignedInt);
}
if (codec == 0x08 || codec == 0x10 || codec == 0x20 || codec == 0x80) {
format.setChannelCount(2);
} else {
format.setChannelCount(1);
}
if (codec == 0x04 || codec == 0x10) {
format.setSampleSize(16);
format.setSampleType(QAudioFormat::SignedInt);
}
if (codec == 0x40 || codec == 0x80) {
format.setSampleSize(32);
format.setSampleType(QAudioFormat::Float);
format.setCodec("audio/opus");
}
return format;
}
#endif