mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-18 06:11:46 -05:00
258 lines
8.6 KiB
C++
258 lines
8.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2017 Edouard Griffiths, F4EXB //
|
|
// //
|
|
// This program is free software; you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation as version 3 of the License, or //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef PLUGINS_SAMPLESINK_SDRDAEMONSINK_UDPSINKFEC_H_
|
|
#define PLUGINS_SAMPLESINK_SDRDAEMONSINK_UDPSINKFEC_H_
|
|
|
|
#include <string.h>
|
|
#include <cstddef>
|
|
|
|
#include <QObject>
|
|
#include <QHostAddress>
|
|
#include <QString>
|
|
#include <QThread>
|
|
|
|
#include "cm256.h"
|
|
|
|
#include "dsp/dsptypes.h"
|
|
#include "util/CRC64.h"
|
|
#include "util/messagequeue.h"
|
|
#include "util/message.h"
|
|
|
|
#include "UDPSocket.h"
|
|
|
|
class UDPSinkFECWorker;
|
|
|
|
class UDPSinkFEC : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
static const uint32_t m_udpSize = 512; //!< Size of UDP block in number of bytes
|
|
static const uint32_t m_nbOriginalBlocks = 128; //!< Number of original blocks in a protected block sequence
|
|
#pragma pack(push, 1)
|
|
struct MetaDataFEC
|
|
{
|
|
uint32_t m_centerFrequency; //!< 4 center frequency in kHz
|
|
uint32_t m_sampleRate; //!< 8 sample rate in Hz
|
|
uint8_t m_sampleBytes; //!< 9 MSB(4): indicators, LSB(4) number of bytes per sample
|
|
uint8_t m_sampleBits; //!< 10 number of effective bits per sample
|
|
uint8_t m_nbOriginalBlocks; //!< 11 number of blocks with original (protected) data
|
|
uint8_t m_nbFECBlocks; //!< 12 number of blocks carrying FEC
|
|
uint32_t m_tv_sec; //!< 16 seconds of timestamp at start time of super-frame processing
|
|
uint32_t m_tv_usec; //!< 20 microseconds of timestamp at start time of super-frame processing
|
|
uint32_t m_crc32; //!< 24 CRC32 of the above
|
|
|
|
bool operator==(const MetaDataFEC& rhs)
|
|
{
|
|
return (memcmp((const void *) this, (const void *) &rhs, 12) == 0); // Only the 12 first bytes are relevant
|
|
}
|
|
|
|
void init()
|
|
{
|
|
memset((void *) this, 0, sizeof(MetaDataFEC));
|
|
m_nbFECBlocks = -1;
|
|
}
|
|
};
|
|
|
|
struct Header
|
|
{
|
|
uint16_t frameIndex;
|
|
uint8_t blockIndex;
|
|
uint8_t filler;
|
|
};
|
|
|
|
static const int samplesPerBlock = (m_udpSize - sizeof(Header)) / sizeof(Sample);
|
|
|
|
struct ProtectedBlock
|
|
{
|
|
Sample m_samples[samplesPerBlock];
|
|
};
|
|
|
|
struct SuperBlock
|
|
{
|
|
Header header;
|
|
ProtectedBlock protectedBlock;
|
|
};
|
|
#pragma pack(pop)
|
|
|
|
/**
|
|
* Construct UDP sink
|
|
*/
|
|
UDPSinkFEC();
|
|
|
|
/** Destroy UDP sink */
|
|
~UDPSinkFEC();
|
|
|
|
/**
|
|
* Write IQ samples
|
|
*/
|
|
void write(const SampleVector::iterator& begin, uint32_t sampleChunkSize);
|
|
|
|
/** Return the last error, or return an empty string if there is no error. */
|
|
std::string error()
|
|
{
|
|
std::string ret(m_error);
|
|
m_error.clear();
|
|
return ret;
|
|
}
|
|
|
|
/** Set center frequency given in Hz */
|
|
void setCenterFrequency(uint64_t centerFrequency) { m_centerFrequency = centerFrequency / 1000; }
|
|
|
|
/** Set sample rate given in Hz */
|
|
void setSampleRate(uint32_t sampleRate) { m_sampleRate = sampleRate; }
|
|
|
|
void setSampleBytes(uint8_t sampleBytes) { m_sampleBytes = (sampleBytes & 0x0F) + (m_sampleBytes & 0xF0); }
|
|
void setSampleBits(uint8_t sampleBits) { m_sampleBits = sampleBits; }
|
|
|
|
void setNbBlocksFEC(uint32_t nbBlocksFEC);
|
|
void setTxDelay(uint32_t txDelay);
|
|
void setRemoteAddress(const QString& address, uint16_t port);
|
|
|
|
/** Return true if the stream is OK, return false if there is an error. */
|
|
operator bool() const
|
|
{
|
|
return m_error.empty();
|
|
}
|
|
|
|
private:
|
|
std::string m_error;
|
|
|
|
uint32_t m_centerFrequency; //!< center frequency in kHz
|
|
uint32_t m_sampleRate; //!< sample rate in Hz
|
|
uint8_t m_sampleBytes; //!< number of bytes per sample
|
|
uint8_t m_sampleBits; //!< number of effective bits per sample
|
|
uint32_t m_nbSamples; //!< total number of samples sent int the last frame
|
|
|
|
QHostAddress m_ownAddress;
|
|
|
|
CRC64 m_crc64;
|
|
uint8_t* m_bufMeta;
|
|
uint8_t* m_buf;
|
|
|
|
MetaDataFEC m_currentMetaFEC; //!< Meta data for current frame
|
|
uint32_t m_nbBlocksFEC; //!< Variable number of FEC blocks
|
|
uint32_t m_txDelay; //!< Delay in microseconds (usleep) between each sending of an UDP datagram
|
|
SuperBlock m_txBlocks[4][256]; //!< UDP blocks to send with original data + FEC
|
|
SuperBlock m_superBlock; //!< current super block being built
|
|
int m_txBlockIndex; //!< Current index in blocks to transmit in the Tx row
|
|
int m_txBlocksIndex; //!< Current index of Tx blocks row
|
|
uint16_t m_frameCount; //!< transmission frame count
|
|
int m_sampleIndex; //!< Current sample index in protected block data
|
|
|
|
QThread *m_udpThread;
|
|
UDPSinkFECWorker *m_udpWorker;
|
|
};
|
|
|
|
|
|
class UDPSinkFECWorker : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
class MsgUDPFECEncodeAndSend : public Message
|
|
{
|
|
MESSAGE_CLASS_DECLARATION
|
|
public:
|
|
UDPSinkFEC::SuperBlock *getTxBlocks() const { return m_txBlockx; }
|
|
uint32_t getNbBlocsFEC() const { return m_nbBlocksFEC; }
|
|
uint32_t getTxDelay() const { return m_txDelay; }
|
|
uint16_t getFrameIndex() const { return m_frameIndex; }
|
|
|
|
static MsgUDPFECEncodeAndSend* create(
|
|
UDPSinkFEC::SuperBlock *txBlocks,
|
|
uint32_t nbBlocksFEC,
|
|
uint32_t txDelay,
|
|
uint16_t frameIndex)
|
|
{
|
|
return new MsgUDPFECEncodeAndSend(txBlocks, nbBlocksFEC, txDelay, frameIndex);
|
|
}
|
|
|
|
private:
|
|
UDPSinkFEC::SuperBlock *m_txBlockx;
|
|
uint32_t m_nbBlocksFEC;
|
|
uint32_t m_txDelay;
|
|
uint16_t m_frameIndex;
|
|
|
|
MsgUDPFECEncodeAndSend(
|
|
UDPSinkFEC::SuperBlock *txBlocks,
|
|
uint32_t nbBlocksFEC,
|
|
uint32_t txDelay,
|
|
uint16_t frameIndex) :
|
|
m_txBlockx(txBlocks),
|
|
m_nbBlocksFEC(nbBlocksFEC),
|
|
m_txDelay(txDelay),
|
|
m_frameIndex(frameIndex)
|
|
{}
|
|
};
|
|
|
|
class MsgConfigureRemoteAddress : public Message
|
|
{
|
|
MESSAGE_CLASS_DECLARATION
|
|
public:
|
|
const QString& getAddress() const { return m_address; }
|
|
uint16_t getPort() const { return m_port; }
|
|
|
|
static MsgConfigureRemoteAddress* create(const QString& address, uint16_t port)
|
|
{
|
|
return new MsgConfigureRemoteAddress(address, port);
|
|
}
|
|
|
|
private:
|
|
QString m_address;
|
|
uint16_t m_port;
|
|
|
|
MsgConfigureRemoteAddress(const QString& address, uint16_t port) :
|
|
m_address(address),
|
|
m_port(port)
|
|
{}
|
|
};
|
|
|
|
UDPSinkFECWorker();
|
|
~UDPSinkFECWorker();
|
|
|
|
void pushTxFrame(UDPSinkFEC::SuperBlock *txBlocks,
|
|
uint32_t nbBlocksFEC,
|
|
uint32_t txDelay,
|
|
uint16_t frameIndex);
|
|
void setRemoteAddress(const QString& address, uint16_t port);
|
|
void stop();
|
|
|
|
MessageQueue m_inputMessageQueue; //!< Queue for asynchronous inbound communication
|
|
|
|
signals:
|
|
void finished();
|
|
|
|
public slots:
|
|
void process();
|
|
|
|
private slots:
|
|
void handleInputMessages();
|
|
|
|
private:
|
|
void encodeAndTransmit(UDPSinkFEC::SuperBlock *txBlockx, uint16_t frameIndex, uint32_t nbBlocksFEC, uint32_t txDelay);
|
|
|
|
bool m_running;
|
|
CM256 m_cm256; //!< CM256 library object
|
|
bool m_cm256Valid; //!< true if CM256 library is initialized correctly
|
|
UDPSocket m_socket;
|
|
QString m_remoteAddress;
|
|
uint16_t m_remotePort;
|
|
};
|
|
|
|
|
|
|
|
#endif /* PLUGINS_SAMPLESINK_SDRDAEMONSINK_UDPSINKFEC_H_ */
|