mirror of
https://github.com/f4exb/sdrangel.git
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315 lines
7.2 KiB
C++
315 lines
7.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2016, 2018-2022 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// Copyright (C) 2022 Jiří Pinkava <jiri.pinkava@rossum.ai> //
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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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#include "datafifo.h"
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void DataFifo::create(unsigned int s)
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{
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m_size = 0;
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m_fill = 0;
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m_head = 0;
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m_tail = 0;
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m_data.resize(s);
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m_size = m_data.size();
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}
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void DataFifo::reset()
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{
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QMutexLocker mutexLocker(&m_mutex);
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m_suppressed = -1;
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m_fill = 0;
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m_head = 0;
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m_tail = 0;
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}
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DataFifo::DataFifo(QObject* parent) :
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QObject(parent),
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m_data(),
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m_currentDataType(DataTypeI16)
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{
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setObjectName("DataFifo");
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m_suppressed = -1;
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m_size = 0;
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m_fill = 0;
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m_head = 0;
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m_tail = 0;
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}
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DataFifo::DataFifo(int size, QObject* parent) :
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QObject(parent),
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m_data(),
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m_currentDataType(DataTypeI16)
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{
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setObjectName("DataFifo");
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m_suppressed = -1;
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create(size);
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}
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DataFifo::DataFifo(const DataFifo& other) :
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QObject(other.parent()),
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m_data(other.m_data),
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m_currentDataType(DataTypeI16)
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{
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setObjectName("DataFifo");
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m_suppressed = -1;
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m_size = m_data.size();
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m_fill = 0;
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m_head = 0;
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m_tail = 0;
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}
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DataFifo::~DataFifo()
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{
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QMutexLocker mutexLocker(&m_mutex);
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m_size = 0;
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}
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bool DataFifo::setSize(int size)
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{
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QMutexLocker mutexLocker(&m_mutex);
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create(size);
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return m_data.size() == size;
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}
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unsigned int DataFifo::write(const quint8* data, unsigned int count, DataType dataType)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if (dataType != m_currentDataType)
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{
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m_suppressed = -1;
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m_fill = 0;
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m_head = 0;
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m_tail = 0;
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m_currentDataType = dataType;
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}
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unsigned int total;
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unsigned int remaining;
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unsigned int len;
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const quint8* begin = (const quint8*) data;
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//count /= sizeof(Sample);
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total = std::min(count, m_size - m_fill);
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if (total < count)
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{
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if (m_suppressed < 0)
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{
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m_suppressed = 0;
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m_msgRateTimer.start();
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qCritical("DataFifo::write: overflow - dropping %u samples (size=%u)", count - total, m_size);
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}
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else
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{
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if (m_msgRateTimer.elapsed() > 2500)
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{
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qCritical("DataFifo::write: %u messages dropped", m_suppressed);
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qCritical("DataFifo::write: overflow - dropping %u samples (size=%u)", count - total, m_size);
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m_suppressed = -1;
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}
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else
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{
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m_suppressed++;
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}
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}
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}
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remaining = total;
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while (remaining > 0)
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{
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len = std::min(remaining, m_size - m_tail);
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std::copy(begin, begin + len, m_data.begin() + m_tail);
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m_tail += len;
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m_tail %= m_size;
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m_fill += len;
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begin += len;
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remaining -= len;
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}
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if (m_fill > 0) {
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emit dataReady();
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}
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return total;
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}
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unsigned int DataFifo::write(QByteArray::const_iterator begin, QByteArray::const_iterator end, DataType dataType)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if (dataType != m_currentDataType)
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{
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m_suppressed = -1;
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m_fill = 0;
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m_head = 0;
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m_tail = 0;
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m_currentDataType = dataType;
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}
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unsigned int count = end - begin;
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unsigned int total;
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unsigned int remaining;
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unsigned int len;
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total = std::min(count, m_size - m_fill);
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if (total < count)
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{
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if (m_suppressed < 0)
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{
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m_suppressed = 0;
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m_msgRateTimer.start();
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qCritical("DataFifo::write: overflow - dropping %u samples", count - total);
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}
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else
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{
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if (m_msgRateTimer.elapsed() > 2500)
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{
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qCritical("DataFifo::write: %u messages dropped", m_suppressed);
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qCritical("DataFifo::write: overflow - dropping %u samples", count - total);
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m_suppressed = -1;
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}
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else
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{
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m_suppressed++;
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}
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}
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}
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remaining = total;
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while (remaining > 0)
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{
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len = std::min(remaining, m_size - m_tail);
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std::copy(begin, begin + len, m_data.begin() + m_tail);
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m_tail += len;
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m_tail %= m_size;
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m_fill += len;
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begin += len;
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remaining -= len;
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}
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if (m_fill > 0) {
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emit dataReady();
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}
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return total;
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}
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unsigned int DataFifo::read(QByteArray::iterator begin, QByteArray::iterator end, DataType& dataType)
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{
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QMutexLocker mutexLocker(&m_mutex);
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dataType = m_currentDataType;
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unsigned int count = end - begin;
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unsigned int total;
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unsigned int remaining;
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unsigned int len;
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total = std::min(count, m_fill);
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if (total < count) {
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qCritical("DataFifo::read: underflow - missing %u samples", count - total);
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}
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remaining = total;
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while (remaining > 0)
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{
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len = std::min(remaining, m_size - m_head);
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std::copy(m_data.begin() + m_head, m_data.begin() + m_head + len, begin);
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m_head += len;
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m_head %= m_size;
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m_fill -= len;
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begin += len;
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remaining -= len;
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}
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return total;
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}
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unsigned int DataFifo::readBegin(unsigned int count,
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QByteArray::iterator* part1Begin, QByteArray::iterator* part1End,
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QByteArray::iterator* part2Begin, QByteArray::iterator* part2End,
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DataType& dataType)
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{
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QMutexLocker mutexLocker(&m_mutex);
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dataType = m_currentDataType;
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unsigned int total;
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unsigned int remaining;
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unsigned int len;
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unsigned int head = m_head;
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total = std::min(count, m_fill);
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if (total < count) {
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qCritical("DataFifo::readBegin: underflow - missing %u samples", count - total);
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}
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remaining = total;
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if (remaining > 0)
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{
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len = std::min(remaining, m_size - head);
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*part1Begin = m_data.begin() + head;
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*part1End = m_data.begin() + head + len;
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head += len;
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head %= m_size;
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remaining -= len;
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}
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else
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{
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*part1Begin = m_data.end();
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*part1End = m_data.end();
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}
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if (remaining > 0)
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{
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len = std::min(remaining, m_size - head);
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*part2Begin = m_data.begin() + head;
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*part2End = m_data.begin() + head + len;
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}
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else
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{
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*part2Begin = m_data.end();
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*part2End = m_data.end();
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}
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return total;
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}
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unsigned int DataFifo::readCommit(unsigned int count)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if (count > m_fill)
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{
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qCritical("DataFifo::readCommit: cannot commit more than available samples");
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count = m_fill;
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}
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m_head = (m_head + count) % m_size;
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m_fill -= count;
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return count;
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}
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