Add USRP device support.

2026-06-01 13:47:01 -04:00 · 2020-10-02 22:45:28 +01:00
parent ad55211abb
commit d4aa5d75b5
427 changed files with 10621 additions and 378 deletions
@@ -0,0 +1,185 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2017 Edouard Griffiths, F4EXB                                   //
+// Copyright (C) 2020 Jon Beniston, M7RCE                                        //
+//                                                                               //
+// 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                  //
+// (at your option) any later version.                                           //
+//                                                                               //
+// 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/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <errno.h>
+#include <algorithm>
+
+#include <QDebug>
+
+#include "dsp/samplesourcefifo.h"
+
+#include "usrpoutputthread.h"
+#include "usrpoutputsettings.h"
+
+USRPOutputThread::USRPOutputThread(uhd::tx_streamer::sptr stream, SampleSourceFifo* sampleFifo, QObject* parent) :
+    QThread(parent),
+    m_running(false),
+    m_stream(stream),
+    m_sampleFifo(sampleFifo),
+    m_log2Interp(0)
+{
+    std::fill(m_buf, m_buf + 2*DeviceUSRP::blockSize, 0);
+}
+
+USRPOutputThread::~USRPOutputThread()
+{
+    stopWork();
+}
+
+void USRPOutputThread::startWork()
+{
+    if (m_running) return; // return if running already
+
+    // Reset stats
+    m_packets = 0;
+    m_underflows = 0;
+    m_droppedPackets = 0;
+
+    m_startWaitMutex.lock();
+    start();
+    while(!m_running)
+        m_startWaiter.wait(&m_startWaitMutex, 100);
+    m_startWaitMutex.unlock();
+}
+
+void USRPOutputThread::stopWork()
+{
+    uhd::async_metadata_t md;
+
+    if (!m_running) return; // return if not running
+
+    m_running = false;
+    wait();
+
+    // Get message indicating underflow, so it doesn't appear if we restart
+    m_stream->recv_async_msg(md);
+
+    qDebug("USRPOutputThread::stopWork: stream stopped");
+}
+
+void USRPOutputThread::setLog2Interpolation(unsigned int log2_interp)
+{
+    m_log2Interp = log2_interp;
+}
+
+void USRPOutputThread::run()
+{
+    uhd::tx_metadata_t md;
+    md.start_of_burst = false;
+    md.end_of_burst   = false;
+
+    m_running = true;
+    m_startWaiter.wakeAll();
+
+    qDebug("USRPOutputThread::run");
+
+    while (m_running)
+    {
+        callback(m_buf, DeviceUSRP::blockSize);
+
+        try
+        {
+            const size_t samples_sent = m_stream->send(m_buf, DeviceUSRP::blockSize, md);
+            m_packets++;
+            if (samples_sent != DeviceUSRP::blockSize)
+            {
+                qDebug("USRPOutputThread::run written %d/%d samples", samples_sent, DeviceUSRP::blockSize);
+            }
+        }
+        catch (std::exception& e)
+        {
+            qDebug() << "USRPOutputThread::run: exception: " << e.what();
+        }
+    }
+
+    m_running = false;
+}
+
+//  Interpolate according to specified log2 (ex: log2=4 => decim=16)
+void USRPOutputThread::callback(qint16* buf, qint32 len)
+{
+    SampleVector& data = m_sampleFifo->getData();
+    unsigned int iPart1Begin, iPart1End, iPart2Begin, iPart2End;
+    m_sampleFifo->read(len/(1<<m_log2Interp), iPart1Begin, iPart1End, iPart2Begin, iPart2End);
+
+    if (iPart1Begin != iPart1End) {
+        callbackPart(buf, data, iPart1Begin, iPart1End);
+    }
+
+    unsigned int shift = (iPart1End - iPart1Begin)*(1<<m_log2Interp);
+
+    if (iPart2Begin != iPart2End) {
+        callbackPart(buf + 2*shift, data, iPart2Begin, iPart2End);
+    }
+}
+
+void USRPOutputThread::callbackPart(qint16* buf, SampleVector& data, unsigned int iBegin, unsigned int iEnd)
+{
+    SampleVector::iterator beginRead = data.begin() + iBegin;
+    int len = 2*(iEnd - iBegin)*(1<<m_log2Interp);
+
+    if (m_log2Interp == 0)
+    {
+        m_interpolators.interpolate1(&beginRead, buf, len);
+    }
+    else
+    {
+        switch (m_log2Interp)
+        {
+        case 1:
+            m_interpolators.interpolate2_cen(&beginRead, buf, len);
+            break;
+        case 2:
+            m_interpolators.interpolate4_cen(&beginRead, buf, len);
+            break;
+        case 3:
+            m_interpolators.interpolate8_cen(&beginRead, buf, len);
+            break;
+        case 4:
+            m_interpolators.interpolate16_cen(&beginRead, buf, len);
+            break;
+        case 5:
+            m_interpolators.interpolate32_cen(&beginRead, buf, len);
+            break;
+        case 6:
+            m_interpolators.interpolate64_cen(&beginRead, buf, len);
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+void USRPOutputThread::getStreamStatus(bool& active, quint32& underflows, quint32& droppedPackets)
+{
+    uhd::async_metadata_t md;
+
+    if (m_stream->recv_async_msg(md))
+    {
+        if ((md.event_code == uhd::async_metadata_t::event_code_t::EVENT_CODE_UNDERFLOW)
+            || (md.event_code == uhd::async_metadata_t::event_code_t::EVENT_CODE_UNDERFLOW_IN_PACKET))
+            m_underflows++;
+        if ((md.event_code == uhd::async_metadata_t::event_code_t::EVENT_CODE_SEQ_ERROR)
+            || (md.event_code == uhd::async_metadata_t::event_code_t::EVENT_CODE_SEQ_ERROR_IN_BURST))
+            m_droppedPackets++;
+    }
+    //qDebug() << "USRPOutputThread::getStreamStatus " << m_packets << " " << m_underflows << " " << m_droppedPackets;
+    active = m_packets > 0;
+    underflows = m_underflows;
+    droppedPackets = m_droppedPackets;
+}