kopia lustrzana https://github.com/f4exb/sdrangel
234 wiersze
5.9 KiB
C++
234 wiersze
5.9 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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// //
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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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// //
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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 <string.h>
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#include <errno.h>
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#include "v4linput.h"
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#include "v4lthread.h"
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#include "v4lgui.h"
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#include "util/simpleserializer.h"
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MESSAGE_CLASS_DEFINITION(V4LInput::MsgConfigureV4L, Message)
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MESSAGE_CLASS_DEFINITION(V4LInput::MsgReportV4L, Message)
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V4LInput::Settings::Settings() :
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m_gain(0),
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m_samplerate(2500000)
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{
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}
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void V4LInput::Settings::resetToDefaults()
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{
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m_gain = 0;
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m_samplerate = 2500000;
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}
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QByteArray V4LInput::Settings::serialize() const
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{
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SimpleSerializer s(1);
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s.writeS32(1, m_gain);
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s.writeS32(2, m_samplerate);
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return s.final();
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}
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bool V4LInput::Settings::deserialize(const QByteArray& data)
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{
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SimpleDeserializer d(data);
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if(!d.isValid()) {
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resetToDefaults();
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return false;
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}
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if(d.getVersion() == 1) {
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d.readS32(1, &m_gain, 0);
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d.readS32(2, &m_samplerate, 0);
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return true;
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} else {
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resetToDefaults();
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return false;
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}
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}
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V4LInput::V4LInput(MessageQueue* msgQueueToGUI) :
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SampleSource(msgQueueToGUI),
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m_settings(),
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m_dev(0),
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m_V4LThread(NULL),
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m_deviceDescription()
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{
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}
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V4LInput::~V4LInput()
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{
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stopInput();
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}
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bool V4LInput::startInput(int device)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if(m_dev > 0)
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stopInput();
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char vendor[256];
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char product[256];
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char serial[256];
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int res;
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int numberOfGains;
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vendor[0] = '\0';
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product[0] = '\0';
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serial[0] = '\0';
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if(!m_sampleFifo.setSize(524288)) { // fraction of samplerate
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qCritical("Could not allocate SampleFifo");
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return false;
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}
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OpenSource("/dev/swradio0");
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if (fd < 0) {
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qCritical("could not open SDR");
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return false;
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}
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m_dev = device;
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/*
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if((res = rtlsdr_get_usb_strings(m_dev, vendor, product, serial)) < 0) {
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qCritical("error accessing USB device");
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goto failed;
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}
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qWarning("RTLSDRInput open: %s %s, SN: %s", vendor, product, serial);
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m_deviceDescription = QString("%1 (SN %2)").arg(product).arg(serial);
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if((res = rtlsdr_set_sample_rate(m_dev, 1536000)) < 0) {
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qCritical("could not set sample rate: %s", strerror(errno));
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goto failed;
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}
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if((res = rtlsdr_set_tuner_gain_mode(m_dev, 1)) < 0) {
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qCritical("error setting tuner gain mode");
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goto failed;
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}
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if((res = rtlsdr_set_agc_mode(m_dev, 0)) < 0) {
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qCritical("error setting agc mode");
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goto failed;
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}
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numberOfGains = rtlsdr_get_tuner_gains(m_dev, NULL);
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if(numberOfGains < 0) {
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qCritical("error getting number of gain values supported");
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goto failed;
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}
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m_gains.resize(numberOfGains);
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if(rtlsdr_get_tuner_gains(m_dev, &m_gains[0]) < 0) {
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qCritical("error getting gain values");
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goto failed;
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}
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if((res = rtlsdr_reset_buffer(m_dev)) < 0) {
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qCritical("could not reset USB EP buffers: %s", strerror(errno));
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goto failed;
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}
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*/
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if((m_V4LThread = new V4LThread(&m_sampleFifo)) == NULL) {
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qFatal("out of memory");
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goto failed;
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}
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m_V4LThread->startWork();
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mutexLocker.unlock();
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applySettings(m_generalSettings, m_settings, true);
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qDebug("V4LInput: start");
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MsgReportV4L::create(m_gains)->submit(m_guiMessageQueue);
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return true;
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failed:
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stopInput();
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return false;
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}
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void V4LInput::stopInput()
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{
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QMutexLocker mutexLocker(&m_mutex);
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if(m_V4LThread != NULL) {
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m_V4LThread->stopWork();
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delete m_V4LThread;
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m_V4LThread = NULL;
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}
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if(m_dev > 0) {
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CloseSource();
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m_dev = 0;
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}
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m_deviceDescription.clear();
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}
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const QString& V4LInput::getDeviceDescription() const
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{
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return m_deviceDescription;
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}
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int V4LInput::getSampleRate() const
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{
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int result = m_settings.m_samplerate / 4;
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if (result > 200000) result /= 4;
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return result;
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}
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quint64 V4LInput::getCenterFrequency() const
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{
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return m_generalSettings.m_centerFrequency;
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}
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bool V4LInput::handleMessage(Message* message)
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{
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if(MsgConfigureV4L::match(message)) {
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MsgConfigureV4L* conf = (MsgConfigureV4L*)message;
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if(!applySettings(conf->getGeneralSettings(), conf->getSettings(), false))
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qDebug("V4L config error");
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message->completed();
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return true;
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} else {
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return false;
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}
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}
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bool V4LInput::applySettings(const GeneralSettings& generalSettings, const Settings& settings, bool force)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if((m_generalSettings.m_centerFrequency != generalSettings.m_centerFrequency) || force) {
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m_generalSettings.m_centerFrequency = generalSettings.m_centerFrequency;
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if(m_dev > 0)
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V4LInput::set_center_freq( (double)(generalSettings.m_centerFrequency
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+ (settings.m_samplerate / 4) ));
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}
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if((m_settings.m_gain != settings.m_gain) || force) {
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m_settings.m_gain = settings.m_gain;
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if(m_dev > 0)
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V4LInput::set_tuner_gain((double)m_settings.m_gain);
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}
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if((m_settings.m_samplerate != settings.m_samplerate) || force) {
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m_settings.m_samplerate = settings.m_samplerate;
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if(m_dev > 0)
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m_V4LThread->setSamplerate((double)settings.m_samplerate);
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}
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return true;
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}
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