mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-09-27 15:26:33 -04:00
Try Threading.
This commit is contained in:
John Greb
parent
1a46bf391e
commit
f78b2eebaf
@ -26,15 +26,13 @@ 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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m_gain(0)
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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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@ -73,6 +71,16 @@ V4LInput::V4LInput(MessageQueue* msgQueueToGUI) :
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{
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}
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bool V4LThread::Init()
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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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return true;
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}
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V4LInput::~V4LInput()
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{
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stopInput();
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@ -96,62 +104,18 @@ bool V4LInput::startInput(int device)
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serial[0] = '\0';
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if(!m_sampleFifo.setSize(524288)) { // fraction of samplerate
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if(!m_sampleFifo.setSize(4096*16)) {
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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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//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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@ -159,7 +123,6 @@ bool V4LInput::startInput(int device)
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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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@ -172,10 +135,6 @@ void V4LInput::stopInput()
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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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@ -187,7 +146,6 @@ const QString& V4LInput::getDeviceDescription() const
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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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@ -216,18 +174,13 @@ bool V4LInput::applySettings(const GeneralSettings& generalSettings, const Setti
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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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m_V4LThread->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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m_V4LThread->set_tuner_gain((double)m_settings.m_gain);
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}
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return true;
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}
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@ -94,22 +94,7 @@ public:
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quint64 getCenterFrequency() const;
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bool handleMessage(Message* message);
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void OpenSource(const char *filename);
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void CloseSource();
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void set_sample_rate(double samp_rate);
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void set_center_freq(double freq);
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void set_bandwidth(double bandwidth);
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void set_tuner_gain(double gain);
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int work(int noutput_items, qint16* output_items);
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private:
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int fd;
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quint32 pixelformat;
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struct v4l_buffer *buffers;
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unsigned int n_buffers;
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void *recebuf_ptr;
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unsigned int recebuf_len;
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unsigned int recebuf_mmap_index;
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QMutex m_mutex;
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Settings m_settings;
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int m_dev;
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@ -18,6 +18,7 @@
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*/
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#include "v4linput.h"
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#include "v4lthread.h"
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#include <string.h>
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#include <errno.h>
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#include <stdint.h>
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@ -60,7 +61,7 @@ static void xioctl(int fh, unsigned long int request, void *arg)
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}
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void
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V4LInput::OpenSource(const char *filename)
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V4LThread::OpenSource(const char *filename)
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{
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struct v4l2_format fmt;
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struct v4l2_buffer buf;
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@ -124,7 +125,7 @@ V4LInput::OpenSource(const char *filename)
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}
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void
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V4LInput::CloseSource()
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V4LThread::CloseSource()
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{
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unsigned int i;
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enum v4l2_buf_type type;
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@ -140,7 +141,7 @@ V4LInput::CloseSource()
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}
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void
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V4LInput::set_sample_rate(double samp_rate)
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V4LThread::set_sample_rate(double samp_rate)
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{
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struct v4l2_frequency frequency;
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@ -156,7 +157,7 @@ V4LInput::set_sample_rate(double samp_rate)
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}
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void
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V4LInput::set_center_freq(double freq)
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V4LThread::set_center_freq(double freq)
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{
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struct v4l2_frequency frequency;
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@ -172,7 +173,7 @@ V4LInput::set_center_freq(double freq)
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}
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void
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V4LInput::set_bandwidth(double bandwidth)
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V4LThread::set_bandwidth(double bandwidth)
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{
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struct v4l2_ext_controls ext_ctrls;
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struct v4l2_ext_control ext_ctrl;
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@ -193,7 +194,7 @@ V4LInput::set_bandwidth(double bandwidth)
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}
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void
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V4LInput::set_tuner_gain(double gain)
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V4LThread::set_tuner_gain(double gain)
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{
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struct v4l2_ext_controls ext_ctrls;
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struct v4l2_ext_control ext_ctrl;
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@ -214,44 +215,41 @@ V4LInput::set_tuner_gain(double gain)
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}
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int
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V4LInput::work(int noutput_items, int16_t* output_items)
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{
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//complex *out = (complex *) output_items;
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int ret;
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struct timeval tv;
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struct v4l2_buffer buf;
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fd_set fds;
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unsigned int i, items = 0;
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float *fptr = (float *) output_items;
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V4LThread::work(int noutput_items)
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{
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int ret;
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struct timeval tv;
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struct v4l2_buffer buf;
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fd_set fds;
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unsigned int i, items = 0;
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qint16 xreal, yimag;
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uint8_t* b;
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SampleVector::iterator it;
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process_buf:
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/* process received mmap buffer */
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uint8_t *u8src = (uint8_t *) recebuf_ptr;
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uint16_t *u16src = (uint16_t *) recebuf_ptr;
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while (recebuf_len) {
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if (pixelformat == V4L2_PIX_FMT_SDR_U8) {
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*fptr++ = (*u8src++ - 127.5f) / 127.5f;
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*fptr++ = (*u8src++ - 127.5f) / 127.5f;
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recebuf_len -= 2;
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items++;
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recebuf_ptr = u8src;
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} else if (pixelformat == V4L2_PIX_FMT_SDR_U16LE) {
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*fptr++ = (*u16src++ - 32767.5f) / 32767.5f;
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*fptr++ = (*u16src++ - 32767.5f) / 32767.5f;
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recebuf_len -= 4;
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items++;
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recebuf_ptr = u16src;
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} else {
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recebuf_len = 0;
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}
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if (items == noutput_items)
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break;
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int pos = 0;
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// in is 4*8bit*2(IQ), 8 bytes; out is 1*16bit*2(IQ) , 4bytes
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it = m_convertBuffer.begin();
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if (recebuf_len > 0) {
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b = (uint8_t *) recebuf_ptr;
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int len = noutput_items * 8;
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if (len > recebuf_len)
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len = recebuf_len;
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for (pos = 0; pos < len - 7; pos += 8) {
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xreal = b[pos+0] - b[pos+3] + b[pos+7] - b[pos+4];
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yimag = b[pos+1] - b[pos+5] + b[pos+2] - b[pos+6];
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Sample s( xreal << 3, yimag << 3 );
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*it = s;
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it++;
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}
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/* enqueue mmap buf after it is processed */
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if (recebuf_len == 0 && items != 0) {
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m_sampleFifo->write(m_convertBuffer.begin(), it);
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recebuf_len -= pos;
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recebuf_ptr = (void*)(b + pos);
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}
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// return now if there is still data in buffer, else free buffer and get another.
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if (recebuf_len >= 8)
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return pos / 8;
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{ // frre buffer, if there was one.
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if (pos > 0) {
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CLEAR(buf);
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buf.type = V4L2_BUF_TYPE_SDR_CAPTURE;
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buf.memory = V4L2_MEMORY_MMAP;
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@ -259,10 +257,6 @@ process_buf:
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xioctl(fd, VIDIOC_QBUF, &buf);
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}
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/* signal DSP we have some samples to offer */
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if (items)
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return items;
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/* Read data from device */
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do {
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FD_ZERO(&fds);
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@ -289,10 +283,6 @@ process_buf:
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recebuf_ptr = buffers[buf.index].start;
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recebuf_len = buf.bytesused;
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recebuf_mmap_index = buf.index;
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/* FIXME: */
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goto process_buf;
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// Tell runtime system how many output items we produced.
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return 0;
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}
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return pos / 8;
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}
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@ -20,8 +20,6 @@
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#include "v4lthread.h"
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#include "dsp/samplefifo.h"
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#define BLOCKSIZE 16384
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V4LThread::V4LThread(SampleFifo* sampleFifo, QObject* parent) :
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QThread(parent),
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m_running(false),
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@ -29,158 +27,25 @@ V4LThread::V4LThread(SampleFifo* sampleFifo, QObject* parent) :
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m_convertBuffer(BLOCKSIZE),
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m_sampleFifo(sampleFifo)
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{
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m_samplerate = 2500000;
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}
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V4LThread::~V4LThread()
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{
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stopWork();
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}
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void V4LThread::startWork()
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{
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m_startWaitMutex.lock();
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start();
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while(!m_running)
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m_startWaiter.wait(&m_startWaitMutex, 100);
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m_startWaitMutex.unlock();
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}
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void V4LThread::stopWork()
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{
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m_running = false;
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wait();
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}
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void V4LThread::setSamplerate(int samplerate)
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{
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m_samplerate = samplerate;
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}
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void V4LThread::run()
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{
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int res;
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if (! Init() )
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return;
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m_running = true;
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m_startWaiter.wakeAll();
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/*
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while(m_running) {
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if((res = rtlsdr_read_async(m_dev, &V4LThread::callbackHelper, this, 32, BLOCKSIZE)) < 0) {
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qCritical("V4LThread: async error: %s", strerror(errno));
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break;
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}
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work(BLOCKSIZE);
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}
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*/
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m_running = false;
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CloseSource();
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}
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void V4LThread::decimate2(SampleVector::iterator* it, const quint8* buf, qint32 len)
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{
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qint16 xreal, yimag;
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for (int pos = 0; pos < len + 7; pos += 8) {
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xreal = buf[pos+0] - buf[pos+3];
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yimag = buf[pos+1] + buf[pos+2] - 255;
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Sample s( xreal << 3, yimag << 3 );
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**it = s;
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(*it)++;
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xreal = buf[pos+7] - buf[pos+4];
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yimag = 255 - buf[pos+5] - buf[pos+6];
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Sample t( xreal << 3, yimag << 3 );
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**it = t;
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(*it)++;
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}
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}
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void V4LThread::decimate4(SampleVector::iterator* it, const quint8* buf, qint32 len)
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{
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qint16 xreal, yimag;
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for (int pos = 0; pos < len + 7; pos += 8) {
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xreal = buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4];
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yimag = buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6];
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Sample s( xreal << 3, yimag << 3 );
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**it = s;
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(*it)++;
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}
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}
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void V4LThread::decimate8(SampleVector::iterator* it, const quint8* buf, qint32 len)
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{
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qint16 xreal, yimag;
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for (int pos = 0; pos < len + 15; pos += 8) {
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xreal = buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4];
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yimag = buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6];
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pos += 8;
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xreal += buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4];
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yimag += buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6];
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Sample s( xreal << 3, yimag << 3 );
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**it = s;
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(*it)++;
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}
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}
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void V4LThread::decimate16(SampleVector::iterator* it, const quint8* buf, qint32 len)
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{
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// Offset tuning: 4x downsample and rotate, then
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// downsample 4x more. [ rotate: 0, 1, -3, 2, -4, -5, 7, -6]
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qint16 xreal, yimag;
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for (int step = 0; step < len - 31; step +=32) {
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xreal = yimag = 0;
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for (int pos = step; pos < step + 32; pos += 8) {
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xreal += buf[pos+0] - buf[pos+3] + buf[pos+7] - buf[pos+4];
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yimag += buf[pos+1] - buf[pos+5] + buf[pos+2] - buf[pos+6];
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}
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Sample s( xreal << 3, yimag << 3 );
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**it = s;
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(*it)++;
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}
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}
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void V4LThread::callback(const quint8* buf, qint32 len)
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{
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qint16 xreal, yimag, phase;
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SampleVector::iterator it = m_convertBuffer.begin();
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|
||||
switch(4) {
|
||||
case 0: // 1:1 = no decimation
|
||||
// just rotation
|
||||
phase = -(1<<2);
|
||||
for (int pos = 0; pos < len + 3; pos += 4) {
|
||||
phase *= -1;
|
||||
xreal = phase * (2 * buf[pos+0] - 255);
|
||||
yimag = phase * (2 * buf[pos+1] - 255);
|
||||
*it++ = Sample(xreal, yimag);
|
||||
xreal = phase * (255 - 2 * buf[pos+3]);
|
||||
yimag = phase * (2 * buf[pos+2] - 255);
|
||||
*it++ = Sample(xreal, yimag);
|
||||
}
|
||||
break;
|
||||
case 1: // 1:2
|
||||
decimate2(&it, buf, len);
|
||||
break;
|
||||
|
||||
case 2: // 1:4
|
||||
decimate4(&it, buf, len);
|
||||
break;
|
||||
|
||||
case 3: // 1:8
|
||||
decimate8(&it, buf, len);
|
||||
break;
|
||||
|
||||
default:
|
||||
case 4: // 1:16
|
||||
decimate16(&it, buf, len);
|
||||
break;
|
||||
}
|
||||
|
||||
m_sampleFifo->write(m_convertBuffer.begin(), it);
|
||||
/*
|
||||
if(!m_running)
|
||||
rtlsdr_cancel_async(m_dev);
|
||||
*/
|
||||
}
|
||||
|
||||
void V4LThread::callbackHelper(unsigned char* buf, quint32 len, void* ctx)
|
||||
{
|
||||
V4LThread* thread = (V4LThread*)ctx;
|
||||
thread->callback(buf, len);
|
||||
}
|
||||
|
||||
@ -24,6 +24,9 @@
|
||||
#include "dsp/samplefifo.h"
|
||||
#include "dsp/inthalfbandfilter.h"
|
||||
|
||||
#define SAMPLERATE 1024000
|
||||
#define BLOCKSIZE 4096
|
||||
|
||||
class V4LThread : public QThread {
|
||||
Q_OBJECT
|
||||
|
||||
@ -31,12 +34,25 @@ public:
|
||||
V4LThread(SampleFifo* sampleFifo, QObject* parent = NULL);
|
||||
~V4LThread();
|
||||
|
||||
void startWork();
|
||||
bool Init();
|
||||
void stopWork();
|
||||
|
||||
void setSamplerate(int samplerate);
|
||||
|
||||
void OpenSource(const char *filename);
|
||||
void CloseSource();
|
||||
void set_sample_rate(double samp_rate);
|
||||
void set_center_freq(double freq);
|
||||
void set_bandwidth(double bandwidth);
|
||||
void set_tuner_gain(double gain);
|
||||
int work(int n_items);
|
||||
private:
|
||||
int fd;
|
||||
quint32 pixelformat;
|
||||
struct v4l_buffer *buffers;
|
||||
unsigned int n_buffers;
|
||||
void *recebuf_ptr;
|
||||
unsigned int recebuf_len;
|
||||
unsigned int recebuf_mmap_index;
|
||||
|
||||
QMutex m_startWaitMutex;
|
||||
QWaitCondition m_startWaiter;
|
||||
bool m_running;
|
||||
@ -48,13 +64,5 @@ private:
|
||||
|
||||
void run();
|
||||
|
||||
void decimate2(SampleVector::iterator* it, const quint8* buf, qint32 len);
|
||||
void decimate4(SampleVector::iterator* it, const quint8* buf, qint32 len);
|
||||
void decimate8(SampleVector::iterator* it, const quint8* buf, qint32 len);
|
||||
void decimate16(SampleVector::iterator* it, const quint8* buf, qint32 len);
|
||||
void callback(const quint8* buf, qint32 len);
|
||||
|
||||
static void callbackHelper(unsigned char* buf, quint32 len, void* ctx);
|
||||
};
|
||||
|
||||
#endif // INCLUDE_V4LTHREAD_H
|
||||
|
||||
Loading…
Reference in New Issue
Block a user