mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-12-22 17:45:48 -05:00
Experimental Kernel swradio driver.
This commit is contained in:
parent
62656fc45b
commit
86f256dbc4
@ -5,5 +5,5 @@ For Ubuntu:
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"librtlsdr-dev" is in the "universe" repo. (utopic 14.10 amd64.)
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Use "cmake ../ -DKERNEL=ON" to build the Linux kernel driver. May support Airspy and Hackrf.
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Use "cmake ../ -DKERNEL=ON" to build the Linux kernel driver (Experimental). Needs a recent kernel and libv4l2. Will need extra work to support Airspy and Hackrf.
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@ -25,7 +25,7 @@ include_directories(
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${CMAKE_CURRENT_BINARY_DIR}
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${CMAKE_SOURCE_DIR}/include
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${CMAKE_SOURCE_DIR}/include-gpl
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${LIBRTLSDR_INCLUDE_DIR}
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# ${LIBRTLSDR_INCLUDE_DIR}
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)
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#include(${QT_USE_FILE})
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@ -19,6 +19,7 @@
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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 "v4lsource.h"
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#include "v4lgui.h"
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#include "util/simpleserializer.h"
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@ -67,7 +68,7 @@ bool V4LInput::Settings::deserialize(const QByteArray& data)
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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(NULL),
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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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@ -82,7 +83,7 @@ bool V4LInput::startInput(int device)
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{
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QMutexLocker mutexLocker(&m_mutex);
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if(m_dev != NULL)
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if(m_dev > 0)
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stopInput();
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char vendor[256];
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@ -91,19 +92,23 @@ bool V4LInput::startInput(int device)
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int res;
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int numberOfGains;
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if(!m_sampleFifo.setSize(524288)) {
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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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if((res = rtlsdr_open(&m_dev, device)) < 0) {
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qCritical("could not open RTLSDR #%d: %s", device, strerror(errno));
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OpenSource("/dev/swradio0");
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if (m_dev == 0) {
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qCritical("could not open SDR");
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return false;
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}
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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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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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@ -139,8 +144,8 @@ bool V4LInput::startInput(int device)
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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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if((m_V4LThread = new V4LThread(m_dev, &m_sampleFifo)) == NULL) {
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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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@ -149,7 +154,7 @@ bool V4LInput::startInput(int device)
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mutexLocker.unlock();
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applySettings(m_generalSettings, m_settings, true);
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qDebug("RTLSDRInput: start");
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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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@ -168,9 +173,9 @@ 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 != NULL) {
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rtlsdr_close(m_dev);
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m_dev = NULL;
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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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@ -209,22 +214,18 @@ 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 != NULL) {
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if(rtlsdr_set_center_freq(m_dev, m_generalSettings.m_centerFrequency
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+ 384000) != 0)
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qDebug("osmosdr_set_center_freq(%lld) failed", m_generalSettings.m_centerFrequency);
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}
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if(m_dev > 0)
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V4LInput::set_center_freq( (double)(m_generalSettings.m_centerFrequency
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+ 384000) ); // 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 != NULL) {
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if(rtlsdr_set_tuner_gain(m_dev, m_settings.m_gain) != 0)
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qDebug("rtlsdr_set_tuner_gain() failed");
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}
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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_decimation != settings.m_decimation) || force) {
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m_settings.m_decimation = settings.m_decimation;
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if(m_dev != NULL)
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if(m_dev > 0)
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m_V4LThread->setDecimation(m_settings.m_decimation);
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}
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return true;
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@ -19,8 +19,8 @@
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#define INCLUDE_V4LINPUT_H
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#include "dsp/samplesource/samplesource.h"
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#include <rtl-sdr.h>
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#include <QString>
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#include "v4lsource.h"
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class V4LThread;
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@ -88,13 +88,29 @@ public:
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const QString& getDeviceDescription() const;
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int getSampleRate() const;
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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,
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void* input_items,
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void* 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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rtlsdr_dev_t* m_dev;
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int m_dev;
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V4LThread* m_V4LThread;
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QString m_deviceDescription;
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std::vector<int> m_gains;
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@ -18,6 +18,7 @@
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*/
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#include "v4lsource.h"
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#include "v4linput.h"
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/* Control classes */
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#define V4L2_CTRL_CLASS_USER 0x00980000 /* Old-style 'user' controls */
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@ -33,8 +34,8 @@
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#define CID_TUNER_IF ((V4L2_CID_USER_BASE | 0xf000) + 12)
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#define CID_TUNER_GAIN ((V4L2_CID_USER_BASE | 0xf000) + 13)
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#define V4L2_PIX_FMT_SDR_U8 v4l2_fourcc('D', 'U', '0', '8') /* unsigned 8-bit */
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#define V4L2_PIX_FMT_SDR_U16LE v4l2_fourcc('D', 'U', '1', '6') /* unsigned 16-bit LE */
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#define V4L2_PIX_FMT_SDR_U8 v4l2_fourcc('C', 'U', '0', '8') /* unsigned 8-bit Complex*/
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#define V4L2_PIX_FMT_SDR_U16LE v4l2_fourcc('C', 'U', '1', '6') /* unsigned 16-bit Complex*/
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#define CLEAR(x) memset(&(x), 0, sizeof(x))
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@ -50,9 +51,8 @@ static void xioctl(int fh, unsigned long int request, void *arg)
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}
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}
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namespace kernel{
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v4l::v4l(const char *filename)
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void
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V4LInput::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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@ -89,7 +89,7 @@ namespace kernel{
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req.memory = V4L2_MEMORY_MMAP;
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xioctl(fd, VIDIOC_REQBUFS, &req);
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buffers = (struct buffer*) calloc(req.count, sizeof(*buffers));
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buffers = (struct v4l_buffer*) calloc(req.count, sizeof(*buffers));
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for (n_buffers = 0; n_buffers < req.count; n_buffers++) {
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CLEAR(buf);
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buf.type = V4L2_BUF_TYPE_SDR_CAPTURE;
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@ -120,10 +120,8 @@ namespace kernel{
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xioctl(fd, VIDIOC_STREAMON, &type);
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}
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/*
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* Our virtual destructor.
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*/
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v4l::~v4l()
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void
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V4LInput::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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@ -138,8 +136,8 @@ namespace kernel{
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v4l2_close(fd);
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}
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void
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v4l::set_samp_rate(double samp_rate)
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void
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V4LInput::set_sample_rate(double samp_rate)
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{
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struct v4l2_frequency frequency;
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@ -154,8 +152,8 @@ namespace kernel{
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return;
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}
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void
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v4l::set_center_freq(double freq)
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void
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V4LInput::set_center_freq(double freq)
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{
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struct v4l2_frequency frequency;
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@ -170,8 +168,8 @@ namespace kernel{
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return;
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}
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void
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v4l::set_bandwidth(double bandwidth)
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void
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V4LInput::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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@ -191,8 +189,8 @@ namespace kernel{
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return;
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}
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void
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v4l::set_tuner_gain(double gain)
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void
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V4LInput::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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@ -212,8 +210,8 @@ namespace kernel{
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return;
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}
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int
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v4l::work(int noutput_items,
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int
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V4LInput::work(int noutput_items,
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void* input_items,
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void* output_items)
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{
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@ -297,5 +295,3 @@ process_buf:
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return 0;
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}
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} /* namespace kernel */
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#include "fcntl.h"
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#include <sys/mman.h>
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namespace kernel {
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// v4l2_mmap
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struct buffer {
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void *start;
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size_t length;
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};
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struct v4l_buffer {
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void *start;
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size_t length;
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};
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class v4l //: public v4l
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{
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private:
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// v4l2 device file handle
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int fd;
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// stream / sample format
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uint32_t pixelformat;
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struct buffer *buffers;
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unsigned int n_buffers;
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// for processing mmap buffer
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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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public:
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v4l(const char *filename);
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~v4l();
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void set_samp_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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// Where all the action really happens
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int work(int noutput_items,
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void* input_items,
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void* output_items);
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};
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} // namespace kernel
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#endif /* INCLUDED_KERNEL_LIBV4L2_X_IMPL_H */
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#define BLOCKSIZE 16384
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V4LThread::V4LThread(rtlsdr_dev_t* dev, SampleFifo* sampleFifo, QObject* parent) :
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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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m_dev(dev),
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m_dev(1),
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m_convertBuffer(BLOCKSIZE),
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m_sampleFifo(sampleFifo),
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m_decimation(2)
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@ -64,14 +64,14 @@ void V4LThread::run()
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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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}
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*/
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m_running = false;
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}
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@ -178,12 +178,13 @@ void V4LThread::callback(const quint8* buf, qint32 len)
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}
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m_sampleFifo->write(m_convertBuffer.begin(), it);
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/*
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if(!m_running)
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rtlsdr_cancel_async(m_dev);
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*/
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}
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void V4LThread::callbackHelper(unsigned char* buf, uint32_t len, void* ctx)
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void V4LThread::callbackHelper(unsigned char* buf, quint32 len, void* ctx)
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{
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V4LThread* thread = (V4LThread*)ctx;
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thread->callback(buf, len);
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@ -21,7 +21,6 @@
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#include <QThread>
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#include <QMutex>
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#include <QWaitCondition>
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#include <rtl-sdr.h>
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#include "dsp/samplefifo.h"
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#include "dsp/inthalfbandfilter.h"
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@ -29,7 +28,7 @@ class V4LThread : public QThread {
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Q_OBJECT
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public:
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V4LThread(rtlsdr_dev_t* dev, SampleFifo* sampleFifo, QObject* parent = NULL);
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V4LThread(SampleFifo* sampleFifo, QObject* parent = NULL);
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~V4LThread();
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void startWork();
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@ -42,7 +41,7 @@ private:
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QWaitCondition m_startWaiter;
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bool m_running;
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rtlsdr_dev_t* m_dev;
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int m_dev;
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SampleVector m_convertBuffer;
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SampleFifo* m_sampleFifo;
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@ -57,7 +56,7 @@ private:
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void decimate16(SampleVector::iterator* it, const quint8* buf, qint32 len);
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void callback(const quint8* buf, qint32 len);
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static void callbackHelper(unsigned char* buf, uint32_t len, void* ctx);
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static void callbackHelper(unsigned char* buf, quint32 len, void* ctx);
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};
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#endif // INCLUDE_V4LTHREAD_H
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