Initial copy of QtMultimediaKit.
Comes from original repo, with SHA1: 2c82d5611655e5967f5c5095af50c0991c4378b2
This commit is contained in:
Michael Goddard
538
src/plugins/v4l/radio/v4lradiocontrol.cpp
Normal file
538
src/plugins/v4l/radio/v4lradiocontrol.cpp
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@@ -0,0 +1,538 @@
|
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/****************************************************************************
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||||
**
|
||||
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
|
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** All rights reserved.
|
||||
** Contact: Nokia Corporation (qt-info@nokia.com)
|
||||
**
|
||||
** This file is part of the Qt Mobility Components.
|
||||
**
|
||||
** $QT_BEGIN_LICENSE:LGPL$
|
||||
** No Commercial Usage
|
||||
** This file contains pre-release code and may not be distributed.
|
||||
** You may use this file in accordance with the terms and conditions
|
||||
** contained in the Technology Preview License Agreement accompanying
|
||||
** this package.
|
||||
**
|
||||
** GNU Lesser General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU Lesser
|
||||
** General Public License version 2.1 as published by the Free Software
|
||||
** Foundation and appearing in the file LICENSE.LGPL included in the
|
||||
** packaging of this file. Please review the following information to
|
||||
** ensure the GNU Lesser General Public License version 2.1 requirements
|
||||
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
||||
**
|
||||
** In addition, as a special exception, Nokia gives you certain additional
|
||||
** rights. These rights are described in the Nokia Qt LGPL Exception
|
||||
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
||||
**
|
||||
** If you have questions regarding the use of this file, please contact
|
||||
** Nokia at qt-info@nokia.com.
|
||||
**
|
||||
**
|
||||
**
|
||||
**
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||||
**
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||||
**
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||||
**
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||||
**
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||||
** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "v4lradiocontrol.h"
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#include "v4lradioservice.h"
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#include <QtCore/qdebug.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include "linux/videodev2.h"
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#include <sys/soundcard.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <unistd.h>
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V4LRadioControl::V4LRadioControl(QObject *parent)
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:QRadioTunerControl(parent)
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{
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fd = -1;
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initRadio();
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muted = false;
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stereo = false;
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m_error = false;
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sig = 0;
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currentBand = QRadioTuner::FM;
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step = 100000;
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scanning = false;
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playTime.restart();
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timer = new QTimer(this);
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timer->setInterval(200);
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connect(timer,SIGNAL(timeout()),this,SLOT(search()));
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timer->start();
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}
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V4LRadioControl::~V4LRadioControl()
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{
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timer->stop();
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if(fd > 0)
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::close(fd);
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}
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bool V4LRadioControl::isAvailable() const
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{
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return available;
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}
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QtMultimediaKit::AvailabilityError V4LRadioControl::availabilityError() const
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{
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if (fd > 0)
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return QtMultimediaKit::NoError;
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else
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return QtMultimediaKit::ResourceError;
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}
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QRadioTuner::State V4LRadioControl::state() const
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{
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return fd > 0 ? QRadioTuner::ActiveState : QRadioTuner::StoppedState;
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}
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QRadioTuner::Band V4LRadioControl::band() const
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{
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return currentBand;
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}
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bool V4LRadioControl::isBandSupported(QRadioTuner::Band b) const
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{
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QRadioTuner::Band bnd = (QRadioTuner::Band)b;
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switch(bnd) {
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case QRadioTuner::FM:
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if(freqMin <= 87500000 && freqMax >= 108000000)
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return true;
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break;
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case QRadioTuner::LW:
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if(freqMin <= 148500 && freqMax >= 283500)
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return true;
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case QRadioTuner::AM:
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if(freqMin <= 520000 && freqMax >= 1610000)
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return true;
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default:
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if(freqMin <= 1711000 && freqMax >= 30000000)
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return true;
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}
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return false;
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}
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void V4LRadioControl::setBand(QRadioTuner::Band b)
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{
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if(freqMin <= 87500000 && freqMax >= 108000000 && b == QRadioTuner::FM) {
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// FM 87.5 to 108.0 MHz, except Japan 76-90 MHz
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currentBand = (QRadioTuner::Band)b;
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step = 100000; // 100kHz steps
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emit bandChanged(currentBand);
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} else if(freqMin <= 148500 && freqMax >= 283500 && b == QRadioTuner::LW) {
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// LW 148.5 to 283.5 kHz, 9kHz channel spacing (Europe, Africa, Asia)
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currentBand = (QRadioTuner::Band)b;
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step = 1000; // 1kHz steps
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emit bandChanged(currentBand);
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} else if(freqMin <= 520000 && freqMax >= 1610000 && b == QRadioTuner::AM) {
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// AM 520 to 1610 kHz, 9 or 10kHz channel spacing, extended 1610 to 1710 kHz
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currentBand = (QRadioTuner::Band)b;
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step = 1000; // 1kHz steps
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emit bandChanged(currentBand);
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} else if(freqMin <= 1711000 && freqMax >= 30000000 && b == QRadioTuner::SW) {
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// SW 1.711 to 30.0 MHz, divided into 15 bands. 5kHz channel spacing
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currentBand = (QRadioTuner::Band)b;
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step = 500; // 500Hz steps
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emit bandChanged(currentBand);
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}
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playTime.restart();
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}
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int V4LRadioControl::frequency() const
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{
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return currentFreq;
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}
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int V4LRadioControl::frequencyStep(QRadioTuner::Band b) const
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{
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int step = 0;
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if(b == QRadioTuner::FM)
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step = 100000; // 100kHz steps
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else if(b == QRadioTuner::LW)
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step = 1000; // 1kHz steps
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else if(b == QRadioTuner::AM)
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step = 1000; // 1kHz steps
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else if(b == QRadioTuner::SW)
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step = 500; // 500Hz steps
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return step;
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}
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QPair<int,int> V4LRadioControl::frequencyRange(QRadioTuner::Band b) const
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{
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if(b == QRadioTuner::AM)
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return qMakePair<int,int>(520000,1710000);
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else if(b == QRadioTuner::FM)
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return qMakePair<int,int>(87500000,108000000);
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else if(b == QRadioTuner::SW)
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return qMakePair<int,int>(1711111,30000000);
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else if(b == QRadioTuner::LW)
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return qMakePair<int,int>(148500,283500);
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return qMakePair<int,int>(0,0);
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}
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void V4LRadioControl::setFrequency(int frequency)
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{
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qint64 f = frequency;
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v4l2_frequency freq;
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if(frequency < freqMin)
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f = freqMax;
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if(frequency > freqMax)
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f = freqMin;
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if(fd > 0) {
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memset( &freq, 0, sizeof( freq ) );
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// Use the first tuner
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freq.tuner = 0;
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if ( ioctl( fd, VIDIOC_G_FREQUENCY, &freq ) >= 0 ) {
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if(low) {
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// For low, freq in units of 62.5Hz, so convert from Hz to units.
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freq.frequency = (int)(f/62.5);
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} else {
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// For high, freq in units of 62.5kHz, so convert from Hz to units.
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freq.frequency = (int)(f/62500);
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}
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ioctl( fd, VIDIOC_S_FREQUENCY, &freq );
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currentFreq = f;
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playTime.restart();
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emit frequencyChanged(currentFreq);
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}
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}
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playTime.restart();
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}
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bool V4LRadioControl::isStereo() const
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{
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return stereo;
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}
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QRadioTuner::StereoMode V4LRadioControl::stereoMode() const
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{
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return QRadioTuner::Auto;
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}
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void V4LRadioControl::setStereoMode(QRadioTuner::StereoMode mode)
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{
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bool stereo = true;
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if(mode == QRadioTuner::ForceMono)
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stereo = false;
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v4l2_tuner tuner;
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memset( &tuner, 0, sizeof( tuner ) );
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if ( ioctl( fd, VIDIOC_G_TUNER, &tuner ) >= 0 ) {
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if(stereo)
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tuner.audmode = V4L2_TUNER_MODE_STEREO;
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else
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tuner.audmode = V4L2_TUNER_MODE_MONO;
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if ( ioctl( fd, VIDIOC_S_TUNER, &tuner ) >= 0 ) {
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emit stereoStatusChanged(stereo);
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}
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}
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}
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int V4LRadioControl::signalStrength() const
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{
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v4l2_tuner tuner;
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// Return the first tuner founds signal strength.
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for ( int index = 0; index < tuners; ++index ) {
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memset( &tuner, 0, sizeof( tuner ) );
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tuner.index = index;
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if ( ioctl( fd, VIDIOC_G_TUNER, &tuner ) < 0 )
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continue;
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if ( tuner.type != V4L2_TUNER_RADIO )
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continue;
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// percentage signal strength
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return tuner.signal*100/65535;
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}
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return 0;
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}
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int V4LRadioControl::volume() const
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{
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v4l2_queryctrl queryctrl;
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if(fd > 0) {
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memset( &queryctrl, 0, sizeof( queryctrl ) );
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queryctrl.id = V4L2_CID_AUDIO_VOLUME;
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if ( ioctl( fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 ) {
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if(queryctrl.maximum == 0) {
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return vol;
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} else {
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// percentage volume returned
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return queryctrl.default_value*100/queryctrl.maximum;
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}
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}
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}
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return 0;
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}
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void V4LRadioControl::setVolume(int volume)
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{
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v4l2_queryctrl queryctrl;
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if(fd > 0) {
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memset( &queryctrl, 0, sizeof( queryctrl ) );
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queryctrl.id = V4L2_CID_AUDIO_VOLUME;
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if ( ioctl( fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 ) {
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v4l2_control control;
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if(queryctrl.maximum > 0) {
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memset( &control, 0, sizeof( control ) );
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control.id = V4L2_CID_AUDIO_VOLUME;
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control.value = volume*queryctrl.maximum/100;
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ioctl( fd, VIDIOC_S_CTRL, &control );
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} else {
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setVol(volume);
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}
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emit volumeChanged(volume);
|
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}
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}
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}
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bool V4LRadioControl::isMuted() const
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{
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return muted;
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}
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void V4LRadioControl::setMuted(bool muted)
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{
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v4l2_queryctrl queryctrl;
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if(fd > 0) {
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memset( &queryctrl, 0, sizeof( queryctrl ) );
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queryctrl.id = V4L2_CID_AUDIO_MUTE;
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if ( ioctl( fd, VIDIOC_QUERYCTRL, &queryctrl ) >= 0 ) {
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v4l2_control control;
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memset( &control, 0, sizeof( control ) );
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control.id = V4L2_CID_AUDIO_MUTE;
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control.value = (muted ? queryctrl.maximum : queryctrl.minimum );
|
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ioctl( fd, VIDIOC_S_CTRL, &control );
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this->muted = muted;
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emit mutedChanged(muted);
|
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}
|
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}
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}
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bool V4LRadioControl::isSearching() const
|
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{
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return scanning;
|
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}
|
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|
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void V4LRadioControl::cancelSearch()
|
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{
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scanning = false;
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timer->stop();
|
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}
|
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|
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void V4LRadioControl::searchForward()
|
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{
|
||||
// Scan up
|
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if(scanning) {
|
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cancelSearch();
|
||||
return;
|
||||
}
|
||||
scanning = true;
|
||||
forward = true;
|
||||
timer->start();
|
||||
}
|
||||
|
||||
void V4LRadioControl::searchBackward()
|
||||
{
|
||||
// Scan down
|
||||
if(scanning) {
|
||||
cancelSearch();
|
||||
return;
|
||||
}
|
||||
scanning = true;
|
||||
forward = false;
|
||||
timer->start();
|
||||
}
|
||||
|
||||
void V4LRadioControl::start()
|
||||
{
|
||||
}
|
||||
|
||||
void V4LRadioControl::stop()
|
||||
{
|
||||
}
|
||||
|
||||
QRadioTuner::Error V4LRadioControl::error() const
|
||||
{
|
||||
if(m_error)
|
||||
return QRadioTuner::OpenError;
|
||||
|
||||
return QRadioTuner::NoError;
|
||||
}
|
||||
|
||||
QString V4LRadioControl::errorString() const
|
||||
{
|
||||
return QString();
|
||||
}
|
||||
|
||||
void V4LRadioControl::search()
|
||||
{
|
||||
int signal = signalStrength();
|
||||
if(sig != signal) {
|
||||
sig = signal;
|
||||
emit signalStrengthChanged(sig);
|
||||
}
|
||||
|
||||
if(!scanning) return;
|
||||
|
||||
if (signal > 25) {
|
||||
cancelSearch();
|
||||
return;
|
||||
}
|
||||
|
||||
if(forward) {
|
||||
setFrequency(currentFreq+step);
|
||||
} else {
|
||||
setFrequency(currentFreq-step);
|
||||
}
|
||||
}
|
||||
|
||||
bool V4LRadioControl::initRadio()
|
||||
{
|
||||
v4l2_tuner tuner;
|
||||
v4l2_input input;
|
||||
v4l2_frequency freq;
|
||||
v4l2_capability cap;
|
||||
|
||||
low = false;
|
||||
available = false;
|
||||
freqMin = freqMax = currentFreq = 0;
|
||||
|
||||
fd = ::open("/dev/radio0", O_RDWR);
|
||||
|
||||
if(fd != -1) {
|
||||
// Capabilities
|
||||
memset( &cap, 0, sizeof( cap ) );
|
||||
if(::ioctl(fd, VIDIOC_QUERYCAP, &cap ) >= 0) {
|
||||
if(((cap.capabilities & V4L2_CAP_RADIO) == 0) && ((cap.capabilities & V4L2_CAP_AUDIO) == 0))
|
||||
available = true;
|
||||
}
|
||||
|
||||
// Tuners
|
||||
memset( &input, 0, sizeof( input ) );
|
||||
tuners = 0;
|
||||
for ( ;; ) {
|
||||
memset( &input, 0, sizeof( input ) );
|
||||
input.index = tuners;
|
||||
if ( ioctl( fd, VIDIOC_ENUMINPUT, &input ) < 0 )
|
||||
break;
|
||||
++tuners;
|
||||
}
|
||||
|
||||
// Freq bands
|
||||
for ( int index = 0; index < tuners; ++index ) {
|
||||
memset( &tuner, 0, sizeof( tuner ) );
|
||||
tuner.index = index;
|
||||
if ( ioctl( fd, VIDIOC_G_TUNER, &tuner ) < 0 )
|
||||
continue;
|
||||
if ( tuner.type != V4L2_TUNER_RADIO )
|
||||
continue;
|
||||
if ( ( tuner.capability & V4L2_TUNER_CAP_LOW ) != 0 ) {
|
||||
// Units are 1/16th of a kHz.
|
||||
low = true;
|
||||
}
|
||||
if(low) {
|
||||
freqMin = tuner.rangelow * 62.5;
|
||||
freqMax = tuner.rangehigh * 62.5;
|
||||
} else {
|
||||
freqMin = tuner.rangelow * 62500;
|
||||
freqMax = tuner.rangehigh * 62500;
|
||||
}
|
||||
}
|
||||
|
||||
// frequency
|
||||
memset( &freq, 0, sizeof( freq ) );
|
||||
if(::ioctl(fd, VIDIOC_G_FREQUENCY, &freq ) >= 0) {
|
||||
if ( ((int)freq.frequency) != -1 ) { // -1 means not set.
|
||||
if(low)
|
||||
currentFreq = freq.frequency * 62.5;
|
||||
else
|
||||
currentFreq = freq.frequency * 62500;
|
||||
}
|
||||
}
|
||||
|
||||
// stereo
|
||||
bool stereo = false;
|
||||
memset( &tuner, 0, sizeof( tuner ) );
|
||||
if ( ioctl( fd, VIDIOC_G_TUNER, &tuner ) >= 0 ) {
|
||||
if((tuner.rxsubchans & V4L2_TUNER_SUB_STEREO) != 0)
|
||||
stereo = true;
|
||||
}
|
||||
|
||||
vol = getVol();
|
||||
|
||||
return true;
|
||||
}
|
||||
m_error = true;
|
||||
emit error();
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
void V4LRadioControl::setVol(int v)
|
||||
{
|
||||
int fd = ::open( "/dev/mixer", O_RDWR, 0 );
|
||||
if ( fd < 0 )
|
||||
return;
|
||||
int volume = v;
|
||||
if ( volume < 0 )
|
||||
volume = 0;
|
||||
else if ( volume > 100 )
|
||||
volume = 100;
|
||||
vol = volume;
|
||||
volume += volume << 8;
|
||||
::ioctl( fd, MIXER_WRITE(SOUND_MIXER_VOLUME), &volume );
|
||||
::close( fd );
|
||||
}
|
||||
|
||||
int V4LRadioControl::getVol()
|
||||
{
|
||||
int fd = ::open( "/dev/mixer", O_RDWR, 0 );
|
||||
if ( fd >= 0 ) {
|
||||
int volume = 0;
|
||||
::ioctl( fd, MIXER_READ(SOUND_MIXER_VOLUME), &volume );
|
||||
int left = ( volume & 0xFF );
|
||||
int right = ( ( volume >> 8 ) & 0xFF );
|
||||
if ( left > right )
|
||||
vol = left;
|
||||
else
|
||||
vol = right;
|
||||
::close( fd );
|
||||
return vol;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user