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Diffstat (limited to 'src/multimedia/doc/snippets/multimedia-snippets')
8 files changed, 1345 insertions, 0 deletions
diff --git a/src/multimedia/doc/snippets/multimedia-snippets/audio.cpp b/src/multimedia/doc/snippets/multimedia-snippets/audio.cpp new file mode 100644 index 000000000..a39f1c7f4 --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/audio.cpp @@ -0,0 +1,251 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* Audio related snippets */ +#include <QFile> +#include <QTimer> +#include <QDebug> + +#include "qaudiodeviceinfo.h" +#include "qaudioinput.h" +#include "qaudiooutput.h" +#include "qaudioprobe.h" +#include "qaudiodecoder.h" + +class AudioInputExample : public QObject { + Q_OBJECT +public: + void setup(); + + +public Q_SLOTS: + void stopRecording(); + void stateChanged(QAudio::State newState); + +private: + //! [Audio input class members] + QFile destinationFile; // class member. + QAudioInput* audio; // class member. + //! [Audio input class members] +}; + + +void AudioInputExample::setup() +//! [Audio input setup] +{ + destinationFile.setFileName("/tmp/test.raw"); + destinationFile.open( QIODevice::WriteOnly | QIODevice::Truncate ); + + QAudioFormat format; + // set up the format you want, eg. + format.setSampleRate(8000); + format.setChannelCount(1); + format.setSampleSize(8); + format.setCodec("audio/pcm"); + format.setByteOrder(QAudioFormat::LittleEndian); + format.setSampleType(QAudioFormat::UnSignedInt); + + QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice(); + if (!info.isFormatSupported(format)) { + qWarning()<<"default format not supported try to use nearest"; + format = info.nearestFormat(format); + } + + audio = new QAudioInput(format, this); + connect(audio, SIGNAL(stateChanged(QAudio::State)), this, SLOT(stateChanged(QAudio::State))); + + QTimer::singleShot(3000, this, SLOT(stopRecording())); + audio->start(&destinationFile); + // Records audio for 3000ms +} +//! [Audio input setup] + +//! [Audio input stop recording] +void AudioInputExample::stopRecording() +{ + audio->stop(); + destinationFile.close(); + delete audio; +} +//! [Audio input stop recording] + +//! [Audio input state changed] +void AudioInputExample::stateChanged(QAudio::State newState) +{ + switch (newState) { + case QAudio::StoppedState: + if (audio->error() != QAudio::NoError) { + // Error handling + } else { + // Finished recording + } + break; + + case QAudio::ActiveState: + // Started recording - read from IO device + break; + + default: + // ... other cases as appropriate + break; + } +} +//! [Audio input state changed] + + +class AudioOutputExample : public QObject { + Q_OBJECT +public: + void setup(); + +public Q_SLOTS: + void stateChanged(QAudio::State newState); + +private: + //! [Audio output class members] + QFile sourceFile; // class member. + QAudioOutput* audio; // class member. + //! [Audio output class members] +}; + + +void AudioOutputExample::setup() +//! [Audio output setup] +{ + sourceFile.setFileName("/tmp/test.raw"); + sourceFile.open(QIODevice::ReadOnly); + + QAudioFormat format; + // Set up the format, eg. + format.setSampleRate(8000); + format.setChannelCount(1); + format.setSampleSize(8); + format.setCodec("audio/pcm"); + format.setByteOrder(QAudioFormat::LittleEndian); + format.setSampleType(QAudioFormat::UnSignedInt); + + QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice()); + if (!info.isFormatSupported(format)) { + qWarning() << "raw audio format not supported by backend, cannot play audio."; + return; + } + + audio = new QAudioOutput(format, this); + connect(audio, SIGNAL(stateChanged(QAudio::State)), this, SLOT(stateChanged(QAudio::State))); + audio->start(&sourceFile); +} +//! [Audio output setup] + +//! [Audio output state changed] +void AudioOutputExample::stateChanged(QAudio::State newState) +{ + switch (newState) { + case QAudio::IdleState: + // Finished playing (no more data) + audio->stop(); + sourceFile.close(); + delete audio; + break; + + case QAudio::StoppedState: + // Stopped for other reasons + if (audio->error() != QAudio::NoError) { + // Error handling + } + break; + + default: + // ... other cases as appropriate + break; + } +} +//! [Audio output state changed] + +void AudioDeviceInfo() +{ + //! [Setting audio format] + QAudioFormat format; + format.setSampleRate(44100); + // ... other format parameters + format.setSampleType(QAudioFormat::SignedInt); + + QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice()); + + if (!info.isFormatSupported(format)) + format = info.nearestFormat(format); + //! [Setting audio format] + + //! [Dumping audio formats] + foreach (const QAudioDeviceInfo &deviceInfo, QAudioDeviceInfo::availableDevices(QAudio::AudioOutput)) + qDebug() << "Device name: " << deviceInfo.deviceName(); + //! [Dumping audio formats] +} + +class AudioDecodingExample : public QObject { + Q_OBJECT +public: + void decode(); + +public Q_SLOTS: + void stateChanged(QAudio::State newState); + void readBuffer(); +}; + +void AudioDecodingExample::decode() +{ + //! [Local audio decoding] + QAudioFormat desiredFormat; + desiredFormat.setChannelCount(2); + desiredFormat.setCodec("audio/x-raw"); + desiredFormat.setSampleType(QAudioFormat::UnSignedInt); + desiredFormat.setSampleRate(48000); + desiredFormat.setSampleSize(16); + + QAudioDecoder *decoder = new QAudioDecoder(this); + decoder->setAudioFormat(desiredFormat); + decoder->setSourceFilename("level1.mp3"); + + connect(decoder, SIGNAL(bufferReady()), this, SLOT(readBuffer())); + decoder->start(); + + // Now wait for bufferReady() signal and call decoder->read() + //! [Local audio decoding] +} diff --git a/src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp b/src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp new file mode 100644 index 000000000..e0f136910 --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/audiorecorder.cpp @@ -0,0 +1,213 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#include <qaudiorecorder.h> +#include <qmediaservice.h> + +#include <QtMultimedia/qaudioformat.h> + +#include "audiorecorder.h" + +AudioRecorder::AudioRecorder() +{ +//! [create-objs-1] + capture = new QAudioRecorder(); +//! [create-objs-1] + + // set a default file + capture->setOutputLocation(QUrl("test.raw")); + + QWidget *window = new QWidget; + QGridLayout* layout = new QGridLayout; + + QLabel* deviceLabel = new QLabel; + deviceLabel->setText("Devices"); + deviceBox = new QComboBox(this); + deviceBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed); + + QLabel* codecLabel = new QLabel; + codecLabel->setText("Codecs"); + codecsBox = new QComboBox(this); + codecsBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed); + + QLabel* qualityLabel = new QLabel; + qualityLabel->setText("Quality"); + qualityBox = new QComboBox(this); + qualityBox->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Fixed); + +//! [device-list] + for(int i = 0; i < audiosource->deviceCount(); i++) + deviceBox->addItem(audiosource->name(i)); +//! [device-list] + +//! [codec-list] + QStringList codecs = capture->supportedAudioCodecs(); + for(int i = 0; i < codecs.count(); i++) + codecsBox->addItem(codecs.at(i)); +//! [codec-list] + + qualityBox->addItem("Low"); + qualityBox->addItem("Medium"); + qualityBox->addItem("High"); + + connect(capture, SIGNAL(durationChanged(qint64)), this, SLOT(updateProgress(qint64))); + connect(capture, SIGNAL(stateChanged(QMediaRecorder::State)), this, SLOT(stateChanged(QMediaRecorder::State))); + + layout->addWidget(deviceLabel,0,0,Qt::AlignHCenter); + connect(deviceBox,SIGNAL(activated(int)),SLOT(deviceChanged(int))); + layout->addWidget(deviceBox,0,1,1,3,Qt::AlignLeft); + + layout->addWidget(codecLabel,1,0,Qt::AlignHCenter); + connect(codecsBox,SIGNAL(activated(int)),SLOT(codecChanged(int))); + layout->addWidget(codecsBox,1,1,Qt::AlignLeft); + + layout->addWidget(qualityLabel,1,2,Qt::AlignHCenter); + connect(qualityBox,SIGNAL(activated(int)),SLOT(qualityChanged(int))); + layout->addWidget(qualityBox,1,3,Qt::AlignLeft); + + fileButton = new QPushButton(this); + fileButton->setText(tr("Output File")); + connect(fileButton,SIGNAL(clicked()),SLOT(selectOutputFile())); + layout->addWidget(fileButton,3,0,Qt::AlignHCenter); + + button = new QPushButton(this); + button->setText(tr("Record")); + connect(button,SIGNAL(clicked()),SLOT(toggleRecord())); + layout->addWidget(button,3,3,Qt::AlignHCenter); + + recTime = new QLabel; + recTime->setText("0 sec"); + layout->addWidget(recTime,4,0,Qt::AlignHCenter); + + window->setLayout(layout); + setCentralWidget(window); + window->show(); + + active = false; +} + +AudioRecorder::~AudioRecorder() +{ + delete capture; + delete audiosource; +} + +void AudioRecorder::updateProgress(qint64 pos) +{ + currentTime = pos; + if(currentTime == 0) currentTime = 1; + QString text = QString("%1 secs").arg(currentTime/1000); + recTime->setText(text); +} + +void AudioRecorder::stateChanged(QMediaRecorder::State state) +{ + qWarning()<<"stateChanged() "<<state; +} + +void AudioRecorder::deviceChanged(int idx) +{ +//! [get-device] + for(int i = 0; i < audiosource->deviceCount(); i++) { + if(deviceBox->itemText(idx).compare(audiosource->name(i)) == 0) + audiosource->setSelectedDevice(i); + } +//! [get-device] +} + +void AudioRecorder::codecChanged(int idx) +{ + Q_UNUSED(idx); + //capture->setAudioCodec(codecsBox->itemText(idx)); +} + +void AudioRecorder::qualityChanged(int idx) +{ + Q_UNUSED(idx); + /* + if(capture->audioCodec().compare("audio/pcm") == 0) { + if(qualityBox->itemText(idx).compare("Low") == 0) { + // 8000Hz mono is 8kbps + capture->setAudioBitrate(8); + } else if(qualityBox->itemText(idx).compare("Medium") == 0) { + // 22050Hz mono is 44.1kbps + capture->setAudioBitrate(44); + } else if(qualityBox->itemText(idx).compare("High") == 0) { + // 44100Hz mono is 88.2kbps + capture->setAudioBitrate(88); + } + } + */ +} + +//! [toggle-record] +void AudioRecorder::toggleRecord() +{ + if(!active) { + recTime->setText("0 sec"); + currentTime = 0; + capture->record(); + + button->setText(tr("Stop")); + active = true; + } else { + capture->stop(); + button->setText(tr("Record")); + active = false; + } +} +//! [toggle-record] + +void AudioRecorder::selectOutputFile() +{ + QStringList fileNames; + + QFileDialog dialog(this); + + dialog.setFileMode(QFileDialog::AnyFile); + if (dialog.exec()) + fileNames = dialog.selectedFiles(); + + if(fileNames.size() > 0) + capture->setOutputLocation(QUrl(fileNames.first())); +} diff --git a/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp b/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp new file mode 100644 index 000000000..757533be8 --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp @@ -0,0 +1,201 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* Camera snippets */ + +#include "qcamera.h" +#include "qcameraviewfinder.h" +#include "qmediarecorder.h" +#include "qcameraimagecapture.h" +#include "qcameraimageprocessing.h" +#include "qabstractvideosurface.h" + +/* Globals so that everything is consistent. */ +QCamera *camera = 0; +QCameraViewfinder *viewfinder = 0; +QMediaRecorder *recorder = 0; +QCameraImageCapture *imageCapture = 0; + +void overview_viewfinder() +{ + //! [Camera overview viewfinder] + camera = new QCamera; + viewfinder = new QCameraViewfinder; + camera->setViewfinder(viewfinder); + viewfinder->show(); + + camera->start(); // to start the viewfinder + //! [Camera overview viewfinder] +} + +// -.- +class MyVideoSurface : public QAbstractVideoSurface +{ + QList<QVideoFrame::PixelFormat> supportedPixelFormats(QAbstractVideoBuffer::HandleType handleType) const + { + Q_UNUSED(handleType); + return QList<QVideoFrame::PixelFormat>(); + } + bool present(const QVideoFrame &frame) + { + Q_UNUSED(frame); + return true; + } +}; + +void overview_surface() +{ + MyVideoSurface *mySurface; + //! [Camera overview surface] + camera = new QCamera; + mySurface = new MyVideoSurface; + camera->setViewfinder(mySurface); + + camera->start(); + // MyVideoSurface::present(..) will be called with viewfinder frames + //! [Camera overview surface] +} + +void overview_still() +{ + //! [Camera overview capture] + imageCapture = new QCameraImageCapture(camera); + + camera->setCaptureMode(QCamera::CaptureStillImage); + camera->start(); // Viewfinder frames start flowing + + //on half pressed shutter button + camera->searchAndLock(); + + //on shutter button pressed + imageCapture->capture(); + + //on shutter button released + camera->unlock(); + //! [Camera overview capture] +} + +void overview_movie() +{ + //! [Camera overview movie] + camera = new QCamera; + recorder = new QMediaRecorder(camera); + + camera->setCaptureMode(QCamera::CaptureVideo); + camera->start(); + + //on shutter button pressed + recorder->record(); + + // sometime later, or on another press + recorder->stop(); + //! [Camera overview movie] +} + +void camera_blah() +{ + //! [Camera] + camera = new QCamera; + + viewfinder = new QCameraViewfinder(); + viewfinder->show(); + + camera->setViewfinder(viewfinder); + + imageCapture = new QCameraImageCapture(camera); + + camera->setCaptureMode(QCamera::CaptureStillImage); + camera->start(); + //! [Camera] + + //! [Camera keys] + //on half pressed shutter button + camera->searchAndLock(); + + //on shutter button pressed + imageCapture->capture(); + + //on shutter button released + camera->unlock(); + //! [Camera keys] +} + +void cameraimageprocessing() +{ + //! [Camera image whitebalance] + camera = new QCamera; + QCameraImageProcessing *imageProcessing = camera->imageProcessing(); + + if (imageProcessing->isAvailable()) { + imageProcessing->setWhiteBalanceMode(QCameraImageProcessing::WhiteBalanceFluorescent); + } + //! [Camera image whitebalance] + + //! [Camera image denoising] + imageProcessing->setDenoisingLevel(-0.3); //reduce the amount of denoising applied + //! [Camera image denoising] +} + +void camerafocus() +{ + //! [Camera custom zoom] + QCameraFocus *focus = camera->focus(); + focus->setFocusPointMode(QCameraFocus::FocusPointCustom); + focus->setCustomFocusPoint(QPointF(0.25f, 0.75f)); // A point near the bottom left, 25% away from the corner, near that shiny vase + //! [Camera custom zoom] + + //! [Camera combined zoom] + focus->zoomTo(3.0, 4.0); // Super zoom! + //! [Camera combined zoom] + + //! [Camera focus zones] + focus->setFocusPointMode(QCameraFocus::FocusPointAuto); + QList<QCameraFocusZone> zones = focus->focusZones(); + foreach (QCameraFocusZone zone, zones) { + if (zone.status() == QCameraFocusZone::Focused) { + // Draw a green box at zone.area() + } else if (zone.status() == QCameraFocusZone::Selected) { + // This area is selected for autofocusing, but is not in focus + // Draw a yellow box at zone.area() + } + } + //! [Camera focus zones] +} diff --git a/src/multimedia/doc/snippets/multimedia-snippets/media.cpp b/src/multimedia/doc/snippets/multimedia-snippets/media.cpp new file mode 100644 index 000000000..300ad392b --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/media.cpp @@ -0,0 +1,315 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* Media related snippets */ +#include <QFile> +#include <QTimer> + +#include "qmediaplaylist.h" +#include "qmediarecorder.h" +#include "qmediaservice.h" +#include "qmediaplayercontrol.h" +#include "qmediaplayer.h" +#include "qradiotuner.h" +#include "qradiodata.h" +#include "qvideowidget.h" +#include "qcameraimagecapture.h" +#include "qcamera.h" +#include "qcameraviewfinder.h" +#include "qaudioprobe.h" +#include "qaudiorecorder.h" +#include "qvideoprobe.h" + +class MediaExample : public QObject { + Q_OBJECT + + void MediaControl(); + void MediaPlayer(); + void RadioTuna(); + void MediaRecorder(); + void AudioRecorder(); + void EncoderSettings(); + void ImageEncoderSettings(); + void AudioProbe(); + void VideoProbe(); + +private: + // Common naming + QMediaService *mediaService; + QVideoWidget *videoWidget; + QWidget *widget; + QMediaPlayer *player; + QMediaPlaylist *playlist; + QMediaContent video; + QMediaRecorder *recorder; + QCamera *camera; + QCameraViewfinder *viewfinder; + QCameraImageCapture *imageCapture; + QString fileName; + QRadioTuner *radio; + QRadioData *radioData; + QAudioRecorder *audioRecorder; + QAudioProbe *audioProbe; + QVideoProbe *videoProbe; + + QMediaContent image1; + QMediaContent image2; + QMediaContent image3; + + static const int yourRadioStationFrequency = 11; +}; + +void MediaExample::MediaControl() +{ + { + //! [Request control] + QMediaPlayerControl *control = qobject_cast<QMediaPlayerControl *>( + mediaService->requestControl("org.qt-project.qt.mediaplayercontrol/5.0")); + //! [Request control] + Q_UNUSED(control); + } + + { + //! [Request control templated] + QMediaPlayerControl *control = mediaService->requestControl<QMediaPlayerControl *>(); + //! [Request control templated] + Q_UNUSED(control); + } +} + + +void MediaExample::EncoderSettings() +{ + //! [Audio encoder settings] + QAudioEncoderSettings audioSettings; + audioSettings.setCodec("audio/mpeg"); + audioSettings.setChannelCount(2); + + recorder->setAudioSettings(audioSettings); + //! [Audio encoder settings] + + //! [Video encoder settings] + QVideoEncoderSettings videoSettings; + videoSettings.setCodec("video/mpeg2"); + videoSettings.setResolution(640, 480); + + recorder->setVideoSettings(videoSettings); + //! [Video encoder settings] +} + +void MediaExample::ImageEncoderSettings() +{ + //! [Image encoder settings] + QImageEncoderSettings imageSettings; + imageSettings.setCodec("image/jpeg"); + imageSettings.setResolution(1600, 1200); + + imageCapture->setEncodingSettings(imageSettings); + //! [Image encoder settings] +} + +void MediaExample::MediaPlayer() +{ + //! [Player] + player = new QMediaPlayer; + connect(player, SIGNAL(positionChanged(qint64)), this, SLOT(positionChanged(qint64))); + player->setMedia(QUrl::fromLocalFile("/Users/me/Music/coolsong.mp3")); + player->setVolume(50); + player->play(); + //! [Player] + + //! [Local playback] + player = new QMediaPlayer; + // ... + player->setMedia(QUrl::fromLocalFile("/Users/me/Music/coolsong.mp3")); + player->setVolume(50); + player->play(); + //! [Local playback] + + //! [Audio playlist] + player = new QMediaPlayer; + + playlist = new QMediaPlaylist(player); + playlist->addMedia(QUrl("http://example.com/myfile1.mp3")); + playlist->addMedia(QUrl("http://example.com/myfile2.mp3")); + // ... + playlist->setCurrentIndex(1); + player->play(); + //! [Audio playlist] + + //! [Movie playlist] + playlist = new QMediaPlaylist; + playlist->addMedia(QUrl("http://example.com/movie1.mp4")); + playlist->addMedia(QUrl("http://example.com/movie2.mp4")); + playlist->addMedia(QUrl("http://example.com/movie3.mp4")); + playlist->setCurrentIndex(1); + + player = new QMediaPlayer; + player->setPlaylist(playlist); + + videoWidget = new QVideoWidget; + player->setVideoOutput(videoWidget); + videoWidget->show(); + + player->play(); + //! [Movie playlist] +} + +void MediaExample::MediaRecorder() +{ + //! [Media recorder] + recorder = new QMediaRecorder(camera); + + QAudioEncoderSettings audioSettings; + audioSettings.setCodec("audio/amr"); + audioSettings.setQuality(QMultimedia::HighQuality); + + recorder->setAudioSettings(audioSettings); + + recorder->setOutputLocation(QUrl::fromLocalFile(fileName)); + recorder->record(); + //! [Media recorder] +} + +void MediaExample::AudioRecorder() +{ + //! [Audio recorder] + audioRecorder = new QAudioRecorder; + + QAudioEncoderSettings audioSettings; + audioSettings.setCodec("audio/amr"); + audioSettings.setQuality(QMultimedia::HighQuality); + + audioRecorder->setEncodingSettings(audioSettings); + + audioRecorder->setOutputLocation(QUrl::fromLocalFile("test.amr")); + audioRecorder->record(); + //! [Audio recorder] + + //! [Audio recorder inputs] + QStringList inputs = audioRecorder->audioInputs(); + QString selectedInput = audioRecorder->defaultAudioInput(); + + foreach (QString input, inputs) { + QString description = audioRecorder->audioInputDescription(input); + // show descriptions to user and allow selection + selectedInput = input; + } + + audioRecorder->setAudioInput(selectedInput); + //! [Audio recorder inputs] +} + +void MediaExample::RadioTuna() +{ + //! [Radio tuner] + radio = new QRadioTuner; + connect(radio, SIGNAL(frequencyChanged(int)), this, SLOT(freqChanged(int))); + if (radio->isBandSupported(QRadioTuner::FM)) { + radio->setBand(QRadioTuner::FM); + radio->setFrequency(yourRadioStationFrequency); + radio->setVolume(100); + radio->start(); + } + //! [Radio tuner] + + //! [Radio data setup] + radio = new QRadioTuner; + radioData = radio->radioData(); + //! [Radio data setup] +} + +void MediaExample::AudioProbe() +{ + //! [Audio probe] + audioRecorder = new QAudioRecorder; + + QAudioEncoderSettings audioSettings; + audioSettings.setCodec("audio/amr"); + audioSettings.setQuality(QMultimedia::HighQuality); + + audioRecorder->setEncodingSettings(audioSettings); + + audioRecorder->setOutputLocation(QUrl::fromLocalFile("test.amr")); + + audioProbe = new QAudioProbe(this); + if (audioProbe->setSource(audioRecorder)) { + // Probing succeeded, audioProbe->isValid() should be true. + connect(audioProbe, SIGNAL(audioBufferProbed(QAudioBuffer)), + this, SLOT(calculateLevel(QAudioBuffer))); + } + + audioRecorder->record(); + // Now audio buffers being recorded should be signaled + // by the probe, so we can do things like calculating the + // audio power level, or performing a frequency transform + //! [Audio probe] +} + +void MediaExample::VideoProbe() +{ + //! [Video probe] + camera = new QCamera; + viewfinder = new QCameraViewfinder(); + camera->setViewfinder(viewfinder); + + camera->setCaptureMode(QCamera::CaptureVideo); + + videoProbe = new QVideoProbe(this); + + if (videoProbe->setSource(camera)) { + // Probing succeeded, videoProbe->isValid() should be true. + connect(videoProbe, SIGNAL(videoFrameProbed(QVideoFrame)), + this, SLOT(detectBarcodes(QVideoFrame))); + } + + camera->start(); + // Viewfinder frames should now also be emitted by + // the video probe, even in still image capture mode. + // Another alternative is to install the probe on a + // QMediaRecorder connected to the camera to get the + // recorded frames, if they are different from the + // viewfinder frames. + + //! [Video probe] +} + + diff --git a/src/multimedia/doc/snippets/multimedia-snippets/multimedia-snippets.pro b/src/multimedia/doc/snippets/multimedia-snippets/multimedia-snippets.pro new file mode 100644 index 000000000..9571b026e --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/multimedia-snippets.pro @@ -0,0 +1,24 @@ +# Doc snippets - compiled for truthiness + +TEMPLATE = lib +TARGET = qtmmksnippets + +INCLUDEPATH += ../../../../src/global \ + ../../../../src/multimedia \ + ../../../../src/multimedia/audio \ + ../../../../src/multimedia/video \ + ../../../../src/multimedia/camera + +CONFIG += console + +QT += multimedia multimediawidgets widgets multimedia-private + +SOURCES += \ + audio.cpp \ + video.cpp \ + camera.cpp \ + media.cpp \ + qsound.cpp + +OTHER_FILES += \ + soundeffect.qml diff --git a/src/multimedia/doc/snippets/multimedia-snippets/qsound.cpp b/src/multimedia/doc/snippets/multimedia-snippets/qsound.cpp new file mode 100644 index 000000000..1f7dad79f --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/qsound.cpp @@ -0,0 +1,85 @@ + /**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the documentation of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qobject.h" +#include "qsound.h" +#include "qsoundeffect.h" + +void qsoundsnippet() { + //! [0] + QSound::play("mysounds/bells.wav"); + //! [0] + + + //! [1] + QSound bells("mysounds/bells.wav"); + bells.play(); + //! [1] +} + +void qsoundeffectsnippet() { + //! [2] + QSoundEffect effect; + effect.setSource(QUrl::fromLocalFile("engine.wav")); + effect.setLoopCount(QSoundEffect::Infinite); + effect.setVolume(0.25f); + effect.play(); + //! [2] +} + +QObject *clickSource; + +class MyGame : public QObject { + Q_OBJECT +public: + //! [3] + MyGame() + : m_explosion(this) + { + m_explosion.setSource(QUrl::fromLocalFile("explosion.wav")); + m_explosion.setVolume(0.25f); + + // Set up click handling etc. + connect(clickSource, SIGNAL(clicked()), &m_explosion, SLOT(play())); + } +private: + QSoundEffect m_explosion; + //! [3] +}; diff --git a/src/multimedia/doc/snippets/multimedia-snippets/soundeffect.qml b/src/multimedia/doc/snippets/multimedia-snippets/soundeffect.qml new file mode 100644 index 000000000..9b173a46b --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/soundeffect.qml @@ -0,0 +1,63 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +//! [complete snippet] +import QtQuick 2.0 +import QtMultimedia 5.0 + +Text { + text: "Click Me!"; + font.pointSize: 24; + width: 150; height: 50; + + //! [play sound on click] + SoundEffect { + id: playSound + source: "soundeffect.wav" + } + MouseArea { + id: playArea + anchors.fill: parent + onPressed: { playSound.play() } + } + //! [play sound on click] +} +//! [complete snippet] diff --git a/src/multimedia/doc/snippets/multimedia-snippets/video.cpp b/src/multimedia/doc/snippets/multimedia-snippets/video.cpp new file mode 100644 index 000000000..37dca0851 --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/video.cpp @@ -0,0 +1,193 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* Video related snippets */ +#include "qvideorenderercontrol.h" +#include "qmediaservice.h" +#include "qmediaplayer.h" +#include "qabstractvideosurface.h" +#include "qvideowidgetcontrol.h" +#include "qvideowindowcontrol.h" +#include "qgraphicsvideoitem.h" +#include "qmediaplaylist.h" +#include "qvideosurfaceformat.h" + +#include <QFormLayout> +#include <QGraphicsView> + +//! [Derived Surface] +class MyVideoSurface : public QAbstractVideoSurface +{ + QList<QVideoFrame::PixelFormat> supportedPixelFormats( + QAbstractVideoBuffer::HandleType handleType = QAbstractVideoBuffer::NoHandle) const + { + Q_UNUSED(handleType); + + // Return the formats you will support + return QList<QVideoFrame::PixelFormat>() << QVideoFrame::Format_RGB565; + } + + bool present(const QVideoFrame &frame) + { + Q_UNUSED(frame); + // Handle the frame and do your processing + + return true; + } +}; +//! [Derived Surface] + +//! [Video producer] +class MyVideoProducer : public QObject +{ + Q_OBJECT + Q_PROPERTY(QAbstractVideoSurface *videoSurface WRITE setVideoSurface) + +public: + void setVideoSurface(QAbstractVideoSurface *surface) + { + m_surface = surface; + m_surface->start(m_format); + } + + // ... + +public slots: + void onNewVideoContentReceived(const QVideoFrame &frame) + { + if (m_surface) + m_surface->present(frame); + } + +private: + QAbstractVideoSurface *m_surface; + QVideoSurfaceFormat m_format; +}; + +//! [Video producer] + + +class VideoExample : public QObject { + Q_OBJECT +public: + void VideoGraphicsItem(); + void VideoRendererControl(); + void VideoWidget(); + void VideoWindowControl(); + void VideoWidgetControl(); + +private: + // Common naming + QMediaService *mediaService; + QMediaPlaylist *playlist; + QVideoWidget *videoWidget; + QWidget *widget; + QFormLayout *layout; + QAbstractVideoSurface *myVideoSurface; + QMediaPlayer *player; + QMediaContent video; + QGraphicsView *graphicsView; +}; + +void VideoExample::VideoRendererControl() +{ + //! [Video renderer control] + QVideoRendererControl *rendererControl = mediaService->requestControl<QVideoRendererControl *>(); + rendererControl->setSurface(myVideoSurface); + //! [Video renderer control] +} + +void VideoExample::VideoWidget() +{ + //! [Video widget] + player = new QMediaPlayer; + + playlist = new QMediaPlaylist(player); + playlist->addMedia(QUrl("http://example.com/myclip1.mp4")); + playlist->addMedia(QUrl("http://example.com/myclip2.mp4")); + + videoWidget = new QVideoWidget; + player->setVideoOutput(videoWidget); + + videoWidget->show(); + playlist->setCurrentIndex(1); + player->play(); + //! [Video widget] + + player->stop(); + + //! [Setting surface in player] + player->setVideoOutput(myVideoSurface); + //! [Setting surface in player] +} + +void VideoExample::VideoWidgetControl() +{ + //! [Video widget control] + QVideoWidgetControl *widgetControl = mediaService->requestControl<QVideoWidgetControl *>(); + layout->addWidget(widgetControl->videoWidget()); + //! [Video widget control] +} + +void VideoExample::VideoWindowControl() +{ + //! [Video window control] + QVideoWindowControl *windowControl = mediaService->requestControl<QVideoWindowControl *>(); + windowControl->setWinId(widget->winId()); + windowControl->setDisplayRect(widget->rect()); + windowControl->setAspectRatioMode(Qt::KeepAspectRatio); + //! [Video window control] +} + +void VideoExample::VideoGraphicsItem() +{ + //! [Video graphics item] + player = new QMediaPlayer(this); + + QGraphicsVideoItem *item = new QGraphicsVideoItem; + player->setVideoOutput(item); + graphicsView->scene()->addItem(item); + graphicsView->show(); + + player->setMedia(QUrl("http://example.com/myclip4.ogv")); + player->play(); + //! [Video graphics item] +} |