Move audio and video examples into the common multimedia directory.

Brings the video examples into multimedia directory, and removes the
audio sub-directory so the directory structure is in line with the other
example categories.

Task-number: QT-667
Reviewed-by: Kurt Korbatits

4 files changed, 452 insertions, 0 deletions

diff --git a/examples/multimedia/audiooutput/audiooutput.cpp b/examples/multimedia/audiooutput/audiooutput.cpp
new file mode 100644
index 0000000..9e532cd
--- /dev/null
+++ b/examples/multimedia/audiooutput/audiooutput.cpp
@@ -0,0 +1,270 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QDebug>
+#include <QVBoxLayout>
+
+#include <QAudioOutput>
+#include <QAudioDeviceInfo>
+#include "audiooutput.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#define SECONDS     1
+#define FREQ        600
+#define SYSTEM_FREQ 44100
+
+Generator::Generator(QObject *parent)
+    :QIODevice( parent )
+{
+    finished = false;
+    buffer = new char[SECONDS*SYSTEM_FREQ*4+1000];
+    t=buffer;
+    len=fillData(t,FREQ,SECONDS); /* mono FREQHz sine */
+    pos   = 0;
+    total = len;
+}
+
+Generator::~Generator()
+{
+    delete [] buffer;
+}
+
+void Generator::start()
+{
+    open(QIODevice::ReadOnly);
+}
+
+void Generator::stop()
+{
+    close();
+}
+
+int Generator::putShort(char *t, unsigned int value)
+{
+    *(unsigned char *)(t++)=value&255;
+    *(unsigned char *)(t)=(value/256)&255;
+    return 2;
+}
+
+int Generator::fillData(char *start, int frequency, int seconds)
+{
+    int i, len=0;
+    int value;
+    for(i=0; i<seconds*SYSTEM_FREQ; i++) {
+        value=(int)(32767.0*sin(2.0*M_PI*((double)(i))*(double)(frequency)/SYSTEM_FREQ));
+        putShort(start, value);
+        start += 4;
+        len+=2;
+    }
+    return len;
+}
+
+qint64 Generator::readData(char *data, qint64 maxlen)
+{
+    int len = maxlen;
+    if(len > 16384)
+        len = 16384;
+
+    if(len < (SECONDS*SYSTEM_FREQ*2)-pos) {
+        // Normal
+        memcpy(data,t+pos,len);
+        pos+=len;
+        return len;
+    } else {
+        // Whats left and reset to start
+        qint64 left = (SECONDS*SYSTEM_FREQ*2)-pos;
+        memcpy(data,t+pos,left);
+        pos=0;
+        return left;
+    }
+}
+
+qint64 Generator::writeData(const char *data, qint64 len)
+{
+    Q_UNUSED(data);
+    Q_UNUSED(len);
+
+    return 0;
+}
+
+AudioTest::AudioTest()
+{
+    QWidget *window = new QWidget;
+    QVBoxLayout* layout = new QVBoxLayout;
+
+    deviceBox = new QComboBox(this);
+    foreach (const QAudioDeviceInfo &deviceInfo, QAudioDeviceInfo::deviceList(QAudio::AudioOutput))
+        deviceBox->addItem(deviceInfo.deviceName(), qVariantFromValue(deviceInfo));
+    connect(deviceBox,SIGNAL(activated(int)),SLOT(deviceChanged(int)));
+    layout->addWidget(deviceBox);
+
+    button = new QPushButton(this);
+    button->setText(tr("Click for Push Mode"));
+    connect(button,SIGNAL(clicked()),SLOT(toggle()));
+    layout->addWidget(button);
+
+    button2 = new QPushButton(this);
+    button2->setText(tr("Click To Suspend"));
+    connect(button2,SIGNAL(clicked()),SLOT(togglePlay()));
+    layout->addWidget(button2);
+
+    window->setLayout(layout);
+    setCentralWidget(window);
+    window->show();
+
+    buffer = new char[BUFFER_SIZE];
+
+    gen = new Generator(this);
+
+    pullMode = true;
+
+    timer = new QTimer(this);
+    connect(timer,SIGNAL(timeout()),SLOT(writeMore()));
+
+    gen->start();
+
+    settings.setFrequency(SYSTEM_FREQ);
+    settings.setChannels(1);
+    settings.setSampleSize(16);
+    settings.setCodec("audio/pcm");
+    settings.setByteOrder(QAudioFormat::LittleEndian);
+    settings.setSampleType(QAudioFormat::SignedInt);
+    audioOutput = new QAudioOutput(settings,this);
+    connect(audioOutput,SIGNAL(notify()),SLOT(status()));
+    connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),SLOT(state(QAudio::State)));
+
+    audioOutput->start(gen);
+}
+
+AudioTest::~AudioTest()
+{
+    delete [] buffer;
+}
+
+void AudioTest::deviceChanged(int idx)
+{
+    timer->stop();
+    gen->stop();
+    audioOutput->stop();
+    audioOutput->disconnect(this);
+    delete audioOutput;
+
+    device = deviceBox->itemData(idx).value<QAudioDeviceInfo>();
+    audioOutput = new QAudioOutput(device,settings,this);
+    connect(audioOutput,SIGNAL(notify()),SLOT(status()));
+    connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),SLOT(state(QAudio::State)));
+    gen->start();
+    audioOutput->start(gen);
+}
+
+void AudioTest::status()
+{
+    qWarning()<<"byteFree = "<<audioOutput->bytesFree()<<" bytes, clock = "<<audioOutput->clock()<<"ms, totalTime = "<<audioOutput->totalTime()/1000<<"ms";
+}
+
+void AudioTest::writeMore()
+{
+    if(!audioOutput)
+        return;
+
+    if(audioOutput->state() == QAudio::StopState)
+        return;
+
+    int    l;
+    int    out;
+
+    int chunks = audioOutput->bytesFree()/audioOutput->periodSize();
+    while(chunks) {
+       l = gen->read(buffer,audioOutput->periodSize());
+       if(l > 0)
+           out = output->write(buffer,l);
+       if(l != audioOutput->periodSize())
+	   break;
+       chunks--;
+    }
+}
+
+void AudioTest::toggle()
+{
+    // Change between pull and push modes
+
+    timer->stop();
+    audioOutput->stop();
+
+    if (pullMode) {
+        button->setText("Click for Pull Mode");
+        output = audioOutput->start(0);
+        pullMode = false;
+        timer->start(20);
+    } else {
+        button->setText("Click for Push Mode");
+        pullMode = true;
+        audioOutput->start(gen);
+    }
+}
+
+void AudioTest::togglePlay()
+{
+    // toggle suspend/resume
+    if(audioOutput->state() == QAudio::SuspendState) {
+        qWarning()<<"status: Suspended, resume()";
+        audioOutput->resume();
+        button2->setText("Click To Suspend");
+    } else if (audioOutput->state() == QAudio::ActiveState) {
+        qWarning()<<"status: Active, suspend()";
+        audioOutput->suspend();
+        button2->setText("Click To Resume");
+    } else if (audioOutput->state() == QAudio::StopState) {
+        qWarning()<<"status: Stopped, resume()";
+        audioOutput->resume();
+        button2->setText("Click To Suspend");
+    } else if (audioOutput->state() == QAudio::IdleState) {
+        qWarning()<<"status: IdleState";
+    }
+}
+
+void AudioTest::state(QAudio::State state)
+{
+    qWarning()<<" state="<<state;
+}
diff --git a/examples/multimedia/audiooutput/audiooutput.h b/examples/multimedia/audiooutput/audiooutput.h
new file mode 100644
index 0000000..6c07a3a
--- /dev/null
+++ b/examples/multimedia/audiooutput/audiooutput.h
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <math.h>
+
+#define BUFFER_SIZE 32768
+
+#include <QObject>
+#include <QMainWindow>
+#include <QIODevice>
+#include <QTimer>
+#include <QPushButton>
+#include <QComboBox>
+
+#include <QAudioOutput>
+
+class Generator : public QIODevice
+{
+    Q_OBJECT
+public:
+    Generator(QObject *parent);
+    ~Generator();
+
+    void start();
+    void stop();
+
+    char *t;
+    int  len;
+    int  pos;
+    int  total;
+    char *buffer;
+    bool finished;
+    int  chunk_size;
+
+    qint64 readData(char *data, qint64 maxlen);
+    qint64 writeData(const char *data, qint64 len);
+
+private:
+    int putShort(char *t, unsigned int value);
+    int fillData(char *start, int frequency, int seconds);
+};
+
+class AudioTest : public QMainWindow
+{
+    Q_OBJECT
+public:
+    AudioTest();
+    ~AudioTest();
+
+    QAudioDeviceInfo  device;
+    Generator*        gen;
+    QAudioOutput*     audioOutput;
+    QIODevice*        output;
+    QTimer*           timer;
+    QAudioFormat      settings;
+
+    bool              pullMode;
+    char*             buffer;
+
+    QPushButton*      button;
+    QPushButton*      button2;
+    QComboBox*     deviceBox;
+
+private slots:
+    void status();
+    void writeMore();
+    void toggle();
+    void togglePlay();
+    void state(QAudio::State s);
+    void deviceChanged(int idx);
+};
+
diff --git a/examples/multimedia/audiooutput/audiooutput.pro b/examples/multimedia/audiooutput/audiooutput.pro
new file mode 100644
index 0000000..26f68fe
--- /dev/null
+++ b/examples/multimedia/audiooutput/audiooutput.pro
@@ -0,0 +1,16 @@
+HEADERS       = audiooutput.h
+SOURCES       = audiooutput.cpp \
+                main.cpp
+
+QT           += multimedia
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiooutput
+sources.files = $$SOURCES *.h $$RESOURCES $$FORMS audiooutput.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/multimedia/audiooutput
+INSTALLS += target sources
+
+symbian {
+    TARGET.UID3 = 0xA000D7C0
+    include($$QT_SOURCE_TREE/examples/symbianpkgrules.pri)
+}
diff --git a/examples/multimedia/audiooutput/main.cpp b/examples/multimedia/audiooutput/main.cpp
new file mode 100644
index 0000000..79ec99e
--- /dev/null
+++ b/examples/multimedia/audiooutput/main.cpp
@@ -0,0 +1,56 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtGui>
+
+#include "audiooutput.h"
+
+int main(int argv, char **args)
+{
+    QApplication app(argv, args);
+    app.setApplicationName("Audio Output Test");
+
+    AudioTest audio;
+    audio.show();
+
+    return app.exec();
+}