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Multimedia: examples coding style unification

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Change-Id: Iffae3a276bb2b01f871aee76dc069ce006d69fce
Reviewed-by: David Schulz <david.schulz@digia.com>
This commit is contained in:
hjk
2012-11-20 18:27:28 +01:00
committed by The Qt Project
parent 9f4d6e824c
commit 21c3915205
69 changed files with 394 additions and 466 deletions
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57
examples/audiorecorder/audiorecorder.cpp
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@@ -38,12 +38,11 @@
**
****************************************************************************/
#include <QtCore/qdir.h>
#include <QtWidgets/qfiledialog.h>
#include <qaudiorecorder.h>
#include <qmediarecorder.h>
#include <qaudioprobe.h>
#include <QAudioProbe>
#include <QAudioRecorder>
#include <QDir>
#include <QFileDialog>
#include <QMediaRecorder>
#include "audiorecorder.h"
@@ -53,8 +52,13 @@
#include "ui_audiorecorder.h"
#endif
AudioRecorder::AudioRecorder(QWidget *parent)
:
static qreal getPeakValue(const QAudioFormat &format);
static qreal getBufferLevel(const QAudioBuffer &buffer);
template <class T>
static qreal getBufferLevel(const T *buffer, int samples);
AudioRecorder::AudioRecorder(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::AudioRecorder),
outputLocationSet(false)
@@ -63,7 +67,7 @@ AudioRecorder::AudioRecorder(QWidget *parent)
audioRecorder = new QAudioRecorder(this);
probe = new QAudioProbe;
connect(probe, SIGNAL(audioBufferProbed(const QAudioBuffer&)), this, SLOT(processBuffer(QAudioBuffer)));
connect(probe, SIGNAL(audioBufferProbed(QAudioBuffer)), this, SLOT(processBuffer(QAudioBuffer)));
probe->setSource(audioRecorder);
//audio devices
@@ -216,19 +220,20 @@ QUrl AudioRecorder::generateAudioFilePath()
int lastImage = 0;
int fileCount = 0;
foreach(QString fileName, outputDir.entryList(QStringList() << "testclip_*")) {
foreach (const QString &fileName, outputDir.entryList(QStringList(QString("testclip_*")))) {
int imgNumber = fileName.mid(5, fileName.size() - 9).toInt();
lastImage = qMax(lastImage, imgNumber);
if (outputDir.exists(fileName))
fileCount += 1;
}
lastImage += fileCount;
QUrl location(QDir::toNativeSeparators(outputDir.canonicalPath() + QString("/testclip_%1").arg(lastImage + 1, 4, 10, QLatin1Char('0'))));
QUrl location(QDir::toNativeSeparators(outputDir.canonicalPath()
+ QString("/testclip_%1").arg(lastImage + 1, 4, 10, QLatin1Char('0'))));
return location;
}
// This function returns the maximum possible sample value for a given audio format
qreal AudioRecorder::GetPeakValue(const QAudioFormat& format)
qreal getPeakValue(const QAudioFormat& format)
{
// Note: Only the most common sample formats are supported
if (!format.isValid())
@@ -247,9 +252,9 @@ qreal AudioRecorder::GetPeakValue(const QAudioFormat& format)
case QAudioFormat::SignedInt:
if (format.sampleSize() == 32)
return 2147483648.0;
else if (format.sampleSize() == 16)
if (format.sampleSize() == 16)
return 32768.0;
else if (format.sampleSize() == 8)
if (format.sampleSize() == 8)
return 128.0;
break;
case QAudioFormat::UnSignedInt:
@@ -260,7 +265,7 @@ qreal AudioRecorder::GetPeakValue(const QAudioFormat& format)
return 0.0;
}
qreal AudioRecorder::GetBufferLevel(const QAudioBuffer& buffer)
qreal getBufferLevel(const QAudioBuffer& buffer)
{
if (!buffer.format().isValid() || buffer.format().byteOrder() != QAudioFormat::LittleEndian)
return 0.0;
@@ -268,7 +273,7 @@ qreal AudioRecorder::GetBufferLevel(const QAudioBuffer& buffer)
if (buffer.format().codec() != "audio/pcm")
return 0.0;
qreal peak_value = GetPeakValue(buffer.format());
qreal peak_value = getPeakValue(buffer.format());
if (qFuzzyCompare(peak_value, 0.0))
return 0.0;
@@ -278,15 +283,15 @@ qreal AudioRecorder::GetBufferLevel(const QAudioBuffer& buffer)
break;
case QAudioFormat::Float:
if (buffer.format().sampleSize() == 32)
return GetBufferLevel(buffer.constData<float>(), buffer.sampleCount()) / peak_value;
return getBufferLevel(buffer.constData<float>(), buffer.sampleCount()) / peak_value;
break;
case QAudioFormat::SignedInt:
if (buffer.format().sampleSize() == 32)
return GetBufferLevel(buffer.constData<long int>(), buffer.sampleCount()) / peak_value;
else if (buffer.format().sampleSize() == 16)
return GetBufferLevel(buffer.constData<short int>(), buffer.sampleCount()) / peak_value;
else if (buffer.format().sampleSize() == 8)
return GetBufferLevel(buffer.constData<signed char>(), buffer.sampleCount()) / peak_value;
return getBufferLevel(buffer.constData<long int>(), buffer.sampleCount()) / peak_value;
if (buffer.format().sampleSize() == 16)
return getBufferLevel(buffer.constData<short int>(), buffer.sampleCount()) / peak_value;
if (buffer.format().sampleSize() == 8)
return getBufferLevel(buffer.constData<signed char>(), buffer.sampleCount()) / peak_value;
break;
}
@@ -294,12 +299,12 @@ qreal AudioRecorder::GetBufferLevel(const QAudioBuffer& buffer)
}
template <class T>
qreal AudioRecorder::GetBufferLevel(const T* buffer, int samples)
qreal getBufferLevel(const T *buffer, int samples)
{
qreal max_value = 0.0;
for (int i = 0; i < samples; i++) {
qreal value = qAbs((qreal)buffer[i]);
for (int i = 0; i < samples; ++i) {
qreal value = qAbs(qreal(buffer[i]));
if (value > max_value)
max_value = value;
}
@@ -309,6 +314,6 @@ qreal AudioRecorder::GetBufferLevel(const T* buffer, int samples)
void AudioRecorder::processBuffer(const QAudioBuffer& buffer)
{
qreal level = GetBufferLevel(buffer);
qreal level = getBufferLevel(buffer);
ui->audioLevel->setLevel(level);
}