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update videotest5 code.

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This commit is contained in:
tianduanrui 2019-09-08 09:15:01 +08:00
parent 248bd8397e
commit 5ebd3df8bd
5 changed files with 108 additions and 31 deletions
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18
test/videotest5/mainwindow.cpp
View File

@ -6,9 +6,27 @@ MainWindow::MainWindow(QWidget *parent) :
ui ( new Ui::MainWindow )
{
ui->setupUi ( this );
manager = new QQtV4L2VideoManager ( this );
connect ( manager, SIGNAL ( readyRead ( QImage ) ), this, SLOT ( slotCaptured ( QImage ) ) );
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_pushButton_clicked()
{
manager->startCapture();
}
void MainWindow::on_pushButton_2_clicked()
{
manager->stopCapture();
}
void MainWindow::slotCaptured ( const QImage& img )
{
ui->widget->setPixmap ( img );
}

8
test/videotest5/mainwindow.h
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@ -2,6 +2,7 @@
#define MAINWINDOW_H
#include <QMainWindow>
#include <qqtv4l2videomanager.h>
namespace Ui {
class MainWindow;
@ -15,8 +16,15 @@ public:
explicit MainWindow ( QWidget* parent = 0 );
~MainWindow();
private slots:
void on_pushButton_clicked();
void on_pushButton_2_clicked();
void slotCaptured ( const QImage& img );
private:
Ui::MainWindow* ui;
QQtV4L2VideoManager* manager;
};
#endif // MAINWINDOW_H

48
test/videotest5/mainwindow.ui
View File

@ -6,20 +6,52 @@
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<height>300</height>
<width>176</width>
<height>328</height>
</rect>
</property>
<property name="windowTitle">
<string>videotest5</string>
</property>
<widget class="QWidget" name="centralWidget"/>
<widget class="QWidget" name="centralWidget">
<layout class="QGridLayout" name="gridLayout">
<item row="0" column="0" colspan="2">
<widget class="QQtWidget" name="widget" native="true"/>
</item>
<item row="1" column="0">
<widget class="QPushButton" name="pushButton">
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>Start</string>
</property>
</widget>
</item>
<item row="1" column="1">
<widget class="QPushButton" name="pushButton_2">
<property name="sizePolicy">
<sizepolicy hsizetype="Fixed" vsizetype="Fixed">
<horstretch>0</horstretch>
<verstretch>0</verstretch>
</sizepolicy>
</property>
<property name="text">
<string>Stop</string>
</property>
</widget>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menuBar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>400</width>
<width>176</width>
<height>17</height>
</rect>
</property>
@ -35,6 +67,14 @@
<widget class="QStatusBar" name="statusBar"/>
</widget>
<layoutdefault spacing="6" margin="11"/>
<customwidgets>
<customwidget>
<class>QQtWidget</class>
<extends>QWidget</extends>
<header>qqtwidget.h</header>
<container>1</container>
</customwidget>
</customwidgets>
<resources/>
<connections/>
</ui>

17
test/videotest5/qqtv4l2videomanager.cpp
View File

@ -1,18 +1,21 @@
#include <qqtv4l2videomanager.h>
#include <linux/videodev2.h>
QQtV4L2VideoManager::QQtV4L2VideoManager ( QObject* parent ) : QObject ( parent )
{
handler = 0;
pp = 0;
frame = 0;
mDevName = "/dev/video0";
mSize = QSize ( 720, 480 );
mFormat = 0; //NV21? YUV? RGB?
mRate = 30;
mFormat = V4L2_PIX_FMT_NV21; //NV21? YUV? RGB?
mRate = 10;
timer = new QTimer ( this );
timer->setSingleShot ( false );
timer->setInterval(200);
timer->setInterval ( 100 );
connect ( timer, SIGNAL ( timeout() ), this, SLOT ( slotGetCapture() ) );
}
@ -42,11 +45,13 @@ void QQtV4L2VideoManager::startCapture()
{
if ( handler )
capture_close ( handler );
struct cap_param param;
param.dev_name = mDevName.toLocal8Bit().data();
param.width = mSize.width();
param.height = mSize.height();
param.rate = mRate;
param.pixfmt = mFormat;
handler = capture_open ( param );
pp = ( unsigned char* ) malloc ( param.width * param.height * 3 * sizeof ( char ) );
@ -56,8 +61,14 @@ void QQtV4L2VideoManager::startCapture()
void QQtV4L2VideoManager::stopCapture()
{
timer->stop();
if ( handler )
capture_close ( handler );
if ( pp )
free ( pp );
if ( frame )
delete frame;
}
int QQtV4L2VideoManager::convert_yuv_to_rgb_pixel ( int y, int u, int v )