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QtAV/examples/player/StatisticsView.cpp
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wang-bin 84ed2aa3e1 QT_NO_CAST_FROM_ASCI build error part3: examples
2015-08-08 21:16:28 +08:00

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/******************************************************************************
QtAV Player Demo: this file is part of QtAV examples
Copyright (C) 2012-2015 Wang Bin <wbsecg1@gmail.com>
* This file is part of QtAV
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#include "StatisticsView.h"
#include <QtCore/QTimerEvent>
#include <QTreeWidget>
#include <QTreeWidgetItem>
#include <QLayout>
#include <QHeaderView>
#include <QPushButton>
QStringList getBaseInfoKeys() {
return QStringList()
<< QObject::tr("Url")
<< QObject::tr("Format")
<< QObject::tr("Bit rate")
<< QObject::tr("Start time")
<< QObject::tr("Duration")
;
}
QStringList getCommonInfoKeys() {
return QStringList()
<< QObject::tr("Available")
<< QObject::tr("Codec")
<< QObject::tr("Decoder")
<< QObject::tr("Decoder detail")
<< QObject::tr("Total time")
<< QObject::tr("Start time")
<< QObject::tr("Bit rate")
<< QObject::tr("Frames")
<< QObject::tr("FPS") // avg_frame_rate. guessed by FFmpeg
;
}
QStringList getVideoInfoKeys() {
return getCommonInfoKeys()
<< QObject::tr("FPS Now") //current display fps
<< QObject::tr("Pixel format")
<< QObject::tr("Size") //w x h
<< QObject::tr("Coded size") // w x h
<< QObject::tr("GOP size")
;
}
QStringList getAudioInfoKeys() {
return getCommonInfoKeys()
<< QObject::tr("Sample format")
<< QObject::tr("Sample rate")
<< QObject::tr("Channels")
<< QObject::tr("Channel layout")
<< QObject::tr("Frame size")
;
}
QVariantList getBaseInfoValues(const Statistics& s) {
return QVariantList()
<< s.url
<< s.format
<< QString::number(s.bit_rate/1000).append(QString::fromLatin1(" Kb/s"))
<< s.start_time.toString(QString::fromLatin1("HH:mm:ss"))
<< s.duration.toString(QString::fromLatin1("HH:mm:ss"))
;
}
QList<QVariant> getVideoInfoValues(const Statistics& s) {
return QList<QVariant>()
<< s.video.available
<< QString::fromLatin1("%1 (%2)").arg(s.video.codec).arg(s.video.codec_long)
<< s.video.decoder
<< s.video.decoder_detail
<< s.video.total_time.toString(QString::fromLatin1("HH:mm:ss"))
<< s.video.start_time.toString(QString::fromLatin1("HH:mm:ss"))
<< QString::number(s.video.bit_rate/1000).append(QString::fromLatin1(" Kb/s"))
<< s.video.frames
<< s.video.frame_rate
<< s.video.frame_rate
<< s.video_only.pix_fmt
<< QString::fromLatin1("%1x%2").arg(s.video_only.width).arg(s.video_only.height)
<< QString::fromLatin1("%1x%2").arg(s.video_only.coded_width).arg(s.video_only.coded_height)
<< s.video_only.gop_size
;
}
QList<QVariant> getAudioInfoValues(const Statistics& s) {
return QList<QVariant>()
<< s.audio.available
<< QString::fromLatin1("%1 (%2)").arg(s.audio.codec).arg(s.audio.codec_long)
<< s.audio.decoder
<< s.audio.decoder_detail
<< s.audio.total_time.toString(QString::fromLatin1("HH:mm:ss"))
<< s.audio.start_time.toString(QString::fromLatin1("HH:mm:ss"))
<< QString::number(s.audio.bit_rate/1000).append(QString::fromLatin1(" Kb/s"))
<< s.audio.frames
<< s.audio.frame_rate
<< s.audio_only.sample_fmt
<< QString::number(s.audio_only.sample_rate).append(QString::fromLatin1(" Hz"))
<< s.audio_only.channels
<< s.audio_only.channel_layout
<< s.audio_only.frame_size
;
}
StatisticsView::StatisticsView(QWidget *parent) :
QDialog(parent)
, mTimer(0)
, mpFPS(0)
, mpAudioBitRate(0)
, mpVideoBitRate(0)
{
setWindowTitle(tr("Media info"));
setModal(false);
setWindowFlags(windowFlags() | Qt::WindowStaysOnTopHint);
mpView = new QTreeWidget();
mpView->setAnimated(true);
mpView->setHeaderHidden(false);
mpView->setColumnCount(2);
mpView->headerItem()->setText(0, tr("Key"));
mpView->headerItem()->setText(1, tr("Value"));
initBaseItems(&mBaseItems);
mpView->addTopLevelItems(mBaseItems);
mpMetadata = new QTreeWidgetItem();
mpMetadata->setText(0, QObject::tr("Metadata"));
mpView->addTopLevelItem(mpMetadata);
QTreeWidgetItem *item = createNodeWithItems(mpView, QObject::tr("Video"), getVideoInfoKeys(), &mVideoItems);
mpFPS = item->child(9);
//mpVideoBitRate =
mpVideoMetadata = new QTreeWidgetItem(item);
mpVideoMetadata->setText(0, QObject::tr("Metadata"));
mpView->addTopLevelItem(item);
item = createNodeWithItems(mpView, QObject::tr("Audio"), getAudioInfoKeys(), &mAudioItems);
//mpAudioBitRate =
mpAudioMetadata = new QTreeWidgetItem(item);
mpAudioMetadata->setText(0, QObject::tr("Metadata"));
mpView->addTopLevelItem(item);
mpView->resizeColumnToContents(0); //call this after content is done
QPushButton *btn = new QPushButton(QObject::tr("Ok"));
QHBoxLayout *btnLayout = new QHBoxLayout;
btnLayout->addStretch();
btnLayout->addWidget(btn);
QObject::connect(btn, SIGNAL(clicked()), SLOT(accept()));
QVBoxLayout *vl = new QVBoxLayout();
vl->addWidget(mpView);
vl->addLayout(btnLayout);
setLayout(vl);
}
void StatisticsView::setStatistics(const Statistics& s)
{
mStatistics = s;
QVariantList v = getBaseInfoValues(s);
int i = 0;
foreach(QTreeWidgetItem* item, mBaseItems) {
if (item->data(1, Qt::DisplayRole) != v.at(i)) {
item->setData(1, Qt::DisplayRole, v.at(i));
}
++i;
}
v = getVideoInfoValues(s);
i = 0;
foreach(QTreeWidgetItem* item, mVideoItems) {
if (item->data(1, Qt::DisplayRole) != v.at(i)) {
item->setData(1, Qt::DisplayRole, v.at(i));
}
++i;
}
v = getAudioInfoValues(s);
i = 0;
foreach(QTreeWidgetItem* item, mAudioItems) {
if (item->data(1, Qt::DisplayRole) != v.at(i)) {
item->setData(1, Qt::DisplayRole, v.at(i));
}
++i;
}
setMetadataItem(mpMetadata, s.metadata);
setMetadataItem(mpVideoMetadata, s.video.metadata);
setMetadataItem(mpAudioMetadata, s.audio.metadata);
}
void StatisticsView::hideEvent(QHideEvent *e)
{
QDialog::hideEvent(e);
killTimer(mTimer);
}
void StatisticsView::showEvent(QShowEvent *e)
{
QDialog::showEvent(e);
mTimer = startTimer(1000);
}
void StatisticsView::timerEvent(QTimerEvent *e)
{
if (e->timerId() != mTimer)
return;
if (mpFPS) {
mpFPS->setData(1, Qt::DisplayRole, QString::number(mStatistics.video_only.currentDisplayFPS(), 'f', 2));
}
}
void StatisticsView::initBaseItems(QList<QTreeWidgetItem *> *items)
{
QTreeWidgetItem *item = 0;
foreach(const QString& key, getBaseInfoKeys()) {
item = new QTreeWidgetItem(0);
item->setData(0, Qt::DisplayRole, key);
items->append(item);
}
}
QTreeWidgetItem* StatisticsView::createNodeWithItems(QTreeWidget *view, const QString &name, const QStringList &itemNames, QList<QTreeWidgetItem *> *items)
{
QTreeWidgetItem *nodeItem = new QTreeWidgetItem(view);
nodeItem->setData(0, Qt::DisplayRole, name);
QTreeWidgetItem *item = 0;
foreach(const QString& key, itemNames) {
item = new QTreeWidgetItem(nodeItem);
item->setData(0, Qt::DisplayRole, key);
nodeItem->addChild(item);
if (items)
items->append(item);
}
nodeItem->setExpanded(true);
return nodeItem;
}
void StatisticsView::setMetadataItem(QTreeWidgetItem *parent, const QHash<QString, QString> &metadata)
{
if (parent->childCount() > 0) {
QList<QTreeWidgetItem *> children(parent->takeChildren());
qDeleteAll(children);
}
QHash<QString, QString>::const_iterator it = metadata.constBegin();
for (;it != metadata.constEnd(); ++it) {
QTreeWidgetItem *item = new QTreeWidgetItem(parent);
item->setText(0, it.key());
item->setText(1, it.value());
}
}
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