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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
**
**
****************************************************************************/
#include "avfvideowidget.h"
#import <AVFoundation/AVFoundation.h>
#import <QuartzCore/CATransaction.h>
#if defined(Q_OS_MACOS)
#import <AppKit/AppKit.h>
#else
#import <UIKit/UIKit.h>
#endif
#include <QtCore/QDebug>
#include <QtGui/QResizeEvent>
#include <QtGui/QPaintEvent>
#include <QtGui/QPainter>
QT_USE_NAMESPACE
AVFVideoWidget::AVFVideoWidget(QWidget *parent)
: QWidget(parent)
, m_aspectRatioMode(Qt::KeepAspectRatio)
, m_playerLayer(nullptr)
, m_nativeView(nullptr)
{
setAutoFillBackground(false);
}
AVFVideoWidget::~AVFVideoWidget()
{
#ifdef QT_DEBUG_AVF
qDebug() << Q_FUNC_INFO;
#endif
if (m_playerLayer) {
[m_playerLayer removeFromSuperlayer];
[m_playerLayer release];
}
}
QSize AVFVideoWidget::sizeHint() const
{
return m_nativeSize;
}
Qt::AspectRatioMode AVFVideoWidget::aspectRatioMode() const
{
return m_aspectRatioMode;
}
void AVFVideoWidget::setAspectRatioMode(Qt::AspectRatioMode mode)
{
if (m_aspectRatioMode != mode) {
m_aspectRatioMode = mode;
updateAspectRatio();
}
}
void AVFVideoWidget::setPlayerLayer(AVPlayerLayer *layer)
{
if (m_playerLayer == layer)
return;
if (!m_nativeView) {
//make video widget a native window
#if defined(Q_OS_OSX)
m_nativeView = (NSView*)this->winId();
[m_nativeView setWantsLayer:YES];
#else
m_nativeView = (UIView*)this->winId();
#endif
}
if (m_playerLayer) {
[m_playerLayer removeFromSuperlayer];
[m_playerLayer release];
}
m_playerLayer = layer;
CALayer *nativeLayer = [m_nativeView layer];
if (layer) {
[layer retain];
m_nativeSize = QSize(m_playerLayer.bounds.size.width,
m_playerLayer.bounds.size.height);
updateAspectRatio();
[nativeLayer addSublayer:m_playerLayer];
updatePlayerLayerBounds(this->size());
}
#ifdef QT_DEBUG_AVF
NSArray *sublayers = [nativeLayer sublayers];
qDebug() << "playerlayer: " << "at z:" << [m_playerLayer zPosition]
<< " frame: " << m_playerLayer.frame.size.width << "x" << m_playerLayer.frame.size.height;
qDebug() << "superlayer: " << "at z:" << [nativeLayer zPosition]
<< " frame: " << nativeLayer.frame.size.width << "x" << nativeLayer.frame.size.height;
int i = 0;
for (CALayer *layer in sublayers) {
qDebug() << "layer " << i << ": at z:" << [layer zPosition]
<< " frame: " << layer.frame.size.width << "x" << layer.frame.size.height;
i++;
}
#endif
}
void AVFVideoWidget::resizeEvent(QResizeEvent *event)
{
updatePlayerLayerBounds(event->size());
QWidget::resizeEvent(event);
}
void AVFVideoWidget::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
painter.fillRect(rect(), Qt::black);
QWidget::paintEvent(event);
}
void AVFVideoWidget::updateAspectRatio()
{
if (m_playerLayer) {
switch (m_aspectRatioMode) {
case Qt::IgnoreAspectRatio:
[m_playerLayer setVideoGravity:AVLayerVideoGravityResize];
break;
case Qt::KeepAspectRatio:
[m_playerLayer setVideoGravity:AVLayerVideoGravityResizeAspect];
break;
case Qt::KeepAspectRatioByExpanding:
[m_playerLayer setVideoGravity:AVLayerVideoGravityResizeAspectFill];
break;
default:
break;
}
}
}
void AVFVideoWidget::updatePlayerLayerBounds(const QSize &size)
{
[CATransaction begin];
[CATransaction setDisableActions: YES]; // disable animation/flicks
m_playerLayer.bounds = QRect(QPoint(0, 0), size).toCGRect();
[CATransaction commit];
}
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