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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QANDROIDVIDEOOUTPUT_H
#define QANDROIDVIDEOOUTPUT_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qobject.h>
#include <qsize.h>
#include <qmutex.h>
#include <private/qabstractvideobuffer_p.h>
#include <qmatrix4x4.h>
QT_BEGIN_NAMESPACE
class AndroidSurfaceTexture;
class AndroidSurfaceHolder;
class QOpenGLFramebufferObject;
class QOpenGLShaderProgram;
class QWindow;
class QOpenGLContext;
class QVideoSink;
class QRhi;
class QAndroidVideoOutput : public QObject
{
Q_OBJECT
public:
virtual ~QAndroidVideoOutput() { }
virtual AndroidSurfaceTexture *surfaceTexture() { return 0; }
virtual AndroidSurfaceHolder *surfaceHolder() { return 0; }
virtual bool isReady() { return true; }
virtual void setVideoSize(const QSize &) { }
virtual void stop() { }
virtual void reset() { }
Q_SIGNALS:
void readyChanged(bool);
protected:
QAndroidVideoOutput(QObject *parent) : QObject(parent) { }
};
class OpenGLResourcesDeleter : public QObject
{
Q_OBJECT
public:
void deleteTexture(quint32 id) { QMetaObject::invokeMethod(this, "deleteTextureHelper", Qt::AutoConnection, Q_ARG(quint32, id)); }
void deleteFbo(QOpenGLFramebufferObject *fbo) { QMetaObject::invokeMethod(this, "deleteFboHelper", Qt::AutoConnection, Q_ARG(void *, fbo)); }
void deleteShaderProgram(QOpenGLShaderProgram *prog) { QMetaObject::invokeMethod(this, "deleteShaderProgramHelper", Qt::AutoConnection, Q_ARG(void *, prog)); }
void deleteThis() { QMetaObject::invokeMethod(this, "deleteThisHelper"); }
private:
Q_INVOKABLE void deleteTextureHelper(quint32 id);
Q_INVOKABLE void deleteFboHelper(void *fbo);
Q_INVOKABLE void deleteShaderProgramHelper(void *prog);
Q_INVOKABLE void deleteThisHelper();
};
class QAndroidTextureVideoOutput : public QAndroidVideoOutput
{
Q_OBJECT
public:
explicit QAndroidTextureVideoOutput(QObject *parent = 0);
~QAndroidTextureVideoOutput() override;
QVideoSink *surface() const;
void setSurface(QVideoSink *surface);
AndroidSurfaceTexture *surfaceTexture() override;
bool isReady() override;
void setVideoSize(const QSize &) override;
void stop() override;
void reset() override;
private Q_SLOTS:
void onFrameAvailable();
private:
void initSurfaceTexture();
bool renderFrameToFbo();
void createGLResources();
QMutex m_mutex;
void clearSurfaceTexture();
QVideoSink *m_sink = nullptr;
QSize m_nativeSize;
AndroidSurfaceTexture *m_surfaceTexture = nullptr;
quint32 m_externalTex = 0;
QOpenGLFramebufferObject *m_fbo = nullptr;
QOpenGLShaderProgram *m_program = nullptr;
OpenGLResourcesDeleter *m_glDeleter = nullptr;
QWindow *m_offscreenSurface = nullptr;
QOpenGLContext *m_glContext = nullptr;
friend class AndroidTextureVideoBuffer;
};
class AndroidTextureVideoBuffer : public QAbstractVideoBuffer
{
public:
AndroidTextureVideoBuffer(QRhi *rhi, QAndroidTextureVideoOutput *output, const QSize &size)
: QAbstractVideoBuffer(rhi ? QVideoFrame::RhiTextureHandle : QVideoFrame::NoHandle, rhi)
, m_output(output)
, m_size(size)
{
}
virtual ~AndroidTextureVideoBuffer() {}
QVideoFrame::MapMode mapMode() const override { return m_mapMode; }
MapData map(QVideoFrame::MapMode mode) override;
void unmap() override
{
m_image = QImage();
m_mapMode = QVideoFrame::NotMapped;
}
quint64 textureHandle(int plane) const override;
QMatrix4x4 externalTextureMatrix() const
{
return m_externalMatrix;
}
private:
bool updateFrame()
{
// Even though the texture was updated in a previous call, we need to re-check
// that this has not become a stale buffer, e.g., if the output size changed or
// has since became invalid.
if (!m_output->m_nativeSize.isValid())
return false;
// Size changed
if (m_output->m_nativeSize != m_size)
return false;
// In the unlikely event that we don't have a valid fbo, but have a valid size,
// force an update.
const bool forceUpdate = !m_output->m_fbo;
if (m_textureUpdated && !forceUpdate)
return true;
// update the video texture (called from the render thread)
return (m_textureUpdated = m_output->renderFrameToFbo());
}
QVideoFrame::MapMode m_mapMode = QVideoFrame::NotMapped;
QAndroidTextureVideoOutput *m_output = nullptr;
QImage m_image;
QSize m_size;
mutable QMatrix4x4 m_externalMatrix;
bool m_textureUpdated = false;
};
QT_END_NAMESPACE
#endif // QANDROIDVIDEOOUTPUT_H
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