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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qandroidsgvideonode.h"
#include <qsgmaterial.h>
#include <qmutex.h>
QT_BEGIN_NAMESPACE
class QAndroidSGVideoNodeMaterialShader : public QSGMaterialShader
{
public:
void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial);
char const *const *attributeNames() const {
static const char *names[] = {
"qt_VertexPosition",
"qt_VertexTexCoord",
0
};
return names;
}
protected:
const char *vertexShader() const {
return
"uniform highp mat4 qt_Matrix; \n"
"uniform highp mat4 texMatrix; \n"
"attribute highp vec4 qt_VertexPosition; \n"
"attribute highp vec2 qt_VertexTexCoord; \n"
"varying highp vec2 qt_TexCoord; \n"
"void main() { \n"
" qt_TexCoord = (texMatrix * vec4(qt_VertexTexCoord, 0.0, 1.0)).xy; \n"
" gl_Position = qt_Matrix * qt_VertexPosition; \n"
"}";
}
const char *fragmentShader() const {
return
"#extension GL_OES_EGL_image_external : require \n"
"uniform samplerExternalOES videoTexture; \n"
"uniform lowp float opacity; \n"
"varying highp vec2 qt_TexCoord; \n"
"void main() \n"
"{ \n"
" gl_FragColor = texture2D(videoTexture, qt_TexCoord) * opacity; \n"
"}";
}
void initialize() {
m_id_matrix = program()->uniformLocation("qt_Matrix");
m_id_texMatrix = program()->uniformLocation("texMatrix");
m_id_texture = program()->uniformLocation("videoTexture");
m_id_opacity = program()->uniformLocation("opacity");
}
int m_id_matrix;
int m_id_texMatrix;
int m_id_texture;
int m_id_opacity;
};
class QAndroidSGVideoNodeMaterial : public QSGMaterial
{
public:
QAndroidSGVideoNodeMaterial()
: m_textureId(0)
{
setFlag(Blending, false);
}
~QAndroidSGVideoNodeMaterial()
{
m_frame = QVideoFrame();
}
QSGMaterialType *type() const {
static QSGMaterialType theType;
return &theType;
}
QSGMaterialShader *createShader() const {
return new QAndroidSGVideoNodeMaterialShader;
}
int compare(const QSGMaterial *other) const {
const QAndroidSGVideoNodeMaterial *m = static_cast<const QAndroidSGVideoNodeMaterial *>(other);
return m_textureId - m->m_textureId;
}
void setVideoFrame(const QVideoFrame &frame) {
QMutexLocker lock(&m_frameMutex);
m_frame = frame;
}
bool updateTexture()
{
QMutexLocker lock(&m_frameMutex);
bool texMatrixDirty = false;
if (m_frame.isValid()) {
QVariantList list = m_frame.handle().toList();
GLuint texId = list.at(0).toUInt();
QMatrix4x4 mat = qvariant_cast<QMatrix4x4>(list.at(1));
texMatrixDirty = texId != m_textureId || mat != m_texMatrix;
m_textureId = texId;
m_texMatrix = mat;
// the texture is already bound and initialized at this point,
// no need to call glTexParams
} else {
m_textureId = 0;
}
return texMatrixDirty;
}
QVideoFrame m_frame;
QMutex m_frameMutex;
GLuint m_textureId;
QMatrix4x4 m_texMatrix;
};
void QAndroidSGVideoNodeMaterialShader::updateState(const RenderState &state,
QSGMaterial *newMaterial,
QSGMaterial *oldMaterial)
{
Q_UNUSED(oldMaterial);
QAndroidSGVideoNodeMaterial *mat = static_cast<QAndroidSGVideoNodeMaterial *>(newMaterial);
program()->setUniformValue(m_id_texture, 0);
if (mat->updateTexture())
program()->setUniformValue(m_id_texMatrix, mat->m_texMatrix);
if (state.isOpacityDirty())
program()->setUniformValue(m_id_opacity, state.opacity());
if (state.isMatrixDirty())
program()->setUniformValue(m_id_matrix, state.combinedMatrix());
}
QAndroidSGVideoNode::QAndroidSGVideoNode(const QVideoSurfaceFormat &format)
: m_format(format)
{
setFlag(QSGNode::OwnsMaterial);
m_material = new QAndroidSGVideoNodeMaterial;
setMaterial(m_material);
}
void QAndroidSGVideoNode::setCurrentFrame(const QVideoFrame &frame)
{
m_material->setVideoFrame(frame);
markDirty(DirtyMaterial);
}
QVideoFrame::PixelFormat QAndroidSGVideoNode::pixelFormat() const
{
return m_format.pixelFormat();
}
QT_END_NAMESPACE
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