5e801e2793
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I20e5215108c6ebd5f8474fed5c3665118e4791e6 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
536 lines
16 KiB
C++
536 lines
16 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <qeglimagetexturesurface_p.h>
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#include <qpaintervideosurface_p.h>
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#include <QtCore/qmath.h>
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#include <QtCore/qvariant.h>
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#include <QtCore/qdebug.h>
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#include <QtGui/qpainter.h>
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#include <QtWidgets/qx11info_x11.h>
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#include <qvideosurfaceformat.h>
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QT_BEGIN_NAMESPACE
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//#define DEBUG_OMAPFB_SURFACE
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const QAbstractVideoBuffer::HandleType EGLImageTextureHandle =
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QAbstractVideoBuffer::HandleType(QAbstractVideoBuffer::UserHandle+3434);
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/*!
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\class QOmapFbVideoSurface
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\internal
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*/
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/*!
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*/
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QEglImageTextureSurface::QEglImageTextureSurface(QObject *parent)
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: QAbstractVideoSurface(parent)
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, m_context(0)
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, m_program(0)
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, m_pixelFormat(QVideoFrame::Format_Invalid)
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, m_ready(false)
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, m_colorKey(49,0,49)
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, m_fallbackSurface(0)
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, m_fallbackSurfaceActive(false)
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{
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m_fallbackSurface = new QPainterVideoSurface(this);
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}
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/*!
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*/
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QEglImageTextureSurface::~QEglImageTextureSurface()
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{
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if (isActive())
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stop();
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}
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/*!
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*/
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QList<QVideoFrame::PixelFormat> QEglImageTextureSurface::supportedPixelFormats(
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QAbstractVideoBuffer::HandleType handleType) const
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{
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#ifdef DEBUG_OMAPFB_SURFACE
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qDebug() << Q_FUNC_INFO << handleType;
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#endif
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if (handleType == EGLImageTextureHandle) {
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return QList<QVideoFrame::PixelFormat>()
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<< QVideoFrame::Format_RGB32
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<< QVideoFrame::Format_ARGB32;
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}
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return m_fallbackSurface->supportedPixelFormats(handleType);
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}
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const char *qt_glsl_eglTextureVertexShaderProgram =
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"attribute highp vec4 vertexCoordArray;\n"
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"attribute mediump vec2 textureCoordArray;\n"
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"uniform highp mat4 positionMatrix;\n"
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"varying mediump vec2 textureCoord;\n"
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"void main (void)\n"
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"{\n"
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" gl_Position = positionMatrix * vertexCoordArray;\n"
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" textureCoord = textureCoordArray;\n"
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"}";
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static const char* qt_glsl_eglTextureShaderProgram =
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"#extension GL_OES_EGL_image_external: enable\n"
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"\n"
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"uniform samplerExternalOES texRgb;\n"
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"varying mediump vec2 textureCoord;\n"
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"\n"
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"void main (void)\n"
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"{\n"
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" gl_FragColor = texture2D(texRgb, textureCoord);\n"
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"}";
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/*!
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*/
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bool QEglImageTextureSurface::start(const QVideoSurfaceFormat &format)
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{
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#ifdef DEBUG_OMAPFB_SURFACE
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qDebug() << Q_FUNC_INFO << format;
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#endif
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m_fallbackSurfaceActive = false;
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if (format.handleType() != EGLImageTextureHandle) {
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qWarning() << Q_FUNC_INFO << "Non EGLImageTextureHandle based format requested, fallback to QPainterVideoSurface";
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connect(m_fallbackSurface, SIGNAL(activeChanged(bool)),
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this, SIGNAL(activeChanged(bool)));
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connect(m_fallbackSurface, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)),
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this, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)));
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connect(m_fallbackSurface, SIGNAL(supportedFormatsChanged()),
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this, SIGNAL(supportedFormatsChanged()));
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connect(m_fallbackSurface, SIGNAL(nativeResolutionChanged(QSize)),
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this, SIGNAL(nativeResolutionChanged(QSize)));
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connect(m_fallbackSurface, SIGNAL(frameChanged()),
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this, SIGNAL(frameChanged()));
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if (m_fallbackSurface->start(format)) {
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m_fallbackSurfaceActive = true;
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QAbstractVideoSurface::start(format);
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} else {
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qWarning() << Q_FUNC_INFO << "failed to start video surface:" << m_fallbackSurface->error();
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setError(m_fallbackSurface->error());
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disconnect(m_fallbackSurface, SIGNAL(activeChanged(bool)),
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this, SIGNAL(activeChanged(bool)));
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disconnect(m_fallbackSurface, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)),
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this, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)));
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disconnect(m_fallbackSurface, SIGNAL(supportedFormatsChanged()),
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this, SIGNAL(supportedFormatsChanged()));
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disconnect(m_fallbackSurface, SIGNAL(nativeResolutionChanged(QSize)),
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this, SIGNAL(nativeResolutionChanged(QSize)));
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disconnect(m_fallbackSurface, SIGNAL(frameChanged()),
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this, SIGNAL(frameChanged()));
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}
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return m_fallbackSurfaceActive;
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}
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QAbstractVideoSurface::Error error = NoError;
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if (isActive())
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stop();
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if (format.frameSize().isEmpty()) {
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setError(UnsupportedFormatError);
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} else if (m_context) {
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m_context->makeCurrent();
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m_program = new QGLShaderProgram(m_context, this);
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if (!m_program->addShaderFromSourceCode(QGLShader::Vertex, qt_glsl_eglTextureVertexShaderProgram)) {
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qWarning("QOmapFbVideoSurface: Vertex shader compile error %s",
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qPrintable(m_program->log()));
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error = ResourceError;
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}
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if (error == NoError
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&& !m_program->addShaderFromSourceCode(QGLShader::Fragment, qt_glsl_eglTextureShaderProgram)) {
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qWarning("QOmapFbVideoSurface: Vertex shader compile error %s",
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qPrintable(m_program->log()));
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error = QAbstractVideoSurface::ResourceError;
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}
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if (error == NoError) {
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m_program->bindAttributeLocation("textureCoordArray", 1);
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if(!m_program->link()) {
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qWarning("QOmapFbVideoSurface: Shader link error %s", qPrintable(m_program->log()));
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m_program->removeAllShaders();
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error = QAbstractVideoSurface::ResourceError;
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}
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}
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if (error != QAbstractVideoSurface::NoError) {
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delete m_program;
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m_program = 0;
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}
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}
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if (error == QAbstractVideoSurface::NoError) {
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m_scanLineDirection = format.scanLineDirection();
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m_frameSize = format.frameSize();
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m_pixelFormat = format.pixelFormat();
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m_frameSize = format.frameSize();
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m_sourceRect = format.viewport();
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m_ready = true;
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return QAbstractVideoSurface::start(format);
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}
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QAbstractVideoSurface::stop();
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return false;
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}
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/*!
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*/
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void QEglImageTextureSurface::stop()
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{
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#ifdef DEBUG_OMAPFB_SURFACE
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qDebug() << Q_FUNC_INFO;
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#endif
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if (m_fallbackSurfaceActive) {
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m_fallbackSurface->stop();
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m_fallbackSurfaceActive = false;
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disconnect(m_fallbackSurface, SIGNAL(activeChanged(bool)),
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this, SIGNAL(activeChanged(bool)));
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disconnect(m_fallbackSurface, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)),
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this, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)));
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disconnect(m_fallbackSurface, SIGNAL(supportedFormatsChanged()),
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this, SIGNAL(supportedFormatsChanged()));
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disconnect(m_fallbackSurface, SIGNAL(nativeResolutionChanged(QSize)),
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this, SIGNAL(nativeResolutionChanged(QSize)));
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disconnect(m_fallbackSurface, SIGNAL(frameChanged()),
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this, SIGNAL(frameChanged()));
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m_ready = false;
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QAbstractVideoSurface::stop();
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}
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if (isActive()) {
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if (m_context)
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m_context->makeCurrent();
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m_frame = QVideoFrame();
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m_program->removeAllShaders();
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delete m_program;
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m_program = 0;
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m_ready = false;
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QAbstractVideoSurface::stop();
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}
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}
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/*!
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*/
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bool QEglImageTextureSurface::present(const QVideoFrame &frame)
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{
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if (m_fallbackSurfaceActive) {
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if (m_fallbackSurface->present(frame)) {
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return true;
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} else {
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setError(m_fallbackSurface->error());
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stop();
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return false;
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}
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}
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if (!m_ready) {
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if (!isActive())
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setError(StoppedError);
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else
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m_frame = frame;
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} else if (frame.isValid()
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&& (frame.pixelFormat() != m_pixelFormat || frame.size() != m_frameSize)) {
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setError(IncorrectFormatError);
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qWarning() << "Received frame of incorrect format, stopping the surface";
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stop();
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} else {
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if (m_context)
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m_context->makeCurrent();
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m_frame = frame;
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m_ready = false;
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emit frameChanged();
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return true;
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}
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return false;
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}
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/*!
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*/
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int QEglImageTextureSurface::brightness() const
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{
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return m_fallbackSurface->brightness();
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}
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/*!
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*/
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void QEglImageTextureSurface::setBrightness(int brightness)
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{
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m_fallbackSurface->setBrightness(brightness);
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}
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/*!
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*/
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int QEglImageTextureSurface::contrast() const
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{
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return m_fallbackSurface->contrast();
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}
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/*!
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*/
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void QEglImageTextureSurface::setContrast(int contrast)
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{
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m_fallbackSurface->setContrast(contrast);
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}
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/*!
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*/
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int QEglImageTextureSurface::hue() const
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{
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return m_fallbackSurface->hue();
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}
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/*!
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*/
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void QEglImageTextureSurface::setHue(int hue)
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{
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m_fallbackSurface->setHue(hue);
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}
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/*!
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*/
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int QEglImageTextureSurface::saturation() const
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{
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return m_fallbackSurface->saturation();
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}
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/*!
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*/
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void QEglImageTextureSurface::setSaturation(int saturation)
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{
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m_fallbackSurface->setSaturation(saturation);
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}
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/*!
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*/
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bool QEglImageTextureSurface::isReady() const
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{
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return m_fallbackSurfaceActive ? m_fallbackSurface->isReady() : m_ready;
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}
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/*!
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*/
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void QEglImageTextureSurface::setReady(bool ready)
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{
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m_ready = ready;
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if (m_fallbackSurfaceActive)
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m_fallbackSurface->setReady(ready);
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}
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/*!
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*/
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void QEglImageTextureSurface::paint(QPainter *painter, const QRectF &target, const QRectF &sourceRect)
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{
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if (m_fallbackSurfaceActive) {
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m_fallbackSurface->paint(painter, target, sourceRect);
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return;
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}
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if (!isActive() || !m_frame.isValid()) {
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painter->fillRect(target, QBrush(Qt::black));
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} else {
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const QRectF source(
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m_sourceRect.x() + m_sourceRect.width() * sourceRect.x(),
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m_sourceRect.y() + m_sourceRect.height() * sourceRect.y(),
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m_sourceRect.width() * sourceRect.width(),
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m_sourceRect.height() * sourceRect.height());
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bool stencilTestEnabled = glIsEnabled(GL_STENCIL_TEST);
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bool scissorTestEnabled = glIsEnabled(GL_SCISSOR_TEST);
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painter->beginNativePainting();
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if (stencilTestEnabled)
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glEnable(GL_STENCIL_TEST);
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if (scissorTestEnabled)
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glEnable(GL_SCISSOR_TEST);
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const int width = QGLContext::currentContext()->device()->width();
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const int height = QGLContext::currentContext()->device()->height();
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const QTransform transform = painter->deviceTransform();
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const GLfloat wfactor = 2.0 / width;
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const GLfloat hfactor = -2.0 / height;
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const GLfloat positionMatrix[4][4] =
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{
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{
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/*(0,0)*/ GLfloat(wfactor * transform.m11() - transform.m13()),
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/*(0,1)*/ GLfloat(hfactor * transform.m12() + transform.m13()),
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/*(0,2)*/ 0.0,
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/*(0,3)*/ GLfloat(transform.m13())
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}, {
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/*(1,0)*/ GLfloat(wfactor * transform.m21() - transform.m23()),
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/*(1,1)*/ GLfloat(hfactor * transform.m22() + transform.m23()),
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/*(1,2)*/ 0.0,
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/*(1,3)*/ GLfloat(transform.m23())
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}, {
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/*(2,0)*/ 0.0,
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/*(2,1)*/ 0.0,
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/*(2,2)*/ -1.0,
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/*(2,3)*/ 0.0
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}, {
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/*(3,0)*/ GLfloat(wfactor * transform.dx() - transform.m33()),
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/*(3,1)*/ GLfloat(hfactor * transform.dy() + transform.m33()),
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/*(3,2)*/ 0.0,
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/*(3,3)*/ GLfloat(transform.m33())
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}
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};
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const GLfloat vTop = m_scanLineDirection == QVideoSurfaceFormat::TopToBottom
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? target.top()
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: target.bottom() + 1;
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const GLfloat vBottom = m_scanLineDirection == QVideoSurfaceFormat::TopToBottom
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? target.bottom() + 1
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: target.top();
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const GLfloat vertexCoordArray[] =
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{
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GLfloat(target.left()) , GLfloat(vBottom),
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GLfloat(target.right() + 1), GLfloat(vBottom),
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GLfloat(target.left()) , GLfloat(vTop),
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GLfloat(target.right() + 1), GLfloat(vTop)
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};
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const GLfloat txLeft = source.left() / m_frameSize.width();
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const GLfloat txRight = source.right() / m_frameSize.width();
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const GLfloat txTop = m_scanLineDirection == QVideoSurfaceFormat::TopToBottom
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? source.top() / m_frameSize.height()
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: source.bottom() / m_frameSize.height();
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const GLfloat txBottom = m_scanLineDirection == QVideoSurfaceFormat::TopToBottom
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? source.bottom() / m_frameSize.height()
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: source.top() / m_frameSize.height();
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const GLfloat textureCoordArray[] =
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{
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txLeft , txBottom,
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txRight, txBottom,
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txLeft , txTop,
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txRight, txTop
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};
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m_program->bind();
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m_program->enableAttributeArray("vertexCoordArray");
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m_program->enableAttributeArray("textureCoordArray");
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m_program->setAttributeArray("vertexCoordArray", vertexCoordArray, 2);
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m_program->setAttributeArray("textureCoordArray", textureCoordArray, 2);
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m_program->setUniformValue("positionMatrix", positionMatrix);
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m_program->setUniformValue("texRgb", 0);
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//map() binds the external texture
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m_frame.map(QAbstractVideoBuffer::ReadOnly);
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glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
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//it's necessary to unbind the external texture
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m_frame.unmap();
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m_program->release();
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painter->endNativePainting();
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}
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}
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/*!
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\fn QOmapFbVideoSurface::frameChanged()
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*/
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/*!
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*/
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const QGLContext *QEglImageTextureSurface::glContext() const
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{
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return m_context;
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}
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/*!
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*/
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void QEglImageTextureSurface::setGLContext(QGLContext *context)
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{
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if (m_context == context)
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return;
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stop();
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m_context = context;
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m_fallbackSurface->setGLContext(context);
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if (m_fallbackSurface->supportedShaderTypes() & QPainterVideoSurface::GlslShader) {
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m_fallbackSurface->setShaderType(QPainterVideoSurface::GlslShader);
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} else {
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m_fallbackSurface->setShaderType(QPainterVideoSurface::FragmentProgramShader);
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}
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emit supportedFormatsChanged();
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}
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void QEglImageTextureSurface::viewportDestroyed()
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{
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m_context = 0;
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m_fallbackSurface->viewportDestroyed();
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setError(ResourceError);
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stop();
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}
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#include "moc_qeglimagetexturesurface_p.cpp"
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QT_END_NAMESPACE
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