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Declarative VideoOutput: added support for more rgb formats.

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RGB 565, RGB 32 and BGR 32 formats added,
all of them supported with OpenGL ES.

Change-Id: I026628611c59575af5934bac0a5f95dfbc6770cb
Reviewed-on: http://codereview.qt-project.org/6644
Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
This commit is contained in:
Dmytro Poplavskiy
2011-10-14 12:36:18 +10:00
committed by Qt by Nokia
parent 6b25a189ca
commit 21fbb1d025
5 changed files with 294 additions and 163 deletions
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275
src/imports/multimedia/qsgvideonode_rgb.cpp Normal file
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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qsgvideonode_rgb.h"
#include <QtDeclarative/qsgtexturematerial.h>
#include <QtDeclarative/qsgmaterial.h>
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLFunctions>
#include <QtOpenGL/qglshaderprogram.h>
QList<QVideoFrame::PixelFormat> QSGVideoNodeFactory_RGB::supportedPixelFormats(
QAbstractVideoBuffer::HandleType handleType) const
{
QList<QVideoFrame::PixelFormat> pixelFormats;
if (handleType == QAbstractVideoBuffer::NoHandle) {
pixelFormats.append(QVideoFrame::Format_RGB565);
pixelFormats.append(QVideoFrame::Format_RGB32);
pixelFormats.append(QVideoFrame::Format_ARGB32);
pixelFormats.append(QVideoFrame::Format_BGR32);
pixelFormats.append(QVideoFrame::Format_BGRA32);
}
return pixelFormats;
}
QSGVideoNode *QSGVideoNodeFactory_RGB::createNode(const QVideoSurfaceFormat &format)
{
if (supportedPixelFormats(format.handleType()).contains(format.pixelFormat()))
return new QSGVideoNode_RGB(format);
return 0;
}
class QSGVideoMaterialShader_RGB : public QSGMaterialShader
{
public:
QSGVideoMaterialShader_RGB(QVideoFrame::PixelFormat pixelFormat)
: QSGMaterialShader(),
m_pixelFormat(pixelFormat)
{
}
void updateState(const RenderState &state, QSGMaterial *newMaterial, QSGMaterial *oldMaterial);
virtual char const *const *attributeNames() const {
static const char *names[] = {
"qt_VertexPosition",
"qt_VertexTexCoord",
0
};
return names;
}
protected:
virtual const char *vertexShader() const {
const char *shader =
"uniform highp mat4 qt_Matrix; \n"
"attribute highp vec4 qt_VertexPosition; \n"
"attribute highp vec2 qt_VertexTexCoord; \n"
"varying highp vec2 qt_TexCoord; \n"
"void main() { \n"
" qt_TexCoord = qt_VertexTexCoord; \n"
" gl_Position = qt_Matrix * qt_VertexPosition; \n"
"}";
return shader;
}
virtual const char *fragmentShader() const {
static const char *shader =
"uniform sampler2D rgbTexture;"
"uniform lowp float opacity;"
""
"varying highp vec2 qt_TexCoord;"
""
"void main()"
"{"
" gl_FragColor = texture2D(rgbTexture, qt_TexCoord) * opacity;"
"}";
static const char *colorsSwapShader =
"uniform sampler2D rgbTexture;"
"uniform lowp float opacity;"
""
"varying highp vec2 qt_TexCoord;"
""
"void main()"
"{"
" gl_FragColor = vec4(texture2D(rgbTexture, qt_TexCoord).bgr, 1.0) * opacity;"
"}";
switch (m_pixelFormat) {
case QVideoFrame::Format_RGB32:
case QVideoFrame::Format_ARGB32:
return colorsSwapShader;
default:
return shader;
}
}
virtual void initialize() {
m_id_matrix = program()->uniformLocation("qt_Matrix");
m_id_rgbTexture = program()->uniformLocation("rgbTexture");
m_id_opacity = program()->uniformLocation("opacity");
}
int m_id_matrix;
int m_id_rgbTexture;
int m_id_opacity;
QVideoFrame::PixelFormat m_pixelFormat;
};
class QSGVideoMaterial_RGB : public QSGMaterial
{
public:
QSGVideoMaterial_RGB(const QVideoSurfaceFormat &format) :
m_format(format),
m_textureId(0),
m_opacity(1.0)
{
setFlag(Blending, false);
}
~QSGVideoMaterial_RGB()
{
if (m_textureId)
glDeleteTextures(1, &m_textureId);
}
virtual QSGMaterialType *type() const {
static QSGMaterialType theType;
return &theType;
}
virtual QSGMaterialShader *createShader() const {
return new QSGVideoMaterialShader_RGB(m_format.pixelFormat());
}
virtual int compare(const QSGMaterial *other) const {
const QSGVideoMaterial_RGB *m = static_cast<const QSGVideoMaterial_RGB *>(other);
return m_textureId - m->m_textureId;
}
void updateBlending() {
setFlag(Blending, qFuzzyCompare(m_opacity, qreal(1.0)) ? false : true);
}
void setVideoFrame(const QVideoFrame &frame) {
m_frame = frame;
}
void bind()
{
QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions();
if (m_frame.isValid() && m_frame.map(QAbstractVideoBuffer::ReadOnly)) {
if (m_textureSize != m_frame.size()) {
if (!m_textureSize.isEmpty())
glDeleteTextures(1, &m_textureId);
glGenTextures(1, &m_textureId);
m_textureSize = m_frame.size();
}
GLint dataType = GL_UNSIGNED_BYTE;
GLint dataFormat = GL_RGBA;
if (m_frame.pixelFormat() == QVideoFrame::Format_RGB565) {
dataType = GL_UNSIGNED_SHORT_5_6_5;
dataFormat = GL_RGB;
}
functions->glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_textureId);
glTexImage2D(GL_TEXTURE_2D, 0, dataFormat,
m_textureSize.width(), m_textureSize.height(),
0, dataFormat, dataType, m_frame.bits());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
m_frame.unmap();
m_frame = QVideoFrame();
} else {
functions->glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, m_textureId);
}
}
QVideoFrame m_frame;
QSize m_textureSize;
QVideoSurfaceFormat m_format;
GLuint m_textureId;
qreal m_opacity;
};
QSGVideoNode_RGB::QSGVideoNode_RGB(const QVideoSurfaceFormat &format) :
m_format(format)
{
m_material = new QSGVideoMaterial_RGB(format);
setMaterial(m_material);
}
QSGVideoNode_RGB::~QSGVideoNode_RGB()
{
}
void QSGVideoNode_RGB::setCurrentFrame(const QVideoFrame &frame)
{
m_material->setVideoFrame(frame);
markDirty(DirtyMaterial);
}
void QSGVideoMaterialShader_RGB::updateState(const RenderState &state,
QSGMaterial *newMaterial,
QSGMaterial *oldMaterial)
{
Q_UNUSED(oldMaterial);
QSGVideoMaterial_RGB *mat = static_cast<QSGVideoMaterial_RGB *>(newMaterial);
program()->setUniformValue(m_id_rgbTexture, 0);
mat->bind();
if (state.isOpacityDirty()) {
mat->m_opacity = state.opacity();
mat->updateBlending();
program()->setUniformValue(m_id_opacity, GLfloat(mat->m_opacity));
}
if (state.isMatrixDirty())
program()->setUniformValue(m_id_matrix, state.combinedMatrix());
}