Declarative VideoOutput: added support for more rgb formats.

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>

5 files changed, 294 insertions, 163 deletions

diff --git a/src/imports/multimedia/multimedia.pro b/src/imports/multimedia/multimedia.pro
index f6aa364..2043130 100644
--- a/src/imports/multimedia/multimedia.pro
+++ b/src/imports/multimedia/multimedia.pro
@@ -15,7 +15,7 @@ HEADERS += \
         qdeclarativevideooutput_p.h \
         qsgvideonode_p.h \
         qsgvideonode_i420.h \
-        qsgvideonode_rgb32.h \
+        qsgvideonode_rgb.h \
         qdeclarativeradio_p.h \
         qdeclarativebackgroundaudio_p.h \
         qdeclarativecamera_p.h \
@@ -34,7 +34,7 @@ SOURCES += \
         qdeclarativevideooutput.cpp \
         qsgvideonode.cpp \
         qsgvideonode_i420.cpp \
-        qsgvideonode_rgb32.cpp \
+        qsgvideonode_rgb.cpp \
         qdeclarativeradio.cpp \
         qdeclarativebackgroundaudio.cpp \
         qdeclarativecamera.cpp \
diff --git a/src/imports/multimedia/qdeclarativevideooutput.cpp b/src/imports/multimedia/qdeclarativevideooutput.cpp
index ceefc7e..9bd5eb3 100644
--- a/src/imports/multimedia/qdeclarativevideooutput.cpp
+++ b/src/imports/multimedia/qdeclarativevideooutput.cpp
@@ -42,7 +42,7 @@
 
 #include "qsgvideonode_p.h"
 #include "qsgvideonode_i420.h"
-#include "qsgvideonode_rgb32.h"
+#include "qsgvideonode_rgb.h"
 
 #include <QtDeclarative/qsgitem.h>
 
@@ -161,9 +161,7 @@ QDeclarativeVideoOutput::QDeclarativeVideoOutput(QSGItem *parent) :
             this, SLOT(_q_updateNativeSize(QVideoSurfaceFormat)), Qt::QueuedConnection);
 
     m_videoNodeFactories.append(new QSGVideoNodeFactory_I420);
-#ifndef QT_OPENGL_ES
-    m_videoNodeFactories.append(new QSGVideoNodeFactory_RGB32);
-#endif
+    m_videoNodeFactories.append(new QSGVideoNodeFactory_RGB);
 }
 
 QDeclarativeVideoOutput::~QDeclarativeVideoOutput()
diff --git a/src/imports/multimedia/qsgvideonode_rgb.cpp b/src/imports/multimedia/qsgvideonode_rgb.cpp
new file mode 100644
index 0000000..41d778e
--- /dev/null
+++ b/src/imports/multimedia/qsgvideonode_rgb.cpp
@@ -0,0 +1,275 @@
+/****************************************************************************
+**
+** 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());
+}
diff --git a/src/imports/multimedia/qsgvideonode_rgb32.h b/src/imports/multimedia/qsgvideonode_rgb.h
index b53f38a..cd82adc 100644
--- a/src/imports/multimedia/qsgvideonode_rgb32.h
+++ b/src/imports/multimedia/qsgvideonode_rgb.h
@@ -39,33 +39,36 @@
 **
 ****************************************************************************/
 
-#ifndef QSGVIDEONODE_RGB32_H
-#define QSGVIDEONODE_RGB32_H
+#ifndef QSGVIDEONODE_RGB_H
+#define QSGVIDEONODE_RGB_H
 
 #include "qsgvideonode_p.h"
-#include <QtDeclarative/qsgtexturematerial.h>
+#include <QtMultimedia/qvideosurfaceformat.h>
 
-class QSGVideoTexture_RGB32;
+class QSGVideoMaterial_RGB;
 
-class QSGVideoNode_RGB32 : public QSGVideoNode
+class QSGVideoNode_RGB : public QSGVideoNode
 {
 public:
-    QSGVideoNode_RGB32();
+    QSGVideoNode_RGB(const QVideoSurfaceFormat &format);
+    ~QSGVideoNode_RGB();
 
+    virtual QVideoFrame::PixelFormat pixelFormat() const {
+        return m_format.pixelFormat();
+    }
     void setCurrentFrame(const QVideoFrame &frame);
 
-    QVideoFrame::PixelFormat pixelFormat() const { return QVideoFrame::Format_RGB32; }
-
 private:
-    QSGTextureMaterial m_material;
-    QSGVideoTexture_RGB32 *m_texture;
+    QVideoSurfaceFormat m_format;
+    QSGVideoMaterial_RGB *m_material;
+    QVideoFrame m_frame;
 };
 
-class QSGVideoNodeFactory_RGB32 : public QSGVideoNodeFactory {
+class QSGVideoNodeFactory_RGB : public QSGVideoNodeFactory {
 public:
     QList<QVideoFrame::PixelFormat> supportedPixelFormats(QAbstractVideoBuffer::HandleType handleType) const;
     QSGVideoNode *createNode(const QVideoSurfaceFormat &format);
 };
 
 
-#endif // QSGVIDEONODE_RGB32_H
+#endif // QSGVIDEONODE_RGB_H
diff --git a/src/imports/multimedia/qsgvideonode_rgb32.cpp b/src/imports/multimedia/qsgvideonode_rgb32.cpp
deleted file mode 100644
index dbb2e8b..0000000
--- a/src/imports/multimedia/qsgvideonode_rgb32.cpp
+++ /dev/null
@@ -1,145 +0,0 @@
-/****************************************************************************
-**
-** 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_rgb32.h"
-
-#include <QtDeclarative/qsgtexture.h>
-
-#include <QtGui/QOpenGLContext>
-#include <QtGui/QOpenGLFunctions>
-
-QList<QVideoFrame::PixelFormat> QSGVideoNodeFactory_RGB32::supportedPixelFormats(
-                                    QAbstractVideoBuffer::HandleType handleType) const
-{
-    QList<QVideoFrame::PixelFormat> formats;
-
-    if (handleType == QAbstractVideoBuffer::NoHandle)
-        formats.append(QVideoFrame::Format_RGB32);
-
-    return formats;
-}
-
-QSGVideoNode *QSGVideoNodeFactory_RGB32::createNode(const QVideoSurfaceFormat &format)
-{
-    if (supportedPixelFormats(format.handleType()).contains(format.pixelFormat()))
-        return new QSGVideoNode_RGB32();
-
-    return 0;
-}
-
-
-class QSGVideoTexture_RGB32 : public QSGTexture
-{
-public:
-    QSGVideoTexture_RGB32();
-
-    int textureId() const { return m_textureId; }
-    QSize textureSize() const { return m_size; }
-    bool hasAlphaChannel() const { return false; }
-    bool hasMipmaps() const { return false; }
-
-    void setCurrentFrame(const QVideoFrame &frame) { m_frame = frame; }
-
-    //QRectF textureSubRect() const;
-
-    void bind();
-
-private:
-    QVideoFrame m_frame;
-    GLuint m_textureId;
-    QSize m_size;
-};
-
-QSGVideoTexture_RGB32::QSGVideoTexture_RGB32()
-    : QSGTexture()
-    , m_textureId(0)
-{
-}
-
-void QSGVideoTexture_RGB32::bind()
-{
-    if (m_frame.isValid()) {
-        if (m_size != m_frame.size()) {
-            if (m_textureId)
-                glDeleteTextures(1, &m_textureId);
-            glGenTextures(1, &m_textureId);
-            m_size = m_frame.size();
-        }
-
-        if (m_frame.map(QAbstractVideoBuffer::ReadOnly)) {
-            QOpenGLFunctions *functions = QOpenGLContext::currentContext()->functions();
-            const uchar *bits = m_frame.bits();
-            functions->glActiveTexture(GL_TEXTURE0);
-            glBindTexture(GL_TEXTURE_2D, m_textureId);
-#ifdef QT_OPENGL_ES
-            qWarning() << "RGB video doesn't work on GL ES\n";
-#else
-            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
-                         m_size.width(), m_size.height(),
-                         0, GL_BGRA, GL_UNSIGNED_BYTE, bits);
-#endif
-            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();
-        updateBindOptions(true);
-    } else {
-        glBindTexture(GL_TEXTURE_2D, m_textureId);
-        updateBindOptions(false);
-    }
-}
-
-QSGVideoNode_RGB32::QSGVideoNode_RGB32()
-{
-    setMaterial(&m_material);
-    m_texture = new QSGVideoTexture_RGB32();
-
-    m_material.setTexture(m_texture);
-    m_material.setFiltering(QSGTexture::Linear);
-}
-
-
-void QSGVideoNode_RGB32::setCurrentFrame(const QVideoFrame &frame)
-{
-    m_texture->setCurrentFrame(frame);
-    markDirty(DirtyMaterial);
-}