Long live Qt for S60!

1 files changed, 339 insertions, 0 deletions

diff --git a/src/3rdparty/phonon/gstreamer/glrenderer.cpp b/src/3rdparty/phonon/gstreamer/glrenderer.cpp
new file mode 100644
index 0000000..6cf3459
--- /dev/null
+++ b/src/3rdparty/phonon/gstreamer/glrenderer.cpp
@@ -0,0 +1,339 @@
+/*  This file is part of the KDE project.
+
+    Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+
+    This library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2.1 or 3 of the License.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this library.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <QtGui/QPainter>
+#include <QtGui/QResizeEvent>
+
+#ifndef QT_NO_OPENGL
+
+#include "common.h"
+#include "message.h"
+#include "mediaobject.h"
+#include "qwidgetvideosink.h"
+#include "glrenderer.h"
+#include "qrgb.h"
+
+#if !defined(QT_OPENGL_ES)
+
+#include <gst/gst.h>
+
+// support old OpenGL installations (1.2)
+// assume that if TEXTURE0 isn't defined, none are
+#ifndef GL_TEXTURE0
+# define GL_TEXTURE0    0x84C0
+# define GL_TEXTURE1    0x84C1
+# define GL_TEXTURE2    0x84C2
+#endif
+
+QT_BEGIN_NAMESPACE
+
+static void frameRendered()
+{
+    static QString displayFps = qgetenv("PHONON_GST_FPS");
+    if (displayFps.isEmpty())
+        return;
+
+    static int frames = 0;
+    static QTime lastTime = QTime::currentTime();
+    QTime time = QTime::currentTime();
+
+    int delta = lastTime.msecsTo(time);
+    if (delta > 2000) {
+        printf("FPS: %f\n", 1000.0 * frames / qreal(delta));
+        lastTime = time;
+        frames = 0;
+    }
+
+    ++frames;
+}
+
+namespace Phonon
+{
+namespace Gstreamer
+{
+
+GLRenderer::GLRenderer(VideoWidget* videoWidget) :
+    AbstractRenderer(videoWidget)
+    , m_glWindow(0)
+{
+    videoWidget->backend()->logMessage("Creating OpenGL renderer");
+    QGLFormat format = QGLFormat::defaultFormat();
+    format.setSwapInterval(1);    // Enable vertical sync on draw to avoid tearing
+    m_glWindow = new GLRenderWidgetImplementation(videoWidget, format);
+
+    if ((m_videoSink = m_glWindow->createVideoSink())) {    //if ((m_videoSink = m_glWindow->createVideoSink())) {
+        gst_object_ref (GST_OBJECT (m_videoSink)); //Take ownership
+        gst_object_sink (GST_OBJECT (m_videoSink));
+
+        QWidgetVideoSinkBase*  sink = reinterpret_cast<QWidgetVideoSinkBase*>(m_videoSink);
+        // Let the videosink know which widget to direct frame updates to
+        sink->renderWidget = videoWidget;
+    }
+}
+
+GLRenderer::~GLRenderer()
+{
+    if (m_videoSink) {
+        gst_object_unref (GST_OBJECT (m_videoSink));
+        m_videoSink = 0;
+    }
+}
+
+
+bool GLRenderer::eventFilter(QEvent * event)
+{
+    if (event->type() == QEvent::User) {
+        NewFrameEvent *frameEvent= static_cast <NewFrameEvent *>(event);
+        m_glWindow->setNextFrame(frameEvent->frame, frameEvent->width, frameEvent->height);
+        return true;
+    }
+    else if (event->type() == QEvent::Resize) {
+        m_glWindow->setGeometry(m_videoWidget->geometry());
+        return true;
+    }
+    return false;
+}
+
+void GLRenderer::handleMediaNodeEvent(const MediaNodeEvent *event)
+{
+    switch (event->type()) {
+    case MediaNodeEvent::SourceChanged:
+    {
+        Q_ASSERT(m_glWindow);
+        m_glWindow->clearFrame();
+        break;
+    }
+    default:
+        break;
+    }
+}
+
+GstElement* GLRenderWidgetImplementation::createVideoSink()
+{
+    if (hasYUVSupport())
+        return GST_ELEMENT(g_object_new(get_type_YUV(), NULL));
+    return 0;
+}
+
+void GLRenderWidgetImplementation::setNextFrame(const QByteArray &array, int w, int h)
+{
+    if (m_videoWidget->root()->state() == Phonon::LoadingState)
+        return;
+
+    m_frame = QImage();
+
+    if (hasYUVSupport())
+        updateTexture(array, w, h);
+    else
+        m_frame = QImage((uchar *)array.constData(), w, h, QImage::Format_RGB32);
+
+    m_array = array;
+    m_width = w;
+    m_height = h;
+
+    update();
+}
+
+void GLRenderWidgetImplementation::clearFrame()
+{
+    m_frame = QImage();
+    m_array = QByteArray();
+    update();
+}
+
+bool GLRenderWidgetImplementation::hasYUVSupport() const
+{
+    return m_yuvSupport;
+}
+
+static QImage convertFromYUV(const QByteArray &array, int w, int h)
+{
+    QImage result(w, h, QImage::Format_RGB32);
+
+    // TODO: bilinearly interpolate the U and V channels for better result
+
+    for (int y = 0; y < h; ++y) {
+        uint *sp = (uint *)result.scanLine(y);
+
+        const uchar *yp = (const uchar *)(array.constData() + y * w);
+        const uchar *up = (const uchar *)(array.constData() + w * h + (y/2)*(w/2));
+        const uchar *vp = (const uchar *)(array.constData() + w * h * 5/4 + (y/2)*(w/2));
+
+        for (int x = 0; x < w; ++x) {
+            const int sy = *yp;
+            const int su = *up;
+            const int sv = *vp;
+
+            const int R = int(1.164 * (sy - 16) + 1.596 * (sv - 128));
+            const int G = int(1.164 * (sy - 16) - 0.813 * (sv - 128) - 0.391 * (su - 128));
+            const int B = int(1.164 * (sy - 16)                      + 2.018 * (su - 128));
+
+            *sp = qRgb(qBound(0, R, 255),
+                       qBound(0, G, 255),
+                       qBound(0, B, 255));
+
+            ++yp;
+            ++sp;
+            if (x & 1) {
+                ++up;
+                ++vp;
+            }
+        }
+    }
+    return result;
+}
+
+const QImage &GLRenderWidgetImplementation::currentFrame() const
+{
+    if (m_frame.isNull() && !m_array.isNull())
+        m_frame = convertFromYUV(m_array, m_width, m_height);
+
+    return m_frame;
+}
+
+#ifndef GL_FRAGMENT_PROGRAM_ARB
+#define GL_FRAGMENT_PROGRAM_ARB           0x8804
+#define GL_PROGRAM_FORMAT_ASCII_ARB       0x8875
+#endif
+
+// arbfp1 fragment program for converting yuv to rgb
+const char *const yuvToRgb =
+    "!!ARBfp1.0"
+    "PARAM c[3] = { { 0.5, 0.0625 },"
+    "{ 1.164, 0, 1.596, 2.0179999 },"
+    "{ 1.164, -0.391, -0.81300002 } };"
+    "TEMP R0;"
+    "TEMP R1;"
+    "TEX R0.x, fragment.texcoord[0], texture[2], 2D;"
+    "ADD R1.z, R0.x, -c[0].x;"
+    "TEX R1.x, fragment.texcoord[0], texture[0], 2D;"
+    "TEX R0.x, fragment.texcoord[0], texture[1], 2D;"
+    "ADD R1.x, R1, -c[0].y;"
+    "ADD R1.y, R0.x, -c[0].x;"
+    "DP3 result.color.x, R1, c[1];"
+    "DP3 result.color.y, R1, c[2];"
+    "DP3 result.color.z, R1, c[1].xwyw;"
+    "END";
+
+GLRenderWidgetImplementation::GLRenderWidgetImplementation(VideoWidget*videoWidget, const QGLFormat &format) :
+        QGLWidget(format, videoWidget)
+        , m_program(0)
+        , m_yuvSupport(false)
+        , m_videoWidget(videoWidget)
+{
+    makeCurrent();
+    glGenTextures(3, m_texture);
+
+    glProgramStringARB = (_glProgramStringARB) context()->getProcAddress(QLatin1String("glProgramStringARB"));
+    glBindProgramARB = (_glBindProgramARB) context()->getProcAddress(QLatin1String("glBindProgramARB"));
+    glDeleteProgramsARB = (_glDeleteProgramsARB) context()->getProcAddress(QLatin1String("glDeleteProgramsARB"));
+    glGenProgramsARB = (_glGenProgramsARB) context()->getProcAddress(QLatin1String("glGenProgramsARB"));
+    glActiveTexture = (_glActiveTexture) context()->getProcAddress(QLatin1String("glActiveTexture"));
+
+    m_hasPrograms = glProgramStringARB && glBindProgramARB && glDeleteProgramsARB && glGenProgramsARB && glActiveTexture;
+
+    if (m_hasPrograms) {
+        glGenProgramsARB(1, &m_program);
+        glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, m_program);
+
+        const GLbyte *gl_src = reinterpret_cast<const GLbyte *>(yuvToRgb);
+        glProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+                           int(strlen(yuvToRgb)), gl_src);
+
+        if (glGetError() != GL_NO_ERROR) {
+            glDeleteProgramsARB(1, &m_program);
+            m_hasPrograms = false;
+        } else {
+            m_yuvSupport = true;
+        }
+    }
+
+    QPalette palette;
+    palette.setColor(QPalette::Background, Qt::black);
+    setPalette(palette);
+    setAutoFillBackground(true);
+    // Videowidget allways have this property to allow hiding the mouse cursor
+    setMouseTracking(true);
+}
+
+void GLRenderWidgetImplementation::updateTexture(const QByteArray &array, int width, int height)
+{
+    m_width = width;
+    m_height = height;
+
+    makeCurrent();
+
+    int w[3] = { width, width/2, width/2 };
+    int h[3] = { height, height/2, height/2 };
+    int offs[3] = { 0, width*height, width*height*5/4 };
+
+    for (int i = 0; i < 3; ++i) {
+        glBindTexture(GL_TEXTURE_2D, m_texture[i]);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_LUMINANCE, w[i], h[i], 0,
+                     GL_LUMINANCE, GL_UNSIGNED_BYTE, array.data() + offs[i]);
+
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
+    }
+}
+
+void GLRenderWidgetImplementation::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+    m_drawFrameRect = m_videoWidget->calculateDrawFrameRect();
+    if (m_yuvSupport && frameIsSet()) {
+        glEnable(GL_FRAGMENT_PROGRAM_ARB);
+        glBindProgramARB(GL_FRAGMENT_PROGRAM_ARB, m_program);
+        const float tx_array[] = { 0, 0, 1, 0, 1, 1, 0, 1};
+        const QRectF r = drawFrameRect();
+
+        const float v_array[] = { r.left(), r.top(), r.right(), r.top(), r.right(), r.bottom(), r.left(), r.bottom() };
+
+        glActiveTexture(GL_TEXTURE0);
+        glBindTexture(GL_TEXTURE_2D, m_texture[0]);
+        glActiveTexture(GL_TEXTURE1);
+        glBindTexture(GL_TEXTURE_2D, m_texture[1]);
+        glActiveTexture(GL_TEXTURE2);
+        glBindTexture(GL_TEXTURE_2D, m_texture[2]);
+        glActiveTexture(GL_TEXTURE0);
+
+        glVertexPointer(2, GL_FLOAT, 0, v_array);
+        glTexCoordPointer(2, GL_FLOAT, 0, tx_array);
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDrawArrays(GL_QUADS, 0, 4);
+        glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+        glDisableClientState(GL_VERTEX_ARRAY);
+
+        glDisable(GL_FRAGMENT_PROGRAM_ARB);
+    } else {
+        painter.setRenderHint(QPainter::SmoothPixmapTransform);
+        painter.drawImage(drawFrameRect(), currentFrame());
+    }
+
+    frameRendered();
+}
+}
+} //namespace Phonon::Gstreamer
+
+QT_END_NAMESPACE
+
+#endif // QT_OPENGL_ES
+#endif // QT_NO_OPENGL