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QuickFBORenderer.cpp
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QuickFBORenderer.cpp
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/******************************************************************************
QtAV: Multimedia framework based on Qt and FFmpeg
Copyright (C) 2012-2016 Wang Bin <[email protected]>
* This file is part of QtAV (from 2015)
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 of the License, or (at your option) any later version.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
******************************************************************************/
#include "QmlAV/QuickFBORenderer.h"
#include "QmlAV/QmlAVPlayer.h"
#include "QtAV/AVPlayer.h"
#include "QtAV/OpenGLVideo.h"
#include "QtAV/private/VideoRenderer_p.h"
#include "QtAV/private/mkid.h"
#include "QtAV/private/factory.h"
#include <QtCore/QCoreApplication>
#include <QtGui/QOpenGLFunctions>
#include <QtGui/QOpenGLFramebufferObject>
#include <QtQuick/QQuickWindow>
// for dynamicgl. qglfunctions before qt5.3 does not have portable gl functions
#ifdef QT_OPENGL_DYNAMIC
#include <QtGui/QOpenGLFunctions>
#define DYGL(glFunc) QOpenGLContext::currentContext()->functions()->glFunc
#else
#define DYGL(glFunc) glFunc
#endif
namespace QtAV {
static const VideoRendererId VideoRendererId_QuickFBO = mkid::id32base36_4<'Q','F','B','O'>::value;
FACTORY_REGISTER(VideoRenderer, QuickFBO, "QuickFBO")
class FBORenderer : public QQuickFramebufferObject::Renderer
{
public:
FBORenderer(QuickFBORenderer* item) : m_item(item) {}
QOpenGLFramebufferObject* createFramebufferObject(const QSize &size) Q_DECL_OVERRIDE {
m_item->fboSizeChanged(size);
return QQuickFramebufferObject::Renderer::createFramebufferObject(size);
}
void render() Q_DECL_OVERRIDE {
Q_ASSERT(m_item);
m_item->renderToFbo(framebufferObject());
}
void synchronize(QQuickFramebufferObject *item) Q_DECL_OVERRIDE {
m_item = static_cast<QuickFBORenderer*>(item);
}
private:
QuickFBORenderer *m_item;
};
class QuickFBORendererPrivate : public VideoRendererPrivate
{
public:
QuickFBORendererPrivate():
VideoRendererPrivate()
, frame_changed(false)
, opengl(true)
, fill_mode(QuickFBORenderer::PreserveAspectFit)
, node(0)
, source(0)
, glctx(0)
{}
void setupAspectRatio() { //TODO: call when out_rect, renderer_size, orientation changed
matrix.setToIdentity();
matrix.scale((GLfloat)out_rect.width()/(GLfloat)renderer_width, (GLfloat)out_rect.height()/(GLfloat)renderer_height, 1);
if (orientation)
matrix.rotate(orientation, 0, 0, 1); // Z axis
// FIXME: why x/y is mirrored?
if (orientation0)
matrix.scale(-1, 1);
else
matrix.scale(1, -1);
}
bool frame_changed;
bool opengl;
QuickFBORenderer::FillMode fill_mode;
QSGNode *node;
QObject *source;
QOpenGLContext *glctx;
QMatrix4x4 matrix;
OpenGLVideo glv;
QOpenGLFramebufferObject *fbo;
QList<QuickVideoFilter*> filters;
};
QuickFBORenderer::QuickFBORenderer(QQuickItem *parent)
: QQuickFramebufferObject(parent)
, VideoRenderer(*new QuickFBORendererPrivate())
{
setPreferredPixelFormat(VideoFormat::Format_YUV420P);
}
VideoRendererId QuickFBORenderer::id() const
{
return VideoRendererId_QuickFBO;
}
QQuickFramebufferObject::Renderer* QuickFBORenderer::createRenderer() const
{
return new FBORenderer((QuickFBORenderer*)this);
}
bool QuickFBORenderer::isSupported(VideoFormat::PixelFormat pixfmt) const
{
if (pixfmt == VideoFormat::Format_RGB48BE)
return false;
if (!isOpenGL())
return VideoFormat::isRGB(pixfmt);
return OpenGLVideo::isSupported(pixfmt);
}
OpenGLVideo* QuickFBORenderer::opengl() const
{
return const_cast<OpenGLVideo*>(&d_func().glv);
}
bool QuickFBORenderer::receiveFrame(const VideoFrame &frame)
{
DPTR_D(QuickFBORenderer);
d.video_frame = frame;
d.frame_changed = true;
// update(); // why update slow? because of calling in a different thread?
//QMetaObject::invokeMethod(this, "update"); // slower than directly postEvent
QCoreApplication::postEvent(this, new QEvent(QEvent::User));
return true;
}
QObject* QuickFBORenderer::source() const
{
return d_func().source;
}
void QuickFBORenderer::setSource(QObject *source)
{
DPTR_D(QuickFBORenderer);
if (d.source == source)
return;
d.source = source;
Q_EMIT sourceChanged();
if (!source)
return;
((QmlAVPlayer*)source)->player()->addVideoRenderer(this);
}
QuickFBORenderer::FillMode QuickFBORenderer::fillMode() const
{
return d_func().fill_mode;
}
void QuickFBORenderer::setFillMode(FillMode mode)
{
DPTR_D(QuickFBORenderer);
if (d.fill_mode == mode)
return;
d_func().fill_mode = mode;
updateRenderRect();
Q_EMIT fillModeChanged(mode);
}
QRectF QuickFBORenderer::contentRect() const
{
return videoRect();
}
QRectF QuickFBORenderer::sourceRect() const
{
return QRectF(QPointF(), videoFrameSize());
}
QPointF QuickFBORenderer::mapPointToItem(const QPointF &point) const
{
if (videoFrameSize().isEmpty())
return QPointF();
// Just normalize and use that function
// m_nativeSize is transposed in some orientations
if (orientation()0 == 0)
return mapNormalizedPointToItem(QPointF(point.x() / videoFrameSize().width(), point.y() / videoFrameSize().height()));
else
return mapNormalizedPointToItem(QPointF(point.x() / videoFrameSize().height(), point.y() / videoFrameSize().width()));
}
QRectF QuickFBORenderer::mapRectToItem(const QRectF &rectangle) const
{
return QRectF(mapPointToItem(rectangle.topLeft()),
mapPointToItem(rectangle.bottomRight())).normalized();
}
QPointF QuickFBORenderer::mapNormalizedPointToItem(const QPointF &point) const
{
qreal dx = point.x();
qreal dy = point.y();
if (orientation()0 == 0) {
dx *= contentRect().width();
dy *= contentRect().height();
} else {
dx *= contentRect().height();
dy *= contentRect().width();
}
switch (orientation()) {
case 0:
default:
return contentRect().topLeft() QPointF(dx, dy);
case 90:
return contentRect().bottomLeft() QPointF(dy, -dx);
case 180:
return contentRect().bottomRight() QPointF(-dx, -dy);
case 270:
return contentRect().topRight() QPointF(-dy, dx);
}
}
QRectF QuickFBORenderer::mapNormalizedRectToItem(const QRectF &rectangle) const
{
return QRectF(mapNormalizedPointToItem(rectangle.topLeft()),
mapNormalizedPointToItem(rectangle.bottomRight())).normalized();
}
QPointF QuickFBORenderer::mapPointToSource(const QPointF &point) const
{
QPointF norm = mapPointToSourceNormalized(point);
if (orientation()0 == 0)
return QPointF(norm.x() * videoFrameSize().width(), norm.y() * videoFrameSize().height());
else
return QPointF(norm.x() * videoFrameSize().height(), norm.y() * videoFrameSize().width());
}
QRectF QuickFBORenderer::mapRectToSource(const QRectF &rectangle) const
{
return QRectF(mapPointToSource(rectangle.topLeft()),
mapPointToSource(rectangle.bottomRight())).normalized();
}
QPointF QuickFBORenderer::mapPointToSourceNormalized(const QPointF &point) const
{
if (contentRect().isEmpty())
return QPointF();
// Normalize the item source point
qreal nx = (point.x() - contentRect().x()) / contentRect().width();
qreal ny = (point.y() - contentRect().y()) / contentRect().height();
switch (orientation()) {
case 0:
default:
return QPointF(nx, ny);
case 90:
return QPointF(1.0 - ny, nx);
case 180:
return QPointF(1.0 - nx, 1.0 - ny);
case 270:
return QPointF(ny, 1.0 - nx);
}
}
QRectF QuickFBORenderer::mapRectToSourceNormalized(const QRectF &rectangle) const
{
return QRectF(mapPointToSourceNormalized(rectangle.topLeft()),
mapPointToSourceNormalized(rectangle.bottomRight())).normalized();
}
bool QuickFBORenderer::isOpenGL() const
{
return d_func().opengl;
}
void QuickFBORenderer::setOpenGL(bool o)
{
DPTR_D(QuickFBORenderer);
if (d.opengl == o)
return;
d.opengl = o;
Q_EMIT openGLChanged();
if (o)
setPreferredPixelFormat(VideoFormat::Format_YUV420P);
else
setPreferredPixelFormat(VideoFormat::Format_RGB32);
}
void QuickFBORenderer::fboSizeChanged(const QSize &size)
{
DPTR_D(QuickFBORenderer);
d.update_background = true;
resizeRenderer(size);
if (d.glctx != QOpenGLContext::currentContext()) {
d.glctx = QOpenGLContext::currentContext();
d.glv.setOpenGLContext(d.glctx); // will set viewport. but maybe wrong value for hi dpi
}
// ensure viewport is correct set
d.glv.setProjectionMatrixToRect(QRectF(0, 0, size.width(), size.height()));
d.setupAspectRatio();
}
void QuickFBORenderer::renderToFbo(QOpenGLFramebufferObject *fbo)
{
d_func().fbo = fbo;
handlePaintEvent();
}
QQmlListProperty<QuickVideoFilter> QuickFBORenderer::filters()
{
return QQmlListProperty<QuickVideoFilter>(this, NULL, vf_append, vf_count, vf_at, vf_clear);
}
void QuickFBORenderer::vf_append(QQmlListProperty<QuickVideoFilter> *property, QuickVideoFilter *value)
{
QuickFBORenderer* self = static_cast<QuickFBORenderer*>(property->object);
self->d_func().filters.append(value);
self->installFilter(value);
}
int QuickFBORenderer::vf_count(QQmlListProperty<QuickVideoFilter> *property)
{
QuickFBORenderer* self = static_cast<QuickFBORenderer*>(property->object);
return self->d_func().filters.size();
}
QuickVideoFilter* QuickFBORenderer::vf_at(QQmlListProperty<QuickVideoFilter> *property, int index)
{
QuickFBORenderer* self = static_cast<QuickFBORenderer*>(property->object);
return self->d_func().filters.at(index);
}
void QuickFBORenderer::vf_clear(QQmlListProperty<QuickVideoFilter> *property)
{
QuickFBORenderer* self = static_cast<QuickFBORenderer*>(property->object);
foreach (QuickVideoFilter *f, self->d_func().filters) {
self->uninstallFilter(f);
}
self->d_func().filters.clear();
}
void QuickFBORenderer::drawBackground()
{
if (backgroundRegion().isEmpty())
return;
DPTR_D(QuickFBORenderer);
d.fbo->bind();
DYGL(glViewport(0, 0, d.fbo->width(), d.fbo->height()));
d.glv.fill(backgroundColor());
}
void QuickFBORenderer::drawFrame()
{
DPTR_D(QuickFBORenderer);
d.fbo->bind();
DYGL(glViewport(0, 0, d.fbo->width(), d.fbo->height()));
if (!d.video_frame.isValid()) {
d.glv.fill(QColor(0, 0, 0, 0));
return;
}
if (d.frame_changed) {
d.glv.setCurrentFrame(d.video_frame);
d.frame_changed = false;
}
d.glv.render(QRectF(), realROI(), d.matrix);
}
bool QuickFBORenderer::event(QEvent *e)
{
if (e->type() != QEvent::User)
return QQuickFramebufferObject::event(e);
update();
return true;
}
bool QuickFBORenderer::onSetOrientation(int value)
{
Q_UNUSED(value);
d_func().setupAspectRatio();
return true;
}
void QuickFBORenderer::onSetOutAspectRatio(qreal ratio)
{
Q_UNUSED(ratio);
DPTR_D(QuickFBORenderer);
d.setupAspectRatio();
}
void QuickFBORenderer::onSetOutAspectRatioMode(OutAspectRatioMode mode)
{
Q_UNUSED(mode);
DPTR_D(QuickFBORenderer);
d.setupAspectRatio();
}
bool QuickFBORenderer::onSetBrightness(qreal b)
{
d_func().glv.setBrightness(b);
return true;
}
bool QuickFBORenderer::onSetContrast(qreal c)
{
d_func().glv.setContrast(c);
return true;
}
bool QuickFBORenderer::onSetHue(qreal h)
{
d_func().glv.setHue(h);
return true;
}
bool QuickFBORenderer::onSetSaturation(qreal s)
{
d_func().glv.setSaturation(s);
return true;
}
void QuickFBORenderer::updateRenderRect()
{
DPTR_D(QuickFBORenderer);
if (d.fill_mode == Stretch) {
setOutAspectRatioMode(RendererAspectRatio);
} else {//compute out_rect fits video aspect ratio then compute again if crop
setOutAspectRatioMode(VideoAspectRatio);
}
//update();
d.setupAspectRatio();
}
} //namespace QtAV