gstreamer/subprojects/gst-plugins-good/ext/qt/qtitem.cc
Matthew Waters 8a7614e814 qml: handle multiple items with different input formats
Issue was that Qt was caching multiple different shadersbased on a static
variable location.  This static variable location was the same no matter
the input video format and so if an item had an input video format of
RGB and another of RGBA, they would eventually end up using the same
GL shader leading to incorrect colours.

Fix by providing different static variable locations for each of the
different shaders that will be produced.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5145>
2023-08-04 13:22:59 +00:00

912 lines
24 KiB
C++

/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <gst/video/video.h>
#include "qtitem.h"
#include "gstqsgmaterial.h"
#include "gstqtglutility.h"
#include <QtCore/QMutexLocker>
#include <QtCore/QPointer>
#include <QtGui/QGuiApplication>
#include <QtQuick/QQuickWindow>
#include <QtQuick/QSGSimpleTextureNode>
/**
* SECTION:QtGLVideoItem
* @short_description: a Qt5 QtQuick item that renders GStreamer video #GstBuffers
*
* #QtGLVideoItem is an #QQuickItem that renders GStreamer video buffers.
*/
#define GST_CAT_DEFAULT qt_item_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define DEFAULT_FORCE_ASPECT_RATIO TRUE
#define DEFAULT_PAR_N 0
#define DEFAULT_PAR_D 1
enum
{
PROP_0,
PROP_FORCE_ASPECT_RATIO,
PROP_PIXEL_ASPECT_RATIO,
};
struct _QtGLVideoItemPrivate
{
GMutex lock;
/* properties */
gboolean force_aspect_ratio;
gint par_n, par_d;
GWeakRef sink;
gint display_width;
gint display_height;
GstBuffer *buffer;
GstCaps *new_caps;
GstCaps *caps;
GstVideoInfo new_v_info;
GstVideoInfo v_info;
gboolean initted;
GstGLDisplay *display;
QOpenGLContext *qt_context;
GstGLContext *other_context;
GstGLContext *context;
/* buffers with textures that were bound by QML */
GQueue bound_buffers;
/* buffers that were previously bound but in the meantime a new one was
* bound so this one is most likely not used anymore
* FIXME: Ideally we would use fences for this but there seems to be no
* way to reliably "try wait" on a fence */
GQueue potentially_unbound_buffers;
};
QtGLVideoItem::QtGLVideoItem()
{
static gsize _debug;
if (g_once_init_enter (&_debug)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "qtglwidget", 0, "Qt GL Widget");
g_once_init_leave (&_debug, 1);
}
this->setFlag (QQuickItem::ItemHasContents, true);
this->priv = g_new0 (QtGLVideoItemPrivate, 1);
this->priv->force_aspect_ratio = DEFAULT_FORCE_ASPECT_RATIO;
this->priv->par_n = DEFAULT_PAR_N;
this->priv->par_d = DEFAULT_PAR_D;
this->priv->initted = FALSE;
g_mutex_init (&this->priv->lock);
g_weak_ref_init (&priv->sink, NULL);
this->priv->display = gst_qt_get_gl_display(TRUE);
connect(this, SIGNAL(windowChanged(QQuickWindow*)), this,
SLOT(handleWindowChanged(QQuickWindow*)));
this->proxy = QSharedPointer<QtGLVideoItemInterface>(new QtGLVideoItemInterface(this));
setFlag(ItemHasContents, true);
setAcceptedMouseButtons(Qt::AllButtons);
setAcceptHoverEvents(true);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 10, 0))
setAcceptTouchEvents(true);
#else
GST_INFO ("Qt version is below 5.10, touchscreen events will not work");
#endif
GST_DEBUG ("%p init Qt Video Item", this);
}
QtGLVideoItem::~QtGLVideoItem()
{
GstBuffer *tmp_buffer;
/* Before destroying the priv info, make sure
* no qmlglsink's will call in again, and that
* any ongoing calls are done by invalidating the proxy
* pointer */
GST_INFO ("%p Destroying QtGLVideoItem and invalidating the proxy %p", this, proxy.data());
proxy->invalidateRef();
proxy.clear();
g_mutex_clear (&this->priv->lock);
if (this->priv->context)
gst_object_unref(this->priv->context);
if (this->priv->other_context)
gst_object_unref(this->priv->other_context);
if (this->priv->display)
gst_object_unref(this->priv->display);
while ((tmp_buffer = (GstBuffer*) g_queue_pop_head (&this->priv->potentially_unbound_buffers))) {
GST_TRACE ("old buffer %p should be unbound now, unreffing", tmp_buffer);
gst_buffer_unref (tmp_buffer);
}
while ((tmp_buffer = (GstBuffer*) g_queue_pop_head (&this->priv->bound_buffers))) {
GST_TRACE ("old buffer %p should be unbound now, unreffing", tmp_buffer);
gst_buffer_unref (tmp_buffer);
}
gst_buffer_replace (&this->priv->buffer, NULL);
gst_caps_replace (&this->priv->caps, NULL);
gst_caps_replace (&this->priv->new_caps, NULL);
g_weak_ref_clear (&this->priv->sink);
g_free (this->priv);
this->priv = NULL;
}
void
QtGLVideoItem::setDAR(gint num, gint den)
{
this->priv->par_n = num;
this->priv->par_d = den;
}
void
QtGLVideoItem::getDAR(gint * num, gint * den)
{
if (num)
*num = this->priv->par_n;
if (den)
*den = this->priv->par_d;
}
void
QtGLVideoItem::setForceAspectRatio(bool force_aspect_ratio)
{
this->priv->force_aspect_ratio = !!force_aspect_ratio;
emit forceAspectRatioChanged(force_aspect_ratio);
}
bool
QtGLVideoItem::getForceAspectRatio()
{
return this->priv->force_aspect_ratio;
}
bool
QtGLVideoItem::itemInitialized()
{
return this->priv->initted;
}
static gboolean
_calculate_par (QtGLVideoItem * widget, GstVideoInfo * info)
{
gboolean ok;
gint width, height;
gint par_n, par_d;
gint display_par_n, display_par_d;
guint display_ratio_num, display_ratio_den;
width = GST_VIDEO_INFO_WIDTH (info);
height = GST_VIDEO_INFO_HEIGHT (info);
par_n = GST_VIDEO_INFO_PAR_N (info);
par_d = GST_VIDEO_INFO_PAR_D (info);
if (!par_n)
par_n = 1;
/* get display's PAR */
if (widget->priv->par_n != 0 && widget->priv->par_d != 0) {
display_par_n = widget->priv->par_n;
display_par_d = widget->priv->par_d;
} else {
display_par_n = 1;
display_par_d = 1;
}
ok = gst_video_calculate_display_ratio (&display_ratio_num,
&display_ratio_den, width, height, par_n, par_d, display_par_n,
display_par_d);
if (!ok)
return FALSE;
widget->setImplicitWidth (width);
widget->setImplicitHeight (height);
GST_LOG ("%p PAR: %u/%u DAR:%u/%u", widget, par_n, par_d, display_par_n,
display_par_d);
if (height % display_ratio_den == 0) {
GST_DEBUG ("%p keeping video height", widget);
widget->priv->display_width = (guint)
gst_util_uint64_scale_int (height, display_ratio_num,
display_ratio_den);
widget->priv->display_height = height;
} else if (width % display_ratio_num == 0) {
GST_DEBUG ("%p keeping video width", widget);
widget->priv->display_width = width;
widget->priv->display_height = (guint)
gst_util_uint64_scale_int (width, display_ratio_den, display_ratio_num);
} else {
GST_DEBUG ("%p approximating while keeping video height", widget);
widget->priv->display_width = (guint)
gst_util_uint64_scale_int (height, display_ratio_num,
display_ratio_den);
widget->priv->display_height = height;
}
GST_DEBUG ("%p scaling to %dx%d", widget, widget->priv->display_width,
widget->priv->display_height);
return TRUE;
}
QSGNode *
QtGLVideoItem::updatePaintNode(QSGNode * oldNode,
UpdatePaintNodeData * updatePaintNodeData)
{
GstBuffer *old_buffer;
gboolean was_bound = FALSE;
if (!this->priv->initted)
return oldNode;
QSGGeometryNode *texNode = static_cast<QSGGeometryNode *> (oldNode);
GstVideoRectangle src, dst, result;
GstQSGMaterial *tex = nullptr;
QSGGeometry *geometry = nullptr;
g_mutex_lock (&this->priv->lock);
GST_TRACE ("%p updatePaintNode", this);
if (!this->priv->caps) {
GST_LOG ("%p no caps yet", this);
g_mutex_unlock (&this->priv->lock);
return NULL;
}
if (gst_gl_context_get_current() == NULL)
gst_gl_context_activate (this->priv->other_context, TRUE);
if (texNode) {
geometry = texNode->geometry();
tex = static_cast<GstQSGMaterial *>(texNode->material());
if (tex && !tex->compatibleWith(&this->priv->v_info)) {
delete texNode;
texNode = nullptr;
}
}
if (!texNode) {
texNode = new QSGGeometryNode();
geometry = new QSGGeometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4);
texNode->setGeometry(geometry);
tex = GstQSGMaterial::new_for_format(GST_VIDEO_INFO_FORMAT (&this->priv->v_info));
texNode->setMaterial(tex);
}
if ((old_buffer = tex->getBuffer(&was_bound))) {
if (old_buffer == this->priv->buffer) {
/* same buffer */
gst_buffer_unref (old_buffer);
} else if (!was_bound) {
GST_TRACE ("old buffer %p was not bound yet, unreffing", old_buffer);
gst_buffer_unref (old_buffer);
} else {
GstBuffer *tmp_buffer;
GST_TRACE ("old buffer %p was bound, queueing up for later", old_buffer);
/* Unref all buffers that were previously not bound anymore. At least
* one more buffer was bound in the meantime so this one is most likely
* not in use anymore. */
while ((tmp_buffer = (GstBuffer*) g_queue_pop_head (&this->priv->potentially_unbound_buffers))) {
GST_TRACE ("old buffer %p should be unbound now, unreffing", tmp_buffer);
gst_buffer_unref (tmp_buffer);
}
/* Move previous bound buffers to the next queue. We now know that
* another buffer was bound in the meantime and will free them on
* the next iteration above. */
while ((tmp_buffer = (GstBuffer*) g_queue_pop_head (&this->priv->bound_buffers))) {
GST_TRACE ("old buffer %p is potentially unbound now", tmp_buffer);
g_queue_push_tail (&this->priv->potentially_unbound_buffers, tmp_buffer);
}
g_queue_push_tail (&this->priv->bound_buffers, old_buffer);
}
old_buffer = NULL;
}
tex->setCaps (this->priv->caps);
tex->setBuffer (this->priv->buffer);
texNode->markDirty(QSGNode::DirtyMaterial);
if (this->priv->force_aspect_ratio) {
src.w = this->priv->display_width;
src.h = this->priv->display_height;
dst.x = boundingRect().x();
dst.y = boundingRect().y();
dst.w = boundingRect().width();
dst.h = boundingRect().height();
gst_video_sink_center_rect (src, dst, &result, TRUE);
} else {
result.x = boundingRect().x();
result.y = boundingRect().y();
result.w = boundingRect().width();
result.h = boundingRect().height();
}
QRectF rect(result.x, result.y, result.w, result.h);
QRectF sourceRect(0, 0, 1, 1);
QSGGeometry::updateTexturedRectGeometry(geometry, rect, sourceRect);
g_mutex_unlock (&this->priv->lock);
return texNode;
}
/* This method has to be invoked with the the priv->lock taken */
void
QtGLVideoItem::fitStreamToAllocatedSize(GstVideoRectangle * result)
{
if (this->priv->force_aspect_ratio) {
GstVideoRectangle src, dst;
src.x = 0;
src.y = 0;
src.w = this->priv->display_width;
src.h = this->priv->display_height;
dst.x = 0;
dst.y = 0;
dst.w = width();
dst.h = height();
gst_video_sink_center_rect (src, dst, result, TRUE);
} else {
result->x = 0;
result->y = 0;
result->w = width();
result->h = height();
}
}
/* This method has to be invoked with the the priv->lock taken */
QPointF
QtGLVideoItem::mapPointToStreamSize(QPointF pos)
{
gdouble stream_width, stream_height;
GstVideoRectangle result;
double stream_x, stream_y;
double x, y;
fitStreamToAllocatedSize(&result);
stream_width = (gdouble) GST_VIDEO_INFO_WIDTH (&this->priv->v_info);
stream_height = (gdouble) GST_VIDEO_INFO_HEIGHT (&this->priv->v_info);
x = pos.x();
y = pos.y();
/* from display coordinates to stream coordinates */
if (result.w > 0)
stream_x = (x - result.x) / result.w * stream_width;
else
stream_x = 0.;
/* clip to stream size */
stream_x = CLAMP(stream_x, 0., stream_width);
/* same for y-axis */
if (result.h > 0)
stream_y = (y - result.y) / result.h * stream_height;
else
stream_y = 0.;
stream_y = CLAMP(stream_y, 0., stream_height);
GST_TRACE ("transform %fx%f into %fx%f", x, y, stream_x, stream_y);
return QPointF(stream_x, stream_y);
}
static GstNavigationModifierType
translateModifiers(Qt::KeyboardModifiers modifiers)
{
return (GstNavigationModifierType)(
((modifiers & Qt::KeyboardModifier::ShiftModifier) ? GST_NAVIGATION_MODIFIER_SHIFT_MASK : 0) |
((modifiers & Qt::KeyboardModifier::ControlModifier) ? GST_NAVIGATION_MODIFIER_CONTROL_MASK : 0) |
((modifiers & Qt::KeyboardModifier::AltModifier) ? GST_NAVIGATION_MODIFIER_MOD1_MASK : 0) |
((modifiers & Qt::KeyboardModifier::MetaModifier) ? GST_NAVIGATION_MODIFIER_META_MASK : 0));
}
static GstNavigationModifierType
translateMouseButtons(Qt::MouseButtons buttons)
{
return (GstNavigationModifierType)(
((buttons & Qt::LeftButton) ? GST_NAVIGATION_MODIFIER_BUTTON1_MASK : 0) |
((buttons & Qt::RightButton) ? GST_NAVIGATION_MODIFIER_BUTTON2_MASK : 0) |
((buttons & Qt::MiddleButton) ? GST_NAVIGATION_MODIFIER_BUTTON3_MASK : 0) |
((buttons & Qt::BackButton) ? GST_NAVIGATION_MODIFIER_BUTTON4_MASK : 0) |
((buttons & Qt::ForwardButton) ? GST_NAVIGATION_MODIFIER_BUTTON5_MASK : 0));
}
void
QtGLVideoItem::wheelEvent(QWheelEvent * event)
{
g_mutex_lock (&this->priv->lock);
QPoint delta = event->angleDelta();
GstElement *element = GST_ELEMENT_CAST (g_weak_ref_get (&this->priv->sink));
if (element != NULL) {
#if (QT_VERSION >= QT_VERSION_CHECK (5, 14, 0))
auto position = event->position();
#else
auto position = *event;
#endif
gst_navigation_send_event_simple (GST_NAVIGATION (element),
gst_navigation_event_new_mouse_scroll (position.x(), position.y(),
delta.x(), delta.y(),
(GstNavigationModifierType) (
translateModifiers(event->modifiers()) | translateMouseButtons(event->buttons()))));
g_object_unref (element);
}
g_mutex_unlock (&this->priv->lock);
}
void
QtGLVideoItem::hoverEnterEvent(QHoverEvent *)
{
mouseHovering = true;
}
void
QtGLVideoItem::hoverLeaveEvent(QHoverEvent *)
{
mouseHovering = false;
}
void
QtGLVideoItem::hoverMoveEvent(QHoverEvent * event)
{
if (!mouseHovering)
return;
g_mutex_lock (&this->priv->lock);
/* can't do anything when we don't have input format */
if (!this->priv->caps) {
g_mutex_unlock (&this->priv->lock);
return;
}
if (event->pos() != event->oldPos()) {
QPointF pos = mapPointToStreamSize(event->pos());
GstElement *element = GST_ELEMENT_CAST (g_weak_ref_get (&this->priv->sink));
if (element != NULL) {
gst_navigation_send_event_simple (GST_NAVIGATION (element),
gst_navigation_event_new_mouse_move (pos.x(), pos.y(),
translateModifiers(event->modifiers())));
g_object_unref (element);
}
}
g_mutex_unlock (&this->priv->lock);
}
void
QtGLVideoItem::touchEvent(QTouchEvent * event)
{
g_mutex_lock (&this->priv->lock);
/* can't do anything when we don't have input format */
if (!this->priv->caps) {
g_mutex_unlock (&this->priv->lock);
return;
}
GstElement *element = GST_ELEMENT_CAST (g_weak_ref_get (&this->priv->sink));
if (element == NULL)
return;
if (event->type() == QEvent::TouchCancel) {
gst_navigation_send_event_simple (GST_NAVIGATION (element),
gst_navigation_event_new_touch_cancel (translateModifiers(event->modifiers())));
} else {
const QList<QTouchEvent::TouchPoint> points = event->touchPoints();
gboolean sent_event = FALSE;
for (int i = 0; i < points.count(); i++) {
GstEvent *nav_event;
QPointF pos = mapPointToStreamSize(points[i].pos());
switch (points[i].state()) {
case Qt::TouchPointPressed:
nav_event = gst_navigation_event_new_touch_down ((guint) points[i].id(),
pos.x(), pos.y(), (gdouble) points[i].pressure(), translateModifiers(event->modifiers()));
break;
case Qt::TouchPointMoved:
nav_event = gst_navigation_event_new_touch_motion ((guint) points[i].id(),
pos.x(), pos.y(), (gdouble) points[i].pressure(), translateModifiers(event->modifiers()));
break;
case Qt::TouchPointReleased:
nav_event = gst_navigation_event_new_touch_up ((guint) points[i].id(),
pos.x(), pos.y(), translateModifiers(event->modifiers()));
break;
/* Don't send an event if the point did not change */
default:
nav_event = NULL;
break;
}
if (nav_event) {
gst_navigation_send_event_simple (GST_NAVIGATION (element), nav_event);
sent_event = TRUE;
}
}
/* Group simultaneos touch events with a frame event */
if (sent_event) {
gst_navigation_send_event_simple (GST_NAVIGATION (element),
gst_navigation_event_new_touch_frame (translateModifiers(event->modifiers())));
}
}
g_object_unref (element);
g_mutex_unlock (&this->priv->lock);
}
void
QtGLVideoItem::sendMouseEvent(QMouseEvent * event, gboolean is_press)
{
quint32 button = 0;
switch (event->button()) {
case Qt::LeftButton:
button = 1;
break;
case Qt::RightButton:
button = 2;
break;
default:
break;
}
mousePressedButton = button;
g_mutex_lock (&this->priv->lock);
/* can't do anything when we don't have input format */
if (!this->priv->caps) {
g_mutex_unlock (&this->priv->lock);
return;
}
QPointF pos = mapPointToStreamSize(event->pos());
GstElement *element = GST_ELEMENT_CAST (g_weak_ref_get (&this->priv->sink));
if (element != NULL) {
gst_navigation_send_event_simple (GST_NAVIGATION (element),
(is_press) ? gst_navigation_event_new_mouse_button_press (button,
pos.x(), pos.y(),
(GstNavigationModifierType) (
translateModifiers(event->modifiers()) | translateMouseButtons(event->buttons()))) :
gst_navigation_event_new_mouse_button_release (button, pos.x(),
pos.y(),
(GstNavigationModifierType) (
translateModifiers(event->modifiers()) | translateMouseButtons(event->buttons()))));
g_object_unref (element);
}
g_mutex_unlock (&this->priv->lock);
}
void
QtGLVideoItem::mousePressEvent(QMouseEvent * event)
{
forceActiveFocus();
sendMouseEvent(event, TRUE);
}
void
QtGLVideoItem::mouseReleaseEvent(QMouseEvent * event)
{
sendMouseEvent(event, FALSE);
}
void
QtGLVideoItemInterface::setSink (GstElement * sink)
{
QMutexLocker locker(&lock);
if (qt_item == NULL)
return;
g_mutex_lock (&qt_item->priv->lock);
g_weak_ref_set (&qt_item->priv->sink, sink);
g_mutex_unlock (&qt_item->priv->lock);
}
void
QtGLVideoItemInterface::setBuffer (GstBuffer * buffer)
{
QMutexLocker locker(&lock);
if (qt_item == NULL) {
GST_WARNING ("%p actual item is NULL. setBuffer call ignored", this);
return;
}
if (!qt_item->priv->caps && !qt_item->priv->new_caps) {
GST_WARNING ("%p Got buffer on unnegotiated QtGLVideoItem. Dropping", this);
return;
}
g_mutex_lock (&qt_item->priv->lock);
if (qt_item->priv->new_caps) {
GST_DEBUG ("%p caps change from %" GST_PTR_FORMAT " to %" GST_PTR_FORMAT,
this, qt_item->priv->caps, qt_item->priv->new_caps);
gst_caps_take (&qt_item->priv->caps, qt_item->priv->new_caps);
qt_item->priv->new_caps = NULL;
qt_item->priv->v_info = qt_item->priv->new_v_info;
if (!_calculate_par (qt_item, &qt_item->priv->v_info)) {
g_mutex_unlock (&qt_item->priv->lock);
return;
}
}
gst_buffer_replace (&qt_item->priv->buffer, buffer);
QMetaObject::invokeMethod(qt_item, "update", Qt::QueuedConnection);
g_mutex_unlock (&qt_item->priv->lock);
}
void
QtGLVideoItem::onSceneGraphInitialized ()
{
if (this->window() == NULL)
return;
GST_DEBUG ("%p scene graph initialization with Qt GL context %p", this,
this->window()->openglContext ());
if (this->priv->qt_context == this->window()->openglContext ())
return;
this->priv->qt_context = this->window()->openglContext ();
if (this->priv->qt_context == NULL) {
g_assert_not_reached ();
return;
}
this->priv->initted = gst_qt_get_gl_wrapcontext (this->priv->display,
&this->priv->other_context, &this->priv->context);
GST_DEBUG ("%p created wrapped GL context %" GST_PTR_FORMAT, this,
this->priv->other_context);
emit itemInitializedChanged();
}
void
QtGLVideoItem::onSceneGraphInvalidated ()
{
GST_FIXME ("%p scene graph invalidated", this);
}
/**
* Retrieve and populate the GL context information from the current
* OpenGL context.
*/
gboolean
QtGLVideoItemInterface::initWinSys ()
{
QMutexLocker locker(&lock);
GError *error = NULL;
if (qt_item == NULL)
return FALSE;
g_mutex_lock (&qt_item->priv->lock);
if (qt_item->priv->display && qt_item->priv->qt_context
&& qt_item->priv->other_context && qt_item->priv->context) {
/* already have the necessary state */
g_mutex_unlock (&qt_item->priv->lock);
return TRUE;
}
if (!GST_IS_GL_DISPLAY (qt_item->priv->display)) {
GST_ERROR ("%p failed to retrieve display connection %" GST_PTR_FORMAT,
qt_item, qt_item->priv->display);
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
if (!GST_IS_GL_CONTEXT (qt_item->priv->other_context)) {
GST_ERROR ("%p failed to retrieve wrapped context %" GST_PTR_FORMAT, qt_item,
qt_item->priv->other_context);
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
qt_item->priv->context = gst_gl_context_new (qt_item->priv->display);
if (!qt_item->priv->context) {
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
if (!gst_gl_context_create (qt_item->priv->context, qt_item->priv->other_context,
&error)) {
GST_ERROR ("%s", error->message);
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
g_mutex_unlock (&qt_item->priv->lock);
return TRUE;
}
void
QtGLVideoItem::handleWindowChanged (QQuickWindow * win)
{
if (win) {
if (win->isSceneGraphInitialized ())
win->scheduleRenderJob (new RenderJob (std::
bind (&QtGLVideoItem::onSceneGraphInitialized, this)),
QQuickWindow::BeforeSynchronizingStage);
else
connect (win, SIGNAL (sceneGraphInitialized ()), this,
SLOT (onSceneGraphInitialized ()), Qt::DirectConnection);
connect (win, SIGNAL (sceneGraphInvalidated ()), this,
SLOT (onSceneGraphInvalidated ()), Qt::DirectConnection);
} else {
this->priv->qt_context = NULL;
this->priv->initted = FALSE;
}
}
gboolean
QtGLVideoItemInterface::setCaps (GstCaps * caps)
{
QMutexLocker locker(&lock);
GstVideoInfo v_info;
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
if (qt_item == NULL)
return FALSE;
if (qt_item->priv->caps && gst_caps_is_equal_fixed (qt_item->priv->caps, caps))
return TRUE;
if (!gst_video_info_from_caps (&v_info, caps))
return FALSE;
g_mutex_lock (&qt_item->priv->lock);
GST_DEBUG ("%p set caps %" GST_PTR_FORMAT, qt_item, caps);
gst_caps_replace (&qt_item->priv->new_caps, caps);
qt_item->priv->new_v_info = v_info;
g_mutex_unlock (&qt_item->priv->lock);
return TRUE;
}
GstGLContext *
QtGLVideoItemInterface::getQtContext ()
{
QMutexLocker locker(&lock);
if (!qt_item || !qt_item->priv->other_context)
return NULL;
return (GstGLContext *) gst_object_ref (qt_item->priv->other_context);
}
GstGLContext *
QtGLVideoItemInterface::getContext ()
{
QMutexLocker locker(&lock);
if (!qt_item || !qt_item->priv->context)
return NULL;
return (GstGLContext *) gst_object_ref (qt_item->priv->context);
}
GstGLDisplay *
QtGLVideoItemInterface::getDisplay()
{
QMutexLocker locker(&lock);
if (!qt_item || !qt_item->priv->display)
return NULL;
return (GstGLDisplay *) gst_object_ref (qt_item->priv->display);
}
void
QtGLVideoItemInterface::setDAR(gint num, gint den)
{
QMutexLocker locker(&lock);
if (!qt_item)
return;
qt_item->setDAR(num, den);
}
void
QtGLVideoItemInterface::getDAR(gint * num, gint * den)
{
QMutexLocker locker(&lock);
if (!qt_item)
return;
qt_item->getDAR (num, den);
}
void
QtGLVideoItemInterface::setForceAspectRatio(bool force_aspect_ratio)
{
QMutexLocker locker(&lock);
if (!qt_item)
return;
qt_item->setForceAspectRatio(force_aspect_ratio);
}
bool
QtGLVideoItemInterface::getForceAspectRatio()
{
QMutexLocker locker(&lock);
if (!qt_item)
return FALSE;
return qt_item->getForceAspectRatio();
}
void
QtGLVideoItemInterface::invalidateRef()
{
QMutexLocker locker(&lock);
qt_item = NULL;
}