diff options
Diffstat (limited to 'ext/qt/qtitem.cc')
| -rw-r--r-- | ext/qt/qtitem.cc | 546 |
1 files changed, 0 insertions, 546 deletions
diff --git a/ext/qt/qtitem.cc b/ext/qt/qtitem.cc deleted file mode 100644 index 65b883eab..000000000 --- a/ext/qt/qtitem.cc +++ /dev/null @@ -1,546 +0,0 @@ -/* - * 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 "gstqsgtexture.h" -#include "gstqtglutility.h" - -#include <QtCore/QRunnable> -#include <QtCore/QMutexLocker> -#include <QtGui/QGuiApplication> -#include <QtQuick/QQuickWindow> -#include <QtQuick/QSGSimpleTextureNode> - -/** - * SECTION:gtkgstglwidget - * @short_description: a #GtkGLArea that renders GStreamer video #GstBuffers - * @see_also: #GtkGLArea, #GstBuffer - * - * #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; - - gint display_width; - gint display_height; - - gboolean negotiated; - GstBuffer *buffer; - GstCaps *caps; - GstVideoInfo v_info; - - gboolean initted; - GstGLDisplay *display; - QOpenGLContext *qt_context; - GstGLContext *other_context; - GstGLContext *context; -}; - -class InitializeSceneGraph : public QRunnable -{ -public: - InitializeSceneGraph(QtGLVideoItem *item); - void run(); - -private: - QtGLVideoItem *item_; -}; - -InitializeSceneGraph::InitializeSceneGraph(QtGLVideoItem *item) : - item_(item) -{ -} - -void InitializeSceneGraph::run() -{ - item_->onSceneGraphInitialized(); -} - -QtGLVideoItem::QtGLVideoItem() -{ - static volatile 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->m_openGlContextInitialized = false; - 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; - - g_mutex_init (&this->priv->lock); - - this->priv->display = gst_qt_get_gl_display(); - - connect(this, SIGNAL(windowChanged(QQuickWindow*)), this, - SLOT(handleWindowChanged(QQuickWindow*))); - - this->proxy = QSharedPointer<QtGLVideoItemInterface>(new QtGLVideoItemInterface(this)); - - GST_DEBUG ("%p init Qt Video Item", this); -} - -QtGLVideoItem::~QtGLVideoItem() -{ - /* 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 ("Destroying QtGLVideoItem and invalidating the proxy"); - 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); - 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; -} - -bool -QtGLVideoItem::getForceAspectRatio() -{ - return this->priv->force_aspect_ratio; -} - -bool -QtGLVideoItem::itemInitialized() -{ - return m_openGlContextInitialized; -} - -QSGNode * -QtGLVideoItem::updatePaintNode(QSGNode * oldNode, - UpdatePaintNodeData * updatePaintNodeData) -{ - if (!m_openGlContextInitialized) { - return oldNode; - } - - QSGSimpleTextureNode *texNode = static_cast<QSGSimpleTextureNode *> (oldNode); - GstVideoRectangle src, dst, result; - GstQSGTexture *tex; - - g_mutex_lock (&this->priv->lock); - gst_gl_context_activate (this->priv->other_context, TRUE); - - GST_TRACE ("%p updatePaintNode", this); - - if (!this->priv->caps) { - g_mutex_unlock (&this->priv->lock); - return NULL; - } - - if (!texNode) { - texNode = new QSGSimpleTextureNode (); - texNode->setOwnsTexture (true); - texNode->setTexture (new GstQSGTexture ()); - } - - tex = static_cast<GstQSGTexture *> (texNode->texture()); - 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(); - } - - texNode->setRect (QRectF (result.x, result.y, result.w, result.h)); - - gst_gl_context_activate (this->priv->other_context, FALSE); - g_mutex_unlock (&this->priv->lock); - - return texNode; -} - -static void -_reset (QtGLVideoItem * qt_item) -{ - gst_buffer_replace (&qt_item->priv->buffer, NULL); - - gst_caps_replace (&qt_item->priv->caps, NULL); - - qt_item->priv->negotiated = FALSE; - qt_item->priv->initted = FALSE; -} - -void -QtGLVideoItemInterface::setBuffer (GstBuffer * buffer) -{ - QMutexLocker locker(&lock); - - if (qt_item == NULL) - return; - - if (!qt_item->priv->negotiated) { - GST_WARNING ("Got buffer on unnegotiated QtGLVideoItem. Dropping"); - return; - } - - g_mutex_lock (&qt_item->priv->lock); - - 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 () -{ - GST_DEBUG ("scene graph initialization with Qt GL context %p", - 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; - } - - m_openGlContextInitialized = 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); -} - -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 InitializeSceneGraph(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; - } -} - -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; - - GST_LOG ("PAR: %u/%u DAR:%u/%u", par_n, par_d, display_par_n, display_par_d); - - if (height % display_ratio_den == 0) { - GST_DEBUG ("keeping video height"); - 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 ("keeping video width"); - 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 ("approximating while keeping video height"); - widget->priv->display_width = (guint) - gst_util_uint64_scale_int (height, display_ratio_num, - display_ratio_den); - widget->priv->display_height = height; - } - GST_DEBUG ("scaling to %dx%d", widget->priv->display_width, - widget->priv->display_height); - - return TRUE; -} - -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); - - _reset (qt_item); - - gst_caps_replace (&qt_item->priv->caps, caps); - - if (!_calculate_par (qt_item, &v_info)) { - g_mutex_unlock (&qt_item->priv->lock); - return FALSE; - } - - qt_item->priv->v_info = v_info; - qt_item->priv->negotiated = TRUE; - - 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; -} - |