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7b4e1fd602
Adding Direct3D11 backend Qt6 QML videosink element, qml6d3d11sink. Implementation details are similar to the qt6 plugin in -good but there are a few notable differences. * qml6d3d11sink accepts all GstD3D11 supported video formats (e.g., NV12). * Scene graph (owned by qml6d3d11sink) will hold dedicated and sharable RGBA texture which belongs to Qt6's Direct3D11 device, instead of sharing GStreamer's own texture with Qt6. * All rendering operations will be done by using GStreamer's Direct3D11 device. Specifically, upstream texture will be copied (in case of RGBA) or converted to the above mentioned Qt6's sharable texture. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3707>
120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
/* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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* Copyright (C) 2023 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/d3d11/gstd3d11.h>
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#include <QQuickItem>
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#include <QQuickWindow>
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#include <mutex>
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#include "gstqsg6d3d11node.h"
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class GstQt6D3D11VideoItem;
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class GstQt6D3D11VideoItemProxy : public QObject
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{
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Q_OBJECT
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QML_ELEMENT
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public:
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GstQt6D3D11VideoItemProxy (GstQt6D3D11VideoItem * videoItem)
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: item (videoItem)
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{
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}
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void InvalidateRef (void);
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void SetSink (GstElement * sink);
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void SetCaps (GstCaps * caps);
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void SetBuffer (GstBuffer * buffer);
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void SetForceAspectRatio (bool force);
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gint64 AdapterLuid (void);
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GstQt6D3D11VideoItem * Item (void);
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private:
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GstQt6D3D11VideoItem *item;
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std::mutex lock;
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};
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class GstQt6D3D11VideoItem : public QQuickItem
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{
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friend class GstQt6D3D11VideoItemProxy;
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Q_OBJECT
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QML_ELEMENT
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public:
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GstQt6D3D11VideoItem ();
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~GstQt6D3D11VideoItem ();
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QSharedPointer<GstQt6D3D11VideoItemProxy> Proxy (void);
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protected:
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QSGNode * updatePaintNode (QSGNode * oldNode, UpdatePaintNodeData * data);
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void hoverEnterEvent (QHoverEvent * event);
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void hoverLeaveEvent (QHoverEvent * event);
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void hoverMoveEvent (QHoverEvent * event);
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void touchEvent (QTouchEvent * event);
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void mousePressEvent (QMouseEvent * event);
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void mouseReleaseEvent (QMouseEvent * event);
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void wheelEvent (QWheelEvent * event);
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private:
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void setSink (GstElement * sink);
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void setCaps (GstCaps * caps);
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void setBuffer (GstBuffer * buffer);
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void setForceAspectRatio (bool force);
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gint64 AdapterLuid ();
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void fitStreamToAllocatedSize (GstVideoRectangle * result);
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QPointF mapPointToStreamSize (QPointF point);
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void sendMouseEvent (QMouseEvent * event, gboolean is_press);
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void clearResource ();
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void clearFrameResource ();
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bool setupShader ();
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private slots:
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void handleWindowChanged (QQuickWindow * window);
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void onBeforeSynchronizing (void);
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void onSceneGraphInvalidated (void);
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void onBeforeRendering (void);
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private:
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QSharedPointer<GstQt6D3D11VideoItemProxy> proxy_;
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QQuickWindow *window_ = nullptr;
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GstCaps *caps_ = nullptr;
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GstBuffer *buffer_ = nullptr;
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bool force_aspect_ratio_ = true;
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gint64 luid_ = 0;
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GstVideoInfo info_;
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int display_width_ = 0;
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int display_height_ = 0;
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GWeakRef sink_;
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std::mutex lock_;
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bool mouse_hovering_ = false;
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bool update_par_ = false;
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GstD3D11Device *qt_device_ = nullptr;
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GstQSG6D3D11Node *node_ = nullptr;
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};
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void gst_qt6_d3d11_video_item_init_once (void);
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