112 lines
4.5 KiB
C++
112 lines
4.5 KiB
C++
// Created by: Kirill GAVRILOV
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// Copyright (c) 2019 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#ifndef _Graphic3d_MediaTextureSet_HeaderFile
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#define _Graphic3d_MediaTextureSet_HeaderFile
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#include "Media_IFrameQueue.hxx"
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#include "Graphic3d_MediaTexture.hxx"
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#include "Graphic3d_TextureSet.hxx"
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class Graphic3d_ShaderProgram;
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class Media_PlayerContext;
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//! Texture adapter for Media_Frame.
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class Graphic3d_MediaTextureSet : public Graphic3d_TextureSet, public Media_IFrameQueue
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{
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DEFINE_STANDARD_RTTIEXT(Graphic3d_MediaTextureSet, Graphic3d_TextureSet)
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public:
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//! Callback definition.
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typedef void (*CallbackOnUpdate_t)(void* theUserPtr);
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public:
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//! Empty constructor.
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Standard_EXPORT Graphic3d_MediaTextureSet();
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//! Setup callback to be called on queue progress (e.g. when new frame should be displayed).
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Standard_EXPORT void SetCallback(CallbackOnUpdate_t theCallbackFunction,
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void* theCallbackUserPtr);
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//! Call callback.
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Standard_EXPORT void Notify();
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//! Return input media.
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const TCollection_AsciiString& Input() const { return myInput; }
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//! Open specified file.
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//! Passing an empty path would close current input.
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Standard_EXPORT void OpenInput(const TCollection_AsciiString& thePath,
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Standard_Boolean theToWait);
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//! Return player context; it can be NULL until first OpenInput().
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const Handle(Media_PlayerContext)& PlayerContext() const { return myPlayerCtx; }
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//! Swap front/back frames.
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Standard_EXPORT Standard_Boolean SwapFrames();
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//! Return front frame dimensions.
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Graphic3d_Vec2i FrameSize() const { return myFrameSize; }
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//! Return shader program for displaying texture set.
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Handle(Graphic3d_ShaderProgram) ShaderProgram() const
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{
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if (myIsPlanarYUV)
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{
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return myIsFullRangeYUV ? myShaderYUVJ : myShaderYUV;
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}
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return Handle(Graphic3d_ShaderProgram)();
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}
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//! Return TRUE if texture set defined 3 YUV planes.
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Standard_Boolean IsPlanarYUV() const { return myIsPlanarYUV; }
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//! Return TRUE if YUV range is full.
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Standard_Boolean IsFullRangeYUV() const { return myIsFullRangeYUV; }
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//! Return duration in seconds.
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double Duration() const { return myDuration; }
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//! Return playback progress in seconds.
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double Progress() const { return myProgress; }
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//! @name Media_IFrameQueue interface
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private:
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//! Lock the frame for decoding into.
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Standard_EXPORT virtual Handle(Media_Frame) LockFrame() Standard_OVERRIDE;
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//! Release the frame to present decoding results.
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Standard_EXPORT virtual void ReleaseFrame(const Handle(Media_Frame)& theFrame) Standard_OVERRIDE;
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protected:
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Handle(Media_PlayerContext) myPlayerCtx; //!< player context
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Handle(Media_Frame) myFramePair[2]; //!< front/back frames pair
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Handle(Graphic3d_ShaderProgram) myShaderYUV; //!< shader program for YUV texture set
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Handle(Graphic3d_ShaderProgram) myShaderYUVJ; //!< shader program for YUVJ texture set
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Handle(Standard_HMutex) myMutex; //!< mutex for accessing frames
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TCollection_AsciiString myInput; //!< input media
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CallbackOnUpdate_t myCallbackFunction; //!< callback function
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void* myCallbackUserPtr; //!< callback data
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Graphic3d_Vec2i myFrameSize; //!< front frame size
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Standard_Real myProgress; //!< playback progress in seconds
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Standard_Real myDuration; //!< stream duration
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Standard_Integer myFront; //!< index of front texture
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Standard_Boolean myToPresentFrame; //!< flag
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// clang-format off
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Standard_Boolean myIsPlanarYUV; //!< front frame contains planar YUV data or native texture format
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Standard_Boolean myIsFullRangeYUV; //!< front frame defines full-range or reduced-range YUV
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// clang-format on
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};
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#endif // _Graphic3d_MediaTextureSet_HeaderFile
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