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98e6c6d17b
Introduced package Media wrapping FFmpeg structures. Media_PlayerContext class manages video decoding into Media_IFrameQueue interface. Graphic3d_MediaTextureSet implements Media_IFrameQueue interface and can be used as texture source. AIS_MediaPlayer implements simple AIS object displaying video.
108 lines
2.8 KiB
C++
108 lines
2.8 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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// activate some C99 macros like UINT64_C in "stdint.h" which used by FFmpeg
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#ifndef __STDC_CONSTANT_MACROS
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#define __STDC_CONSTANT_MACROS
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#endif
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#include <Media_BufferPool.hxx>
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#include <Media_Frame.hxx>
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#ifdef HAVE_FFMPEG
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#include <Standard_WarningsDisable.hxx>
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extern "C"
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{
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#include <libavcodec/avcodec.h>
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#include <libavutil/imgutils.h>
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};
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#include <Standard_WarningsRestore.hxx>
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#endif
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IMPLEMENT_STANDARD_RTTIEXT(Media_BufferPool, Standard_Transient)
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// =======================================================================
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// function : Media_BufferPool
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// purpose :
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// =======================================================================
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Media_BufferPool::Media_BufferPool()
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: myPool (NULL),
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myBufferSize (0)
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{
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//
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}
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// =======================================================================
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// function : ~Media_BufferPool
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// purpose :
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// =======================================================================
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Media_BufferPool::~Media_BufferPool()
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{
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Release();
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}
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// =======================================================================
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// function : Release
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// purpose :
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// =======================================================================
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void Media_BufferPool::Release()
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{
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if (myPool != NULL)
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{
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#ifdef HAVE_FFMPEG
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av_buffer_pool_uninit (&myPool);
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#endif
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myPool = NULL;
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myBufferSize = 0;
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}
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}
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// =======================================================================
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// function : Init
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// purpose :
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// =======================================================================
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bool Media_BufferPool::Init (int theBufferSize)
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{
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if (myBufferSize == theBufferSize)
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{
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return true;
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}
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Release();
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if (theBufferSize == 0)
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{
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return true;
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}
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#ifdef HAVE_FFMPEG
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myPool = av_buffer_pool_init (theBufferSize, NULL);
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#endif
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myBufferSize = theBufferSize;
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return myPool != NULL;
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}
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// =======================================================================
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// function : GetBuffer
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// purpose :
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// =======================================================================
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AVBufferRef* Media_BufferPool::GetBuffer()
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{
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#ifdef HAVE_FFMPEG
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return av_buffer_pool_get (myPool);
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#else
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return NULL;
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#endif
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}
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