Aegisub/aegisub/libmedia/cache/video_cache.h

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// Copyright (c) 2008, Rodrigo Braz Monteiro, Fredrik Mellbin
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file video_provider_cache.h
/// @see video_provider_cache.cpp
/// @ingroup video_input
///
#ifndef AGI_PRE
#include <list>
#include <memory>
#endif
#include "libmedia/video.h"
namespace media {
struct CachedFrame;
/// DOCME
/// @class VideoProviderCache
/// @brief DOCME
///
/// DOCME
class VideoProviderCache : public VideoProvider {
/// DOCME
std::auto_ptr<VideoProvider> master;
/// DOCME
unsigned int cacheMax;
/// DOCME
std::list<CachedFrame> cache;
void Cache(int n,const AegiVideoFrame frame);
AegiVideoFrame GetCachedFrame(int n);
// Cache functions
unsigned GetCurCacheSize();
public:
// Base methods
const AegiVideoFrame GetFrame(int n);
VideoProviderCache(VideoProvider *master);
virtual ~VideoProviderCache();
// Override the following methods:
virtual int GetPosition() const { return master->GetPosition(); }
virtual int GetFrameCount() const { return master->GetFrameCount(); }
virtual int GetWidth() const { return master->GetWidth(); }
virtual int GetHeight() const { return master->GetHeight(); }
virtual agi::vfr::Framerate GetFPS() const { return master->GetFPS(); }
virtual std::vector<int> GetKeyFrames() const { return master->GetKeyFrames(); }
virtual std::string GetWarning() const { return master->GetWarning(); }
virtual std::string GetDecoderName() const { return master->GetDecoderName(); }
};
} // namespace media