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83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program 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
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef VIDEO_CODECS_CODEC_H
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#define VIDEO_CODECS_CODEC_H
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#include "graphics/surface.h"
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#include "graphics/pixelformat.h"
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namespace Common {
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class SeekableReadStream;
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}
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namespace Video {
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/**
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* An abstract representation of a video codec used for decoding
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* video frames.
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*
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* Used in video:
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* - AVIDecoder
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* - QuickTimeDecoder
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* - VMDDecoder
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*/
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class Codec {
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public:
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Codec() {}
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virtual ~Codec() {}
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/**
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* Decode the frame for the given data and return a pointer to a surface
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* containing the decoded frame.
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*
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* @return a pointer to the decoded frame
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* @note stream is not deleted
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*/
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virtual const Graphics::Surface *decodeImage(Common::SeekableReadStream *stream) = 0;
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/**
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* Get the format that the surface returned from decodeImage() will
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* be in.
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*/
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virtual Graphics::PixelFormat getPixelFormat() const = 0;
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/**
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* Can this codec's frames contain a palette?
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*/
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virtual bool containsPalette() const { return false; }
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/**
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* Get the palette last decoded from decodeImage
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*/
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virtual const byte *getPalette() { return 0; }
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/**
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* Does the codec have a dirty palette?
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*/
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virtual bool hasDirtyPalette() const { return false; }
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};
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} // End of namespace Video
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#endif
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