codec.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef IMAGE_CODECS_CODEC_H
#define IMAGE_CODECS_CODEC_H

#include "graphics/surface.h"
#include "graphics/pixelformat.h"

#include "image/codec-options.h"

namespace Common {
class SeekableReadStream;
}

namespace Image {

class Codec {
public:
    Codec() {}
    virtual ~Codec() {}

    enum DitherType {
        kDitherTypeUnknown,

        kDitherTypeVFW,

        kDitherTypeQT
    };

    virtual const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream) = 0;

    virtual Graphics::PixelFormat getPixelFormat() const = 0;

    virtual bool setOutputPixelFormat(const Graphics::PixelFormat &format) { return false; }

    virtual bool containsPalette() const { return false; }

    virtual const byte *getPalette() { return 0; }

    virtual bool hasDirtyPalette() const { return false; }

    virtual bool canDither(DitherType type) const { return false; }

    virtual void setDither(DitherType type, const byte *palette) {}

    virtual void setCodecAccuracy(CodecAccuracy accuracy) {}

    static byte *createQuickTimeDitherTable(const byte *palette, uint colorCount);
};

Codec *createBitmapCodec(uint32 tag, uint32 streamTag, int width, int height, int bitsPerPixel);

Codec *createQuickTimeCodec(uint32 tag, int width, int height, int bitsPerPixel);

} // End of namespace Image

#endif