wmv2data.h

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

/* Based on the WMV2 implementation in FFmpeg (<https://ffmpeg.org/)>,
 * which is released under the terms of version 2 or later of the GNU
 * Lesser General Public License.
 *
 * The original copyright notes in the file libavcodec/wmv2dec.c reads as follows:
 *
 * Copyright (c) 2002 The FFmpeg Project
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef VIDEO_CODECS_WMV2DATA_H
#define VIDEO_CODECS_WMV2DATA_H

#include "src/common/types.h"
#include "src/common/huffman.h"

namespace Video {

struct WMV2ACCoefficientTable {
    const Common::HuffmanTable &huffman;
    uint32 escapeCode;

    uint32 lastRunIndex;

    // Run tables
    const uint8 *runTable;          
    const uint8 *runDeltaTable;     
    const uint8 *runDeltaTableLast; 

    // Level tables
    const uint8 *levelTable;          
    const uint8 *levelDeltaTable;     
    const uint8 *levelDeltaTableLast; 
};

struct WMV2MVTable {
    uint32 count; 

    const Common::HuffmanTable &huffman;

    const uint8 *diffX; 
    const uint8 *diffY; 
};


extern const Common::HuffmanTable wmv2HuffmanIMB;

extern const Common::HuffmanTable wmv2HuffmanDC[2][2];

extern const WMV2ACCoefficientTable wmv2AC[2][3];

extern const Common::HuffmanTable wmv2HuffmanPMB[3];

extern const WMV2MVTable wmv2MV[2];


extern const uint8 wmv2ZigZagHorizontal[64];
extern const uint8 wmv2ZigZagVertical[64];
extern const uint8 wmv2ZigZagNormal[64];

extern const uint8 wmv2ZigZag8x8[64];
extern const uint8 wmv2ZigZag8x4[32];
extern const uint8 wmv2ZigZag4x8[32];

} // End of namespace Video

#endif // VIDEO_CODECS_WMV2DATA_H