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/* 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/>.
*
*/
#include "common/scummsys.h"
/* Intel Indeo 3 decompressor, derived from ffmpeg.
*
* Original copyright note:
* Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
* written, produced, and directed by Alan Smithee
*/
#ifndef IMAGE_CODECS_INDEO3_H
#define IMAGE_CODECS_INDEO3_H
#include "image/codecs/codec.h"
namespace Image {
/**
* Intel Indeo 3 decoder.
*
* Used by BMP/AVI.
*
* Used in video:
* - VMDDecoder
*/
class Indeo3Decoder : public Codec {
public:
Indeo3Decoder(uint16 width, uint16 height, uint bitsPerPixel = 24);
~Indeo3Decoder() override;
const Graphics::Surface *decodeFrame(Common::SeekableReadStream &stream) override;
Graphics::PixelFormat getPixelFormat() const override;
bool setOutputPixelFormat(const Graphics::PixelFormat &format) override { _pixelFormat = format; return true; }
static bool isIndeo3(Common::SeekableReadStream &stream);
private:
Graphics::Surface *_surface;
uint16 _width;
uint16 _height;
Graphics::PixelFormat _pixelFormat;
static const byte _corrector_type_0[24];
static const byte _corrector_type_2[8];
static const uint32 correction[];
static const uint32 correctionloworder[];
static const uint32 correctionhighorder[];
struct YUVBufs {
byte *Ybuf;
byte *Ubuf;
byte *Vbuf;
byte *the_buf;
uint32 the_buf_size;
uint16 y_w, y_h;
uint16 uv_w, uv_h;
};
YUVBufs _iv_frame[2];
YUVBufs *_cur_frame;
YUVBufs *_ref_frame;
byte *_ModPred;
byte *_corrector_type;
void buildModPred();
void allocFrames();
void decodeChunk(byte *cur, byte *ref, int width, int height,
const byte *buf1, uint32 fflags2, const byte *hdr,
const byte *buf2, int min_width_160);
};
} // End of namespace Image
#endif
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