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63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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* Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
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*
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* see https://multimedia.cx/huffyuv.txt for a description of
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* the algorithm used
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; 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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* @file
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* huffyuv codec for libavcodec.
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*/
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#ifndef AVCODEC_HUFFYUV_H
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#define AVCODEC_HUFFYUV_H
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#include <stdint.h>
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#include "config.h"
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#if HAVE_BIGENDIAN
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#define B 3
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#define G 2
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#define R 1
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#define A 0
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#else
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#define B 0
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#define G 1
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#define R 2
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#define A 3
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#endif
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#define MAX_BITS 16
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#define MAX_N (1<<MAX_BITS)
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#define MAX_VLC_N 16384
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typedef enum Predictor {
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LEFT = 0,
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PLANE,
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MEDIAN,
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} Predictor;
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void ff_huffyuv_common_end(uint8_t *temp[3], uint16_t *temp16[3]);
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int ff_huffyuv_alloc_temp(uint8_t *temp[3], uint16_t *temp16[3], int width);
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int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n);
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#endif /* AVCODEC_HUFFYUV_H */
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