PeerStreamer

/**

 * @file huffman.h

 * huffman tree builder and VLC generator

 * Copyright (C) 2007  Aurelien Jacobs <aurel@gnuage.org>

 *

 * 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 FFMPEG_HUFFMAN_H

#define FFMPEG_HUFFMAN_H

#include "avcodec.h"

typedef struct {

    int16_t  sym;

    int16_t  n0;

    uint32_t count;

} Node;

typedef int (*huff_cmp_t)(const void *va, const void *vb);

int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes,

                       Node *nodes, huff_cmp_t cmp, int hnode_first);

#endif /* FFMPEG_HUFFMAN_H */