-/**
- * @file huffman.h
- * huffman tree builder and VLC generator
+/*
* Copyright (C) 2007 Aurelien Jacobs <aurel@gnuage.org>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; 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
+/**
+ * @file
+ * huffman tree builder and VLC generator
+ */
+
+#ifndef AVCODEC_HUFFMAN_H
+#define AVCODEC_HUFFMAN_H
#include "avcodec.h"
-#include "bitstream.h"
+#include "vlc.h"
-typedef struct {
+typedef struct Node {
int16_t sym;
int16_t n0;
uint32_t count;
} Node;
#define FF_HUFFMAN_FLAG_HNODE_FIRST 0x01
+#define FF_HUFFMAN_FLAG_ZERO_COUNT 0x02
+#define FF_HUFFMAN_BITS 10
+
+typedef int (*HuffCmp)(const void *va, const void *vb);
+int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes, int nb_bits,
+ Node *nodes, HuffCmp cmp, int flags);
-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 flags);
+void ff_huff_gen_len_table(uint8_t *dst, const uint64_t *stats);
-#endif /* FFMPEG_HUFFMAN_H */
+#endif /* AVCODEC_HUFFMAN_H */