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libavcodec/huffman.h

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00001 
00023 #ifndef AVCODEC_HUFFMAN_H
00024 #define AVCODEC_HUFFMAN_H
00025 
00026 #include "avcodec.h"
00027 #include "get_bits.h"
00028 
00029 typedef struct {
00030     int16_t  sym;
00031     int16_t  n0;
00032     uint32_t count;
00033 } Node;
00034 
00035 #define FF_HUFFMAN_FLAG_HNODE_FIRST 0x01
00036 #define FF_HUFFMAN_FLAG_ZERO_COUNT  0x02
00037 
00038 typedef int (*HuffCmp)(const void *va, const void *vb);
00039 int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes,
00040                        Node *nodes, HuffCmp cmp, int flags);
00041 
00042 #endif /* AVCODEC_HUFFMAN_H */

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