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47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/**
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* @file rl.h
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* rl header.
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*/
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#ifndef AVCODEC_RL_H
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#define AVCODEC_RL_H
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#include <stdint.h>
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#include "bitstream.h"
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#include "mpegvideo.h"
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/** RLTable. */
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typedef struct RLTable {
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int n; ///< number of entries of table_vlc minus 1
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int last; ///< number of values for last = 0
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const uint16_t (*table_vlc)[2];
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const int8_t *table_run;
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const int8_t *table_level;
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uint8_t *index_run[2]; ///< encoding only
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int8_t *max_level[2]; ///< encoding & decoding
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int8_t *max_run[2]; ///< encoding & decoding
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VLC vlc; ///< decoding only deprected FIXME remove
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RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
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} RLTable;
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/**
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*
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* @param static_store static uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3] which will hold
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* the level and run tables, if this is NULL av_malloc() will be used
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*/
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void init_rl(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3]);
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void init_vlc_rl(RLTable *rl, int use_static);
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static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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{
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int index;
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index = rl->index_run[last][run];
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if (index >= rl->n)
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return rl->n;
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if (level > rl->max_level[last][run])
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return rl->n;
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return index + level - 1;
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}
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#endif
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