mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/**
|
|
* @file rl.h
|
|
* rl header.
|
|
*/
|
|
|
|
#ifndef AVCODEC_RL_H
|
|
#define AVCODEC_RL_H
|
|
|
|
/** RLTable. */
|
|
typedef struct RLTable {
|
|
int n; ///< number of entries of table_vlc minus 1
|
|
int last; ///< number of values for last = 0
|
|
const uint16_t (*table_vlc)[2];
|
|
const int8_t *table_run;
|
|
const int8_t *table_level;
|
|
uint8_t *index_run[2]; ///< encoding only
|
|
int8_t *max_level[2]; ///< encoding & decoding
|
|
int8_t *max_run[2]; ///< encoding & decoding
|
|
VLC vlc; ///< decoding only deprected FIXME remove
|
|
RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
|
|
} RLTable;
|
|
|
|
/**
|
|
*
|
|
* @param static_store static uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3] which will hold
|
|
* the level and run tables, if this is NULL av_malloc() will be used
|
|
*/
|
|
void init_rl(RLTable *rl, uint8_t static_store[2][2*MAX_RUN + MAX_LEVEL + 3]);
|
|
void init_vlc_rl(RLTable *rl, int use_static);
|
|
|
|
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
|
|
{
|
|
int index;
|
|
index = rl->index_run[last][run];
|
|
if (index >= rl->n)
|
|
return rl->n;
|
|
if (level > rl->max_level[last][run])
|
|
return rl->n;
|
|
return index + level - 1;
|
|
}
|
|
|
|
#endif
|