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Code Issues Releases Activity

move RLTable stuff to its own header

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Originally committed as revision 8401 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2007-03-14 12:29:32 +00:00
parent 6bd10f2de5
commit efddbce9d0
2 changed files with 38 additions and 28 deletions
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29
libavcodec/mpegvideo.h
View File

@ -782,34 +782,7 @@ void ff_mpeg1_encode_init(MpegEncContext *s);
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
void ff_mpeg1_clean_buffers(MpegEncContext *s);
/** 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;
void init_rl(RLTable *rl, int use_static);
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;
}
#include "rl.h"
extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
extern const uint8_t ff_mpeg4_c_dc_scale_table[32];

37
libavcodec/rl.h Normal file
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@ -0,0 +1,37 @@
/**
* @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;
void init_rl(RLTable *rl, int use_static);
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