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move ff_log2_run to bitstream.c and reuse in ffv1.c

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Originally committed as revision 13989 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefan Gehrer 2008-06-26 16:39:21 +00:00
parent dd7a68b6da
commit b3bf98aa56
3 changed files with 16 additions and 20 deletions
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7
libavcodec/bitstream.c
View File

@ -30,6 +30,13 @@
#include "avcodec.h"
#include "bitstream.h"
const uint8_t ff_log2_run[32]={
0, 0, 0, 0, 1, 1, 1, 1,
2, 2, 2, 2, 3, 3, 3, 3,
4, 4, 5, 5, 6, 6, 7, 7,
8, 9,10,11,12,13,14,15
};
/**
* Same as av_mallocz_static(), but does a realloc.
*

22
libavcodec/ffv1.c
View File

@ -34,6 +34,8 @@
#define MAX_PLANES 4
#define CONTEXT_SIZE 32
extern const uint8_t ff_log2_run[32];
static const int8_t quant3[256]={
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
@ -143,12 +145,6 @@ static const int8_t quant13[256]={
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1,
};
static const uint8_t log2_run[32]={
0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
4, 4, 5, 5, 6, 6, 7, 7,
8, 9,10,11,12,13,14,15,
};
typedef struct VlcState{
int16_t drift;
uint16_t error_sum;
@ -396,13 +392,13 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
if(run_mode){
if(diff){
while(run_count >= 1<<log2_run[run_index]){
run_count -= 1<<log2_run[run_index];
while(run_count >= 1<<ff_log2_run[run_index]){
run_count -= 1<<ff_log2_run[run_index];
run_index++;
put_bits(&s->pb, 1, 1);
}
put_bits(&s->pb, 1 + log2_run[run_index], run_count);
put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
if(run_index) run_index--;
run_count=0;
run_mode=0;
@ -419,8 +415,8 @@ static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], in
}
}
if(run_mode){
while(run_count >= 1<<log2_run[run_index]){
run_count -= 1<<log2_run[run_index];
while(run_count >= 1<<ff_log2_run[run_index]){
run_count -= 1<<ff_log2_run[run_index];
run_index++;
put_bits(&s->pb, 1, 1);
}
@ -735,10 +731,10 @@ static inline void decode_line(FFV1Context *s, int w, int_fast16_t *sample[2], i
if(run_mode){
if(run_count==0 && run_mode==1){
if(get_bits1(&s->gb)){
run_count = 1<<log2_run[run_index];
run_count = 1<<ff_log2_run[run_index];
if(x + run_count <= w) run_index++;
}else{
if(log2_run[run_index]) run_count = get_bits(&s->gb, log2_run[run_index]);
if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);
else run_count=0;
if(run_index) run_index--;
run_mode=2;

7
libavcodec/jpegls.c
View File

@ -27,13 +27,6 @@
#include "jpegls.h"
const uint8_t ff_log2_run[32]={
0, 0, 0, 0, 1, 1, 1, 1,
2, 2, 2, 2, 3, 3, 3, 3,
4, 4, 5, 5, 6, 6, 7, 7,
8, 9,10,11,12,13,14,15
};
void ff_jpegls_init_state(JLSState *state){
int i;