---
libavcodec/cabac.c | 109 ----------------------------------------------------
1 files changed, 0 insertions(+), 109 deletions(-)
diff --git a/libavcodec/cabac.c b/libavcodec/cabac.c
index 54414fa..f299de6 100644
--- a/libavcodec/cabac.c
+++ b/libavcodec/cabac.c
@@ -162,126 +162,17 @@ void ff_init_cabac_states(CABACContext *c){
#include "avcodec.h"
#include "cabac.h"
-static inline void put_cabac_bit(CABACContext *c, int b){
- put_bits(&c->pb, 1, b);
- for(;c->outstanding_count; c->outstanding_count--){
- put_bits(&c->pb, 1, 1-b);
- }
-}
-
-static inline void renorm_cabac_encoder(CABACContext *c){
- while(c->range < 0x100){
- //FIXME optimize
- if(c->low<0x100){
- put_cabac_bit(c, 0);
- }else if(c->low<0x200){
- c->outstanding_count++;
- c->low -= 0x100;
- }else{
- put_cabac_bit(c, 1);
- c->low -= 0x200;
- }
-
- c->range+= c->range;
- c->low += c->low;
- }
-}
-
-static void put_cabac(CABACContext *c, uint8_t * const state, int bit){
- int RangeLPS= ff_h264_lps_range[2*(c->range&0xC0) + *state];
-
- if(bit == ((*state)&1)){
- c->range -= RangeLPS;
- *state= ff_h264_mps_state[*state];
- }else{
- c->low += c->range - RangeLPS;
- c->range = RangeLPS;
- *state= ff_h264_lps_state[*state];
- }
-
- renorm_cabac_encoder(c);
-}
-
-/**
- * @param bit 0 -> write zero bit, !=0 write one bit
- */
-static void put_cabac_bypass(CABACContext *c, int bit){
- c->low += c->low;
-
- if(bit){
- c->low += c->range;
- }
-//FIXME optimize
- if(c->low<0x200){
- put_cabac_bit(c, 0);
- }else if(c->low<0x400){
- c->outstanding_count++;
- c->low -= 0x200;
- }else{
- put_cabac_bit(c, 1);
- c->low -= 0x400;
- }
-}
-
-/**
- *
- * @return the number of bytes written
- */
-static int put_cabac_terminate(CABACContext *c, int bit){
- c->range -= 2;
-
- if(!bit){
- renorm_cabac_encoder(c);
- }else{
- c->low += c->range;
- c->range= 2;
-
- renorm_cabac_encoder(c);
-
- assert(c->low <= 0x1FF);
- put_cabac_bit(c, c->low>>9);
- put_bits(&c->pb, 2, ((c->low>>7)&3)|1);
-
- flush_put_bits(&c->pb); //FIXME FIXME FIXME XXX wrong
- }
-
- return (put_bits_count(&c->pb)+7)>>3;
-}
-
int main(void){
CABACContext c;
uint8_t b[9*SIZE];
uint8_t r[9*SIZE];
int i;
uint8_t state[10]= {0};
- AVLFG prng;
- av_lfg_init(&prng, 1);
- ff_init_cabac_encoder(&c, b, SIZE);
ff_init_cabac_states(&c);
- for(i=0; i<SIZE; i++){
- r[i] = av_lfg_get(&prng) % 7;
- }
-
- for(i=0; i<SIZE; i++){
-START_TIMER
- put_cabac_bypass(&c, r[i]&1);
-STOP_TIMER("put_cabac_bypass")
- }
-
- for(i=0; i<SIZE; i++){
-START_TIMER
- put_cabac(&c, state, r[i]&1);
-STOP_TIMER("put_cabac")
- }
-
- put_cabac_terminate(&c, 1);
-
ff_init_cabac_decoder(&c, b, SIZE);
- memset(state, 0, sizeof(state));
-
for(i=0; i<SIZE; i++){
START_TIMER
if( (r[i]&1) != get_cabac_bypass(&c) )
--
1.7.1
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