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Drop broken and unused CABAC test program.

tags/n1.1
Diego Biurrun 13 years ago
parent
commit
da39cac8de
2 changed files with 1 additions and 149 deletions
  1. +1
    -2
      libavcodec/Makefile
  2. +0
    -147
      libavcodec/cabac.c

+ 1
- 2
libavcodec/Makefile View File

@@ -676,8 +676,7 @@ SKIPHEADERS-$(HAVE_W32THREADS) += w32pthreads.h

EXAMPLES = api

TESTPROGS = cabac \
dct \
TESTPROGS = dct \
fft \
fft-fixed \
golomb \


+ 0
- 147
libavcodec/cabac.c View File

@@ -162,150 +162,3 @@ void ff_init_cabac_states(CABACContext *c){
ff_h264_last_coeff_flag_offset_8x8[i] = last_coeff_flag_offset_8x8[i];
}
}

#ifdef TEST
#define SIZE 10240

#include "libavutil/lfg.h"
#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 = h264_mps_state[*state];
}else{
c->low += c->range - RangeLPS;
c->range = RangeLPS;
}

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) )
av_log(NULL, AV_LOG_ERROR, "CABAC bypass failure at %d\n", i);
STOP_TIMER("get_cabac_bypass")
}

for(i=0; i<SIZE; i++){
START_TIMER
if( (r[i]&1) != get_cabac(&c, state) )
av_log(NULL, AV_LOG_ERROR, "CABAC failure at %d\n", i);
STOP_TIMER("get_cabac")
}
if(!get_cabac_terminate(&c))
av_log(NULL, AV_LOG_ERROR, "where's the Terminator?\n");

return 0;
}

#endif /* TEST */

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