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#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <schroedinger/schro.h>
#include <schroedinger/schroarith.h>
#define BUFFER_SIZE 10000
int debug=0;
int verbose = 0;
static void
decode(SchroBuffer *dest, SchroBuffer *src)
{
SchroArith *a;
int i;
int j;
int value;
int bit;
a = schro_arith_new();
schro_arith_decode_init (a, src);
for(i=0;i<dest->length;i++){
value = 0;
if (verbose) printf("%d:\n", i);
for(j=0;j<8;j++){
if (verbose) printf("[%04x %04x] %04x -> ", a->range[0], a->range[1],
a->code);
bit = schro_arith_decode_bit (a, 0);
if (verbose) printf("%d\n", bit);
value |= bit << (7-j);
}
dest->data[i] = value;
}
schro_arith_free(a);
}
static void
encode (SchroBuffer *dest, SchroBuffer *src)
{
SchroArith *a;
int i;
int j;
int bit;
a = schro_arith_new();
schro_arith_encode_init (a, dest);
for(i=0;i<src->length;i++){
if (verbose) printf("%d:\n", i);
for(j=0;j<8;j++){
bit = (src->data[i]>>(7-j))&1;
if (verbose) printf("[%04x %04x] %d\n", a->range[0], a->range[1], bit);
schro_arith_encode_bit (a, 0, bit);
}
}
schro_arith_flush (a);
dest->length = a->offset;
schro_arith_free(a);
}
SchroBuffer *buffer1;
SchroBuffer *buffer2;
SchroBuffer *buffer3;
static int
check (int n)
{
buffer1->length = n;
buffer3->length = n;
encode(buffer2, buffer1);
#if 0
for(i=0;i<4;i++){
printf("%02x\n", buffer2[i]);
}
#endif
decode(buffer3, buffer2);
if (memcmp (buffer1->data, buffer3->data, n)) {
return 0;
}
return 1;
}
int
main (int argc, char *argv[])
{
int i;
int n;
int fail=0;
int j;
schro_init();
buffer1 = schro_buffer_new_and_alloc (1000);
buffer2 = schro_buffer_new_and_alloc (1000);
buffer3 = schro_buffer_new_and_alloc (1000);
for (j = 0; j < 40; j++){
int value;
value = 0xff & rand();
for(i=0;i<100;i++){
buffer1->data[i] = value;
}
for(n=0;n<100;n++){
if (debug) {
printf("Checking: encoding/decoding constant array (size=%d value=%d)\n",
n, value);
}
if (!check(n)){
printf("Failed: encoding/decoding constant array (size=%d value=%d)\n",
n, value);
fail = 1;
}
}
}
for (j = 0; j < 8; j++) {
int mask;
mask = (1<<(j+1)) - 1;
for(i=0;i<100;i++){
buffer1->data[i] = mask & rand();
}
for(n=0;n<100;n++){
if (debug) {
printf("Checking: encoding/decoding masked random array (size=%d mask=%02x)\n",
n, mask);
}
if (!check(n)){
printf("Failed: encoding/decoding masked random array (size=%d mask=%02x)\n",
n, mask);
fail = 1;
}
}
}
for (j = 0; j < 8; j++) {
int mask;
mask = (1<<(j+1)) - 1;
for(i=0;i<100;i++){
buffer1->data[i] = mask & rand();
}
for(n=0;n<100;n++){
if (debug) {
printf("Checking: encoding/decoding masked random array (size=%d mask=%02x)\n",
n, mask);
}
if (!check(n)){
printf("Failed: encoding/decoding masked random array (size=%d mask=%02x)\n",
n, mask);
fail = 1;
}
}
}
return fail;
}
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