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/**
* @file test_bit_encode.c Test bitstream encoding
* @author David Huggins-Daines <dhuggins@cs.cmu.edu>
*/
#include "pio.h"
#include "test_macros.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main(int argc, char *argv[])
{
FILE *fh;
bit_encode_t *be;
int i;
static unsigned char const bits[] = "\xde\xad\xbe\xef";
uint32 cw = 0xdeadbeef;
unsigned char inbits[16];
fh = fopen("bittest.out", "wb");
be = bit_encode_attach(fh);
bit_encode_write(be, bits, 8);
bit_encode_write(be, bits + 1, 16);
bit_encode_write(be, bits + 3, 8);
bit_encode_write_cw(be, cw >> 24, 8);
bit_encode_write_cw(be, cw >> 16, 8);
bit_encode_write_cw(be, cw >> 8, 8);
bit_encode_write_cw(be, cw, 8);
bit_encode_write_cw(be, cw >> 26, 6);
bit_encode_write_cw(be, cw >> 14, 12);
bit_encode_write_cw(be, cw >> 8, 6);
bit_encode_write_cw(be, cw, 8);
for (i = 0; i < 32; ++i) {
bit_encode_write_cw(be, cw >> (31-i), 1);
}
bit_encode_flush(be);
bit_encode_free(be);
fclose(fh);
fh = fopen("bittest.out", "rb");
i = fread(inbits, 1, 16, fh);
TEST_ASSERT(0 == memcmp(inbits, bits, 4));
TEST_ASSERT(0 == memcmp(inbits + 4, bits, 4));
TEST_ASSERT(0 == memcmp(inbits + 8, bits, 4));
TEST_ASSERT(0 == memcmp(inbits + 12, bits, 4));
fclose(fh);
return 0;
}
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