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/*
* Copyright (C) 2015 Andreas Steffen
* HSR Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "test_suite.h"
#include <bliss_huffman_coder.h>
static chunk_t data = chunk_from_chars(0x5f, 0x71, 0x9e, 0x4c);
START_TEST(test_bliss_huffman_encode)
{
bliss_bitpacker_t *packer;
bliss_huffman_code_t *code;
bliss_huffman_coder_t *coder;
chunk_t encoding;
packer = bliss_bitpacker_create(32);
ck_assert(packer);
code = bliss_huffman_code_get_by_id(BLISS_B_I);
ck_assert(code);
coder = bliss_huffman_coder_create(code, packer);
ck_assert(coder);
ck_assert( coder->encode(coder, 0, 0)); /* 0 */
ck_assert( coder->encode(coder, 1, 0)); /* 10 */
ck_assert( coder->encode(coder, 2, 0)); /* 111 */
ck_assert( coder->encode(coder, 0, 1)); /* 1101 */
ck_assert( coder->encode(coder, 0, -1)); /* 11000 */
ck_assert( coder->encode(coder, 1, 1)); /* 110011 */
ck_assert( coder->encode(coder, 1, -1)); /* 1100100 */
ck_assert(!coder->encode(coder, 3, 0)); /* 11001010 */
ck_assert(!coder->encode(coder, 8, 0)); /* - */
encoding = packer->extract_buf(packer);
ck_assert(chunk_equals(encoding, data));
chunk_free(&encoding);
coder->destroy(coder);
packer->destroy(packer);
}
END_TEST
START_TEST(test_bliss_huffman_decode)
{
bliss_bitpacker_t *packer;
bliss_huffman_code_t *code;
bliss_huffman_coder_t *coder;
int32_t z1;
int16_t z2;
packer = bliss_bitpacker_create_from_data(data);
ck_assert(packer);
code = bliss_huffman_code_get_by_id(BLISS_II);
ck_assert(!code);
code = bliss_huffman_code_get_by_id(BLISS_B_II);
ck_assert(!code);
code = bliss_huffman_code_get_by_id(BLISS_B_I);
ck_assert(code);
coder = bliss_huffman_coder_create(code, packer);
ck_assert(coder);
ck_assert(coder->decode(coder, &z1, &z2)); /* 0 */
ck_assert(z1 == 0 && z2 == 0);
ck_assert(coder->decode(coder, &z1, &z2)); /* 10 */
ck_assert(z1 == 1 && z2 == 0);
ck_assert(coder->decode(coder, &z1, &z2)); /* 111 */
ck_assert(z1 == 2 && z2 == 0);
ck_assert(coder->decode(coder, &z1, &z2)); /* 1101 */
ck_assert(z1 == 0 && z2 == 1);
ck_assert(coder->decode(coder, &z1, &z2)); /* 11000 */
ck_assert(z1 == 0 && z2 == -1);
ck_assert(coder->decode(coder, &z1, &z2)); /* 110011 */
ck_assert(z1 == 1 && z2 == 1);
ck_assert(coder->decode(coder, &z1, &z2)); /* 1100100 */
ck_assert(z1 == 1 && z2 == -1);
ck_assert(!coder->decode(coder, &z1, &z2)); /* 11001010 */
coder->destroy(coder);
packer->destroy(packer);
}
END_TEST
Suite *bliss_huffman_suite_create()
{
Suite *s;
TCase *tc;
s = suite_create("bliss_huffman");
tc = tcase_create("huffman_encode");
tcase_add_test(tc, test_bliss_huffman_encode);
suite_add_tcase(s, tc);
tc = tcase_create("huffman_decode");
tcase_add_test(tc, test_bliss_huffman_decode);
suite_add_tcase(s, tc);
return s;
}
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