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- /*********************************************************************
- Blosc - Blocked Shuffling and Compression Library
- Roundtrip compression/decompression tests.
- Creation date: 2010-06-07
- Author: Francesc Alted <francesc@blosc.org>
- See LICENSES/BLOSC.txt for details about copyright and rights to use.
- **********************************************************************/
- #include "test_common.h"
- #include "../blosc/shuffle.h"
- #include "../blosc/shuffle-generic.h"
- /** Perform a compress + decompress round trip. */
- static int test_compress_roundtrip(size_t type_size, size_t num_elements,
- size_t buffer_alignment, int compression_level, int do_shuffle)
- {
- size_t buffer_size = type_size * num_elements;
- int exit_code;
- /* Allocate memory for the test. */
- void* original = blosc_test_malloc(buffer_alignment, buffer_size);
- void* intermediate = blosc_test_malloc(buffer_alignment, buffer_size + BLOSC_MAX_OVERHEAD);
- void* result = blosc_test_malloc(buffer_alignment, buffer_size);
- /* Fill the input data buffer with random values. */
- blosc_test_fill_random(original, buffer_size);
- /* Compress the input data and store it in an intermediate buffer.
- Decompress the data from the intermediate buffer into a result buffer. */
- blosc_compress(compression_level, do_shuffle, type_size, buffer_size,
- original, intermediate, buffer_size + BLOSC_MAX_OVERHEAD);
- blosc_decompress(intermediate, result, buffer_size);
- /* The round-tripped data matches the original data when the
- result of memcmp is 0. */
- exit_code = memcmp(original, result, buffer_size) ?
- EXIT_FAILURE : EXIT_SUCCESS;
- /* Free allocated memory. */
- blosc_test_free(original);
- blosc_test_free(intermediate);
- blosc_test_free(result);
- return exit_code;
- }
- /** Required number of arguments to this test, including the executable name. */
- #define TEST_ARG_COUNT 7
- int main(int argc, char **argv)
- {
- int shuffle_enabled;
- uint32_t blosc_thread_count;
- uint32_t type_size;
- uint32_t num_elements;
- uint32_t buffer_align_size;
- uint32_t compression_level;
- int result;
- /* argv[1]: sizeof(element type)
- argv[2]: number of elements
- argv[3]: buffer alignment
- argv[4]: compression level
- argv[5]: shuffle enabled
- argv[6]: thread count
- */
- /* Verify the correct number of command-line args have been specified. */
- if (TEST_ARG_COUNT != argc)
- {
- blosc_test_print_bad_argcount_msg(TEST_ARG_COUNT, argc);
- return EXIT_FAILURE;
- }
- /* Parse arguments */
- if (!blosc_test_parse_uint32_t(argv[1], &type_size) || (type_size < 1))
- {
- blosc_test_print_bad_arg_msg(1);
- return EXIT_FAILURE;
- }
- if (!blosc_test_parse_uint32_t(argv[2], &num_elements) || (num_elements < 1))
- {
- blosc_test_print_bad_arg_msg(2);
- return EXIT_FAILURE;
- }
- if (!blosc_test_parse_uint32_t(argv[3], &buffer_align_size)
- || (buffer_align_size & (buffer_align_size - 1))
- || (buffer_align_size < sizeof(void*)))
- {
- blosc_test_print_bad_arg_msg(3);
- return EXIT_FAILURE;
- }
- if (!blosc_test_parse_uint32_t(argv[4], &compression_level) || (compression_level > 9))
- {
- blosc_test_print_bad_arg_msg(4);
- return EXIT_FAILURE;
- }
- {
- uint32_t shuffle_enabled_raw;
- if (!blosc_test_parse_uint32_t(argv[5], &shuffle_enabled_raw) || (shuffle_enabled_raw > 1))
- {
- blosc_test_print_bad_arg_msg(5);
- return EXIT_FAILURE;
- }
- shuffle_enabled = shuffle_enabled_raw == 0 ? 0 : 1;
- }
- if (!blosc_test_parse_uint32_t(argv[6], &blosc_thread_count) || (blosc_thread_count < 1))
- {
- blosc_test_print_bad_arg_msg(6);
- return EXIT_FAILURE;
- }
- /* Initialize blosc before running tests. */
- blosc_init();
- blosc_set_nthreads(blosc_thread_count);
- /* Run the test. */
- result = test_compress_roundtrip(type_size, num_elements, buffer_align_size,
- compression_level, shuffle_enabled);
- /* Cleanup blosc resources. */
- blosc_destroy();
- return result;
- }
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