[pcsx_rearmed.git] / deps / libchdr / deps / zstd-1.5.5 / build / single_file_libs / examples / roundtrip.c

/*
 * \file roundtrip.c
 * In this example we include \c zstd.h and compile separately the amalgamated
 * \c zstd.c:
 * \code
 *	cc -Wall -Wextra -Werror -I. -Os -g0 zstd.c examples/roundtrip.c 
 * \endcode
 *
 * \author Carl Woffenden, Numfum GmbH (released under a CC0 license)
 */

#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "zstd.h"

//************************** Test Data (DXT texture) **************************/

/**
 * Raw test data (borrowed from the Emscripten example).
 * \n
 * See \c testcard.png for the original.
 */
static uint8_t const rawData[] = {
#include "testcard-dxt1.inl"
};

#ifndef ZSTD_VERSION_MAJOR
/*
 * For the case where the decompression library hasn't been included we add
 * dummy functions to fake the process and stop the buffers being optimised out.
 */
size_t ZSTD_compressBound(size_t maxSrc) {
	return maxSrc + 32;
}
int ZSTD_maxCLevel(void) {
	return 20;
}
size_t ZSTD_compress(void* dst, size_t dstLen, const void* src, size_t srcLen, int level) {
	return (memcmp(dst, src, (srcLen < dstLen) ? srcLen : dstLen)) ? level : dstLen;
}
unsigned ZSTD_isError(size_t code) {
	return ((int) code) < 0;
}
size_t ZSTD_decompress(void* dst, size_t dstLen, const void* src, size_t srcLen) {
	return (memcmp(dst, src, (srcLen < dstLen) ? srcLen : dstLen)) ? 0 : dstLen;
}
#endif

//*****************************************************************************/

/**
 * Simple single-file test to compress \c rawData, decompress the result, then
 * compare the decompressed version with the original.
 */
int main() {
	size_t bounds = ZSTD_compressBound(sizeof rawData);
	void* compBuf = malloc(bounds);
	void* testBuf = malloc(sizeof rawData);
	int compare   = -1;
	if (compBuf && testBuf) {
		size_t compSize = ZSTD_compress(compBuf, bounds, rawData, sizeof rawData, ZSTD_maxCLevel());
		if (!ZSTD_isError(compSize)) {
			printf("Compression: PASSED (size: %lu, uncompressed: %lu)\n", (unsigned long) compSize, (unsigned long) (sizeof rawData));
			size_t decSize = ZSTD_decompress(testBuf, sizeof rawData, compBuf, compSize);
			if (!ZSTD_isError(decSize)) {
				printf("Decompression: PASSED\n");
				compare = memcmp(rawData, testBuf, decSize);
				printf("Byte comparison: %s\n", (compare == 0) ? "PASSED" : "FAILED");
			} else {
				printf("Decompression: FAILED\n");
			}
		} else {
			printf("Compression: FAILED\n");
		}
		free(compBuf);
		free(testBuf);
	}
	return (compare == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
}
Commit	Line	Data
648db22b	1	/*
	2	* \file roundtrip.c
	3	* In this example we include \c zstd.h and compile separately the amalgamated
	4	* \c zstd.c:
	5	* \code
	6	* cc -Wall -Wextra -Werror -I. -Os -g0 zstd.c examples/roundtrip.c
	7	* \endcode
	8	*
	9	* \author Carl Woffenden, Numfum GmbH (released under a CC0 license)
	10	*/
	11
	12	#include <stddef.h>
	13	#include <stdint.h>
	14	#include <stdio.h>
	15	#include <stdlib.h>
	16	#include <string.h>
	17
	18	#include "zstd.h"
	19
	20	//************************ Test Data (DXT texture) ************************/
	21
	22	/**
	23	* Raw test data (borrowed from the Emscripten example).
	24	* \n
	25	* See \c testcard.png for the original.
	26	*/
	27	static uint8_t const rawData[] = {
	28	#include "testcard-dxt1.inl"
	29	};
	30
	31	#ifndef ZSTD_VERSION_MAJOR
	32	/*
	33	* For the case where the decompression library hasn't been included we add
	34	* dummy functions to fake the process and stop the buffers being optimised out.
	35	*/
	36	size_t ZSTD_compressBound(size_t maxSrc) {
	37	return maxSrc + 32;
	38	}
	39	int ZSTD_maxCLevel(void) {
	40	return 20;
	41	}
	42	size_t ZSTD_compress(void* dst, size_t dstLen, const void* src, size_t srcLen, int level) {
	43	return (memcmp(dst, src, (srcLen < dstLen) ? srcLen : dstLen)) ? level : dstLen;
	44	}
	45	unsigned ZSTD_isError(size_t code) {
	46	return ((int) code) < 0;
	47	}
	48	size_t ZSTD_decompress(void* dst, size_t dstLen, const void* src, size_t srcLen) {
	49	return (memcmp(dst, src, (srcLen < dstLen) ? srcLen : dstLen)) ? 0 : dstLen;
	50	}
	51	#endif
	52
	53	//*****************************************************************************/
	54
	55	/**
	56	* Simple single-file test to compress \c rawData, decompress the result, then
	57	* compare the decompressed version with the original.
	58	*/
	59	int main() {
	60	size_t bounds = ZSTD_compressBound(sizeof rawData);
	61	void* compBuf = malloc(bounds);
	62	void* testBuf = malloc(sizeof rawData);
	63	int compare = -1;
	64	if (compBuf && testBuf) {
65	size_t compSize = ZSTD_compress(compBuf, bounds, rawData, sizeof rawData, ZSTD_maxCLevel());
66	if (!ZSTD_isError(compSize)) {
67	printf("Compression: PASSED (size: %lu, uncompressed: %lu)\n", (unsigned long) compSize, (unsigned long) (sizeof rawData));
68	size_t decSize = ZSTD_decompress(testBuf, sizeof rawData, compBuf, compSize);
69	if (!ZSTD_isError(decSize)) {
70	printf("Decompression: PASSED\n");
71	compare = memcmp(rawData, testBuf, decSize);
72	printf("Byte comparison: %s\n", (compare == 0) ? "PASSED" : "FAILED");
73	} else {
74	printf("Decompression: FAILED\n");
75	}
76	} else {
77	printf("Compression: FAILED\n");
78	}
79	free(compBuf);
80	free(testBuf);
81	}
82	return (compare == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
83	}