lz4frame test program

lz4test.cpp

#include <cstdlib>
#include <string>
#include <cassert>
#include "lz4frame.h"

const int data_size = 550 * 1024;
const int chunk_size = 256 * 1024;
void main()
{
	// genearate some data
	unsigned char data[data_size];
	unsigned char *data_ptr = &data[0];

	for (int i = 0; i < data_size; i++)
	{
		data[i] = std::rand();
	}

	// frame settings
	LZ4F_preferences_t prefs;
	memset(&prefs, 0, sizeof(prefs));
	prefs.frameInfo.blockMode = blockIndependent;
	prefs.frameInfo.blockSizeID = LZ4F_max256KB;
	prefs.frameInfo.contentChecksumFlag = noContentChecksum;
	prefs.compressionLevel = 1;
	prefs.autoFlush = 0;

	LZ4F_compressionContext_t ctx;
	LZ4F_errorCode_t result = LZ4F_createCompressionContext(&ctx, LZ4F_VERSION);
	assert(!LZ4F_isError(result));
	size_t buffer_size = LZ4F_compressFrameBound(chunk_size, NULL);
	void *buffer = malloc(buffer_size);

	result = LZ4F_compressBegin(ctx, buffer, buffer_size, &prefs);
	assert(!LZ4F_isError(result));

	size_t bytes_to_write = LZ4F_compressUpdate(ctx, buffer, buffer_size, data_ptr, chunk_size, NULL);
	assert(!LZ4F_isError(bytes_to_write));

	result = LZ4F_compressEnd(ctx, buffer, buffer_size, NULL);
	assert(!LZ4F_isError(result));

	free(buffer);
}