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  modification, are permitted provided that the following conditions
  are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in
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      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#define _FILE_OFFSET_BITS 64
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <getopt.h>
#include "igzip_lib.h"
#include "test.h"

#define BUF_SIZE 1024
#define MIN_TEST_LOOPS   10
#ifndef RUN_MEM_SIZE
# define RUN_MEM_SIZE 500000000
#endif

int level_size_buf[10] = {
#ifdef ISAL_DEF_LVL0_DEFAULT
	ISAL_DEF_LVL0_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL1_DEFAULT
	ISAL_DEF_LVL1_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL2_DEFAULT
	ISAL_DEF_LVL2_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL3_DEFAULT
	ISAL_DEF_LVL3_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL4_DEFAULT
	ISAL_DEF_LVL4_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL5_DEFAULT
	ISAL_DEF_LVL5_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL6_DEFAULT
	ISAL_DEF_LVL6_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL7_DEFAULT
	ISAL_DEF_LVL7_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL8_DEFAULT
	ISAL_DEF_LVL8_DEFAULT,
#else
	0,
#endif
#ifdef ISAL_DEF_LVL9_DEFAULT
	ISAL_DEF_LVL9_DEFAULT,
#else
	0,
#endif
};

struct isal_zstream stream;

int usage(void)
{
	fprintf(stderr,
		"Usage: igzip_file_perf [options] <infile>\n"
		"  -h        help\n"
		"  -X        use compression level X with 0 <= X <= 1\n"
		"  -b <size> input buffer size, 0 buffers all the input\n"
		"  -i <iter> number of iterations (at least 1)\n"
		"  -o <file> output file for compresed data\n"
		"  -d <file> dictionary file used by compression\n"
		"  -w <size> log base 2 size of history window, between 8 and 15\n");

	exit(0);
}

int main(int argc, char *argv[])
{
	FILE *in = NULL, *out = NULL, *dict = NULL;
	unsigned char *inbuf, *outbuf, *level_buf = NULL, *dictbuf = NULL;
	int i, c, iterations = 0, inbuf_size = 0;
	uint64_t infile_size, outbuf_size, dictfile_size;
	struct isal_huff_histogram histogram;
	struct isal_hufftables hufftables_custom;
	int level = 0, level_size = 0, avail_in;
	char *in_file_name = NULL, *out_file_name = NULL, *dict_file_name = NULL;
	uint32_t hist_bits = 0;

	while ((c = getopt(argc, argv, "h0123456789i:b:o:d:w:")) != -1) {
		if (c >= '0' && c <= '9') {
			if (c > '0' + ISAL_DEF_MAX_LEVEL)
				usage();
			else {
				level = c - '0';
				level_size = level_size_buf[level];
			}
			continue;
		}

		switch (c) {
		case 'o':
			out_file_name = optarg;
			break;
		case 'd':
			dict_file_name = optarg;
			break;
		case 'i':
			iterations = atoi(optarg);
			if (iterations < 1)
				usage();
			break;
		case 'b':
			inbuf_size = atoi(optarg);
			break;
		case 'w':
			hist_bits = atoi(optarg);
			if (hist_bits > 15 || hist_bits < 8)
				usage();
			break;
		case 'h':
		default:
			usage();
			break;
		}
	}

	if (optind < argc) {
		in_file_name = argv[optind];
		in = fopen(in_file_name, "rb");
	} else
		usage();

	if (!in) {
		fprintf(stderr, "Can't open %s for reading\n", in_file_name);
		exit(0);
	}
	if (out_file_name != NULL) {
		out = fopen(out_file_name, "wb");
		if (!out) {
			fprintf(stderr, "Can't open %s for writing\n", out_file_name);
			exit(0);
		}
		printf("outfile=%s\n", out_file_name);
	}

	if (dict_file_name != NULL) {
		dict = fopen(dict_file_name, "rb");
		if (!dict) {
			fprintf(stderr, "Can't open %s for reading\n", dict_file_name);
			exit(0);
		}
		printf("outfile=%s\n", dict_file_name);
	}

	if (hist_bits == 0)
		printf("Window Size: %d K\n", IGZIP_HIST_SIZE / 1024);

	else if (hist_bits < 10)
		printf("Window Size: %.2f K\n", 1.0 * (1 << hist_bits) / 1024);
	else
		printf("Window Size: %d K\n", (1 << hist_bits) / 1024);

	printf("igzip_file_perf: \n");
	fflush(0);

	/* Allocate space for entire input file and output
	 * (assuming some possible expansion on output size)
	 */
	infile_size = get_filesize(in);

	outbuf_size = 2 * infile_size + BUF_SIZE;

	dictfile_size = (dict_file_name != NULL) ? get_filesize(dict) : 0;

	if (iterations == 0) {
		iterations = infile_size ? RUN_MEM_SIZE / infile_size : MIN_TEST_LOOPS;
		if (iterations < MIN_TEST_LOOPS)
			iterations = MIN_TEST_LOOPS;
	}

	inbuf = malloc(infile_size);
	if (inbuf == NULL) {
		fprintf(stderr, "Can't allocate input buffer memory\n");
		exit(0);
	}
	outbuf = malloc(outbuf_size);
	if (outbuf == NULL) {
		fprintf(stderr, "Can't allocate output buffer memory\n");
		exit(0);
	}

	if (dictfile_size != 0) {
		dictbuf = malloc(dictfile_size);
		if (dictbuf == NULL) {
			fprintf(stderr, "Can't allocate dictionary buffer memory\n");
			exit(0);
		}
	}

	if (level_size != 0) {
		level_buf = malloc(level_size);
		if (level_buf == NULL) {
			fprintf(stderr, "Can't allocate level buffer memory\n");
			exit(0);
		}
	}

	inbuf_size = inbuf_size ? inbuf_size : infile_size;

	printf("igzip_file_perf: %s %d iterations\n", in_file_name, iterations);

	/* Read complete input file into buffer */
	stream.avail_in = (uint32_t) fread(inbuf, 1, infile_size, in);
	if (stream.avail_in != infile_size) {
		fprintf(stderr, "Couldn't fit all of input file into buffer\n");
		exit(0);
	}

	/* Read complete dictionary into buffer */
	if ((dictfile_size != 0) && (dictfile_size != fread(dictbuf, 1, dictfile_size, dict))) {
		fprintf(stderr, "Couldn't fit all of dictionary file into buffer\n");
		exit(0);
	}

	struct perf start, stop;
	perf_start(&start);

	for (i = 0; i < iterations; i++) {
		isal_deflate_init(&stream);
		if (dict_file_name != NULL)
			isal_deflate_set_dict(&stream, dictbuf, dictfile_size);
		stream.end_of_stream = 0;
		stream.flush = NO_FLUSH;
		stream.level = level;
		stream.level_buf = level_buf;
		stream.level_buf_size = level_size;
		stream.next_out = outbuf;
		stream.avail_out = outbuf_size;
		stream.next_in = inbuf;
		stream.hist_bits = hist_bits;
		avail_in = infile_size;

		while (avail_in > 0) {
			stream.avail_in = avail_in >= inbuf_size ? inbuf_size : avail_in;
			avail_in -= inbuf_size;

			if (avail_in <= 0)
				stream.end_of_stream = 1;

			isal_deflate(&stream);

			if (stream.avail_in != 0)
				break;
		}
	}

	perf_stop(&stop);

	if (stream.avail_in != 0) {
		fprintf(stderr, "Could not compress all of inbuf\n");
		exit(0);
	}

	printf("  file %s - in_size=%lu out_size=%d iter=%d ratio=%3.1f%%",
	       in_file_name, infile_size, stream.total_out, i,
	       100.0 * stream.total_out / infile_size);

	if (level == 0) {
		memset(&histogram, 0, sizeof(histogram));

		isal_update_histogram(inbuf, infile_size, &histogram);
		isal_create_hufftables(&hufftables_custom, &histogram);

		isal_deflate_init(&stream);
		stream.end_of_stream = 0;
		stream.flush = NO_FLUSH;
		stream.level = level;
		stream.level_buf = level_buf;
		stream.level_buf_size = level_size;
		stream.next_out = outbuf;
		stream.avail_out = outbuf_size;
		stream.next_in = inbuf;
		stream.hufftables = &hufftables_custom;
		stream.hist_bits = hist_bits;
		avail_in = infile_size;

		while (avail_in > 0) {
			stream.avail_in = avail_in >= inbuf_size ? inbuf_size : avail_in;
			avail_in -= inbuf_size;

			if (avail_in <= 0)
				stream.end_of_stream = 1;

			isal_deflate(&stream);

			if (stream.avail_in != 0)
				break;
		}

		printf(" ratio_custom=%3.1f%%", 100.0 * stream.total_out / infile_size);
	}
	printf("\n");

	if (stream.avail_in != 0) {
		fprintf(stderr, "Could not compress all of inbuf\n");
		exit(0);
	}

	printf("igzip_file: ");
	perf_print(stop, start, (long long)infile_size * i);

	if (argc > 2 && out) {
		printf("writing %s\n", out_file_name);
		fwrite(outbuf, 1, stream.total_out, out);
		fclose(out);
	}

	fclose(in);
	printf("End of igzip_file_perf\n\n");
	fflush(0);
	return 0;
}