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/*
* Copyright (c) 2020 Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include <getopt.h>
#include <stdarg.h>
#include "mlw_encode.h"
#include "mlw_decode.h"
static void fatal_error(const char *format, ...) {
va_list ap;
va_start (ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
exit(1);
}
static void print_usage(void) {
printf("Usage:\n");
printf(" Encode: ./mlw_codec [<options>] [-o <outfile.mlw>] infiles.bin\n");
printf(" Decode: ./mlw_codec [<options>] -d [-o <outfile.bin>] infiles.mlw\n");
printf("\n");
printf("Options:\n");
printf(" -w The uncompressed weight file is an int16_t (word) stream.\n");
printf(" This is to support 9bit signed weights. Little endian is assuemd.\n");
printf(" The default format is int8_t (byte) stream (if -w is not specified)\n");
printf("\n");
}
// Read file into allocated buffer. Return length in bytes.
static int read_file( FILE *f, uint8_t **buf) {
fseek(f, 0, SEEK_END);
int size = ftell(f);
fseek(f, 0, SEEK_SET);
*buf = malloc(size);
assert(*buf);
int rsize = fread(*buf, 1, size, f);
assert(rsize==size);
fclose(f);
return size;
}
#define MAX_INFILES 1000
int main(int argc, char *argv[])
{
int c, decode=0, inbuf_size, outbuf_size;
char *infile_name[MAX_INFILES], *outfile_name=0;
uint8_t *inbuf=0, *outbuf=0;
FILE *infile, *outfile=0;
int verbose=0, infile_idx=0;
int int16_format=0;
if (argc==1) {
print_usage();
exit(1);
}
// Parse command line options
while( optind < argc) {
// Parse options
while ((c = getopt (argc, argv, "di:o:v:w?")) != -1) {
switch (c) {
case 'd':
decode=1;
break;
case 'i':
assert(infile_idx<MAX_INFILES);
infile_name[infile_idx++]=optarg;
break;
case 'o':
outfile_name=optarg;
break;
case 'v':
verbose=atoi(optarg);
break;
case 'w':
int16_format=1;
break;
case '?':
print_usage();
exit(0);
}
}
if (optind<argc) {
assert(infile_idx<MAX_INFILES);
infile_name[infile_idx++]=argv[optind];
optind++;
}
}
if (outfile_name) {
outfile=fopen(outfile_name, "wb");
if (!outfile)
fatal_error("ERROR: cannot open outfile %s\n", outfile_name);
}
// Loop over input files
int nbr_of_infiles=infile_idx;
for(infile_idx=0; infile_idx<nbr_of_infiles; infile_idx++) {
infile=fopen(infile_name[infile_idx], "rb");
if (!infile)
fatal_error("ERROR: cannot open infile %s\n", infile_name[infile_idx]);
// Read infile to buffer
inbuf_size = read_file(infile, &inbuf);
if (!decode) {
// Encode
int i, n = int16_format ? inbuf_size/sizeof(int16_t) : inbuf_size;
int16_t *weights = malloc( n * sizeof(int16_t) );
for(i=0; i<n; i++) {
weights[i] = int16_format ? ((int16_t*)inbuf)[i] : ((int8_t*)inbuf)[i];
}
outbuf_size = mlw_encode( weights, n, &outbuf, verbose);
free(weights);
printf("Input size %d output size %d bpw %4.2f\n", n, outbuf_size, outbuf_size*8.0/n);
} else {
// Decode
int i, n;
int16_t *weights;
n = mlw_decode( inbuf, inbuf_size, &weights, verbose);
outbuf_size = int16_format ? n*sizeof(int16_t) : n;
outbuf = malloc( outbuf_size );
assert(outbuf);
for(i=0; i<n; i++) {
if (int16_format)
((int16_t*)outbuf)[i] = weights[i];
else
outbuf[i] = weights[i];
}
free(weights);
printf("Input size %d output size %d bpw %4.2f\n", inbuf_size, n, inbuf_size*8.0/n);
}
if (outfile) {
fwrite(outbuf, 1, outbuf_size, outfile);
}
if (inbuf)
free(inbuf);
if (outbuf)
free(outbuf);
}
if (outfile) {
fclose(outfile);
}
return 0;
}
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