141 lines
4.2 KiB
C
141 lines
4.2 KiB
C
/*
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inhal - HAL Laboratory compression tool
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Usage:
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inhal [-fast] infile romfile offset
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inhal -n [-fast] infile outfile
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Copyright (c) 2013 Devin Acker
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include "compress.h"
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int main (int argc, char **argv) {
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printf("inhal - " __DATE__ " " __TIME__"\nby Devin Acker (Revenant)\n\n");
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if (argc < 4) {
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fprintf(stderr, "To insert compressed data into a ROM:\n"
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"%s [-fast] infile romfile offset\n"
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"To write compressed data to a new file:\n"
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"%s [-fast] -n infile outfile\n\n"
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"Running with the -fast switch increases compression speed at the expense of size.\n"
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"\nExample:\n%s -fast test.chr kirbybowl.sfc 0x70000\n"
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"%s -n test.chr test-packed.bin\n\n"
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"offset can be in either decimal or hex.\n",
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argv[0], argv[0], argv[0], argv[0]);
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exit(-1);
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}
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FILE *infile, *outfile;
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int fileoffset;
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int newfile = 0;
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int fast = 0;
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for (int i = 1; i < argc; i++) {
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if (!strcmp(argv[i], "-n"))
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newfile = 1;
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else if (!strcmp(argv[i], "-fast"))
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fast = 1;
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}
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if (fast)
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printf("Fast compression enabled.\n");
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// check for -n switch
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if (newfile) {
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fileoffset = 0;
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infile = fopen(argv[argc - 2], "rb");
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outfile = fopen(argv[argc - 1], "wb");
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} else {
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fileoffset = strtol(argv[argc - 1], NULL, 0);
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infile = fopen(argv[argc - 3], "rb");
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outfile = fopen(argv[argc - 2], "r+b");
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}
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if (!infile) {
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fprintf(stderr, "Error: unable to open input file\n");
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exit(-1);
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}
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if (!outfile) {
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fprintf(stderr, "Error: unable to open output file\n");
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exit(-1);
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}
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size_t inputsize, outputsize;
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uint8_t unpacked[DATA_SIZE];
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uint8_t packed[DATA_SIZE] = {0};
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// check size of input file
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fseek(infile, 0, SEEK_END);
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inputsize = ftell(infile);
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printf("Uncompressed size: %zd bytes\n", inputsize);
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if (inputsize > DATA_SIZE) {
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fprintf(stderr, "Error: File must be a maximum of 65,536 bytes!\n");
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exit(-1);
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} else if (!inputsize) {
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fprintf(stderr, "Error: Input file is empty!\n");
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exit(-1);
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}
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// read the file
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fseek(infile, 0, SEEK_SET);
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fread(unpacked, sizeof(uint8_t), inputsize, infile);
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if (ferror(infile)) {
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perror("Error reading input file");
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exit(-1);
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}
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// compress the file
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clock_t time = clock();
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outputsize = pack(unpacked, inputsize, packed, fast);
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time = clock() - time;
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if (outputsize) {
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// write the compressed data to the file
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fseek(outfile, fileoffset, SEEK_SET);
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fwrite((const void*)packed, 1, outputsize, outfile);
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if (ferror(outfile)) {
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perror("Error writing output file");
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exit(-1);
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}
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printf("Compressed size: % zu bytes\n", outputsize);
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printf("Compression ratio: %4.2f%%\n", 100 * (double)outputsize / inputsize);
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printf("Compression time: %4.3f seconds\n\n", (double)time / CLOCKS_PER_SEC);
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printf("Inserted at 0x%06X - 0x%06lX\n", fileoffset, ftell(outfile) - 1);
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} else {
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fprintf(stderr, "Error: File could not be compressed because the resulting compressed data would\n"
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" have been larger than 64 kb.\n");
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}
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fclose(infile);
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fclose(outfile);
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}
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