+++ /dev/null
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-
-#include "ldm.h"
-
-#define BUF_SIZE 16*1024 // Block size
-#define LDM_HEADER_SIZE 8
-
-/*
-static size_t compress_file_mmap(FILE *in, FILE *out, size_t *size_in,
- size_t *size_out) {
- char *src, *dst;
- struct stat statbuf;
-
- if (fstat(in, &statbuf) < 0) {
- printf("fstat error\n");
- return 1;
- }
-
-
- return 0;
-}
-*/
-
-static size_t compress_file(FILE *in, FILE *out, size_t *size_in,
- size_t *size_out) {
- char *src, *buf = NULL;
- size_t r = 1;
- size_t size, n, k, count_in = 0, count_out = 0, offset, frame_size = 0;
-
- src = malloc(BUF_SIZE);
- if (!src) {
- printf("Not enough memory\n");
- goto cleanup;
- }
-
- size = BUF_SIZE + LDM_HEADER_SIZE;
- buf = malloc(size);
- if (!buf) {
- printf("Not enough memory\n");
- goto cleanup;
- }
-
- for (;;) {
- k = fread(src, 1, BUF_SIZE, in);
- if (k == 0)
- break;
- count_in += k;
-
- n = LDM_compress(src, buf, k, BUF_SIZE);
-
- // n = k;
- // offset += n;
- offset = n;
- count_out += n;
-
- k = fwrite(buf, 1, offset, out);
- if (k < offset) {
- if (ferror(out))
- printf("Write failed\n");
- else
- printf("Short write\n");
- goto cleanup;
- }
-
- }
- *size_in = count_in;
- *size_out = count_out;
- r = 0;
- cleanup:
- free(src);
- free(buf);
- return r;
-}
-
-static size_t decompress_file(FILE *in, FILE *out) {
- void *src = malloc(BUF_SIZE);
- void *dst = NULL;
- size_t dst_capacity = BUF_SIZE;
- size_t ret = 1;
- size_t bytes_written = 0;
-
- if (!src) {
- perror("decompress_file(src)");
- goto cleanup;
- }
-
- while (ret != 0) {
- /* Load more input */
- size_t src_size = fread(src, 1, BUF_SIZE, in);
- void *src_ptr = src;
- void *src_end = src_ptr + src_size;
- if (src_size == 0 || ferror(in)) {
- printf("(TODO): Decompress: not enough input or error reading file\n");
- //TODO
- ret = 0;
- goto cleanup;
- }
-
- /* Allocate destination buffer if it hasn't been allocated already */
- if (!dst) {
- dst = malloc(dst_capacity);
- if (!dst) {
- perror("decompress_file(dst)");
- goto cleanup;
- }
- }
-
- /* Decompress:
- * Continue while there is more input to read.
- */
- while (src_ptr != src_end && ret != 0) {
- // size_t dst_size = src_size;
- size_t dst_size = LDM_decompress(src, dst, src_size, dst_capacity);
- size_t written = fwrite(dst, 1, dst_size, out);
-// printf("Writing %zu bytes\n", dst_size);
- bytes_written += dst_size;
- if (written != dst_size) {
- printf("Decompress: Failed to write to file\n");
- goto cleanup;
- }
- src_ptr += src_size;
- src_size = src_end - src_ptr;
- }
-
- /* Update input */
-
- }
-
- printf("Wrote %zu bytes\n", bytes_written);
-
- cleanup:
- free(src);
- free(dst);
-
- return ret;
-}
-
-static int compare(FILE *fp0, FILE *fp1) {
- int result = 0;
- while (result == 0) {
- char b0[1024];
- char b1[1024];
- const size_t r0 = fread(b0, 1, sizeof(b0), fp0);
- const size_t r1 = fread(b1, 1, sizeof(b1), fp1);
-
- result = (int)r0 - (int)r1;
-
- if (0 == r0 || 0 == r1) {
- break;
- }
- if (0 == result) {
- result = memcmp(b0, b1, r0);
- }
- }
- return result;
-}
-
-int main(int argc, char *argv[]) {
- char inpFilename[256] = { 0 };
- char ldmFilename[256] = { 0 };
- char decFilename[256] = { 0 };
-
- if (argc < 2) {
- printf("Please specify input filename\n");
- return 0;
- }
- snprintf(inpFilename, 256, "%s", argv[1]);
- snprintf(ldmFilename, 256, "%s.ldm", argv[1]);
- snprintf(decFilename, 256, "%s.ldm.dec", argv[1]);
-
- printf("inp = [%s]\n", inpFilename);
- printf("ldm = [%s]\n", ldmFilename);
- printf("dec = [%s]\n", decFilename);
-
- /* compress */
- {
- FILE *inpFp = fopen(inpFilename, "rb");
- FILE *outFp = fopen(ldmFilename, "wb");
- size_t sizeIn = 0;
- size_t sizeOut = 0;
- size_t ret;
- printf("compress : %s -> %s\n", inpFilename, ldmFilename);
- ret = compress_file(inpFp, outFp, &sizeIn, &sizeOut);
- if (ret) {
- printf("compress : failed with code %zu\n", ret);
- return ret;
- }
- printf("%s: %zu → %zu bytes, %.1f%%\n",
- inpFilename, sizeIn, sizeOut,
- (double)sizeOut / sizeIn * 100);
- printf("compress : done\n");
-
- fclose(outFp);
- fclose(inpFp);
- }
-
- /* decompress */
- {
- FILE *inpFp = fopen(ldmFilename, "rb");
- FILE *outFp = fopen(decFilename, "wb");
- size_t ret;
-
- printf("decompress : %s -> %s\n", ldmFilename, decFilename);
- ret = decompress_file(inpFp, outFp);
- if (ret) {
- printf("decompress : failed with code %zu\n", ret);
- return ret;
- }
- printf("decompress : done\n");
-
- fclose(outFp);
- fclose(inpFp);
- }
-
- /* verify */
- {
- FILE *inpFp = fopen(inpFilename, "rb");
- FILE *decFp = fopen(decFilename, "rb");
-
- printf("verify : %s <-> %s\n", inpFilename, decFilename);
- const int cmp = compare(inpFp, decFp);
- if(0 == cmp) {
- printf("verify : OK\n");
- } else {
- printf("verify : NG\n");
- }
-
- fclose(decFp);
- fclose(inpFp);
- }
-
- return 0;
-}
-
-