#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include "sleep.h"
-#include "proxmark3.h"
-#include "flash.h"
-#include "uart.h"
-#include "usb_cmd.h"
+#include <stdint.h>
+#include "zlib.h"
#define MAX(a,b) ((a)>(b)?(a):(b))
-struct huffman_record {
- int16_t symbol;
- uint16_t count;
- uint8_t code_size;
- uint8_t code;
- struct huffman_record *left;
- struct huffman_record *right;
- struct huffman_record *next;
- };
-
-typedef struct huffman_record huffman_record_t;
+// zlib configuration
+#define COMPRESS_LEVEL 9 // use best possible compression
#define FPGA_CONFIG_SIZE 42175
static uint8_t fpga_config[FPGA_CONFIG_SIZE];
-static huffman_record_t leaf_nodes[256];
-static uint8_t start_code[256];
static void usage(char *argv0)
{
- fprintf(stderr, "Usage: %s [-d] <infile> <outfile>\n\n", argv0);
- fprintf(stderr, "\t-d\tdecompress\n\n");
+ fprintf(stderr, "Usage: %s <infile> <outfile>\n\n", argv0);
}
-void add_to_heap(huffman_record_t **heap, huffman_record_t *new_record)
+static voidpf fpga_deflate_malloc(voidpf opaque, uInt items, uInt size)
{
- huffman_record_t *succ = *heap;
- huffman_record_t *pred = NULL;
-
-// fprintf(stderr, "Adding symbol %d, count %d\n", new_record->symbol, new_record->count);
-
- while (succ != NULL && new_record->count > succ->count) {
- pred = succ;
- succ = succ->next;
- }
-
- // insert new record
- new_record->next = succ;
- if (pred == NULL) { // first record in heap
- *heap = new_record;
- } else {
- pred->next = new_record;
- }
+ fprintf(stderr, "zlib requested %d bytes\n", items*size);
+ return malloc(items*size);
}
-
-uint16_t set_codesize(huffman_record_t *tree_ptr, uint8_t depth)
+
+static void fpga_deflate_free(voidpf opaque, voidpf address)
{
- uint16_t max_size = depth;
- tree_ptr->code_size = depth;
- if (tree_ptr->left != NULL) {
- max_size = MAX(set_codesize(tree_ptr->left, depth+1), max_size);
- }
- if (tree_ptr->right != NULL) {
- max_size = MAX(set_codesize(tree_ptr->right, depth+1), max_size);
- }
- return max_size;
-}
+ fprintf(stderr, "zlib frees memory\n");
+ return free(address);
+}
-int huffman_encode(FILE *infile, FILE *outfile)
+
+int zlib_compress(FILE *infile, FILE *outfile)
{
- int i;
-
- // init leaf_nodes:
- for (i = 0; i < 256; i++) {
- leaf_nodes[i].count = 0;
- leaf_nodes[i].symbol = i;
- leaf_nodes[i].left = NULL;
- leaf_nodes[i].right = NULL;
- leaf_nodes[i].next = NULL;
- }
+ int i, ret;
+ z_stream compressed_fpga_stream;
// read the input file into fpga_config[] and count occurrences of each symbol:
i = 0;
uint8_t c;
c = fgetc(infile);
fpga_config[i++] = c;
- leaf_nodes[c].count++;
if (i > FPGA_CONFIG_SIZE+1) {
fprintf(stderr, "Input file too big (> %d bytes). This is probably not a PM3 FPGA config file.", FPGA_CONFIG_SIZE);
fclose(infile);
return -1;
}
}
-
- fprintf(stderr, "\nStatistics: (symbol: count)\n");
- for (i = 0; i < 256; i++) {
- fprintf(stderr, "%3d: %5d\n", i, leaf_nodes[i].count);
- }
-
- // build the Huffman tree:
- huffman_record_t *heap_ptr = NULL;
- for (i = 0; i < 256; i++) {
- add_to_heap(&heap_ptr, &leaf_nodes[i]);
- }
-
- fprintf(stderr, "\nSorted statistics: (symbol: count)\n");
- for (huffman_record_t *p = heap_ptr; p != NULL; p = p->next) {
- fprintf(stderr, "%3d: %5d\n", p->symbol, p->count);
- }
-
- for (i = 0; i < 255; i++) {
- // remove and combine the first two nodes
- huffman_record_t *p1, *p2;
- p1 = heap_ptr;
- p2 = heap_ptr->next;
- heap_ptr = p2->next;
- huffman_record_t *new_node = malloc(sizeof(huffman_record_t));
- new_node->left = p1;
- new_node->right = p2;
- new_node->count = p1->count + p2->count;
- add_to_heap(&heap_ptr, new_node);
- }
+ // initialize zlib structures
+ compressed_fpga_stream.next_in = fpga_config;
+ compressed_fpga_stream.avail_in = i;
+ compressed_fpga_stream.zalloc = fpga_deflate_malloc;
+ compressed_fpga_stream.zfree = fpga_deflate_free;
- uint16_t max_codesize = set_codesize(heap_ptr, 0);
-
- fprintf(stderr, "\nStatistics: (symbol: count, codesize)\n");
- uint32_t compressed_size = 0;
- for (i = 0; i < 256; i++) {
- fprintf(stderr, "%3d: %5d, %d\n", leaf_nodes[i].symbol, leaf_nodes[i].count, leaf_nodes[i].code_size);
- compressed_size += leaf_nodes[i].count * leaf_nodes[i].code_size;
- }
- fprintf(stderr, "Compressed size = %ld (%f% of original size)", (compressed_size+7)/8, (float)(compressed_size)/(FPGA_CONFIG_SIZE * 8) * 100);
- fprintf(stderr, "Max Codesize = %d bits", max_codesize);
+ // estimate the size of the compressed output
+ unsigned int outsize_max = deflateBound(&compressed_fpga_stream, compressed_fpga_stream.avail_in);
+ uint8_t *outbuf = malloc(outsize_max);
+ compressed_fpga_stream.next_out = outbuf;
+ compressed_fpga_stream.avail_out = outsize_max;
+ fprintf(stderr, "Allocated %d bytes for output file (estimated upper bound)\n", outsize_max);
- uint8_t code = 0;
- for (i = max_codesize; i > 0; i--) {
- code = (code + 1) >> 1;
- start_code[i] = code;
- for (uint16_t j = 0; j < 256; j++) {
- if (leaf_nodes[j].code_size == i) {
- leaf_nodes[j].code = code;
- code++;
- }
- }
+ ret = deflateInit(&compressed_fpga_stream, COMPRESS_LEVEL);
+
+ if (ret == Z_OK) {
+ ret = deflate(&compressed_fpga_stream, Z_FINISH);
}
-
- fprintf(stderr, "\nStatistics: (symbol: count, codesize, code)\n");
- for (i = 0; i < 256; i++) {
- fprintf(stderr, "%3d: %5d, %d, %02x\n", leaf_nodes[i].symbol, leaf_nodes[i].count, leaf_nodes[i].code_size, leaf_nodes[i].code);
- }
+ fprintf(stderr, "produced %d bytes of output\n", compressed_fpga_stream.total_out);
+
+ if (ret != Z_STREAM_END) {
+ fprintf(stderr, "Error in deflate(): %d %s\n", ret, compressed_fpga_stream.msg);
+ free(outbuf);
+ deflateEnd(&compressed_fpga_stream);
+ fclose(infile);
+ fclose(outfile);
+ return -1;
+ }
+ for (i = 0; i < compressed_fpga_stream.total_out; i++) {
+ fputc(outbuf[i], outfile);
+ }
+
+ free(outbuf);
+ deflateEnd(&compressed_fpga_stream);
fclose(infile);
fclose(outfile);
-
- return 0;
-}
-int huffman_decode(FILE *infile, FILE *outfile)
-{
return 0;
+
}
+
int main(int argc, char **argv)
{
- bool decode = false;
char *infilename;
char *outfilename;
- if (argc < 3) {
+ if (argc != 3) {
usage(argv[0]);
return -1;
- }
-
- if (argc > 3) {
- if (!strcmp(argv[1], "-d")) {
- decode = true;
- infilename = argv[2];
- outfilename = argv[3];
- } else {
- usage(argv[0]);
- return -1;
- }
} else {
infilename = argv[1];
outfilename = argv[2];
return -1;
}
- if (decode) {
- return huffman_decode(infile, outfile);
- } else {
- return huffman_encode(infile, outfile);
- }
+ return zlib_compress(infile, outfile);
}
projects / proxmark3-svn / blobdiff