From 2142b6b2c0a52093f8d9559fac38dc36cbd3d99d Mon Sep 17 00:00:00 2001
From: Pixel <Pixel>
Date: Sun, 19 May 2002 18:58:58 +0000
Subject: Habitual commit...

---
 FAQ.psx  |  1 +
 lz77.cpp | 31 +++++++++++++++++++++++++------
 lz77.h   |  1 +
 3 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/FAQ.psx b/FAQ.psx
index a16fbb2..6bb7fe8 100644
--- a/FAQ.psx
+++ b/FAQ.psx
@@ -16,3 +16,4 @@ A: http://www.psxdev.ip3.com/
    http://phatt.hn.org/nitrous/psxutils.htm
    http://www.geocities.com/SiliconValley/Pines/6131/psxprog.html
    http://home.hiwaay.net/~jfrohwei/home.html
+   http://www.flyonthenet.it/net/psx_faq.htm
diff --git a/lz77.cpp b/lz77.cpp
index 4648964..8497868 100644
--- a/lz77.cpp
+++ b/lz77.cpp
@@ -29,6 +29,7 @@
 int lz77_maxsize = 18;
 int lz77_maxptr = 0x0fff;
 int tolerate = 1;
+int blockb = 0;
 
 scheme_t schemes[] = {
 /*    Nom            1  I  J  O  N 16 Op  F   Lm1 Ls1   Lm2 Ls2   Jm1 Js1   Jm2 Js2   Fm1 Fs1   Fm2 Fs2   Vm1 Vs1   Vm2 Vs2 */
@@ -36,6 +37,7 @@ scheme_t schemes[] = {
     {"DBZ RPG",      0, 0, 0, 0, 0, 0, 0, 0, 0x0f,  0, 0x00,  0, 0xf0, -4, 0xff,  4, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
     {"FF7",          0, 0, 0, 0, 0, 0, 0, 0, 0x00,  0, 0x0f,  0, 0xff,  0, 0xf0,  4, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
     {"Leen Mean",    1, 1, 1, 1, 0, 0, 0, 0, 0x0f,  0, 0x00,  0, 0xf0,  4, 0xff,  0, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
+    {"Metal Max",    0, 0, 0, 0, 0, 0, 0, 0, 0x00,  0, 0x0f,  0, 0xff,  0, 0xf0,  4, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
     {"Ogre Battle",  0, 0, 0, 1, 0, 0, 1, 0, 0xf8, -3, 0x00,  0, 0x07,  8, 0xff,  0, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
     {"Lodoss Wars",  0, 0, 0, 0, 0, 0, 0, 0, 0x00,  0, 0x7f,  0, 0xff,  0, 0x80,  1, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
     {"FF6 PSX",      0, 0, 0, 1, 1, 1, 0, 0, 0x1f,  1, 0x00,  0, 0xe0, -4, 0xff,  4, 0x00,  0, 0x00,  0, 0x00,  0, 0x00,  0},
@@ -177,8 +179,11 @@ unsigned long lz77_decomp(FILE * f_source, FILE * f_cible, long true_length)
 		    for (decomp_count = 0; decomp_count < decomp_fill; decomp_count++) {
 			fwrite(&valeur, 1, 1, f_cible);
 			text_buf[r++] = valeur;
-			whole_count++;
+			if (!blockb)
+			    whole_count++;
 		    }
+		    if (blockb)
+			whole_count++;
 		} else {
 		    if (scheme.opposite) {
 			decomp_offset = r - lz77_maxptr - 1 + decomp_jump;
@@ -196,11 +201,12 @@ unsigned long lz77_decomp(FILE * f_source, FILE * f_cible, long true_length)
 		    }
 		    printm(M_INFO, "    Found a needle of %li bytes at %li = 0x%04x, jump of %li = 0x%04x (val1 = 0x%02x, val2 = 0x%02x)\n", decomp_length, decomp_offset, decomp_offset, decomp_jump, decomp_jump, val1, val2);
 		    for (decomp_count = decomp_offset; decomp_count < loop_length; decomp_count++) {
+			if (!blockb)
+			    whole_count++;
 			if (decomp_count < 0) {
 			    valeur = 0;
 			    fwrite(&valeur, 1, 1, f_cible);
 			    text_buf[r++] = 0;
-			    whole_count++;
 			    if (!negative_error) {
 				if (!tolerate) {
 				    free(text_buf);
@@ -214,11 +220,12 @@ unsigned long lz77_decomp(FILE * f_source, FILE * f_cible, long true_length)
 			    fwrite(&text_buf[decomp_count], 1, 1, f_cible);
 		    	    printm(M_INFO, "@0x%04x: 0x%02x\n", decomp_count, text_buf[decomp_count]);
 			    text_buf[r++] = text_buf[decomp_count];
-			    whole_count++;
 			}
 			if (whole_count >= length)
-                   break;
+                    	    break;
 		    }
+		    if (blockb)
+			whole_count++;
 		}
 	    }
 	    bitmap >>= 1;
@@ -278,9 +285,11 @@ long lz77_comp_strstr(unsigned char * needle, unsigned char * r, long * l, long
     return ptr;
 }
 
+long blk, bitmap_count;
+
 unsigned char * lz77_memcomp(unsigned char * r, long * l, long * delta) {
-    unsigned char bitmap, * comp, bitmap_count;
-    long ptr, needle, needle_length, comp_ptr, bitmap_ptr, blk = 0, val1, val2;
+    unsigned char bitmap, * comp;
+    long ptr, needle, needle_length, comp_ptr, bitmap_ptr, val1, val2;
     long jump, farest, remaining;
     int j;
     
@@ -289,6 +298,7 @@ unsigned char * lz77_memcomp(unsigned char * r, long * l, long * delta) {
     compute_limits();
     
     ptr = 0;
+    blk = 0;
     bitmap_count = 0;
     comp_ptr = 1 + scheme.sixteen_bits;
     bitmap = 0;
@@ -451,6 +461,7 @@ struct option long_options[] = {
     {"dump",       0, NULL, 'D'},
     {"compress",   0, NULL, 'c'},
     {"decompress", 0, NULL, 'd'},
+    {"blocks",     0, NULL, 'b'},
     {0,            0, NULL,  0 }
 };
 
@@ -469,6 +480,7 @@ void showhelp(void) {
 "                                or enable the padding behavior for compression.\n"
 "-S           --show             Show the actual scheme before processing.\n"
 "-v           --verbose          Display a *LOT* of informations.\n"
+"-b           --blocks           Switch to blocks decompression behaviour\n"
 "\n"
 "Additionnaly you have the scheme manipulation options:\n"
 "--1iscomp --overlap --negative --16bits --filling --inverse --onejump\n"
@@ -700,6 +712,9 @@ LZ77_NAME " compressor/decompressor version " LZ77_VERSION ",\n"
 	case 'c':
 	    compress = 1;
 	    break;
+	case 'b':
+	    blockb = 1;
+	    break;
 	default:
 	    showhelp();
 	    printm(M_ERROR, "Unknow option.\n");
@@ -747,6 +762,10 @@ LZ77_NAME " compressor/decompressor version " LZ77_VERSION ",\n"
     }
     
     printm(M_STATUS, "Done, filesize changed from %i to %i.\n", filesize(f1), filesize(f2));
+    if (!bitmap_count)
+	bitmap_count = 8;
+    if (compress)
+        printm(M_STATUS, "Compressed %i = 0x%08x blocs, containing %i = 0x%08x chunks.\n", blk + 1, blk + 1, blk + bitmap_count, blk + bitmap_count);
     
     fclose(f1);
     fclose(f2);
diff --git a/lz77.h b/lz77.h
index 4158cd4..418578e 100644
--- a/lz77.h
+++ b/lz77.h
@@ -40,6 +40,7 @@ enum {
     DBZ,
     FF7,
     LM,
+    MM,
     OB,
     LODOSS,
     FF6,
-- 
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