add files

Author: z64me

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+
+# Matches multiple files with brace expansion notation
+[*.{c,h,ch}]
+charset = utf-8
+indent_style = tab
+indent_size = 3
+trim_trailing_whitespace = false
+
+[*.md]
+trim_trailing_whitespace = false

.gitignore

@@ -0,0 +1,4 @@
+bin/
+o/
+test/
+z64decompress

LICENSE

@@ -0,0 +1,8 @@
+# build decoder functions
+gcc -Og -g -lm -c -Wall -Wextra src/decoder/*.c
+mkdir -p o
+mv *.o o
+
+# build everything else
+gcc -o z64decompress src/*.c o/*.o -Wall -Wextra -Og -g
+

debug-linux.sh

@@ -0,0 +1,14 @@
+# build decoder functions
+gcc -DNDEBUG -s -Ofast -flto -lm -c -Wall -Wextra src/decoder/*.c
+mkdir -p o
+mv *.o o
+
+# build everything else
+gcc -o z64decompress -DNDEBUG src/*.c o/*.o -Wall -Wextra -s -Os -flto
+
+# move to bin directory
+mkdir -p bin/linux64
+mv z64decompress bin/linux64
+
+
+

release-linux.sh

@@ -0,0 +1,14 @@
+# build decoder functions
+gcc -m32 -DNDEBUG -s -Ofast -flto -lm -c -Wall src/decoder/*.c
+mkdir -p o
+mv *.o o
+
+# build everything else
+gcc -m32 -o z64decompress -DNDEBUG src/*.c o/*.o -Wall -Wextra -s -Os -flto
+
+# move to bin directory
+mkdir -p bin/linux32
+mv z64decompress bin/linux32
+
+
+

release-linux32.sh

@@ -0,0 +1,12 @@
+# build decoder functions
+~/c/mxe/usr/bin/i686-w64-mingw32.static-gcc -DNDEBUG -s -Ofast -flto -lm -c -Wall src/decoder/*.c
+mkdir -p o
+mv *.o o
+
+# build everything else
+~/c/mxe/usr/bin/i686-w64-mingw32.static-gcc -o z64decompress.exe -DNDEBUG src/*.c o/*.o -Wall -Wextra -s -Os -flto -mconsole -municode
+
+# move to bin directory
+mkdir -p bin/win32
+mv z64decompress.exe bin/win32
+

release-win32.sh

@@ -0,0 +1,4 @@
+these decoder functions were adapted from those in my z64enc repo
+
+https://github.com/z64me/z64enc
+

src/decoder/README

@@ -0,0 +1,229 @@
+/* <z64.me> adapted from aPLib's depack.c */
+
+/*
+ * aPLib compression library  -  the smaller the better :)
+ *
+ * C depacker
+ *
+ * Copyright (c) 1998-2014 Joergen Ibsen
+ * All Rights Reserved
+ *
+ * http://www.ibsensoftware.com/
+ */
+
+#include "private.h"
+
+struct decoder
+{
+	unsigned char   buf[1024];   /* intermediate buffer for loading  */
+	unsigned char  *buf_end;     /* pointer that exists for the sole *
+	                              * purpose of getting size of `buf` */
+	unsigned char  *pstart;      /* offset of next read from rom     */
+	unsigned int    remaining;   /* remaining size of file           */
+	unsigned char  *buf_limit;   /* points to end of scannable area  *
+	                              * of buf; this prevents yaz parser *
+	                              * from overflowing                 */
+#if MAJORA
+	unsigned char  *dst_end;     /* end of decompressed block        */
+#endif
+};
+
+/* internal data structure */
+struct APDSTATE {
+	unsigned char *source;
+	unsigned char *destination;
+	unsigned int tag;
+	unsigned int bitcount;
+};
+
+static struct decoder dec;
+
+static void *refill(unsigned char *ip)
+{
+	unsigned offset;
+	unsigned size;
+	
+	/* intermediate buffer is not yet due for a refill */
+	if (ip < dec.buf_end - 8)
+		return ip;
+	
+	/* the number 8 is used throughout to ensure *
+	 * dma transfers are always 8 byte aligned   */
+	offset = dec.buf_end - ip;
+	size = sizeof(dec.buf) - 8;
+	
+	/* the last eight bytes wrap around */
+	Bcopy(dec.buf_end - 8, dec.buf, 8);
+	
+	/* transfer data from rom */
+	DMARomToRam(dec.pstart, dec.buf + 8, size);
+	dec.pstart += size;
+	
+	return dec.buf + (8 - offset);
+}
+
+static unsigned int aP_getbit(struct APDSTATE *ud)
+{
+	unsigned int bit;
+
+	/* check if tag is empty */
+	if (!ud->bitcount--) {
+		/* load next tag */
+		ud->tag = *ud->source++;
+		ud->bitcount = 7;
+	}
+
+	/* shift bit out of tag */
+	bit = (ud->tag >> 7) & 0x01;
+	ud->tag <<= 1;
+
+	return bit;
+}
+
+static unsigned int aP_getgamma(struct APDSTATE *ud)
+{
+	unsigned int result = 1;
+
+	/* input gamma2-encoded bits */
+	do {
+		result = (result << 1) + aP_getbit(ud);
+	} while (aP_getbit(ud));
+
+	return result;
+}
+
+static inline void *aP_depack(void *source, unsigned char *destination)
+{
+	struct APDSTATE ud;
+	unsigned int offs, len, R0, LWM;
+	int done;
+	int i;
+
+	ud.source = source;
+	ud.bitcount = 0;
+
+	R0 = (unsigned int) -1;
+	LWM = 0;
+	done = 0;
+	
+	/* initial buffer fill */
+	ud.source = refill(ud.source);
+	
+	/* skip header */
+	ud.source += 8;
+
+	/* first byte verbatim */
+	*destination++ = *ud.source++;
+
+	/* main decompression loop */
+	while (!done) {
+		ud.source = refill(ud.source);
+		if (aP_getbit(&ud)) {
+			if (aP_getbit(&ud)) {
+				if (aP_getbit(&ud)) {
+					offs = 0;
+
+					for (i = 4; i; i--) {
+						offs = (offs << 1) + aP_getbit(&ud);
+					}
+
+					if (offs) {
+						*destination = *(destination - offs);
+						destination++;
+					}
+					else {
+						*destination++ = 0x00;
+					}
+
+					LWM = 0;
+				}
+				else {
+					offs = *ud.source++;
+
+					len = 2 + (offs & 0x0001);
+
+					offs >>= 1;
+
+					if (offs) {
+						for (; len; len--) {
+							*destination = *(destination - offs);
+							destination++;
+						}
+					}
+					else {
+						done = 1;
+					}
+
+					R0 = offs;
+					LWM = 1;
+				}
+			}
+			else {
+				offs = aP_getgamma(&ud);
+
+				if ((LWM == 0) && (offs == 2)) {
+					offs = R0;
+
+					len = aP_getgamma(&ud);
+
+					for (; len; len--) {
+						*destination = *(destination - offs);
+						destination++;
+					}
+				}
+				else {
+					if (LWM == 0) {
+						offs -= 3;
+					}
+					else {
+						offs -= 2;
+					}
+
+					offs <<= 8;
+					offs += *ud.source++;
+
+					len = aP_getgamma(&ud);
+
+					if (offs >= 32000) {
+						len++;
+					}
+					if (offs >= 1280) {
+						len++;
+					}
+					if (offs < 128) {
+						len += 2;
+					}
+
+					for (; len; len--) {
+						*destination = *(destination - offs);
+						destination++;
+					}
+
+					R0 = offs;
+				}
+
+				LWM = 1;
+			}
+		}
+		else {
+			*destination++ = *ud.source++;
+			LWM = 0;
+		}
+	}
+	
+	return destination;
+}
+
+/* main driver */
+void apldec(void *src, void *dst, unsigned sz)
+{
+	dec.pstart = src;
+	dec.buf_end = dec.buf + sizeof(dec.buf);
+	dst = aP_depack(dec.buf_end, dst);
+	(void)sz; /* unused parameter */
+#if MAJORA
+	dec.dst_end = dst;
+	dec.buf_end = 0;
+#endif
+}
+

src/decoder/aplib.c

@@ -0,0 +1,10 @@
+#ifndef Z64DECOMPRESS_DECODER_H_INCLUDED
+#define Z64DECOMPRESS_DECODER_H_INCLUDED
+
+void yazdec(void *src, void *dst, unsigned sz);
+void lzodec(void *src, void *dst, unsigned sz);
+void ucldec(void *src, void *dst, unsigned sz);
+void apldec(void *src, void *dst, unsigned sz);
+
+#endif /* Z64DECOMPRESS_DECODER_H_INCLUDED */
+