From 1bdee2153953e23bf71f7a5e83145bb4d67db567 Mon Sep 17 00:00:00 2001
From: johannes <johannes.herman@gmail.com>
Date: Wed, 31 Jan 2024 10:01:01 +0100
Subject: initial init, huffman and demoheader

---
 inc/demo.h    | 34 ++++++++++++++++++++++++++++++++++
 inc/huffman.h | 16 ++++++++++++++++
 2 files changed, 50 insertions(+)
 create mode 100644 inc/demo.h
 create mode 100644 inc/huffman.h

(limited to 'inc')

diff --git a/inc/demo.h b/inc/demo.h
new file mode 100644
index 0000000..154a333
--- /dev/null
+++ b/inc/demo.h
@@ -0,0 +1,34 @@
+#ifndef DEMO_H
+#define DEMO_H
+
+#include <stdio.h>
+
+/* demoheader struct */
+typedef struct
+{
+    unsigned char version;
+    char netversion[64];
+    char mapname[64];
+    unsigned char mapsize[4];   // Big endian int
+    unsigned char mapcrc[4];    // Big endian int
+    char type[8];
+    unsigned char length[4];    // Big endian int
+    char timestamp[20];
+} demoheader;
+
+/* demotimeline struct, only contains the raw data */
+typedef struct
+{
+    char data[260];
+} demotimeline;
+
+/* Read demo header from demofile into given demoheader */
+/* Returns a positive number on success, negative on fail */
+int readdemoheader(FILE *demofile, demoheader *demoheader);
+
+/* Read demo timeline from demofile into given demoheader */
+/* Returns a positive number on success, negative on fail */
+/* Must have read the header from demofile beforehand */
+int readdemotimeline(FILE *demofile, demotimeline *demotimeline);
+
+#endif // DEMO_H
\ No newline at end of file
diff --git a/inc/huffman.h b/inc/huffman.h
new file mode 100644
index 0000000..1ac7ff6
--- /dev/null
+++ b/inc/huffman.h
@@ -0,0 +1,16 @@
+#ifndef HUFFMAN_H
+#define HUFFMAN_H
+
+/* Initialize huffman */
+/* Uses the standard frequency table if NULL is provided */
+void inithuff(const unsigned int *frequencies);
+
+/* Compress contents of input buffer, result in output buffer */
+/* Returns -1 on too small output buffer */
+int compresshuff(const char *inputbuff, int inputsize, char *outputbuff, int outputsize);
+
+/* Decompress contents of input buffer, result in output buffer */
+/* Returns -1 on decompress error */
+int decompresshuff(const char *inputbuff, int inputsize, char *outputbuff, int outputsize);
+
+#endif // HUFFMAN_H
-- 
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