1 files changed, 52 insertions, 0 deletions
diff --git a/Imaging/libImaging/Lzw.h b/Imaging/libImaging/Lzw.h
new file mode 100644
index 0000000..3e6faa2
--- /dev/null
+++ b/Imaging/libImaging/Lzw.h
@@ -0,0 +1,52 @@
+/*
+ * The Python Imaging Library.
+ * $Id: Lzw.h 2134 2004-10-06 08:55:20Z fredrik $
+ *
+ * declarations for the TIFF LZW decoder.
+ *
+ * Copyright (c) Fredrik Lundh 1995-96.
+ */
+
+
+/* Max size for LZW code words */
+
+#define	LZWBITS	    12
+
+#define	LZWTABLE    (1<<LZWBITS)
+#define	LZWBUFFER   (1<<LZWBITS)
+
+
+typedef struct {
+
+    /* CONFIGURATION */
+
+    /* Filter type */
+    int filter;
+
+    /* PRIVATE CONTEXT (set by decoder) */
+
+    /* Input bit buffer */
+    INT32 bitbuffer;
+    int bitcount;
+
+    /* Code buffer */
+    int codesize;
+    int codemask;
+
+    /* Constant symbol codes */
+    int clear, end;
+
+    /* Symbol history */
+    int lastcode;
+    unsigned char lastdata;
+
+    /* History buffer */
+    int bufferindex;
+    unsigned char buffer[LZWTABLE];
+
+    /* Symbol table */
+    unsigned INT16 link[LZWTABLE];
+    unsigned char data[LZWTABLE];
+    int next;
+
+} LZWSTATE;