lzms-compress.c: Don't underrun window when checking recent offsets

[wimlib] / include / wimlib / lzx.h

diff --git a/include/wimlib/lzx.h b/include/wimlib/lzx.h
index 715ec16bfefa62fef98ca43c07bd1964f7856c5c..50d80f620de6333510004947cefc2c42eb77c9a7 100644 (file)
--- a/include/wimlib/lzx.h
+++ b/include/wimlib/lzx.h
@@ -95,7 +95,7 @@
 extern const u8 lzx_extra_bits[LZX_MAX_POSITION_SLOTS];
 #endif
 
-/* Given the number of a LZX position slot, return the number of extra bits that
+/* Given the number of an LZX position slot, return the number of extra bits that
  * are needed to encode the match offset. */
 static inline unsigned
 lzx_get_num_extra_bits(unsigned position_slot)
@@ -122,7 +122,7 @@ extern const u32 lzx_position_base[LZX_MAX_POSITION_SLOTS];
  * the formatted offset without actually looking at the array.
  */
 static inline unsigned
-lzx_get_position_slot_raw(unsigned formatted_offset)
+lzx_get_position_slot_raw(u32 formatted_offset)
 {
        if (formatted_offset >= 196608) {
                return (formatted_offset >> 17) + 34;
@@ -157,4 +157,10 @@ lzx_lru_queue_init(struct lzx_lru_queue *queue)
                queue->R[i] = 1;
 }
 
+extern void
+lzx_do_e8_preprocessing(u8 *data, s32 size);
+
+extern void
+lzx_undo_e8_preprocessing(u8 *data, s32 size);
+
 #endif /* _WIMLIB_LZX_H */