lib/lzo: implement run-length encoding

[linux-2.6-microblaze.git] / lib / lzo / lzodefs.h

diff --git a/lib/lzo/lzodefs.h b/lib/lzo/lzodefs.h
index fa0a45f..ac64159 100644 (file)
--- a/lib/lzo/lzodefs.h
+++ b/lib/lzo/lzodefs.h
@@ -13,6 +13,12 @@
  */
 
 
+/* Version
+ * 0: original lzo version
+ * 1: lzo with support for RLE
+ */
+#define LZO_VERSION 1
+
 #define COPY4(dst, src)        \
                put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
 #if defined(CONFIG_X86_64) || defined(CONFIG_ARM64)
@@ -28,6 +34,7 @@
 #elif defined(CONFIG_X86_64) || defined(CONFIG_ARM64)
 #define LZO_USE_CTZ64  1
 #define LZO_USE_CTZ32  1
+#define LZO_FAST_64BIT_MEMORY_ACCESS
 #elif defined(CONFIG_X86) || defined(CONFIG_PPC)
 #define LZO_USE_CTZ32  1
 #elif defined(CONFIG_ARM) && (__LINUX_ARM_ARCH__ >= 5)
@@ -37,7 +44,7 @@
 #define M1_MAX_OFFSET  0x0400
 #define M2_MAX_OFFSET  0x0800
 #define M3_MAX_OFFSET  0x4000
-#define M4_MAX_OFFSET  0xbfff
+#define M4_MAX_OFFSET  0xbffe
 
 #define M1_MIN_LEN     2
 #define M1_MAX_LEN     2
@@ -53,6 +60,9 @@
 #define M3_MARKER      32
 #define M4_MARKER      16
 
+#define MIN_ZERO_RUN_LENGTH    4
+#define MAX_ZERO_RUN_LENGTH    (2047 + MIN_ZERO_RUN_LENGTH)
+
 #define lzo_dict_t      unsigned short
 #define D_BITS         13
 #define D_SIZE         (1u << D_BITS)