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diff --git a/lzma/lzma/lzma2_encoder.h b/lzma/lzma/lzma2_encoder.h
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+++ b/lzma/lzma/lzma2_encoder.h
@@ -0,0 +1,43 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       lzma2_encoder.h
+/// \brief      LZMA2 encoder
+///
+//  Authors:    Igor Pavlov
+//              Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_LZMA2_ENCODER_H
+#define LZMA_LZMA2_ENCODER_H
+
+#include "common.h"
+
+
+/// Maximum number of bytes of actual data per chunk (no headers)
+#define LZMA2_CHUNK_MAX (UINT32_C(1) << 16)
+
+/// Maximum uncompressed size of LZMA chunk (no headers)
+#define LZMA2_UNCOMPRESSED_MAX (UINT32_C(1) << 21)
+
+/// Maximum size of LZMA2 headers
+#define LZMA2_HEADER_MAX 6
+
+/// Size of a header for uncompressed chunk
+#define LZMA2_HEADER_UNCOMPRESSED 3
+
+
+extern lzma_ret lzma_lzma2_encoder_init(
+		lzma_next_coder *next, const lzma_allocator *allocator,
+		const lzma_filter_info *filters);
+
+extern uint64_t lzma_lzma2_encoder_memusage(const void *options);
+
+extern lzma_ret lzma_lzma2_props_encode(const void *options, uint8_t *out);
+
+extern uint64_t lzma_lzma2_block_size(const void *options);
+
+#endif