1 files changed, 49 insertions, 0 deletions
diff --git a/src/liblzma/api/lzma/delta.h b/src/liblzma/api/lzma/delta.h
new file mode 100644
index 00000000..58afec18
--- /dev/null
+++ b/src/liblzma/api/lzma/delta.h
@@ -0,0 +1,49 @@
+/**
+ * \file        lzma/delta.h
+ * \brief       Delta filter
+ *
+ * \author      Copyright (C) 1999-2006 Igor Pavlov
+ * \author      Copyright (C) 2007 Lasse Collin
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ */
+
+#ifndef LZMA_H_INTERNAL
+#	error Never include this file directly. Use <lzma.h> instead.
+#endif
+
+
+/**
+ * \brief       Filter ID
+ *
+ * Filter ID of the Delta filter. This is used as lzma_options_filter.id.
+ */
+#define LZMA_FILTER_DELTA       LZMA_VLI_C(0x20)
+
+
+/**
+ * \brief       Options for the Delta filter
+ *
+ * These options are needed by both encoder and decoder.
+ */
+typedef struct {
+	/**
+	 * \brief       Delta distance as bytes
+	 *
+	 * Examples:
+	 *  - 16-bit stereo audio: distance = 4 bytes
+	 *  - 24-bit RGB image data: distance = 3 bytes
+	 */
+	uint32_t distance;
+#	define LZMA_DELTA_DISTANCE_MIN 1
+#	define LZMA_DELTA_DISTANCE_MAX 256
+
+} lzma_options_delta;