Merge branch 'liblzma-upstream' into add-liblzma

1 files changed, 24 insertions, 0 deletions

diff --git a/Utilities/cmliblzma/liblzma/common/easy_decoder_memusage.c b/Utilities/cmliblzma/liblzma/common/easy_decoder_memusage.c
new file mode 100644
index 0000000..20bcd5b
--- /dev/null
+++ b/Utilities/cmliblzma/liblzma/common/easy_decoder_memusage.c
@@ -0,0 +1,24 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       easy_decoder_memusage.c
+/// \brief      Decoder memory usage calculation to match easy encoder presets
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "easy_preset.h"
+
+
+extern LZMA_API(uint64_t)
+lzma_easy_decoder_memusage(uint32_t preset)
+{
+	lzma_options_easy opt_easy;
+	if (lzma_easy_preset(&opt_easy, preset))
+		return UINT32_MAX;
+
+	return lzma_raw_decoder_memusage(opt_easy.filters);
+}