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author Nathan Woods <npwoods@mess.org>2016-06-26 07:54:27 -0400
committer Nathan Woods <npwoods@mess.org>2016-06-26 08:12:07 -0400
commit5009b55430ba99295c0d7a31b336c61795f6cec3 (patch)
treee1e22ab3e5ee9661e40a1549bd0030e07edb8232 /src/lib/util/timeconv.h
parent3232bfad8909240fe18a63fe1c5090efe09bf626 (diff)
Introduced src/lib/util/timeconv.[c|h], moved code from un7z.cpp into it, and implemented win_time_point_from_filetime() in terms of it
Diffstat (limited to 'src/lib/util/timeconv.h')
-rw-r--r--src/lib/util/timeconv.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/src/lib/util/timeconv.h b/src/lib/util/timeconv.h
new file mode 100644
index 00000000000..7f6e5085fd4
--- /dev/null
+++ b/src/lib/util/timeconv.h
@@ -0,0 +1,54 @@
+// license:BSD-3-Clause
+// copyright-holders:Vas Crabb, Nathan Woods
+/***************************************************************************
+
+ timeconv.h
+
+ Time conversion utility code
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef MAME_LIB_UTIL_TIMECONV_H
+#define MAME_LIB_UTIL_TIMECONV_H
+
+#include "osdcore.h"
+
+#include <chrono>
+
+
+namespace util {
+
+/***************************************************************************
+ TYPE DEFINITIONS
+***************************************************************************/
+
+typedef std::chrono::duration<std::uint64_t, std::ratio<1, 10000000> > ntfs_duration;
+
+
+/***************************************************************************
+ INLINE FUNCTIONS
+***************************************************************************/
+
+// -------------------------------------------------
+// ntfs_duration_from_filetime
+// -------------------------------------------------
+
+inline ntfs_duration ntfs_duration_from_filetime(std::uint32_t high, std::uint32_t low)
+{
+ return ntfs_duration((std::uint64_t(high) << 32) | std::uint64_t(low));
+}
+
+
+/***************************************************************************
+ FUNCTION PROTOTYPES
+***************************************************************************/
+
+ntfs_duration ntfs_duration_from_filetime(std::uint32_t high, std::uint32_t low);
+std::chrono::system_clock::time_point system_clock_time_point_from_ntfs_duration(ntfs_duration d);
+
+
+} // namespace util
+
+#endif // MAME_LIB_UTIL_TIMECONV_H