X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fkey.cc;h=b8ba6d60ddfb7f90311bbc0d7b02925e8d0cd182;hb=8259e2771f85c33c531a83fe1a78668f158208da;hp=cf7b4d6d720a25acdfadf275aadbd450f02f4070;hpb=e4d5298e7a179d4103581cba05cbc516f94acf60;p=libdcp.git

diff --git a/src/key.cc b/src/key.cc
index cf7b4d6d..b8ba6d60 100644
--- a/src/key.cc
+++ b/src/key.cc
@@ -36,7 +36,7 @@
  */
 
 #include "key.h"
-#include <locked_sstream.h>
+#include "dcp_assert.h"
 #include <asdcp/AS_DCP.h>
 #include <asdcp/KM_prng.h>
 #include <asdcp/KM_util.h>
@@ -93,13 +93,21 @@ Key::operator= (Key const & other)
 string
 Key::hex () const
 {
-	locked_stringstream g;
-
-	for (unsigned int i = 0; i < ASDCP::KeyLen; ++i) {
-		g << setw(2) << setfill('0') << std::hex << static_cast<int> (_value[i]);
-	}
-
-	return g.str ();
+	DCP_ASSERT (ASDCP::KeyLen == 16);
+
+	char buffer[33];
+#ifdef LIBDCP_WINDOWS
+	__mingw_snprintf (
+#else
+	snprintf (
+#endif
+		buffer, sizeof(buffer),
+		"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx",
+		_value[0], _value[1], _value[2], _value[3], _value[4], _value[5], _value[6], _value[7],
+		_value[8], _value[9], _value[10], _value[11], _value[12], _value[13], _value[14], _value[15]
+		);
+
+	return buffer;
 }
 
 bool