1 files changed, 43 insertions, 0 deletions
diff --git a/dom/media/doctor/DDLogValue.h b/dom/media/doctor/DDLogValue.h
new file mode 100644
index 0000000000..9a8253916f
--- /dev/null
+++ b/dom/media/doctor/DDLogValue.h
@@ -0,0 +1,43 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef DDLogValue_h_
+#define DDLogValue_h_
+
+#include "DDLogObject.h"
+#include "MediaResult.h"
+#include "mozilla/Variant.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+// Placeholder when no value is needed.
+struct DDNoValue {};
+
+// Value capturing a range (typically an offset and a number of bytes in a
+// resource).
+struct DDRange {
+  const int64_t mOffset;
+  const int64_t mBytes;
+  DDRange(int64_t aOffset, int64_t aBytes) : mOffset(aOffset), mBytes(aBytes) {}
+};
+
+// Value associated with a log message.
+using DDLogValue = Variant<DDNoValue, DDLogObject,
+                           const char*,  // Assumed to be a literal string.
+                           const nsCString, bool, int8_t, uint8_t, int16_t,
+                           uint16_t, int32_t, uint32_t, int64_t, uint64_t,
+                           double, DDRange, nsresult, MediaResult>;
+
+void AppendToString(const DDLogValue& aValue, nsCString& aString);
+
+class JSONWriter;
+void ToJSON(const DDLogValue& aValue, JSONWriter& aJSONWriter,
+            const char* aPropertyName);
+
+}  // namespace mozilla
+
+#endif  // DDLogValue_h_