Bug 1299072: P3. Add MediaResult object. r?cpearce
MozReview-Commit-ID: CNedjeEi6PE
new file mode 100644
--- /dev/null
+++ b/dom/media/MediaResult.h
@@ -0,0 +1,60 @@
+/* -*- 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 MediaResult_h_
+#define MediaResult_h_
+
+#include "nsError.h"
+#include "nsPrintfCString.h"
+
+// MediaResult can be used interchangeably with nsresult.
+// It allows to store extra information such as where the error occurred.
+// While nsresult is typically passed by value; due to its potential size, using
+// MediaResult const references is recommended.
+namespace mozilla {
+
+class MediaResult
+{
+public:
+ MOZ_IMPLICIT MediaResult(nsresult aResult)
+ : mCode(aResult)
+ {
+ }
+ MediaResult(nsresult aResult, const nsACString& aMessage)
+ : mCode(aResult)
+ , mMessage(aMessage)
+ {
+ }
+ MediaResult(nsresult aResult, const char* aMessage)
+ : mCode(aResult)
+ , mMessage(aMessage)
+ {
+ }
+ MediaResult(const MediaResult& aOther) = default;
+ MediaResult(MediaResult&& aOther) = default;
+ MediaResult& operator=(const MediaResult& aOther) = default;
+ MediaResult& operator=(MediaResult&& aOther) = default;
+
+ nsresult Code() const { return mCode; }
+ const nsCString& Message() const { return mMessage; }
+
+ // Interoperations with nsresult.
+ bool operator==(nsresult aResult) const { return aResult == mCode; }
+ bool operator!=(nsresult aResult) const { return aResult != mCode; }
+ operator nsresult () const { return mCode; }
+
+ nsCString Description() const
+ {
+ return nsPrintfCString("0x%08x: %s", mCode, mMessage.get());
+ }
+
+private:
+ nsresult mCode;
+ nsCString mMessage;
+};
+
+} // namespace mozilla
+#endif // MediaResult_h_
\ No newline at end of file
--- a/dom/media/moz.build
+++ b/dom/media/moz.build
@@ -116,16 +116,17 @@ EXPORTS += [
'MediaFormatReader.h',
'MediaInfo.h',
'MediaMetadataManager.h',
'MediaPrefs.h',
'MediaQueue.h',
'MediaRecorder.h',
'MediaResource.h',
'MediaResourceCallback.h',
+ 'MediaResult.h',
'MediaSegment.h',
'MediaStatistics.h',
'MediaStreamGraph.h',
'MediaStreamListener.h',
'MediaStreamVideoSink.h',
'MediaTimer.h',
'MediaTrack.h',
'MediaTrackList.h',