Add m-esr52 at 52.6.0

1 files changed, 60 insertions, 0 deletions

diff --git a/dom/media/MediaContentType.h b/dom/media/MediaContentType.h
new file mode 100644
index 000000000..67078757a
--- /dev/null
+++ b/dom/media/MediaContentType.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 MediaContentType_h_
+#define MediaContentType_h_
+
+#include "mozilla/Maybe.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+// Structure containing pre-parsed content type parameters, e.g.:
+// MIME type, optional codecs, etc.
+class MediaContentType
+{
+public:
+  // Parse UTF16 string to extract parameters.
+  explicit MediaContentType(const nsAString& aType);
+  // Parse UTF8 string to extract parameters.
+  explicit MediaContentType(const nsACString& aType);
+
+  bool IsValid() const { return !GetMIMEType().IsEmpty(); }
+
+  // MIME type. Empty if construction arguments could not be parsed.
+  const nsACString& GetMIMEType() const { return mMIMEType; }
+
+  // Was there an explicit 'codecs' parameter provided?
+  bool HaveCodecs() const { return mHaveCodecs; }
+  // Codecs. May be empty if not provided or explicitly provided as empty.
+  const nsAString& GetCodecs() const { return mCodecs; }
+
+  // Sizes and rates.
+  Maybe<int32_t> GetWidth() const { return GetMaybeNumber(mWidth); }
+  Maybe<int32_t> GetHeight() const { return GetMaybeNumber(mHeight); }
+  Maybe<int32_t> GetFramerate() const { return GetMaybeNumber(mFramerate); }
+  Maybe<int32_t> GetBitrate() const { return GetMaybeNumber(mBitrate); }
+
+private:
+  void Populate(const nsAString& aType);
+
+  Maybe<int32_t> GetMaybeNumber(int32_t aNumber) const
+  {
+    return (aNumber < 0) ? Maybe<int32_t>(Nothing()) : Some(int32_t(aNumber));
+  }
+
+  nsCString mMIMEType; // UTF8 MIME type. Empty if parsing failed.
+  bool mHaveCodecs; // If false, mCodecs must be empty.
+  nsString mCodecs;
+  int32_t mWidth; // -1 if not provided.
+  int32_t mHeight; // -1 if not provided.
+  int32_t mFramerate; // -1 if not provided.
+  int32_t mBitrate; // -1 if not provided.
+};
+
+} // namespace mozilla
+
+#endif // MediaContentType_h_