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+/* -*- 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 DecoderTraits_h_
+#define DecoderTraits_h_
+
+#include "mozilla/UniquePtr.h"
+#include "nsStringFwd.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+
+class DecoderDoctorDiagnostics;
+class MediaContainerType;
+class MediaDataDemuxer;
+struct MediaFormatReaderInit;
+class MediaFormatReader;
+class MediaResource;
+class TrackInfo;
+
+enum CanPlayStatus { CANPLAY_NO, CANPLAY_MAYBE, CANPLAY_YES };
+
+class DecoderTraits {
+ public:
+ // Returns the CanPlayStatus indicating if we can handle this container type.
+ static CanPlayStatus CanHandleContainerType(
+ const MediaContainerType& aContainerType,
+ DecoderDoctorDiagnostics* aDiagnostics);
+
+ // Returns true if we should handle this MIME type when it appears
+ // as an <object> or as a toplevel page. If, in practice, our support
+ // for the type is more limited than appears in the wild, we should return
+ // false here even if CanHandleMediaType would return true.
+ static bool ShouldHandleMediaType(const char* aMIMEType,
+ DecoderDoctorDiagnostics* aDiagnostics);
+
+ // Create a demuxer for the given MIME type aType. Returns null if we
+ // were unable to create the demuxer.
+ static already_AddRefed<MediaDataDemuxer> CreateDemuxer(
+ const MediaContainerType& aType, MediaResource* aResource);
+
+ // Create a reader for thew given MIME type aType. Returns null
+ // if we were unable to create the reader.
+ static MediaFormatReader* CreateReader(const MediaContainerType& aType,
+ MediaFormatReaderInit& aInit);
+
+ // Returns true if MIME type aType is supported in video documents,
+ // or false otherwise. Not all platforms support all MIME types, and
+ // vice versa.
+ static bool IsSupportedInVideoDocument(const nsACString& aType);
+
+ // Returns true if aType is MIME type of hls.
+ static bool IsHttpLiveStreamingType(const MediaContainerType& aType);
+
+ // Returns true if aType is matroska type.
+ static bool IsMatroskaType(const MediaContainerType& aType);
+
+ // Returns an array of all TrackInfo objects described by this type.
+ static nsTArray<UniquePtr<TrackInfo>> GetTracksInfo(
+ const MediaContainerType& aType);
+};
+
+} // namespace mozilla
+
+#endif