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fa780c5329
Most ChannelMediaDecoder::CloneImpl() functions just check to see whether their "is enabled" pref is still true, and then clone their true type. If we had a function to check whether the decoder for an arbitrary type was still enabled, we'd not need the "is enabled" checks in the CloneImpl() implementations. We'd then have removed the last custom behaviour in the ChannelMediaDecoder subclasses. MozReview-Commit-ID: D7kW6kb6ztW --HG-- extra : rebase_source : f463785d2975adceffd62037315d169736effbc0
76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DecoderTraits_h_
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#define DecoderTraits_h_
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#include "nsCOMPtr.h"
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class nsAString;
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class nsACString;
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namespace mozilla {
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class ChannelMediaDecoder;
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class DecoderDoctorDiagnostics;
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class MediaContainerType;
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struct MediaDecoderInit;
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struct MediaFormatReaderInit;
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class MediaDecoderOwner;
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class MediaFormatReader;
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class MediaResource;
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enum CanPlayStatus {
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CANPLAY_NO,
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CANPLAY_MAYBE,
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CANPLAY_YES
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};
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class DecoderTraits {
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public:
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// Returns the CanPlayStatus indicating if we can handle this container type.
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static CanPlayStatus CanHandleContainerType(const MediaContainerType& aContainerType,
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DecoderDoctorDiagnostics* aDiagnostics);
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// Returns true if we should handle this MIME type when it appears
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// as an <object> or as a toplevel page. If, in practice, our support
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// for the type is more limited than appears in the wild, we should return
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// false here even if CanHandleMediaType would return true.
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static bool ShouldHandleMediaType(const char* aMIMEType,
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DecoderDoctorDiagnostics* aDiagnostics);
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// Create a decoder for the given aType. Returns null if we
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// were unable to create the decoder.
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static already_AddRefed<ChannelMediaDecoder> CreateDecoder(
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MediaDecoderInit& aInit,
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DecoderDoctorDiagnostics* aDiagnostics);
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// Create a reader for thew given MIME type aType. Returns null
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// if we were unable to create the reader.
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static MediaFormatReader* CreateReader(const MediaContainerType& aType,
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MediaFormatReaderInit& aInit);
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// Returns true if MIME type aType is supported in video documents,
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// or false otherwise. Not all platforms support all MIME types, and
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// vice versa.
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static bool IsSupportedInVideoDocument(const nsACString& aType);
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// Convenience function that returns false if MOZ_FMP4 is not defined,
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// otherwise defers to MP4Decoder::IsSupportedType().
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static bool IsMP4SupportedType(const MediaContainerType& aType,
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DecoderDoctorDiagnostics* aDiagnostics);
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// Returns true if aType is MIME type of hls.
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static bool IsHttpLiveStreamingType(const MediaContainerType& aType);
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static bool IsSupportedType(const MediaContainerType& aType);
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};
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} // namespace mozilla
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#endif
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