1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/DecoderTraits.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,69 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef DecoderTraits_h_
1.11 +#define DecoderTraits_h_
1.12 +
1.13 +#include "nsCOMPtr.h"
1.14 +
1.15 +class nsAString;
1.16 +class nsACString;
1.17 +
1.18 +namespace mozilla {
1.19 +
1.20 +class AbstractMediaDecoder;
1.21 +class MediaDecoder;
1.22 +class MediaDecoderOwner;
1.23 +class MediaDecoderReader;
1.24 +
1.25 +enum CanPlayStatus {
1.26 + CANPLAY_NO,
1.27 + CANPLAY_MAYBE,
1.28 + CANPLAY_YES
1.29 +};
1.30 +
1.31 +class DecoderTraits {
1.32 +public:
1.33 + // Returns the CanPlayStatus indicating if we can handle this
1.34 + // MIME type. The MIME type should not include the codecs parameter.
1.35 + // That parameter should be passed in aCodecs, and will only be
1.36 + // used if whether a given MIME type being handled depends on the
1.37 + // codec that will be used. If the codecs parameter has not been
1.38 + // specified, pass false in aHaveRequestedCodecs.
1.39 + static CanPlayStatus CanHandleMediaType(const char* aMIMEType,
1.40 + bool aHaveRequestedCodecs,
1.41 + const nsAString& aRequestedCodecs);
1.42 +
1.43 + // Returns true if we should handle this MIME type when it appears
1.44 + // as an <object> or as a toplevel page. If, in practice, our support
1.45 + // for the type is more limited than appears in the wild, we should return
1.46 + // false here even if CanHandleMediaType would return true.
1.47 + static bool ShouldHandleMediaType(const char* aMIMEType);
1.48 +
1.49 + // Create a decoder for the given aType. Returns null if we
1.50 + // were unable to create the decoder.
1.51 + static already_AddRefed<MediaDecoder> CreateDecoder(const nsACString& aType,
1.52 + MediaDecoderOwner* aOwner);
1.53 +
1.54 + // Create a reader for thew given MIME type aType. Returns null
1.55 + // if we were unable to create the reader.
1.56 + static MediaDecoderReader* CreateReader(const nsACString& aType,
1.57 + AbstractMediaDecoder* aDecoder);
1.58 +
1.59 + // Returns true if MIME type aType is supported in video documents,
1.60 + // or false otherwise. Not all platforms support all MIME types, and
1.61 + // vice versa.
1.62 + static bool IsSupportedInVideoDocument(const nsACString& aType);
1.63 +
1.64 + // Returns true if we should not start decoder until we receive
1.65 + // OnConnected signal. (currently RTSP only)
1.66 + static bool DecoderWaitsForOnConnected(const nsACString& aType);
1.67 +};
1.68 +
1.69 +}
1.70 +
1.71 +#endif
1.72 +
