1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim:set ts=2 sw=2 sts=2 et cindent: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4  * License, v. 2.0. If a copy of the MPL was not distributed with this
5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #if !defined(MP4Decoder_h_)
7 #  define MP4Decoder_h_
8 
9 #  include "mozilla/UniquePtr.h"
10 #  include "nsStringFwd.h"
11 #  include "nsTArray.h"
12 
13 namespace mozilla {
14 
15 class MediaContainerType;
16 class DecoderDoctorDiagnostics;
17 class TrackInfo;
18 
19 // Decoder that uses a bundled MP4 demuxer and platform decoders to play MP4.
20 class MP4Decoder {
21  public:
22   // Returns true if aContainerType is an MP4 type that we think we can render
23   // with the a platform decoder backend.
24   // If provided, codecs are checked for support.
25   static bool IsSupportedType(const MediaContainerType& aContainerType,
26                               DecoderDoctorDiagnostics* aDiagnostics);
27 
28   static bool IsSupportedTypeWithoutDiagnostics(
29       const MediaContainerType& aContainerType);
30 
31   // Return true if aMimeType is a one of the strings used by our demuxers to
32   // identify H264. Does not parse general content type strings, i.e. white
33   // space matters.
34   static bool IsH264(const nsACString& aMimeType);
35 
36   // Return true if aMimeType is a one of the strings used by our demuxers to
37   // identify AAC. Does not parse general content type strings, i.e. white
38   // space matters.
39   static bool IsAAC(const nsACString& aMimeType);
40 
41   // Returns true if the MP4 backend is preffed on.
42   static bool IsEnabled();
43 
44   static nsTArray<UniquePtr<TrackInfo>> GetTracksInfo(
45       const MediaContainerType& aType);
46 
47  private:
48   static nsTArray<UniquePtr<TrackInfo>> GetTracksInfo(
49       const MediaContainerType& aType, MediaResult& aError);
50 };
51 
52 }  // namespace mozilla
53 
54 #endif
55