dom/media/ADTSDecoder.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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
   7 #include "ADTSDecoder.h"
   8 #include "MediaContainerType.h"
   9 #include "PDMFactory.h"
  10
  11 namespace mozilla {
  12
  13 /* static */
  14 bool ADTSDecoder::IsEnabled() {
  15   RefPtr<PDMFactory> platform = new PDMFactory();
  16   return !platform->SupportsMimeType("audio/mp4a-latm"_ns).isEmpty();
  17 }
  18
  19 /* static */
  20 bool ADTSDecoder::IsSupportedType(const MediaContainerType& aContainerType) {
  21   if (aContainerType.Type() == MEDIAMIMETYPE("audio/aac") ||
  22       aContainerType.Type() == MEDIAMIMETYPE("audio/aacp") ||
  23       aContainerType.Type() == MEDIAMIMETYPE("audio/x-aac")) {
  24     return IsEnabled() && (aContainerType.ExtendedType().Codecs().IsEmpty() ||
  25                            aContainerType.ExtendedType().Codecs() == "aac");
  26   }
  27
  28   return false;
  29 }
  30
  31 /* static */
  32 nsTArray<UniquePtr<TrackInfo>> ADTSDecoder::GetTracksInfo(
  33     const MediaContainerType& aType) {
  34   nsTArray<UniquePtr<TrackInfo>> tracks;
  35   if (!IsSupportedType(aType)) {
  36     return tracks;
  37   }
  38
  39   tracks.AppendElement(
  40       CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
  41           "audio/mp4a-latm"_ns, aType));
  42
  43   return tracks;
  44 }
  45
  46 }  // namespace mozilla