tor-browser

The Tor Browser
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ADTSDecoder.cpp (1441B)

      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 
      9 #include "MediaContainerType.h"
     10 #include "PDMFactory.h"
     11 
     12 namespace mozilla {
     13 
     14 /* static */
     15 bool ADTSDecoder::IsEnabled() {
     16  RefPtr<PDMFactory> platform = new PDMFactory();
     17  return !platform->SupportsMimeType("audio/mp4a-latm"_ns).isEmpty();
     18 }
     19 
     20 /* static */
     21 bool ADTSDecoder::IsSupportedType(const MediaContainerType& aContainerType) {
     22  if (aContainerType.Type() == MEDIAMIMETYPE("audio/aac") ||
     23      aContainerType.Type() == MEDIAMIMETYPE("audio/aacp") ||
     24      aContainerType.Type() == MEDIAMIMETYPE("audio/x-aac")) {
     25    return IsEnabled() && (aContainerType.ExtendedType().Codecs().IsEmpty() ||
     26                           aContainerType.ExtendedType().Codecs() == "aac");
     27  }
     28 
     29  return false;
     30 }
     31 
     32 /* static */
     33 nsTArray<UniquePtr<TrackInfo>> ADTSDecoder::GetTracksInfo(
     34    const MediaContainerType& aType) {
     35  nsTArray<UniquePtr<TrackInfo>> tracks;
     36  if (!IsSupportedType(aType)) {
     37    return tracks;
     38  }
     39 
     40  tracks.AppendElement(
     41      CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
     42          "audio/mp4a-latm"_ns, aType));
     43 
     44  return tracks;
     45 }
     46 
     47 }  // namespace mozilla