tor-browser

The Tor Browser
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WaveDecoder.cpp (1888B)

      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 
      7 #include "WaveDecoder.h"
      8 
      9 #include "MediaContainerType.h"
     10 #include "MediaDecoder.h"
     11 
     12 namespace mozilla {
     13 
     14 /* static */
     15 bool WaveDecoder::IsSupportedType(const MediaContainerType& aContainerType) {
     16  if (!MediaDecoder::IsWaveEnabled()) {
     17    return false;
     18  }
     19  if (aContainerType.Type() == MEDIAMIMETYPE("audio/wave") ||
     20      aContainerType.Type() == MEDIAMIMETYPE("audio/x-wav") ||
     21      aContainerType.Type() == MEDIAMIMETYPE("audio/wav") ||
     22      aContainerType.Type() == MEDIAMIMETYPE("audio/x-pn-wav")) {
     23    return (aContainerType.ExtendedType().Codecs().IsEmpty() ||
     24            aContainerType.ExtendedType().Codecs() == "1" ||
     25            aContainerType.ExtendedType().Codecs() == "3" ||
     26            aContainerType.ExtendedType().Codecs() == "6" ||
     27            aContainerType.ExtendedType().Codecs() == "7");
     28  }
     29 
     30  return false;
     31 }
     32 
     33 /* static */
     34 nsTArray<UniquePtr<TrackInfo>> WaveDecoder::GetTracksInfo(
     35    const MediaContainerType& aType) {
     36  nsTArray<UniquePtr<TrackInfo>> tracks;
     37  if (!IsSupportedType(aType)) {
     38    return tracks;
     39  }
     40 
     41  const MediaCodecs& codecs = aType.ExtendedType().Codecs();
     42  if (codecs.IsEmpty()) {
     43    tracks.AppendElement(
     44        CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
     45            "audio/x-wav"_ns, aType));
     46    return tracks;
     47  }
     48 
     49  for (const auto& codec : codecs.Range()) {
     50    tracks.AppendElement(
     51        CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
     52            "audio/wave; codecs="_ns + NS_ConvertUTF16toUTF8(codec), aType));
     53  }
     54  return tracks;
     55 }
     56 
     57 }  // namespace mozilla