示例#1
0
/* static */
bool DecoderTraits::IsSupportedInVideoDocument(const nsACString& aType)
{
  return
#ifdef MOZ_OGG
    IsOggType(aType) ||
#endif
#ifdef MOZ_OMX_DECODER
    // We support amr inside WebApps on firefoxOS but not in general web content.
    // Ensure we dont create a VideoDocument when accessing amr URLs directly.
    (IsOmxSupportedType(aType) && !aType.EqualsASCII("audio/amr")) ||
#endif
#ifdef MOZ_WEBM
    IsWebMType(aType) ||
#endif
#ifdef MOZ_DASH
    IsDASHMPDType(aType) ||
#endif
#ifdef MOZ_GSTREAMER
    IsGStreamerSupportedType(aType) ||
#endif
#ifdef MOZ_MEDIA_PLUGINS
    (MediaDecoder::IsMediaPluginsEnabled() && IsMediaPluginsType(aType)) ||
#endif
#ifdef MOZ_WMF
    (IsWMFSupportedType(aType) &&
     Preferences::GetBool("media.windows-media-foundation.play-stand-alone", true)) ||
#endif
#ifdef MOZ_DIRECTSHOW
    IsDirectShowSupportedType(aType) ||
#endif
#ifdef MOZ_APPLEMEDIA
    IsAppleMediaSupportedType(aType) ||
#endif
    false;
}
/* static */
bool DecoderTraits::IsSupportedInVideoDocument(const nsACString& aType)
{
  return
#ifdef MOZ_OGG
    IsOggType(aType) ||
#endif
#ifdef MOZ_WIDGET_GONK
    IsOmxSupportedType(aType) ||
#endif
#ifdef MOZ_WEBM
    IsWebMType(aType) ||
#endif
#ifdef MOZ_DASH
    IsDASHMPDType(aType) ||
#endif
#ifdef MOZ_GSTREAMER
    IsGStreamerSupportedType(aType) ||
#endif
#ifdef MOZ_MEDIA_PLUGINS
    (MediaDecoder::IsMediaPluginsEnabled() && IsMediaPluginsType(aType)) ||
#endif
#ifdef MOZ_WMF
    IsWMFSupportedType(aType) ||
#endif
    false;
}
/* static */
already_AddRefed<MediaDecoder>
DecoderTraits::CreateDecoder(const nsACString& aType, MediaDecoderOwner* aOwner)
{
  nsRefPtr<MediaDecoder> decoder;

#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoder = new GStreamerDecoder();
  }
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoder = new RawDecoder();
  }
#endif
#ifdef MOZ_OGG
  if (IsOggType(aType)) {
    decoder = new OggDecoder();
  }
#endif
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoder = new WaveDecoder();
  }
#endif
#ifdef MOZ_WIDGET_GONK
  if (IsOmxSupportedType(aType)) {
    decoder = new MediaOmxDecoder();
  }
#endif
#ifdef MOZ_MEDIA_PLUGINS
  if (MediaDecoder::IsMediaPluginsEnabled() && GetMediaPluginHost()->FindDecoder(aType, NULL)) {
    decoder = new MediaPluginDecoder(aType);
  }
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoder = new WebMDecoder();
  }
#endif
#ifdef MOZ_DASH
  if (IsDASHMPDType(aType)) {
    decoder = new DASHDecoder();
  }
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoder = new WMFDecoder();
  }
#endif

  NS_ENSURE_TRUE(decoder != nullptr, nullptr);
  NS_ENSURE_TRUE(decoder->Init(aOwner), nullptr);

  return decoder.forget();
}
/* static */
MediaDecoderReader* DecoderTraits::CreateReader(const nsACString& aType, AbstractMediaDecoder* aDecoder)
{
  MediaDecoderReader* decoderReader = nullptr;

#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoderReader = new GStreamerReader(aDecoder);
  } else
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoderReader = new RawReader(aDecoder);
  } else
#endif
#ifdef MOZ_OGG
  if (IsOggType(aType)) {
    decoderReader = new OggReader(aDecoder);
  } else
#endif
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoderReader = new WaveReader(aDecoder);
  } else
#endif
#ifdef MOZ_WIDGET_GONK
  if (IsOmxSupportedType(aType)) {
    decoderReader = new MediaOmxReader(aDecoder);
  } else
#endif
#ifdef MOZ_MEDIA_PLUGINS
  if (MediaDecoder::IsMediaPluginsEnabled() &&
      GetMediaPluginHost()->FindDecoder(aType, nullptr)) {
    decoderReader = new MediaPluginReader(aDecoder, aType);
  } else
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoderReader = new WebMReader(aDecoder);
  } else
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoderReader = new WMFReader(aDecoder);
  } else
#endif
#ifdef MOZ_DASH
  // The DASH decoder is not supported.
#endif
  if (false) {} // dummy if to take care of the dangling else

  return decoderReader;
}
示例#5
0
/* static */
bool DecoderTraits::IsSupportedInVideoDocument(const nsACString& aType)
{
  // Forbid playing media in video documents if the user has opted
  // not to, using either the legacy WMF specific pref, or the newer
  // catch-all pref.
  if (!Preferences::GetBool("media.windows-media-foundation.play-stand-alone", true) ||
      !Preferences::GetBool("media.play-stand-alone", true)) {
    return false;
  }

  return
    IsOggType(aType) ||
#ifdef MOZ_OMX_DECODER
    // We support the formats in gB2GOnlyTypes only inside WebApps on firefoxOS
    // but not in general web content. Ensure we dont create a VideoDocument
    // when accessing those format URLs directly.
    (IsOmxSupportedType(aType) &&
     !IsB2GSupportOnlyType(aType)) ||
#endif
#ifdef MOZ_WEBM
    IsWebMType(aType) ||
#endif
#ifdef MOZ_GSTREAMER
    IsGStreamerSupportedType(aType) ||
#endif
#ifdef MOZ_ANDROID_OMX
    (MediaDecoder::IsAndroidMediaEnabled() && IsAndroidMediaType(aType)) ||
#endif
#ifdef MOZ_FMP4
    IsMP4SupportedType(aType) ||
#endif
#ifdef MOZ_WMF
    IsWMFSupportedType(aType) ||
#endif
#ifdef MOZ_DIRECTSHOW
    IsDirectShowSupportedType(aType) ||
#endif
#ifdef MOZ_APPLEMEDIA
    IsAppleMediaSupportedType(aType) ||
#endif
#ifdef NECKO_PROTOCOL_rtsp
    IsRtspSupportedType(aType) ||
#endif
    false;
}
示例#6
0
/* static */
MediaDecoderReader* DecoderTraits::CreateReader(const nsACString& aType, AbstractMediaDecoder* aDecoder)
{
  MediaDecoderReader* decoderReader = nullptr;

#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoderReader = new GStreamerReader(aDecoder);
  } else
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoderReader = new RawReader(aDecoder);
  } else
#endif
#ifdef MOZ_OGG
  if (IsOggType(aType)) {
    decoderReader = new OggReader(aDecoder);
  } else
#endif
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoderReader = new WaveReader(aDecoder);
  } else
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(aType)) {
    decoderReader = new MediaOmxReader(aDecoder);
  } else
#endif
#ifdef MOZ_MEDIA_PLUGINS
  if (MediaDecoder::IsMediaPluginsEnabled() &&
      GetMediaPluginHost()->FindDecoder(aType, nullptr)) {
    decoderReader = new MediaPluginReader(aDecoder, aType);
  } else
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoderReader = new WebMReader(aDecoder);
  } else
#endif
#ifdef MOZ_DIRECTSHOW
  // Note: DirectShowReader is preferred for MP3, but if it's disabled we
  // fallback to the WMFReader.
  if (IsDirectShowSupportedType(aType)) {
    decoderReader = new DirectShowReader(aDecoder);
  } else
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoderReader = new WMFReader(aDecoder);
  } else
#endif
#ifdef MOZ_APPLEMEDIA
  if (IsAppleMediaSupportedType(aType)) {
    decoderReader = new AppleMP3Reader(aDecoder);
  } else
#endif
#ifdef MOZ_DASH
  // The DASH decoder is not supported.
#endif
  if (false) {} // dummy if to take care of the dangling else

  return decoderReader;
}
示例#7
0
/* static */
already_AddRefed<MediaDecoder>
DecoderTraits::CreateDecoder(const nsACString& aType, MediaDecoderOwner* aOwner)
{
  nsRefPtr<MediaDecoder> decoder;

#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoder = new GStreamerDecoder();
  }
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoder = new RawDecoder();
  }
#endif
#ifdef MOZ_OGG
  if (IsOggType(aType)) {
    decoder = new OggDecoder();
  }
#endif
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoder = new WaveDecoder();
  }
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(aType)) {
    // AMR audio is enabled for MMS, but we are discouraging Web and App
    // developers from using AMR, thus we only allow AMR to be played on WebApps.
    if (aType.EqualsASCII("audio/amr")) {
      HTMLMediaElement* element = aOwner->GetMediaElement();
      if (!element) {
        return nullptr;
      }
      nsIPrincipal* principal = element->NodePrincipal();
      if (!principal) {
        return nullptr;
      }
      if (principal->GetAppStatus() < nsIPrincipal::APP_STATUS_PRIVILEGED) {
        return nullptr;
      }
    }
    decoder = new MediaOmxDecoder();
  }
#endif
#ifdef MOZ_MEDIA_PLUGINS
  if (MediaDecoder::IsMediaPluginsEnabled() && GetMediaPluginHost()->FindDecoder(aType, NULL)) {
    decoder = new MediaPluginDecoder(aType);
  }
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoder = new WebMDecoder();
  }
#endif
#ifdef MOZ_DASH
  if (IsDASHMPDType(aType)) {
    decoder = new DASHDecoder();
  }
#endif
#ifdef MOZ_DIRECTSHOW
  // Note: DirectShow decoder must come before WMFDecoder, else the pref
  // "media.directshow.preferred" won't be honored.
  if (IsDirectShowSupportedType(aType)) {
    decoder = new DirectShowDecoder();
  }
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoder = new WMFDecoder();
  }
#endif
#ifdef MOZ_APPLEMEDIA
  if (IsAppleMediaSupportedType(aType)) {
    decoder = new AppleDecoder();
  }
#endif

  NS_ENSURE_TRUE(decoder != nullptr, nullptr);
  NS_ENSURE_TRUE(decoder->Init(aOwner), nullptr);

  return decoder.forget();
}
示例#8
0
/* static */
CanPlayStatus
DecoderTraits::CanHandleMediaType(const char* aMIMEType,
                                  bool aHaveRequestedCodecs,
                                  const nsAString& aRequestedCodecs)
{
  char const* const* codecList = nullptr;
  CanPlayStatus result = CANPLAY_NO;
#ifdef MOZ_RAW
  if (IsRawType(nsDependentCString(aMIMEType))) {
    codecList = gRawCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_OGG
  if (IsOggType(nsDependentCString(aMIMEType))) {
    codecList = MediaDecoder::IsOpusEnabled() ? gOggCodecsWithOpus : gOggCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_WAVE
  if (IsWaveType(nsDependentCString(aMIMEType))) {
    codecList = gWaveCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(nsDependentCString(aMIMEType))) {
    codecList = gWebMCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_GSTREAMER
  if (GStreamerDecoder::CanHandleMediaType(nsDependentCString(aMIMEType),
                                           aHaveRequestedCodecs ? &aRequestedCodecs : nullptr)) {
    if (aHaveRequestedCodecs)
      return CANPLAY_YES;
    return CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(nsDependentCString(aMIMEType))) {
    result = CANPLAY_MAYBE;
    if (nsDependentCString(aMIMEType).EqualsASCII("audio/mpeg")) {
      codecList = gMpegAudioCodecs;
    } else {
      codecList = gH264Codecs;
    }
  }
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(nsDependentCString(aMIMEType))) {
    if (!aHaveRequestedCodecs) {
      return CANPLAY_MAYBE;
    }
    return WMFDecoder::CanPlayType(nsDependentCString(aMIMEType),
                                   aRequestedCodecs)
           ? CANPLAY_YES : CANPLAY_NO;
  }
#endif
#ifdef MOZ_DIRECTSHOW
  if (DirectShowDecoder::GetSupportedCodecs(nsDependentCString(aMIMEType), &codecList)) {
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_APPLEMEDIA
  if (IsAppleMediaSupportedType(nsDependentCString(aMIMEType), &codecList)) {
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_MEDIA_PLUGINS
  if (MediaDecoder::IsMediaPluginsEnabled() &&
      GetMediaPluginHost()->FindDecoder(nsDependentCString(aMIMEType), &codecList))
    result = CANPLAY_MAYBE;
#endif
  if (result == CANPLAY_NO || !aHaveRequestedCodecs || !codecList) {
    return result;
  }

  // See http://www.rfc-editor.org/rfc/rfc4281.txt for the description
  // of the 'codecs' parameter
  nsCharSeparatedTokenizer tokenizer(aRequestedCodecs, ',');
  bool expectMoreTokens = false;
  while (tokenizer.hasMoreTokens()) {
    const nsSubstring& token = tokenizer.nextToken();

    if (!CodecListContains(codecList, token)) {
      // Totally unsupported codec
      return CANPLAY_NO;
    }
    expectMoreTokens = tokenizer.separatorAfterCurrentToken();
  }
  if (expectMoreTokens) {
    // Last codec name was empty
    return CANPLAY_NO;
  }
  return CANPLAY_YES;
}
示例#9
0
/* static */
MediaDecoderReader* DecoderTraits::CreateReader(const nsACString& aType, AbstractMediaDecoder* aDecoder)
{
  MediaDecoderReader* decoderReader = nullptr;

  if (!aDecoder) {
    return decoderReader;
  }
#ifdef MOZ_FMP4
  if (IsMP4SupportedType(aType)) {
    decoderReader = new MP4Reader(aDecoder);
  } else
#endif
#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoderReader = new GStreamerReader(aDecoder);
  } else
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoderReader = new RawReader(aDecoder);
  } else
#endif
  if (IsOggType(aType)) {
    decoderReader = new OggReader(aDecoder);
  } else
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoderReader = new WaveReader(aDecoder);
  } else
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(aType)) {
#if ANDROID_VERSION >= 18
    decoderReader = MediaDecoder::IsOmxAsyncEnabled()
      ? static_cast<MediaDecoderReader*>(new MediaCodecReader(aDecoder))
      : static_cast<MediaDecoderReader*>(new MediaOmxReader(aDecoder));
#else
    decoderReader = new MediaOmxReader(aDecoder);
#endif
  } else
#endif
#ifdef MOZ_ANDROID_OMX
  if (MediaDecoder::IsAndroidMediaEnabled() &&
      GetAndroidMediaPluginHost()->FindDecoder(aType, nullptr)) {
    decoderReader = new AndroidMediaReader(aDecoder, aType);
  } else
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoderReader = new WebMReader(aDecoder);
  } else
#endif
#ifdef MOZ_DIRECTSHOW
  // Note: DirectShowReader is preferred for MP3, but if it's disabled we
  // fallback to the WMFReader.
  if (IsDirectShowSupportedType(aType)) {
    decoderReader = new DirectShowReader(aDecoder);
  } else
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoderReader = new WMFReader(aDecoder);
  } else
#endif
#ifdef MOZ_APPLEMEDIA
  if (IsAppleMediaSupportedType(aType)) {
    decoderReader = new AppleMP3Reader(aDecoder);
  } else
#endif
  if (false) {} // dummy if to take care of the dangling else

  return decoderReader;
}
示例#10
0
// Instantiates but does not initialize decoder.
static
already_AddRefed<MediaDecoder>
InstantiateDecoder(const nsACString& aType, MediaDecoderOwner* aOwner)
{
  nsRefPtr<MediaDecoder> decoder;

#ifdef MOZ_FMP4
  if (IsMP4SupportedType(aType)) {
    decoder = new MP4Decoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoder = new GStreamerDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoder = new RawDecoder();
    return decoder.forget();
  }
#endif
  if (IsOggType(aType)) {
    decoder = new OggDecoder();
    return decoder.forget();
  }
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoder = new WaveDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(aType)) {
    // we are discouraging Web and App developers from using those formats in
    // gB2GOnlyTypes, thus we only allow them to be played on WebApps.
    if (IsB2GSupportOnlyType(aType)) {
      dom::HTMLMediaElement* element = aOwner->GetMediaElement();
      if (!element) {
        return nullptr;
      }
      nsIPrincipal* principal = element->NodePrincipal();
      if (!principal) {
        return nullptr;
      }
      if (principal->GetAppStatus() < nsIPrincipal::APP_STATUS_PRIVILEGED) {
        return nullptr;
      }
    }
#if ANDROID_VERSION >= 18
    decoder = MediaDecoder::IsOmxAsyncEnabled()
      ? static_cast<MediaDecoder*>(new MediaCodecDecoder())
      : static_cast<MediaDecoder*>(new MediaOmxDecoder());
#else
    decoder = new MediaOmxDecoder();
#endif
    return decoder.forget();
  }
#endif
#ifdef NECKO_PROTOCOL_rtsp
  if (IsRtspSupportedType(aType)) {
#if ANDROID_VERSION >= 18
    decoder = MediaDecoder::IsOmxAsyncEnabled()
      ? static_cast<MediaDecoder*>(new RtspMediaCodecDecoder())
      : static_cast<MediaDecoder*>(new RtspOmxDecoder());
#else
    decoder = new RtspOmxDecoder();
#endif
    return decoder.forget();
  }
#endif
#ifdef MOZ_ANDROID_OMX
  if (MediaDecoder::IsAndroidMediaEnabled() &&
      GetAndroidMediaPluginHost()->FindDecoder(aType, nullptr)) {
    decoder = new AndroidMediaDecoder(aType);
    return decoder.forget();
  }
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoder = new WebMDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_DIRECTSHOW
  // Note: DirectShow should come before WMF, so that we prefer DirectShow's
  // MP3 support over WMF's.
  if (IsDirectShowSupportedType(aType)) {
    decoder = new DirectShowDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoder = new WMFDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_APPLEMEDIA
  if (IsAppleMediaSupportedType(aType)) {
    decoder = new AppleDecoder();
    return decoder.forget();
  }
#endif

  NS_ENSURE_TRUE(decoder != nullptr, nullptr);
  NS_ENSURE_TRUE(decoder->Init(aOwner), nullptr);
  return nullptr;
}
示例#11
0
/* static */
CanPlayStatus
DecoderTraits::CanHandleMediaType(const char* aMIMEType,
                                  bool aHaveRequestedCodecs,
                                  const nsAString& aRequestedCodecs)
{
  char const* const* codecList = nullptr;
  CanPlayStatus result = CANPLAY_NO;
#ifdef MOZ_RAW
  if (IsRawType(nsDependentCString(aMIMEType))) {
    codecList = gRawCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
  if (IsOggType(nsDependentCString(aMIMEType))) {
    codecList = MediaDecoder::IsOpusEnabled() ? gOggCodecsWithOpus : gOggCodecs;
    result = CANPLAY_MAYBE;
  }
#ifdef MOZ_WAVE
  if (IsWaveType(nsDependentCString(aMIMEType))) {
    codecList = gWaveCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
#if defined(MOZ_WEBM) && !defined(MOZ_OMX_WEBM_DECODER)
  if (IsWebMType(nsDependentCString(aMIMEType))) {
    codecList = gWebMCodecs;
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_FMP4
  if (IsMP4SupportedType(nsDependentCString(aMIMEType),
                                     aRequestedCodecs)) {
    return aHaveRequestedCodecs ? CANPLAY_YES : CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_GSTREAMER
  if (GStreamerDecoder::CanHandleMediaType(nsDependentCString(aMIMEType),
                                           aHaveRequestedCodecs ? &aRequestedCodecs : nullptr)) {
    if (aHaveRequestedCodecs)
      return CANPLAY_YES;
    return CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(nsDependentCString(aMIMEType))) {
    result = CANPLAY_MAYBE;
    if (nsDependentCString(aMIMEType).EqualsASCII("audio/mpeg")) {
      codecList = gMpegAudioCodecs;
#ifdef MOZ_OMX_WEBM_DECODER
    } else if (nsDependentCString(aMIMEType).EqualsASCII("audio/webm") ||
               nsDependentCString(aMIMEType).EqualsASCII("video/webm")) {
      codecList = gOMXWebMCodecs;
#endif
    } else {
      codecList = gH264Codecs;
    }
  }
#endif
#ifdef MOZ_DIRECTSHOW
  // Note: DirectShow should come before WMF, so that we prefer DirectShow's
  // MP3 support over WMF's.
  if (DirectShowDecoder::GetSupportedCodecs(nsDependentCString(aMIMEType), &codecList)) {
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_WMF
  if (!Preferences::GetBool("media.fragmented-mp4.exposed", false) &&
      IsWMFSupportedType(nsDependentCString(aMIMEType))) {
    if (!aHaveRequestedCodecs) {
      return CANPLAY_MAYBE;
    }
    return WMFDecoder::CanPlayType(nsDependentCString(aMIMEType),
                                   aRequestedCodecs)
           ? CANPLAY_YES : CANPLAY_NO;
  }
#endif
#ifdef MOZ_APPLEMEDIA
  if (IsAppleMediaSupportedType(nsDependentCString(aMIMEType), &codecList)) {
    result = CANPLAY_MAYBE;
  }
#endif
#ifdef MOZ_ANDROID_OMX
  if (MediaDecoder::IsAndroidMediaEnabled() &&
      GetAndroidMediaPluginHost()->FindDecoder(nsDependentCString(aMIMEType), &codecList))
    result = CANPLAY_MAYBE;
#endif
#ifdef NECKO_PROTOCOL_rtsp
  if (IsRtspSupportedType(nsDependentCString(aMIMEType))) {
    result = CANPLAY_MAYBE;
  }
#endif
  if (result == CANPLAY_NO || !aHaveRequestedCodecs || !codecList) {
    return result;
  }

  // See http://www.rfc-editor.org/rfc/rfc4281.txt for the description
  // of the 'codecs' parameter
  nsCharSeparatedTokenizer tokenizer(aRequestedCodecs, ',');
  bool expectMoreTokens = false;
  while (tokenizer.hasMoreTokens()) {
    const nsSubstring& token = tokenizer.nextToken();

    if (!CodecListContains(codecList, token)) {
      // Totally unsupported codec
      return CANPLAY_NO;
    }
    expectMoreTokens = tokenizer.separatorAfterCurrentToken();
  }
  if (expectMoreTokens) {
    // Last codec name was empty
    return CANPLAY_NO;
  }
  return CANPLAY_YES;
}
示例#12
0
// Instantiates but does not initialize decoder.
static
already_AddRefed<MediaDecoder>
InstantiateDecoder(const nsACString& aType, MediaDecoderOwner* aOwner)
{
    nsRefPtr<MediaDecoder> decoder;

#ifdef MOZ_FMP4
    if (IsMP4SupportedType(aType)) {
        decoder = new MP4Decoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_GSTREAMER
    if (IsGStreamerSupportedType(aType)) {
        decoder = new GStreamerDecoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_RAW
    if (IsRawType(aType)) {
        decoder = new RawDecoder();
        return decoder.forget();
    }
#endif
    if (IsOggType(aType)) {
        decoder = new OggDecoder();
        return decoder.forget();
    }
#ifdef MOZ_WAVE
    if (IsWaveType(aType)) {
        decoder = new WaveDecoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_OMX_DECODER
    if (IsOmxSupportedType(aType)) {
        // AMR audio is enabled for MMS, but we are discouraging Web and App
        // developers from using AMR, thus we only allow AMR to be played on WebApps.
        if (aType.EqualsASCII("audio/amr")) {
            dom::HTMLMediaElement* element = aOwner->GetMediaElement();
            if (!element) {
                return nullptr;
            }
            nsIPrincipal* principal = element->NodePrincipal();
            if (!principal) {
                return nullptr;
            }
            if (principal->GetAppStatus() < nsIPrincipal::APP_STATUS_PRIVILEGED) {
                return nullptr;
            }
        }
        decoder = new MediaOmxDecoder();
        return decoder.forget();
    }
#endif
#ifdef NECKO_PROTOCOL_rtsp
    if (IsRtspSupportedType(aType)) {
        decoder = new RtspOmxDecoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_MEDIA_PLUGINS
    if (MediaDecoder::IsMediaPluginsEnabled() &&
            GetMediaPluginHost()->FindDecoder(aType, nullptr)) {
        decoder = new MediaPluginDecoder(aType);
        return decoder.forget();
    }
#endif
#ifdef MOZ_WEBM
    if (IsWebMType(aType)) {
        decoder = new WebMDecoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_DIRECTSHOW
    // Note: DirectShow should come before WMF, so that we prefer DirectShow's
    // MP3 support over WMF's.
    if (IsDirectShowSupportedType(aType)) {
        decoder = new DirectShowDecoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_WMF
    if (IsWMFSupportedType(aType)) {
        decoder = new WMFDecoder();
        return decoder.forget();
    }
#endif
#ifdef MOZ_APPLEMEDIA
    if (IsAppleMediaSupportedType(aType)) {
        decoder = new AppleDecoder();
        return decoder.forget();
    }
#endif

    NS_ENSURE_TRUE(decoder != nullptr, nullptr);
    NS_ENSURE_TRUE(decoder->Init(aOwner), nullptr);
    return nullptr;
}