The Windows Media MP3 decoder supports and enumerates the following output media types. PCM/IEEE format in WAVEFORMATEXTENSIBLE structure (when used as an MFT) IEEE floating point (when used as an MFT) PCM format (when used as a DMO or an MFT) The following table shows the audio format tags that represent the output types supported by the Windows Media MP3 decoder. The following table shows the audio format tag that represents the input type supported by the Windows Media MP3 decoder. If you obtain an IMFTransform interface on a Windows Media MP3 decoder, it behaves as an MFT. If you obtain an IMFTransform interface or an IPropertyStore interface on a Windows Media MP3 decoder, it behaves as an MFT.īy default, a Windows Media MP3 decoder behaves as a DMO. Operating systemĪ Windows Media MP3 decoder always behaves as a DMO.īy default, a Windows Media MP3 decoder behaves as a DMO. The following table shows the conditions under which a Windows Media MP3 decoder behaves as a DMO or an MFT. InterfacesĪn MP3 decoder object exposes the IMediaObject interface so that the object can be used as a DirectX Media Object (DMO), and it exposes the IMFTransform interface so that the object can be used as a Media Foundation Transform (MFT).Ī Windows Media MP3 decoder behaves as a DMO or an MFT depending on which interfaces you obtain and which version of Windows is running.
You can create an instance of the MP3 decoder by calling CoCreateInstance. The class identifier (CLSID) for the Windows Media MP3 decoder is represented by the constant CLSID_CMP3DecMediaObject. ISO/IEC 13818-3 (MPEG-2 Audio) Layer 3, low sampling frequency extension.The Windows Media MP3 decoder decodes audio files that have been encoded in the following formats.
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