Edit

DVD_AudioAttributes structure (strmif.h)

  • Article

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The DVD_AudioAttributes structure is used in IDvdInfo2::GetAudioAttributes to receive the various audio attributes of the disc.

Syntax

typedef struct tagDVD_AudioAttributes {
  DVD_AUDIO_APPMODE  AppMode;
  BYTE               AppModeData;
  DVD_AUDIO_FORMAT   AudioFormat;
  LCID               Language;
  DVD_AUDIO_LANG_EXT LanguageExtension;
  BOOL               fHasMultichannelInfo;
  DWORD              dwFrequency;
  BYTE               bQuantization;
  BYTE               bNumberOfChannels;
  DWORD              dwReserved[2];
} DVD_AudioAttributes;

Members

AppMode

Indicates the current audio mode. If the mode returned is DVD_AudioMode_Karaoke, call IDvdInfo2::GetKaraokeAttributes to get more info.

AppModeData

AudioFormat

Describes the format (encoding mode) of the audio stream.

Language

An LCID value indicating the language of the audio stream. Is zero if no language is present.

LanguageExtension

A DVD_AUDIO_LANG_EXT enumeration that will be filled in if any information is available on the disc.

fHasMultichannelInfo

Indicates whether multichannel attributes are present. If TRUE, it means there is additional mixing information available, such as for SurroundSound. Call IDvdInfo2::GetTitleAttributes to retrieve the multichannel information.

dwFrequency

The frequency in hertz (48k, 96k) of the audio stream.

bQuantization

The resolution of the audio stream (16, 20, 24 bits, or other) Zero indicates the resolution is unknown.

bNumberOfChannels

The number of channels. For example, 5.1 Dolby AC-3 has six channels.

dwReserved[2]

Reserved.

Requirements

Requirement Value
Header strmif.h (include Dshow.h)

See also

DirectShow Structures