AudioFile Class

Reference

Definition

Namespace:: AudioToolbox

Assembly:: Xamarin.iOS.dll

Assembly:: Xamarin.Mac.dll

Important

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Class used to create audio files or read audio files.

public class AudioFile : IDisposable, ObjCRuntime.INativeObject

type AudioFile = class
    interface IDisposable
    interface INativeObject

Inheritance: Object
AudioFile

Derived: AudioToolbox.AudioSource

Implements: INativeObject IDisposable

Remarks

Use the Create, Open and OpenRead factory methods to create instances of this class.

This class provides access to the encoder and decoder for compressed audio files.

Constructors

AudioFile(Boolean)

This is an internal constructor, do not use directly.

Properties

AlbumArtwork	Gets the album artwork for the audio file.
AudioFormats	Returns a list of the supported audio formats.
BitRate	Audio file bit rate.
ChannelLayout	Gets the channel layout of the audio file.
ChunkIDs	Gets an array of four-character codes that describe the kind of each chunk in the audio file.
DataFormat	Gets the AudioStreamBasicDescription, if present, that describes the format of the audio data.
DataOffset	Gets the offset, in bytes, to the beginning of the audio data in the audio file.
DataPacketCount	Gets the number of audio data packets in the audio file.
DeferSizeUpdates	Gets or sets a Boolean value that controls whether the updating of file size information in the header will be deferred until the file is read, optimized, or closed. The default, which is safer, is `false`
EstimatedDuration	Gets the estimated duration, in seconds, of the audio data in the file.
FileType	Audio file type.
Handle	Handle (pointer) to the unmanaged object representation.
ID3Tag	Gets a byte array that contains the ID3Tag for the audio data.
InfoDictionary	Gets the CF dictionary that contains audio file metadata.
IsOptimized	Gets a Boolean value that tells whether the audio file has been optimized and is ready to receive sound data.
Length	Audio file size, in bytes.
MagicCookie	The magic cookie for this file.
MarkerList	Gets the AudioFileMarkerList that contains the markers for the audio file.
MaximumPacketSize	Gets the maximum audio packet size.
PacketSizeUpperBound	Gets the theoretical upper bound for the audio packet size for audio data in the file.
PacketTableInfo	Gets or sets the AudioFilePacketTableInfo structure that describes the audio file packet table.
PacketTableInfoStatus	Gets the status of the audio packet table..
RegionList	Gets a list of all the audio regions in the audio file.
ReserveDuration	Gets the amount of recording time to reserve in the audio file.
StreamBasicDescription	The audio basic description, as determined by decoding the file.
StreamBasicDescriptionStatus	Gets the status of the stream's basic description.

Methods

ByteToPacket(Int64, Int32, Boolean)	Converts a position on a stream to its packet location.
CountUserData(UInt32)	Returns the number of user data items that have the specified `userData`.
Create(CFUrl, AudioFileType, AudioStreamBasicDescription, AudioFileFlags)	Creates a new audio file.
Create(NSUrl, AudioFileType, AudioStreamBasicDescription, AudioFileFlags)	Creates a new audio file.
Create(String, AudioFileType, AudioStreamBasicDescription, AudioFileFlags)	Creates a new audio file.
Dispose()	Releases the resources used by the AudioFile object.
Dispose(Boolean)	Releases the resources used by the AudioFile object.
Finalize()	Finalizer for the AudioFile object
FrameToPacket(Int64, Int32)	Converts an audio frame into a packet offset.
GetProperty(AudioFileProperty, Int32)	Returns the value of the specified audio property, and stores the number of bytes allocated to store it in `size`.
GetProperty(AudioFileProperty, Int32, IntPtr)	Returns the value of the specified audio property, stores it in `outData`, and stores the number of bytes allocated to store it in `dataSize`.
GetPropertyInfo(AudioFileProperty, Int32, Int32)	Returns the value of the specified audio property, and stores the number of bytes allocated to store it in `size`, and indicates whether the value is writeable.
GetUserData(Int32, Int32, Int32, IntPtr)	Gets the `index`th chunk of user data that has the specified `userDataID`.
GetUserDataSize(UInt32, Int32)	Gets the size of the `index`th chunk of user data that has the specified `userDataID`.
IsPropertyWritable(AudioFileProperty)	Checks whether the property value is settable.
Open(CFUrl, AudioFilePermission, AudioFileError, AudioFileType)	Opens an audio file.
Open(CFUrl, AudioFilePermission, AudioFileType)	Opens an audio file.
Open(NSUrl, AudioFilePermission, AudioFileError, AudioFileType)	Opens an audio file.
Open(NSUrl, AudioFilePermission, AudioFileType)	Opens an audio file.
Open(String, AudioFilePermission, AudioFileError, AudioFileType)	Opens an audio file.
Open(String, AudioFilePermission, AudioFileType)	Opens an audio file.
OpenRead(CFUrl, AudioFileError, AudioFileType)	Opens an audio file for reading.
OpenRead(CFUrl, AudioFileType)	Opens the specified audio file for reading, frames will be decoded from the native format to raw audio data.
OpenRead(NSUrl, AudioFileError, AudioFileType)	Opens an audio file for reading.
OpenRead(NSUrl, AudioFileType)	Opens the specified audio file for reading, frames will be decoded from the native format to raw audio data.
OpenRead(String, AudioFileError, AudioFileType)	Opens an audio file for reading.
OpenRead(String, AudioFileType)	Opens an audio file for reading.
Optimize()	Optimizes the audio file, thus preparing it to receive audio data.
PacketToByte(Int64, Boolean)	Returns the byte offset for the `packet` and indicates whether this is an estimated value in `isEstimate`.
PacketToFrame(Int64)	Returns the frame number for the specified `packet`.
Read(Int64, Byte[], Int32, Int32, Boolean)	Reads `count` bytes from `buffer`, starting at `startingByte`.
ReadFixedPackets(Boolean, Int64, Int32, Byte[], Int32, Int32)	Reads a fixed amount of audio data.
ReadFixedPackets(Boolean, Int64, Int32, Byte[], Int32, Int32, AudioFileError)	Reads a fixed amount of audio data.
ReadFixedPackets(Int64, Int32, Byte[])	Reads `nPackets` bytes into `buffer`, starting at `inStartingPacket`.
ReadFixedPackets(Int64, Int32, Byte[], AudioFileError)	Reads a fixed amount of audio data.
ReadPacketData(Boolean, Int64, Int32, Byte[], Int32, Int32)	Reads packets of audio data from an audio file.
ReadPacketData(Boolean, Int64, Int32, Byte[], Int32, Int32)	Reads packets of audio data from an audio file.
ReadPacketData(Boolean, Int64, Int32, Byte[], Int32, Int32, AudioFileError)	Reads packets of audio data.
ReadPacketData(Boolean, Int64, Int32, Byte[], Int32, Int32, AudioFileError)	Reads packets of audio data.
ReadPacketData(Boolean, Int64, Int32, IntPtr, Int32)	Reads packets of audio data from an audio file.
ReadPacketData(Boolean, Int64, Int32, IntPtr, Int32, AudioFileError)	Reads packets of audio data.
ReadPacketData(Boolean, Int64, Int32, IntPtr, Int32, AudioFileError, AudioStreamPacketDescription[])	Reads packets of audio data.
ReadPacketData(Int64, Int32, Byte[])	Reads packets of audio data from an audio file.
ReadPacketData(Int64, Int32, Byte[], AudioFileError)	Reads packets of audio data.
RemoveUserData(Int32, Int32)	Removes the chunk of user data at the specified `index` in the user data that is identified by `userDataID`.
SetProperty(AudioFileProperty, Int32, IntPtr)	Sets the value of the specified `property` to `propertyData`, which must have the size that is specified in `dataSize`.
SetUserData(Int32, Int32, Int32, IntPtr)	Sets the value at the specified `index` into the specified `property` to `propertyData`, which must have the size that is specified in `dataSize`.
Write(Int64, Byte[], Int32, Int32, Boolean)	Writes a block of data to the audio file.
Write(Int64, Byte[], Int32, Int32, Boolean, Int32)	Writes data to an audo file.
WritePackets(Boolean, Int32, AudioStreamPacketDescription[], Int64, Int32, IntPtr)	Writes audio packets to the file.
WritePackets(Boolean, Int64, AudioStreamPacketDescription[], Byte[], Int32, Int32)	Writes audio packets to the file.
WritePackets(Boolean, Int64, AudioStreamPacketDescription[], Byte[], Int32, Int32, Int32)	Writes packets to an audo file.
WritePackets(Boolean, Int64, AudioStreamPacketDescription[], IntPtr, Int32)	Write audio packets to the audio file.
WritePackets(Boolean, Int64, AudioStreamPacketDescription[], IntPtr, Int32, Int32)	Writes packets to an audo file.
WritePackets(Boolean, Int64, Int32, IntPtr, Int32)	Writes packets to an audo file.

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