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GetAudioData Method

Summary

Gets the embedded audio data from the specified extension list.

Syntax
C#
VB
Java
Objective-C
C++
public RasterNativeBuffer GetAudioData( 
   int stream 
) 
Public Function GetAudioData( _ 
   ByVal stream As Integer _ 
) As RasterNativeBuffer 
- (nullable NSData *)getAudioData:(NSInteger)stream error:(NSError **)error 
public RasterNativeBuffer getAudioData(int stream) 
public: 
RasterNativeBuffer GetAudioData(  
   int stream 
)  

Parameters

stream
Index of the audio stream to retrieve. The extensions may have more than one audio stream. This index is 0-based. Therefore, the first stream is stream 0, the second stream is stream 1, etc. To retrieve all the audio streams, retrieve the streams one by one until an empty RasterNativeBuffer is returned (empty RasterNativeBuffer will have a RasterNativeBuffer.Data set to IntPtr.Zero and RasterNativeBuffer.Length set to 0.

Return Value

A RasterNativeBuffer object containing the audio data.

Remarks

The audio data is stored inside extensions in the WAVE format.

The audio data can be played directly from memory, or the data can be written to a disk file and played from the disk. When writing the audio data to a disk file, give the file a .WAV extension.

The audio data pointer returned is freed automatically when this CodecsExtensionList object is disposed. so do not try to free this memory.

Example

For an example, refer to RasterCodecs.ReadExtensions.

Requirements

Target Platforms

Help Version 20.0.2019.3.11
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