ADLINK Technology HDV62A, User Manual

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90 DirectShow Programming Guide
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VB.Net
Structure AUDIO_FORMATS
Dim NumChannels As UInteger
Dim Channels As IntPtr
Dim NumBitsPerSample As UInteger
Dim BitsPerSamples As IntPtr
Dim NumSamplesPerSec As UInteger
Dim SamplesPerSecs As IntPtr
End Structure
Public Structure AUDIO_CAPABILITIES
Dim HdmiAudioFormats As AUDIO_FORMATS
Dim Spdif1AudioFormats As AUDIO_FORMATS
Dim Spdif2AudioFormats As AUDIO_FORMATS
End Structure
A variable of structure AUDIO_CAPABILITIES must be
declared and elements of Channels, BitsPerSamples, and
SamplesPerSecs set as null pointers. Calling GetAudioCa-
pabilities() acquires the sizes of NumChannels,
NumBitsPerSample, and NumSamplesPerSec, sufficient
buffers to contain all settings of the array must be allocated,
and then GetAudioCapabilities() called again to get all
arrays.