KSNODEPROPERTY_AUDIO_CHANNEL structure (ksmedia.h)
The KSNODEPROPERTY_AUDIO_CHANNEL structure specifies a property of a channel in a node.
Syntax
typedef struct {
KSNODEPROPERTY NodeProperty;
LONG Channel;
ULONG Reserved;
} KSNODEPROPERTY_AUDIO_CHANNEL, *PKSNODEPROPERTY_AUDIO_CHANNEL;
Members
NodeProperty
Specifies both the target node and the property to get or set. This member is a structure of type KSNODEPROPERTY.
Channel
Specifies a channel number. This member identifies the channel that is to be controlled. Given a stream with n channels, the channels are numbered 0 to n-1. When a channel number of -1 (0xFFFFFFFF) is specified, the level applies to the entire stream.
It is important to note that the standard USB audio specification provides a mechanism that allows audio drivers that support the master channel control feature, to apply channel-specific information to an entire stream. To implement this mechanism, the USB audio driver must set the channel number to zero (0). Therefore, when a USB audio driver sets the channel number to -1, there is no guarantee that the property information will be applied to the entire stream.
Reserved
Reserved for internal use by operating system. Do not use.
Requirements
| Requirement | Value |
|---|---|
| Header | ksmedia.h (include Ksmedia.h) |