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IRB_REQ_ISOCH_SET_CHANNEL_BANDWIDTH structure (1394.h)

  • Article

This structure contains the fields necessary for the Bus driver to carry out an IsochSetChannelBandwidth request.

Syntax

typedef struct _IRB_REQ_ISOCH_SET_CHANNEL_BANDWIDTH {
  HANDLE hBandwidth;
  ULONG  nMaxBytesPerFrame;
  ULONG  nBandwidthUnitsRequired;
} IRB_REQ_ISOCH_SET_CHANNEL_BANDWIDTH;

Members

hBandwidth

Bandwidth handle to reset.

nMaxBytesPerFrame

Specifies the new bandwidth for hBandwidth.

nBandwidthUnitsRequired

Specifies a pre-calculated value.

Remarks

This request does not require the caller to know the bandwidth that was allocated when a handle was generated. REQUEST_ISOCH_SET_CHANNEL_BANDWIDTH can be used to readjust the bandwidth on a bandwidth handle whose bytes per frame setting is unknown. Despite its name, this request does not involve isochronous channels in any way.

Requirements

Requirement Value
Header 1394.h