IAMVideoControl::GetMaxAvailableFrameRate
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4/8/2010
This method retrieves the maximum frame rate currently available, based on bus bandwidth usage for connections, such as USB and IEEE 1394, where the maximum frame rate may be limited by bandwidth availability.
Syntax
HRESULT GetMaxAvailableFrameRate(
IPin* pPin,
long iIndex,
SIZE Dimensions,
LONGLONG* MaxAvailableFrameRate
);
Parameters
- pPin
[in] Pointer to the IPin Interface to retrieve the maximum frame rate from.
- iIndex
[in] A long value that specifies the index of the format to query for maximum frame rate. This index corresponds to the order in which formats are enumerated by IAMStreamConfig::GetStreamCaps. The value must range between zero and the number of supported VIDEO_STREAM_CONFIG_CAPS structures returned by IAMStreamConfig::GetNumberOfCapabilities) minus one.
- Dimensions
[in] A SIZE structure that specifies the frame image size (width and height) in pixels.
- MaxAvailableFrameRate
[out] Pointer to a LONGLONG value that is the maximum available frame rate. The frame rate is expressed as frame duration in 100-nanosecond units.
Return Value
Returns an HRESULT value that depends on the implementation of the interface.
Requirements
| Windows Embedded CE | Windows Embedded CE 6.0 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment |
See Also
Reference
IAMVideoControl Interface
IPin Interface
IAMStreamConfig::GetStreamCaps
VIDEO_STREAM_CONFIG_CAPS
IAMStreamConfig::GetNumberOfCapabilities