IRTCClient::TemporalSpatialTradeOff
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8/28/2008
This method gets the temporal-spatial tradeoff for a session. This tradeoff is used for all media streaming:
- A lower tradeoff value increases the video resolution and decreases the frame rate.
- A higher value increases the frame rate and decreases the video resolution.
Note
put_TemporalSpatialTradeOff is a non-functional method and cannot be used to set the temporal-spatial tradeoff value. It can be called without error, but RTC will use the same value regardless of what is specified through this method. get_TemporalSpatialTradeOff will correctly retrieve the temporal-spatial tradeoff value.
Syntax
HRESULT put_TemporalSpatialTradeOff(
long lValue
);
HRESULT get_TemporalSpatialTradeOff(
long* plValue
);
Parameters
lValue
[in] Temporal-spatial tradeoff value.Note
This parameter will have no effect on the temporal-spatial tradeoff value. The method is non-functional.
This value is a number between 0 and 255 (on a linear scale), with the default being 128.
A value of 0 represents the maximum video quality with the lowest frame rate.
A value of 255 represents the highest frame rate with the lowest quality video resolution.
plValue
[out] Temporal-spatial tradeoff value.This value is a number between 0 and 255 (on a linear scale), with the default being 128.
A value of 0 represents the maximum video quality with the lowest frame rate.
A value of 255 represents the highest frame rate with the lowest quality video resolution.
Return Value
This method can return an RTC_E_ constant.
The following table shows an additional possible return value.
| Value | Description |
|---|---|
E_INVALIDARG |
Value out of range. |
Requirements
| Header | rtccore.h, rtccore.idl |
| Library | uuid.lib |
| Windows Embedded CE | Windows CE .NET 4.0 and later |