VideoControlFlags enumeration (strmif.h)

Specifies the video mode of operation for a video device.

Syntax

typedef enum tagVideoControlFlags {
  VideoControlFlag_FlipHorizontal = 0x1,
  VideoControlFlag_FlipVertical = 0x2,
  VideoControlFlag_ExternalTriggerEnable = 0x4,
  VideoControlFlag_Trigger = 0x8
} VideoControlFlags;

Constants

VideoControlFlag_FlipHorizontal Value: 0x1 Specifies that the picture is flipped horizontally.
VideoControlFlag_FlipVertical Value: 0x2 Specifies that the picture is flipped vertically.
VideoControlFlag_ExternalTriggerEnable Value: 0x4 Sets up a stream to capture a trigger from an external source, for example, a push button on a camera. Buffers can be queued to the driver but will not be passed up from the WDM capture driver (for compression, display, or writing to a file) until the external event happens. See Remarks.
VideoControlFlag_Trigger Value: 0x8 In software, simulates an external trigger when the stream has the VideoControlFlag_ExternalTriggerEnable flag set.

Remarks

The IAMVideoControl interface uses this enumerated data type.

Multiple capture buffers are queued to a capture driver and are filled at a fixed rate once the stream is put into the "run" state. If the VideoControlFlag_ExternalTriggerEnable flag is set, a filled buffer is not passed up from the WDM capture driver for compression, display, or writing to a file until the external event happens.

Requirements

Header	strmif.h (include Dshow.h)

See also

DirectShow Enumerated Types

IAMVideoControl