The MV Trigger Source filter is used to facilitate selective image processing when using streaming video sources like firewire cameras that don't provide hardware trigger functionality. If the filter is triggered, the next available frame is passed through. The trigger mode can be disabled. If the trigger mode is disabled, the filter passes through all input frames.
| File: | MVTriggerSource.ax |
| CLSID: | CLSID_MVTrigger |
Supported Interfaces
Supported COM Events
The filter supports following events through the IMVFilterEvents interface. Look at the filter events page for more information.
| Event |
Value |
Description |
| MV_ALGORITHM_START_EVENT |
0 |
A filter starts processing a video frame or sample. |
| MV_ALGORITHM_END_EVENT |
1 |
A filter finishes processing a video frame or sample. |
Supported I/O Pins
| I/O Pin | Corresponding method | Discription |
| Trigger [boolean] |
IMVTrigger::Trigger | Triggers the MV Trigger Source Filter |
| Stream [boolean] |
IMVTrigger::put_UseTrigger | Activates or deactivates the trigger functionality. |
MV Trigger Source Property Page
Implements the IMVTrigger configuration interface.
| Trigger mode | |
| Streaming | |
| Trigger | Triggers the MV Trigger Source Filter |
| Use original time stamps | |
| Adjust time stamps |