IAMTimecodeGenerator::GetTCGMode
| Microsoft DirectShow 9.0 |
IAMTimecodeGenerator::GetTCGMode
The GetTCGMode method retrieves the SMPTE timecode generator properties.
Syntax
HRESULT GetTCGMode( long Param, long *pValue );
Parameters
Param
[in] Timecode generator mode. Specify one of the following modes you want to get settings for.
| Value | Description |
| ED_TCG_FRAMERATE | Frame rate |
| ED_TCG_REFERENCE_SOURCE | Source of the count value |
| ED_TCG_SYNC_SOURCE | Source of the hardware clock reference |
| ED_TCG_TIMECODE_TYPE | SMPTE timecode format of the generator |
pValue
[out] Pointer to the current setting of the mode specified in Param.
If you specify ED_TCG_FRAMERATE in Param, this parameter retrieves one of the following.
| Value | Description |
| ED_FORMAT_SMPTE_24 | 24 frames per second. |
| ED_FORMAT_SMPTE_25 | 25 frames per second. |
| ED_FORMAT_SMPTE_30 | 30 frames per second. Nondrop frame. |
| ED_FORMAT_SMPTE_30DROP | 30 frames per second. Drop frame (actually 29.97 fps). |
If you specify ED_TCG_REFERENCE_SOURCE in Param, this parameter retrieves one of the following.
| Value | Description |
| ED_TCG_FREE | No count reference source. |
| ED_TCG_READER | Synchronize to reader value (jamsync). |
If you specify ED_TCG_SYNC_SOURCE in Param, this parameter retrieves one of the following.
| Value | Description |
| ED_TCG_FREE | Lock to nothing (freerun). |
| ED_TCG_READER | Lock to timecode reader. |
| ED_TCG_VIDEO | Lock to incoming video. |
If you specify ED_TCG_TIMECODE_TYPE in Param, this parameter retrieves one of the following.
| Value | Description |
| ED_TCG_MIDI_FULL | MIDI full frame timecode |
| ED_TCG_MIDI_QF | MIDI quarter frame timecode |
| ED_TCG_SMPTE_LTC | Linear timecode |
| ED_TCG_SMPTE_VITC | Vertical interval timecode |
Return Values
Returns an HRESULT value that depends on the implementation of the interface.
Remarks
This method returns various settings of the timecode generator. For more information on ED_TCG_TIMECODE_TYPE, see IAMTimecodeReader::SetTCRMode.
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also