LEADTOOLS Media Foundation Help > LEADTOOLS Media Foundation Features > Media Foundation Function References > IltmfTVTuner Interface > IltmfTVTuner::AutoTune |
#include "ltmf.h"
C Syntax |
HRESULT IltmfTVTuner_AutoTune(pTV, Channel, pVal) |
C++ Syntax |
HRESULT AutoTune(Channel, pVal) |
IltmfTVTuner *pTV; |
/* pointer to an interface */ |
long Channel; |
/* channel */ |
long *pVal; |
/* pointer to a variable */ |
Fine tunes the specified channel by scanning for the most precise signal for that channel.
Parameter |
Description |
pTV |
Pointer to an IltmfTVTuner interface. |
Channel |
Number of the channel to "fine tune". |
pVal |
Pointer to a variable to be updated with a value that indicates whether the signal was found. A nonzero value indicates the signal was found. Zero indicates the signal was not found. |
Returns
S_OK |
The function was successful. |
<> S_OK |
An error occurred. Refer to the Error Codes or the HRESULT error codes in the MediaFoundation documentation. |
Comments
This function maps the TV channel to a frequency and searches for the most precise frequency for this channel, in the area. Calling this function for every channel in a region or country allows you to create a table of channel and frequency information. Once all channels in the region or country have been scanned, use IltmfTVTuner::StoreAutoTune to save the channel information.
For more detailed information, refer to the Microsoft documentation for IAMTVTuner::AutoTune.
Required DLLs and Libraries
LTMF For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application. |
Win32, x64
See Also
Elements: |
IltmfTVTuner::StoreAutoTune, IltmfTVTuner::get_TuningSpace, IltmfTVTuner::put_TuningSpace |
Topics: |
Example
For a C++ example, refer to IltmfTVTuner::AutoTune Example for C++.