IltmmTVTuner::AutoTune
#include "ltmm.h"
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C Syntax |
HRESULT IltmmTVTuner_AutoTune(pTV, Channel, pVal) |
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C++ Syntax |
HRESULT AutoTune(Channel, pVal) |
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IltmmTVTuner *pTV; |
/* pointer to an interface */ |
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long Channel; |
/* channel */ |
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long *pVal; |
/* pointer to a variable */ |
Fine tunes the specified channel by scanning for the most precise signal for that channel.
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Parameter |
Description |
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pTV |
Pointer to an IltmmTVTuner interface. |
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Channel |
Number of the channel to "fine tune". |
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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
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S_OK |
The function was successful. |
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<> S_OK |
An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow 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 IltmmTVTuner::StoreAutoTune to save the channel information.
For more detailed information, refer to the Microsoft documentation for IAMTVTuner::AutoTune.
Required DLLs and Libraries
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LTMM 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
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Elements: |
IltmmTVTuner::StoreAutoTune, IltmmTVTuner::get_TuningSpace, IltmmTVTuner::put_TuningSpace |
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Topics: |
Example
For a C example, refer to IltmmTVTuner::AutoTune Example for C.
For a C++ example, refer to IltmmTVTuner::AutoTune Example for C++.