Google Flix Engine Linux Reference Manual Instrukcja Użytkownika Pobierz pdf (Strona 346)

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340 Flix Engine Linux Page Documentation

$flix= flix2handlep_value($flixptr);

$flix is now the handle to use in the remaining API calls, for example:

Flix2_SetInputFile($flix,"/path/to/input.video");

When you’re ﬁnished with the handle you can clean up any resources allocated to it by calling:

delete_flix2handlep($flixptr);

7.2.2 Codec Handle Creation

The Codec Manipulation functions use the same interface to create a handle as the Filters. See below for a

detailed example.

7.2.3 Filter Handle Creation

The Filter Manipulation functions present an issue similar to creating a Flix Engine handle. The solution

is the same, to introduce a few helper functions, as demonstrated by the following PHP code:

##create a storage location for the filter handle

$filterptr= new_flix2plgnhandlep();

Flix2_AddFilter($filterptr,$flix,FE2_FILTER_PNGEX);

##retrieve the value of the handle for use in the remaining filter functions

$filter= flix2plgnhandlep_value($filterptr);

Flix2_FilterSetParam($filter,FE2_PNGEX_AUTO_EXPORT_COUNT,10);

## ...encode...

##cleanup

delete_flix2plgnhandlep($filterptr);

The above adds the PNG Image Export (Thumbnail) to the ﬁlter chain and sets it to auto export 10 images.

You will notice that the string constants are referenced by name.

Note:

You may reuse $filterptr in subsequent calls to Flix2_AddFilter(). Note that you must retrieve

the ﬁlter handle with flix2plgnhandlep_value() each time.

7.2.4 Constants

The string constants deﬁned by the Filters, as well as any other deﬁnes and enumeration members can all

be referenced by name in the language bindings. The method for referencing them varies from language to

language:

• Java

String a_string_constant= FlixEngine2.FE2_FILTER_PNGEX;

try {

codec.setParam(FlixEngine2.FE2_VP6_BITRATE,750.0)

} catch (FlixException e) {}

• Perl

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