Google Flix Engine Linux Reference Manual - Manual (Page 102)

96 Flix Engine Linux Module Documentation
5.24 Crop
5.24.1 Detailed Description
The crop video filter is a filter used to isolate a subsection of an input image.
Filter Parameters:
Name | Type | Opt/Reqd | Range
=============================================================================
FE2_CROP_TOP | Numeric | Optional | [0,video height]
FE2_CROP_BOTTOM | Numeric | Optional | [0,video height]
FE2_CROP_LEFT | Numeric | Optional | [0,video width]
FE2_CROP_RIGHT | Numeric | Optional | [0,video width]
Example Usage:
sc = Flix2_AddFilter(&filter, flix, FE2_FILTER_CROP);
//set crop bounding box to (0,0,240,320) (t,l,b,r)
if(sc == ON2_OK)
sc = Flix2_FilterSetParam(filter, FE2_CROP_BOTTOM, 240);
if(sc == ON2_OK)
sc = Flix2_FilterSetParam(filter, FE2_CROP_RIGHT, 320);
Deprecated functions
• on2sc editor_options_GetCrop (const FLIX2HANDLE flix, on2bool ∗pCrop)
Determine if the crop filter is enabled.
• on2sc editor_options_SetCrop ( FLIX2HANDLE flix, const on2bool crop)
Enable/disable the crop filter.
• on2sc editor_options_GetCropBounds (const FLIX2HANDLE flix, int32_t ∗pTop, int32_t ∗pLeft,
int32_t ∗pBottom, int32_t ∗pRight)
Get the current bounding box used for cropping.
• on2sc editor_options_SetCropBounds ( FLIX2HANDLE flix, const int32_t top, const int32_t left,
const int32_t bottom, const int32_t right)
Set the current bounding box used for cropping.
Defines
• #define FE2_FILTER_CROP
Filter name for use with Flix2_AddFilter() .
• #define FE2_CROP_TOP
Filter parameter for setting bounding box’s top coordinate.
• #define FE2_CROP_BOTTOM
Filter parameter for setting bounding box’s bottom coordinate.
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