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OpenNI 1.5.7
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XN_C_API XnStatus XN_C_DECL xnCreateImageGenerator | ( | XnContext * | pContext, |
XnNodeHandle * | phImageGenerator, | ||
XnNodeQuery * | pQuery, | ||
XnEnumerationErrors * | pErrors | ||
) |
Creates an image generator.
pContext | [in] The context in which to create the image generator. |
phImageGenerator | [out] A handle to the created image generator. |
pQuery | [in] Optional. Can be used to select which image generator to create. If not specified, this function may create any image generator that is available. |
pErrors | [in] Optional. If provided, will be filled with information about image generators that could not be created. |
XN_C_API XnGrayscale16Pixel* XN_C_DECL xnGetGrayscale16ImageMap | ( | XnNodeHandle | hInstance | ) |
Gets the current Grayscale16 image-map. This map is updated after a call to xnWaitAndUpdateData(). It is assumed that the node is currently in Grayscale16 pixel format.
hInstance | [in] A handle to the instance. |
XN_C_API XnGrayscale8Pixel* XN_C_DECL xnGetGrayscale8ImageMap | ( | XnNodeHandle | hInstance | ) |
Gets the current Grayscale8 image-map. This map is updated after a call to xnWaitAndUpdateData(). It is assumed that the node is currently in Grayscale8 pixel format.
hInstance | [in] A handle to the instance. |
XN_C_API XnUInt8* XN_C_DECL xnGetImageMap | ( | XnNodeHandle | hInstance | ) |
Gets the current image-map as a byte buffer.
This map is updated after a call to xnWaitAndUpdateData(). It is highly advised not to use this function. Instead, if you know the format of the image, use xnGetRGB24ImageMap(), xnGetYUV422ImageMap(), xnGetGrayscale8ImageMap() or xnGetGrayscale16ImageMap().
hInstance | [in] A handle to the instance. |
XN_C_API void XN_C_DECL xnGetImageMetaData | ( | XnNodeHandle | hInstance, |
XnImageMetaData * | pMetaData | ||
) |
Gets the current image-map meta data.
hInstance | [in] A handle to the instance. |
pMetaData | [in] The struct to be filled. |
XN_C_API XnPixelFormat XN_C_DECL xnGetPixelFormat | ( | XnNodeHandle | hInstance | ) |
Gets current pixel format.
hInstance | [in] A handle to the instance. |
XN_C_API XnRGB24Pixel* XN_C_DECL xnGetRGB24ImageMap | ( | XnNodeHandle | hInstance | ) |
Gets the current RGB24 image-map. This map is updated after a call to xnWaitAndUpdateData(). It is assumed that the node is currently in RGB24 pixel format.
hInstance | [in] A handle to the instance. |
XN_C_API XnYUV422DoublePixel* XN_C_DECL xnGetYUV422ImageMap | ( | XnNodeHandle | hInstance | ) |
Gets the current YUV422 image-map. This map is updated after a call to xnWaitAndUpdateData(). It is assumed that the node is currently in YUV422 pixel format.
hInstance | [in] A handle to the instance. |
XN_C_API XnBool XN_C_DECL xnIsPixelFormatSupported | ( | XnNodeHandle | hInstance, |
XnPixelFormat | Format | ||
) |
Checks if a specific pixel format is supported.
hInstance | [in] A handle to the instance. |
Format | [in] The format to check for. |
XN_C_API XnStatus XN_C_DECL xnRegisterToPixelFormatChange | ( | XnNodeHandle | hInstance, |
XnStateChangedHandler | handler, | ||
void * | pCookie, | ||
XnCallbackHandle * | phCallback | ||
) |
Registers a callback function to pixel format changes.
hInstance | [in] A handle to the instance. |
handler | [in] A pointer to a function that will be called when pixel format changes. |
pCookie | [in] A user cookie that will be passed to the callback function. |
phCallback | [out] Optional. Will be filled with a handle to be passed to xnUnregisterFromPixelFormatChange. |
XN_C_API XnStatus XN_C_DECL xnSetPixelFormat | ( | XnNodeHandle | hInstance, |
XnPixelFormat | Format | ||
) |
Sets the pixel format of the image map.
hInstance | [in] A handle to the instance. |
Format | [in] The format to set. |
XN_C_API void XN_C_DECL xnUnregisterFromPixelFormatChange | ( | XnNodeHandle | hInstance, |
XnCallbackHandle | hCallback | ||
) |
Unregisters a callback function which was registered using xnRegisterToPixelFormatChange.
hInstance | [in] A handle to the instance. |
hCallback | [in] The handle to the callback returned from xnRegisterToPixelFormatChange. |