set_framegrabber_paramT_set_framegrabber_paramSetFramegrabberParamSetFramegrabberParamset_framegrabber_param (算子)
名称
set_framegrabber_paramT_set_framegrabber_paramSetFramegrabberParamSetFramegrabberParamset_framegrabber_param — 设置图像采集设备的特定参数。
签名
Herror T_set_framegrabber_param(const Htuple AcqHandle, const Htuple Param, const Htuple Value)
def set_framegrabber_param(acq_handle: HHandle, param: MaybeSequence[str], value: HTupleType) -> None
描述
算子 set_framegrabber_paramset_framegrabber_paramSetFramegrabberParamSetFramegrabberParamSetFramegrabberParamset_framegrabber_param sets specific parameters
for the image acquisition device specified by AcqHandleAcqHandleAcqHandleAcqHandleacqHandleacq_handle.
Additional information for a specific image acquisition device is
available via info_framegrabberinfo_framegrabberInfoFramegrabberInfoFramegrabberInfoFramegrabberinfo_framegrabber。A comprehensive documentation
of all image acquisition device-specific parameters can be found in the
corresponding interface documentation in the directory
doc/html/reference/acquisition.
注意
For a multithreaded application,
info_framegrabberinfo_framegrabberInfoFramegrabberInfoFramegrabberInfoFramegrabberinfo_framegrabber, open_framegrabberopen_framegrabberOpenFramegrabberOpenFramegrabberOpenFramegrabberopen_framegrabber, and
close_framegrabberclose_framegrabberCloseFramegrabberCloseFramegrabberCloseFramegrabberclose_framegrabber are executed exclusively.
set_framegrabber_paramset_framegrabber_paramSetFramegrabberParamSetFramegrabberParamSetFramegrabberParamset_framegrabber_param runs in parallel with all non-exclusive
operators inside and outside of this group.
执行信息
- 多线程类型：可重入（与非独占算子并行运行）。
- 多线程作用域：全局（可从任何线程调用）。
- 未采用并行化处理。
此算子修改后续输入参数的状态：
在执行此算子时，若该参数值需在多个线程间使用，则必须对其访问进行同步。
参数
AcqHandleAcqHandleAcqHandleAcqHandleacqHandleacq_handle (输入控制，状态被修改) framegrabber → HFramegrabber, HTupleHHandleHTupleHtuple (handle) (IntPtr) (HHandle) (handle)
Handle of the acquisition device to be used.
ParamParamParamParamparamparam (输入控制) string(-array) → HTupleMaybeSequence[str]HTupleHtuple (string) (string) (HString) (char*)
Parameter name.
建议值：
'color_space'"color_space""color_space""color_space""color_space""color_space", 'continuous_grabbing'"continuous_grabbing""continuous_grabbing""continuous_grabbing""continuous_grabbing""continuous_grabbing", 'external_trigger'"external_trigger""external_trigger""external_trigger""external_trigger""external_trigger", 'grab_timeout'"grab_timeout""grab_timeout""grab_timeout""grab_timeout""grab_timeout", 'image_height'"image_height""image_height""image_height""image_height""image_height", 'image_width'"image_width""image_width""image_width""image_width""image_width", 'port'"port""port""port""port""port", 'start_column'"start_column""start_column""start_column""start_column""start_column", 'start_row'"start_row""start_row""start_row""start_row""start_row", 'volatile'"volatile""volatile""volatile""volatile""volatile"
ValueValueValueValuevaluevalue (输入控制) string(-array) → HTupleHTupleTypeHTupleHtuple (string / real / integer / handle) (string / double / int / long / HHandle) (HString / double / Hlong / HHandle) (char* / double / Hlong / handle)
Parameter value to be set.
结果
If the image acquisition device is open and the specified parameter /
parameter value is supported, the operator set_framegrabber_paramset_framegrabber_paramSetFramegrabberParamSetFramegrabberParamSetFramegrabberParamset_framegrabber_param 返回值 2 ( H_MSG_TRUE )。否则将抛出异常。
可能的前趋
open_framegrabberopen_framegrabberOpenFramegrabberOpenFramegrabberOpenFramegrabberopen_framegrabber
可能的后继
grab_imagegrab_imageGrabImageGrabImageGrabImagegrab_image,
grab_datagrab_dataGrabDataGrabDataGrabDatagrab_data,
grab_image_startgrab_image_startGrabImageStartGrabImageStartGrabImageStartgrab_image_start,
grab_image_asyncgrab_image_asyncGrabImageAsyncGrabImageAsyncGrabImageAsyncgrab_image_async,
grab_data_asyncgrab_data_asyncGrabDataAsyncGrabDataAsyncGrabDataAsyncgrab_data_async,
get_framegrabber_paramget_framegrabber_paramGetFramegrabberParamGetFramegrabberParamGetFramegrabberParamget_framegrabber_param
另见
open_framegrabberopen_framegrabberOpenFramegrabberOpenFramegrabberOpenFramegrabberopen_framegrabber,
info_framegrabberinfo_framegrabberInfoFramegrabberInfoFramegrabberInfoFramegrabberinfo_framegrabber,
get_framegrabber_paramget_framegrabber_paramGetFramegrabberParamGetFramegrabberParamGetFramegrabberParamget_framegrabber_param
模块
基础