opencv::core

Struct Context

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pub struct Context { /* private fields */ }

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impl Context

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pub fn default() -> Context

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pub fn new_with_type(dtype: i32) -> Result<Context>

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pub fn copy(c: &impl ContextTraitConst) -> Result<Context>

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pub fn copy_mut(c: Context) -> Context

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pub fn get_default(initialize: bool) -> Result<Context>

§C++ default parameters
  • initialize: true
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pub fn get_default_def() -> Result<Context>

§Note

This alternative version of Context::get_default function uses the following default values for its arguments:

  • initialize: true
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pub unsafe fn from_handle(context: *mut c_void) -> Result<Context>

§Parameters
  • context: OpenCL handle (cl_context). clRetainContext() is called on success
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pub fn from_device(device: &impl DeviceTraitConst) -> Result<Context>

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pub fn create(configuration: &str) -> Result<Context>

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impl Boxed for Context

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unsafe fn from_raw(ptr: <Context as OpenCVFromExtern>::ExternReceive) -> Self

Wrap the specified raw pointer Read more
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fn into_raw(self) -> <Context as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying raw pointer while consuming this wrapper. Read more
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fn as_raw(&self) -> <Context as OpenCVTypeExternContainer>::ExternSend

Return the underlying raw pointer. Read more
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fn as_raw_mut( &mut self, ) -> <Context as OpenCVTypeExternContainer>::ExternSendMut

Return the underlying mutable raw pointer Read more
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impl ContextTrait for Context

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fn as_raw_mut_Context(&mut self) -> *mut c_void

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fn set(&mut self, c: &impl ContextTraitConst) -> Result<()>

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fn set_1(&mut self, c: Context)

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fn create(&mut self) -> Result<bool>

@deprecated
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fn create_with_type(&mut self, dtype: i32) -> Result<bool>

@deprecated
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fn get_prog( &mut self, prog: &impl ProgramSourceTraitConst, buildopt: &str, errmsg: &mut String, ) -> Result<Program>

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fn unload_prog(&mut self, prog: &mut impl ProgramTrait) -> Result<()>

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fn set_use_svm(&mut self, enabled: bool) -> Result<()>

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fn release(&mut self) -> Result<()>

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impl ContextTraitConst for Context

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fn as_raw_Context(&self) -> *const c_void

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fn ndevices(&self) -> Result<size_t>

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fn device(&self, idx: size_t) -> Result<Device>

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fn ptr(&self) -> Result<*mut c_void>

Returns Read more
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fn get_opencl_context_property(&self, property_id: i32) -> Result<*mut c_void>

Get OpenCL context property specified on context creation Read more
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fn use_svm(&self) -> Result<bool>

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fn empty(&self) -> Result<bool>

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impl Debug for Context

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for Context

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fn default() -> Self

Forwards to infallible Self::default()

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impl Drop for Context

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fn drop(&mut self)

Executes the destructor for this type. Read more
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impl Send for Context

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<Mat> ModifyInplace for Mat
where Mat: Boxed,

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unsafe fn modify_inplace<Res>( &mut self, f: impl FnOnce(&Mat, &mut Mat) -> Res, ) -> Res

Helper function to call OpenCV functions that allow in-place modification of a Mat or another similar object. By passing a mutable reference to the Mat to this function your closure will get called with the read reference and a write references to the same Mat. This is unsafe in a general case as it leads to having non-exclusive mutable access to the internal data, but it can be useful for some performance sensitive operations. One example of an OpenCV function that allows such in-place modification is imgproc::threshold. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.