#[repr(transparent)]pub struct Buffer { /* private fields */ }
Implementations§
source§impl Buffer
impl Buffer
sourcepub fn new_allocate(size: usize) -> Buffer
pub fn new_allocate(size: usize) -> Buffer
sourcepub fn chunk_data(&self, chunk_id: u64) -> Vec<u8>
pub fn chunk_data(&self, chunk_id: u64) -> Vec<u8>
sourcepub fn frame_id(&self) -> u64
pub fn frame_id(&self) -> u64
Gets the buffer frame id. For GigEVision devices, 0 is an invalid value.
Returns
frame id, 0 on error.
sourcepub fn image_height(&self) -> i32
pub fn image_height(&self) -> i32
Gets the image width. This function must only be called on buffer containing a BufferPayloadType::Image
payload.
Returns
image height, in pixels.
sourcepub fn image_pixel_format(&self) -> PixelFormat
pub fn image_pixel_format(&self) -> PixelFormat
Gets the image pixel format. This function must only be called on buffer containing a BufferPayloadType::Image
payload.
Returns
image pixel format.
sourcepub fn image_width(&self) -> i32
pub fn image_width(&self) -> i32
Gets the image width. This function must only be called on buffer containing a BufferPayloadType::Image
payload.
Returns
image width, in pixels.
sourcepub fn image_x(&self) -> i32
pub fn image_x(&self) -> i32
Gets the image x offset. This function must only be called on buffer containing a BufferPayloadType::Image
payload.
Returns
image x offset, in pixels.
sourcepub fn image_y(&self) -> i32
pub fn image_y(&self) -> i32
Gets the image y offset. This function must only be called on buffer containing a BufferPayloadType::Image
payload.
Returns
image y offset, in pixels.
sourcepub fn payload_type(&self) -> BufferPayloadType
pub fn payload_type(&self) -> BufferPayloadType
sourcepub fn status(&self) -> BufferStatus
pub fn status(&self) -> BufferStatus
sourcepub fn system_timestamp(&self) -> u64
pub fn system_timestamp(&self) -> u64
Gets the system timestamp for when the frame was received. Expressed in nanoseconds.
Returns
buffer system timestamp, in nanoseconds.
sourcepub fn timestamp(&self) -> u64
pub fn timestamp(&self) -> u64
Gets the buffer camera timestamp, expressed as nanoseconds. Not all devices
provide reliable timestamp, which means sometimes its better to rely on the
buffer completion host local time, or to use
system_timestamp()
.
Returns
buffer timestamp, in nanoseconds.
sourcepub fn has_chunks(&self) -> bool
pub fn has_chunks(&self) -> bool
sourcepub fn set_frame_id(&self, frame_id: u64)
Available on crate feature v0_8_3
only.
pub fn set_frame_id(&self, frame_id: u64)
v0_8_3
only.sourcepub fn set_system_timestamp(&self, timestamp_ns: u64)
pub fn set_system_timestamp(&self, timestamp_ns: u64)
Sets the system timestamp for when the frame was received. Expressed in nanoseconds.
timestamp_ns
a timestamp, expressed as nanoseconds
sourcepub fn set_timestamp(&self, timestamp_ns: u64)
pub fn set_timestamp(&self, timestamp_ns: u64)
Sets the buffer timestamp, which allows to override the timpestamp set by the camera, which in some case is incorrect.
timestamp_ns
a timestamp, expressed as nanoseconds
source§impl Buffer
impl Buffer
sourcepub fn new_preallocated_owned<F: FnOnce()>(
data: *mut u8,
len: usize,
destroy_callback: F
) -> Self
pub fn new_preallocated_owned<F: FnOnce()>( data: *mut u8, len: usize, destroy_callback: F ) -> Self
Create an Aravis buffer that owns its own data from a pre-allocated raw buffer.
The destroy_callback
argument is called to destroy the buffer, and should free the resources associated with the buffer.
Safety
The pointer and length parameter must indicate a valid memory region where Aravis can safely write data to until the destroy_callback
is called.
sourcepub unsafe fn new_preallocated(data: *mut u8, len: usize) -> Self
👎Deprecated: Use new_preallocated_borrowed instead
pub unsafe fn new_preallocated(data: *mut u8, len: usize) -> Self
Create an Aravis buffer from a pre-allocated raw buffer.
The created buffer has no registered user data or destroy callback, so management of the underlying buffer has to be done externally. The buffer can be identified later when it is returned by a stream only byt the data pointer.
Safety
The resulting buffer borrows the data, but it carries no lifetime. The user has to ensure the buffer stays valid.
sourcepub unsafe fn new_preallocated_borrowed(data: *mut u8, len: usize) -> Self
pub unsafe fn new_preallocated_borrowed(data: *mut u8, len: usize) -> Self
Create an Aravis buffer from a pre-allocated raw buffer.
The created buffer has no registered user data or destroy callback, so management of the underlying buffer has to be done externally. The buffer can be identified later when it is returned by a stream only by the data pointer.
Safety
The pointer and length parameter must indicate a valid memory region where Aravis can safely write data to until the buffer is dropped.
The created buffer borrows the memory buffer, but it carries no lifetime.
See Self::new_preallocated_owned
for a safer (but still unsafe) alternative.
sourcepub fn new_leaked_box(len: usize) -> Self
pub fn new_leaked_box(len: usize) -> Self
Create a new buffer backed by a leaked Box<[u8]>
.
The buffer can later be turned into an image using [Self::into_image]
.
If the buffer is dropped without taking ownership of the data again, the memory is leaked.
sourcepub fn new_leaked_image(
format: PixelFormat,
width: usize,
height: usize
) -> Self
pub fn new_leaked_image( format: PixelFormat, width: usize, height: usize ) -> Self
Create a new buffer for an image of the specified format and dimensions, backed by a leaked Box<[u8]>
.
The buffer can later be turned into an image using [Self::into_image]
.
If the buffer is dropped without taking ownership of the data again, the memory is leaked.
sourcepub fn data(&self) -> (*mut u8, usize)
pub fn data(&self) -> (*mut u8, usize)
Get a pointer to the raw data and the length of the buffer.
sourcepub unsafe fn into_image(self) -> Result<DynamicImage, ImageError>
pub unsafe fn into_image(self) -> Result<DynamicImage, ImageError>
Convert the buffer into an image.
Safety
This function assumes the buffer is backed by a leaked box,
such as created by Buffer::new_leaked_box
.
This function takes ownership of the leaked box, so the memory will be freed when the resulting image is dropped.
Trait Implementations§
source§impl HasParamSpec for Buffer
impl HasParamSpec for Buffer
source§impl Ord for Buffer
impl Ord for Buffer
source§impl<OT: ObjectType> PartialEq<OT> for Buffer
impl<OT: ObjectType> PartialEq<OT> for Buffer
source§impl<OT: ObjectType> PartialOrd<OT> for Buffer
impl<OT: ObjectType> PartialOrd<OT> for Buffer
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moresource§impl StaticType for Buffer
impl StaticType for Buffer
source§fn static_type() -> Type
fn static_type() -> Type
Self
.impl Eq for Buffer
impl Send for Buffer
Auto Trait Implementations§
impl RefUnwindSafe for Buffer
impl !Sync for Buffer
impl Unpin for Buffer
impl UnwindSafe for Buffer
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
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T: ObjectType,
impl<T> Cast for Twhere T: ObjectType,
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T: ObjectType,
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T
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T
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args: &[Value]
) -> Option<Value>
fn emit_with_details_and_values( &self, signal_id: SignalId, details: Quark, args: &[Value] ) -> Option<Value>
source§fn disconnect(&self, handler_id: SignalHandlerId)
fn disconnect(&self, handler_id: SignalHandlerId)
source§fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec) + Send + Sync + 'static,
fn connect_notify<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + Send + Sync + 'static,
notify
signal of the object. Read moresource§fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec) + 'static,
fn connect_notify_local<F>(&self, name: Option<&str>, f: F) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec) + 'static,
notify
signal of the object. Read moresource§unsafe fn connect_notify_unsafe<F>(
&self,
name: Option<&str>,
f: F
) -> SignalHandlerIdwhere
F: Fn(&T, &ParamSpec),
unsafe fn connect_notify_unsafe<F>( &self, name: Option<&str>, f: F ) -> SignalHandlerIdwhere F: Fn(&T, &ParamSpec),
notify
signal of the object. Read moresource§fn notify(&self, property_name: &str)
fn notify(&self, property_name: &str)
source§fn notify_by_pspec(&self, pspec: &ParamSpec)
fn notify_by_pspec(&self, pspec: &ParamSpec)
source§fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>where
F: FnOnce() + Send + 'static,
fn add_weak_ref_notify<F>(&self, f: F) -> WeakRefNotify<T>where F: FnOnce() + Send + 'static,
source§fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>where
F: FnOnce() + 'static,
fn add_weak_ref_notify_local<F>(&self, f: F) -> WeakRefNotify<T>where F: FnOnce() + 'static,
source§fn bind_property<'f, 't, O, 'a>(
&'a self,
source_property: &'a str,
target: &'a O,
target_property: &'a str
) -> BindingBuilder<'a, 'f, 't>where
O: ObjectType,
fn bind_property<'f, 't, O, 'a>( &'a self, source_property: &'a str, target: &'a O, target_property: &'a str ) -> BindingBuilder<'a, 'f, 't>where O: ObjectType,
source§unsafe fn run_dispose(&self)
unsafe fn run_dispose(&self)
§impl<T> Pointable for T
impl<T> Pointable for T
source§impl<T> PropertyGet for Twhere
T: HasParamSpec,
impl<T> PropertyGet for Twhere T: HasParamSpec,
source§impl<T> StaticTypeExt for Twhere
T: StaticType,
impl<T> StaticTypeExt for Twhere T: StaticType,
source§fn ensure_type()
fn ensure_type()
source§impl<T> ToSendValue for Twhere
T: Send + ToValue + ?Sized,
impl<T> ToSendValue for Twhere T: Send + ToValue + ?Sized,
source§fn to_send_value(&self) -> SendValue
fn to_send_value(&self) -> SendValue
SendValue
clone of self
.