Struct nifti::volume::streamed::StreamedNiftiVolume
source · pub struct StreamedNiftiVolume<R> { /* private fields */ }
Expand description
A NIfTI-1 volume instance that is read slice by slice from a byte stream.
See the module-level documentation for more details.
Implementations§
source§impl StreamedNiftiVolume<BufReader<File>>
impl StreamedNiftiVolume<BufReader<File>>
sourcepub fn from_file<P>(path: P, header: &NiftiHeader) -> Result<Self>where
P: AsRef<Path>,
pub fn from_file<P>(path: P, header: &NiftiHeader) -> Result<Self>where P: AsRef<Path>,
Read a NIFTI volume from an uncompressed file. The header and expected byte order of the volume’s data must be known in advance. It is also expected that the file starts with the first voxels of the volume, not with the extensions.
source§impl<R> StreamedNiftiVolume<R>where
R: Read,
impl<R> StreamedNiftiVolume<R>where R: Read,
sourcepub fn from_reader(source: R, header: &NiftiHeader) -> Result<Self>
pub fn from_reader(source: R, header: &NiftiHeader) -> Result<Self>
Read a NIFTI volume from a stream of raw voxel data. The header and expected byte order of the volume’s data must be known in advance. It is also expected that the following bytes represent the first voxels of the volume (and not part of the extensions).
By default, the slice’s rank is the original volume’s rank minus 1.
sourcepub fn from_reader_rank(
source: R,
header: &NiftiHeader,
slice_rank: u16
) -> Result<Self>
pub fn from_reader_rank( source: R, header: &NiftiHeader, slice_rank: u16 ) -> Result<Self>
Read a NIFTI volume from a stream of data. The header and expected byte order of the volume’s data must be known in advance. It it also expected that the following bytes represent the first voxels of the volume (and not part of the extensions).
The slice rank defines how many dimensions each slice should have.
sourcepub fn slices_read(&self) -> usize
pub fn slices_read(&self) -> usize
Retrieve the number of slices already read
sourcepub fn slices_left(&self) -> usize
pub fn slices_left(&self) -> usize
Retrieve the number of slices left
sourcepub fn read_slice(&mut self) -> Result<InMemNiftiVolume>
pub fn read_slice(&mut self) -> Result<InMemNiftiVolume>
Read a volume slice from the data source, producing an in-memory sub-volume.
sourcepub fn read_slice_inline(&mut self, buffer: Vec<u8>) -> Result<InMemNiftiVolume>
pub fn read_slice_inline(&mut self, buffer: Vec<u8>) -> Result<InMemNiftiVolume>
Read a volume slice from the data source, producing an in-memory
sub-volume. This method reuses the given buffer
to avoid
reallocations. Any data that the buffer previously had is
discarded.
sourcepub fn next_inline(
&mut self,
buffer: Vec<u8>
) -> Option<Result<InMemNiftiVolume>>
pub fn next_inline( &mut self, buffer: Vec<u8> ) -> Option<Result<InMemNiftiVolume>>
Fetch the next slice while reusing a raw data buffer. This is the
streaming iterator equivalent of Iterator::next
. Once the output
volume has been used, the method into_raw_data
can be used to
recover the vector for the subsequent iteration.
sourcepub fn indexed(
&mut self
) -> impl Iterator<Item = Result<(Idx, InMemNiftiVolume)>> + '_
pub fn indexed( &mut self ) -> impl Iterator<Item = Result<(Idx, InMemNiftiVolume)>> + '_
Adapt the streamed volume to produce slice indices alongside the produced slices.
Example
let mut volume = get_volume();
for slice_pair in volume.indexed() {
let (idx, slice): (Idx, InMemNiftiVolume) = slice_pair?;
// use idx and slice
}
Trait Implementations§
source§impl<R: Debug> Debug for StreamedNiftiVolume<R>
impl<R: Debug> Debug for StreamedNiftiVolume<R>
source§impl<R> FromSource<R> for StreamedNiftiVolume<R>where
R: Read,
impl<R> FromSource<R> for StreamedNiftiVolume<R>where R: Read,
source§fn from_reader(
reader: R,
header: &NiftiHeader,
options: Self::Options
) -> Result<Self>
fn from_reader( reader: R, header: &NiftiHeader, options: Self::Options ) -> Result<Self>
source§impl<R> FromSourceOptions for StreamedNiftiVolume<R>
impl<R> FromSourceOptions for StreamedNiftiVolume<R>
source§impl<R> Iterator for StreamedNiftiVolume<R>where
R: Read,
impl<R> Iterator for StreamedNiftiVolume<R>where R: Read,
The iterator pattern in a streamed NIfTI volume calls the method
read_slice
on next
unless all slices have already been read from the
volume.
§type Item = Result<InMemNiftiVolume, NiftiError>
type Item = Result<InMemNiftiVolume, NiftiError>
source§fn next(&mut self) -> Option<Self::Item>
fn next(&mut self) -> Option<Self::Item>
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&mut self
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)source§impl<'a, R> NiftiVolume for &'a StreamedNiftiVolume<R>
impl<'a, R> NiftiVolume for &'a StreamedNiftiVolume<R>
source§fn dim(&self) -> &[u16]
fn dim(&self) -> &[u16]
dim[0]
and is clipped to the effective number of dimensions.source§fn dimensionality(&self) -> usize
fn dimensionality(&self) -> usize
dim[0]
field
(with byte swapping already applied).source§impl<R> NiftiVolume for StreamedNiftiVolume<R>
impl<R> NiftiVolume for StreamedNiftiVolume<R>
source§fn dim(&self) -> &[u16]
fn dim(&self) -> &[u16]
dim[0]
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fn dimensionality(&self) -> usize
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(with byte swapping already applied).Auto Trait Implementations§
impl<R> RefUnwindSafe for StreamedNiftiVolume<R>where R: RefUnwindSafe,
impl<R> Send for StreamedNiftiVolume<R>where R: Send,
impl<R> Sync for StreamedNiftiVolume<R>where R: Sync,
impl<R> Unpin for StreamedNiftiVolume<R>where R: Unpin,
impl<R> UnwindSafe for StreamedNiftiVolume<R>where R: UnwindSafe,
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self
from the equivalent element of its
superset. Read moresource§fn is_in_subset(&self) -> bool
fn is_in_subset(&self) -> bool
self
is actually part of its subset T
(and can be converted to it).source§fn to_subset_unchecked(&self) -> SS
fn to_subset_unchecked(&self) -> SS
self.to_subset
but without any property checks. Always succeeds.source§fn from_subset(element: &SS) -> SP
fn from_subset(element: &SS) -> SP
self
to the equivalent element of its superset.