pub enum Error {
TooLarge,
NormalFormRequired(NormalForm),
ChannelCountMismatch(u8, u8),
WrongColor(ColorType),
}
Expand description
Denotes invalid flat sample buffers when trying to convert to stricter types.
The biggest use case being ImageBuffer
which expects closely packed
samples in a row major matrix representation. But this error type may be
resused for other import functions. A more versatile user may also try to
correct the underlying representation depending on the error variant.
The represented image was too large.
The optional value denotes a possibly accepted maximal bound.
The represented image can not use this representation.
Has an additional value of the normalized form that would be accepted.
The color format did not match the channel count.
In some cases you might be able to fix this by lowering the reported pixel count of the
buffer without touching the strides.
In very special circumstances you may do the opposite. This is VERY dangerous but not
directly memory unsafe although that will likely alias pixels. One scenario is when you
want to construct an Rgba
image but have only 3 bytes per pixel and for some reason don’t
care about the value of the alpha channel even though you need Rgba
.
Deprecated - ChannelCountMismatch is used instead
Performs copy-assignment from
source
.
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Formats the value using the given formatter.
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Formats the value using the given formatter.
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The lower-level source of this error, if any.
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👎Deprecated since 1.42.0: use the Display impl or to_string()
👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
🔬This is a nightly-only experimental API. (error_generic_member_access
)
Provides type based access to context intended for error reports.
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Converts to this type from the input type.
This method tests for self
and other
values to be equal, and is used
by ==
.
This method tests for !=
. The default implementation is almost always
sufficient, and should not be overridden without very good reason.
Immutably borrows from an owned value.
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Mutably borrows from an owned value.
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Returns the argument unchanged.
Calls U::from(self)
.
That is, this conversion is whatever the implementation of
From<T> for U
chooses to do.
The alignment of pointer.
The type for initializers.
Initializes a with the given initializer.
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Mutably dereferences the given pointer.
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Drops the object pointed to by the given pointer.
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The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning.
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Uses borrowed data to replace owned data, usually by cloning.
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Converts the given value to a
String
.
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The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.