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Disable default features from imageproc dependency #89

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Disable default features from imageproc dependency #89

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456f524
remove default-features from imageproc dependency
JasperDeSutter Jun 5, 2026
29b25b4
add rayon feature
JasperDeSutter Jun 5, 2026
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7 changes: 6 additions & 1 deletion Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,7 @@ uriparse = {version = "0.6", optional = true}
chrono = { version = "0.4", default-features = false, features = ["clock", "std", "oldtime"] }
chrono-tz = {version = "0.10", optional = true}
image = {version = "=0.25.8", optional = true, default-features = false}
imageproc = {version = "0.25", optional = true}
imageproc = {version = "0.25", optional = true, default-features = false}
unicode-segmentation = "1.13"
codepage-437 = {version = "0.1", optional = true}
rxing-one-d-proc-derive = {version = "0.9", path ="./crates/one-d-proc-derive", optional = true}
Expand All @@ -45,6 +45,7 @@ default = [
"image",
"client_support",
"image_formats",
"rayon",
"serde",
"encoding_rs",
"encoders",
Expand Down Expand Up @@ -74,6 +75,10 @@ image_formats = [
"image/ff",
]

#/// Enable rayon-based parallelism inside imageproc operations (binarizers, filters).
#/// Off by default; correctness is unaffected, this only speeds up image processing.
rayon = ["image", "imageproc/rayon"]

#/// Enable barcode encoders
encoders = []

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3 changes: 2 additions & 1 deletion README.md
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Expand Up @@ -52,6 +52,7 @@ Please note that currently UPC/EAN Extension 2/5 is supported.
The following feature flags are available:
* `image`: Enable features required for image manipulation and reading.
* `image_formats`: Enabled by default. Compile all `image` crate image format support options.
* `rayon`: Enabled by default. Turns on `rayon`-based parallelism inside the `imageproc` operations rxing uses (binarizers, filters).
* `allow_forced_iso_ied_18004_compliance`: Allows the ability to force ISO/IED 18004 compliance. Leave disabled unless specificially needed.
* `client_support`: Enable the client library. This is used for parsing the result of barcodes.
* `svg_write`: Enable support for writing SVG files
Expand All @@ -66,7 +67,7 @@ The following feature flags are available:
* `encoding_rs`: Enabled by default. Uses the modern `encoding_rs` crate for high-performance, WHATWG-compliant character encoding support.
* `legacy_encoding`: Provides the original encoding behavior using the legacy `encoding` crate. Use this if you require exact compatibility with older versions or specific non-standard character mappings.

The default feature set includes the `image`, `client_support`, `image_formats`, and `encoding_rs` features mentioned above.
The default feature set includes the `image`, `client_support`, `image_formats`, `rayon`, and `encoding_rs` features mentioned above.

## Incomplete
The library has only been thurougly tested with the `BufferedImageLuminanceSource` source format. Using any other
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