Optional features

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "libcaesium"
-version = "0.9.3"
+version = "0.10.0"
 authors = ["Matteo Paonessa <matteo.paonessa@gmail.com>"]
 edition = "2021"
 categories = ["multimedia::images"]
@@ -22,17 +22,24 @@ repository = "https://github.com/Lymphatus/libcaesium"
 license = "Apache-2.0"
 
 [dependencies]
-mozjpeg-sys = "1.0.2"
+mozjpeg-sys = { version = "1.0.2", optional = true }
-oxipng = "6.0.1"
+oxipng = { version = "6.0.1", optional = true }
 libc = "0.2"
-gifsicle = "1.92.5"
+gifsicle = { version = "1.92.5", optional = true }
-webp = "0.2"
+webp = { version = "0.2", optional = true }
 infer = "0.9"
 image = { version = "0.24.3", default-features = false, features = ["jpeg", "png", "webp", "gif"] }
 img-parts = "0.3"
 bytes = "1.1"
-lodepng = "3.7"
+lodepng = { version = "3.7", optional = true }
-imagequant = {git = "https://github.com/Lymphatus/libimagequant", rev = "67f1686"}
+imagequant = {git = "https://github.com/Lymphatus/libimagequant", rev = "67f1686", optional = true}
+
+[features]
+default = ["jpg", "png", "webp", "gif"]
+jpg = ["dep:mozjpeg-sys"]
+png = ["dep:oxipng", "dep:lodepng", "dep:imagequant"]
+webp = ["dep:webp"]
+gif = ["dep:gifsicle"]
 
 [dev-dependencies]
 dssim = "3.2.0"

README.md

@@ -50,12 +50,10 @@ pub struct Parameters {
 #### png
 ```Rust
 pub struct Parameters {
-    pub oxipng: oxipng::Options,
     pub quality: u32,
     pub force_zopfli: bool
 }
 ```
-- `oxipng`: oxipng options. Should be left as default unless you want to do something advanced. Refer to [oxipng](https://github.com/shssoichiro/oxipng) for documentation.
 - `quality`: in a range from 0 to 100, the quality of the resulting image. Default `80`.
 - `force_zopfli`: if `optimization` is `true` and this option is also `true`, will use zopfli algorithm for compression, resulting in a smaller image, but it may take minutes to finish the process. Default `false`.
 

src/gif.rs

@@ -4,10 +4,6 @@ use std::os::raw::{c_int, c_void};
 
 use crate::CSParameters;
 
-pub struct Parameters {
-    pub quality: u32,
-}
-
 pub fn compress(
     input_path: String,
     output_path: String,

src/jpeg.rs

@@ -10,10 +10,6 @@ use std::{io, mem};
 use crate::resize::resize;
 use crate::CSParameters;
 
-pub struct Parameters {
-    pub quality: u32,
-}
-
 pub fn compress(
     input_path: String,
     output_path: String,

src/lib.rs

@@ -4,11 +4,15 @@ use std::os::raw::c_char;
 
 use crate::utils::get_filetype;
 
+#[cfg(feature = "gif")]
 mod gif;
+#[cfg(feature = "jpg")]
 mod jpeg;
+#[cfg(feature = "png")]
 mod png;
 mod resize;
 mod utils;
+#[cfg(feature = "webp")]
 mod webp;
 
 #[repr(C)]
@@ -30,29 +34,46 @@ pub struct CCSResult {
     pub error_message: *const c_char,
 }
 
+pub struct JpegParameters {
+    pub quality: u32,
+}
+
+pub struct PngParameters {
+    pub quality: u32,
+    pub force_zopfli: bool,
+}
+
+pub struct GifParameters {
+    pub quality: u32,
+}
+
+pub struct WebPParameters {
+    pub quality: u32,
+}
+
 pub struct CSParameters {
-    pub jpeg: jpeg::Parameters,
+    pub jpeg: JpegParameters,
-    pub png: png::Parameters,
+    pub png: PngParameters,
-    pub gif: gif::Parameters,
+    pub gif: GifParameters,
-    pub webp: webp::Parameters,
+    pub webp: WebPParameters,
     pub keep_metadata: bool,
     pub optimize: bool,
     pub width: u32,
     pub height: u32,
 }
 
-pub fn initialize_parameters() -> CSParameters {
-    let jpeg = jpeg::Parameters { quality: 80 };
 
-    let png = png::Parameters {
+pub fn initialize_parameters() -> CSParameters {
-        oxipng: oxipng::Options::default(),
+    let jpeg = JpegParameters { quality: 80 };
+
+    let png = PngParameters {
         quality: 80,
         force_zopfli: false,
     };
 
-    let gif = gif::Parameters { quality: 80 };
+    let gif = GifParameters { quality: 80 };
 
-    let webp = webp::Parameters { quality: 80 };
+    let webp = WebPParameters { quality: 80 };
 
     CSParameters {
         jpeg,
@@ -121,15 +142,19 @@ pub fn compress(
     let file_type = get_filetype(&input_path);
 
     match file_type {
+        #[cfg(feature = "jpg")]
         utils::SupportedFileTypes::Jpeg => {
             jpeg::compress(input_path, output_path, parameters)?;
         }
+        #[cfg(feature = "png")]
         utils::SupportedFileTypes::Png => {
             png::compress(input_path, output_path, parameters)?;
         }
+        #[cfg(feature = "gif")]
         utils::SupportedFileTypes::Gif => {
             gif::compress(input_path, output_path, parameters)?;
         }
+        #[cfg(feature = "webp")]
         utils::SupportedFileTypes::WebP => {
             webp::compress(input_path, output_path, parameters)?;
         }

src/png.rs

@@ -9,12 +9,6 @@ use std::{fs, io};
 use crate::resize::resize_image;
 use crate::CSParameters;
 
-pub struct Parameters {
-    pub oxipng: oxipng::Options,
-    pub quality: u32,
-    pub force_zopfli: bool,
-}
-
 pub fn compress(
     input_path: String,
     output_path: String,
@@ -93,7 +87,7 @@ fn lossy(input_path: String, parameters: CSParameters) -> Result<Vec<u8>, io::Er
 
 fn lossless(input_path: String, parameters: CSParameters) -> Result<Vec<u8>, io::Error> {
     let in_file = fs::read(input_path)?;
-    let mut oxipng_options = parameters.png.oxipng;
+    let mut oxipng_options = oxipng::Options::default();
     if !parameters.keep_metadata {
         oxipng_options.strip = oxipng::Headers::Safe;
     }

src/resize.rs

@@ -5,6 +5,7 @@ use image::DynamicImage;
 use std::io;
 use std::io::Cursor;
 
+#[allow(dead_code)]
 pub fn resize(
     image_buffer: Vec<u8>,
     width: u32,
@@ -31,6 +32,7 @@ pub fn resize(
     Ok(resized_file)
 }
 
+#[allow(dead_code)]
 pub fn resize_image(
     image: DynamicImage,
     width: u32,
@@ -42,6 +44,7 @@ pub fn resize_image(
     Ok(resized_image)
 }
 
+#[allow(dead_code)]
 fn compute_dimensions(
     original_width: u32,
     original_height: u32,

src/webp.rs

@@ -6,10 +6,6 @@ use std::ops::Deref;
 use crate::resize::resize_image;
 use crate::CSParameters;
 
-pub struct Parameters {
-    pub quality: u32,
-}
-
 pub fn compress(
     input_path: String,
     output_path: String,