image_provider/
config.rs

1use std::path::PathBuf;
2
3use clap::Parser;
4use derive_builder::Builder;
5use fast_image_resize::{FilterType, ResizeAlg};
6use serde::Deserialize;
7
8#[derive(Debug, Clone, Deserialize, Parser, Builder)]
9#[builder(pattern = "owned")]
10pub struct ResizeConfig {
11
12    #[clap(long="resize-path", default_value = "." )]
13    pub path: PathBuf,
14
15    /// `lanczos3`  
16    /// `gaussian`  
17    /// `catmull-rom`  
18    /// `hamming`  
19    /// `mitchell`  
20    /// `bilinear`  
21    /// `box`  
22    #[clap(long="resize-filter-type", default_value = "lanczos3" )]
23    pub filter_type: String,
24
25    /// Slow <-
26    /// `super-sampling8x`  
27    /// `super-sampling4x`  
28    /// `super-sampling2x`  
29    /// `convolution`  
30    /// `interpolation`  
31    /// `nearest`  
32    /// -> Fast
33    /// (nearest will ignore filter_type)
34    #[clap(long="resize-algorithm", default_value = "interpolation" )]
35    pub algorithm: String,
36}
37
38impl ResizeConfig {
39    pub fn builder() -> ResizeConfigBuilder {
40        ResizeConfigBuilder {
41            path: Some(".".into()),
42            filter_type: Some("lanczos3".into()),
43            algorithm: Some("interpolation".into()),
44        }
45    }
46
47    pub fn resize_algorithm(&self) -> ResizeAlg {
48        let filter_type = match self.filter_type.as_str() {
49            "lanczos3" => FilterType::Lanczos3,
50            "gaussian" => FilterType::Gaussian,
51            "catmull-rom" => FilterType::CatmullRom,
52            "hamming" => FilterType::Hamming,
53            "mitchell" => FilterType::Mitchell,
54            "bilinear" => FilterType::Bilinear,
55            "box" => FilterType::Box,
56            _ => panic!("Unsupported filter type"),
57        };
58
59        match self.algorithm.as_str() {
60            "super-sampling8x" => ResizeAlg::SuperSampling(filter_type, 8),
61            "super-sampling4x" => ResizeAlg::SuperSampling(filter_type, 4),
62            "super-sampling2x" => ResizeAlg::SuperSampling(filter_type, 2),
63            "interpolation" => ResizeAlg::Interpolation(filter_type),
64            "convolution" => ResizeAlg::Convolution(filter_type),
65            "nearest" => ResizeAlg::Nearest,
66            _ => panic!("Unsupported resize algorithm"),
67        }
68    }
69}
image_provider/config.rs

image_provider/
config.rs
