Adding large folders

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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/newkirk/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/v_frame-0.3.9/src/frame.rs`."><title>frame.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="v_frame" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">v_frame/</div>frame.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-2"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="comment">// Copyright (c) 2018-2020, The rav1e contributors. All rights reserved
<a href=#2 id=2 data-nosnippet>2</a>//
<a href=#3 id=3 data-nosnippet>3</a>// This source code is subject to the terms of the BSD 2 Clause License and
<a href=#4 id=4 data-nosnippet>4</a>// the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
<a href=#5 id=5 data-nosnippet>5</a>// was not distributed with this source code in the LICENSE file, you can
<a href=#6 id=6 data-nosnippet>6</a>// obtain it at www.aomedia.org/license/software. If the Alliance for Open
<a href=#7 id=7 data-nosnippet>7</a>// Media Patent License 1.0 was not distributed with this source code in the
<a href=#8 id=8 data-nosnippet>8</a>// PATENTS file, you can obtain it at www.aomedia.org/license/patent.
<a href=#9 id=9 data-nosnippet>9</a>
<a href=#10 id=10 data-nosnippet>10</a></span><span class="kw">use </span><span class="kw">crate</span>::math::<span class="kw-2">*</span>;
<a href=#11 id=11 data-nosnippet>11</a><span class="kw">use </span><span class="kw">crate</span>::pixel::<span class="kw-2">*</span>;
<a href=#12 id=12 data-nosnippet>12</a><span class="kw">use </span><span class="kw">crate</span>::plane::<span class="kw-2">*</span>;
<a href=#13 id=13 data-nosnippet>13</a>
<a href=#14 id=14 data-nosnippet>14</a><span class="attr">#[cfg(feature = <span class="string">"serialize"</span>)]
<a href=#15 id=15 data-nosnippet>15</a></span><span class="kw">use </span>serde::{Deserialize, Serialize};
<a href=#16 id=16 data-nosnippet>16</a>
<a href=#17 id=17 data-nosnippet>17</a><span class="doccomment">/// Represents a raw video frame
<a href=#18 id=18 data-nosnippet>18</a></span><span class="attr">#[derive(Debug, Clone, Eq, PartialEq)]
<a href=#19 id=19 data-nosnippet>19</a>#[cfg_attr(feature = <span class="string">"serialize"</span>, derive(Serialize, Deserialize))]
<a href=#20 id=20 data-nosnippet>20</a></span><span class="kw">pub struct </span>Frame&lt;T: Pixel&gt; {
<a href=#21 id=21 data-nosnippet>21</a> <span class="doccomment">/// Planes constituting the frame.
<a href=#22 id=22 data-nosnippet>22</a> </span><span class="kw">pub </span>planes: [Plane&lt;T&gt;; <span class="number">3</span>],
<a href=#23 id=23 data-nosnippet>23</a>}
<a href=#24 id=24 data-nosnippet>24</a>
<a href=#25 id=25 data-nosnippet>25</a><span class="kw">impl</span>&lt;T: Pixel&gt; Frame&lt;T&gt; {
<a href=#26 id=26 data-nosnippet>26</a> <span class="doccomment">/// Creates a new frame with the given parameters.
<a href=#27 id=27 data-nosnippet>27</a> ///
<a href=#28 id=28 data-nosnippet>28</a> /// Allocates data for the planes.
<a href=#29 id=29 data-nosnippet>29</a> </span><span class="kw">pub fn </span>new_with_padding(
<a href=#30 id=30 data-nosnippet>30</a> width: usize,
<a href=#31 id=31 data-nosnippet>31</a> height: usize,
<a href=#32 id=32 data-nosnippet>32</a> chroma_sampling: ChromaSampling,
<a href=#33 id=33 data-nosnippet>33</a> luma_padding: usize,
<a href=#34 id=34 data-nosnippet>34</a> ) -&gt; <span class="self">Self </span>{
<a href=#35 id=35 data-nosnippet>35</a> <span class="kw">let </span>luma_width = width.align_power_of_two(<span class="number">3</span>);
<a href=#36 id=36 data-nosnippet>36</a> <span class="kw">let </span>luma_height = height.align_power_of_two(<span class="number">3</span>);
<a href=#37 id=37 data-nosnippet>37</a>
<a href=#38 id=38 data-nosnippet>38</a> <span class="kw">let </span>(chroma_decimation_x, chroma_decimation_y) =
<a href=#39 id=39 data-nosnippet>39</a> chroma_sampling.get_decimation().unwrap_or((<span class="number">0</span>, <span class="number">0</span>));
<a href=#40 id=40 data-nosnippet>40</a> <span class="kw">let </span>(chroma_width, chroma_height) =
<a href=#41 id=41 data-nosnippet>41</a> chroma_sampling.get_chroma_dimensions(luma_width, luma_height);
<a href=#42 id=42 data-nosnippet>42</a> <span class="kw">let </span>chroma_padding_x = luma_padding &gt;&gt; chroma_decimation_x;
<a href=#43 id=43 data-nosnippet>43</a> <span class="kw">let </span>chroma_padding_y = luma_padding &gt;&gt; chroma_decimation_y;
<a href=#44 id=44 data-nosnippet>44</a>
<a href=#45 id=45 data-nosnippet>45</a> Frame {
<a href=#46 id=46 data-nosnippet>46</a> planes: [
<a href=#47 id=47 data-nosnippet>47</a> Plane::new(luma_width, luma_height, <span class="number">0</span>, <span class="number">0</span>, luma_padding, luma_padding),
<a href=#48 id=48 data-nosnippet>48</a> Plane::new(
<a href=#49 id=49 data-nosnippet>49</a> chroma_width,
<a href=#50 id=50 data-nosnippet>50</a> chroma_height,
<a href=#51 id=51 data-nosnippet>51</a> chroma_decimation_x,
<a href=#52 id=52 data-nosnippet>52</a> chroma_decimation_y,
<a href=#53 id=53 data-nosnippet>53</a> chroma_padding_x,
<a href=#54 id=54 data-nosnippet>54</a> chroma_padding_y,
<a href=#55 id=55 data-nosnippet>55</a> ),
<a href=#56 id=56 data-nosnippet>56</a> Plane::new(
<a href=#57 id=57 data-nosnippet>57</a> chroma_width,
<a href=#58 id=58 data-nosnippet>58</a> chroma_height,
<a href=#59 id=59 data-nosnippet>59</a> chroma_decimation_x,
<a href=#60 id=60 data-nosnippet>60</a> chroma_decimation_y,
<a href=#61 id=61 data-nosnippet>61</a> chroma_padding_x,
<a href=#62 id=62 data-nosnippet>62</a> chroma_padding_y,
<a href=#63 id=63 data-nosnippet>63</a> ),
<a href=#64 id=64 data-nosnippet>64</a> ],
<a href=#65 id=65 data-nosnippet>65</a> }
<a href=#66 id=66 data-nosnippet>66</a> }
<a href=#67 id=67 data-nosnippet>67</a>}
</code></pre></div></section></main></body></html>
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/newkirk/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/v_frame-0.3.9/src/lib.rs`."><title>lib.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="v_frame" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">v_frame/</div>lib.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-2"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="comment">// Copyright (c) 2020, The rav1e contributors. All rights reserved
<a href=#2 id=2 data-nosnippet>2</a>//
<a href=#3 id=3 data-nosnippet>3</a>// This source code is subject to the terms of the BSD 2 Clause License and
<a href=#4 id=4 data-nosnippet>4</a>// the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
<a href=#5 id=5 data-nosnippet>5</a>// was not distributed with this source code in the LICENSE file, you can
<a href=#6 id=6 data-nosnippet>6</a>// obtain it at www.aomedia.org/license/software. If the Alliance for Open
<a href=#7 id=7 data-nosnippet>7</a>// Media Patent License 1.0 was not distributed with this source code in the
<a href=#8 id=8 data-nosnippet>8</a>// PATENTS file, you can obtain it at www.aomedia.org/license/patent.
<a href=#9 id=9 data-nosnippet>9</a>
<a href=#10 id=10 data-nosnippet>10</a>// Safety lints
<a href=#11 id=11 data-nosnippet>11</a></span><span class="attr">#![deny(bare_trait_objects)]
<a href=#12 id=12 data-nosnippet>12</a>#![deny(clippy::as_ptr_cast_mut)]
<a href=#13 id=13 data-nosnippet>13</a>#![deny(clippy::large_stack_arrays)]
<a href=#14 id=14 data-nosnippet>14</a></span><span class="comment">// Performance lints
<a href=#15 id=15 data-nosnippet>15</a></span><span class="attr">#![warn(clippy::inefficient_to_string)]
<a href=#16 id=16 data-nosnippet>16</a>#![warn(clippy::invalid_upcast_comparisons)]
<a href=#17 id=17 data-nosnippet>17</a>#![warn(clippy::iter_with_drain)]
<a href=#18 id=18 data-nosnippet>18</a>#![warn(clippy::linkedlist)]
<a href=#19 id=19 data-nosnippet>19</a>#![warn(clippy::mutex_integer)]
<a href=#20 id=20 data-nosnippet>20</a>#![warn(clippy::naive_bytecount)]
<a href=#21 id=21 data-nosnippet>21</a>#![warn(clippy::needless_bitwise_bool)]
<a href=#22 id=22 data-nosnippet>22</a>#![warn(clippy::needless_collect)]
<a href=#23 id=23 data-nosnippet>23</a>#![warn(clippy::or_fun_call)]
<a href=#24 id=24 data-nosnippet>24</a>#![warn(clippy::stable_sort_primitive)]
<a href=#25 id=25 data-nosnippet>25</a>#![warn(clippy::suboptimal_flops)]
<a href=#26 id=26 data-nosnippet>26</a>#![warn(clippy::trivial_regex)]
<a href=#27 id=27 data-nosnippet>27</a>#![warn(clippy::trivially_copy_pass_by_ref)]
<a href=#28 id=28 data-nosnippet>28</a>#![warn(clippy::unnecessary_join)]
<a href=#29 id=29 data-nosnippet>29</a>#![warn(clippy::unused_async)]
<a href=#30 id=30 data-nosnippet>30</a>#![warn(clippy::zero_sized_map_values)]
<a href=#31 id=31 data-nosnippet>31</a></span><span class="comment">// Correctness lints
<a href=#32 id=32 data-nosnippet>32</a></span><span class="attr">#![deny(clippy::case_sensitive_file_extension_comparisons)]
<a href=#33 id=33 data-nosnippet>33</a>#![deny(clippy::copy_iterator)]
<a href=#34 id=34 data-nosnippet>34</a>#![deny(clippy::expl_impl_clone_on_copy)]
<a href=#35 id=35 data-nosnippet>35</a>#![deny(clippy::float_cmp)]
<a href=#36 id=36 data-nosnippet>36</a>#![warn(clippy::imprecise_flops)]
<a href=#37 id=37 data-nosnippet>37</a>#![deny(clippy::manual_instant_elapsed)]
<a href=#38 id=38 data-nosnippet>38</a>#![deny(clippy::mem_forget)]
<a href=#39 id=39 data-nosnippet>39</a>#![deny(clippy::path_buf_push_overwrite)]
<a href=#40 id=40 data-nosnippet>40</a>#![deny(clippy::same_functions_in_if_condition)]
<a href=#41 id=41 data-nosnippet>41</a>#![deny(clippy::unchecked_duration_subtraction)]
<a href=#42 id=42 data-nosnippet>42</a>#![deny(clippy::unicode_not_nfc)]
<a href=#43 id=43 data-nosnippet>43</a></span><span class="comment">// Clarity/formatting lints
<a href=#44 id=44 data-nosnippet>44</a></span><span class="attr">#![warn(clippy::checked_conversions)]
<a href=#45 id=45 data-nosnippet>45</a>#![warn(clippy::derive_partial_eq_without_eq)]
<a href=#46 id=46 data-nosnippet>46</a>#![allow(clippy::enum_variant_names)]
<a href=#47 id=47 data-nosnippet>47</a>#![warn(clippy::explicit_deref_methods)]
<a href=#48 id=48 data-nosnippet>48</a>#![warn(clippy::filter_map_next)]
<a href=#49 id=49 data-nosnippet>49</a>#![warn(clippy::flat_map_option)]
<a href=#50 id=50 data-nosnippet>50</a>#![warn(clippy::fn_params_excessive_bools)]
<a href=#51 id=51 data-nosnippet>51</a>#![warn(clippy::implicit_clone)]
<a href=#52 id=52 data-nosnippet>52</a>#![warn(clippy::iter_not_returning_iterator)]
<a href=#53 id=53 data-nosnippet>53</a>#![warn(clippy::iter_on_empty_collections)]
<a href=#54 id=54 data-nosnippet>54</a>#![warn(clippy::macro_use_imports)]
<a href=#55 id=55 data-nosnippet>55</a>#![warn(clippy::manual_clamp)]
<a href=#56 id=56 data-nosnippet>56</a>#![warn(clippy::manual_let_else)]
<a href=#57 id=57 data-nosnippet>57</a>#![warn(clippy::manual_ok_or)]
<a href=#58 id=58 data-nosnippet>58</a>#![warn(clippy::manual_string_new)]
<a href=#59 id=59 data-nosnippet>59</a>#![warn(clippy::map_flatten)]
<a href=#60 id=60 data-nosnippet>60</a>#![warn(clippy::match_bool)]
<a href=#61 id=61 data-nosnippet>61</a>#![warn(clippy::mut_mut)]
<a href=#62 id=62 data-nosnippet>62</a>#![warn(clippy::needless_borrow)]
<a href=#63 id=63 data-nosnippet>63</a>#![warn(clippy::needless_continue)]
<a href=#64 id=64 data-nosnippet>64</a>#![warn(clippy::range_minus_one)]
<a href=#65 id=65 data-nosnippet>65</a>#![warn(clippy::range_plus_one)]
<a href=#66 id=66 data-nosnippet>66</a>#![warn(clippy::ref_binding_to_reference)]
<a href=#67 id=67 data-nosnippet>67</a>#![warn(clippy::ref_option_ref)]
<a href=#68 id=68 data-nosnippet>68</a>#![warn(clippy::trait_duplication_in_bounds)]
<a href=#69 id=69 data-nosnippet>69</a>#![warn(clippy::unused_peekable)]
<a href=#70 id=70 data-nosnippet>70</a>#![warn(clippy::unused_rounding)]
<a href=#71 id=71 data-nosnippet>71</a>#![warn(clippy::unused_self)]
<a href=#72 id=72 data-nosnippet>72</a>#![allow(clippy::upper_case_acronyms)]
<a href=#73 id=73 data-nosnippet>73</a>#![warn(clippy::verbose_bit_mask)]
<a href=#74 id=74 data-nosnippet>74</a>#![warn(clippy::verbose_file_reads)]
<a href=#75 id=75 data-nosnippet>75</a></span><span class="comment">// Documentation lints
<a href=#76 id=76 data-nosnippet>76</a></span><span class="attr">#![warn(clippy::doc_link_with_quotes)]
<a href=#77 id=77 data-nosnippet>77</a>#![warn(clippy::doc_markdown)]
<a href=#78 id=78 data-nosnippet>78</a>#![warn(clippy::missing_errors_doc)]
<a href=#79 id=79 data-nosnippet>79</a>#![warn(clippy::missing_panics_doc)]
<a href=#80 id=80 data-nosnippet>80</a>
<a href=#81 id=81 data-nosnippet>81</a></span><span class="kw">pub mod </span>frame;
<a href=#82 id=82 data-nosnippet>82</a><span class="kw">pub mod </span>math;
<a href=#83 id=83 data-nosnippet>83</a><span class="kw">pub mod </span>pixel;
<a href=#84 id=84 data-nosnippet>84</a><span class="kw">pub mod </span>plane;
<a href=#85 id=85 data-nosnippet>85</a>
<a href=#86 id=86 data-nosnippet>86</a><span class="kw">pub mod </span>prelude {
<a href=#87 id=87 data-nosnippet>87</a> <span class="kw">pub use </span><span class="kw">crate</span>::math::<span class="kw-2">*</span>;
<a href=#88 id=88 data-nosnippet>88</a> <span class="kw">pub use </span><span class="kw">crate</span>::pixel::<span class="kw-2">*</span>;
<a href=#89 id=89 data-nosnippet>89</a>}
</code></pre></div></section></main></body></html>
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/newkirk/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/v_frame-0.3.9/src/math.rs`."><title>math.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="v_frame" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">v_frame/</div>math.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="comment">// Copyright (c) 2017-2020, The rav1e contributors. All rights reserved
<a href=#2 id=2 data-nosnippet>2</a>//
<a href=#3 id=3 data-nosnippet>3</a>// This source code is subject to the terms of the BSD 2 Clause License and
<a href=#4 id=4 data-nosnippet>4</a>// the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
<a href=#5 id=5 data-nosnippet>5</a>// was not distributed with this source code in the LICENSE file, you can
<a href=#6 id=6 data-nosnippet>6</a>// obtain it at www.aomedia.org/license/software. If the Alliance for Open
<a href=#7 id=7 data-nosnippet>7</a>// Media Patent License 1.0 was not distributed with this source code in the
<a href=#8 id=8 data-nosnippet>8</a>// PATENTS file, you can obtain it at www.aomedia.org/license/patent.
<a href=#9 id=9 data-nosnippet>9</a>
<a href=#10 id=10 data-nosnippet>10</a></span><span class="kw">use </span>num_traits::PrimInt;
<a href=#11 id=11 data-nosnippet>11</a><span class="kw">use </span>std::mem::size_of;
<a href=#12 id=12 data-nosnippet>12</a>
<a href=#13 id=13 data-nosnippet>13</a><span class="kw">pub trait </span>Fixed {
<a href=#14 id=14 data-nosnippet>14</a> <span class="kw">fn </span>floor_log2(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize;
<a href=#15 id=15 data-nosnippet>15</a> <span class="kw">fn </span>ceil_log2(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize;
<a href=#16 id=16 data-nosnippet>16</a> <span class="kw">fn </span>align_power_of_two(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize;
<a href=#17 id=17 data-nosnippet>17</a> <span class="kw">fn </span>align_power_of_two_and_shift(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize;
<a href=#18 id=18 data-nosnippet>18</a>}
<a href=#19 id=19 data-nosnippet>19</a>
<a href=#20 id=20 data-nosnippet>20</a><span class="kw">impl </span>Fixed <span class="kw">for </span>usize {
<a href=#21 id=21 data-nosnippet>21</a> <span class="attr">#[inline]
<a href=#22 id=22 data-nosnippet>22</a> </span><span class="kw">fn </span>floor_log2(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize {
<a href=#23 id=23 data-nosnippet>23</a> <span class="self">self </span>&amp; !((<span class="number">1 </span>&lt;&lt; n) - <span class="number">1</span>)
<a href=#24 id=24 data-nosnippet>24</a> }
<a href=#25 id=25 data-nosnippet>25</a> <span class="attr">#[inline]
<a href=#26 id=26 data-nosnippet>26</a> </span><span class="kw">fn </span>ceil_log2(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize {
<a href=#27 id=27 data-nosnippet>27</a> (<span class="self">self </span>+ (<span class="number">1 </span>&lt;&lt; n) - <span class="number">1</span>).floor_log2(n)
<a href=#28 id=28 data-nosnippet>28</a> }
<a href=#29 id=29 data-nosnippet>29</a> <span class="attr">#[inline]
<a href=#30 id=30 data-nosnippet>30</a> </span><span class="kw">fn </span>align_power_of_two(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize {
<a href=#31 id=31 data-nosnippet>31</a> <span class="self">self</span>.ceil_log2(n)
<a href=#32 id=32 data-nosnippet>32</a> }
<a href=#33 id=33 data-nosnippet>33</a> <span class="attr">#[inline]
<a href=#34 id=34 data-nosnippet>34</a> </span><span class="kw">fn </span>align_power_of_two_and_shift(<span class="kw-2">&amp;</span><span class="self">self</span>, n: usize) -&gt; usize {
<a href=#35 id=35 data-nosnippet>35</a> (<span class="self">self </span>+ (<span class="number">1 </span>&lt;&lt; n) - <span class="number">1</span>) &gt;&gt; n
<a href=#36 id=36 data-nosnippet>36</a> }
<a href=#37 id=37 data-nosnippet>37</a>}
<a href=#38 id=38 data-nosnippet>38</a>
<a href=#39 id=39 data-nosnippet>39</a><span class="kw">pub fn </span>clamp&lt;T: PartialOrd&gt;(input: T, min: T, max: T) -&gt; T {
<a href=#40 id=40 data-nosnippet>40</a> <span class="kw">if </span>input &lt; min {
<a href=#41 id=41 data-nosnippet>41</a> min
<a href=#42 id=42 data-nosnippet>42</a> } <span class="kw">else if </span>input &gt; max {
<a href=#43 id=43 data-nosnippet>43</a> max
<a href=#44 id=44 data-nosnippet>44</a> } <span class="kw">else </span>{
<a href=#45 id=45 data-nosnippet>45</a> input
<a href=#46 id=46 data-nosnippet>46</a> }
<a href=#47 id=47 data-nosnippet>47</a>}
<a href=#48 id=48 data-nosnippet>48</a>
<a href=#49 id=49 data-nosnippet>49</a><span class="kw">pub trait </span>ILog: PrimInt {
<a href=#50 id=50 data-nosnippet>50</a> <span class="comment">// Integer binary logarithm of an integer value.
<a href=#51 id=51 data-nosnippet>51</a> // Returns floor(log2(self)) + 1, or 0 if self == 0.
<a href=#52 id=52 data-nosnippet>52</a> // This is the number of bits that would be required to represent self in two's
<a href=#53 id=53 data-nosnippet>53</a> // complement notation with all of the leading zeros stripped.
<a href=#54 id=54 data-nosnippet>54</a> // TODO: Mark const once trait functions can be constant
<a href=#55 id=55 data-nosnippet>55</a> </span><span class="kw">fn </span>ilog(<span class="self">self</span>) -&gt; usize {
<a href=#56 id=56 data-nosnippet>56</a> size_of::&lt;<span class="self">Self</span>&gt;() * <span class="number">8 </span>- <span class="self">self</span>.leading_zeros() <span class="kw">as </span>usize
<a href=#57 id=57 data-nosnippet>57</a> }
<a href=#58 id=58 data-nosnippet>58</a>}
<a href=#59 id=59 data-nosnippet>59</a>
<a href=#60 id=60 data-nosnippet>60</a><span class="kw">impl</span>&lt;T&gt; ILog <span class="kw">for </span>T <span class="kw">where </span>T: PrimInt {}
<a href=#61 id=61 data-nosnippet>61</a>
<a href=#62 id=62 data-nosnippet>62</a><span class="attr">#[inline(always)]
<a href=#63 id=63 data-nosnippet>63</a></span><span class="kw">pub fn </span>msb(x: i32) -&gt; i32 {
<a href=#64 id=64 data-nosnippet>64</a> <span class="macro">debug_assert!</span>(x &gt; <span class="number">0</span>);
<a href=#65 id=65 data-nosnippet>65</a> <span class="number">31 </span>^ (x.leading_zeros() <span class="kw">as </span>i32)
<a href=#66 id=66 data-nosnippet>66</a>}
<a href=#67 id=67 data-nosnippet>67</a>
<a href=#68 id=68 data-nosnippet>68</a><span class="attr">#[inline(always)]
<a href=#69 id=69 data-nosnippet>69</a></span><span class="kw">pub const fn </span>round_shift(value: i32, bit: usize) -&gt; i32 {
<a href=#70 id=70 data-nosnippet>70</a> (value + (<span class="number">1 </span>&lt;&lt; bit &gt;&gt; <span class="number">1</span>)) &gt;&gt; bit
<a href=#71 id=71 data-nosnippet>71</a>}
<a href=#72 id=72 data-nosnippet>72</a>
<a href=#73 id=73 data-nosnippet>73</a><span class="attr">#[cfg(test)]
<a href=#74 id=74 data-nosnippet>74</a></span><span class="kw">mod </span>tests {
<a href=#75 id=75 data-nosnippet>75</a> <span class="kw">use super</span>::<span class="kw-2">*</span>;
<a href=#76 id=76 data-nosnippet>76</a>
<a href=#77 id=77 data-nosnippet>77</a> <span class="attr">#[test]
<a href=#78 id=78 data-nosnippet>78</a> </span><span class="kw">fn </span>test_floor_log2() {
<a href=#79 id=79 data-nosnippet>79</a> <span class="macro">assert_eq!</span>(<span class="number">123usize</span>.floor_log2(<span class="number">4</span>), <span class="number">112</span>);
<a href=#80 id=80 data-nosnippet>80</a> <span class="macro">assert_eq!</span>(<span class="number">16usize</span>.floor_log2(<span class="number">4</span>), <span class="number">16</span>);
<a href=#81 id=81 data-nosnippet>81</a> <span class="macro">assert_eq!</span>(<span class="number">0usize</span>.floor_log2(<span class="number">4</span>), <span class="number">0</span>);
<a href=#82 id=82 data-nosnippet>82</a> }
<a href=#83 id=83 data-nosnippet>83</a>
<a href=#84 id=84 data-nosnippet>84</a> <span class="attr">#[test]
<a href=#85 id=85 data-nosnippet>85</a> </span><span class="kw">fn </span>test_ceil_log2() {
<a href=#86 id=86 data-nosnippet>86</a> <span class="macro">assert_eq!</span>(<span class="number">123usize</span>.ceil_log2(<span class="number">4</span>), <span class="number">128</span>);
<a href=#87 id=87 data-nosnippet>87</a> <span class="macro">assert_eq!</span>(<span class="number">16usize</span>.ceil_log2(<span class="number">4</span>), <span class="number">16</span>);
<a href=#88 id=88 data-nosnippet>88</a> <span class="macro">assert_eq!</span>(<span class="number">0usize</span>.ceil_log2(<span class="number">4</span>), <span class="number">0</span>);
<a href=#89 id=89 data-nosnippet>89</a> }
<a href=#90 id=90 data-nosnippet>90</a>
<a href=#91 id=91 data-nosnippet>91</a> <span class="attr">#[test]
<a href=#92 id=92 data-nosnippet>92</a> </span><span class="kw">fn </span>test_align_power_of_two() {
<a href=#93 id=93 data-nosnippet>93</a> <span class="macro">assert_eq!</span>(<span class="number">123usize</span>.align_power_of_two(<span class="number">4</span>), <span class="number">128</span>);
<a href=#94 id=94 data-nosnippet>94</a> <span class="macro">assert_eq!</span>(<span class="number">16usize</span>.align_power_of_two(<span class="number">4</span>), <span class="number">16</span>);
<a href=#95 id=95 data-nosnippet>95</a> <span class="macro">assert_eq!</span>(<span class="number">0usize</span>.align_power_of_two(<span class="number">4</span>), <span class="number">0</span>);
<a href=#96 id=96 data-nosnippet>96</a> }
<a href=#97 id=97 data-nosnippet>97</a>
<a href=#98 id=98 data-nosnippet>98</a> <span class="attr">#[test]
<a href=#99 id=99 data-nosnippet>99</a> </span><span class="kw">fn </span>test_align_power_of_two_and_shift() {
<a href=#100 id=100 data-nosnippet>100</a> <span class="macro">assert_eq!</span>(<span class="number">123usize</span>.align_power_of_two_and_shift(<span class="number">4</span>), <span class="number">8</span>);
<a href=#101 id=101 data-nosnippet>101</a> <span class="macro">assert_eq!</span>(<span class="number">16usize</span>.align_power_of_two_and_shift(<span class="number">4</span>), <span class="number">1</span>);
<a href=#102 id=102 data-nosnippet>102</a> <span class="macro">assert_eq!</span>(<span class="number">0usize</span>.align_power_of_two_and_shift(<span class="number">4</span>), <span class="number">0</span>);
<a href=#103 id=103 data-nosnippet>103</a> }
<a href=#104 id=104 data-nosnippet>104</a>
<a href=#105 id=105 data-nosnippet>105</a> <span class="attr">#[test]
<a href=#106 id=106 data-nosnippet>106</a> </span><span class="kw">fn </span>test_clamp() {
<a href=#107 id=107 data-nosnippet>107</a> <span class="macro">assert_eq!</span>(clamp(<span class="number">5</span>, <span class="number">0</span>, <span class="number">10</span>), <span class="number">5</span>);
<a href=#108 id=108 data-nosnippet>108</a> <span class="macro">assert_eq!</span>(clamp(-<span class="number">1</span>, <span class="number">0</span>, <span class="number">10</span>), <span class="number">0</span>);
<a href=#109 id=109 data-nosnippet>109</a> <span class="macro">assert_eq!</span>(clamp(<span class="number">11</span>, <span class="number">0</span>, <span class="number">10</span>), <span class="number">10</span>);
<a href=#110 id=110 data-nosnippet>110</a> }
<a href=#111 id=111 data-nosnippet>111</a>
<a href=#112 id=112 data-nosnippet>112</a> <span class="attr">#[test]
<a href=#113 id=113 data-nosnippet>113</a> </span><span class="kw">fn </span>test_ilog() {
<a href=#114 id=114 data-nosnippet>114</a> <span class="macro">assert_eq!</span>(ILog::ilog(<span class="number">0i32</span>), <span class="number">0</span>);
<a href=#115 id=115 data-nosnippet>115</a> <span class="macro">assert_eq!</span>(ILog::ilog(<span class="number">1i32</span>), <span class="number">1</span>);
<a href=#116 id=116 data-nosnippet>116</a> <span class="macro">assert_eq!</span>(ILog::ilog(<span class="number">2i32</span>), <span class="number">2</span>);
<a href=#117 id=117 data-nosnippet>117</a> <span class="macro">assert_eq!</span>(ILog::ilog(<span class="number">3i32</span>), <span class="number">2</span>);
<a href=#118 id=118 data-nosnippet>118</a> <span class="macro">assert_eq!</span>(ILog::ilog(<span class="number">4i32</span>), <span class="number">3</span>);
<a href=#119 id=119 data-nosnippet>119</a> }
<a href=#120 id=120 data-nosnippet>120</a>
<a href=#121 id=121 data-nosnippet>121</a> <span class="attr">#[test]
<a href=#122 id=122 data-nosnippet>122</a> </span><span class="kw">fn </span>test_msb() {
<a href=#123 id=123 data-nosnippet>123</a> <span class="macro">assert_eq!</span>(msb(<span class="number">1</span>), <span class="number">0</span>);
<a href=#124 id=124 data-nosnippet>124</a> <span class="macro">assert_eq!</span>(msb(<span class="number">2</span>), <span class="number">1</span>);
<a href=#125 id=125 data-nosnippet>125</a> <span class="macro">assert_eq!</span>(msb(<span class="number">3</span>), <span class="number">1</span>);
<a href=#126 id=126 data-nosnippet>126</a> <span class="macro">assert_eq!</span>(msb(<span class="number">4</span>), <span class="number">2</span>);
<a href=#127 id=127 data-nosnippet>127</a> }
<a href=#128 id=128 data-nosnippet>128</a>
<a href=#129 id=129 data-nosnippet>129</a> <span class="attr">#[test]
<a href=#130 id=130 data-nosnippet>130</a> </span><span class="kw">fn </span>test_round_shift() {
<a href=#131 id=131 data-nosnippet>131</a> <span class="macro">assert_eq!</span>(round_shift(<span class="number">7</span>, <span class="number">2</span>), <span class="number">2</span>);
<a href=#132 id=132 data-nosnippet>132</a> <span class="macro">assert_eq!</span>(round_shift(<span class="number">8</span>, <span class="number">2</span>), <span class="number">2</span>);
<a href=#133 id=133 data-nosnippet>133</a> <span class="macro">assert_eq!</span>(round_shift(<span class="number">9</span>, <span class="number">2</span>), <span class="number">2</span>);
<a href=#134 id=134 data-nosnippet>134</a> <span class="macro">assert_eq!</span>(round_shift(<span class="number">10</span>, <span class="number">2</span>), <span class="number">3</span>);
<a href=#135 id=135 data-nosnippet>135</a> }
<a href=#136 id=136 data-nosnippet>136</a>}
</code></pre></div></section></main></body></html>
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/home/newkirk/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/v_frame-0.3.9/src/pixel.rs`."><title>pixel.rs - source</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="v_frame" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../static.files/storage-e2aeef58.js"></script><script defer src="../../static.files/src-script-813739b1.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-044be391.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="src-sidebar-title"><h2>Files</h2></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><section id="main-content" class="content"><div class="main-heading"><h1><div class="sub-heading">v_frame/</div>pixel.rs</h1><rustdoc-toolbar></rustdoc-toolbar></div><div class="example-wrap digits-3"><pre class="rust"><code><a href=#1 id=1 data-nosnippet>1</a><span class="comment">// Copyright (c) 2017-2021, The rav1e contributors. All rights reserved
<a href=#2 id=2 data-nosnippet>2</a>//
<a href=#3 id=3 data-nosnippet>3</a>// This source code is subject to the terms of the BSD 2 Clause License and
<a href=#4 id=4 data-nosnippet>4</a>// the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
<a href=#5 id=5 data-nosnippet>5</a>// was not distributed with this source code in the LICENSE file, you can
<a href=#6 id=6 data-nosnippet>6</a>// obtain it at www.aomedia.org/license/software. If the Alliance for Open
<a href=#7 id=7 data-nosnippet>7</a>// Media Patent License 1.0 was not distributed with this source code in the
<a href=#8 id=8 data-nosnippet>8</a>// PATENTS file, you can obtain it at www.aomedia.org/license/patent.
<a href=#9 id=9 data-nosnippet>9</a>
<a href=#10 id=10 data-nosnippet>10</a></span><span class="attr">#[cfg(feature = <span class="string">"serialize"</span>)]
<a href=#11 id=11 data-nosnippet>11</a></span><span class="kw">use </span>serde::{Deserialize, Serialize};
<a href=#12 id=12 data-nosnippet>12</a>
<a href=#13 id=13 data-nosnippet>13</a><span class="attr">#[cfg(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>))]
<a href=#14 id=14 data-nosnippet>14</a></span><span class="kw">use </span>wasm_bindgen::prelude::<span class="kw-2">*</span>;
<a href=#15 id=15 data-nosnippet>15</a>
<a href=#16 id=16 data-nosnippet>16</a><span class="kw">use </span>num_traits::{AsPrimitive, FromPrimitive, PrimInt, Signed};
<a href=#17 id=17 data-nosnippet>17</a>
<a href=#18 id=18 data-nosnippet>18</a><span class="kw">use </span>std::fmt;
<a href=#19 id=19 data-nosnippet>19</a><span class="kw">use </span>std::fmt::{Debug, Display};
<a href=#20 id=20 data-nosnippet>20</a><span class="kw">use </span>std::mem::size_of;
<a href=#21 id=21 data-nosnippet>21</a><span class="kw">use </span>std::ops::AddAssign;
<a href=#22 id=22 data-nosnippet>22</a>
<a href=#23 id=23 data-nosnippet>23</a><span class="doccomment">/// Trait for casting between primitive types.
<a href=#24 id=24 data-nosnippet>24</a></span><span class="kw">pub trait </span>CastFromPrimitive&lt;T&gt;: Copy + <span class="lifetime">'static </span>{
<a href=#25 id=25 data-nosnippet>25</a> <span class="doccomment">/// Casts the given value into `Self`.
<a href=#26 id=26 data-nosnippet>26</a> </span><span class="kw">fn </span>cast_from(v: T) -&gt; <span class="self">Self</span>;
<a href=#27 id=27 data-nosnippet>27</a>}
<a href=#28 id=28 data-nosnippet>28</a>
<a href=#29 id=29 data-nosnippet>29</a><span class="macro">macro_rules!</span> impl_cast_from_primitive {
<a href=#30 id=30 data-nosnippet>30</a> ( <span class="macro-nonterminal">$T</span>:ty =&gt; <span class="macro-nonterminal">$U</span>:ty ) =&gt; {
<a href=#31 id=31 data-nosnippet>31</a> <span class="kw">impl </span>CastFromPrimitive&lt;<span class="macro-nonterminal">$U</span>&gt; <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<a href=#32 id=32 data-nosnippet>32</a> <span class="attr">#[inline(always)]
<a href=#33 id=33 data-nosnippet>33</a> </span><span class="kw">fn </span>cast_from(v: <span class="macro-nonterminal">$U</span>) -&gt; <span class="self">Self </span>{ v <span class="kw">as </span><span class="self">Self </span>}
<a href=#34 id=34 data-nosnippet>34</a> }
<a href=#35 id=35 data-nosnippet>35</a> };
<a href=#36 id=36 data-nosnippet>36</a> ( <span class="macro-nonterminal">$T</span>:ty =&gt; { $( <span class="macro-nonterminal">$U</span>:ty ),* } ) =&gt; {
<a href=#37 id=37 data-nosnippet>37</a> $( <span class="macro">impl_cast_from_primitive!</span>(<span class="macro-nonterminal">$T </span>=&gt; <span class="macro-nonterminal">$U</span>); )*
<a href=#38 id=38 data-nosnippet>38</a> };
<a href=#39 id=39 data-nosnippet>39</a>}
<a href=#40 id=40 data-nosnippet>40</a>
<a href=#41 id=41 data-nosnippet>41</a><span class="comment">// casts to { u8, u16 } are implemented separately using Pixel, so that the
<a href=#42 id=42 data-nosnippet>42</a>// compiler understands that CastFromPrimitive&lt;T: Pixel&gt; is always implemented
<a href=#43 id=43 data-nosnippet>43</a></span><span class="macro">impl_cast_from_primitive!</span>(u8 =&gt; { u32, u64, usize });
<a href=#44 id=44 data-nosnippet>44</a><span class="macro">impl_cast_from_primitive!</span>(u8 =&gt; { i8, i64, isize });
<a href=#45 id=45 data-nosnippet>45</a><span class="macro">impl_cast_from_primitive!</span>(u16 =&gt; { u32, u64, usize });
<a href=#46 id=46 data-nosnippet>46</a><span class="macro">impl_cast_from_primitive!</span>(u16 =&gt; { i8, i64, isize });
<a href=#47 id=47 data-nosnippet>47</a><span class="macro">impl_cast_from_primitive!</span>(i16 =&gt; { u32, u64, usize });
<a href=#48 id=48 data-nosnippet>48</a><span class="macro">impl_cast_from_primitive!</span>(i16 =&gt; { i8, i64, isize });
<a href=#49 id=49 data-nosnippet>49</a><span class="macro">impl_cast_from_primitive!</span>(i32 =&gt; { u32, u64, usize });
<a href=#50 id=50 data-nosnippet>50</a><span class="macro">impl_cast_from_primitive!</span>(i32 =&gt; { i8, i64, isize });
<a href=#51 id=51 data-nosnippet>51</a>
<a href=#52 id=52 data-nosnippet>52</a><span class="kw">pub trait </span>RegisteredPrimitive:
<a href=#53 id=53 data-nosnippet>53</a> PrimInt
<a href=#54 id=54 data-nosnippet>54</a> + AsPrimitive&lt;u8&gt;
<a href=#55 id=55 data-nosnippet>55</a> + AsPrimitive&lt;i16&gt;
<a href=#56 id=56 data-nosnippet>56</a> + AsPrimitive&lt;u16&gt;
<a href=#57 id=57 data-nosnippet>57</a> + AsPrimitive&lt;i32&gt;
<a href=#58 id=58 data-nosnippet>58</a> + AsPrimitive&lt;u32&gt;
<a href=#59 id=59 data-nosnippet>59</a> + AsPrimitive&lt;usize&gt;
<a href=#60 id=60 data-nosnippet>60</a> + CastFromPrimitive&lt;u8&gt;
<a href=#61 id=61 data-nosnippet>61</a> + CastFromPrimitive&lt;i16&gt;
<a href=#62 id=62 data-nosnippet>62</a> + CastFromPrimitive&lt;u16&gt;
<a href=#63 id=63 data-nosnippet>63</a> + CastFromPrimitive&lt;i32&gt;
<a href=#64 id=64 data-nosnippet>64</a> + CastFromPrimitive&lt;u32&gt;
<a href=#65 id=65 data-nosnippet>65</a> + CastFromPrimitive&lt;usize&gt;
<a href=#66 id=66 data-nosnippet>66</a>{
<a href=#67 id=67 data-nosnippet>67</a>}
<a href=#68 id=68 data-nosnippet>68</a>
<a href=#69 id=69 data-nosnippet>69</a><span class="kw">impl </span>RegisteredPrimitive <span class="kw">for </span>u8 {}
<a href=#70 id=70 data-nosnippet>70</a><span class="kw">impl </span>RegisteredPrimitive <span class="kw">for </span>u16 {}
<a href=#71 id=71 data-nosnippet>71</a><span class="kw">impl </span>RegisteredPrimitive <span class="kw">for </span>i16 {}
<a href=#72 id=72 data-nosnippet>72</a><span class="kw">impl </span>RegisteredPrimitive <span class="kw">for </span>i32 {}
<a href=#73 id=73 data-nosnippet>73</a>
<a href=#74 id=74 data-nosnippet>74</a><span class="macro">macro_rules!</span> impl_cast_from_pixel_to_primitive {
<a href=#75 id=75 data-nosnippet>75</a> ( <span class="macro-nonterminal">$T</span>:ty ) =&gt; {
<a href=#76 id=76 data-nosnippet>76</a> <span class="kw">impl</span>&lt;T: RegisteredPrimitive&gt; CastFromPrimitive&lt;T&gt; <span class="kw">for </span><span class="macro-nonterminal">$T </span>{
<a href=#77 id=77 data-nosnippet>77</a> <span class="attr">#[inline(always)]
<a href=#78 id=78 data-nosnippet>78</a> </span><span class="kw">fn </span>cast_from(v: T) -&gt; <span class="self">Self </span>{
<a href=#79 id=79 data-nosnippet>79</a> v.as_()
<a href=#80 id=80 data-nosnippet>80</a> }
<a href=#81 id=81 data-nosnippet>81</a> }
<a href=#82 id=82 data-nosnippet>82</a> };
<a href=#83 id=83 data-nosnippet>83</a>}
<a href=#84 id=84 data-nosnippet>84</a>
<a href=#85 id=85 data-nosnippet>85</a><span class="macro">impl_cast_from_pixel_to_primitive!</span>(u8);
<a href=#86 id=86 data-nosnippet>86</a><span class="macro">impl_cast_from_pixel_to_primitive!</span>(i16);
<a href=#87 id=87 data-nosnippet>87</a><span class="macro">impl_cast_from_pixel_to_primitive!</span>(u16);
<a href=#88 id=88 data-nosnippet>88</a><span class="macro">impl_cast_from_pixel_to_primitive!</span>(i32);
<a href=#89 id=89 data-nosnippet>89</a><span class="macro">impl_cast_from_pixel_to_primitive!</span>(u32);
<a href=#90 id=90 data-nosnippet>90</a>
<a href=#91 id=91 data-nosnippet>91</a><span class="doccomment">/// Types that can be used as pixel types.
<a href=#92 id=92 data-nosnippet>92</a></span><span class="attr">#[derive(PartialEq, Eq)]
<a href=#93 id=93 data-nosnippet>93</a></span><span class="kw">pub enum </span>PixelType {
<a href=#94 id=94 data-nosnippet>94</a> <span class="doccomment">/// 8 bits per pixel, stored in a `u8`.
<a href=#95 id=95 data-nosnippet>95</a> </span>U8,
<a href=#96 id=96 data-nosnippet>96</a> <span class="doccomment">/// 10 or 12 bits per pixel, stored in a `u16`.
<a href=#97 id=97 data-nosnippet>97</a> </span>U16,
<a href=#98 id=98 data-nosnippet>98</a>}
<a href=#99 id=99 data-nosnippet>99</a>
<a href=#100 id=100 data-nosnippet>100</a><span class="doccomment">/// A type that can be used as a pixel type.
<a href=#101 id=101 data-nosnippet>101</a></span><span class="kw">pub trait </span>Pixel:
<a href=#102 id=102 data-nosnippet>102</a> RegisteredPrimitive + Into&lt;u32&gt; + Into&lt;i32&gt; + Debug + Display + Send + Sync + <span class="lifetime">'static
<a href=#103 id=103 data-nosnippet>103</a></span>{
<a href=#104 id=104 data-nosnippet>104</a> <span class="kw">type </span>Coeff: Coefficient;
<a href=#105 id=105 data-nosnippet>105</a>
<a href=#106 id=106 data-nosnippet>106</a> <span class="doccomment">/// Returns a [`PixelType`] variant corresponding to this type.
<a href=#107 id=107 data-nosnippet>107</a> ///
<a href=#108 id=108 data-nosnippet>108</a> /// [`PixelType`]: enum.PixelType.html
<a href=#109 id=109 data-nosnippet>109</a> </span><span class="kw">fn </span>type_enum() -&gt; PixelType;
<a href=#110 id=110 data-nosnippet>110</a>
<a href=#111 id=111 data-nosnippet>111</a> <span class="doccomment">/// Converts stride in pixels to stride in bytes.
<a href=#112 id=112 data-nosnippet>112</a> </span><span class="attr">#[inline]
<a href=#113 id=113 data-nosnippet>113</a> </span><span class="kw">fn </span>to_asm_stride(in_stride: usize) -&gt; isize {
<a href=#114 id=114 data-nosnippet>114</a> (in_stride * size_of::&lt;<span class="self">Self</span>&gt;()) <span class="kw">as </span>isize
<a href=#115 id=115 data-nosnippet>115</a> }
<a href=#116 id=116 data-nosnippet>116</a>}
<a href=#117 id=117 data-nosnippet>117</a>
<a href=#118 id=118 data-nosnippet>118</a><span class="kw">impl </span>Pixel <span class="kw">for </span>u8 {
<a href=#119 id=119 data-nosnippet>119</a> <span class="kw">type </span>Coeff = i16;
<a href=#120 id=120 data-nosnippet>120</a>
<a href=#121 id=121 data-nosnippet>121</a> <span class="attr">#[inline]
<a href=#122 id=122 data-nosnippet>122</a> </span><span class="kw">fn </span>type_enum() -&gt; PixelType {
<a href=#123 id=123 data-nosnippet>123</a> PixelType::U8
<a href=#124 id=124 data-nosnippet>124</a> }
<a href=#125 id=125 data-nosnippet>125</a>}
<a href=#126 id=126 data-nosnippet>126</a>
<a href=#127 id=127 data-nosnippet>127</a><span class="kw">impl </span>Pixel <span class="kw">for </span>u16 {
<a href=#128 id=128 data-nosnippet>128</a> <span class="kw">type </span>Coeff = i32;
<a href=#129 id=129 data-nosnippet>129</a>
<a href=#130 id=130 data-nosnippet>130</a> <span class="attr">#[inline]
<a href=#131 id=131 data-nosnippet>131</a> </span><span class="kw">fn </span>type_enum() -&gt; PixelType {
<a href=#132 id=132 data-nosnippet>132</a> PixelType::U16
<a href=#133 id=133 data-nosnippet>133</a> }
<a href=#134 id=134 data-nosnippet>134</a>}
<a href=#135 id=135 data-nosnippet>135</a>
<a href=#136 id=136 data-nosnippet>136</a><span class="kw">pub trait </span>Coefficient:
<a href=#137 id=137 data-nosnippet>137</a> RegisteredPrimitive + Into&lt;i32&gt; + AddAssign + Signed + Debug + <span class="lifetime">'static
<a href=#138 id=138 data-nosnippet>138</a></span>{
<a href=#139 id=139 data-nosnippet>139</a> <span class="kw">type </span>Pixel: Pixel;
<a href=#140 id=140 data-nosnippet>140</a>}
<a href=#141 id=141 data-nosnippet>141</a>
<a href=#142 id=142 data-nosnippet>142</a><span class="kw">impl </span>Coefficient <span class="kw">for </span>i16 {
<a href=#143 id=143 data-nosnippet>143</a> <span class="kw">type </span>Pixel = u8;
<a href=#144 id=144 data-nosnippet>144</a>}
<a href=#145 id=145 data-nosnippet>145</a><span class="kw">impl </span>Coefficient <span class="kw">for </span>i32 {
<a href=#146 id=146 data-nosnippet>146</a> <span class="kw">type </span>Pixel = u16;
<a href=#147 id=147 data-nosnippet>147</a>}
<a href=#148 id=148 data-nosnippet>148</a>
<a href=#149 id=149 data-nosnippet>149</a><span class="doccomment">/// Chroma subsampling format
<a href=#150 id=150 data-nosnippet>150</a></span><span class="attr">#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
<a href=#151 id=151 data-nosnippet>151</a>#[cfg_attr(feature = <span class="string">"serialize"</span>, derive(Serialize, Deserialize))]
<a href=#152 id=152 data-nosnippet>152</a>#[cfg_attr(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>), wasm_bindgen)]
<a href=#153 id=153 data-nosnippet>153</a>#[repr(C)]
<a href=#154 id=154 data-nosnippet>154</a></span><span class="kw">pub enum </span>ChromaSampling {
<a href=#155 id=155 data-nosnippet>155</a> <span class="doccomment">/// Both vertically and horizontally subsampled.
<a href=#156 id=156 data-nosnippet>156</a> </span><span class="attr">#[default]
<a href=#157 id=157 data-nosnippet>157</a> </span>Cs420,
<a href=#158 id=158 data-nosnippet>158</a> <span class="doccomment">/// Horizontally subsampled.
<a href=#159 id=159 data-nosnippet>159</a> </span>Cs422,
<a href=#160 id=160 data-nosnippet>160</a> <span class="doccomment">/// Not subsampled.
<a href=#161 id=161 data-nosnippet>161</a> </span>Cs444,
<a href=#162 id=162 data-nosnippet>162</a> <span class="doccomment">/// Monochrome.
<a href=#163 id=163 data-nosnippet>163</a> </span>Cs400,
<a href=#164 id=164 data-nosnippet>164</a>}
<a href=#165 id=165 data-nosnippet>165</a>
<a href=#166 id=166 data-nosnippet>166</a><span class="kw">impl </span>FromPrimitive <span class="kw">for </span>ChromaSampling {
<a href=#167 id=167 data-nosnippet>167</a> <span class="kw">fn </span>from_i64(n: i64) -&gt; <span class="prelude-ty">Option</span>&lt;<span class="self">Self</span>&gt; {
<a href=#168 id=168 data-nosnippet>168</a> <span class="kw">use </span>ChromaSampling::<span class="kw-2">*</span>;
<a href=#169 id=169 data-nosnippet>169</a>
<a href=#170 id=170 data-nosnippet>170</a> <span class="kw">match </span>n {
<a href=#171 id=171 data-nosnippet>171</a> n <span class="kw">if </span>n == Cs420 <span class="kw">as </span>i64 =&gt; <span class="prelude-val">Some</span>(Cs420),
<a href=#172 id=172 data-nosnippet>172</a> n <span class="kw">if </span>n == Cs422 <span class="kw">as </span>i64 =&gt; <span class="prelude-val">Some</span>(Cs422),
<a href=#173 id=173 data-nosnippet>173</a> n <span class="kw">if </span>n == Cs444 <span class="kw">as </span>i64 =&gt; <span class="prelude-val">Some</span>(Cs444),
<a href=#174 id=174 data-nosnippet>174</a> n <span class="kw">if </span>n == Cs400 <span class="kw">as </span>i64 =&gt; <span class="prelude-val">Some</span>(Cs400),
<a href=#175 id=175 data-nosnippet>175</a> <span class="kw">_ </span>=&gt; <span class="prelude-val">None</span>,
<a href=#176 id=176 data-nosnippet>176</a> }
<a href=#177 id=177 data-nosnippet>177</a> }
<a href=#178 id=178 data-nosnippet>178</a>
<a href=#179 id=179 data-nosnippet>179</a> <span class="kw">fn </span>from_u64(n: u64) -&gt; <span class="prelude-ty">Option</span>&lt;<span class="self">Self</span>&gt; {
<a href=#180 id=180 data-nosnippet>180</a> ChromaSampling::from_i64(n <span class="kw">as </span>i64)
<a href=#181 id=181 data-nosnippet>181</a> }
<a href=#182 id=182 data-nosnippet>182</a>}
<a href=#183 id=183 data-nosnippet>183</a>
<a href=#184 id=184 data-nosnippet>184</a><span class="kw">impl </span>fmt::Display <span class="kw">for </span>ChromaSampling {
<a href=#185 id=185 data-nosnippet>185</a> <span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>fmt::Formatter) -&gt; <span class="prelude-ty">Result</span>&lt;(), fmt::Error&gt; {
<a href=#186 id=186 data-nosnippet>186</a> <span class="macro">write!</span>(
<a href=#187 id=187 data-nosnippet>187</a> f,
<a href=#188 id=188 data-nosnippet>188</a> <span class="string">"{}"</span>,
<a href=#189 id=189 data-nosnippet>189</a> <span class="kw">match </span><span class="self">self </span>{
<a href=#190 id=190 data-nosnippet>190</a> ChromaSampling::Cs420 =&gt; <span class="string">"4:2:0"</span>,
<a href=#191 id=191 data-nosnippet>191</a> ChromaSampling::Cs422 =&gt; <span class="string">"4:2:2"</span>,
<a href=#192 id=192 data-nosnippet>192</a> ChromaSampling::Cs444 =&gt; <span class="string">"4:4:4"</span>,
<a href=#193 id=193 data-nosnippet>193</a> ChromaSampling::Cs400 =&gt; <span class="string">"Monochrome"</span>,
<a href=#194 id=194 data-nosnippet>194</a> }
<a href=#195 id=195 data-nosnippet>195</a> )
<a href=#196 id=196 data-nosnippet>196</a> }
<a href=#197 id=197 data-nosnippet>197</a>}
<a href=#198 id=198 data-nosnippet>198</a>
<a href=#199 id=199 data-nosnippet>199</a><span class="kw">impl </span>ChromaSampling {
<a href=#200 id=200 data-nosnippet>200</a> <span class="doccomment">/// Provides the amount to right shift the luma plane dimensions to get the
<a href=#201 id=201 data-nosnippet>201</a> /// chroma plane dimensions.
<a href=#202 id=202 data-nosnippet>202</a> /// Only values 0 or 1 are ever returned.
<a href=#203 id=203 data-nosnippet>203</a> /// The plane dimensions must also be rounded up to accommodate odd luma plane
<a href=#204 id=204 data-nosnippet>204</a> /// sizes.
<a href=#205 id=205 data-nosnippet>205</a> /// Cs400 returns None, as there are no chroma planes.
<a href=#206 id=206 data-nosnippet>206</a> </span><span class="kw">pub const fn </span>get_decimation(<span class="self">self</span>) -&gt; <span class="prelude-ty">Option</span>&lt;(usize, usize)&gt; {
<a href=#207 id=207 data-nosnippet>207</a> <span class="kw">use </span><span class="self">self</span>::ChromaSampling::<span class="kw-2">*</span>;
<a href=#208 id=208 data-nosnippet>208</a> <span class="kw">match </span><span class="self">self </span>{
<a href=#209 id=209 data-nosnippet>209</a> Cs420 =&gt; <span class="prelude-val">Some</span>((<span class="number">1</span>, <span class="number">1</span>)),
<a href=#210 id=210 data-nosnippet>210</a> Cs422 =&gt; <span class="prelude-val">Some</span>((<span class="number">1</span>, <span class="number">0</span>)),
<a href=#211 id=211 data-nosnippet>211</a> Cs444 =&gt; <span class="prelude-val">Some</span>((<span class="number">0</span>, <span class="number">0</span>)),
<a href=#212 id=212 data-nosnippet>212</a> Cs400 =&gt; <span class="prelude-val">None</span>,
<a href=#213 id=213 data-nosnippet>213</a> }
<a href=#214 id=214 data-nosnippet>214</a> }
<a href=#215 id=215 data-nosnippet>215</a>
<a href=#216 id=216 data-nosnippet>216</a> <span class="doccomment">/// Calculates the size of a chroma plane for this sampling type, given the luma plane dimensions.
<a href=#217 id=217 data-nosnippet>217</a> </span><span class="kw">pub const fn </span>get_chroma_dimensions(
<a href=#218 id=218 data-nosnippet>218</a> <span class="self">self</span>,
<a href=#219 id=219 data-nosnippet>219</a> luma_width: usize,
<a href=#220 id=220 data-nosnippet>220</a> luma_height: usize,
<a href=#221 id=221 data-nosnippet>221</a> ) -&gt; (usize, usize) {
<a href=#222 id=222 data-nosnippet>222</a> <span class="kw">if let </span><span class="prelude-val">Some</span>((ss_x, ss_y)) = <span class="self">self</span>.get_decimation() {
<a href=#223 id=223 data-nosnippet>223</a> ((luma_width + ss_x) &gt;&gt; ss_x, (luma_height + ss_y) &gt;&gt; ss_y)
<a href=#224 id=224 data-nosnippet>224</a> } <span class="kw">else </span>{
<a href=#225 id=225 data-nosnippet>225</a> (<span class="number">0</span>, <span class="number">0</span>)
<a href=#226 id=226 data-nosnippet>226</a> }
<a href=#227 id=227 data-nosnippet>227</a> }
<a href=#228 id=228 data-nosnippet>228</a>}
<a href=#229 id=229 data-nosnippet>229</a>
<a href=#230 id=230 data-nosnippet>230</a><span class="attr">#[cfg(test)]
<a href=#231 id=231 data-nosnippet>231</a></span><span class="kw">mod </span>test {
<a href=#232 id=232 data-nosnippet>232</a> <span class="kw">use super</span>::<span class="kw-2">*</span>;
<a href=#233 id=233 data-nosnippet>233</a>
<a href=#234 id=234 data-nosnippet>234</a> <span class="attr">#[cfg(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>))]
<a href=#235 id=235 data-nosnippet>235</a> </span><span class="kw">use </span>wasm_bindgen_test::<span class="kw-2">*</span>;
<a href=#236 id=236 data-nosnippet>236</a>
<a href=#237 id=237 data-nosnippet>237</a> <span class="attr">#[cfg(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>))]
<a href=#238 id=238 data-nosnippet>238</a> </span><span class="macro">wasm_bindgen_test_configure!</span>(run_in_browser);
<a href=#239 id=239 data-nosnippet>239</a>
<a href=#240 id=240 data-nosnippet>240</a> <span class="attr">#[cfg_attr(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>), wasm_bindgen_test)]
<a href=#241 id=241 data-nosnippet>241</a> #[test]
<a href=#242 id=242 data-nosnippet>242</a> </span><span class="kw">fn </span>asm_stride() {
<a href=#243 id=243 data-nosnippet>243</a> <span class="kw">let </span>tests = [(<span class="number">7</span>, <span class="number">7</span>, <span class="number">14</span>), (<span class="number">12</span>, <span class="number">12</span>, <span class="number">24</span>), (<span class="number">1234</span>, <span class="number">1234</span>, <span class="number">2468</span>)];
<a href=#244 id=244 data-nosnippet>244</a>
<a href=#245 id=245 data-nosnippet>245</a> <span class="kw">for </span>(in_stride, u8_bytes, u16_bytes) <span class="kw">in </span>tests {
<a href=#246 id=246 data-nosnippet>246</a> <span class="macro">assert_eq!</span>(u8::to_asm_stride(in_stride), u8_bytes);
<a href=#247 id=247 data-nosnippet>247</a> <span class="macro">assert_eq!</span>(u16::to_asm_stride(in_stride), u16_bytes);
<a href=#248 id=248 data-nosnippet>248</a> }
<a href=#249 id=249 data-nosnippet>249</a> }
<a href=#250 id=250 data-nosnippet>250</a>
<a href=#251 id=251 data-nosnippet>251</a> <span class="attr">#[cfg_attr(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>), wasm_bindgen_test)]
<a href=#252 id=252 data-nosnippet>252</a> #[test]
<a href=#253 id=253 data-nosnippet>253</a> </span><span class="kw">fn </span>type_enum() {
<a href=#254 id=254 data-nosnippet>254</a> <span class="macro">assert!</span>(u8::type_enum() == PixelType::U8);
<a href=#255 id=255 data-nosnippet>255</a> <span class="macro">assert!</span>(u16::type_enum() == PixelType::U16);
<a href=#256 id=256 data-nosnippet>256</a> }
<a href=#257 id=257 data-nosnippet>257</a>
<a href=#258 id=258 data-nosnippet>258</a> <span class="attr">#[cfg_attr(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>), wasm_bindgen_test)]
<a href=#259 id=259 data-nosnippet>259</a> #[test]
<a href=#260 id=260 data-nosnippet>260</a> </span><span class="kw">fn </span>chroma_sampling_from_int() {
<a href=#261 id=261 data-nosnippet>261</a> <span class="kw">let </span>expected = [
<a href=#262 id=262 data-nosnippet>262</a> (-<span class="number">1</span>, <span class="prelude-val">None</span>),
<a href=#263 id=263 data-nosnippet>263</a> (<span class="number">0</span>, <span class="prelude-val">Some</span>(ChromaSampling::Cs420)),
<a href=#264 id=264 data-nosnippet>264</a> (<span class="number">1</span>, <span class="prelude-val">Some</span>(ChromaSampling::Cs422)),
<a href=#265 id=265 data-nosnippet>265</a> (<span class="number">2</span>, <span class="prelude-val">Some</span>(ChromaSampling::Cs444)),
<a href=#266 id=266 data-nosnippet>266</a> (<span class="number">3</span>, <span class="prelude-val">Some</span>(ChromaSampling::Cs400)),
<a href=#267 id=267 data-nosnippet>267</a> (<span class="number">4</span>, <span class="prelude-val">None</span>),
<a href=#268 id=268 data-nosnippet>268</a> ];
<a href=#269 id=269 data-nosnippet>269</a>
<a href=#270 id=270 data-nosnippet>270</a> <span class="kw">for </span>(int, chroma_sampling) <span class="kw">in </span>expected {
<a href=#271 id=271 data-nosnippet>271</a> <span class="kw">let </span>converted = ChromaSampling::from_i32(int);
<a href=#272 id=272 data-nosnippet>272</a> <span class="macro">assert_eq!</span>(chroma_sampling, converted);
<a href=#273 id=273 data-nosnippet>273</a>
<a href=#274 id=274 data-nosnippet>274</a> <span class="kw">let </span>converted_uint = ChromaSampling::from_u32(int <span class="kw">as </span>u32);
<a href=#275 id=275 data-nosnippet>275</a> <span class="macro">assert_eq!</span>(chroma_sampling, converted_uint);
<a href=#276 id=276 data-nosnippet>276</a> }
<a href=#277 id=277 data-nosnippet>277</a> }
<a href=#278 id=278 data-nosnippet>278</a>
<a href=#279 id=279 data-nosnippet>279</a> <span class="attr">#[cfg_attr(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>), wasm_bindgen_test)]
<a href=#280 id=280 data-nosnippet>280</a> #[test]
<a href=#281 id=281 data-nosnippet>281</a> </span><span class="kw">fn </span>display_chroma_sampling() {
<a href=#282 id=282 data-nosnippet>282</a> <span class="kw">use </span>std::fmt::Write;
<a href=#283 id=283 data-nosnippet>283</a>
<a href=#284 id=284 data-nosnippet>284</a> <span class="kw">let </span>all_cs = [
<a href=#285 id=285 data-nosnippet>285</a> (ChromaSampling::Cs420, <span class="string">"4:2:0"</span>),
<a href=#286 id=286 data-nosnippet>286</a> (ChromaSampling::Cs422, <span class="string">"4:2:2"</span>),
<a href=#287 id=287 data-nosnippet>287</a> (ChromaSampling::Cs444, <span class="string">"4:4:4"</span>),
<a href=#288 id=288 data-nosnippet>288</a> (ChromaSampling::Cs400, <span class="string">"Monochrome"</span>),
<a href=#289 id=289 data-nosnippet>289</a> ];
<a href=#290 id=290 data-nosnippet>290</a>
<a href=#291 id=291 data-nosnippet>291</a> <span class="kw">for </span>(cs, expected) <span class="kw">in </span>all_cs {
<a href=#292 id=292 data-nosnippet>292</a> <span class="kw">let </span><span class="kw-2">mut </span>s = String::new();
<a href=#293 id=293 data-nosnippet>293</a> <span class="macro">write!</span>(<span class="kw-2">&amp;mut </span>s, <span class="string">"{cs}"</span>).expect(<span class="string">"can display"</span>);
<a href=#294 id=294 data-nosnippet>294</a> <span class="macro">assert_eq!</span>(<span class="kw-2">&amp;</span>s, expected);
<a href=#295 id=295 data-nosnippet>295</a> }
<a href=#296 id=296 data-nosnippet>296</a> }
<a href=#297 id=297 data-nosnippet>297</a>
<a href=#298 id=298 data-nosnippet>298</a> <span class="attr">#[cfg_attr(all(target_arch = <span class="string">"wasm32"</span>, target_os = <span class="string">"unknown"</span>), wasm_bindgen_test)]
<a href=#299 id=299 data-nosnippet>299</a> #[test]
<a href=#300 id=300 data-nosnippet>300</a> </span><span class="kw">fn </span>chroma_sampling_dimensions() {
<a href=#301 id=301 data-nosnippet>301</a> <span class="kw">let </span>tests = [
<a href=#302 id=302 data-nosnippet>302</a> ((<span class="number">1024</span>, <span class="number">768</span>), ChromaSampling::Cs444, (<span class="number">1024</span>, <span class="number">768</span>)),
<a href=#303 id=303 data-nosnippet>303</a> ((<span class="number">1024</span>, <span class="number">768</span>), ChromaSampling::Cs422, (<span class="number">512</span>, <span class="number">768</span>)),
<a href=#304 id=304 data-nosnippet>304</a> ((<span class="number">1024</span>, <span class="number">768</span>), ChromaSampling::Cs420, (<span class="number">512</span>, <span class="number">384</span>)),
<a href=#305 id=305 data-nosnippet>305</a> ((<span class="number">1024</span>, <span class="number">768</span>), ChromaSampling::Cs400, (<span class="number">0</span>, <span class="number">0</span>)),
<a href=#306 id=306 data-nosnippet>306</a> <span class="comment">// Check odd width/height
<a href=#307 id=307 data-nosnippet>307</a> </span>((<span class="number">1023</span>, <span class="number">768</span>), ChromaSampling::Cs422, (<span class="number">512</span>, <span class="number">768</span>)),
<a href=#308 id=308 data-nosnippet>308</a> ((<span class="number">1023</span>, <span class="number">767</span>), ChromaSampling::Cs420, (<span class="number">512</span>, <span class="number">384</span>)),
<a href=#309 id=309 data-nosnippet>309</a> ];
<a href=#310 id=310 data-nosnippet>310</a>
<a href=#311 id=311 data-nosnippet>311</a> <span class="kw">for </span>(luma, cs, expected_chroma) <span class="kw">in </span>tests {
<a href=#312 id=312 data-nosnippet>312</a> <span class="kw">let </span>chroma = cs.get_chroma_dimensions(luma.<span class="number">0</span>, luma.<span class="number">1</span>);
<a href=#313 id=313 data-nosnippet>313</a> <span class="macro">assert_eq!</span>(chroma, expected_chroma);
<a href=#314 id=314 data-nosnippet>314</a> }
<a href=#315 id=315 data-nosnippet>315</a> }
<a href=#316 id=316 data-nosnippet>316</a>}
</code></pre></div></section></main></body></html>
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