| <!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 `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/jpeg-decoder-0.1.22/src/marker.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>marker.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../jpeg_decoder/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../jpeg_decoder/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Table B.1 |
| </span><span class="attribute">#[derive(Clone, Copy, Debug, PartialEq)] |
| </span><span class="kw">pub enum </span>Marker { |
| <span class="doccomment">/// Start Of Frame markers |
| /// |
| /// - SOF(0): Baseline DCT (Huffman coding) |
| /// - SOF(1): Extended sequential DCT (Huffman coding) |
| /// - SOF(2): Progressive DCT (Huffman coding) |
| /// - SOF(3): Lossless (sequential) (Huffman coding) |
| /// - SOF(5): Differential sequential DCT (Huffman coding) |
| /// - SOF(6): Differential progressive DCT (Huffman coding) |
| /// - SOF(7): Differential lossless (sequential) (Huffman coding) |
| /// - SOF(9): Extended sequential DCT (arithmetic coding) |
| /// - SOF(10): Progressive DCT (arithmetic coding) |
| /// - SOF(11): Lossless (sequential) (arithmetic coding) |
| /// - SOF(13): Differential sequential DCT (arithmetic coding) |
| /// - SOF(14): Differential progressive DCT (arithmetic coding) |
| /// - SOF(15): Differential lossless (sequential) (arithmetic coding) |
| </span>SOF(u8), |
| <span class="doccomment">/// Reserved for JPEG extensions |
| </span>JPG, |
| <span class="doccomment">/// Define Huffman table(s) |
| </span>DHT, |
| <span class="doccomment">/// Define arithmetic coding conditioning(s) |
| </span>DAC, |
| <span class="doccomment">/// Restart with modulo 8 count `m` |
| </span>RST(u8), |
| <span class="doccomment">/// Start of image |
| </span>SOI, |
| <span class="doccomment">/// End of image |
| </span>EOI, |
| <span class="doccomment">/// Start of scan |
| </span>SOS, |
| <span class="doccomment">/// Define quantization table(s) |
| </span>DQT, |
| <span class="doccomment">/// Define number of lines |
| </span>DNL, |
| <span class="doccomment">/// Define restart interval |
| </span>DRI, |
| <span class="doccomment">/// Define hierarchical progression |
| </span>DHP, |
| <span class="doccomment">/// Expand reference component(s) |
| </span>EXP, |
| <span class="doccomment">/// Reserved for application segments |
| </span>APP(u8), |
| <span class="doccomment">/// Reserved for JPEG extensions |
| </span>JPGn(u8), |
| <span class="doccomment">/// Comment |
| </span>COM, |
| <span class="doccomment">/// For temporary private use in arithmetic coding |
| </span>TEM, |
| <span class="doccomment">/// Reserved |
| </span>RES, |
| } |
| |
| <span class="kw">impl </span>Marker { |
| <span class="kw">pub fn </span>has_length(<span class="self">self</span>) -> bool { |
| <span class="kw">use </span><span class="self">self</span>::Marker::<span class="kw-2">*</span>; |
| <span class="kw">match </span><span class="self">self </span>{ |
| RST(..) | SOI | EOI | TEM => <span class="bool-val">false</span>, |
| <span class="kw">_ </span>=> <span class="bool-val">true</span>, |
| } |
| } |
| |
| <span class="kw">pub fn </span>from_u8(n: u8) -> <span class="prelude-ty">Option</span><Marker> { |
| <span class="kw">use </span><span class="self">self</span>::Marker::<span class="kw-2">*</span>; |
| <span class="kw">match </span>n { |
| <span class="number">0x00 </span>=> <span class="prelude-val">None</span>, <span class="comment">// Byte stuffing |
| </span><span class="number">0x01 </span>=> <span class="prelude-val">Some</span>(TEM), |
| <span class="number">0x02 </span>..= <span class="number">0xBF </span>=> <span class="prelude-val">Some</span>(RES), |
| <span class="number">0xC0 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">0</span>)), |
| <span class="number">0xC1 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">1</span>)), |
| <span class="number">0xC2 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">2</span>)), |
| <span class="number">0xC3 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">3</span>)), |
| <span class="number">0xC4 </span>=> <span class="prelude-val">Some</span>(DHT), |
| <span class="number">0xC5 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">5</span>)), |
| <span class="number">0xC6 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">6</span>)), |
| <span class="number">0xC7 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">7</span>)), |
| <span class="number">0xC8 </span>=> <span class="prelude-val">Some</span>(JPG), |
| <span class="number">0xC9 </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">9</span>)), |
| <span class="number">0xCA </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">10</span>)), |
| <span class="number">0xCB </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">11</span>)), |
| <span class="number">0xCC </span>=> <span class="prelude-val">Some</span>(DAC), |
| <span class="number">0xCD </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">13</span>)), |
| <span class="number">0xCE </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">14</span>)), |
| <span class="number">0xCF </span>=> <span class="prelude-val">Some</span>(SOF(<span class="number">15</span>)), |
| <span class="number">0xD0 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">0</span>)), |
| <span class="number">0xD1 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">1</span>)), |
| <span class="number">0xD2 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">2</span>)), |
| <span class="number">0xD3 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">3</span>)), |
| <span class="number">0xD4 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">4</span>)), |
| <span class="number">0xD5 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">5</span>)), |
| <span class="number">0xD6 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">6</span>)), |
| <span class="number">0xD7 </span>=> <span class="prelude-val">Some</span>(RST(<span class="number">7</span>)), |
| <span class="number">0xD8 </span>=> <span class="prelude-val">Some</span>(SOI), |
| <span class="number">0xD9 </span>=> <span class="prelude-val">Some</span>(EOI), |
| <span class="number">0xDA </span>=> <span class="prelude-val">Some</span>(SOS), |
| <span class="number">0xDB </span>=> <span class="prelude-val">Some</span>(DQT), |
| <span class="number">0xDC </span>=> <span class="prelude-val">Some</span>(DNL), |
| <span class="number">0xDD </span>=> <span class="prelude-val">Some</span>(DRI), |
| <span class="number">0xDE </span>=> <span class="prelude-val">Some</span>(DHP), |
| <span class="number">0xDF </span>=> <span class="prelude-val">Some</span>(EXP), |
| <span class="number">0xE0 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">0</span>)), |
| <span class="number">0xE1 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">1</span>)), |
| <span class="number">0xE2 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">2</span>)), |
| <span class="number">0xE3 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">3</span>)), |
| <span class="number">0xE4 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">4</span>)), |
| <span class="number">0xE5 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">5</span>)), |
| <span class="number">0xE6 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">6</span>)), |
| <span class="number">0xE7 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">7</span>)), |
| <span class="number">0xE8 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">8</span>)), |
| <span class="number">0xE9 </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">9</span>)), |
| <span class="number">0xEA </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">10</span>)), |
| <span class="number">0xEB </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">11</span>)), |
| <span class="number">0xEC </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">12</span>)), |
| <span class="number">0xED </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">13</span>)), |
| <span class="number">0xEE </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">14</span>)), |
| <span class="number">0xEF </span>=> <span class="prelude-val">Some</span>(APP(<span class="number">15</span>)), |
| <span class="number">0xF0 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">0</span>)), |
| <span class="number">0xF1 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">1</span>)), |
| <span class="number">0xF2 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">2</span>)), |
| <span class="number">0xF3 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">3</span>)), |
| <span class="number">0xF4 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">4</span>)), |
| <span class="number">0xF5 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">5</span>)), |
| <span class="number">0xF6 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">6</span>)), |
| <span class="number">0xF7 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">7</span>)), |
| <span class="number">0xF8 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">8</span>)), |
| <span class="number">0xF9 </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">9</span>)), |
| <span class="number">0xFA </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">10</span>)), |
| <span class="number">0xFB </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">11</span>)), |
| <span class="number">0xFC </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">12</span>)), |
| <span class="number">0xFD </span>=> <span class="prelude-val">Some</span>(JPGn(<span class="number">13</span>)), |
| <span class="number">0xFE </span>=> <span class="prelude-val">Some</span>(COM), |
| <span class="number">0xFF </span>=> <span class="prelude-val">None</span>, <span class="comment">// Fill byte |
| </span>} |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="jpeg_decoder" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
