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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/gif/src/lib.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
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-//! # GIF en- and decoding library [![Build Status](https://github.com/image-rs/image-gif/workflows/Rust%20CI/badge.svg)](https://github.com/image-rs/image-gif/actions)
-//!
-//! GIF en- and decoder written in Rust ([API Documentation](https://docs.rs/gif)).
-//!
-//! # GIF encoding and decoding library
-//!
-//! This library provides all functions necessary to de- and encode GIF files.
-//!
-//! ## High level interface
-//!
-//! The high level interface consists of the two types
-//! [`Encoder`](struct.Encoder.html) and [`Decoder`](struct.Decoder.html).
-//!
-//! ### Decoding GIF files
-//!
-//! ```rust
-//! // Open the file
-//! use std::fs::File;
-//! let mut decoder = gif::DecodeOptions::new();
-//! // Configure the decoder such that it will expand the image to RGBA.
-//! decoder.set_color_output(gif::ColorOutput::RGBA);
-//! // Read the file header
-//! let file = File::open("tests/samples/sample_1.gif").unwrap();
-//! let mut decoder = decoder.read_info(file).unwrap();
-//! while let Some(frame) = decoder.read_next_frame().unwrap() {
-//! // Process every frame
-//! }
-//! ```
-//!
-//!
-//!
-//! ### Encoding GIF files
-//!
-//! The encoder can be used so save simple computer generated images:
-//!
-//! ```rust
-//! use gif::{Frame, Encoder, Repeat};
-//! use std::fs::File;
-//! use std::borrow::Cow;
-//!
-//! let color_map = &[0xFF, 0xFF, 0xFF, 0, 0, 0];
-//! let (width, height) = (6, 6);
-//! let mut beacon_states = [[
-//! 0, 0, 0, 0, 0, 0,
-//! 0, 1, 1, 0, 0, 0,
-//! 0, 1, 1, 0, 0, 0,
-//! 0, 0, 0, 1, 1, 0,
-//! 0, 0, 0, 1, 1, 0,
-//! 0, 0, 0, 0, 0, 0,
-//! ], [
-//! 0, 0, 0, 0, 0, 0,
-//! 0, 1, 1, 0, 0, 0,
-//! 0, 1, 0, 0, 0, 0,
-//! 0, 0, 0, 0, 1, 0,
-//! 0, 0, 0, 1, 1, 0,
-//! 0, 0, 0, 0, 0, 0,
-//! ]];
-//! let mut image = File::create("tests/samples/beacon.gif").unwrap();;
-//! let mut encoder = Encoder::new(&mut image, width, height, color_map).unwrap();
-//! encoder.set_repeat(Repeat::Infinite).unwrap();
-//! for state in &beacon_states {
-//! let mut frame = Frame::default();
-//! frame.width = width;
-//! frame.height = height;
-//! frame.buffer = Cow::Borrowed(&*state);
-//! encoder.write_frame(&frame).unwrap();
-//! }
-//! ```
-//!
-//! [`Frame::from_*`](struct.Frame.html) can be used to convert a true color image to a paletted
-//! image with a maximum of 256 colors:
-//!
-//! ```rust
-//! # #[cfg(feature = "color_quant")] {
-//! use std::fs::File;
-//!
-//! // Get pixel data from some source
-//! let mut pixels: Vec<u8> = vec![0; 30_000];
-//! // Create frame from data
-//! let frame = gif::Frame::from_rgb(100, 100, &mut *pixels);
-//! // Create encoder
-//! let mut image = File::create("target/indexed_color.gif").unwrap();
-//! let mut encoder = gif::Encoder::new(&mut image, frame.width, frame.height, &[]).unwrap();
-//! // Write frame to file
-//! encoder.write_frame(&frame).unwrap();
-//! # }
-//! ```
-
-// TODO: make this compile
-// ```rust
-// use gif::{Frame, Encoder};
-// use std::fs::File;
-// let color_map = &[0, 0, 0, 0xFF, 0xFF, 0xFF];
-// let mut frame = Frame::default();
-// // Generate checkerboard lattice
-// for (i, j) in (0..10).zip(0..10) {
-// frame.buffer.push(if (i * j) % 2 == 0 {
-// 1
-// } else {
-// 0
-// })
-// }
-// # (|| {
-// {
-// let mut file = File::create("test.gif")?;
-// let mut encoder = Encoder::new(&mut file, 100, 100);
-// encoder.write_global_palette(color_map)?.write_frame(&frame)
-// }
-// # })().unwrap();
-// ```
-#![deny(missing_docs)]
-#![cfg(feature = "std")]
-
-mod traits;
-mod common;
-mod reader;
-mod encoder;
-
-pub use crate::common::{AnyExtension, Block, Extension, DisposalMethod, Frame};
-
-pub use crate::reader::{StreamingDecoder, Decoded, DecodingError, DecodingFormatError};
-/// StreamingDecoder configuration parameters
-pub use crate::reader::{ColorOutput, MemoryLimit, Extensions};
-pub use crate::reader::{DecodeOptions, Decoder, Version};
-
-pub use crate::encoder::{Encoder, ExtensionData, Repeat, EncodingError};
-
-#[cfg(test)]
-#[test]
-fn round_trip() {
- use std::io::prelude::*;
- use std::fs::File;
- let mut data = vec![];
- File::open("tests/samples/sample_1.gif").unwrap().read_to_end(&mut data).unwrap();
- let mut decoder = Decoder::new(&*data).unwrap();
- let palette: Vec<u8> = decoder.palette().unwrap().into();
- let frame = decoder.read_next_frame().unwrap().unwrap();
- let mut data2 = vec![];
- {
- let mut encoder = Encoder::new(&mut data2, frame.width, frame.height, &palette).unwrap();
- encoder.write_frame(frame).unwrap();
- }
- assert_eq!(&data[..], &data2[..])
-}
-
-macro_rules! insert_as_doc {
- { $content:expr } => {
- #[doc = $content] extern { }
- }
-}
-
-// Provides the README.md as doc, to ensure the example works!
-#[cfg(feature = "color_quant")]
-insert_as_doc!(include_str!("../README.md"));