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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/tiff/src/encoder/compression/deflate.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
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Deleted vendor folder
Diffstat (limited to 'vendor/tiff/src/encoder/compression/deflate.rs')
-rw-r--r--vendor/tiff/src/encoder/compression/deflate.rs83
1 files changed, 0 insertions, 83 deletions
diff --git a/vendor/tiff/src/encoder/compression/deflate.rs b/vendor/tiff/src/encoder/compression/deflate.rs
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--- a/vendor/tiff/src/encoder/compression/deflate.rs
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@@ -1,83 +0,0 @@
-use crate::{encoder::compression::*, tags::CompressionMethod};
-use flate2::{write::ZlibEncoder, Compression as FlateCompression};
-use std::io::Write;
-
-/// The Deflate algorithm used to compress image data in TIFF files.
-#[derive(Debug, Clone, Copy)]
-pub struct Deflate {
- level: FlateCompression,
-}
-
-/// The level of compression used by the Deflate algorithm.
-/// It allows trading compression ratio for compression speed.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
-#[non_exhaustive]
-pub enum DeflateLevel {
- /// The fastest possible compression mode.
- Fast = 1,
- /// The conserative choice between speed and ratio.
- Balanced = 6,
- /// The best compression available with Deflate.
- Best = 9,
-}
-
-impl Default for DeflateLevel {
- fn default() -> Self {
- DeflateLevel::Balanced
- }
-}
-
-impl Deflate {
- /// Create a new deflate compressor with a specific level of compression.
- pub fn with_level(level: DeflateLevel) -> Self {
- Self {
- level: FlateCompression::new(level as u32),
- }
- }
-}
-
-impl Default for Deflate {
- fn default() -> Self {
- Self::with_level(DeflateLevel::default())
- }
-}
-
-impl Compression for Deflate {
- const COMPRESSION_METHOD: CompressionMethod = CompressionMethod::Deflate;
-
- fn get_algorithm(&self) -> Compressor {
- Compressor::Deflate(self.clone())
- }
-}
-
-impl CompressionAlgorithm for Deflate {
- fn write_to<W: Write>(&mut self, writer: &mut W, bytes: &[u8]) -> Result<u64, io::Error> {
- let mut encoder = ZlibEncoder::new(writer, self.level);
- encoder.write_all(bytes)?;
- encoder.try_finish()?;
- Ok(encoder.total_out())
- }
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
- use crate::encoder::compression::tests::TEST_DATA;
- use std::io::Cursor;
-
- #[test]
- fn test_deflate() {
- const EXPECTED_COMPRESSED_DATA: [u8; 64] = [
- 0x78, 0x9C, 0x15, 0xC7, 0xD1, 0x0D, 0x80, 0x20, 0x0C, 0x04, 0xD0, 0x55, 0x6E, 0x02,
- 0xA7, 0x71, 0x81, 0xA6, 0x41, 0xDA, 0x28, 0xD4, 0xF4, 0xD0, 0xF9, 0x81, 0xE4, 0xFD,
- 0xBC, 0xD3, 0x9C, 0x58, 0x04, 0x1C, 0xE9, 0xBD, 0xE2, 0x8A, 0x84, 0x5A, 0xD1, 0x7B,
- 0xE7, 0x97, 0xF4, 0xF8, 0x08, 0x8D, 0xF6, 0x66, 0x21, 0x3D, 0x3A, 0xE4, 0xA9, 0x91,
- 0x3E, 0xAC, 0xF1, 0x98, 0xB9, 0x70, 0x17, 0x13,
- ];
-
- let mut compressed_data = Vec::<u8>::new();
- let mut writer = Cursor::new(&mut compressed_data);
- Deflate::default().write_to(&mut writer, TEST_DATA).unwrap();
- assert_eq!(EXPECTED_COMPRESSED_DATA, compressed_data.as_slice());
- }
-}