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author | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
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committer | Valentin Popov <valentin@popov.link> | 2024-07-19 15:37:58 +0300 |
commit | a990de90fe41456a23e58bd087d2f107d321f3a1 (patch) | |
tree | 15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/tiff/src/encoder/compression/lzw.rs | |
parent | 3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff) | |
download | fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip |
Deleted vendor folder
Diffstat (limited to 'vendor/tiff/src/encoder/compression/lzw.rs')
-rw-r--r-- | vendor/tiff/src/encoder/compression/lzw.rs | 47 |
1 files changed, 0 insertions, 47 deletions
diff --git a/vendor/tiff/src/encoder/compression/lzw.rs b/vendor/tiff/src/encoder/compression/lzw.rs deleted file mode 100644 index 0e0f2aa..0000000 --- a/vendor/tiff/src/encoder/compression/lzw.rs +++ /dev/null @@ -1,47 +0,0 @@ -use crate::{encoder::compression::*, tags::CompressionMethod}; -use std::io::Write; -use weezl::encode::Encoder as LZWEncoder; - -/// The LZW algorithm used to compress image data in TIFF files. -#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)] -pub struct Lzw; - -impl Compression for Lzw { - const COMPRESSION_METHOD: CompressionMethod = CompressionMethod::LZW; - - fn get_algorithm(&self) -> Compressor { - Compressor::Lzw(*self) - } -} - -impl CompressionAlgorithm for Lzw { - fn write_to<W: Write>(&mut self, writer: &mut W, bytes: &[u8]) -> Result<u64, io::Error> { - let mut encoder = LZWEncoder::with_tiff_size_switch(weezl::BitOrder::Msb, 8); - let result = encoder.into_stream(writer).encode_all(bytes); - let byte_count = result.bytes_written as u64; - result.status.map(|_| byte_count) - } -} - -#[cfg(test)] -mod tests { - use super::*; - use crate::encoder::compression::tests::TEST_DATA; - use std::io::Cursor; - - #[test] - fn test_lzw() { - const EXPECTED_COMPRESSED_DATA: [u8; 63] = [ - 0x80, 0x15, 0x0D, 0x06, 0x93, 0x98, 0x82, 0x08, 0x20, 0x30, 0x88, 0x0E, 0x67, 0x43, - 0x91, 0xA4, 0xDC, 0x67, 0x10, 0x19, 0x8D, 0xE7, 0x21, 0x01, 0x8C, 0xD0, 0x65, 0x31, - 0x9A, 0xE1, 0xD1, 0x03, 0xB1, 0x86, 0x1A, 0x6F, 0x3A, 0xC1, 0x4C, 0x66, 0xF3, 0x69, - 0xC0, 0xE4, 0x65, 0x39, 0x9C, 0xCD, 0x26, 0xF3, 0x74, 0x20, 0xD8, 0x67, 0x89, 0x9A, - 0x4E, 0x86, 0x83, 0x69, 0xCC, 0x5D, 0x01, - ]; - - let mut compressed_data = Vec::<u8>::new(); - let mut writer = Cursor::new(&mut compressed_data); - Lzw::default().write_to(&mut writer, TEST_DATA).unwrap(); - assert_eq!(EXPECTED_COMPRESSED_DATA, compressed_data.as_slice()); - } -} |