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| author | Genny <gen@nyble.dev> | 2022-08-23 11:44:00 -0500 |
|---|---|---|
| committer | Genny <gen@nyble.dev> | 2022-08-23 11:44:00 -0500 |
| commit | 20ee6b267bc5ef384db9ecf37ae2969aadf5b082 (patch) | |
| tree | bd3d037a8b6d1741e25274e21e8f4b503387d80e | |
| parent | 6e12de4faa129ebe0f0e46ede46c1780bb23a315 (diff) | |
| download | gifed-20ee6b267bc5ef384db9ecf37ae2969aadf5b082.tar.gz gifed-20ee6b267bc5ef384db9ecf37ae2969aadf5b082.zip | |
Use weezl for LZW encoding 😔
| -rw-r--r-- | gifed/src/block/indexedimage.rs | 8 | ||||
| -rw-r--r-- | gifed/src/block/mod.rs | 12 |
2 files changed, 18 insertions, 2 deletions
diff --git a/gifed/src/block/indexedimage.rs b/gifed/src/block/indexedimage.rs index 8834d33..730a02c 100644 --- a/gifed/src/block/indexedimage.rs +++ b/gifed/src/block/indexedimage.rs @@ -1,5 +1,7 @@ use std::convert::TryFrom; +use weezl::encode::Encoder; + use super::{ColorTable, ImageDescriptor}; use crate::LZW; @@ -49,7 +51,11 @@ impl IndexedImage { // First write out the MCS out.push(mcs); - let compressed = LZW::encode(mcs, &self.indicies); + //FIXME: gen- This seems broken + //let compressed = LZW::encode(mcs, &self.indicies); + let compressed = Encoder::new(weezl::BitOrder::Lsb, mcs) + .encode(&self.indicies) + .unwrap(); for chunk in compressed.chunks(255) { out.push(chunk.len() as u8); diff --git a/gifed/src/block/mod.rs b/gifed/src/block/mod.rs index 31e78b1..28f8c86 100644 --- a/gifed/src/block/mod.rs +++ b/gifed/src/block/mod.rs @@ -62,7 +62,17 @@ fn encode_extension(block: &Block) -> Box<[u8]> { vec.push(gce.transparency_index); } Block::CommentExtension(comment) => todo!(), - Block::ApplicationExtension(app) => todo!(), + Block::ApplicationExtension(app) => { + vec.push(0xFF); // Application extension label + vec.push(0x0B); // 11 bytes, fixed, for the ident and auth + vec.extend_from_slice(&app.identifier); + vec.extend_from_slice(&app.authentication_code); + + for chnk in app.data.chunks(255) { + vec.push(chnk.len() as u8); + vec.extend_from_slice(chnk); + } + } Block::LoopingExtension(lc) => { vec.push(0xFF); // Application extension label vec.push(0x0B); // 11 bytes in this block |