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https://github.com/storytold/craft-libs.git
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Dylan M. Taylor
ee78a9bd46
PhotoCraft's `photocraft-psd` crate (crates/psd at storytold/photocraft 63b641b55e54bf8f5c83efd977fdb16a2c255431) as `craft-psd`: the lossless PSD/PSB model, reader, writer and builder, descriptors, the Photoshop resource files that share its primitives (.abr, .asl, .aco, .act, .ase, .grd, .pat, .atn, .csh, .shc) and the Photoshop blocks of a layered TIFF. The crate had no dependency on any other PhotoCraft crate. Code is unchanged apart from the crate name, craft-libs' rustfmt width, comments that named other PhotoCraft crates, issue references (now `photocraft#N`), and the corpus tests' directory (`CRAFT_PSD_CORPUS` or `corpus/` at the workspace root). Tests, proptests, fuzz targets and fixtures move with it. Part of #778, #786.
40 lines
1.9 KiB
Rust
40 lines
1.9 KiB
Rust
//! Serialization of one 24 MP raw RGB layer in Lr16/Lr32, without compression or disk I/O.
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//! Run with `cargo run --release -p craft-psd --example bench_layer_block`.
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use craft_psd::{ChannelData, ColorMode, Compression, Header, ImageData, LayerInfo, LayerInfoPlacement, LayerRecord, Rect, Result, Version, testgen};
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use std::hint::black_box;
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use std::time::Instant;
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fn main() -> Result<()> {
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for depth in [16, 32] {
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let mut file = testgen::small(Version::Psd, Compression::Raw);
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file.header = Header::new(Version::Psd, 6000, 4000, 3, depth, ColorMode::Rgb);
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let plane_bytes = 6000 * 4000 * usize::from(depth / 8);
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let mut layer = LayerRecord { rect: Rect::from_xywh(0, 0, 6000, 4000), name: b"RGB".to_vec(), ..Default::default() };
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for id in 0..3 {
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layer.channels.push(ChannelData::new(id, Some(Compression::Raw), vec![0; plane_bytes]));
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}
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file.layer_info = Some(LayerInfo { merged_alpha: false, layers: vec![layer], padding: None });
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file.layer_info_placement =
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LayerInfoPlacement::GlobalBlock { index: 0, signature: *b"8BIM", key: if depth == 16 { *b"Lr16" } else { *b"Lr32" }, padding: None };
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file.image_data = ImageData::new(Compression::Raw, vec![0; plane_bytes * 3]);
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black_box(file.to_bytes()?);
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let mut samples = Vec::new();
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let mut size = 0;
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for _ in 0..11 {
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let t = Instant::now();
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let bytes = file.to_bytes()?;
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samples.push(t.elapsed().as_secs_f64() * 1000.0);
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size = bytes.len();
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black_box(bytes);
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}
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samples.sort_by(f64::total_cmp);
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println!(
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"{depth}-bit, {} bytes: p50={:.3} ms p95={:.3} ms",
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size,
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samples.get(5).copied().unwrap_or_default(),
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samples.get(10).copied().unwrap_or_default()
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);
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}
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Ok(())
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}
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