mirror of
https://github.com/storytold/craft-libs.git
synced 2026-11-12 11:13:55 +00:00
.CooCoo
fa1a657476
* Add craft-doc: read PhotoCraft, VectorCraft and EffectCraft documents without the apps
A new crate, craft-doc, reads the native files of three apps from bytes:
PhotoCraft .pcraft (a ZIP bundle), VectorCraft .vectorcraft (JSON, plain
or gzip, with the version 4 data after the JSON) and EffectCraft .ecproj
(JSON).
- sniff tells which app wrote a file from its first bytes.
- info gives the format version, the writer the file names, and whether
the version is one the crate reads.
- renditions returns VectorCraft's preview and PDF and PhotoCraft's
thumbnail and composite, when the file has them.
- outline returns PhotoCraft's canvas and layer tree, VectorCraft's
artboards and top-level layers, and EffectCraft's compositions with
their layers.
A file whose version is newer than the crate reads is refused with
Error::TooNew. Limits bound the JSON, each entry, the total bytes
decompressed and the JSON nesting, and each is checked before the bytes
it covers are allocated. ZIP entries are read by a small STORE and
DEFLATE reader in the crate. The crate depends on serde, serde_json,
thiserror and flate2 and builds for wasm32-unknown-unknown.
The tests build every document they read: JSON written by hand, PNG,
ZIP and gzip bytes assembled in the test. doc.yml runs fmt, clippy, the
tests and a wasm32 check.
* ci: do not keep the checkout token in the doc workflow
The checkout step sets persist-credentials: false, as jpeg.yml and media.yml do. No later step in the job uses the token.
* craft-doc: read each format's envelope through its format crate
craft-doc no longer keeps its own copies of the envelope types and
constants. It reads them with craft-pcraft-format (`MANIFEST`,
`FORMAT_VERSION`, `THUMB`, `COMPOSITE`, `check_manifest`),
craft-vectorcraft-format (`Head`, `Image`, `sniff`, `check`, `VERSION`,
`BLOB_MAGIC`, base64) and craft-ecproj-format (`Head::read`,
`SCHEMA_VERSION`). Its own base64 module is removed. A `.pcraft`
manifest is still read in one pass without building a
`serde_json::Value`, with the checks `read_manifest` applies. The
outlines are still read with craft-doc's read-only views of each
document, and the public API (`sniff`, `info`, `renditions`, `outline`,
`Limits`) does not change.
These inputs are now read as the format crates read them:
- A `.pcraft` manifest without `generator`, or with a `thumbnail` other
than `thumb.png` or a `composite` other than `composite/preview.png`,
is malformed for `renditions` and `outline`; `info` still reports its
version. A manifest with more than 4,194,304 JSON items is refused
with `LimitExceeded`.
- A `.vectorcraft` preview or PDF member without `mime` gives no
rendition.
- `sniff` takes `format` only from a top-level member, so
`{"meta":{"format":"vectorcraft"}}` is not a VectorCraft file.
tests/envelopes.rs writes a file of each format with the crates' types
and reads it through every call, and checks the inputs above.
doc.yml also runs when one of the three crates changes.
* craft-doc: sniff reads only top-level members of an EffectCraft project
`sniff` took any JSON object whose first member is `savedBy` for an
EffectCraft project when `"schema"` appeared anywhere in its first
bytes, so `{"savedBy":"1.0","metadata":{"schema":1}}` was claimed. It
now checks the top-level member names only, one at a time, without
keeping them.
* craft-doc: bound list elements with max_items; no rendition without a MIME type
Limits gains max_items (default 1,048,576): EffectCraft project items and
composition layers, VectorCraft artboards and layers, and PhotoCraft layers
at every level are counted before each one is read, and a file that lists
more gives Error::LimitExceeded. A list of empty objects within max_json no
longer expands into gigabytes of layers.
A VectorCraft preview or pdf member with an empty mime gives no rendition, as
one without a mime does; a preview may be PNG or JPEG. An EffectCraft
composition without a duration or a frame rate gets no timing instead of a
duration of 0.
223 lines
9.7 KiB
Rust
223 lines
9.7 KiB
Rust
//! Synthetic documents built from scratch for the tests: hand-written JSON, a small literal PDF,
|
||
//! PNG files encoded here, ZIP archives and gzip streams assembled here.
|
||
#![allow(dead_code)]
|
||
|
||
use std::io::Write;
|
||
|
||
/// A one-page PDF with an empty page.
|
||
pub const PDF: &[u8] = b"%PDF-1.7\n1 0 obj\n<< /Type /Catalog /Pages 2 0 R >>\nendobj\n2 0 obj\n<< /Type /Pages /Kids [3 0 R] /Count 1 >>\nendobj\n3 0 obj\n<< /Type /Page /Parent 2 0 R /MediaBox [0 0 72 72] >>\nendobj\ntrailer\n<< /Root 1 0 R >>\n%%EOF\n";
|
||
|
||
pub const BLOB_MAGIC: &[u8] = b"\n\0VCBLOBS\0";
|
||
|
||
pub fn gzip(bytes: &[u8]) -> Vec<u8> {
|
||
let mut gz = flate2::write::GzEncoder::new(Vec::new(), flate2::Compression::default());
|
||
gz.write_all(bytes).unwrap();
|
||
gz.finish().unwrap()
|
||
}
|
||
|
||
pub fn deflate(bytes: &[u8]) -> Vec<u8> {
|
||
let mut d = flate2::write::DeflateEncoder::new(Vec::new(), flate2::Compression::default());
|
||
d.write_all(bytes).unwrap();
|
||
d.finish().unwrap()
|
||
}
|
||
|
||
pub fn crc32(bytes: &[u8]) -> u32 {
|
||
let mut c = flate2::Crc::new();
|
||
c.update(bytes);
|
||
c.sum()
|
||
}
|
||
|
||
pub fn base64(data: &[u8]) -> String {
|
||
const A: &[u8; 64] = b"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
||
let mut out = String::new();
|
||
for c in data.chunks(3) {
|
||
let n = (u32::from(c[0]) << 16) | (u32::from(*c.get(1).unwrap_or(&0)) << 8) | u32::from(*c.get(2).unwrap_or(&0));
|
||
out.push(A[(n >> 18) as usize & 63] as char);
|
||
out.push(A[(n >> 12) as usize & 63] as char);
|
||
out.push(if c.len() > 1 { A[(n >> 6) as usize & 63] as char } else { '=' });
|
||
out.push(if c.len() > 2 { A[n as usize & 63] as char } else { '=' });
|
||
}
|
||
out
|
||
}
|
||
|
||
/// A gray `w` × `h` PNG with every pixel `value`.
|
||
pub fn png(w: u32, h: u32, value: u8) -> Vec<u8> {
|
||
fn chunk(out: &mut Vec<u8>, kind: &[u8; 4], data: &[u8]) {
|
||
out.extend((data.len() as u32).to_be_bytes());
|
||
let mut body = kind.to_vec();
|
||
body.extend(data);
|
||
out.extend(&body);
|
||
out.extend(crc32(&body).to_be_bytes());
|
||
}
|
||
let mut ihdr = w.to_be_bytes().to_vec();
|
||
ihdr.extend(h.to_be_bytes());
|
||
ihdr.extend([8, 0, 0, 0, 0]);
|
||
let mut raw = vec![];
|
||
for _ in 0..h {
|
||
raw.push(0);
|
||
raw.extend(std::iter::repeat_n(value, w as usize));
|
||
}
|
||
let mut z = flate2::write::ZlibEncoder::new(Vec::new(), flate2::Compression::default());
|
||
z.write_all(&raw).unwrap();
|
||
let mut out = b"\x89PNG\r\n\x1a\n".to_vec();
|
||
chunk(&mut out, b"IHDR", &ihdr);
|
||
chunk(&mut out, b"IDAT", &z.finish().unwrap());
|
||
chunk(&mut out, b"IEND", &[]);
|
||
out
|
||
}
|
||
|
||
/// One ZIP entry: its name, its bytes, and whether it is DEFLATE-compressed.
|
||
pub struct Entry<'a> {
|
||
pub name: &'a str,
|
||
pub data: &'a [u8],
|
||
pub deflate: bool,
|
||
}
|
||
|
||
pub fn store<'a>(name: &'a str, data: &'a [u8]) -> Entry<'a> {
|
||
Entry { name, data, deflate: false }
|
||
}
|
||
|
||
pub fn deflated<'a>(name: &'a str, data: &'a [u8]) -> Entry<'a> {
|
||
Entry { name, data, deflate: true }
|
||
}
|
||
|
||
/// A ZIP archive of `entries`, in order, with a central directory and an end record.
|
||
pub fn zip(entries: &[Entry]) -> Vec<u8> {
|
||
let mut out = vec![];
|
||
let mut central = vec![];
|
||
for e in entries {
|
||
let payload = if e.deflate { deflate(e.data) } else { e.data.to_vec() };
|
||
let crc = crc32(e.data);
|
||
let method: u16 = if e.deflate { 8 } else { 0 };
|
||
let offset = out.len() as u32;
|
||
let fields = |out: &mut Vec<u8>| {
|
||
out.extend(20u16.to_le_bytes());
|
||
out.extend(0x0800u16.to_le_bytes());
|
||
out.extend(method.to_le_bytes());
|
||
out.extend(0u16.to_le_bytes());
|
||
out.extend(0x21u16.to_le_bytes());
|
||
out.extend(crc.to_le_bytes());
|
||
out.extend((payload.len() as u32).to_le_bytes());
|
||
out.extend((e.data.len() as u32).to_le_bytes());
|
||
out.extend((e.name.len() as u16).to_le_bytes());
|
||
out.extend(0u16.to_le_bytes());
|
||
};
|
||
out.extend(0x0403_4b50u32.to_le_bytes());
|
||
fields(&mut out);
|
||
out.extend(e.name.as_bytes());
|
||
out.extend(&payload);
|
||
central.extend(0x0201_4b50u32.to_le_bytes());
|
||
central.extend(20u16.to_le_bytes());
|
||
fields(&mut central);
|
||
// Comment length, disk, internal and external attributes.
|
||
central.extend([0u8; 10]);
|
||
central.extend(offset.to_le_bytes());
|
||
central.extend(e.name.as_bytes());
|
||
}
|
||
let dir_offset = out.len() as u32;
|
||
out.extend(¢ral);
|
||
out.extend(0x0605_4b50u32.to_le_bytes());
|
||
out.extend([0u8; 4]);
|
||
out.extend((entries.len() as u16).to_le_bytes());
|
||
out.extend((entries.len() as u16).to_le_bytes());
|
||
out.extend((central.len() as u32).to_le_bytes());
|
||
out.extend(dir_offset.to_le_bytes());
|
||
out.extend(0u16.to_le_bytes());
|
||
out
|
||
}
|
||
|
||
/// A VectorCraft document member holding `bytes` as base64.
|
||
pub fn inline(mime: &str, bytes: &[u8]) -> String {
|
||
format!(r#"{{"mime":"{mime}","data":"{}"}}"#, base64(bytes))
|
||
}
|
||
|
||
/// A VectorCraft document member pointing at the data after the JSON.
|
||
pub fn blob(mime: &str, offset: usize, len: usize) -> String {
|
||
format!(r#"{{"mime":"{mime}","blob":[{offset},{len}]}}"#)
|
||
}
|
||
|
||
/// The JSON of a VectorCraft file: `members` go between `generator` and `document`.
|
||
pub fn vectorcraft_json(version: u32, members: &str) -> String {
|
||
let document = r#"{"version":1,"title":"","units":"Points","color_mode":"Rgb",
|
||
"artboards":[{"id":1,"name":"Front","rect":{"x0":0.0,"y0":0.0,"x1":612.0,"y1":792.0},"show_center_mark":false,"show_cross_hairs":false},
|
||
{"id":2,"name":"Back","rect":{"x0":700.0,"y0":800.0,"x1":650.0,"y1":700.0},"show_center_mark":false,"show_cross_hairs":false}],
|
||
"layers":[{"id":1,"name":"Art","kind":{"type":"layer","color":{"Preset":0},"template":false,"printable":true,
|
||
"children":[{"id":3,"kind":{"type":"group","children":[{"id":4,"kind":{"type":"path","path":{"subpaths":[]}}}]}}]}},
|
||
{"id":2,"name":"Notes","visible":false,"opacity":0.5,"blend":"Multiply","kind":{"type":"layer","color":{"Preset":1},"template":false,"printable":false,"children":[]}}],
|
||
"next_id":5}"#;
|
||
let sep = if members.is_empty() { "" } else { "," };
|
||
format!(r#"{{"format":"vectorcraft","version":{version},"generator":"VectorCraft 0.1.0"{sep}{members},"document":{document},"images":{{}}}}"#)
|
||
}
|
||
|
||
/// A PhotoCraft layer as the manifest writes it.
|
||
pub fn pcraft_layer(name: &str, visible: bool, blend: &str, opacity: f32, content: &str) -> String {
|
||
format!(
|
||
r#"{{"id":1,"name":"{name}","visible":{visible},"locks":{{}},"blend":"{blend}","opacity":{opacity},"fill_opacity":1.0,"clipped":false,"mask":null,
|
||
"effects":{{"enabled":true,"items":[],"psd_raw":null}},"label":"None","content":{content},"psd_blocks":[],"psd_id":null,"fill_cache":null}}"#
|
||
)
|
||
}
|
||
|
||
pub fn raster() -> &'static str {
|
||
r#"{"kind":"raster","surface":{"format":{"mode":"Rgb","sample":"U8","alpha":true},"default":"00000000","tiles":[]}}"#
|
||
}
|
||
|
||
/// A PhotoCraft manifest with `layers` (a JSON array) and the preview paths given.
|
||
pub fn pcraft_manifest(version: u32, layers: &str, previews: &str) -> String {
|
||
format!(
|
||
r#"{{"format_version":{version},"generator":"photocraft-format 0.1.0",
|
||
"document":{{"id":1,"name":"Untitled","size":{{"width":640,"height":480}},"resolution_dpi":300.0,"mode":"Rgb","depth":"U16",
|
||
"icc_profile":null,"layers":{layers},"channels":[],"guides":{{}},"selection":null,"metadata":{{}},"global_light":{{}}}}{previews}}}"#
|
||
)
|
||
}
|
||
|
||
/// A `.pcraft` bundle: a tile, the previews, and the manifest last.
|
||
pub fn pcraft(thumb: &[u8], composite: &[u8]) -> Vec<u8> {
|
||
let layers = format!(
|
||
"[{},{}]",
|
||
pcraft_layer("Background", true, "Normal", 1.0, raster()),
|
||
pcraft_layer(
|
||
"Group",
|
||
false,
|
||
"Screen",
|
||
0.25,
|
||
&format!(r#"{{"kind":"group","expanded":true,"children":[{}]}}"#, pcraft_layer("Inner", true, "Multiply", 0.5, raster()))
|
||
)
|
||
);
|
||
let manifest = pcraft_manifest(1, &layers, r#","thumbnail":"thumb.png","composite":"composite/preview.png""#);
|
||
zip(&[
|
||
store("tiles/0123.zst", b"not really zstd"),
|
||
store("thumb.png", thumb),
|
||
deflated("composite/preview.png", composite),
|
||
deflated("manifest.json", manifest.as_bytes()),
|
||
])
|
||
}
|
||
|
||
/// An EffectCraft project with a folder, a footage item and two compositions.
|
||
pub fn ecproj(schema: u32) -> String {
|
||
format!(
|
||
r#"{{
|
||
"savedBy": "0.12.0",
|
||
"activeComp": 10,
|
||
"schema": {schema},
|
||
"settings": {{}},
|
||
"items": {{
|
||
"1": {{"id": 1, "name": "Footage", "label": 0, "kind": {{"type": "Folder"}}}},
|
||
"2": {{"id": 2, "name": "clip.mov", "label": 0, "parent": 1,
|
||
"kind": {{"type": "Footage", "path": "clip.mov", "kind": "Video", "width": 640, "height": 360, "pixel_aspect": 1.0,
|
||
"frame_rate": {{"num": 30, "den": 1}}, "duration": 2540160000000}}}},
|
||
"10": {{"id": 10, "name": "Main", "label": 0,
|
||
"kind": {{"type": "Comp", "width": 1920, "height": 1080, "pixel_aspect": 1.0, "frame_rate": {{"num": 24000, "den": 1001}},
|
||
"duration": 1270080000000, "display_start": 0, "background": [0.0, 0.0, 0.0], "work_area": [0, 1270080000000],
|
||
"layers": [
|
||
{{"id": 1, "name": "Title", "source": {{"type": "Text"}}, "switches": {{"video": true, "audio": false}}, "blend_mode": "Add"}},
|
||
{{"id": 2, "name": "Plate", "source": {{"type": "Footage", "item": 2}}, "switches": {{"video": false, "audio": true}}, "blend_mode": "Normal"}}
|
||
]}}}},
|
||
"3": {{"id": 3, "name": "Intro", "label": 0,
|
||
"kind": {{"type": "Comp", "width": 640, "height": 360, "pixel_aspect": 1.0, "frame_rate": {{"num": 30, "den": 1}},
|
||
"duration": 254016000000, "layers": []}}}}
|
||
}},
|
||
"next_id": 11
|
||
}}"#
|
||
)
|
||
}
|