Matrices in an SWF file store their scale/skew components in
in 16.16 format (fbits).
Split `ruffle_core::Matrix` and `swf::Matrix`. `swf::Matrix` now
stores its data as `Fixed16` instead of immediately converting to
`f32`.
When reading an SWF, search for FileAttributes and
SetBackgroundColor and return this along with the header data
because it's useful (in particular, the AS3 flag).
Use the proper types for ColorTransform:
* Fixed8 (8.8) format for multiplicative component
* i16 format for additive component
This matches the behavior of Flash (for example, alpha only changes
in units of 1/256).
* #[derive(Collect)] should be before #[collect]
* Replace redunant `&buf[..]` with `buf`
* Changes most cases of UPPERCase to UpperCase
* Allow upper_case_acronym on most SWF types, as they are from
SWF spec/more annoying to change.
Some SWFs in the wild have PlaceObject tags with ending ClipActions
that are 2 bytes instead of the required 4 bytes (see #2899).
Swallow the error in this case so that the tag can run.
Normally, a hit test on static text will consider the text glyphs.
However, a CSMTextSettings tag can change the text to use the
"advanced rendering engine", which causes hit tests to only consider
the bounds. This is toggled by the "Anti-alias for readibility"
setting in the Flash IDE.
Wire up the CSMTextSettings tag and adjust hit test behavior based
on this flag.
Fixes#2987.
Pure Rust decoder that functions on desktop and wasm.
Enable lzma feature by default.
TODO: Switch to lzma-rs streaming API when stable on crates.io.
Currently decodes entire stream at once.
Rust 12-09 nightly changed the working dir of doctests to be the
workspace root instead of the subcrate root. This broke the
doctests for swf. Now do some setup to ensure the same working
directory on both stable and nightly.
cc https://github.com/rust-lang/cargo/pull/8954
A bitmap fill style ends in a matrix, but the overall type should
still be byte aligned. This could cause certain shapes with bitmap
line styles to be incorrectly parsed. Fixes#1192.
There is a difference between empty/default (change value to default)
and none (don't modify), so make this explicit for some PlaceObject
parameters where it wasn't.
Fixes#1104.
The spec says that StyleChangeRecord is only supported in
DefineShape2+, but SWFs exist with StyleChangeRecord in
DefineShape1 tags, and these play correctly in the Flash Player.
(see #929 HAGIMURA_EXTREME.swf).
401799_pre_Scene_1.swf has a DefineButton2 tag with an invalid
CondActionSize field (it should be at least 4). It's unclear how
Flash handles this. For now, avoid the underflow and return an
error instead.
Fixes#92.
The interpolation and spread modes of morph shape gradients were
not being properly parsed. Fixed this and cleaned up some of the
gradient parsing code.
Some software would export SWFs with a missing LatencySeek field
in SoundStreamHead (e.g., CoffeeCup Firestarter). Silently ignore
this error if the field is missing.
Some SWFs are compressed incorrectly, often with incorrect
compressed/uncompressed lengths, causing the zlib decoders
to vomit if you try to decompress them fully. However, often times
the data still decompresses all the way to the End tag, and we
still want to try to play it even if it's corrupt.
Now these errors only omit a warning, and we'll continue to run
the SWF.
Addresses #86.
Improves the error handling for the swf crate:
* Custom swf::error::Error type added to handle various errors
in SWF parsing.
* Invalid parsing of tags/AVM1 ops results in a Error::ParseError
that can include info about the underlying failure.
* Implement Display for these errors. Output descriptive
names for the tag/opcode when it fails to parse.
* Handle out of bounds reads in avm1::Reader::read_slice.
Previously this would panic, now it returns an io::Error.
Closes#85.
relrelb