eliott/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird synced 2026-04-26 09:45:06 +02:00
Code Issues Packages Projects Releases Wiki Activity

LibGfx/JPEG2000: Add two spec comments

Browse Source
This commit is contained in:
Nico Weber
2024-04-08 21:17:11 -04:00
committed by Tim Flynn
parent 7b7ef7dcc7
commit 0df01dea4a
Notes: sideshowbarker 2024-07-17 09:49:33 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/0df01dea4a
Pull-request: https://github.com/SerenityOS/serenity/pull/23901
Reviewed-by: https://github.com/trflynn89 ✅
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
Userland/Libraries/LibGfx/ImageFormats/JPEG2000Loader.cpp
View File

@@ -555,11 +555,14 @@ static ErrorOr<void> parse_codestream_main_header(JPEG2000LoadingContext& contex
}
case J2K_SOT: {
// SOT terminates the main header.
// A.4.2: "There shall be at least one SOT in a codestream."
if (!saw_COD_marker)
return Error::from_string_literal("JPEG2000ImageDecoderPlugin: Required COD marker not present in main header");
if (!saw_QCD_marker)
return Error::from_string_literal("JPEG2000ImageDecoderPlugin: Required QCD marker not present in main header");
// A.6.4: "there is not necessarily a correspondence with the number of sub-bands present because the sub-bands
// can be truncated with no requirement to correct [the QCD] marker segment."
size_t step_sizes_count = context.qcd.step_sizes.visit(
[](Empty) -> size_t { VERIFY_NOT_REACHED(); },
[](Vector<QuantizationDefault::ReversibleStepSize> const& step_sizes) { return step_sizes.size(); },