Commit Graph
6 Commits
Author SHA1 Message Date
libretroadmin d56b453891 Replace zlib, zstd, libchdr, libzip and libpng with libretro-common
Deflate, zlib and gzip streams go through rinflate and rdeflate, zstd
through rzstd, CHD images through rchd, zip archives through
rzip_archive and PNG through rpng. The bundled libraries, their build
glue and the system-library options are gone; adler32 and uncompress
keep zlib's ABI for the prebuilt FFmpeg archives that still call them.
libretro-common is one CMake library that the core, the headless tool
and the unit tests all link.

The reads take shorter paths on the way. CHD decodes straight from the
loader's reads and a range of blocks at a time, and a file read at any
alignment decodes into place; CSO keeps one inflate stream instead of
one per block; a plain ISO serves a file read with one read of its exact
bytes; a stored zip member is read in place and a deflated one through
restart points rather than a copy of the whole image in memory; zip
members decode into the caller's buffer; sequential reads through the
frontend's VFS skip the seek, which also keeps its buffering.

libretro/test reads one image as ISO, CSO, CHD and zip through the block
devices, boots each, and checks the codecs against Python-made vectors;
a CI job runs it.
2026-10-08 14:14:38 +02:00
Henrik Rydgård a7b1b319ce Limit PNG decode dimensions to prevent decompression bombs
pngLoadPtr allocated the decoded buffer directly from attacker-controlled
PNG IHDR dimensions with no upper bound, so browsing a crafted game icon
or savedata could trigger a multi-gigabyte allocation.

- Add maxWidth/maxHeight parameters to pngLoadPtr (default 8192x8192)
  and reject images larger than the limits.
- Thread the limits through LoadTextureLevelsFromFileData,
  CreateTextureFromFileData, and CreateTextureFromFile.
- Limit game icons to 256x128 in GameInfoCache and IconCache.
2026-08-01 11:41:24 +02:00
Henrik Rydgård 947ddf865f Extract some duplicated code into a pngSave function 2025-09-15 11:46:54 -06:00
Henrik Rydgård c4652d30e2 Address feedback 2023-03-08 08:29:23 +01:00
Henrik Rydgård 76c6058abe Texture replacer: Faster way to get width/height from a png 2023-03-07 22:20:56 +01:00
Henrik Rydgård 4f43cff5ca Move fileutil, net, image loaders, ui to Common. (#13506)
* Move and rename file_util/fd_util to Common/File/FileUtil and DirListing

Let's also move net while we're at it.

Move the ZIM/PNG loaders over to Common.

Move the UI framework into Common

iOS buildfix

* Buildfix

* Buildfixes

* Apple buildfix

* This typo again..

* UWP buildfix

* Fix build of PPSSPPQt, such as it is (it's not in good condition...)

* Guess what? Another buildfix.
2020-10-04 20:48:47 +02:00