fuzzers: add new fuzzer targets

[kasper93]

fuzzer_set_property.c:

fuzz mpv_set_property in both initialized and non-initialized state. Useful for user provided values sanitization test. I've already seen some memory leaks in parsing code, good to drill it.

fuzzer_loadfile.c:

mpv_command "loadfile" test. Good for testing demuxers, decoding and playback loop. Sadly in headless mode we can't really test AO and VO, but at least all the code around can be fuzzed. Especially our custom demuxers like demux_mkv.

fuzzer_loadfile_direct.c:

Similar to loadfile above, but instead of saving the data to file, it passes the fuzz intput in the command. Generated protocol specific versions (mf:// and memory:// for now) and generic one.

Nothing really complex, but good start and even those few targets should give good coverage of the most common code paths in libmpv.

[kasper93]

Updated fuzzer_set_property with some test files to test also effect of some of the properties.

[github-actions[bot]]

Download the artifacts for this pull request:

Windows

• mpv-i686-w64-mingw32
• mpv-x86_64-w64-mingw32

macOS

• mpv-macos-14-arm
• mpv-macos-13-intel
• mpv-macos-12-intel

[kasper93]

There were no comments on this, let's merge this, can be always improved. Works well on my side.