tools/guest-diag: tag BGRA capture records as GZF2 fmt 33

sdl_cap.c wrote the same 32 in the GZF2 record format field for every
capture path, so gzf2_video.py's auto mode decoded ARGB8888/X-surface
frames (BGRA byte order on little-endian) as RGBA and swapped red and
blue. Make the field the documented pixel-order tag: 32 = RGBA8 from
the GL swap path (glReadPixels GL_RGBA), 33 = BGRA8 from
SDL_RenderReadPixels(ARGB8888) and X window surfaces; xgrab.c tags its
ZPixmap BGRA records 33 as well.

gzf2_video.py continues to accept both tags (and old all-32 captures
via --pix-fmt bgra), checks ffmpeg/ffprobe before indexing, and keeps
the final resampled endpoint so a 90-frame 60 fps capture encodes as
90 frames instead of 88.

0 files changed, 0 insertions, 0 deletions