The whole body of tiled_yuv.S is wrapped in #ifndef __aarch64__ — the
ARMv7 NEON Thumb code doesn't assemble on aarch64. On 64-bit ARM the
.S object is therefore empty and tiled_to_planar comes out as an
undefined symbol in the .so, which dlopen rejects at vainfo time:
libva error: dlopen ... failed: undefined symbol: tiled_to_planar
Runtime-wise, tiled_to_planar is only called when
video_format_is_linear() returns false, which only happens for the
sunxi-cedrus DRM_FORMAT_MOD_ALLWINNER_TILED NV12 entry — never on
hantro/rkvdec. So the right fix is a no-op stub on aarch64 just to
satisfy the linker.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This VA backend uses v4l2's Frame API proposal to interface with the
"sunxi-cedrus" video driver on Allwinner SoC. Only a few parts of the
code are really dependent on sunxi-cedrus and this VA backend could be
reused for other v4l drivers using the Frame API.
test0r
Paul Kocialkowski