marfrit
df339c07fd
Adds pkg-config plumbing so consumers (daedalus-v4l2 daemon for the
upcoming PR-Q3a shadow-mode wiring; the daedalus_decode_h264 CLI when
built outside this tree) can locate libdaedalus_decoder.a + the public
header via pkg_check_modules / pkg-config.
Mirrors daedalus-fourier's relocatable-prefix scheme: prefix is derived
from ${pcfiledir} so cmake --install --prefix /foo produces a .pc that
resolves to /foo at lookup time. Verified across two install prefixes.
daedalus-fourier is declared as a public Requires: because consumers
static-linking libdaedalus_decoder.a also need libdaedalus_core.a in
their link line to resolve the daedalus_ctx_* / daedalus_recipe_*
symbols this archive references.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
daedalus-decoder
Frame-level GPU H.264 decoder for Raspberry Pi 5 / V3D7. Design phase — not implemented yet.
The objective: build the NVDEC-equivalent shape on Pi 5. One Vulkan submit per frame, one fence wait per frame, encoded H.264 bitstream in, NV12 frame out. Reuses daedalus-fourier's V3D compute primitives at the right granularity — not the per-block-call granularity that the kernel-substitution prototype exposed as architecturally wrong.
Sibling projects:
- daedalus-fourier — V3D + NEON kernel pack (IDCT, MC, deblock primitives). Stays as research/microbench artifact.
- daedalus-v4l2 — V4L2 stateless decoder shim + userspace daemon for Pi 5. The eventual consumer of this decoder.
- libva-v4l2-request-fourier — VAAPI ↔ V4L2 stateless bridge. End consumer.
See DESIGN.md for the architecture sketch.