include/daedalus.h: stable C API surface exposing the 5 cycles
(VP9 IDCT 8x8, LPF wd=4, MC 8h, LPF wd=8; AV1 CDEF). Per-kernel
recipe-dispatch helpers default to the cycle 1-5 verdict
substrate (QPU for cycles 1+2+4, CPU for cycles 3+5); explicit
override available for benchmarking and runtime-aware scheduling.
src/daedalus_core.c: NEON-path implementation of all 5 kernels
wrapped behind the public API. QPU path stubbed out (returns -1)
since wiring v3d_runner into daedalus_ctx is the next Phase 8
sub-step; with has_qpu=0 the recipe falls back to CPU cleanly.
tests/test_api_idct.c: 64-block IDCT through the public recipe
dispatch, bit-exact vs C ref. PASS 4096/4096 bytes — proves the
API surface compiles, library links, dispatch routing works, and
NEON fallback delivers correct results.
docs/phase8_scoping.md: architecture options (A=userspace V4L2,
B=kernel V4L2 shim, C=direct libva); pick A for v1; explicitly
out-of-scope work tracked.
Next Phase 8 sub-step: wire v3d_runner into daedalus_ctx so
has_qpu=1 and QPU dispatch goes through the API too. After that:
V4L2 ioctl glue, bitstream parser, superblock loop.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
