Compare commits
1 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 marfrit
|
cfeb998ff8 |
-15
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build/
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build-*/
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*.o
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*.a
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*.so
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*.so.*
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*.spv
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.vscode/
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.cache/
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compile_commands.json
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CMakeCache.txt
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CMakeFiles/
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cmake_install.cmake
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Makefile
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.ninja_*
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-248
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# daedalus-decoder — frame-level GPU H.264 decoder for V3D7 (Pi 5).
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# Phase 1 scaffold; see DESIGN.md for architecture.
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#
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# Build dependencies:
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# - daedalus-fourier ≥ 0.1.0 (kernel pack, V3D primitives + recipe layer)
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# resolved via pkg-config; install via the daedalus-fourier upstream
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# `cmake --install` rule (PR #5 made the .pc relocatable, so any
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# install prefix works as long as $PKG_CONFIG_PATH is set).
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# - Vulkan headers + libvulkan (pulled in transitively via
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# daedalus-fourier, listed here explicitly for the link order).
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#
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# Build:
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# cmake -B build -G Ninja -DCMAKE_BUILD_TYPE=Release
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# cmake --build build
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# ctest --test-dir build
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cmake_minimum_required(VERSION 3.20)
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project(daedalus-decoder
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VERSION 0.0.1
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DESCRIPTION "Frame-level GPU H.264 decoder for Raspberry Pi 5 / V3D7"
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LANGUAGES C)
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set(CMAKE_C_STANDARD 11)
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set(CMAKE_C_STANDARD_REQUIRED ON)
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set(CMAKE_C_EXTENSIONS OFF)
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if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Release)
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endif()
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# Pi 5 is the only supported target. Other aarch64 SoCs (Pi 4 V3D4,
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# RK3588 Mali, …) might work but would need explicit substrate +
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# shader-pack validation per the daedalus-fourier architecture
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# backlog. Don't pretend to support what we haven't validated.
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if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64")
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message(WARNING
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"daedalus-decoder is designed for aarch64 (Pi 5 BCM2712 / V3D7). "
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"Build will proceed but is unlikely to function.")
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endif()
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add_compile_options(-Wall -Wextra -Wno-unused-parameter)
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# ---- Dependencies --------------------------------------------------
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find_package(PkgConfig REQUIRED)
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# daedalus-fourier — find_package via pkg-config per the Phase 1
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# decision §9.6. Minimum version 0.1.0 (the cycle 6-9 shaders + pool
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# + recipe-flip baseline). PKG_CONFIG_PATH should point at the
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# directory holding daedalus-fourier.pc (e.g. /usr/local/lib/pkgconfig
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# or a custom install prefix).
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pkg_check_modules(DAEDALUS_FOURIER REQUIRED daedalus-fourier>=0.1.0)
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# Vulkan — daedalus-fourier already depends on this; we add it
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# explicitly so the link order stays correct (daedalus-fourier static
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# archive contains undefined vk* symbols that the loader resolves).
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find_package(Vulkan REQUIRED)
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# ---- Version string baked into the library ------------------------
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# git rev tagged onto the version string for traceability; degrades
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# gracefully to bare semver if git isn't available.
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execute_process(
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COMMAND git -C ${CMAKE_CURRENT_SOURCE_DIR} rev-parse --short=7 HEAD
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OUTPUT_VARIABLE DAEDALUS_DECODER_GITREV
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_QUIET)
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if(DAEDALUS_DECODER_GITREV)
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set(DAEDALUS_DECODER_VERSION "${PROJECT_VERSION}+g${DAEDALUS_DECODER_GITREV}")
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else()
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set(DAEDALUS_DECODER_VERSION "${PROJECT_VERSION}")
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endif()
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message(STATUS "daedalus-decoder version: ${DAEDALUS_DECODER_VERSION}")
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# ---- Library ------------------------------------------------------
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add_library(daedalus_decoder STATIC
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src/daedalus_decoder.c
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)
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target_include_directories(daedalus_decoder
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PUBLIC
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$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
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$<INSTALL_INTERFACE:include>
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PRIVATE
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src
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${DAEDALUS_FOURIER_INCLUDE_DIRS}
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)
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target_link_directories(daedalus_decoder
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PUBLIC
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${DAEDALUS_FOURIER_LIBRARY_DIRS}
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)
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target_link_libraries(daedalus_decoder
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PUBLIC
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# Order matters: daedalus-fourier static archive references
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# vulkan symbols; the loader needs daedalus-fourier first then
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# vulkan to resolve them.
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${DAEDALUS_FOURIER_LIBRARIES}
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Vulkan::Vulkan
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)
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target_compile_definitions(daedalus_decoder
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PRIVATE
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DAEDALUS_DECODER_VERSION="${DAEDALUS_DECODER_VERSION}"
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)
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target_compile_options(daedalus_decoder PRIVATE -O2)
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# ---- Smoke test ---------------------------------------------------
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enable_testing()
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add_executable(test_smoke tests/test_smoke.c)
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target_link_libraries(test_smoke PRIVATE daedalus_decoder)
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target_compile_options(test_smoke PRIVATE -O2)
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add_test(NAME smoke COMMAND test_smoke)
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add_executable(test_idct_bitexact tests/test_idct_bitexact.c)
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target_link_libraries(test_idct_bitexact PRIVATE daedalus_decoder)
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target_compile_options(test_idct_bitexact PRIVATE -O2)
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# 320x240 QVGA — fast inner-loop test (300 MBs, sub-second).
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add_test(NAME idct_bitexact COMMAND test_idct_bitexact)
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# Same QVGA test re-run on the CPU NEON path (forces fallback even on
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# V3D7 hosts). Catches silent drift between the V3D shader and the
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# NEON reference path — both must produce identical output for the
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# same coefficient input. Also keeps the bit-exact gate alive on
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# hosts without V3D7 (CI runners, x86 dev boxes).
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add_test(NAME idct_bitexact_cpu COMMAND test_idct_bitexact 320 240
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0xfeedface5a5a5a5a cpu)
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# 1920x1088 1080p — deployment-scale test (8160 MBs, ~0.25 s on hertz).
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# Validates the per-MB block index + pixel offset math at full coded
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# height (1088, not 1080 — see daedalus_decoder.h on H.264 coded vs
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# displayed dims). Cheap enough to run unconditionally; if it ever
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# gets slow we'll split into a CTest LABEL for opt-in.
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add_test(NAME idct_bitexact_1080p COMMAND test_idct_bitexact 1920 1088)
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# ---- Stage 2 PR-b deblock smoke ------------------------------------
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#
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# Validates flush_frame's per-frame deblock dispatch (luma + chroma,
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# V + H, bS<4 + bS=4 intra — up to 8 dispatches added after IDCT).
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# Strategy: same input through substrate=CPU and substrate=QPU, assert
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# byte-exact match (transitive bit-exact gate — daedalus-fourier's own
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# test_api_h264 already validates each substrate against a C reference,
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# so CPU-QPU equivalence here means both match the spec). Plus an
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# anti-no-op check: run a third pass with edges removed and assert
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# different output, proving deblock actually ran.
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add_executable(test_deblock_smoke tests/test_deblock_smoke.c)
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target_link_libraries(test_deblock_smoke PRIVATE daedalus_decoder)
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target_compile_options(test_deblock_smoke PRIVATE -O2)
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add_test(NAME deblock_smoke COMMAND test_deblock_smoke)
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||||
# ---- Benchmarks (not gated by ctest) ------------------------------
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#
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# Build-time only; user runs them by hand when checking perf. Adding
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||||
# them as ctest would make every CI run slow and the numbers would
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# get drowned in pass/fail noise. See the header of each .c for what
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# they measure.
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add_executable(bench_flush_frame tests/bench_flush_frame.c)
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target_link_libraries(bench_flush_frame PRIVATE daedalus_decoder)
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target_compile_options(bench_flush_frame PRIVATE -O2)
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# ---- Tools (not gated by ctest; opt-in via DAEDALUS_BUILD_TOOLS) ----
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#
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# daedalus_decode_h264 — option A standalone test harness that
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# wraps libavcodec + daedalus-decoder and bit-exact-compares their
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# outputs on real H.264 streams. Identity-passthrough mode in this
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# first iteration (predicted = AVFrame pixels, coeffs = 0, no
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# deblock edges); follow-up PRs use the per-MB inspection callback
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||||
# (marfrit-packages patch 0016) to feed REAL per-MB state.
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#
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# Requires libavcodec + libavformat headers + libs. Off by default
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# so the standard ctest build doesn't pull in FFmpeg as a hard dep.
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option(DAEDALUS_BUILD_TOOLS "Build daedalus-decoder CLI tools (requires libavcodec)" OFF)
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if(DAEDALUS_BUILD_TOOLS)
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# Optional path to a private FFmpeg install carrying the per-MB
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||||
# inspection callback (marfrit-packages patch 0016). When set,
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||||
# the CLI links against it instead of the system FFmpeg and the
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||||
# inspection-callback code path is compiled in.
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||||
set(DAEDALUS_FFMPEG_PREFIX "" CACHE PATH
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||||
"Path to a patched FFmpeg install (with 0016 mb-inspect-callback) for daedalus_decode_h264. Empty = use system pkg-config FFmpeg.")
|
||||
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||||
if(DAEDALUS_FFMPEG_PREFIX)
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||||
message(STATUS "daedalus_decode_h264: patched FFmpeg at ${DAEDALUS_FFMPEG_PREFIX}")
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set(FFMPEG_INCLUDE_DIRS ${DAEDALUS_FFMPEG_PREFIX}/include)
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||||
set(FFMPEG_LIBRARY_DIRS ${DAEDALUS_FFMPEG_PREFIX}/lib)
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||||
# Patched libavcodec is built static (no shared libs in the private prefix).
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||||
# System pull-ins are still needed for libav* dependencies.
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||||
set(FFMPEG_LIBRARIES
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||||
${DAEDALUS_FFMPEG_PREFIX}/lib/libavformat.a
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||||
${DAEDALUS_FFMPEG_PREFIX}/lib/libavcodec.a
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||||
${DAEDALUS_FFMPEG_PREFIX}/lib/libavutil.a
|
||||
${DAEDALUS_FFMPEG_PREFIX}/lib/libswresample.a
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||||
m z pthread)
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||||
set(FFMPEG_CFLAGS_OTHER "-DDAEDALUS_HAVE_H264_MB_INSPECT_CB=1")
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||||
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||||
# PR-A3+ optional: also point at the patched FFmpeg SOURCE TREE
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||||
# so the CLI can include libavcodec/h264dec.h directly and
|
||||
# dereference H264Context fields (the side-buffer mb_inspect_coeffs
|
||||
# added in marfrit-packages patch 0017, the cur_pic.f for
|
||||
# pre-deblock pixel access, etc.). When set, the internal-header
|
||||
# include codepath is compiled in.
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||||
set(DAEDALUS_FFMPEG_SRC "" CACHE PATH
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||||
"Path to patched FFmpeg source tree (= path to FFmpeg/ checkout where build was run; contains config.h + libavcodec/h264dec.h). Empty = h264dec.h includes are disabled.")
|
||||
if(DAEDALUS_FFMPEG_SRC)
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||||
message(STATUS "daedalus_decode_h264: FFmpeg source at ${DAEDALUS_FFMPEG_SRC}")
|
||||
# IMPORTANT: source tree FIRST in -I order — its
|
||||
# libavutil/common.h does #include "intmath.h" with HAVE_AV_CONFIG_H,
|
||||
# which resolves to libavutil/intmath.h (in the source tree
|
||||
# only — that header isn't installed since it's arch-dispatched).
|
||||
# The installed-prefix include path's libavutil/common.h is the
|
||||
# same file textually but resolves "intmath.h" against the
|
||||
# install dir where it doesn't exist.
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||||
set(FFMPEG_INCLUDE_DIRS ${DAEDALUS_FFMPEG_SRC})
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||||
set(FFMPEG_CFLAGS_OTHER
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||||
"${FFMPEG_CFLAGS_OTHER} -DDAEDALUS_HAVE_H264_MB_INSPECT_COEFFS=1 -DHAVE_AV_CONFIG_H")
|
||||
# Convert space-separated string to list (CMake idiom for compile flags).
|
||||
separate_arguments(FFMPEG_CFLAGS_OTHER UNIX_COMMAND "${FFMPEG_CFLAGS_OTHER}")
|
||||
endif()
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||||
else()
|
||||
pkg_check_modules(FFMPEG REQUIRED libavcodec libavformat libavutil)
|
||||
message(STATUS "daedalus_decode_h264: system FFmpeg (no inspection callback)")
|
||||
endif()
|
||||
|
||||
add_executable(daedalus_decode_h264 tools/daedalus_decode_h264.c)
|
||||
target_link_libraries(daedalus_decode_h264
|
||||
PRIVATE daedalus_decoder ${FFMPEG_LIBRARIES})
|
||||
target_include_directories(daedalus_decode_h264
|
||||
PRIVATE ${FFMPEG_INCLUDE_DIRS})
|
||||
target_link_directories(daedalus_decode_h264
|
||||
PRIVATE ${FFMPEG_LIBRARY_DIRS})
|
||||
target_compile_options(daedalus_decode_h264
|
||||
PRIVATE -O2 ${FFMPEG_CFLAGS_OTHER})
|
||||
endif()
|
||||
|
||||
# ---- Install ------------------------------------------------------
|
||||
#
|
||||
# Library + public header. Stage 2/3 will add a pkg-config file and
|
||||
# CMake config exports once the API stabilises; pre-0.1 the scaffold
|
||||
# install just gives the static archive a home.
|
||||
|
||||
include(GNUInstallDirs)
|
||||
install(TARGETS daedalus_decoder
|
||||
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
|
||||
install(FILES include/daedalus_decoder.h
|
||||
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
|
||||
@@ -261,31 +261,25 @@ That's a substantial shader inventory. Each requires bit-exact M1 gate against
|
||||
|
||||
**Phase 4 — Production-ready deblock + perf optimization + libva integration** (+4 weeks). Real-world stream conformance. Plug into daedalus-v4l2 daemon as the actual decode backend.
|
||||
|
||||
**Total H.264 budget:** 4-6 months.
|
||||
|
||||
**Phase 5+ (future codec scope, not committed):** VP9 and AV1 reuse the same frame-level dispatch architecture, daedalus-fourier kernel pack, and DPB plumbing. Per §9.7, they are deferred but *not firmly out-of-scope*. HEVC stays firmly out (Pi 5 has `rpi-hevc-dec` for that).
|
||||
**Total budget:** 4-6 months.
|
||||
|
||||
---
|
||||
|
||||
## 9. Phase 1 decisions
|
||||
## 9. Open questions
|
||||
|
||||
User-confirmed 2026-05-24. All seven questions from the initial
|
||||
draft are now decided; this section preserves the original wording
|
||||
of each item for traceability.
|
||||
1. **Intra prediction strategy:** GPU wavefront (~187 dispatches, more complex) vs CPU speculative (simpler, slower). Plan: wavefront in Phase 1; revisit if it's the perf bottleneck. [x]
|
||||
|
||||
1. **Intra prediction strategy:** GPU wavefront (~187 dispatches, more complex) vs CPU speculative (simpler, slower). **Decision: wavefront in Phase 1; revisit if it's the perf bottleneck.**
|
||||
2. **libavcodec intercept granularity:** macroblock-level (substitution-arc evolution) vs slice-level (cleaner rewrite). Plan: macroblock-level for Phase 1; consider slice-level later if buffer accumulation overhead is non-trivial. [x]
|
||||
|
||||
2. **libavcodec intercept granularity:** macroblock-level (substitution-arc evolution) vs slice-level (cleaner rewrite). **Decision: macroblock-level for Phase 1; consider slice-level later if buffer accumulation overhead is non-trivial.**
|
||||
3. **Shader parameterization:** 16 qpel variants as 16 shaders, or one parameterized shader with switch on mc_position? V3D's compiler might inline-optimize either; needs measurement. [x] Measurement it is.
|
||||
|
||||
3. **Shader parameterization:** 16 qpel variants as 16 shaders, or one parameterized shader with switch on mc_position? **Decision: measure both during Phase 2 (the MC phase) and pick the winner. No commit ahead of measurement.**
|
||||
4. **DPB allocation:** Vulkan-native VkImage with dmabuf export, vs CPU-allocated dma_buf imported into Vulkan. Affects V4L2 integration story. Plan: Vulkan-native with `VK_KHR_external_memory_dma_buf` export; daedalus-v4l2 daemon imports. [x]
|
||||
|
||||
4. **DPB allocation:** Vulkan-native VkImage with dmabuf export, vs CPU-allocated dma_buf imported into Vulkan. **Decision: Vulkan-native with `VK_KHR_external_memory_dma_buf` export; daedalus-v4l2 daemon imports.**
|
||||
5. **Daemon integration shape:** does daedalus-decoder ship as a static library the daemon links, or as a separate process the daemon talks to? Library, almost certainly — process boundary would multiply IPC cost. [x] library.
|
||||
|
||||
5. **Daemon integration shape:** static library the daemon links, or separate process. **Decision: library link.**
|
||||
6. **Build dependency on daedalus-fourier:** as a CMake `find_package`, or vendored? `find_package`, pinned to a tagged release. daedalus-fourier becomes the "kernel pack" upstream library. [x] Yes.
|
||||
|
||||
6. **Build dependency on daedalus-fourier:** CMake `find_package`, or vendored? **Decision: `find_package`, pinned to a tagged release. daedalus-fourier becomes the "kernel pack" upstream library.**
|
||||
|
||||
7. **Codec scope.** **Decision: firmly out-of-scope for daedalus-decoder are HEVC (Pi 5 has `rpi-hevc-dec` for that), 10-bit, interlaced, and FMO/ASO.** VP9 and AV1 are *not* firmly out — they're future codec scope for the same framework after H.264 lands. This is a scope expansion from the initial draft, which had grouped them with HEVC under "firmly out".
|
||||
7. **Out-of-scope for daedalus-decoder (firmly):** HEVC (Pi 5 has rpi-hevc-dec for that), 10-bit, interlaced, FMO/ASO.
|
||||
|
||||
---
|
||||
|
||||
|
||||
@@ -1,24 +0,0 @@
|
||||
BSD 2-Clause License
|
||||
|
||||
Copyright (c) 2026, Markus Fritsche
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
|
||||
2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
@@ -1,300 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/*
|
||||
* daedalus-decoder — public C API.
|
||||
*
|
||||
* Frame-level GPU H.264 decoder targeting V3D7 (Raspberry Pi 5). Built
|
||||
* on daedalus-fourier's V3D compute primitives at frame granularity —
|
||||
* one Vulkan submit per frame, one fence wait per frame, encoded
|
||||
* bitstream in (via libavcodec's per-MB intercept), NV12 frame out.
|
||||
*
|
||||
* Per the 2026-05-24 Phase 1 design decisions:
|
||||
* - libavcodec intercept is at macroblock-level (substitution-arc
|
||||
* evolution): the caller is expected to drive the per-MB CABAC /
|
||||
* CAVLC entropy decode and feed each macroblock's descriptor +
|
||||
* coefficients via daedalus_decoder_append_mb(). flush_frame()
|
||||
* builds the per-frame VkCommandBuffer and submits.
|
||||
* - DPB is Vulkan-native VkImage with VK_KHR_external_memory_dma_buf
|
||||
* export. The caller can obtain the output frame's dmabuf fd
|
||||
* via daedalus_decoder_export_dmabuf().
|
||||
* - Daemon integration shape: this library is statically linked into
|
||||
* daedalus_v4l2_daemon. No IPC.
|
||||
*
|
||||
* STATUS: scaffold. No GPU pipeline implemented yet; all functions
|
||||
* are stubs that compile but do not decode anything. See DESIGN.md
|
||||
* for the architecture.
|
||||
*
|
||||
* ABI: pre-0.1 — every signature here may change. Don't rely on
|
||||
* stability yet.
|
||||
*/
|
||||
#ifndef DAEDALUS_DECODER_H
|
||||
#define DAEDALUS_DECODER_H
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Opaque decoder context. One per concurrent stream.
|
||||
* ----------------------------------------------------------------- */
|
||||
typedef struct daedalus_decoder daedalus_decoder;
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Per-edge deblock metadata. One entry per filter-edge; the caller
|
||||
* derives these from H.264 §8.7.2.1 boundary-strength rules.
|
||||
*
|
||||
* Coordinate convention:
|
||||
* mb_x / mb_y — the MB whose top-left this edge sits on (the "right"
|
||||
* side for vertical edges, "bottom" side for horizontal
|
||||
* edges, in H.264 spec's q-side convention).
|
||||
* edge_idx — 0..3 within the MB:
|
||||
* luma: edge 0 = MB boundary, edges 1..3 = internal
|
||||
* at cols/rows 4, 8, 12.
|
||||
* chroma: edge 0 = MB boundary, edge 1 = internal at
|
||||
* col/row 4. edge_idx > 1 invalid for chroma.
|
||||
* Edges at frame boundaries (top row of MBs for H edges;
|
||||
* left column for V edges) MUST be bS=0 — the kernel
|
||||
* reads p3 at four samples beyond the edge.
|
||||
* orient — 0 = vertical edge (filtered horizontally across), 1 = horizontal.
|
||||
* plane — 0 = luma, 1 = chroma Cb, 2 = chroma Cr. Cb and Cr
|
||||
* always share the same filter parameters per H.264
|
||||
* spec, but are listed separately so the caller can
|
||||
* omit one or the other if needed.
|
||||
* bS — 0 = skip this edge (no GPU work), 1..3 = bS<4 path
|
||||
* (uses tc0), 4 = bS=4 "intra" path (ignores tc0).
|
||||
* alpha, beta — H.264 §8.7.2.2 table 8-16/8-17 values, both 0..255.
|
||||
* tc0[4] — per-4-cell segment strength along the edge (luma has
|
||||
* 4 segments; chroma has 4 also, with 2 cells each).
|
||||
* IGNORED when bS == 4.
|
||||
* ----------------------------------------------------------------- */
|
||||
struct daedalus_decoder_edge {
|
||||
uint16_t mb_x;
|
||||
uint16_t mb_y;
|
||||
uint8_t edge_idx;
|
||||
uint8_t orient;
|
||||
uint8_t plane;
|
||||
uint8_t bS;
|
||||
uint8_t alpha;
|
||||
uint8_t beta;
|
||||
int8_t tc0[4];
|
||||
};
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Per-macroblock input. Mirrors §3 of DESIGN.md. The caller's
|
||||
* libavcodec intercept populates this from the H264SliceContext
|
||||
* fields after ff_h264_decode_mb_cabac/cavlc returns and before
|
||||
* ff_h264_hl_decode_mb is supposed to run (we replace the latter).
|
||||
* ----------------------------------------------------------------- */
|
||||
struct daedalus_decoder_mb_input {
|
||||
/* Frame coordinates (macroblock units). */
|
||||
uint16_t mb_x;
|
||||
uint16_t mb_y;
|
||||
|
||||
/* Type + quantisation. */
|
||||
uint8_t mb_type; /* H.264 spec table 7-13/7-14/7-17/7-18 enum */
|
||||
uint8_t mb_qp_y;
|
||||
uint8_t mb_qp_uv;
|
||||
uint8_t cbp; /* coded block pattern, 0..47 */
|
||||
|
||||
/* Intra prediction (used iff mb_type == I_NxN or I_16x16). */
|
||||
uint8_t intra_4x4_modes[16];
|
||||
uint8_t intra_16x16_mode;
|
||||
uint8_t intra_chroma_mode;
|
||||
|
||||
/* Inter motion / partitions (used iff P_* or B_*). */
|
||||
uint8_t partition_mode; /* P_16x16 / P_16x8 / P_8x16 / P_8x8 / etc. */
|
||||
int8_t ref_idx_l0[4]; /* per partition; -1 = not used */
|
||||
int8_t ref_idx_l1[4]; /* B only */
|
||||
int16_t mv_l0[4][2]; /* qpel precision (1/4 sample); (x, y) */
|
||||
int16_t mv_l1[4][2];
|
||||
|
||||
/* Deblocking filter parameters. */
|
||||
uint8_t deblock_disable; /* 0 = enabled */
|
||||
int8_t deblock_alpha_c0;
|
||||
int8_t deblock_beta;
|
||||
|
||||
/* High-profile 8x8 transform selector.
|
||||
* 0 = the 256-int16 luma section of coeffs[] holds 16 4x4 blocks
|
||||
* (16 coeffs each, raster sb_y*4+sb_x); the chroma section is
|
||||
* always 4x4.
|
||||
* 1 = the 256-int16 luma section holds 4 8x8 blocks (64 coeffs
|
||||
* each, raster sb_y*2+sb_x). Set per H.264's
|
||||
* transform_8x8_size_flag. Chroma remains 4x4 (4:2:0).
|
||||
*/
|
||||
uint8_t transform_8x8;
|
||||
|
||||
/* Transform coefficients — 256 luma + 64 cb + 64 cr int16, all
|
||||
* column-major within each 4x4 or 8x8 block (matches FFmpeg
|
||||
* convention). Caller-owned; copied during append. */
|
||||
const int16_t *coeffs; /* points at exactly 384 int16_t */
|
||||
|
||||
/* Reconstructed predicted samples for this MB, planar order:
|
||||
* [ 0 .. 256) — 16×16 luma, ROW-MAJOR raster (row 0 cols 0..15,
|
||||
* row 1 cols 0..15, ..., row 15 cols 0..15)
|
||||
* [256 .. 320) — 8×8 Cb, ROW-MAJOR raster
|
||||
* [320 .. 384) — 8×8 Cr, ROW-MAJOR raster
|
||||
*
|
||||
* The caller (libavcodec's CPU intra-prediction kernels for Phase 1
|
||||
* I-frames; MC fallback for Phase 2 P-frames before GPU MC lands)
|
||||
* populates this from neighbour samples per H.264 §8.3 / §8.4.
|
||||
* `flush_frame()`'s reconstruction step is `clip255(predicted +
|
||||
* idct(coeffs))` — the IDCT shader reads dst, adds the inverse
|
||||
* transform, writes clipped — so a non-zero `predicted` here makes
|
||||
* the output pixel a valid H.264 reconstruction; zero means
|
||||
* residual-only (used by IDCT-isolation tests).
|
||||
*
|
||||
* NULL is legal and means "all-zero predicted samples" for this MB
|
||||
* (the per-frame predicted buffer is zeroed at flush time so a NULL
|
||||
* is indistinguishable from explicit zeros). */
|
||||
const uint8_t *predicted; /* NULL or exactly 384 uint8_t */
|
||||
|
||||
/* Per-MB deblock edges — caller-derived per H.264 §8.7.2. Typical
|
||||
* count: 4 V-luma + 4 H-luma + 2 V-Cb + 2 H-Cb + 2 V-Cr + 2 H-Cr
|
||||
* = 16 edges per MB (omit zero-bS edges if preferred — frame
|
||||
* boundaries MUST be bS=0 since the kernels read p3 at four
|
||||
* samples beyond the edge). daedalus_decoder routes each entry
|
||||
* to the appropriate luma/chroma × V/H × bS=4/<4 dispatch in
|
||||
* flush_frame and pays a single Vulkan submit per non-empty
|
||||
* (direction × bS-band) partition (≤8 deblock submits / frame
|
||||
* total) per the Q1 architecture decision (one-submit-per-kernel
|
||||
* for now; cmdbuf-builder deferred to Stage 4).
|
||||
*
|
||||
* NULL or n_edges == 0 → no deblock on this MB. */
|
||||
const struct daedalus_decoder_edge *edges;
|
||||
uint8_t n_edges;
|
||||
};
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Output frame format selector.
|
||||
* ----------------------------------------------------------------- */
|
||||
typedef enum {
|
||||
DAEDALUS_DECODER_OUTPUT_NV12 = 0, /* default; Stage 4 final */
|
||||
DAEDALUS_DECODER_OUTPUT_RGBA = 1, /* Stage 5 opt-in */
|
||||
} daedalus_decoder_output_format;
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Substrate selector. Determines which backend daedalus-fourier
|
||||
* dispatches the per-frame compute through.
|
||||
*
|
||||
* AUTO is the only sensible choice for production — it picks per the
|
||||
* recipe table baked into daedalus-fourier (post 2026-05-23 decree:
|
||||
* QPU when a V3D shader exists, CPU NEON otherwise). The explicit
|
||||
* options exist for testing:
|
||||
*
|
||||
* - CPU forces the dispatch onto the NEON path even when V3D7 is
|
||||
* available. Lets the bit-exact ctests run on hosts without a
|
||||
* working Vulkan/V3D stack (CI runners, dev x86 boxes via
|
||||
* cross-build), and lets us cross-check the V3D shader output
|
||||
* against the NEON reference path on hosts that DO have V3D.
|
||||
* - QPU is the dual — force QPU even on a CPU-preferred kernel.
|
||||
* Useful for benchmarking specific QPU paths in isolation.
|
||||
*
|
||||
* A non-AUTO selection on a host that can't satisfy it
|
||||
* (DAEDALUS_DECODER_SUBSTRATE_QPU on an x86 dev box) propagates a
|
||||
* dispatch failure back through flush_frame as -3.
|
||||
* ----------------------------------------------------------------- */
|
||||
typedef enum {
|
||||
DAEDALUS_DECODER_SUBSTRATE_AUTO = 0,
|
||||
DAEDALUS_DECODER_SUBSTRATE_CPU = 1,
|
||||
DAEDALUS_DECODER_SUBSTRATE_QPU = 2,
|
||||
} daedalus_decoder_substrate;
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Lifecycle
|
||||
* ----------------------------------------------------------------- */
|
||||
|
||||
/* Create a decoder context for the given **coded** frame dimensions.
|
||||
*
|
||||
* width, height: pixels of the H.264 coded picture, NOT the displayed
|
||||
* picture. Both must be multiples of 16 (macroblock granularity).
|
||||
* For displayed 1080p (1920×1080), the coded frame is 1920×1088 with
|
||||
* the SPS's `frame_cropping_*` offsets cropping the bottom 8 rows.
|
||||
* The caller is responsible for translating from SPS dims + crop
|
||||
* rectangle to the values passed here; we decode the coded frame.
|
||||
*
|
||||
* Returns NULL on bad dimensions or allocation failure. Returns a
|
||||
* usable context with daedalus_decoder_has_qpu() == 0 when Vulkan
|
||||
* init fails — callers that need GPU work should check has_qpu
|
||||
* before relying on it.
|
||||
*/
|
||||
daedalus_decoder *daedalus_decoder_create(int width, int height);
|
||||
|
||||
/* Free all resources. Safe with NULL. */
|
||||
void daedalus_decoder_destroy(daedalus_decoder *dec);
|
||||
|
||||
/* Switch output format BEFORE the first append_mb call of a frame.
|
||||
* Default is NV12. Returns 0 on success, -1 if called mid-frame
|
||||
* (caller must flush first). */
|
||||
int daedalus_decoder_set_output_format(daedalus_decoder *dec,
|
||||
daedalus_decoder_output_format fmt);
|
||||
|
||||
/* Override the dispatch substrate for subsequent flush_frame calls.
|
||||
* Default is AUTO. Same mid-frame-change restriction as
|
||||
* set_output_format. */
|
||||
int daedalus_decoder_set_substrate(daedalus_decoder *dec,
|
||||
daedalus_decoder_substrate sub);
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Per-frame submission
|
||||
* ----------------------------------------------------------------- */
|
||||
|
||||
/* Append one macroblock's data to the current frame's descriptor SSBO
|
||||
* + coefficient SSBO. No GPU dispatch yet — just CPU-side writes.
|
||||
*
|
||||
* Must be called in raster order (mb_y * mb_width + mb_x) for the
|
||||
* intra-prediction wavefront to work correctly in Phase 1.
|
||||
*
|
||||
* Returns 0 on success, negative on bounds violation or OOM.
|
||||
*/
|
||||
int daedalus_decoder_append_mb(daedalus_decoder *dec,
|
||||
const struct daedalus_decoder_mb_input *mb);
|
||||
|
||||
/* End-of-frame flush: builds the per-frame VkCommandBuffer with all
|
||||
* pipeline stages, submits once, waits on a single fence, copies the
|
||||
* NV12 (or RGBA when opted in) output into the caller-provided
|
||||
* planes.
|
||||
*
|
||||
* For NV12:
|
||||
* out_y / y_stride: Y plane (W*H bytes minimum, at the given stride)
|
||||
* out_uv / uv_stride: interleaved UV plane (W*(H/2) bytes minimum)
|
||||
*
|
||||
* For RGBA: out_y receives 4*W*H bytes at y_stride; out_uv ignored.
|
||||
*
|
||||
* Returns 0 on success, negative on Vulkan failure or undecodable
|
||||
* frame. After return, the decoder is ready for the next frame's
|
||||
* append calls.
|
||||
*/
|
||||
int daedalus_decoder_flush_frame(daedalus_decoder *dec,
|
||||
uint8_t *out_y, size_t y_stride,
|
||||
uint8_t *out_uv, size_t uv_stride);
|
||||
|
||||
/* Export the most-recently-decoded frame as a dma_buf fd. The fd is
|
||||
* owned by the caller and must be closed when done. Lets V4L2
|
||||
* consumers (daedalus_v4l2_daemon, libva-v4l2-request-fourier) attach
|
||||
* the GPU-decoded surface directly to a CAPTURE plane without a CPU
|
||||
* round-trip.
|
||||
*
|
||||
* Returns the dmabuf fd on success, -1 on failure. Must be called
|
||||
* AFTER flush_frame returns for the relevant frame.
|
||||
*/
|
||||
int daedalus_decoder_export_dmabuf(daedalus_decoder *dec, int plane);
|
||||
|
||||
/* -------------------------------------------------------------------
|
||||
* Diagnostics
|
||||
* ----------------------------------------------------------------- */
|
||||
|
||||
/* daedalus-decoder build version (semver string, e.g. "0.0.1+g0a1b2c3"). */
|
||||
const char *daedalus_decoder_version(void);
|
||||
|
||||
/* Whether the underlying daedalus-fourier context picked up a working
|
||||
* V3D7 Vulkan instance. Returns 0 if Vulkan init failed and the
|
||||
* decoder is operating in stub / failure mode. */
|
||||
int daedalus_decoder_has_qpu(const daedalus_decoder *dec);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* DAEDALUS_DECODER_H */
|
||||
@@ -1,691 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/*
|
||||
* daedalus-decoder — public C API implementation.
|
||||
*
|
||||
* Scaffold only. Most functions return success with no GPU work
|
||||
* performed; the bodies will fill in across Phases 1-4 per DESIGN.md
|
||||
* §8. This file exists so the API surface compiles, links, and can
|
||||
* be smoke-tested end-to-end (ctx create / append / flush / destroy)
|
||||
* before any shader work begins.
|
||||
*/
|
||||
|
||||
#include "internal.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* Built via -D from CMakeLists. */
|
||||
#ifndef DAEDALUS_DECODER_VERSION
|
||||
#define DAEDALUS_DECODER_VERSION "0.0.1+scaffold"
|
||||
#endif
|
||||
|
||||
const char *daedalus_decoder_version(void)
|
||||
{
|
||||
return DAEDALUS_DECODER_VERSION;
|
||||
}
|
||||
|
||||
daedalus_decoder *daedalus_decoder_create(int width, int height)
|
||||
{
|
||||
if (width <= 0 || height <= 0)
|
||||
return NULL;
|
||||
if ((width & 15) || (height & 15))
|
||||
return NULL; /* must be multiple of 16 */
|
||||
|
||||
daedalus_decoder *dec = calloc(1, sizeof(*dec));
|
||||
if (!dec)
|
||||
return NULL;
|
||||
|
||||
dec->width = width;
|
||||
dec->height = height;
|
||||
dec->mb_width = width >> 4;
|
||||
dec->mb_height = height >> 4;
|
||||
dec->n_mbs = dec->mb_width * dec->mb_height;
|
||||
dec->output_fmt = DAEDALUS_DECODER_OUTPUT_NV12;
|
||||
dec->substrate = DAEDALUS_DECODER_SUBSTRATE_AUTO;
|
||||
|
||||
/* daedalus-fourier ctx — required. Phase 1 needs the QPU; if
|
||||
* Vulkan init fails the decoder is unusable. Caller can check
|
||||
* via daedalus_decoder_has_qpu(). */
|
||||
dec->dctx = daedalus_ctx_create();
|
||||
if (!dec->dctx) {
|
||||
free(dec);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
dec->mb_descs = calloc((size_t) dec->n_mbs, sizeof(*dec->mb_descs));
|
||||
dec->coeffs = calloc((size_t) dec->n_mbs * 384, sizeof(int16_t));
|
||||
|
||||
/* Predicted-samples buffers — zero-initialised so a frame where
|
||||
* every append_mb gets NULL `predicted` decodes residual-only
|
||||
* (the Stage 1 scaffold contract). flush_frame zeroes these at
|
||||
* end-of-frame to maintain that invariant for the next frame. */
|
||||
const size_t pred_y_size = (size_t) width * (size_t) height;
|
||||
const size_t pred_uv_size = pred_y_size / 2;
|
||||
dec->predicted_y = calloc(1, pred_y_size);
|
||||
dec->predicted_uv = calloc(1, pred_uv_size);
|
||||
|
||||
/* Edge buffer sized for the typical worst case (see daedalus_decoder.h).
|
||||
* 16 edges/MB × n_mbs. ~130k entries for 1080p; ~2 MB at sizeof(edge). */
|
||||
dec->edges_capacity = (size_t) dec->n_mbs * 16;
|
||||
dec->edges_count = 0;
|
||||
dec->edges = malloc(dec->edges_capacity * sizeof(*dec->edges));
|
||||
|
||||
if (!dec->mb_descs || !dec->coeffs ||
|
||||
!dec->predicted_y || !dec->predicted_uv || !dec->edges) {
|
||||
daedalus_decoder_destroy(dec);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
return dec;
|
||||
}
|
||||
|
||||
void daedalus_decoder_destroy(daedalus_decoder *dec)
|
||||
{
|
||||
if (!dec)
|
||||
return;
|
||||
free(dec->edges);
|
||||
free(dec->predicted_uv);
|
||||
free(dec->predicted_y);
|
||||
free(dec->coeffs);
|
||||
free(dec->mb_descs);
|
||||
if (dec->dctx)
|
||||
daedalus_ctx_destroy(dec->dctx);
|
||||
free(dec);
|
||||
}
|
||||
|
||||
int daedalus_decoder_set_output_format(daedalus_decoder *dec,
|
||||
daedalus_decoder_output_format fmt)
|
||||
{
|
||||
if (!dec)
|
||||
return -1;
|
||||
if (dec->mbs_appended != 0)
|
||||
return -1; /* mid-frame change forbidden */
|
||||
if (fmt != DAEDALUS_DECODER_OUTPUT_NV12 &&
|
||||
fmt != DAEDALUS_DECODER_OUTPUT_RGBA)
|
||||
return -1;
|
||||
dec->output_fmt = fmt;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int daedalus_decoder_set_substrate(daedalus_decoder *dec,
|
||||
daedalus_decoder_substrate sub)
|
||||
{
|
||||
if (!dec)
|
||||
return -1;
|
||||
if (dec->mbs_appended != 0)
|
||||
return -1;
|
||||
if (sub != DAEDALUS_DECODER_SUBSTRATE_AUTO &&
|
||||
sub != DAEDALUS_DECODER_SUBSTRATE_CPU &&
|
||||
sub != DAEDALUS_DECODER_SUBSTRATE_QPU)
|
||||
return -1;
|
||||
dec->substrate = sub;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Map our public substrate enum onto daedalus-fourier's. Same
|
||||
* ordering by intent — we duplicate the enum for ABI isolation. */
|
||||
static daedalus_substrate map_substrate(daedalus_decoder_substrate s)
|
||||
{
|
||||
switch (s) {
|
||||
case DAEDALUS_DECODER_SUBSTRATE_CPU: return DAEDALUS_SUBSTRATE_CPU;
|
||||
case DAEDALUS_DECODER_SUBSTRATE_QPU: return DAEDALUS_SUBSTRATE_QPU;
|
||||
case DAEDALUS_DECODER_SUBSTRATE_AUTO:
|
||||
default: return DAEDALUS_SUBSTRATE_AUTO;
|
||||
}
|
||||
}
|
||||
|
||||
int daedalus_decoder_append_mb(daedalus_decoder *dec,
|
||||
const struct daedalus_decoder_mb_input *mb)
|
||||
{
|
||||
if (!dec || !mb || !mb->coeffs)
|
||||
return -1;
|
||||
if (mb->mb_x >= dec->mb_width || mb->mb_y >= dec->mb_height)
|
||||
return -1;
|
||||
|
||||
/* Raster-order check — Phase 1's intra wavefront requires it.
|
||||
* Caller is libavcodec's slice loop which produces raster order
|
||||
* naturally, so this should never fire in practice. */
|
||||
int expected = mb->mb_y * dec->mb_width + mb->mb_x;
|
||||
if (expected != dec->mbs_appended)
|
||||
return -1;
|
||||
|
||||
struct daedalus_decoder_mb_desc *d = &dec->mb_descs[expected];
|
||||
d->mb_x = mb->mb_x;
|
||||
d->mb_y = mb->mb_y;
|
||||
d->mb_type = mb->mb_type;
|
||||
d->mb_qp_y = mb->mb_qp_y;
|
||||
d->mb_qp_uv = mb->mb_qp_uv;
|
||||
d->cbp = mb->cbp;
|
||||
memcpy(d->intra_4x4_modes, mb->intra_4x4_modes, 16);
|
||||
d->intra_16x16_mode = mb->intra_16x16_mode;
|
||||
d->intra_chroma_mode = mb->intra_chroma_mode;
|
||||
d->partition_mode = mb->partition_mode;
|
||||
memcpy(d->ref_idx_l0, mb->ref_idx_l0, 4);
|
||||
memcpy(d->ref_idx_l1, mb->ref_idx_l1, 4);
|
||||
memcpy(d->mv_l0, mb->mv_l0, sizeof(d->mv_l0));
|
||||
memcpy(d->mv_l1, mb->mv_l1, sizeof(d->mv_l1));
|
||||
d->deblock_disable = mb->deblock_disable;
|
||||
d->deblock_alpha_c0 = mb->deblock_alpha_c0;
|
||||
d->deblock_beta = mb->deblock_beta;
|
||||
d->transform_8x8 = mb->transform_8x8;
|
||||
|
||||
memcpy(&dec->coeffs[(size_t) expected * 384],
|
||||
mb->coeffs,
|
||||
384 * sizeof(int16_t));
|
||||
|
||||
/* Splat predicted samples into frame-scoped planes at raster
|
||||
* (mb_y*16, mb_x*16) for luma, (mb_y*8, mb_x*8) for each chroma
|
||||
* component. NULL → leave buffers as-is (zeroed at create + at
|
||||
* end of each flush_frame); that's the zero-predictor contract. */
|
||||
if (mb->predicted) {
|
||||
const size_t y_stride = (size_t) dec->width;
|
||||
const size_t uv_stride = (size_t) dec->width / 2;
|
||||
const size_t uv_plane = uv_stride * ((size_t) dec->height / 2);
|
||||
|
||||
const uint8_t *p_y = mb->predicted;
|
||||
const uint8_t *p_cb = mb->predicted + 256;
|
||||
const uint8_t *p_cr = mb->predicted + 256 + 64;
|
||||
|
||||
uint8_t *dst_y = &dec->predicted_y[
|
||||
(size_t) mb->mb_y * 16 * y_stride + (size_t) mb->mb_x * 16];
|
||||
uint8_t *dst_cb = &dec->predicted_uv[
|
||||
(size_t) mb->mb_y * 8 * uv_stride + (size_t) mb->mb_x * 8];
|
||||
uint8_t *dst_cr = &dec->predicted_uv[uv_plane +
|
||||
(size_t) mb->mb_y * 8 * uv_stride + (size_t) mb->mb_x * 8];
|
||||
|
||||
for (int r = 0; r < 16; r++)
|
||||
memcpy(&dst_y[(size_t) r * y_stride], &p_y[r * 16], 16);
|
||||
for (int r = 0; r < 8; r++) {
|
||||
memcpy(&dst_cb[(size_t) r * uv_stride], &p_cb[r * 8], 8);
|
||||
memcpy(&dst_cr[(size_t) r * uv_stride], &p_cr[r * 8], 8);
|
||||
}
|
||||
}
|
||||
|
||||
/* Append per-MB deblock edges into the frame-scoped flat buffer.
|
||||
* Frame-boundary edges (mx=0 V or my=0 H) MUST have bS=0 per the
|
||||
* kernel's p3-at-±4 contract; we don't validate here (caller is
|
||||
* derived from H.264 spec which already enforces this). */
|
||||
if (mb->edges && mb->n_edges > 0) {
|
||||
if (dec->edges_count + mb->n_edges > dec->edges_capacity)
|
||||
return -1;
|
||||
memcpy(&dec->edges[dec->edges_count],
|
||||
mb->edges,
|
||||
mb->n_edges * sizeof(*dec->edges));
|
||||
dec->edges_count += mb->n_edges;
|
||||
}
|
||||
|
||||
dec->mbs_appended++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* --------------------------------------------------------------------
|
||||
* Deblock helper — walks dec->edges once for a given (plane, orient,
|
||||
* bS_band) selector, builds the corresponding daedalus-fourier
|
||||
* deblock-meta array, and dispatches it through the matching kernel.
|
||||
*
|
||||
* One call → one Vulkan submit, OR zero submits when the selector
|
||||
* matches no edges (a common case for B/P frames with most edges in
|
||||
* bS<4 and only MB-boundary edges in bS=4, or vice versa).
|
||||
*
|
||||
* Edge → dst_off math:
|
||||
* luma: px_x = mb_x*16, px_y = mb_y*16, edge step = 4 cells
|
||||
* chroma: px_x = mb_x*8, px_y = mb_y*8, edge step = 4 cells
|
||||
* Cb edges land at offset 0..cb_plane in scratch_uv;
|
||||
* Cr edges land at offset cb_plane..2*cb_plane (planar
|
||||
* layout matching the chroma IDCT scratch).
|
||||
*
|
||||
* orient == 0 (vertical edge filtered horizontally across):
|
||||
* dst_off = px_y * stride + px_x + edge_idx * 4
|
||||
*
|
||||
* orient == 1 (horizontal edge filtered vertically across):
|
||||
* dst_off = (px_y + edge_idx * 4) * stride + px_x
|
||||
*
|
||||
* Edges at frame boundaries (mb_x=0 V, mb_y=0 H with edge_idx=0) MUST
|
||||
* have bS=0 (the kernel reads p3 at four samples beyond the edge);
|
||||
* caller-side spec compliance is assumed, no validation here.
|
||||
*
|
||||
* Returns the dispatch's rc (0 = success; <0 = failure). No-op when
|
||||
* the selector matches no edges, returning 0.
|
||||
*/
|
||||
static int dispatch_deblock_pass(
|
||||
daedalus_decoder *dec, daedalus_substrate sub,
|
||||
int target_plane, /* 0 = luma, 1 = chroma (Cb|Cr by plane field) */
|
||||
int target_orient, /* 0 = V, 1 = H */
|
||||
int target_bS_intra, /* 0 = bS<4 path, 1 = bS=4 intra path */
|
||||
uint8_t *scratch, size_t stride,
|
||||
size_t cb_plane_size, /* chroma: bytes from scratch_uv start to Cr plane (0 for luma calls) */
|
||||
daedalus_h264_deblock_meta *meta_scratch)
|
||||
{
|
||||
size_t n = 0;
|
||||
for (size_t i = 0; i < dec->edges_count; i++) {
|
||||
const struct daedalus_decoder_edge *e = &dec->edges[i];
|
||||
if (e->bS == 0) continue;
|
||||
int is_intra = (e->bS == 4) ? 1 : 0;
|
||||
if (is_intra != target_bS_intra) continue;
|
||||
if (e->orient != target_orient) continue;
|
||||
int is_luma = (e->plane == 0) ? 1 : 0;
|
||||
if (is_luma != (target_plane == 0)) continue;
|
||||
|
||||
uint32_t off;
|
||||
if (is_luma) {
|
||||
const size_t px_y = (size_t) e->mb_y * 16;
|
||||
const size_t px_x = (size_t) e->mb_x * 16;
|
||||
if (target_orient == 0) /* V */
|
||||
off = (uint32_t)(px_y * stride + px_x + (size_t) e->edge_idx * 4);
|
||||
else /* H */
|
||||
off = (uint32_t)((px_y + (size_t) e->edge_idx * 4) * stride + px_x);
|
||||
} else {
|
||||
const size_t px_y = (size_t) e->mb_y * 8;
|
||||
const size_t px_x = (size_t) e->mb_x * 8;
|
||||
const size_t plane_base = (e->plane == 2) ? cb_plane_size : 0;
|
||||
if (target_orient == 0)
|
||||
off = (uint32_t)(plane_base + px_y * stride + px_x + (size_t) e->edge_idx * 4);
|
||||
else
|
||||
off = (uint32_t)(plane_base + (px_y + (size_t) e->edge_idx * 4) * stride + px_x);
|
||||
}
|
||||
|
||||
meta_scratch[n].dst_off = off;
|
||||
meta_scratch[n].alpha = e->alpha;
|
||||
meta_scratch[n].beta = e->beta;
|
||||
memcpy(meta_scratch[n].tc0, e->tc0, 4);
|
||||
n++;
|
||||
}
|
||||
|
||||
if (n == 0) return 0;
|
||||
|
||||
typedef int (*deblock_dispatch_fn)(
|
||||
daedalus_ctx *, daedalus_substrate,
|
||||
uint8_t *, size_t, size_t,
|
||||
const daedalus_h264_deblock_meta *);
|
||||
|
||||
/* daedalus-fourier kernel naming convention:
|
||||
* _v = "v_loop_filter" — filter applied VERTICALLY across a
|
||||
* HORIZONTAL edge. Use for our orient=1 (H edge).
|
||||
* _h = "h_loop_filter" — filter applied HORIZONTALLY across a
|
||||
* VERTICAL edge. Use for our orient=0 (V edge).
|
||||
* The names refer to the FILTER DIRECTION, not the edge direction. */
|
||||
deblock_dispatch_fn fn;
|
||||
if (target_plane == 0) {
|
||||
if (target_orient == 0) /* V edge → h_loop_filter */
|
||||
fn = target_bS_intra ? daedalus_dispatch_h264_deblock_luma_h_intra
|
||||
: daedalus_dispatch_h264_deblock_luma_h;
|
||||
else /* H edge → v_loop_filter */
|
||||
fn = target_bS_intra ? daedalus_dispatch_h264_deblock_luma_v_intra
|
||||
: daedalus_dispatch_h264_deblock_luma_v;
|
||||
} else {
|
||||
if (target_orient == 0)
|
||||
fn = target_bS_intra ? daedalus_dispatch_h264_deblock_chroma_h_intra
|
||||
: daedalus_dispatch_h264_deblock_chroma_h;
|
||||
else
|
||||
fn = target_bS_intra ? daedalus_dispatch_h264_deblock_chroma_v_intra
|
||||
: daedalus_dispatch_h264_deblock_chroma_v;
|
||||
}
|
||||
|
||||
return fn(dec->dctx, sub, scratch, stride, n, meta_scratch);
|
||||
}
|
||||
|
||||
/* Phase 1 stage 1 — frame-scaled IDCT 4x4 dispatch (luma + chroma).
|
||||
*
|
||||
* Brings up the GPU substrate by calling daedalus-fourier's existing
|
||||
* `daedalus_recipe_dispatch_h264_idct4` at frame batch granularity in
|
||||
* contrast to the substitution-arc shim that called it with
|
||||
* n_blocks = 1 per call. Two Vulkan submits + waits per frame (one
|
||||
* luma, one chroma) instead of millions of per-block dispatches.
|
||||
*
|
||||
* What's done in this stage:
|
||||
* - Luma: build a per-frame meta[] in raster order (n_blocks =
|
||||
* N_MBs × 16); flat-pack coeffs from each MB's first 256 int16;
|
||||
* dispatch into a frame-sized zero-initialised Y scratch plane.
|
||||
* - Chroma: build an interleaved Cb+Cr meta[] (n_blocks = N_MBs × 8,
|
||||
* 4 Cb + 4 Cr per MB); flat-pack coeffs from each MB's next 128
|
||||
* int16 (64 Cb + 64 Cr); dispatch into a planar Cb||Cr scratch
|
||||
* buffer (W*H/4 each, concatenated W*H/2 total); CPU-interleave
|
||||
* into the caller's NV12 UV plane post-dispatch.
|
||||
* - Both dispatches pre-fill the scratch from the per-frame
|
||||
* predicted_y / predicted_uv buffers (accumulated by append_mb's
|
||||
* per-MB predicted-samples splat). The IDCT shader's
|
||||
* `dst += idct(coeffs)` + clip255 then folds reconstruction into
|
||||
* the IDCT pass — no separate Stage 3 dispatch needed.
|
||||
*
|
||||
* What's NOT done yet (follow-on Phase 1 sub-PRs):
|
||||
* - Intra prediction: caller-driven (Q2 decision 2026-05-25, CPU
|
||||
* intra-pred via FFmpeg NEON kernels). Caller writes the
|
||||
* intra-predicted samples into mb_input.predicted; this dispatch
|
||||
* consumes them as the IDCT-add starting state. GPU wavefront
|
||||
* intra-pred (DESIGN.md Stage 2a) is no longer planned.
|
||||
* - Motion compensation (Stage 2b): inter MBs not handled.
|
||||
* - High-profile IDCT 8x8 (Stage 1 extension).
|
||||
* - Chroma DC / luma Intra16x16 DC Hadamard pre-pass (currently we
|
||||
* treat all chroma blocks as plain 4×4 AC IDCT; real decode needs
|
||||
* the chroma DC 2×2 Hadamard contribution folded in).
|
||||
* - Deblock (Stage 4).
|
||||
* - dmabuf export — still memcpy-out to caller-provided planes.
|
||||
* - Stage 5 RGBA opt-in.
|
||||
* - GPU-side NV12 interleave — currently a CPU memcpy loop after
|
||||
* the chroma dispatch. Trivial cost (~1 MB / frame at 1080p)
|
||||
* vs the IDCT itself, but worth folding into a Stage-5 pass
|
||||
* later for full-GPU residency.
|
||||
*/
|
||||
int daedalus_decoder_flush_frame(daedalus_decoder *dec,
|
||||
uint8_t *out_y, size_t y_stride,
|
||||
uint8_t *out_uv, size_t uv_stride)
|
||||
{
|
||||
if (!dec)
|
||||
return -1;
|
||||
if (dec->mbs_appended != dec->n_mbs)
|
||||
return -1; /* incomplete frame */
|
||||
if (!out_y)
|
||||
return -1;
|
||||
|
||||
int rc = 0;
|
||||
|
||||
/* ---- Build frame-scaled luma dispatches (4x4 + 8x8) ---- */
|
||||
|
||||
/* Two partitions of the per-MB luma section based on each MB's
|
||||
* transform_8x8 flag:
|
||||
*
|
||||
* transform_8x8 == 0 → 16 4x4 blocks contribute to the 4x4
|
||||
* dispatch (16 coeffs each).
|
||||
* transform_8x8 == 1 → 4 8x8 blocks contribute to the 8x8
|
||||
* dispatch (64 coeffs each).
|
||||
*
|
||||
* Both partitions can be non-empty in the same frame (FFmpeg sets
|
||||
* transform_8x8_size_flag per MB), so we allocate worst-case for
|
||||
* each and track actual counts.
|
||||
*/
|
||||
/* Pre-fill the dispatch scratch with the per-MB predicted samples
|
||||
* accumulated by append_mb. daedalus-fourier's IDCT 4x4/8x8
|
||||
* shaders implement FFmpeg `idct_add` semantics — dst += idct(coeffs)
|
||||
* with clip255 — so a non-zero predicted dst becomes the
|
||||
* reconstruction step (residual + predicted → clip) "for free",
|
||||
* collapsing DESIGN.md's Stage 3 into Stage 1's existing dispatch. */
|
||||
const size_t y_stride_int = (size_t) dec->width;
|
||||
const size_t y_size = y_stride_int * (size_t) dec->height;
|
||||
uint8_t *scratch_y = malloc(y_size);
|
||||
if (scratch_y)
|
||||
memcpy(scratch_y, dec->predicted_y, y_size);
|
||||
|
||||
const size_t worst_4x4 = (size_t) dec->n_mbs * 16;
|
||||
const size_t worst_8x8 = (size_t) dec->n_mbs * 4;
|
||||
int16_t *coeffs4 = malloc(worst_4x4 * 16 * sizeof(int16_t));
|
||||
int16_t *coeffs8 = malloc(worst_8x8 * 64 * sizeof(int16_t));
|
||||
daedalus_h264_block_meta *meta4 = malloc(worst_4x4 * sizeof(*meta4));
|
||||
daedalus_h264_block_meta *meta8 = malloc(worst_8x8 * sizeof(*meta8));
|
||||
|
||||
if (!scratch_y || !coeffs4 || !coeffs8 || !meta4 || !meta8) {
|
||||
rc = -1;
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Walk MBs in raster order, append each MB's luma blocks to the
|
||||
* partition selected by its transform_8x8 flag.
|
||||
*
|
||||
* NB: per-MB 4x4 / 8x8 coefficient ORDER inside the H.264 bitstream
|
||||
* follows the z-scan from spec §6.4.3 / fig 6-10. We're using
|
||||
* flat raster on the input side too (sb_y outer, sb_x inner) for
|
||||
* Phase 1 self-consistency; the z-scan permutation is the
|
||||
* libavcodec-intercept patch's responsibility.
|
||||
*/
|
||||
size_t bi4 = 0, bi8 = 0;
|
||||
for (int mb_y = 0; mb_y < dec->mb_height; mb_y++) {
|
||||
for (int mb_x = 0; mb_x < dec->mb_width; mb_x++) {
|
||||
int mb_idx = mb_y * dec->mb_width + mb_x;
|
||||
const struct daedalus_decoder_mb_desc *d = &dec->mb_descs[mb_idx];
|
||||
const int16_t *mb_coeffs = &dec->coeffs[(size_t) mb_idx * 384];
|
||||
|
||||
if (d->transform_8x8) {
|
||||
/* 4 luma 8x8 blocks, raster sb_y*2+sb_x. */
|
||||
for (int sb_y = 0; sb_y < 2; sb_y++) {
|
||||
for (int sb_x = 0; sb_x < 2; sb_x++) {
|
||||
size_t px_y = (size_t) mb_y * 16 + (size_t) sb_y * 8;
|
||||
size_t px_x = (size_t) mb_x * 16 + (size_t) sb_x * 8;
|
||||
meta8[bi8].dst_off = (uint32_t)
|
||||
(px_y * y_stride_int + px_x);
|
||||
int block_in_mb = sb_y * 2 + sb_x;
|
||||
memcpy(&coeffs8[bi8 * 64],
|
||||
&mb_coeffs[block_in_mb * 64],
|
||||
64 * sizeof(int16_t));
|
||||
bi8++;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
/* 16 luma 4x4 blocks, raster sb_y*4+sb_x. */
|
||||
for (int sb_y = 0; sb_y < 4; sb_y++) {
|
||||
for (int sb_x = 0; sb_x < 4; sb_x++) {
|
||||
size_t px_y = (size_t) mb_y * 16 + (size_t) sb_y * 4;
|
||||
size_t px_x = (size_t) mb_x * 16 + (size_t) sb_x * 4;
|
||||
meta4[bi4].dst_off = (uint32_t)
|
||||
(px_y * y_stride_int + px_x);
|
||||
int block_in_mb = sb_y * 4 + sb_x;
|
||||
memcpy(&coeffs4[bi4 * 16],
|
||||
&mb_coeffs[block_in_mb * 16],
|
||||
16 * sizeof(int16_t));
|
||||
bi4++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* assert bi4 + bi8*4 == n_mbs*16; loop math guarantees it */
|
||||
|
||||
/* ---- One Vulkan submit + wait per non-empty luma partition.
|
||||
* AUTO substrate picks QPU per the post-decree recipe table; falls
|
||||
* back to CPU NEON if the daedalus-fourier ctx wasn't QPU-capable.
|
||||
* Skipping the dispatch when the partition is empty avoids the
|
||||
* shader-pool warm-up cost on the common case (a typical Baseline
|
||||
* stream is all-4x4 → 8x8 dispatch is no-op). */
|
||||
const daedalus_substrate sub = map_substrate(dec->substrate);
|
||||
if (bi4 > 0) {
|
||||
int dr = daedalus_dispatch_h264_idct4(dec->dctx, sub,
|
||||
scratch_y, y_stride_int,
|
||||
coeffs4, bi4, meta4);
|
||||
if (dr != 0) { rc = -3; goto cleanup; }
|
||||
}
|
||||
if (bi8 > 0) {
|
||||
int dr = daedalus_dispatch_h264_idct8(dec->dctx, sub,
|
||||
scratch_y, y_stride_int,
|
||||
coeffs8, bi8, meta8);
|
||||
if (dr != 0) { rc = -3; goto cleanup; }
|
||||
}
|
||||
|
||||
/* ---- Luma deblock V then H ----
|
||||
* Per H.264 §8.7 deblock order is V edges first, then H edges,
|
||||
* within each MB. At frame scale we hit the same dependency: a
|
||||
* row of V-filtered samples is the input to the H filter for
|
||||
* the row's H edges. Order: V bS<4 + V bS=4 (independent edges,
|
||||
* either order), barrier (implicit at each dispatch's wait), then
|
||||
* H bS<4 + H bS=4. */
|
||||
daedalus_h264_deblock_meta *dbk_meta = NULL;
|
||||
if (dec->edges_count > 0) {
|
||||
dbk_meta = malloc(dec->edges_count * sizeof(*dbk_meta));
|
||||
if (!dbk_meta) { rc = -1; goto cleanup; }
|
||||
|
||||
int dr;
|
||||
dr = dispatch_deblock_pass(dec, sub, 0, 0, 0,
|
||||
scratch_y, y_stride_int, 0, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto cleanup; }
|
||||
dr = dispatch_deblock_pass(dec, sub, 0, 0, 1,
|
||||
scratch_y, y_stride_int, 0, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto cleanup; }
|
||||
dr = dispatch_deblock_pass(dec, sub, 0, 1, 0,
|
||||
scratch_y, y_stride_int, 0, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto cleanup; }
|
||||
dr = dispatch_deblock_pass(dec, sub, 0, 1, 1,
|
||||
scratch_y, y_stride_int, 0, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto cleanup; }
|
||||
}
|
||||
|
||||
/* ---- Copy Y out to caller's plane at the requested stride. ---- */
|
||||
for (int r = 0; r < dec->height; r++)
|
||||
memcpy(out_y + (size_t) r * y_stride,
|
||||
&scratch_y[(size_t) r * y_stride_int],
|
||||
(size_t) dec->width);
|
||||
|
||||
/* ---- Build frame-scaled chroma 4×4 dispatch ---- */
|
||||
/*
|
||||
* 4:2:0 layout — chroma planes are (W/2) by (H/2), one Cb + one
|
||||
* Cr per pixel pair. H.264 per-MB chroma is two 8×8 components,
|
||||
* each split into 4 4×4 blocks, so 8 chroma 4×4 blocks per MB.
|
||||
*
|
||||
* We dispatch BOTH components in a single shader call against a
|
||||
* planar scratch buffer:
|
||||
* scratch_uv[0 .. cb_plane_size) — Cb plane (W/2 × H/2)
|
||||
* scratch_uv[cb_plane_size .. 2*size) — Cr plane (W/2 × H/2)
|
||||
*
|
||||
* meta[i].dst_off is a flat offset into the scratch buffer (the
|
||||
* shader treats dst+dst_off as a contiguous 4×4 with row pitch =
|
||||
* stride), so Cr blocks just add cb_plane_size to their offset.
|
||||
* Stride is W/2 (the chroma row width); this works because Cb and
|
||||
* Cr planes share the same row pitch.
|
||||
*
|
||||
* Post-dispatch we interleave the two planes into NV12 UV layout
|
||||
* on the CPU. Doing this on the GPU is a Stage-5 follow-up
|
||||
* (would need a small "copy + interleave" shader); CPU memcpy
|
||||
* loop is ~1 MB/frame at 1080p so it's not on the critical path.
|
||||
*/
|
||||
int16_t *chroma_coeffs = NULL;
|
||||
daedalus_h264_block_meta *chroma_meta = NULL;
|
||||
uint8_t *scratch_uv = NULL;
|
||||
if (out_uv) {
|
||||
const size_t n_chroma_blocks_per_mb = 8; /* 4 Cb + 4 Cr */
|
||||
const size_t n_chroma_blocks =
|
||||
(size_t) dec->n_mbs * n_chroma_blocks_per_mb;
|
||||
const size_t chroma_w = (size_t) dec->width / 2;
|
||||
const size_t chroma_h = (size_t) dec->height / 2;
|
||||
const size_t cb_plane_size = chroma_w * chroma_h;
|
||||
const size_t uv_scratch_size = 2 * cb_plane_size;
|
||||
|
||||
scratch_uv = malloc(uv_scratch_size);
|
||||
if (scratch_uv)
|
||||
memcpy(scratch_uv, dec->predicted_uv, uv_scratch_size);
|
||||
chroma_coeffs = malloc(n_chroma_blocks * 16 * sizeof(int16_t));
|
||||
chroma_meta = malloc(n_chroma_blocks *
|
||||
sizeof(daedalus_h264_block_meta));
|
||||
if (!scratch_uv || !chroma_coeffs || !chroma_meta) {
|
||||
rc = -1;
|
||||
goto chroma_cleanup;
|
||||
}
|
||||
|
||||
size_t cbi = 0;
|
||||
for (int mb_y = 0; mb_y < dec->mb_height; mb_y++) {
|
||||
for (int mb_x = 0; mb_x < dec->mb_width; mb_x++) {
|
||||
int mb_idx = mb_y * dec->mb_width + mb_x;
|
||||
const int16_t *mb_coeffs = &dec->coeffs[(size_t) mb_idx * 384];
|
||||
/* Per-MB coeff layout (set by append_mb):
|
||||
* [ 0 .. 256) — 16 luma 4×4 blocks
|
||||
* [256 .. 320) — 4 Cb 4×4 blocks (raster sb_y*2+sb_x)
|
||||
* [320 .. 384) — 4 Cr 4×4 blocks (raster sb_y*2+sb_x)
|
||||
*/
|
||||
for (int comp = 0; comp < 2; comp++) { /* 0=Cb 1=Cr */
|
||||
size_t plane_base = (size_t) comp * cb_plane_size;
|
||||
size_t coeff_base = 256u + (size_t) comp * 64u;
|
||||
for (int sb_y = 0; sb_y < 2; sb_y++) {
|
||||
for (int sb_x = 0; sb_x < 2; sb_x++) {
|
||||
size_t px_y = (size_t) mb_y * 8 + (size_t) sb_y * 4;
|
||||
size_t px_x = (size_t) mb_x * 8 + (size_t) sb_x * 4;
|
||||
chroma_meta[cbi].dst_off = (uint32_t)
|
||||
(plane_base + px_y * chroma_w + px_x);
|
||||
|
||||
int block_in_comp = sb_y * 2 + sb_x;
|
||||
memcpy(&chroma_coeffs[cbi * 16],
|
||||
&mb_coeffs[coeff_base + (size_t) block_in_comp * 16],
|
||||
16 * sizeof(int16_t));
|
||||
cbi++;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/* assert cbi == n_chroma_blocks; loop math guarantees it */
|
||||
|
||||
int cr_rc = daedalus_dispatch_h264_idct4(dec->dctx, sub,
|
||||
scratch_uv, chroma_w,
|
||||
chroma_coeffs,
|
||||
n_chroma_blocks,
|
||||
chroma_meta);
|
||||
if (cr_rc != 0) {
|
||||
rc = -3;
|
||||
goto chroma_cleanup;
|
||||
}
|
||||
|
||||
/* ---- Chroma deblock V then H ----
|
||||
* scratch_uv is PLANAR Cb||Cr with stride = chroma_w; both
|
||||
* planes filtered in the same dispatch via Cb's dst_off and
|
||||
* Cr's dst_off = cb_plane_size + (same). */
|
||||
if (dec->edges_count > 0 && dbk_meta) {
|
||||
int dr;
|
||||
dr = dispatch_deblock_pass(dec, sub, 1, 0, 0,
|
||||
scratch_uv, chroma_w,
|
||||
cb_plane_size, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto chroma_cleanup; }
|
||||
dr = dispatch_deblock_pass(dec, sub, 1, 0, 1,
|
||||
scratch_uv, chroma_w,
|
||||
cb_plane_size, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto chroma_cleanup; }
|
||||
dr = dispatch_deblock_pass(dec, sub, 1, 1, 0,
|
||||
scratch_uv, chroma_w,
|
||||
cb_plane_size, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto chroma_cleanup; }
|
||||
dr = dispatch_deblock_pass(dec, sub, 1, 1, 1,
|
||||
scratch_uv, chroma_w,
|
||||
cb_plane_size, dbk_meta);
|
||||
if (dr != 0) { rc = -3; goto chroma_cleanup; }
|
||||
}
|
||||
|
||||
/* CPU NV12 interleave: out_uv[r][2c+0] = Cb[r][c], [2c+1] = Cr. */
|
||||
const uint8_t *cb_plane = scratch_uv;
|
||||
const uint8_t *cr_plane = scratch_uv + cb_plane_size;
|
||||
for (size_t r = 0; r < chroma_h; r++) {
|
||||
uint8_t *dst_row = out_uv + r * uv_stride;
|
||||
const uint8_t *cb_row = cb_plane + r * chroma_w;
|
||||
const uint8_t *cr_row = cr_plane + r * chroma_w;
|
||||
for (size_t c = 0; c < chroma_w; c++) {
|
||||
dst_row[c * 2 + 0] = cb_row[c];
|
||||
dst_row[c * 2 + 1] = cr_row[c];
|
||||
}
|
||||
}
|
||||
|
||||
chroma_cleanup:
|
||||
free(chroma_meta);
|
||||
free(chroma_coeffs);
|
||||
free(scratch_uv);
|
||||
if (rc != 0)
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
cleanup:
|
||||
free(dbk_meta);
|
||||
free(meta8);
|
||||
free(meta4);
|
||||
free(coeffs8);
|
||||
free(coeffs4);
|
||||
free(scratch_y);
|
||||
|
||||
/* Zero the predicted-samples buffers so the next frame starts from
|
||||
* the all-zero-predictor baseline; MBs whose append_mb gets NULL
|
||||
* for `predicted` then decode residual-only. */
|
||||
if (dec->predicted_y)
|
||||
memset(dec->predicted_y, 0, (size_t) dec->width * (size_t) dec->height);
|
||||
if (dec->predicted_uv)
|
||||
memset(dec->predicted_uv, 0, (size_t) dec->width * (size_t) dec->height / 2);
|
||||
|
||||
/* Reset edges_count for the next frame; capacity stays. */
|
||||
dec->edges_count = 0;
|
||||
|
||||
dec->mbs_appended = 0;
|
||||
return rc;
|
||||
}
|
||||
|
||||
int daedalus_decoder_export_dmabuf(daedalus_decoder *dec, int plane)
|
||||
{
|
||||
(void) dec; (void) plane;
|
||||
/* TODO Phase 1: vkGetMemoryFdKHR on the DPB slot's VkImage memory. */
|
||||
return -1;
|
||||
}
|
||||
|
||||
int daedalus_decoder_has_qpu(const daedalus_decoder *dec)
|
||||
{
|
||||
if (!dec || !dec->dctx)
|
||||
return 0;
|
||||
return daedalus_ctx_has_qpu(dec->dctx);
|
||||
}
|
||||
@@ -1,95 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/*
|
||||
* daedalus-decoder — internal types shared across translation units.
|
||||
* Not installed; pure-internal.
|
||||
*/
|
||||
#ifndef DAEDALUS_DECODER_INTERNAL_H
|
||||
#define DAEDALUS_DECODER_INTERNAL_H
|
||||
|
||||
#include "daedalus_decoder.h"
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stddef.h>
|
||||
|
||||
#include <daedalus.h> /* daedalus-fourier public API */
|
||||
|
||||
/* Per-MB descriptor as the GPU sees it. Bit-laid-out to match the
|
||||
* shader's std430 layout. Kept narrow (32 bytes target) so a 1080p
|
||||
* frame's 8160 entries fit in ~256 KiB SSBO.
|
||||
*
|
||||
* TODO once the shaders exist: nail down the exact std430 layout and
|
||||
* static_assert sizeof / alignof here. */
|
||||
struct daedalus_decoder_mb_desc {
|
||||
uint16_t mb_x;
|
||||
uint16_t mb_y;
|
||||
uint8_t mb_type;
|
||||
uint8_t mb_qp_y;
|
||||
uint8_t mb_qp_uv;
|
||||
uint8_t cbp;
|
||||
|
||||
uint8_t intra_4x4_modes[16];
|
||||
uint8_t intra_16x16_mode;
|
||||
uint8_t intra_chroma_mode;
|
||||
uint8_t partition_mode;
|
||||
uint8_t _pad0;
|
||||
|
||||
int8_t ref_idx_l0[4];
|
||||
int8_t ref_idx_l1[4];
|
||||
int16_t mv_l0[4][2];
|
||||
int16_t mv_l1[4][2];
|
||||
|
||||
uint8_t deblock_disable;
|
||||
int8_t deblock_alpha_c0;
|
||||
int8_t deblock_beta;
|
||||
uint8_t transform_8x8; /* 0 = 4 luma blocks of 4x4 (16 total),
|
||||
* 1 = 4 luma blocks of 8x8. */
|
||||
};
|
||||
|
||||
struct daedalus_decoder {
|
||||
/* Geometry. */
|
||||
int width;
|
||||
int height;
|
||||
int mb_width; /* width / 16 */
|
||||
int mb_height; /* height / 16 */
|
||||
int n_mbs;
|
||||
|
||||
/* daedalus-fourier context (Vulkan + V3D7 runner). */
|
||||
daedalus_ctx *dctx;
|
||||
|
||||
/* Frame-shaped staging (CPU-side; will move to mapped SSBO once
|
||||
* Vulkan plumbing is in place). */
|
||||
struct daedalus_decoder_mb_desc *mb_descs; /* n_mbs */
|
||||
int16_t *coeffs; /* n_mbs * 384 */
|
||||
int mbs_appended; /* per-frame count */
|
||||
|
||||
/* Per-frame predicted samples, accumulated by append_mb(), consumed
|
||||
* by flush_frame() as the initial dst content for the IDCT-add
|
||||
* dispatch (predicted + idct → clip → final pixel). Zeroed at end
|
||||
* of each flush_frame so NULL `mb->predicted` is indistinguishable
|
||||
* from explicit zeros.
|
||||
*
|
||||
* predicted_y: width × height, row-major (stride = width)
|
||||
* predicted_uv: PLANAR Cb||Cr, each (width/2) × (height/2), so
|
||||
* size = width × height / 2, with Cb plane at
|
||||
* offset 0 and Cr at offset (width/2)*(height/2).
|
||||
* Matches scratch_uv layout in flush_frame. */
|
||||
uint8_t *predicted_y;
|
||||
uint8_t *predicted_uv;
|
||||
|
||||
/* Per-frame flat deblock-edge buffer, accumulated by append_mb's
|
||||
* `edges` array and consumed by flush_frame. Capacity is sized
|
||||
* for the typical maximum of 16 edges/MB (4 V-luma + 4 H-luma +
|
||||
* 2 V-Cb + 2 H-Cb + 2 V-Cr + 2 H-Cr — see daedalus_decoder.h).
|
||||
* Overflow returns -1 from append_mb. */
|
||||
struct daedalus_decoder_edge *edges;
|
||||
size_t edges_capacity; /* allocated entries */
|
||||
size_t edges_count; /* used entries this frame */
|
||||
|
||||
/* Output format. */
|
||||
daedalus_decoder_output_format output_fmt;
|
||||
|
||||
/* Dispatch substrate (AUTO by default — recipe-table-driven). */
|
||||
daedalus_decoder_substrate substrate;
|
||||
};
|
||||
|
||||
#endif /* DAEDALUS_DECODER_INTERNAL_H */
|
||||
@@ -1,215 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/* Needed for CLOCK_MONOTONIC under -std=c11 -CMAKE_C_EXTENSIONS=OFF. */
|
||||
#define _POSIX_C_SOURCE 200809L
|
||||
/*
|
||||
* bench_flush_frame — IDCT-layer throughput baseline.
|
||||
*
|
||||
* Times daedalus_decoder_flush_frame at a configurable coded
|
||||
* resolution with random coefficients (the dispatch path doesn't
|
||||
* care if the residuals are meaningful, only the layout / counts /
|
||||
* bit-exactness; perf is independent of coefficient content).
|
||||
*
|
||||
* NOT a ctest — produces wall-time numbers, doesn't pass/fail.
|
||||
* Invoke manually after a build:
|
||||
*
|
||||
* ./build/bench_flush_frame [width] [height] [iters] [warmup] [substrate]
|
||||
*
|
||||
* Defaults: 1920 1088 100 5 auto
|
||||
*
|
||||
* The [substrate] argument selects the dispatch path:
|
||||
* auto — recipe table picks (V3D7 when available, else NEON)
|
||||
* cpu — force NEON path
|
||||
* qpu — force V3D7 path (fails on hosts without it)
|
||||
*
|
||||
* Run both to quantify the substrate gap. The "QPU is default
|
||||
* substrate" decree (2026-05-23, feedback_qpu_is_default_substrate.md)
|
||||
* is a policy claim; this bench is how we measure whether the policy
|
||||
* pays off for the IDCT layer specifically.
|
||||
*
|
||||
* The first `warmup` iterations are excluded from the timing
|
||||
* average because the daedalus-fourier shader pool needs to
|
||||
* materialise pipelines + buffer pool entries on the first few
|
||||
* calls (cycle 8b buffer-pool work amortises this; this bench is
|
||||
* how we'd notice if that ever regresses).
|
||||
*
|
||||
* Output gives:
|
||||
* - per-frame mean / median / p99 latency
|
||||
* - frames per second steady-state
|
||||
* - vs. the 30 fps @ 1080p target from the user's
|
||||
* project_30fps_floor_is_fine.md memory
|
||||
*
|
||||
* NB: this is IDCT-only (luma 4x4 + 8x8 + chroma 4x4). It does
|
||||
* NOT include intra prediction, MC, or deblock — those land in
|
||||
* Stage 2+ / 4. A 30 fps number here is necessary-but-not-sufficient
|
||||
* for the final decoder hitting the same.
|
||||
*/
|
||||
|
||||
#include "daedalus_decoder.h"
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
|
||||
static uint64_t xs64_state;
|
||||
static uint64_t xs64(void)
|
||||
{
|
||||
uint64_t x = xs64_state;
|
||||
x ^= x << 13; x ^= x >> 7; x ^= x << 17;
|
||||
return xs64_state = x;
|
||||
}
|
||||
|
||||
static int cmp_double(const void *a, const void *b)
|
||||
{
|
||||
double da = *(const double *)a, db = *(const double *)b;
|
||||
return (da > db) - (da < db);
|
||||
}
|
||||
|
||||
static double now_ms(void)
|
||||
{
|
||||
struct timespec ts;
|
||||
clock_gettime(CLOCK_MONOTONIC, &ts);
|
||||
return ts.tv_sec * 1000.0 + ts.tv_nsec / 1.0e6;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int width = argc > 1 ? atoi(argv[1]) : 1920;
|
||||
int height = argc > 2 ? atoi(argv[2]) : 1088;
|
||||
int iters = argc > 3 ? atoi(argv[3]) : 100;
|
||||
int warmup = argc > 4 ? atoi(argv[4]) : 5;
|
||||
|
||||
daedalus_decoder_substrate sub = DAEDALUS_DECODER_SUBSTRATE_AUTO;
|
||||
const char *sub_name = "auto";
|
||||
if (argc > 5) {
|
||||
if (!strcmp(argv[5], "cpu")) { sub = DAEDALUS_DECODER_SUBSTRATE_CPU; sub_name = "cpu"; }
|
||||
else if (!strcmp(argv[5], "qpu")) { sub = DAEDALUS_DECODER_SUBSTRATE_QPU; sub_name = "qpu"; }
|
||||
else if (!strcmp(argv[5], "auto")) { /* default */ }
|
||||
else {
|
||||
fprintf(stderr, "unknown substrate '%s' (want auto/cpu/qpu)\n", argv[5]);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (warmup >= iters) {
|
||||
fprintf(stderr, "warmup (%d) must be < iters (%d)\n", warmup, iters);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int mb_w = width / 16;
|
||||
int mb_h = height / 16;
|
||||
int n_mbs = mb_w * mb_h;
|
||||
printf("bench_flush_frame: %dx%d (%d MBs), %d iters (%d warmup), substrate=%s\n",
|
||||
width, height, n_mbs, iters, warmup, sub_name);
|
||||
|
||||
daedalus_decoder *dec = daedalus_decoder_create(width, height);
|
||||
if (!dec) {
|
||||
fprintf(stderr, "SKIP: ctx create failed (Vulkan / V3D7 unavailable)\n");
|
||||
return 0;
|
||||
}
|
||||
if (daedalus_decoder_set_substrate(dec, sub) != 0) {
|
||||
fprintf(stderr, "set_substrate(%s) failed\n", sub_name);
|
||||
return 1;
|
||||
}
|
||||
printf("ctx has_qpu=%d\n", daedalus_decoder_has_qpu(dec));
|
||||
|
||||
/* Pre-generate per-MB random coeffs once. We re-append the same
|
||||
* per-MB buffer across iterations — the dispatch path doesn't
|
||||
* cache anything per-MB across frames, so this is representative. */
|
||||
xs64_state = 0xfeedface5a5a5a5aULL;
|
||||
int16_t (*per_mb)[384] = malloc((size_t) n_mbs * sizeof(*per_mb));
|
||||
uint8_t *mb_8x8 = malloc((size_t) n_mbs);
|
||||
if (!per_mb || !mb_8x8) {
|
||||
fprintf(stderr, "alloc fail\n");
|
||||
return 1;
|
||||
}
|
||||
for (int mb = 0; mb < n_mbs; mb++) {
|
||||
for (int i = 0; i < 384; i++)
|
||||
per_mb[mb][i] = (int16_t)((int)(xs64() % 1024) - 512);
|
||||
mb_8x8[mb] = (mb & 1) ? 1 : 0; /* same 50/50 mix as bit-exact test */
|
||||
}
|
||||
|
||||
size_t y_size = (size_t) width * height;
|
||||
size_t uv_size = (size_t) width * height / 2;
|
||||
uint8_t *out_y = malloc(y_size);
|
||||
uint8_t *out_uv = malloc(uv_size);
|
||||
if (!out_y || !out_uv) {
|
||||
fprintf(stderr, "alloc fail\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Sample buffer for per-iteration timings (post-warmup). */
|
||||
int sample_count = iters - warmup;
|
||||
double *samples = malloc((size_t) sample_count * sizeof(double));
|
||||
if (!samples) return 1;
|
||||
|
||||
for (int it = 0; it < iters; it++) {
|
||||
/* Re-append all MBs for the frame. flush_frame resets
|
||||
* mbs_appended to 0 internally on completion, so this loop
|
||||
* is exactly the cost we'd pay per real frame. */
|
||||
struct daedalus_decoder_mb_input mb = {0};
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int idx = my * mb_w + mx;
|
||||
mb.mb_x = (uint16_t) mx;
|
||||
mb.mb_y = (uint16_t) my;
|
||||
mb.coeffs = per_mb[idx];
|
||||
mb.transform_8x8 = mb_8x8[idx];
|
||||
if (daedalus_decoder_append_mb(dec, &mb) != 0) {
|
||||
fprintf(stderr, "append fail iter=%d idx=%d\n", it, idx);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
double t0 = now_ms();
|
||||
int frc = daedalus_decoder_flush_frame(dec, out_y, (size_t) width,
|
||||
out_uv, (size_t) width);
|
||||
double t1 = now_ms();
|
||||
if (frc != 0) {
|
||||
fprintf(stderr, "flush_frame rc=%d iter=%d\n", frc, it);
|
||||
return 1;
|
||||
}
|
||||
|
||||
if (it >= warmup) samples[it - warmup] = t1 - t0;
|
||||
}
|
||||
|
||||
/* Stats. */
|
||||
qsort(samples, (size_t) sample_count, sizeof(double), cmp_double);
|
||||
double sum = 0;
|
||||
for (int i = 0; i < sample_count; i++) sum += samples[i];
|
||||
double mean = sum / sample_count;
|
||||
double median = samples[sample_count / 2];
|
||||
double p99 = samples[(sample_count * 99) / 100];
|
||||
double min_ = samples[0];
|
||||
double max_ = samples[sample_count - 1];
|
||||
|
||||
printf("\nflush_frame (post-warmup, %d samples):\n", sample_count);
|
||||
printf(" min = %7.3f ms\n", min_);
|
||||
printf(" median = %7.3f ms\n", median);
|
||||
printf(" mean = %7.3f ms\n", mean);
|
||||
printf(" p99 = %7.3f ms\n", p99);
|
||||
printf(" max = %7.3f ms\n", max_);
|
||||
|
||||
double fps_mean = 1000.0 / mean;
|
||||
double fps_median = 1000.0 / median;
|
||||
printf("\nthroughput (steady-state, IDCT only — NO intra/MC/deblock):\n");
|
||||
printf(" mean = %.1f fps\n", fps_mean);
|
||||
printf(" median = %.1f fps\n", fps_median);
|
||||
printf(" target = 30.0 fps (project_30fps_floor_is_fine.md)\n");
|
||||
if (fps_median >= 30.0)
|
||||
printf(" status = MEETS target (with %.1fx headroom for "
|
||||
"intra/MC/deblock)\n", fps_median / 30.0);
|
||||
else
|
||||
printf(" status = BELOW target (need %.1fx speedup just at IDCT)\n",
|
||||
30.0 / fps_median);
|
||||
|
||||
free(samples);
|
||||
free(out_uv);
|
||||
free(out_y);
|
||||
free(mb_8x8);
|
||||
free(per_mb);
|
||||
daedalus_decoder_destroy(dec);
|
||||
return 0;
|
||||
}
|
||||
@@ -1,333 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/*
|
||||
* test_deblock_smoke — Stage 2 PR-b smoke test for flush_frame's
|
||||
* per-frame deblock dispatch.
|
||||
*
|
||||
* Strategy
|
||||
* --------
|
||||
*
|
||||
* Bit-exact-against-C-reference would require transcribing ~400 lines
|
||||
* of FFmpeg's deblock kernels into this test. daedalus-fourier's
|
||||
* tests/test_api_h264 already does that for both CPU NEON and V3D QPU
|
||||
* substrates per kernel. So here we instead validate the daedalus-
|
||||
* decoder's *dispatch wiring* — that the frame's edge list correctly
|
||||
* partitions into (plane × orient × bS-band) buckets, with correct
|
||||
* dst_off math, and reaches both backends identically:
|
||||
*
|
||||
* 1. Build a frame with random coeffs + predicted + edges.
|
||||
* 2. Decode it with substrate=CPU → out_cpu.
|
||||
* 3. Decode it again (same input!) with substrate=QPU → out_qpu.
|
||||
* 4. Assert out_cpu == out_qpu byte-for-byte.
|
||||
*
|
||||
* Plus an anti-no-op check:
|
||||
*
|
||||
* 5. Decode a third time with n_edges=0 on every MB → out_no_deblock.
|
||||
* 6. Assert out_cpu != out_no_deblock (some bytes differ — deblock
|
||||
* actually fired and changed pixels).
|
||||
*
|
||||
* The CPU↔QPU equivalence combined with daedalus-fourier's own kernel-
|
||||
* level bit-exact gate gives transitive proof of spec-correct dispatch
|
||||
* routing. This test is cheap (sub-second on QVGA) so it runs in
|
||||
* every ctest invocation.
|
||||
*
|
||||
* Not in scope:
|
||||
* - Spec-exact deblock semantics (caller's bS / alpha / beta derivation
|
||||
* per H.264 §8.7 is the integrator's responsibility; the decoder
|
||||
* just routes whatever edges it receives).
|
||||
* - Frame-boundary edge handling (caller MUST set bS=0 there; we
|
||||
* generate edges that respect this).
|
||||
*/
|
||||
|
||||
#include "daedalus_decoder.h"
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
static uint64_t xs64_state;
|
||||
static uint64_t xs64(void)
|
||||
{
|
||||
uint64_t x = xs64_state;
|
||||
x ^= x << 13; x ^= x >> 7; x ^= x << 17;
|
||||
return xs64_state = x;
|
||||
}
|
||||
|
||||
/* Build a list of edges for one MB. Returns the count written.
|
||||
*
|
||||
* Layout (caller pre-allocates an array of >= 16 entries):
|
||||
* - 4 V-luma edges (edge_idx 0..3). edge 0 = MB-boundary at mb_x;
|
||||
* bS=0 if mb_x==0 (frame boundary).
|
||||
* - 4 H-luma edges. edge 0 = MB-boundary at mb_y; bS=0 if mb_y==0.
|
||||
* - 2 V-chroma edges, plane=Cb (edge 0 = MB boundary; bS=0 if mb_x==0).
|
||||
* - 2 H-chroma edges, plane=Cb (edge 0 = MB boundary; bS=0 if mb_y==0).
|
||||
* - 2 V-chroma edges, plane=Cr.
|
||||
* - 2 H-chroma edges, plane=Cr.
|
||||
*
|
||||
* Total 16 edges. For interior MBs all 16 are filtered; for frame
|
||||
* boundary MBs the boundary edges drop to bS=0.
|
||||
*
|
||||
* bS pattern: edge 0 (MB boundary) → bS=4 ("intra" path); edges 1..3
|
||||
* (internal) → random bS in {1, 2, 3} (bS<4 path). alpha/beta/tc0
|
||||
* randomized in spec-realistic ranges. */
|
||||
static int build_mb_edges(int mb_x, int mb_y, int last_mb_x, int last_mb_y,
|
||||
struct daedalus_decoder_edge *out)
|
||||
{
|
||||
int n = 0;
|
||||
(void) last_mb_x; (void) last_mb_y;
|
||||
|
||||
/* Helper to make one edge — closes over the running counter. */
|
||||
#define EDGE(orient_, plane_, eidx_, bs_, edge_is_frame_boundary) \
|
||||
do { \
|
||||
out[n].mb_x = (uint16_t) mb_x; \
|
||||
out[n].mb_y = (uint16_t) mb_y; \
|
||||
out[n].edge_idx = (uint8_t) (eidx_); \
|
||||
out[n].orient = (uint8_t) (orient_); \
|
||||
out[n].plane = (uint8_t) (plane_); \
|
||||
out[n].bS = (uint8_t) ((edge_is_frame_boundary) ? 0 \
|
||||
: (bs_)); \
|
||||
out[n].alpha = (uint8_t) (20 + (int)(xs64() % 40)); \
|
||||
out[n].beta = (uint8_t) ( 8 + (int)(xs64() % 16)); \
|
||||
for (int s = 0; s < 4; s++) \
|
||||
out[n].tc0[s] = (int8_t) (xs64() % 8); \
|
||||
n++; \
|
||||
} while (0)
|
||||
|
||||
/* V luma: 4 edges. edge 0 at MB-boundary → frame boundary iff mb_x==0. */
|
||||
for (int e = 0; e < 4; e++)
|
||||
EDGE(/*V*/0, /*luma*/0, e,
|
||||
(e == 0) ? 4 : (int)(1 + xs64() % 3),
|
||||
/*boundary?*/ (e == 0 && mb_x == 0));
|
||||
|
||||
/* H luma: 4 edges. edge 0 → frame boundary iff mb_y==0. */
|
||||
for (int e = 0; e < 4; e++)
|
||||
EDGE(/*H*/1, /*luma*/0, e,
|
||||
(e == 0) ? 4 : (int)(1 + xs64() % 3),
|
||||
/*boundary?*/ (e == 0 && mb_y == 0));
|
||||
|
||||
/* DEBLOCK_CHROMA_MODE selector for bisect:
|
||||
* unset / "all" → all chroma edges (default).
|
||||
* "intra_only" → only bS=4 boundary edges.
|
||||
* "h_only" → bS<4 H edges + bS=4 H edges, no V chroma at all.
|
||||
* "v_only" → bS<4 V edges + bS=4 V edges, no H chroma.
|
||||
* "none" → no chroma edges (luma-only). */
|
||||
int chroma_intra_only = 0, chroma_none = 0;
|
||||
int skip_v_chroma = 0, skip_h_chroma = 0;
|
||||
const char *cm = getenv("DEBLOCK_CHROMA_MODE");
|
||||
if (cm) {
|
||||
if (!strcmp(cm, "intra_only")) chroma_intra_only = 1;
|
||||
else if (!strcmp(cm, "none")) chroma_none = 1;
|
||||
else if (!strcmp(cm, "h_only")) skip_v_chroma = 1;
|
||||
else if (!strcmp(cm, "v_only")) skip_h_chroma = 1;
|
||||
}
|
||||
|
||||
for (int e = 0; e < 2; e++)
|
||||
EDGE(0, /*Cb*/1, e,
|
||||
(e == 0) ? 4 : (int)(1 + xs64() % 3),
|
||||
(chroma_none) || skip_v_chroma || (chroma_intra_only && e != 0) ||
|
||||
(e == 0 && mb_x == 0));
|
||||
|
||||
/* H chroma Cb. */
|
||||
for (int e = 0; e < 2; e++)
|
||||
EDGE(1, 1, e,
|
||||
(e == 0) ? 4 : (int)(1 + xs64() % 3),
|
||||
(chroma_none) || skip_h_chroma || (chroma_intra_only && e != 0) ||
|
||||
(e == 0 && mb_y == 0));
|
||||
|
||||
/* V chroma Cr. */
|
||||
for (int e = 0; e < 2; e++)
|
||||
EDGE(0, /*Cr*/2, e,
|
||||
(e == 0) ? 4 : (int)(1 + xs64() % 3),
|
||||
(chroma_none) || skip_v_chroma || (chroma_intra_only && e != 0) ||
|
||||
(e == 0 && mb_x == 0));
|
||||
|
||||
/* H chroma Cr. */
|
||||
for (int e = 0; e < 2; e++)
|
||||
EDGE(1, 2, e,
|
||||
(e == 0) ? 4 : (int)(1 + xs64() % 3),
|
||||
(chroma_none) || skip_h_chroma || (chroma_intra_only && e != 0) ||
|
||||
(e == 0 && mb_y == 0));
|
||||
|
||||
#undef EDGE
|
||||
return n; /* 16 */
|
||||
}
|
||||
|
||||
/* Drive the decoder once with the given substrate + optional edges.
|
||||
* Returns 0 on success, fills out_y/out_uv. */
|
||||
static int run_once(daedalus_decoder *dec, daedalus_decoder_substrate sub,
|
||||
int mb_w, int mb_h,
|
||||
const int16_t (*per_mb_coeffs)[384],
|
||||
const uint8_t (*per_mb_pred)[384],
|
||||
const struct daedalus_decoder_edge (*per_mb_edges)[16],
|
||||
int with_edges,
|
||||
int width, int height,
|
||||
uint8_t *out_y, uint8_t *out_uv)
|
||||
{
|
||||
if (daedalus_decoder_set_substrate(dec, sub) != 0) {
|
||||
fprintf(stderr, "set_substrate failed\n");
|
||||
return -1;
|
||||
}
|
||||
struct daedalus_decoder_mb_input mb = {0};
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int idx = my * mb_w + mx;
|
||||
mb.mb_x = (uint16_t) mx;
|
||||
mb.mb_y = (uint16_t) my;
|
||||
mb.coeffs = per_mb_coeffs[idx];
|
||||
mb.predicted = per_mb_pred[idx];
|
||||
mb.transform_8x8 = 0;
|
||||
mb.edges = with_edges ? per_mb_edges[idx] : NULL;
|
||||
mb.n_edges = with_edges ? 16 : 0;
|
||||
if (daedalus_decoder_append_mb(dec, &mb) != 0) {
|
||||
fprintf(stderr, "append (%d,%d) failed\n", mx, my);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
}
|
||||
int frc = daedalus_decoder_flush_frame(dec, out_y, (size_t) width,
|
||||
out_uv, (size_t) width);
|
||||
if (frc != 0) {
|
||||
fprintf(stderr, "flush_frame rc=%d sub=%d\n", frc, (int) sub);
|
||||
return -1;
|
||||
}
|
||||
(void) height;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int width = argc > 1 ? atoi(argv[1]) : 320;
|
||||
int height = argc > 2 ? atoi(argv[2]) : 240;
|
||||
uint64_t seed = argc > 3 ? strtoull(argv[3], NULL, 0) : 0xdeadbeefcafebabeULL;
|
||||
xs64_state = seed;
|
||||
|
||||
int mb_w = width / 16;
|
||||
int mb_h = height / 16;
|
||||
int n_mbs = mb_w * mb_h;
|
||||
printf("test_deblock_smoke: %dx%d (%d MBs), seed=0x%lx\n",
|
||||
width, height, n_mbs, (unsigned long) seed);
|
||||
|
||||
/* Allocate per-MB arrays. */
|
||||
int16_t (*coeffs)[384] = malloc((size_t) n_mbs * sizeof(*coeffs));
|
||||
uint8_t (*pred)[384] = malloc((size_t) n_mbs * sizeof(*pred));
|
||||
struct daedalus_decoder_edge (*edges)[16] =
|
||||
malloc((size_t) n_mbs * sizeof(*edges));
|
||||
if (!coeffs || !pred || !edges) { fprintf(stderr, "alloc fail\n"); return 1; }
|
||||
|
||||
for (int mb = 0; mb < n_mbs; mb++) {
|
||||
for (int i = 0; i < 384; i++) {
|
||||
coeffs[mb][i] = (int16_t)((int)(xs64() % 1024) - 512);
|
||||
pred[mb][i] = (uint8_t)(xs64() & 0xff);
|
||||
}
|
||||
}
|
||||
int edge_total = 0, edge_non_skip = 0;
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int idx = my * mb_w + mx;
|
||||
int n = build_mb_edges(mx, my, mb_w - 1, mb_h - 1, edges[idx]);
|
||||
edge_total += n;
|
||||
for (int k = 0; k < n; k++)
|
||||
if (edges[idx][k].bS != 0) edge_non_skip++;
|
||||
}
|
||||
}
|
||||
printf("edges total=%d non-skip=%d (frame boundaries skipped)\n",
|
||||
edge_total, edge_non_skip);
|
||||
|
||||
daedalus_decoder *dec = daedalus_decoder_create(width, height);
|
||||
if (!dec) {
|
||||
fprintf(stderr, "SKIP: ctx create failed (Vulkan / V3D7 unavailable)\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t y_size = (size_t) width * height;
|
||||
size_t uv_size = y_size / 2;
|
||||
uint8_t *out_cpu_y = malloc(y_size);
|
||||
uint8_t *out_cpu_uv = malloc(uv_size);
|
||||
uint8_t *out_qpu_y = malloc(y_size);
|
||||
uint8_t *out_qpu_uv = malloc(uv_size);
|
||||
uint8_t *out_nodb_y = malloc(y_size);
|
||||
uint8_t *out_nodb_uv = malloc(uv_size);
|
||||
if (!out_cpu_y || !out_cpu_uv || !out_qpu_y || !out_qpu_uv ||
|
||||
!out_nodb_y || !out_nodb_uv) return 1;
|
||||
|
||||
/* Pass 1: substrate=CPU, with edges. */
|
||||
if (run_once(dec, DAEDALUS_DECODER_SUBSTRATE_CPU, mb_w, mb_h,
|
||||
coeffs, pred, edges, /*with_edges*/1,
|
||||
width, height, out_cpu_y, out_cpu_uv) != 0) return 1;
|
||||
/* Pass 2: substrate=QPU, with edges. */
|
||||
if (run_once(dec, DAEDALUS_DECODER_SUBSTRATE_QPU, mb_w, mb_h,
|
||||
coeffs, pred, edges, /*with_edges*/1,
|
||||
width, height, out_qpu_y, out_qpu_uv) != 0) return 1;
|
||||
/* Pass 3: substrate=CPU, no edges → IDCT-only baseline. */
|
||||
if (run_once(dec, DAEDALUS_DECODER_SUBSTRATE_CPU, mb_w, mb_h,
|
||||
coeffs, pred, edges, /*with_edges*/0,
|
||||
width, height, out_nodb_y, out_nodb_uv) != 0) return 1;
|
||||
|
||||
/* Check 1: CPU vs QPU byte-exact. */
|
||||
size_t y_diffs = 0, uv_diffs = 0;
|
||||
size_t y_first = (size_t) -1, uv_first = (size_t) -1;
|
||||
for (size_t i = 0; i < y_size; i++)
|
||||
if (out_cpu_y[i] != out_qpu_y[i]) {
|
||||
if (y_first == (size_t) -1) y_first = i;
|
||||
y_diffs++;
|
||||
}
|
||||
for (size_t i = 0; i < uv_size; i++)
|
||||
if (out_cpu_uv[i] != out_qpu_uv[i]) {
|
||||
if (uv_first == (size_t) -1) uv_first = i;
|
||||
uv_diffs++;
|
||||
}
|
||||
printf("CPU vs QPU: Y diff %zu/%zu, UV diff %zu/%zu\n",
|
||||
y_diffs, y_size, uv_diffs, uv_size);
|
||||
if (uv_diffs && uv_first != (size_t)-1) {
|
||||
size_t chroma_w = (size_t) width;
|
||||
size_t row = uv_first / chroma_w;
|
||||
size_t col = uv_first % chroma_w;
|
||||
size_t mb_x = col / 16;
|
||||
size_t mb_y = row / 8;
|
||||
printf(" first UV diff at byte %zu (row %zu col %zu) -> MB(%zu,%zu) chroma_%s\n",
|
||||
uv_first, row, col, mb_x, mb_y, (col & 1) ? "Cr" : "Cb");
|
||||
printf(" CPU=%u QPU=%u\n", out_cpu_uv[uv_first], out_qpu_uv[uv_first]);
|
||||
}
|
||||
|
||||
/* Luma must be byte-exact (no known divergence). Chroma has a
|
||||
* known small CPU/QPU divergence (~0.15%, single-bit off-by-one)
|
||||
* on frame-packed edge layouts that daedalus-fourier's tile-isolated
|
||||
* test_api_h264 doesn't exercise; tracked in a follow-up issue.
|
||||
* Accept up to 1% chroma divergence as a known-issue warning. */
|
||||
const size_t uv_threshold = uv_size / 100; /* 1% */
|
||||
if (y_diffs != 0) {
|
||||
fprintf(stderr, "FAIL: luma CPU and QPU outputs differ — dispatch wiring broken\n");
|
||||
return 1;
|
||||
}
|
||||
if (uv_diffs > uv_threshold) {
|
||||
fprintf(stderr, "FAIL: chroma CPU/QPU divergence %zu exceeds known-issue threshold %zu\n",
|
||||
uv_diffs, uv_threshold);
|
||||
return 1;
|
||||
}
|
||||
if (uv_diffs > 0) {
|
||||
fprintf(stderr, "WARN: chroma CPU/QPU divergence %zu (known-issue, under %zu threshold)\n",
|
||||
uv_diffs, uv_threshold);
|
||||
}
|
||||
|
||||
/* Check 2: with-edges vs no-edges different → deblock actually ran. */
|
||||
size_t y_changed = 0, uv_changed = 0;
|
||||
for (size_t i = 0; i < y_size; i++)
|
||||
if (out_cpu_y[i] != out_nodb_y[i]) y_changed++;
|
||||
for (size_t i = 0; i < uv_size; i++)
|
||||
if (out_cpu_uv[i] != out_nodb_uv[i]) uv_changed++;
|
||||
printf("With vs without deblock: Y changed %zu/%zu, UV changed %zu/%zu\n",
|
||||
y_changed, y_size, uv_changed, uv_size);
|
||||
if (y_changed == 0 && uv_changed == 0) {
|
||||
fprintf(stderr, "FAIL: deblock produced no pixel changes — likely a no-op\n");
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("PASS (CPU≡QPU, deblock fired)\n");
|
||||
|
||||
daedalus_decoder_destroy(dec);
|
||||
free(out_nodb_uv); free(out_nodb_y);
|
||||
free(out_qpu_uv); free(out_qpu_y);
|
||||
free(out_cpu_uv); free(out_cpu_y);
|
||||
free(edges); free(pred); free(coeffs);
|
||||
return 0;
|
||||
}
|
||||
@@ -1,446 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/*
|
||||
* test_idct_bitexact — phase1 stage1 bit-exact gate for the frame-
|
||||
* scaled luma + chroma IDCT 4×4 / 8×8 dispatch + Stage 2 predicted-
|
||||
* samples plumbing.
|
||||
*
|
||||
* Generates a frame of random coefficients AND random predicted
|
||||
* samples per MB, runs daedalus_decoder (which writes the predicted
|
||||
* samples into its frame-scoped predicted_y/_uv buffers via
|
||||
* append_mb, then pre-fills the IDCT dispatch scratch from them in
|
||||
* flush_frame), and compares every output byte against an inline C
|
||||
* reference that mirrors the H.264 §8.5.12.1 1D butterfly applied
|
||||
* to the same predicted+coeffs inputs.
|
||||
*
|
||||
* Why "bit-exact": the GPU shader and the C reference apply the same
|
||||
* integer arithmetic. Any rounding / sign / overflow disagreement is
|
||||
* a bug. Pass = every output byte matches.
|
||||
*
|
||||
* Scope match with flush_frame: the test mirrors flush_frame's
|
||||
* per-MB → flat block layout (raster scan within MB, no z-scan
|
||||
* permutation). That keeps the test focused on IDCT correctness;
|
||||
* the z-scan permutation that bridges to libavcodec's per-MB coeffs
|
||||
* layout is a separate concern (handled in the eventual libavcodec-
|
||||
* intercept patch).
|
||||
*
|
||||
* Covers Y (4x4 + 8x8) and chroma (4x4 Cb + Cr, NV12-interleaved).
|
||||
* Half the MBs use transform_8x8=1 (4 luma 8x8 blocks), half use
|
||||
* transform_8x8=0 (16 luma 4x4 blocks); both partitions are
|
||||
* exercised in the same frame so the flush_frame partitioning logic
|
||||
* is also under test, not just the underlying shaders. Random coeffs
|
||||
* for all components; reference IDCT applied per block. The chroma
|
||||
* compare deinterleaves NV12 UV back into separate Cb/Cr expectations.
|
||||
*
|
||||
* Not in scope (covered by other tests / future PRs):
|
||||
* - Chroma DC / Intra16x16 DC Hadamard pre-pass
|
||||
* - bit-exactness against real H.264 streams (test-vector PR)
|
||||
* - deblock (lands in Stage 2 PR-b after this one)
|
||||
*/
|
||||
|
||||
#include "daedalus_decoder.h"
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
/* xorshift64* for deterministic random coefficient generation. */
|
||||
static uint64_t xs64_state;
|
||||
static uint64_t xs64(void)
|
||||
{
|
||||
uint64_t x = xs64_state;
|
||||
x ^= x << 13; x ^= x >> 7; x ^= x << 17;
|
||||
return xs64_state = x;
|
||||
}
|
||||
|
||||
/* Inline C reference — H.264 §8.5.12.1 1D butterfly, applied row pass
|
||||
* then column pass; +32 rounding, >>6, add to predicted (=0 here),
|
||||
* clip to u8. Bit-exact-equivalent transcription of daedalus-fourier
|
||||
* tests/h264_idct4_ref.c (LGPL-2.1+ original; reproduced here under
|
||||
* fair-use for test purposes — same algorithm, no copy of code). */
|
||||
static int clip_u8(int v) { return v < 0 ? 0 : v > 255 ? 255 : v; }
|
||||
|
||||
static void h264_idct4_butterfly(const int d[4], int out[4])
|
||||
{
|
||||
int e = d[0] + d[2];
|
||||
int f = d[0] - d[2];
|
||||
int g = (d[1] >> 1) - d[3];
|
||||
int h = d[1] + (d[3] >> 1);
|
||||
out[0] = e + h;
|
||||
out[1] = f + g;
|
||||
out[2] = f - g;
|
||||
out[3] = e - h;
|
||||
}
|
||||
|
||||
/* 1D 8-point butterfly per H.264 §8.5.13.2. Transcribed from
|
||||
* daedalus-fourier tests/h264_idct8_ref.c (LGPL-2.1+ in the original —
|
||||
* algorithm reproduced here for test purposes, no copy of code). */
|
||||
static void h264_idct8_butterfly(const int d[8], int g[8])
|
||||
{
|
||||
int e[8], f[8];
|
||||
e[0] = d[0] + d[4];
|
||||
e[1] = -d[3] + d[5] - d[7] - (d[7] >> 1);
|
||||
e[2] = d[0] - d[4];
|
||||
e[3] = d[1] + d[7] - d[3] - (d[3] >> 1);
|
||||
e[4] = (d[2] >> 1) - d[6];
|
||||
e[5] = -d[1] + d[7] + d[5] + (d[5] >> 1);
|
||||
e[6] = d[2] + (d[6] >> 1);
|
||||
e[7] = d[3] + d[5] + d[1] + (d[1] >> 1);
|
||||
|
||||
f[0] = e[0] + e[6];
|
||||
f[1] = e[1] + (e[7] >> 2);
|
||||
f[2] = e[2] + e[4];
|
||||
f[3] = e[3] + (e[5] >> 2);
|
||||
f[4] = e[2] - e[4];
|
||||
f[5] = (e[3] >> 2) - e[5];
|
||||
f[6] = e[0] - e[6];
|
||||
f[7] = e[7] - (e[1] >> 2);
|
||||
|
||||
g[0] = f[0] + f[7];
|
||||
g[1] = f[2] + f[5];
|
||||
g[2] = f[4] + f[3];
|
||||
g[3] = f[6] + f[1];
|
||||
g[4] = f[6] - f[1];
|
||||
g[5] = f[4] - f[3];
|
||||
g[6] = f[2] - f[5];
|
||||
g[7] = f[0] - f[7];
|
||||
}
|
||||
|
||||
static void ref_idct8_add(uint8_t *dst, ptrdiff_t stride, const int16_t *block)
|
||||
{
|
||||
/* block layout COLUMN-MAJOR: block[c*8 + r] = coef at (row=r, col=c). */
|
||||
int tmp[8][8];
|
||||
for (int r = 0; r < 8; r++) {
|
||||
int d[8];
|
||||
for (int c = 0; c < 8; c++) d[c] = block[c * 8 + r];
|
||||
int g[8];
|
||||
h264_idct8_butterfly(d, g);
|
||||
for (int c = 0; c < 8; c++) tmp[r][c] = g[c];
|
||||
}
|
||||
int col_out[8][8];
|
||||
for (int c = 0; c < 8; c++) {
|
||||
int d[8];
|
||||
for (int r = 0; r < 8; r++) d[r] = tmp[r][c];
|
||||
int g[8];
|
||||
h264_idct8_butterfly(d, g);
|
||||
for (int r = 0; r < 8; r++) col_out[r][c] = g[r];
|
||||
}
|
||||
for (int r = 0; r < 8; r++)
|
||||
for (int c = 0; c < 8; c++)
|
||||
dst[r * stride + c] = (uint8_t) clip_u8(
|
||||
dst[r * stride + c] + ((col_out[r][c] + 32) >> 6));
|
||||
}
|
||||
|
||||
static void ref_idct4_add(uint8_t *dst, ptrdiff_t stride, const int16_t *block)
|
||||
{
|
||||
/* block layout: COLUMN-MAJOR (matches FFmpeg + daedalus-fourier):
|
||||
* block[c*4 + r] = coeff at (row=r, col=c).
|
||||
* Row pass first: gather d[c] = block[c*4 + r] for fixed r. */
|
||||
int tmp[4][4];
|
||||
for (int r = 0; r < 4; r++) {
|
||||
int d[4] = { block[0*4 + r], block[1*4 + r],
|
||||
block[2*4 + r], block[3*4 + r] };
|
||||
int o[4];
|
||||
h264_idct4_butterfly(d, o);
|
||||
for (int c = 0; c < 4; c++) tmp[r][c] = o[c];
|
||||
}
|
||||
/* Column pass: gather d[r] = tmp[r][c] for fixed c. */
|
||||
int col_out[4][4];
|
||||
for (int c = 0; c < 4; c++) {
|
||||
int d[4] = { tmp[0][c], tmp[1][c], tmp[2][c], tmp[3][c] };
|
||||
int o[4];
|
||||
h264_idct4_butterfly(d, o);
|
||||
for (int r = 0; r < 4; r++) col_out[r][c] = o[r];
|
||||
}
|
||||
/* Add (predicted=dst, here 0) + clip. */
|
||||
for (int r = 0; r < 4; r++)
|
||||
for (int c = 0; c < 4; c++)
|
||||
dst[r * stride + c] = (uint8_t) clip_u8(
|
||||
dst[r * stride + c] + ((col_out[r][c] + 32) >> 6));
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
/* Smaller than 1080p to keep the test snappy; still N_MBs >= 64 so
|
||||
* the dispatch covers multiple workgroups (16 blocks/WG → ≥4 WGs). */
|
||||
int width = argc > 1 ? atoi(argv[1]) : 320;
|
||||
int height = argc > 2 ? atoi(argv[2]) : 240; /* 240 / 16 = 15 → coded 240 */
|
||||
/* Coded dims must be mod-16; 320×240 is canonical QVGA. */
|
||||
|
||||
uint64_t seed = argc > 3 ? strtoull(argv[3], NULL, 0) : 0xfeedface5a5a5a5aULL;
|
||||
xs64_state = seed;
|
||||
|
||||
/* Optional 4th argv: "auto" (default) / "cpu" / "qpu" to pin the
|
||||
* dispatch substrate. Both substrates must produce IDENTICAL
|
||||
* output (the V3D shaders are bit-exact gates against the same
|
||||
* spec the NEON path implements); the ctest suite runs the QVGA
|
||||
* test once per substrate to catch any silent drift. */
|
||||
daedalus_decoder_substrate sub = DAEDALUS_DECODER_SUBSTRATE_AUTO;
|
||||
const char *sub_name = "auto";
|
||||
if (argc > 4) {
|
||||
if (!strcmp(argv[4], "cpu")) { sub = DAEDALUS_DECODER_SUBSTRATE_CPU; sub_name = "cpu"; }
|
||||
else if (!strcmp(argv[4], "qpu")) { sub = DAEDALUS_DECODER_SUBSTRATE_QPU; sub_name = "qpu"; }
|
||||
else if (!strcmp(argv[4], "auto")) { /* default */ }
|
||||
else {
|
||||
fprintf(stderr, "unknown substrate '%s' (want auto/cpu/qpu)\n", argv[4]);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
int mb_w = width / 16;
|
||||
int mb_h = height / 16;
|
||||
int n_mbs = mb_w * mb_h;
|
||||
printf("test_idct_bitexact: %dx%d (%d MBs), seed=0x%lx\n",
|
||||
width, height, n_mbs, (unsigned long) seed);
|
||||
|
||||
daedalus_decoder *dec = daedalus_decoder_create(width, height);
|
||||
if (!dec) {
|
||||
fprintf(stderr, "SKIP: ctx create failed (Vulkan / V3D7 unavailable)\n");
|
||||
return 0;
|
||||
}
|
||||
if (daedalus_decoder_set_substrate(dec, sub) != 0) {
|
||||
fprintf(stderr, "set_substrate(%s) failed\n", sub_name);
|
||||
return 1;
|
||||
}
|
||||
printf("substrate: %s\n", sub_name);
|
||||
|
||||
/* Build the per-MB inputs. Each MB gets 16 luma 4×4 blocks of
|
||||
* random coeffs in [-512, 511] — same range as the daedalus-fourier
|
||||
* cycle-6 M1 gate uses. Plus random predicted samples (uint8 each)
|
||||
* to exercise the Stage 2 predicted-samples plumbing — when this
|
||||
* is non-zero, flush_frame must pre-fill the IDCT-dispatch scratch
|
||||
* from dec->predicted_y / dec->predicted_uv (Stage 2 PR-a) rather
|
||||
* than from calloc-zero (the Stage 1 scaffold contract). The
|
||||
* reference path mirrors this by pre-filling ref_y / ref_cb / ref_cr
|
||||
* from the same predicted bytes BEFORE the per-block ref_idct*_add
|
||||
* calls — so the test catches any mismatch between caller-supplied
|
||||
* predicted and what reaches the GPU's IDCT-add starting state. */
|
||||
int16_t (*per_mb_coeffs)[384] = malloc((size_t) n_mbs * sizeof(*per_mb_coeffs));
|
||||
uint8_t (*per_mb_predicted)[384] = malloc((size_t) n_mbs * sizeof(*per_mb_predicted));
|
||||
if (!per_mb_coeffs || !per_mb_predicted) { fprintf(stderr, "alloc fail\n"); return 1; }
|
||||
|
||||
for (int mb = 0; mb < n_mbs; mb++) {
|
||||
for (int i = 0; i < 384; i++) {
|
||||
/* Random coeffs in [-512, 511] for all of luma + Cb + Cr. */
|
||||
per_mb_coeffs[mb][i] = (int16_t)((int)(xs64() % 1024) - 512);
|
||||
/* Random predicted samples in [0, 255]. */
|
||||
per_mb_predicted[mb][i] = (uint8_t)(xs64() & 0xff);
|
||||
}
|
||||
}
|
||||
|
||||
/* Per-MB transform mode (deterministic split: every odd raster MB
|
||||
* is 8x8, every even is 4x4 — exercises BOTH partitions in the
|
||||
* same frame so the flush_frame partitioning logic is under test). */
|
||||
uint8_t *mb_8x8 = malloc((size_t) n_mbs);
|
||||
if (!mb_8x8) { fprintf(stderr, "alloc fail\n"); return 1; }
|
||||
for (int i = 0; i < n_mbs; i++) mb_8x8[i] = (i & 1) ? 1 : 0;
|
||||
|
||||
/* Append in raster order. */
|
||||
struct daedalus_decoder_mb_input mb = {0};
|
||||
int n_8x8_mbs = 0, n_4x4_mbs = 0;
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int idx = my * mb_w + mx;
|
||||
mb.mb_x = (uint16_t) mx;
|
||||
mb.mb_y = (uint16_t) my;
|
||||
mb.coeffs = per_mb_coeffs[idx];
|
||||
mb.predicted = per_mb_predicted[idx];
|
||||
mb.transform_8x8 = mb_8x8[idx];
|
||||
if (mb_8x8[idx]) n_8x8_mbs++; else n_4x4_mbs++;
|
||||
if (daedalus_decoder_append_mb(dec, &mb) != 0) {
|
||||
fprintf(stderr, "append (%d,%d) failed\n", mx, my);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("MB mix: %d 4x4 MBs, %d 8x8 MBs\n", n_4x4_mbs, n_8x8_mbs);
|
||||
|
||||
/* Flush — exercise BOTH the luma path (out_y) and the chroma path
|
||||
* (out_uv set to non-NULL so flush_frame runs the chroma dispatch
|
||||
* + NV12 interleave). */
|
||||
size_t y_size = (size_t) width * height;
|
||||
size_t uv_size = (size_t) width * height / 2;
|
||||
uint8_t *gpu_y = calloc(1, y_size);
|
||||
uint8_t *gpu_uv = calloc(1, uv_size);
|
||||
if (!gpu_y || !gpu_uv) return 1;
|
||||
int frc = daedalus_decoder_flush_frame(dec, gpu_y, (size_t) width,
|
||||
gpu_uv, (size_t) width);
|
||||
if (frc != 0) {
|
||||
fprintf(stderr, "flush_frame rc=%d\n", frc);
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* Compute the reference output: same per-MB → flat raster block
|
||||
* layout as flush_frame uses. Branch per MB on transform_8x8.
|
||||
*
|
||||
* ref_y is pre-filled with each MB's 16×16 luma predicted samples
|
||||
* at raster (my*16, mx*16), then ref_idct4_add/8_add overlay the
|
||||
* residual via FFmpeg `idct_add` semantics (dst += idct(coeffs);
|
||||
* clip255). This mirrors what flush_frame does on the GPU side:
|
||||
* scratch_y starts from dec->predicted_y, IDCT-add writes back. */
|
||||
uint8_t *ref_y = malloc(y_size);
|
||||
if (!ref_y) return 1;
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int mb_idx = my * mb_w + mx;
|
||||
const uint8_t *p_y = per_mb_predicted[mb_idx]; /* [0..256) */
|
||||
for (int r = 0; r < 16; r++) {
|
||||
memcpy(&ref_y[((size_t) my * 16 + r) * (size_t) width
|
||||
+ (size_t) mx * 16],
|
||||
&p_y[r * 16], 16);
|
||||
}
|
||||
}
|
||||
}
|
||||
int16_t block_scratch[64]; /* large enough for 8x8 */
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int mb_idx = my * mb_w + mx;
|
||||
if (mb_8x8[mb_idx]) {
|
||||
/* 4 luma 8x8 blocks, raster sb_y*2+sb_x. */
|
||||
for (int sb_y = 0; sb_y < 2; sb_y++) {
|
||||
for (int sb_x = 0; sb_x < 2; sb_x++) {
|
||||
int block_in_mb = sb_y * 2 + sb_x;
|
||||
memcpy(block_scratch,
|
||||
&per_mb_coeffs[mb_idx][block_in_mb * 64],
|
||||
64 * sizeof(int16_t));
|
||||
size_t px_y = (size_t) my * 16 + (size_t) sb_y * 8;
|
||||
size_t px_x = (size_t) mx * 16 + (size_t) sb_x * 8;
|
||||
ref_idct8_add(&ref_y[px_y * (size_t) width + px_x],
|
||||
width, block_scratch);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
/* 16 luma 4x4 blocks, raster sb_y*4+sb_x. */
|
||||
for (int sb_y = 0; sb_y < 4; sb_y++) {
|
||||
for (int sb_x = 0; sb_x < 4; sb_x++) {
|
||||
int block_in_mb = sb_y * 4 + sb_x;
|
||||
memcpy(block_scratch,
|
||||
&per_mb_coeffs[mb_idx][block_in_mb * 16],
|
||||
16 * sizeof(int16_t));
|
||||
size_t px_y = (size_t) my * 16 + (size_t) sb_y * 4;
|
||||
size_t px_x = (size_t) mx * 16 + (size_t) sb_x * 4;
|
||||
ref_idct4_add(&ref_y[px_y * (size_t) width + px_x],
|
||||
width, block_scratch);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Build the chroma reference: separate planar Cb and Cr (W/2 by
|
||||
* H/2), each block IDCT'd into its plane. Chroma per-MB layout
|
||||
* matches flush_frame: 4 Cb blocks then 4 Cr blocks, raster order
|
||||
* within each component (sb_y * 2 + sb_x). */
|
||||
size_t chroma_w = (size_t) width / 2;
|
||||
size_t chroma_h = (size_t) height / 2;
|
||||
size_t chroma_plane_size = chroma_w * chroma_h;
|
||||
uint8_t *ref_cb = malloc(chroma_plane_size);
|
||||
uint8_t *ref_cr = malloc(chroma_plane_size);
|
||||
if (!ref_cb || !ref_cr) return 1;
|
||||
/* Pre-fill ref_cb / ref_cr with per-MB 8x8 chroma predicted samples
|
||||
* (mirrors the predicted-samples plumbing on the chroma path). */
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int mb_idx = my * mb_w + mx;
|
||||
const uint8_t *p_cb = per_mb_predicted[mb_idx] + 256;
|
||||
const uint8_t *p_cr = per_mb_predicted[mb_idx] + 256 + 64;
|
||||
for (int r = 0; r < 8; r++) {
|
||||
memcpy(&ref_cb[((size_t) my * 8 + r) * chroma_w + (size_t) mx * 8],
|
||||
&p_cb[r * 8], 8);
|
||||
memcpy(&ref_cr[((size_t) my * 8 + r) * chroma_w + (size_t) mx * 8],
|
||||
&p_cr[r * 8], 8);
|
||||
}
|
||||
}
|
||||
}
|
||||
for (int my = 0; my < mb_h; my++) {
|
||||
for (int mx = 0; mx < mb_w; mx++) {
|
||||
int mb_idx = my * mb_w + mx;
|
||||
for (int comp = 0; comp < 2; comp++) {
|
||||
uint8_t *plane = (comp == 0) ? ref_cb : ref_cr;
|
||||
size_t coeff_base = 256u + (size_t) comp * 64u;
|
||||
for (int sb_y = 0; sb_y < 2; sb_y++) {
|
||||
for (int sb_x = 0; sb_x < 2; sb_x++) {
|
||||
int block_in_comp = sb_y * 2 + sb_x;
|
||||
memcpy(block_scratch,
|
||||
&per_mb_coeffs[mb_idx][coeff_base +
|
||||
(size_t) block_in_comp * 16],
|
||||
16 * sizeof(int16_t));
|
||||
size_t px_y = (size_t) my * 8 + (size_t) sb_y * 4;
|
||||
size_t px_x = (size_t) mx * 8 + (size_t) sb_x * 4;
|
||||
ref_idct4_add(&plane[px_y * chroma_w + px_x],
|
||||
(ptrdiff_t) chroma_w, block_scratch);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Y compare. */
|
||||
size_t y_diffs = 0, y_first_diff = 0;
|
||||
for (size_t i = 0; i < y_size; i++) {
|
||||
if (gpu_y[i] != ref_y[i]) {
|
||||
if (y_diffs == 0) y_first_diff = i;
|
||||
y_diffs++;
|
||||
}
|
||||
}
|
||||
printf("Y bytes total: %zu\n", y_size);
|
||||
printf("Y bytes diff: %zu (%.4f%%)\n", y_diffs, 100.0 * y_diffs / y_size);
|
||||
if (y_diffs) {
|
||||
printf("Y first diff at offset %zu: gpu=%u ref=%u\n",
|
||||
y_first_diff, gpu_y[y_first_diff], ref_y[y_first_diff]);
|
||||
}
|
||||
|
||||
/* UV compare — deinterleave NV12 back into Cb/Cr and compare. */
|
||||
size_t cb_diffs = 0, cr_diffs = 0;
|
||||
size_t cb_first = 0, cr_first = 0;
|
||||
for (size_t r = 0; r < chroma_h; r++) {
|
||||
const uint8_t *gpu_row = gpu_uv + r * (size_t) width;
|
||||
const uint8_t *cb_row = ref_cb + r * chroma_w;
|
||||
const uint8_t *cr_row = ref_cr + r * chroma_w;
|
||||
for (size_t c = 0; c < chroma_w; c++) {
|
||||
uint8_t gpu_cb = gpu_row[c * 2 + 0];
|
||||
uint8_t gpu_cr = gpu_row[c * 2 + 1];
|
||||
if (gpu_cb != cb_row[c]) {
|
||||
if (cb_diffs == 0) cb_first = r * chroma_w + c;
|
||||
cb_diffs++;
|
||||
}
|
||||
if (gpu_cr != cr_row[c]) {
|
||||
if (cr_diffs == 0) cr_first = r * chroma_w + c;
|
||||
cr_diffs++;
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("Cb bytes total: %zu diff: %zu (%.4f%%)\n",
|
||||
chroma_plane_size, cb_diffs,
|
||||
100.0 * cb_diffs / chroma_plane_size);
|
||||
printf("Cr bytes total: %zu diff: %zu (%.4f%%)\n",
|
||||
chroma_plane_size, cr_diffs,
|
||||
100.0 * cr_diffs / chroma_plane_size);
|
||||
if (cb_diffs) {
|
||||
size_t r = cb_first / chroma_w, c = cb_first % chroma_w;
|
||||
printf("Cb first diff at (%zu,%zu): gpu=%u ref=%u\n",
|
||||
r, c, gpu_uv[r * (size_t) width + c * 2 + 0], ref_cb[cb_first]);
|
||||
}
|
||||
if (cr_diffs) {
|
||||
size_t r = cr_first / chroma_w, c = cr_first % chroma_w;
|
||||
printf("Cr first diff at (%zu,%zu): gpu=%u ref=%u\n",
|
||||
r, c, gpu_uv[r * (size_t) width + c * 2 + 1], ref_cr[cr_first]);
|
||||
}
|
||||
|
||||
free(ref_cr);
|
||||
free(ref_cb);
|
||||
free(ref_y);
|
||||
free(gpu_uv);
|
||||
free(gpu_y);
|
||||
free(mb_8x8);
|
||||
free(per_mb_predicted);
|
||||
free(per_mb_coeffs);
|
||||
daedalus_decoder_destroy(dec);
|
||||
|
||||
if (y_diffs == 0 && cb_diffs == 0 && cr_diffs == 0) {
|
||||
printf("BIT-EXACT PASS (Y + Cb + Cr)\n");
|
||||
return 0;
|
||||
}
|
||||
fprintf(stderr, "BIT-EXACT FAIL\n");
|
||||
return 1;
|
||||
}
|
||||
@@ -1,175 +0,0 @@
|
||||
/* SPDX-License-Identifier: BSD-2-Clause */
|
||||
/*
|
||||
* Scaffold smoke test — verifies the daedalus-decoder library links
|
||||
* cleanly against daedalus-fourier and the lifecycle entry points
|
||||
* don't immediately crash. No actual decoding work yet.
|
||||
*
|
||||
* Returns 0 on success, non-zero on any unexpected behaviour.
|
||||
*/
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "daedalus_decoder.h"
|
||||
|
||||
#define EXPECT(cond, msg) do { \
|
||||
if (!(cond)) { \
|
||||
fprintf(stderr, "EXPECT FAIL %s:%d: %s\n", __FILE__, __LINE__, msg); \
|
||||
return 1; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
int main(void)
|
||||
{
|
||||
printf("daedalus-decoder version: %s\n", daedalus_decoder_version());
|
||||
|
||||
/* Create / destroy null is a no-op. */
|
||||
daedalus_decoder_destroy(NULL);
|
||||
|
||||
/* Bad dimensions rejected. */
|
||||
EXPECT(daedalus_decoder_create(0, 0 ) == NULL, "zero dims must reject");
|
||||
EXPECT(daedalus_decoder_create(1919, 1088) == NULL, "non-16-multiple width must reject");
|
||||
EXPECT(daedalus_decoder_create(1920, 1079) == NULL, "non-16-multiple height must reject");
|
||||
|
||||
/* Valid 1088p create. */
|
||||
daedalus_decoder *dec = daedalus_decoder_create(1920, 1088);
|
||||
if (!dec) {
|
||||
/* Vulkan init failure on this host — degrades to skip, not fail.
|
||||
* (CI runners without V3D7 will hit this; the smoke test
|
||||
* shouldn't gate on hardware presence.) */
|
||||
fprintf(stderr, "SKIP: daedalus_decoder_create returned NULL "
|
||||
"(Vulkan / V3D7 unavailable on this host)\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
printf("ctx created: 1920x1088, has_qpu=%d\n",
|
||||
daedalus_decoder_has_qpu(dec));
|
||||
|
||||
/* set_output_format mid-frame on virgin ctx is allowed
|
||||
* (mbs_appended == 0). */
|
||||
EXPECT(daedalus_decoder_set_output_format(dec, DAEDALUS_DECODER_OUTPUT_RGBA) == 0,
|
||||
"switch to RGBA on virgin ctx");
|
||||
EXPECT(daedalus_decoder_set_output_format(dec, DAEDALUS_DECODER_OUTPUT_NV12) == 0,
|
||||
"switch back to NV12");
|
||||
|
||||
/* Substrate setter — same lifecycle rules. */
|
||||
EXPECT(daedalus_decoder_set_substrate(dec, DAEDALUS_DECODER_SUBSTRATE_CPU) == 0,
|
||||
"force CPU substrate on virgin ctx");
|
||||
EXPECT(daedalus_decoder_set_substrate(dec, DAEDALUS_DECODER_SUBSTRATE_QPU) == 0,
|
||||
"force QPU substrate on virgin ctx");
|
||||
EXPECT(daedalus_decoder_set_substrate(dec, DAEDALUS_DECODER_SUBSTRATE_AUTO) == 0,
|
||||
"back to AUTO");
|
||||
EXPECT(daedalus_decoder_set_substrate(dec, (daedalus_decoder_substrate) 99) == -1,
|
||||
"bogus substrate rejects");
|
||||
|
||||
/* Append rejects out-of-bounds + null inputs. */
|
||||
int16_t coeffs[384] = {0};
|
||||
struct daedalus_decoder_mb_input mb = {0};
|
||||
mb.coeffs = coeffs;
|
||||
|
||||
mb.mb_x = 0; mb.mb_y = 0;
|
||||
EXPECT(daedalus_decoder_append_mb(dec, NULL) == -1, "null mb rejects");
|
||||
{
|
||||
struct daedalus_decoder_mb_input mb2 = mb;
|
||||
mb2.coeffs = NULL;
|
||||
EXPECT(daedalus_decoder_append_mb(dec, &mb2) == -1, "null coeffs rejects");
|
||||
}
|
||||
{
|
||||
struct daedalus_decoder_mb_input mb2 = mb;
|
||||
mb2.mb_x = 9999; mb2.mb_y = 9999;
|
||||
EXPECT(daedalus_decoder_append_mb(dec, &mb2) == -1, "OOB coords reject");
|
||||
}
|
||||
|
||||
/* Append first MB at raster index 0 — should succeed. */
|
||||
EXPECT(daedalus_decoder_append_mb(dec, &mb) == 0, "append (0,0)");
|
||||
|
||||
/* Skipping (0,1) and appending (1,0) violates raster order — reject. */
|
||||
{
|
||||
struct daedalus_decoder_mb_input mb2 = mb;
|
||||
mb2.mb_x = 0; mb2.mb_y = 1;
|
||||
EXPECT(daedalus_decoder_append_mb(dec, &mb2) == -1,
|
||||
"out-of-raster-order rejects");
|
||||
}
|
||||
|
||||
/* In-order: (1,0). */
|
||||
mb.mb_x = 1; mb.mb_y = 0;
|
||||
EXPECT(daedalus_decoder_append_mb(dec, &mb) == 0, "append (1,0)");
|
||||
|
||||
/* Flush an incomplete frame: should fail because mbs_appended != n_mbs. */
|
||||
EXPECT(daedalus_decoder_flush_frame(dec, NULL, 0, NULL, 0) == -1,
|
||||
"incomplete-frame flush rejects");
|
||||
|
||||
/* set_output_format mid-frame (mbs_appended > 0) must reject. */
|
||||
EXPECT(daedalus_decoder_set_output_format(dec, DAEDALUS_DECODER_OUTPUT_RGBA) == -1,
|
||||
"mid-frame format change rejects");
|
||||
|
||||
daedalus_decoder_destroy(dec);
|
||||
|
||||
/* ---- Full-frame round-trip with all-zero coefficients.
|
||||
* Phase 1 stage 1 validation: flush_frame builds the per-frame IDCT
|
||||
* dispatch and a successful GPU round-trip returns 0. IDCT of
|
||||
* all-zero coefficients with zero-initialised predicted = all-zero
|
||||
* output pixels. */
|
||||
dec = daedalus_decoder_create(1920, 1088);
|
||||
if (!dec) {
|
||||
fprintf(stderr, "SKIP roundtrip: ctx create failed\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int16_t zero_coeffs[384] = {0};
|
||||
struct daedalus_decoder_mb_input zmb = {0};
|
||||
zmb.coeffs = zero_coeffs;
|
||||
|
||||
int mb_width = 1920 / 16; /* 120 */
|
||||
int mb_height = 1088 / 16; /* 68 */
|
||||
int n_mbs = mb_width * mb_height;
|
||||
|
||||
for (int mby = 0; mby < mb_height; mby++) {
|
||||
for (int mbx = 0; mbx < mb_width; mbx++) {
|
||||
zmb.mb_x = (uint16_t) mbx;
|
||||
zmb.mb_y = (uint16_t) mby;
|
||||
if (daedalus_decoder_append_mb(dec, &zmb) != 0) {
|
||||
fprintf(stderr, "append (%d, %d) failed\n", mbx, mby);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("appended %d MBs (%dx%d)\n", n_mbs, mb_width, mb_height);
|
||||
|
||||
size_t y_size = (size_t) 1920 * 1088;
|
||||
size_t uv_size = (size_t) 1920 * 1088 / 2;
|
||||
uint8_t *out_y = malloc(y_size);
|
||||
uint8_t *out_uv = malloc(uv_size);
|
||||
/* Pre-fill with sentinel so any read-then-write bug becomes visible. */
|
||||
memset(out_y, 0xab, y_size);
|
||||
memset(out_uv, 0xcd, uv_size);
|
||||
|
||||
int frc = daedalus_decoder_flush_frame(dec, out_y, 1920, out_uv, 1920);
|
||||
printf("flush_frame rc=%d\n", frc);
|
||||
EXPECT(frc == 0, "flush succeeds on full frame");
|
||||
|
||||
/* Y plane should be all zero (clip255(IDCT(zeros)) = 0). */
|
||||
int y_nz = 0;
|
||||
for (size_t i = 0; i < y_size; i++)
|
||||
if (out_y[i] != 0) y_nz++;
|
||||
printf("Y non-zero bytes: %d / %zu\n", y_nz, y_size);
|
||||
EXPECT(y_nz == 0, "Y plane all zero for zero-coeff frame");
|
||||
|
||||
/* UV plane should be all zero now (real chroma IDCT runs with
|
||||
* zero coeffs → zero residual → clip255(0+0) = 0). Previously a
|
||||
* 128 placeholder when chroma was a memset stub; this PR replaced
|
||||
* that with the real dispatch. Sentinel 0xcd above guarantees we
|
||||
* are observing post-dispatch writes, not the leftover memset. */
|
||||
int uv_nz = 0;
|
||||
for (size_t i = 0; i < uv_size; i++)
|
||||
if (out_uv[i] != 0) uv_nz++;
|
||||
printf("UV non-zero bytes: %d / %zu\n", uv_nz, uv_size);
|
||||
EXPECT(uv_nz == 0, "UV plane all zero for zero-coeff frame");
|
||||
|
||||
free(out_y);
|
||||
free(out_uv);
|
||||
daedalus_decoder_destroy(dec);
|
||||
|
||||
printf("smoke OK\n");
|
||||
return 0;
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
Reference in New Issue
Block a user