feat: FFmpeg n8.1.2 as C++ modules — full-feature source build via mcpp (v0.0.1)#1
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- vendor FFmpeg n8.1.2 (third_party/ffmpeg, LGPL-2.1+ hermetic profile) - gen/linux-x86_64 configure snapshot + gen/public consumer-visible avconfig.h - mcpp builds all 2281 sources (2124 .c + 157 NASM .asm) directly, ~21s cold - module layer: import ffmpeg.av (+ 7 per-lib modules), C API names unchanged; generated export surface (978 fn / 194 struct / 76 enum / 1450 enumerators) - include/ffmpeg-m/macros.h side header (include BEFORE import) + C++ replacements for C-only compound-literal macros (av_err2string family) - tools/: gen_config.sh (configure→snapshot), gen_sources.py (make -n → source list, dual-mode pending mcpp#229), gen_exports.py (headers→exports) - tests: API surface + self-contained MJPEG/Matroska encode→decode roundtrip - examples: probe, decode_frames; template: decode (imgui-m style) - CI: linux required (build+test+examples), macOS snapshot machinery (experimental, artifact for future gen/macos-aarch64); release workflow (tag → verify → GitHub Release) Refs: mcpp-community/mcpp#226 #227 #228 #229
…w the thin module layer - drop third_party/ffmpeg (112MB vendor) and gen/ snapshots: sources, config snapshot, and the full build recipe now live in the compat.ffmpeg index package (mcpp-index#74, official tarball + CN mirror, sha256-pinned) - mcpp.toml: module layer only + compat.ffmpeg = "8.1.2" dependency - tools: fetch_upstream.sh (pinned official tarball) + gen_config.sh now emits the index descriptor directly (gen_descriptor.py); gen_sources.py removed - CI: temporary index bridge until mcpp-index#74 publishes; macOS job reduced to packaging-machinery smoke (configure + source derivation) - verified: build + test (2 passed) + both examples against the local index (157 .asm.o, 3260 SIMD symbols)
…line to mcpp-index compat.ffmpeg 8.1.2 is published (mcpp-index#74 merged, artifact live), so: - ci: remove the temporary compat-index bridge step - ci: drop the macOS packaging-snapshot job (packaging machinery follows the descriptor to mcpp-index tools/compat-ffmpeg/) - tools: keep only fetch_upstream.sh + gen_exports.py (export-surface regen); gen_config.sh / gen_descriptor.py move to mcpp-index - delete stray tracked third_party fate refs from the vendored era
…peg, LGPL-2.1-or-later)
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概要
ffmpeg-m v0.0.1:FFmpeg 8.1.2 的纯 C++23 模块层。C API 原名原样、用法零迁移,只是不再需要头文件:
FFmpeg 源码不 vendor:经
compat.ffmpegindex 包到达消费者(官方 tarball + CN 镜像,sha256 钉死,全源码直编 2281 TU 含 157 NASM.asm,冷构建 ≈ 21s/32 核,构建期零 configure/make/CMake)。内容
ffmpeg.av伞模块 + 7 库模块(依赖export import镜像库拓扑)+ lib-rootffmpeg;生成的导出面 978 函数 / 194 结构体 / 76 枚举 / 1450 枚举常量include/ffmpeg-m/macros.h伴随头(须在 import 之前 include);C-only 复合字面量宏给出 C++ 等价物(av_err2string族)fetch_upstream.sh(官方 tarball 钉版下载)+gen_exports.py(头文件 → 导出面;升级 FFmpeg = 重跑 + review diff)。compat 描述符流水线(gen_config/gen_descriptor)随描述符迁往 mcpp-indextools/compat-ffmpeg/CI
compat.ffmpeg(无桥接),build + test + 双 examplev*→ 复验 build+test → 校验 tag 与包版本一致 → GitHub Release(自动 notes)关联 mcpp issue(本项目产出)
-iquote相对路径不重写)[[build.flags]]数组表)mcpp index update规避)验证(本地,mcpp 0.0.95 / gcc 16.1.0)
compat.ffmpeg→ 下载官方 tarball → 全源码直编 → 运行 ✓mcpp build✓mcpp test✓(2 passed)examples/probe✓(358 demuxers,h264/hevc/av1/vp9/aac/opus/flac 全 ok)examples/decode_frames✓设计与实现记录:
.agents/docs/2026-07-18-ffmpeg-m-{research-and-plan,implementation}.md(含拆分与精简 addendum)