43 lines
1.9 KiB
Markdown
43 lines
1.9 KiB
Markdown
# Phase 4 状态
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## 结论
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**Phase 4 CODE COMPLETE / GPU INTEROP BLOCKED / DEVICE VALIDATION PENDING**
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代码完成了 MPV 识别 FFmpeg OHCodec、H.264/HEVC decoder selection、能力检查、
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direct-surface 实验接入、软件回退、诊断和构建矩阵。当前没有实体设备，因此
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不能写成 hardware decode complete、zero-copy complete 或 HDR complete。
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## 验证矩阵
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| 项目 | 状态 |
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| --- | --- |
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| `AV_PIX_FMT_OHCODEC` → `IMGFMT_OHCODEC` | COMPILE VERIFIED |
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| `AV_HWDEVICE_TYPE_OHCODEC` 独立 backend | COMPILE VERIFIED |
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| H.264 / HEVC selection guard | COMPILE VERIFIED；DEVICE TEST REQUIRED |
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| API24 OHCodec capability 查询 | COMPILE VERIFIED；设备返回值待验 |
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| Direct Surface plumbing | COMPILE VERIFIED；需独占窗口 |
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| GPU interop mapper | BLOCKED：上游无可导入 non-surface output contract |
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| Software decode / OHAudio | CLEAN BUILD VERIFIED |
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| OHCodec-enabled / software / GL-probe | AArch64 BUILD VERIFIED |
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| Playback Lab HAP | BUILD VERIFIED；unsigned |
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| Emulator | APP START + EGL SMOKE VERIFIED；不是硬解验证 |
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| Physical device | PENDING |
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## 产物与审计
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- `build/ohos-arm64/prefix/lib/libmpv.so.2.5.0` 为 AArch64 ELF，保留 OHCodec、
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OHAudio 及诊断符号。
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- `scripts/build-mpv-ohos-software.sh` 使用独立 build 目录关闭 OHCodec，避免
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软件回退配置与硬解构建互相污染。
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- FFmpeg 保持锁定 upstream commit，未复制 SDK/第三方实现；许可证审计见
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`LICENSE_AUDIT.md`。
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- 当前 blocker、NativeBuffer 生命周期、EGL/fence/crop/stride 待验证项见
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`DOCS/OHCODEC_GPU_INTEROP_DESIGN.md` 与 `DOCS/HDR_PIPELINE_NOTES.md`。
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## 下一阶段最大风险
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实体设备上的 codec capability、surface recreate、output buffer ownership、
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acquire/release fence、crop/stride/color metadata，以及如何在不修改 FFmpeg
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surface contract 的前提下把硬件帧交给 MPV GPU composition。
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