e814cb64e7
根因（实测确认，非推测） 上游 nvenc 0.1.0 的 encode_picture 只设置 picture_type=NV_ENC_PIC_TYPE_IDR， 却从未设置 encode_pic_flags=NV_ENC_PIC_FLAG_FORCEIDR。NVENC 会据此忽略请求、 继续输出 P 帧。首帧之所以「看起来正常」，是因为 frame_idx==0 本来就强制 IDR， 与该字段无关——这也是该缺陷长期未被发现的原因。 证据（同一 frame_count=4，修复前后） - 修复前：输出 NAL 首字节 0x61 → 0x61 & 0x1F = 1 = 普通 P 片 - 修复后：输出 NAL 首字节 0x65 → 0x65 & 0x1F = 5 = IDR 片 影响 这解释了构建运行手册 §6.1 记录的「静止桌面黑屏」：NVENC 路径的重编 IDR 从未 真正生效，KeyFrameReq 拿不到 IDR 就无法从解码错误中恢复。 改动 - 新增 vendor/nvenc（上游为 MIT 许可，可自由修改分发，符合商用要求） - vendor/nvenc/src/safe/encoder.rs：picture_type=IDR 时置 ForceIDR； IntraRefresh 时置 ForceIntra。改动处有「本项目补丁」注释标记 - agent/Cargo.toml：nvenc 改为 path 依赖指向 vendor 版本 建议后续向上游提 PR（github.com/AlsoSylv/nvenc），以降低长期维护成本。 验证：跳帧后发 KeyFrameReq，第 3 帧即收到 IDR 并解码成功
64 lines
1.5 KiB
TOML
64 lines
1.5 KiB
TOML
# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
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#
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# When uploading crates to the registry Cargo will automatically
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# "normalize" Cargo.toml files for maximal compatibility
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# with all versions of Cargo and also rewrite `path` dependencies
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# to registry (e.g., crates.io) dependencies.
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#
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# If you are reading this file be aware that the original Cargo.toml
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# will likely look very different (and much more reasonable).
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# See Cargo.toml.orig for the original contents.
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[package]
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edition = "2024"
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rust-version = "1.85.1"
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name = "nvenc"
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version = "0.1.0"
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authors = ["AlsoSylv"]
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build = false
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autolib = false
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autobins = false
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autoexamples = false
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autotests = false
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autobenches = false
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description = "Wrapper for the nvidia NVENC API"
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readme = "README.md"
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keywords = [
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"nvidia",
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"graphics",
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"media",
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"video",
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"ffi",
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]
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categories = [
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"multimedia",
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"external-ffi-bindings",
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]
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license = "MIT"
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repository = "https://github.com/AlsoSylv/nvenc"
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[lib]
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name = "nvenc"
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path = "src/lib.rs"
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# 上游 README 的示例是已过时的 Linux GLX 用法（Session<NeedsConfig> 等类型已不存在），
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# 直接跑 doctest 会失败。本项目只做 vendor 补丁、不维护文档示例，故关闭。
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doctest = false
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[[example]]
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name = "simple_encode"
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path = "examples/simple_encode.rs"
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[dependencies.bitfields]
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version = "1.0.2"
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[dependencies.libloading]
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version = "0.8.9"
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[target."cfg(windows)".dependencies.windows]
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version = "0.62"
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features = [
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"Win32_Graphics_Dxgi_Common",
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"Win32_Graphics_Direct3D",
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"Win32_Graphics_Direct3D11",
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]
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