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fix: request keyframe when video frames arrive without codec config (HEVC) - #29
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Fixes #27
问题
无线 CarPlay 使用 HEVC 编码时,流有时会跳过 codec config 直接发画面帧。此时
VideoDecoder.feed()中lastConfig为 null,后续每一帧都被静默丢弃,表现为无限丢帧、一直无画面。修复
检测到"有画面帧但还没有 codec config"时,不再静默丢帧,而是复用现有的
needsKeyFrame机制主动向手机请求一个关键帧,同时打一条一次性日志方便定位;configureDecoder()成功后awaitingConfigLogged自动复位,不影响正常流程。改动约 15 行,只动
VideoDecoder.feed()。环境
iPhone 17 Pro 无线 CarPlay,车机端为比亚迪 DiLink 4.0。