fix(asr): do not call InputFinished for a never-ending stream
A live caption stream never ends: the boundary of an utterance is silence, not end-of-input, so InputFinished (which means "no more audio ever") does not apply. Drop it and rely on the trailing audio alone; keep a short silence padding as a safety net for end-of-file cases. Verified that the file path still emits the final character without InputFinished. 实时字幕的音频流永不结束,一句话的边界是"静音"而不是"输入结束",所以 不该调用语义为"再也不会有音频"的 InputFinished。改为只补一小段静音兜底, 实测文件模式的结果依然完整。文档也一并更正。
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@@ -67,7 +67,11 @@ IAsr(src/core/iasr.h)
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1. **sherpa-onnx 的预编译库是旧 C++ ABI**(`_GLIBCXX_USE_CXX11_ABI=0`),和 Qt 的新 ABI 冲突,
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C++ API 链接不上。**必须用它的 C API**(`sherpa-onnx/c-api/c-api.h`,`extern "C"`,无名字改写)。
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2. **结束时要补一小段静音**(`streamFinish()` 里补 0.3s)再 `InputFinished`,否则最后一个字会被截掉。
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2. **末尾要补一小段静音**(`streamFinish()` 里补 0.3s),否则最后一个字会被截掉。
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但**不需要 `InputFinished`**:实时字幕的音频流永不结束,一句话的边界是「静音」而不是「输入结束」,
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`InputFinished` 的语义只对文件成立。实测只补静音(不调 `InputFinished`)结果就是完整的。
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真实场景里那段尾部静音本来就会被喂进去(VAD 判定静音要 0.8s,这 0.8s 已经送给模型了),
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所以补静音只是个兜底。
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## 自动语言识别
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