60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
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#include "livetranscriber.h"
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#include "iasr.h"
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namespace lc {
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LiveTranscriber::LiveTranscriber(IAsr & asr, QObject * parent)
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: QObject(parent), asr_(asr)
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{
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}
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LiveTranscriber::~LiveTranscriber()
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{
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stop();
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}
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QString LiveTranscriber::deviceName() const
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{
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return pipeline_ ? QString::fromStdString(pipeline_->deviceName()) : QString();
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}
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bool LiveTranscriber::start(const StreamOptions & opts, QString * error)
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{
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stop();
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LivePipelineOptions popt;
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popt.stream = opts;
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pipeline_ = std::make_unique<LivePipeline>(asr_, popt);
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// 回调在工作线程上被调用；连到主线程的接收者时 Qt 会自动排队投递。
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pipeline_->setCaptionCallback([this](const std::string & committed,
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const std::string & tail,
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const std::string & language) {
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Q_EMIT caption(QString::fromStdString(committed),
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QString::fromStdString(tail),
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QString::fromStdString(language));
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});
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pipeline_->setErrorCallback([this](const std::string & message) {
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Q_EMIT failed(QString::fromStdString(message));
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});
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std::string err;
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if (!pipeline_->start(&err)) {
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if (error) *error = QString::fromStdString(err);
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pipeline_.reset();
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return false;
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}
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return true;
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}
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void LiveTranscriber::stop()
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{
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if (pipeline_) {
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pipeline_->stop();
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pipeline_.reset();
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}
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}
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} // namespace lc
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