本文整理汇总了C++中TimeRange::getEnd方法的典型用法代码示例。如果您正苦于以下问题:C++ TimeRange::getEnd方法的具体用法?C++ TimeRange::getEnd怎么用?C++ TimeRange::getEnd使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TimeRange
的用法示例。
在下文中一共展示了TimeRange::getEnd方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: progressMerger
JoiningBoundedTimeline<void> webRtcDetectVoiceActivity(const AudioClip& audioClip, ProgressSink& progressSink) {
VadInst* vadHandle = WebRtcVad_Create();
if (!vadHandle) throw runtime_error("Error creating WebRTC VAD handle.");
auto freeHandle = gsl::finally([&]() {
WebRtcVad_Free(vadHandle);
});
int error = WebRtcVad_Init(vadHandle);
if (error) throw runtime_error("Error initializing WebRTC VAD handle.");
const int aggressiveness = 2; // 0..3. The higher, the more is cut off.
error = WebRtcVad_set_mode(vadHandle, aggressiveness);
if (error) throw runtime_error("Error setting WebRTC VAD aggressiveness.");
ProgressMerger progressMerger(progressSink);
ProgressSink& pass1ProgressSink = progressMerger.addSink(1.0);
ProgressSink& pass2ProgressSink = progressMerger.addSink(0.3);
// Detect activity
JoiningBoundedTimeline<void> activity(audioClip.getTruncatedRange());
centiseconds time = 0_cs;
const size_t bufferCapacity = audioClip.getSampleRate() / 100;
auto processBuffer = [&](const vector<int16_t>& buffer) {
// WebRTC is picky regarding buffer size
if (buffer.size() < bufferCapacity) return;
int result = WebRtcVad_Process(vadHandle, audioClip.getSampleRate(), buffer.data(), buffer.size()) == 1;
if (result == -1) throw runtime_error("Error processing audio buffer using WebRTC VAD.");
bool isActive = result != 0;
if (isActive) {
activity.set(time, time + 1_cs);
}
time += 1_cs;
};
process16bitAudioClip(audioClip, processBuffer, bufferCapacity, pass1ProgressSink);
// WebRTC adapts to the audio. This means results may not be correct at the very beginning.
// It sometimes returns false activity at the very beginning, mistaking the background noise for speech.
// So we delete the first recognized utterance and re-process the corresponding audio segment.
if (!activity.empty()) {
TimeRange firstActivity = activity.begin()->getTimeRange();
activity.clear(firstActivity);
unique_ptr<AudioClip> streamStart = audioClip.clone() | segment(TimeRange(0_cs, firstActivity.getEnd()));
time = 0_cs;
process16bitAudioClip(*streamStart, processBuffer, bufferCapacity, pass2ProgressSink);
}
return activity;
}