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Add timestamps for streaming ASR. (#123)

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This commit is contained in:
Fangjun Kuang
2023-04-19 16:02:37 +08:00
committed by GitHub
parent 4b5d2887cb
commit ad05f52666
11 changed files with 170 additions and 19 deletions
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13
sherpa-onnx/csrc/online-transducer-greedy-search-decoder.cc
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@@ -102,16 +102,18 @@ void OnlineTransducerGreedySearchDecoder::Decode(
bool emitted = false;
for (int32_t i = 0; i < batch_size; ++i, p_logit += vocab_size) {
auto &r = (*result)[i];
auto y = static_cast<int32_t>(std::distance(
static_cast<const float *>(p_logit),
std::max_element(static_cast<const float *>(p_logit),
static_cast<const float *>(p_logit) + vocab_size)));
if (y != 0) {
emitted = true;
(*result)[i].tokens.push_back(y);
(*result)[i].num_trailing_blanks = 0;
r.tokens.push_back(y);
r.timestamps.push_back(t + r.frame_offset);
r.num_trailing_blanks = 0;
} else {
++(*result)[i].num_trailing_blanks;
++r.num_trailing_blanks;
}
}
if (emitted) {
@@ -121,6 +123,11 @@ void OnlineTransducerGreedySearchDecoder::Decode(
}
UpdateCachedDecoderOut(model_->Allocator(), &decoder_out, result);
// Update frame_offset
for (auto &r : *result) {
r.frame_offset += num_frames;
}
}
} // namespace sherpa_onnx