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whisper.wasm : fix unknown language issue (#3000)

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* whisper.wasm : fix unknown language issue

This commit addresses an issue with whisper.wasm where the following
error was being displayed when running the application in github pages:
```
whisper_lang_id: unknown language 'д=␙c'
```

This turned out to be a memory corruption issue and further details
can be found in the reference issue below.

Refs: https://github.com/ggerganov/whisper.cpp/issues/2998
This commit is contained in:
Daniel Bevenius 2025-04-03 19:50:47 +02:00 committed by GitHub
parent eac1bc9c47
commit 77e0c86ab6
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1 changed files with 6 additions and 2 deletions
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examples/whisper.wasm/emscripten.cpp
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@ -65,13 +65,14 @@ EMSCRIPTEN_BINDINGS(whisper) {
}
struct whisper_full_params params = whisper_full_default_params(whisper_sampling_strategy::WHISPER_SAMPLING_GREEDY);
bool is_multilingual = whisper_is_multilingual(g_contexts[index]);
params.print_realtime = true;
params.print_progress = false;
params.print_timestamps = true;
params.print_special = false;
params.translate = translate;
params.language = whisper_is_multilingual(g_contexts[index]) ? lang.c_str() : "en";
params.language = is_multilingual ? strdup(lang.c_str()) : "en";
params.n_threads = std::min(nthreads, std::min(16, mpow2(std::thread::hardware_concurrency())));
params.offset_ms = 0;
@ -102,10 +103,13 @@ EMSCRIPTEN_BINDINGS(whisper) {
// run the worker
{
g_worker = std::thread([index, params, pcmf32 = std::move(pcmf32)]() {
g_worker = std::thread([index, params, pcmf32 = std::move(pcmf32), is_multilingual]() {
whisper_reset_timings(g_contexts[index]);
whisper_full(g_contexts[index], params, pcmf32.data(), pcmf32.size());
whisper_print_timings(g_contexts[index]);
if (is_multilingual) {
free((void*)params.language);
}
});
}