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81 lines
2.6 KiB
81 lines
2.6 KiB
#include "whisper.h"
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#include <emscripten.h>
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#include <emscripten/bind.h>
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#include <vector>
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#include <thread>
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std::vector<struct whisper_context *> g_contexts(4, nullptr);
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EMSCRIPTEN_BINDINGS(whisper) {
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emscripten::function("init", emscripten::optional_override([](const std::string & path_model) {
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for (size_t i = 0; i < g_contexts.size(); ++i) {
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if (g_contexts[i] == nullptr) {
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g_contexts[i] = whisper_init(path_model.c_str());
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if (g_contexts[i] != nullptr) {
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return i + 1;
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} else {
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return (size_t) 0;
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}
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}
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}
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return (size_t) 0;
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}));
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emscripten::function("free", emscripten::optional_override([](size_t index) {
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--index;
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if (index < g_contexts.size()) {
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whisper_free(g_contexts[index]);
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g_contexts[index] = nullptr;
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}
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}));
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emscripten::function("full_default", emscripten::optional_override([](size_t index, const emscripten::val & audio, const std::string & lang, bool translate) {
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--index;
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if (index >= g_contexts.size()) {
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return -1;
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}
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if (g_contexts[index] == nullptr) {
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return -2;
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}
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struct whisper_full_params params = whisper_full_default_params(whisper_sampling_strategy::WHISPER_SAMPLING_GREEDY);
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printf("full_default: available threads %d\n", std::thread::hardware_concurrency());
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params.print_realtime = true;
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params.print_progress = false;
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params.print_timestamps = true;
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params.print_special_tokens = false;
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params.translate = translate;
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params.language = whisper_is_multilingual(g_contexts[index]) ? lang.c_str() : "en";
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params.n_threads = std::min(8, (int) std::thread::hardware_concurrency());
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params.offset_ms = 0;
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printf("full_default: using %d threads\n", params.n_threads);
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printf("full_default: language '%s'\n", params.language);
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std::vector<float> pcmf32;
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const int n = audio["length"].as<int>();
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emscripten::val heap = emscripten::val::module_property("HEAPU8");
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emscripten::val memory = heap["buffer"];
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pcmf32.resize(n);
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emscripten::val memoryView = audio["constructor"].new_(memory, reinterpret_cast<uintptr_t>(pcmf32.data()), n);
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memoryView.call<void>("set", audio);
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int ret = whisper_full(g_contexts[index], params, pcmf32.data(), pcmf32.size());
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whisper_print_timings(g_contexts[index]);
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return ret;
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}));
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}
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