WebAssembly exmaple for speaker diarization (#1411)

wasm/speaker-diarization/sherpa-onnx-wasm-main-speaker-diarization.cc

@@ -0,0 +1,63 @@
+// wasm/sherpa-onnx-wasm-main-speaker-diarization.cc
+//
+// Copyright (c)  2024  Xiaomi Corporation
+#include <stdio.h>
+
+#include <algorithm>
+#include <memory>
+
+#include "sherpa-onnx/c-api/c-api.h"
+
+// see also
+// https://emscripten.org/docs/porting/connecting_cpp_and_javascript/Interacting-with-code.html
+
+extern "C" {
+
+static_assert(sizeof(SherpaOnnxOfflineSpeakerSegmentationPyannoteModelConfig) ==
+                  1 * 4,
+              "");
+
+static_assert(
+    sizeof(SherpaOnnxOfflineSpeakerSegmentationModelConfig) ==
+        sizeof(SherpaOnnxOfflineSpeakerSegmentationPyannoteModelConfig) + 3 * 4,
+    "");
+
+static_assert(sizeof(SherpaOnnxFastClusteringConfig) == 2 * 4, "");
+
+static_assert(sizeof(SherpaOnnxSpeakerEmbeddingExtractorConfig) == 4 * 4, "");
+
+static_assert(sizeof(SherpaOnnxOfflineSpeakerDiarizationConfig) ==
+                  sizeof(SherpaOnnxOfflineSpeakerSegmentationModelConfig) +
+                      sizeof(SherpaOnnxSpeakerEmbeddingExtractorConfig) +
+                      sizeof(SherpaOnnxFastClusteringConfig) + 2 * 4,
+              "");
+
+void MyPrint(const SherpaOnnxOfflineSpeakerDiarizationConfig *sd_config) {
+  const auto &segmentation = sd_config->segmentation;
+  const auto &embedding = sd_config->embedding;
+  const auto &clustering = sd_config->clustering;
+
+  fprintf(stdout, "----------segmentation config----------\n");
+  fprintf(stdout, "pyannote model: %s\n", segmentation.pyannote.model);
+  fprintf(stdout, "num threads: %d\n", segmentation.num_threads);
+  fprintf(stdout, "debug: %d\n", segmentation.debug);
+  fprintf(stdout, "provider: %s\n", segmentation.provider);
+
+  fprintf(stdout, "----------embedding config----------\n");
+  fprintf(stdout, "model: %s\n", embedding.model);
+  fprintf(stdout, "num threads: %d\n", embedding.num_threads);
+  fprintf(stdout, "debug: %d\n", embedding.debug);
+  fprintf(stdout, "provider: %s\n", embedding.provider);
+
+  fprintf(stdout, "----------clustering config----------\n");
+  fprintf(stdout, "num_clusters: %d\n", clustering.num_clusters);
+  fprintf(stdout, "threshold: %.3f\n", clustering.threshold);
+
+  fprintf(stdout, "min_duration_on: %.3f\n", sd_config->min_duration_on);
+  fprintf(stdout, "min_duration_off: %.3f\n", sd_config->min_duration_off);
+}
+
+void CopyHeap(const char *src, int32_t num_bytes, char *dst) {
+  std::copy(src, src + num_bytes, dst);
+}
+}