Add WebAssembly (WASM) for speech enhancement GTCRN models (#2002)

wasm/speech-enhancement/sherpa-onnx-wasm-main-speech-enhancement.cc

@@ -0,0 +1,39 @@
+// wasm/sherpa-onnx-wasm-main-speech-enhancement.cc
+//
+// Copyright (c)  2025  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(SherpaOnnxOfflineSpeechDenoiserGtcrnModelConfig) == 1 * 4,
+              "");
+static_assert(sizeof(SherpaOnnxOfflineSpeechDenoiserModelConfig) ==
+                  sizeof(SherpaOnnxOfflineSpeechDenoiserGtcrnModelConfig) +
+                      3 * 4,
+              "");
+static_assert(sizeof(SherpaOnnxOfflineSpeechDenoiserConfig) ==
+                  sizeof(SherpaOnnxOfflineSpeechDenoiserModelConfig),
+              "");
+
+void MyPrint(SherpaOnnxOfflineSpeechDenoiserConfig *config) {
+  auto model = &config->model;
+  auto gtcrn = &model->gtcrn;
+  fprintf(stdout, "----------offline speech denoiser model config----------\n");
+  fprintf(stdout, "gtcrn: %s\n", gtcrn->model);
+  fprintf(stdout, "num threads: %d\n", model->num_threads);
+  fprintf(stdout, "debug: %d\n", model->debug);
+  fprintf(stdout, "provider: %s\n", model->provider);
+}
+
+void CopyHeap(const char *src, int32_t num_bytes, char *dst) {
+  std::copy(src, src + num_bytes, dst);
+}
+}