biw · biw · Aug 10, 2026 · Aug 10, 2026 · Aug 10, 2026 · Aug 10, 2026
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -51,6 +51,7 @@ jobs:
           - ubuntu-22.04
           - ubuntu-22.04-arm
           - windows-2022
+          - windows-11-arm
 
     steps:
       - name: Checkout repository
@@ -77,6 +78,13 @@ jobs:
         if: matrix.node == 24
         run: pnpm prebuild
 
+      - name: Test selected N-API prebuild
+        if: matrix.node == 24
+        env:
+          PREBUILDS_ONLY: "1"
+          LIBOPUS_TEST_NATIVE: "1"
+        run: pnpm test-native
+
       - name: Run tests
         run: pnpm test
 
@@ -131,7 +139,8 @@ jobs:
               if [ "${{ matrix.node }}" = "24" ]; then
                 # Build N-API prebuilds for musl, tagging libc so node-gyp-build
                 # can prefer them on Alpine.
-                pnpm prebuild
+                pnpm prebuild &&
+                PREBUILDS_ONLY=1 LIBOPUS_TEST_NATIVE=1 pnpm test-native
               fi &&
               pnpm test
             '
@@ -179,7 +188,7 @@ jobs:
           # package builds run in the platform-native jobs above; this job
           # verifies the OpenBSD prebuild itself.
           pnpm prebuild
-          LIBOPUS_TEST_NATIVE=1 node src/tests/test.js
+          PREBUILDS_ONLY=1 LIBOPUS_TEST_NATIVE=1 node src/tests/test.js
 
       - name: Archive OpenBSD prebuilds
         run: tar -czf prebuilds-openbsd-x64.tar.gz -C prebuilds .
@@ -190,10 +199,10 @@ jobs:
           name: prebuild-openbsd-x64
           path: prebuilds-openbsd-x64.tar.gz
 
-  verify_release_artifact:
-    name: Verify packed release on Alpine Linux arm64
+  package_release_candidate:
+    name: Assemble packed release candidate
     needs: [quality, build, build_musl, build_openbsd]
-    runs-on: ubuntu-22.04-arm
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v5
@@ -255,47 +264,159 @@ jobs:
             exit 1
           fi
 
-      - name: Verify the packed module in native Alpine arm64
+      - name: Upload packed release candidate
+        uses: actions/upload-artifact@v6
+        with:
+          name: release-candidate
+          path: artifacts/package/*.tgz
+
+  verify_release_artifact:
+    name: Verify packed release on ${{ matrix.name }}
+    needs: package_release_candidate
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: Linux glibc x64
+            runner: ubuntu-22.04
+            platform: linux
+            architecture: x64
+            libc: glibc
+          - name: Linux glibc arm64
+            runner: ubuntu-22.04-arm
+            platform: linux
+            architecture: arm64
+            libc: glibc
+          - name: macOS x64
+            runner: macos-15-intel
+            platform: darwin
+            architecture: x64
+            libc: glibc
+          - name: macOS arm64
+            runner: macos-15
+            platform: darwin
+            architecture: arm64
+            libc: glibc
+          - name: Windows x64
+            runner: windows-2022
+            platform: win32
+            architecture: x64
+            libc: glibc
+          - name: Windows arm64
+            runner: windows-11-arm
+            platform: win32
+            architecture: arm64
+            libc: glibc
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Setup pnpm
+        uses: pnpm/action-setup@v6
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v5
+        with:
+          node-version: 24
+
+      - name: Download packed release candidate
+        uses: actions/download-artifact@v7
+        with:
+          name: release-candidate
+          path: artifacts/package
+
+      - name: Install and test the packed module
+        env:
+          LIBOPUS_EXPECTED_PLATFORM: ${{ matrix.platform }}
+          LIBOPUS_EXPECTED_ARCH: ${{ matrix.architecture }}
+          LIBOPUS_EXPECTED_LIBC: ${{ matrix.libc }}
+        run: node scripts/verify-packed-package.mjs artifacts/package
+
+  verify_release_artifact_musl:
+    name: Verify packed release on Alpine Linux ${{ matrix.architecture }}
+    needs: package_release_candidate
+    runs-on: ${{ matrix.runner }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - architecture: x64
+            runner: ubuntu-22.04
+          - architecture: arm64
+            runner: ubuntu-22.04-arm
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Download packed release candidate
+        uses: actions/download-artifact@v7
+        with:
+          name: release-candidate
+          path: artifacts/package
+
+      - name: Install and test the packed module in Alpine
         run: |
           set -euo pipefail
-          tar -tzf artifacts/package/*.tgz | grep -E '^package/prebuilds/linux-arm64/.*\.musl\.node$'
           docker run --rm \
-            -v "${{ github.workspace }}/artifacts/package:/package:ro" \
+            -v "${{ github.workspace }}:/work:ro" \
+            -w /work \
+            -e LIBOPUS_EXPECTED_PLATFORM=linux \
+            -e LIBOPUS_EXPECTED_ARCH=${{ matrix.architecture }} \
+            -e LIBOPUS_EXPECTED_LIBC=musl \
             node:24-alpine \
             sh -lc '
               set -euo pipefail
-              test "$(uname -m)" = aarch64
-              mkdir /consumer
-              cd /consumer
-              npm init --yes >/dev/null
-              npm install --foreground-scripts /package/*.tgz
-              node - <<"NODE"
-              const assert = require("node:assert");
-              const fs = require("node:fs");
-              const { createRequire } = require("node:module");
-              const path = require("node:path");
-
-              const packageRoot = path.resolve("node_modules/libopus-node");
-              const packageRequire = createRequire(path.join(packageRoot, "package.json"));
-              const selected = packageRequire("node-gyp-build").resolve(packageRoot);
-
-              assert.match(selected, /\/prebuilds\/linux-arm64\/.*\.musl\.node$/);
-              assert(!fs.existsSync(path.join(packageRoot, "build")));
-              console.log(`Selected Alpine arm64 musl prebuild: ${selected}`);
-          NODE
-              node --input-type=module -e "
-                import { OpusEncoder } from \"libopus-node\";
-                const encoder = new OpusEncoder(16_000, 1);
-                const pcm = Buffer.alloc(640);
-                for (let i = 0; i < 320; i++) {
-                  pcm.writeInt16LE(Math.round(12_000 * Math.sin((2 * Math.PI * i) / 40)), i * 2);
-                }
-                if (encoder.encode(pcm).length === 0) throw new Error(\"Encoder produced no packet\");
-              "
+              npm install --global corepack@0.35.0
+              corepack enable
+              node scripts/verify-packed-package.mjs artifacts/package
             '
 
+  verify_release_artifact_openbsd:
+    name: Verify packed release on OpenBSD x86-64
+    needs: package_release_candidate
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+
+      - name: Download packed release candidate
+        uses: actions/download-artifact@v7
+        with:
+          name: release-candidate
+          path: artifacts/package
+
+      - name: Start OpenBSD VM
+        uses: cross-platform-actions/action@v1.4.0
+        with:
+          operating_system: openbsd
+          version: "7.8"
+          architecture: x86-64
+
+      - name: Install and test the packed module on OpenBSD
+        shell: cpa.sh {0}
+        run: |
+          set -euo pipefail
+          sudo pkg_add node npm
+          sudo npm install --global corepack@0.35.0
+          sudo corepack enable
+          LIBOPUS_EXPECTED_PLATFORM=openbsd \
+          LIBOPUS_EXPECTED_ARCH=x64 \
+          LIBOPUS_EXPECTED_LIBC=glibc \
+          node scripts/verify-packed-package.mjs artifacts/package
+
   publish:
-    needs: [quality, build, build_musl, build_openbsd, verify_release_artifact]
+    needs:
+      - quality
+      - build
+      - build_musl
+      - build_openbsd
+      - package_release_candidate
+      - verify_release_artifact
+      - verify_release_artifact_musl
+      - verify_release_artifact_openbsd
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     uses: ./.github/workflows/publish.yml
     permissions:

diff --git a/README.md b/README.md
@@ -310,7 +310,7 @@ Prebuilt binaries are provided for:
 | Linux (glibc)    | x64, arm64    |
 | Linux (musl)     | x64, arm64    |
 | macOS            | x64, arm64    |
-| Windows          | x64           |
+| Windows          | x64, arm64    |
 | OpenBSD          | x64           |
 
 If a prebuilt binary is not available for your platform, the package cannot be used on that platform.

diff --git a/libopus/binding.gyp b/libopus/binding.gyp
@@ -227,6 +227,24 @@
                         ],
                     }
                 ],
+                [
+                    "OS==\"win\" and target_arch==\"arm64\"",
+                    {
+                        # MSVC's C compiler cannot fold the floating-point
+                        # constants in these upstream tables on ARM64 (C2099).
+                        # Compile the two table translation units as C++ instead.
+                        "sources!": [
+                            "opus/celt/quant_bands.c",
+                            "opus/silk/tables_NLSF_CB_WB.c",
+                            "opus/silk/tables_NLSF_CB_NB_MB.c",
+                        ],
+                        "sources": [
+                            "win/arm64/quant_bands.cc",
+                            "win/arm64/tables_NLSF_CB_WB.cc",
+                            "win/arm64/tables_NLSF_CB_NB_MB.cc",
+                        ],
+                    }
+                ],
             ],
         },
     ],

diff --git a/libopus/config/win/arm64/config.h b/libopus/config/win/arm64/config.h
@@ -0,0 +1,45 @@
+/***********************************************************************
+Copyright (c) 2011, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#define USE_ALLOCA 1
+
+/* Comment out the next line for floating-point code */
+/* #define FIXED_POINT 1 */
+
+/* AArch64 requires NEON and MSVC supplies the corresponding intrinsics. */
+#define OPUS_ARM_MAY_HAVE_NEON_INTR 1
+#define OPUS_ARM_PRESUME_AARCH64_NEON_INTR 1
+#define OPUS_ARM_PRESUME_NEON_INTR 1
+
+#define OPUS_BUILD 1
+
+#define PACKAGE_VERSION "1.3.1"
+
+#endif /* CONFIG_H */
diff --git a/libopus/win/arm64/quant_bands.cc b/libopus/win/arm64/quant_bands.cc
@@ -0,0 +1,8 @@
+/*
+ * MSVC's ARM64 C frontend reports C2099 for floating-point static initializers
+ * in this upstream table. Compiling the original translation unit as C++
+ * preserves the table contents while allowing those initializers.
+ */
+extern "C" {
+#include "../../opus/celt/quant_bands.c"
+}
diff --git a/libopus/win/arm64/tables_NLSF_CB_NB_MB.cc b/libopus/win/arm64/tables_NLSF_CB_NB_MB.cc
@@ -0,0 +1,4 @@
+/*
+ * See tables_NLSF_CB_WB.cc for why this upstream table is compiled as C++.
+ */
+#include "../../opus/silk/tables_NLSF_CB_NB_MB.c"
diff --git a/libopus/win/arm64/tables_NLSF_CB_WB.cc b/libopus/win/arm64/tables_NLSF_CB_WB.cc
@@ -0,0 +1,6 @@
+/*
+ * MSVC's ARM64 C frontend reports C2099 for floating-point static initializers
+ * in this upstream table. Compiling the original translation unit as C++
+ * preserves the table contents while allowing those initializers.
+ */
+#include "../../opus/silk/tables_NLSF_CB_WB.c"
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "libopus-node",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "libopus bindings for Node",
   "keywords": [
     "binary",