feat: add sharedTexture module to import shared texture (#48831)

feat: add `sharedTexture` module.

Co-authored-by: trop[bot] <37223003+trop[bot]@users.noreply.github.com>
Co-authored-by: reito <reito@chromium.org>

lib/renderer/api/module-list.ts

@@ -4,6 +4,7 @@ export const rendererModuleList: ElectronInternal.ModuleEntry[] = [
   { name: 'contextBridge', loader: () => require('./context-bridge') },
   { name: 'crashReporter', loader: () => require('./crash-reporter') },
   { name: 'ipcRenderer', loader: () => require('./ipc-renderer') },
+  { name: 'sharedTexture', loader: () => require('./shared-texture') },
   { name: 'webFrame', loader: () => require('./web-frame') },
   { name: 'webUtils', loader: () => require('./web-utils') }
 ];

lib/renderer/api/shared-texture.ts

@@ -0,0 +1,45 @@
+import { IPC_MESSAGES } from '@electron/internal/common/ipc-messages';
+import ipcRenderer from '@electron/internal/renderer/api/ipc-renderer';
+import { ipcRendererInternal } from '@electron/internal/renderer/ipc-renderer-internal';
+
+const sharedTextureNative = process._linkedBinding('electron_common_shared_texture');
+const transferChannelName = IPC_MESSAGES.IMPORT_SHARED_TEXTURE_TRANSFER_MAIN_TO_RENDERER;
+
+type SharedTextureReceiverCallback = (data: Electron.ReceivedSharedTextureData, ...args: any[]) => Promise<void>;
+let sharedTextureReceiverCallback: SharedTextureReceiverCallback | null = null;
+
+ipcRendererInternal.on(transferChannelName, async (event, requestId, ...args) => {
+  const replyChannel = `${transferChannelName}_RESPONSE_${requestId}`;
+  try {
+    const transfer = args[0] as Electron.SharedTextureTransfer;
+    const textureId = args[1] as string;
+    const imported = sharedTextureNative.finishTransferSharedTexture(Object.assign(transfer, { id: textureId }));
+    const syncToken = imported.getFrameCreationSyncToken();
+    event.sender.send(replyChannel, null, syncToken);
+
+    const wrapper: Electron.SharedTextureImported = {
+      textureId,
+      subtle: imported,
+      getVideoFrame: imported.getVideoFrame,
+      release: () => {
+        imported.release(async () => {
+          await ipcRenderer.invoke(IPC_MESSAGES.IMPORT_SHARED_TEXTURE_RELEASE_RENDERER_TO_MAIN, textureId);
+        });
+      }
+    };
+
+    const data: Electron.ReceivedSharedTextureData = { importedSharedTexture: wrapper };
+    await sharedTextureReceiverCallback?.(data, ...args.slice(2));
+  } catch (error) {
+    event.sender.send(replyChannel, error);
+  }
+});
+
+const sharedTexture = {
+  subtle: sharedTextureNative,
+  setSharedTextureReceiver: (callback: SharedTextureReceiverCallback) => {
+    sharedTextureReceiverCallback = callback;
+  }
+};
+
+export default sharedTexture;