fix: address camera video PR feedback

src/__tests__/client.test.ts

@@ -80,6 +80,35 @@ test('apps.open resolves session device identifiers from open response', async (
   assert.equal(result.device?.ios?.simulatorSetPath, '/tmp/sim-set');
 });
 
+test('devices.boot forwards Android emulator camera options', async () => {
+  const setup = createTransport(async () => ({
+    ok: true,
+    data: {
+      platform: 'android',
+      target: 'mobile',
+      device: 'Pixel_9_Pro_XL',
+      id: 'emulator-5554',
+      kind: 'emulator',
+      booted: true,
+    },
+  }));
+  const client = createAgentDeviceClient(setup.config, { transport: setup.transport });
+
+  await client.devices.boot({
+    platform: 'android',
+    device: 'Pixel_9_Pro_XL',
+    cameraFront: '/tmp/front.mp4',
+    cameraBack: 'virtualscene',
+  });
+
+  assert.equal(setup.calls.length, 1);
+  assert.equal(setup.calls[0]?.command, 'boot');
+  assert.equal(setup.calls[0]?.flags?.platform, 'android');
+  assert.equal(setup.calls[0]?.flags?.device, 'Pixel_9_Pro_XL');
+  assert.equal(setup.calls[0]?.flags?.cameraFront, '/tmp/front.mp4');
+  assert.equal(setup.calls[0]?.flags?.cameraBack, 'virtualscene');
+});
+
 test('apps.open forwards explicit runtime hints through the daemon request', async () => {
   const setup = createTransport(async () => ({
     ok: true,

src/client-normalizers.ts

@@ -311,6 +311,8 @@ export function buildFlags(options: InternalRequestOptions): CommandFlags {
     pauseMs: options.pauseMs,
     pattern: options.pattern,
     headless: options.headless,
+    cameraFront: options.cameraFront,
+    cameraBack: options.cameraBack,
     restart: options.restart,
     replayUpdate: options.replayUpdate,
     replayBackend: options.replayBackend,

src/platforms/android/devices.ts

@@ -438,27 +438,9 @@ export async function ensureAndroidEmulatorBooted(params: {
     resolvedAvdName,
     params.serial,
   );
-  if (existing && (params.cameraFront || params.cameraBack)) {
-    throw new AppError(
-      'INVALID_STATE',
-      'Android emulator camera inputs can only be applied when starting an emulator.',
-      {
-        avdName: resolvedAvdName,
-        serial: existing.id,
-        hint: 'Shut down the emulator first, then run boot again with --camera-front or --camera-back.',
-      },
-    );
-  }
+  assertCameraInputsCanApplyToEmulator(existing, resolvedAvdName, params);
   if (!existing) {
-    const launchArgs = ['-avd', resolvedAvdName];
-    if (params.headless) {
-      launchArgs.push('-no-window', '-no-audio');
-    }
-    const cameraFront = resolveAndroidEmulatorCameraMode(params.cameraFront, 'front');
-    if (cameraFront) launchArgs.push('-camera-front', cameraFront);
-    const cameraBack = resolveAndroidEmulatorCameraMode(params.cameraBack, 'back');
-    if (cameraBack) launchArgs.push('-camera-back', cameraBack);
-    runCmdDetached('emulator', launchArgs);
+    runCmdDetached('emulator', buildEmulatorLaunchArgs(resolvedAvdName, params));
   }
 
   const discovered =
@@ -487,6 +469,45 @@ export async function ensureAndroidEmulatorBooted(params: {
   };
 }
 
+function assertCameraInputsCanApplyToEmulator(
+  existing: DeviceInfo | undefined,
+  resolvedAvdName: string,
+  params: {
+    cameraFront?: string;
+    cameraBack?: string;
+  },
+): void {
+  if (!existing || (!params.cameraFront && !params.cameraBack)) return;
+  throw new AppError(
+    'INVALID_STATE',
+    'Android emulator camera inputs can only be applied when starting an emulator.',
+    {
+      avdName: resolvedAvdName,
+      serial: existing.id,
+      hint: 'Shut down the emulator first, then run boot again with --camera-front or --camera-back.',
+    },
+  );
+}
+
+function buildEmulatorLaunchArgs(
+  resolvedAvdName: string,
+  params: {
+    headless?: boolean;
+    cameraFront?: string;
+    cameraBack?: string;
+  },
+): string[] {
+  const launchArgs = ['-avd', resolvedAvdName];
+  if (params.headless) {
+    launchArgs.push('-no-window', '-no-audio');
+  }
+  const cameraFront = resolveAndroidEmulatorCameraMode(params.cameraFront, 'front');
+  if (cameraFront) launchArgs.push('-camera-front', cameraFront);
+  const cameraBack = resolveAndroidEmulatorCameraMode(params.cameraBack, 'back');
+  if (cameraBack) launchArgs.push('-camera-back', cameraBack);
+  return launchArgs;
+}
+
 function resolveAndroidEmulatorCameraMode(
   value: string | undefined,
   camera: 'front' | 'back',

website/docs/docs/client-api.md

@@ -257,6 +257,19 @@ Additional CLI-backed methods are exposed on their domain groups with typed opti
 - `client.recording.record()` and `client.recording.trace()`
 - `client.settings.update()`
 
+`client.devices.boot({ platform: 'android', device: 'Pixel_9_Pro_XL', headless: true })` starts an Android emulator without a GUI when it is not already running. To launch with emulator camera inputs, pass `cameraFront` and/or `cameraBack` with `emulated`, `none`, `webcam<N>`, `virtualscene` for the back camera, or a video file path:
+
+```ts
+await client.devices.boot({
+  platform: 'android',
+  device: 'Pixel_9_Pro_XL',
+  cameraFront: './front.mp4',
+  cameraBack: 'virtualscene',
+});
+```
+
+Camera inputs are Android-emulator-only and apply only when starting the emulator; shut down a running emulator before changing them.
+
 `client.observability.perf()` returns daemon-shaped JSON so local and remote transports expose the same metrics payload. Pass `{ area: 'metrics' }` for the broad startup/CPU/memory/frame first pass, or `{ area: 'frames' }` for a focused frame/jank-health payload. On Android and supported Apple targets, `data.metrics.fps.droppedFramePercent` is the primary frame-smoothness value. Android derives it from the current `adb shell dumpsys gfxinfo <package> framestats` window; connected iOS devices derive it from `xcrun xctrace` Animation Hitches for the active app process. Frame samples include `windowStartedAt`, `windowEndedAt`, and `worstWindows` so agents can correlate dropped-frame clusters with logs, network entries, and their own session actions. A successful Android read resets Android frame stats; `open <app>` resets the Android frame window too, so agents can call `perf({ area: 'frames' })`, perform a transition or gesture, then call it again to inspect that focused window. iOS simulator and macOS app sessions report frame health as unavailable rather than inventing FPS or dropped-frame values.
 
 `client.recording.record({ action: 'start', path, quality: 5 })` starts a smaller 50% resolution video; omit `quality` to keep native/current resolution.

website/docs/docs/commands.md

@@ -38,6 +38,7 @@ agent-device boot
 agent-device boot --platform ios
 agent-device boot --platform android
 agent-device boot --platform android --device Pixel_9_Pro_XL --headless
+agent-device boot --platform android --device Pixel_9_Pro_XL --camera-back ./back.mp4 --camera-front none
 agent-device shutdown --platform ios
 agent-device shutdown --platform android --device Pixel_9_Pro_XL
 agent-device open [app|url] [url]
@@ -62,6 +63,8 @@ agent-device app-switcher
 - `boot` is mainly needed when starting a new session and `open` fails because no booted simulator/emulator is available.
 - Android: `boot --platform android --device <avd-name>` launches that emulator in GUI mode when needed.
 - Android: add `--headless` to launch without opening a GUI window.
+- Android: add `--camera-front <mode|videoPath>` and/or `--camera-back <mode|videoPath>` when launching an emulator with camera inputs. Supported modes are `emulated`, `none`, `webcam<N>`, and `virtualscene` for the back camera only. File paths are converted to `videofile:<absolute-path>` for the emulator.
+- Android camera inputs apply only when starting an emulator. Shut down an already-running emulator first, then run `boot` again with the camera flags.
 - Android: `shutdown --platform android --device <avd-name>` stops a running emulator.
 - `open [app|url] [url]` already boots/activates the selected target when needed.
 - `open <url>` deep links are supported on Android and iOS.