* This has been a re-write with pieces taken and improved from GCamModule and * PhotoModule, which are to be retired eventually. *
*/ public class CaptureModule extends CameraModule implements ModuleController, CountDownView.OnCountDownStatusListener, OneCamera.PictureCallback, OneCamera.FocusStateListener, OneCamera.ReadyStateChangedListener, RemoteCameraModule { private static final Tag TAG = new Tag("CaptureModule"); /** Enable additional debug output. */ private static final boolean DEBUG = true; /** Workaround Flag for b/19271661 to use autotransformation in Capture Layout in Nexus4 **/ private static final boolean USE_AUTOTRANSFORM_UI_LAYOUT = ApiHelper.IS_NEXUS_4; /** Timeout for camera open/close operations. */ private static final int CAMERA_OPEN_CLOSE_TIMEOUT_MILLIS = 2500; /** System Properties switch to enable debugging focus UI. */ private static final boolean CAPTURE_DEBUG_UI = DebugPropertyHelper.showCaptureDebugUI(); private final Object mDimensionLock = new Object(); /** * Sticky Gcam mode is when this module's sole purpose it to be the Gcam * mode. If true, the device uses {@link PhotoModule} for normal picture * taking. */ private final boolean mStickyGcamCamera; /** Controller giving us access to other services. */ private final AppController mAppController; /** The applications settings manager. */ private final SettingsManager mSettingsManager; /** Application context. */ private final Context mContext; /** Module UI. */ private CaptureModuleUI mUI; /** The camera manager used to open cameras. */ private OneCameraOpener mOneCameraOpener; /** The manager to query for camera device information */ private OneCameraManager mOneCameraManager; /** The currently opened camera device, or null if the camera is closed. */ private OneCamera mCamera; /** The selected picture size. */ private Size mPictureSize; /** Fair semaphore held when opening or closing the camera. */ private final Semaphore mCameraOpenCloseLock = new Semaphore(1, true); /** The direction the currently opened camera is facing to. */ private Facing mCameraFacing; /** Whether HDR Scene mode is currently enabled. */ private boolean mHdrSceneEnabled = false; private boolean mHdrPlusEnabled = false; private final Object mSurfaceTextureLock = new Object(); /** * Flag that is used when Fatal Error Handler is running and the app should * not continue execution */ private boolean mShowErrorAndFinish; private TouchCoordinate mLastShutterTouchCoordinate = null; private FocusController mFocusController; private OneCameraCharacteristics mCameraCharacteristics; final private PreviewTransformCalculator mPreviewTransformCalculator; /** The listener to listen events from the CaptureModuleUI. */ private final CaptureModuleUI.CaptureModuleUIListener mUIListener = new CaptureModuleUI.CaptureModuleUIListener() { @Override public void onZoomRatioChanged(float zoomRatio) { mZoomValue = zoomRatio; if (mCamera != null) { mCamera.setZoom(zoomRatio); } } }; /** The listener to respond preview area changes. */ private final PreviewStatusListener.PreviewAreaChangedListener mPreviewAreaChangedListener = new PreviewStatusListener.PreviewAreaChangedListener() { @Override public void onPreviewAreaChanged(RectF previewArea) { mPreviewArea = previewArea; mFocusController.configurePreviewDimensions(previewArea); } }; /** The listener to listen events from the preview. */ private final PreviewStatusListener mPreviewStatusListener = new PreviewStatusListener() { @Override public void onPreviewLayoutChanged(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) { int width = right - left; int height = bottom - top; updatePreviewTransform(width, height, false); } @Override public boolean shouldAutoAdjustTransformMatrixOnLayout() { return USE_AUTOTRANSFORM_UI_LAYOUT; } @Override public void onPreviewFlipped() { // Do nothing because when preview is flipped, TextureView will lay // itself out again, which will then trigger a transform matrix // update. } @Override public GestureDetector.OnGestureListener getGestureListener() { return new GestureDetector.SimpleOnGestureListener() { @Override public boolean onSingleTapUp(MotionEvent ev) { Point tapPoint = new Point((int) ev.getX(), (int) ev.getY()); Log.v(TAG, "onSingleTapUpPreview location=" + tapPoint); if (!mCameraCharacteristics.isAutoExposureSupported() && !mCameraCharacteristics.isAutoFocusSupported()) { return false; } startActiveFocusAt(tapPoint.x, tapPoint.y); return true; } }; } @Override public View.OnTouchListener getTouchListener() { return null; } @Override public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { Log.d(TAG, "onSurfaceTextureAvailable"); // Force to re-apply transform matrix here as a workaround for // b/11168275 updatePreviewTransform(width, height, true); synchronized (mSurfaceTextureLock) { mPreviewSurfaceTexture = surface; } reopenCamera(); } @Override public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { Log.d(TAG, "onSurfaceTextureDestroyed"); synchronized (mSurfaceTextureLock) { mPreviewSurfaceTexture = null; } closeCamera(); return true; } @Override public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) { Log.d(TAG, "onSurfaceTextureSizeChanged"); updatePreviewBufferSize(); } @Override public void onSurfaceTextureUpdated(SurfaceTexture surface) { if (mState == ModuleState.UPDATE_TRANSFORM_ON_NEXT_SURFACE_TEXTURE_UPDATE) { Log.d(TAG, "onSurfaceTextureUpdated --> updatePreviewTransform"); mState = ModuleState.IDLE; CameraAppUI appUI = mAppController.getCameraAppUI(); updatePreviewTransform(appUI.getSurfaceWidth(), appUI.getSurfaceHeight(), true); } } }; private final OneCamera.PictureSaverCallback mPictureSaverCallback = new OneCamera.PictureSaverCallback() { @Override public void onRemoteThumbnailAvailable(final byte[] jpegImage) { mMainThread.execute(new Runnable() { @Override public void run() { mAppController.getServices().getRemoteShutterListener() .onPictureTaken(jpegImage); } }); } }; /** State by the module state machine. */ private static enum ModuleState { IDLE, WATCH_FOR_NEXT_FRAME_AFTER_PREVIEW_STARTED, UPDATE_TRANSFORM_ON_NEXT_SURFACE_TEXTURE_UPDATE, } /** The current state of the module. */ private ModuleState mState = ModuleState.IDLE; /** Current zoom value. */ private float mZoomValue = 1f; /** Records beginning frame of each AF scan. */ private long mAutoFocusScanStartFrame = -1; /** Records beginning time of each AF scan in uptimeMillis. */ private long mAutoFocusScanStartTime; /** Heading sensor. */ private HeadingSensor mHeadingSensor; /** Used to fetch and embed the location into captured images. */ private final LocationManager mLocationManager; /** Plays sounds for countdown timer. */ private SoundPlayer mSoundPlayer; private final MediaActionSound mMediaActionSound; /** Whether the module is paused right now. */ private boolean mPaused; /** Main thread. */ private final MainThread mMainThread; /** Handler thread for camera-related operations. */ private Handler mCameraHandler; /** Current display rotation in degrees. */ private int mDisplayRotation; /** Current screen width in pixels. */ private int mScreenWidth; /** Current screen height in pixels. */ private int mScreenHeight; /** Current width of preview frames from camera. */ private int mPreviewBufferWidth; /** Current height of preview frames from camera.. */ private int mPreviewBufferHeight; /** Area used by preview. */ RectF mPreviewArea; /** The surface texture for the preview. */ private SurfaceTexture mPreviewSurfaceTexture; /** The burst manager for controlling the burst. */ private final BurstFacade mBurstController; private static final String BURST_SESSIONS_DIR = "burst_sessions"; private final Profiler mProfiler = Profilers.instance().guard(); public CaptureModule(AppController appController) { this(appController, false); } /** Constructs a new capture module. */ public CaptureModule(AppController appController, boolean stickyHdr) { super(appController); Profile guard = mProfiler.create("new CaptureModule").start(); mPaused = true; mMainThread = MainThread.create(); mAppController = appController; mContext = mAppController.getAndroidContext(); mSettingsManager = mAppController.getSettingsManager(); mStickyGcamCamera = stickyHdr; mLocationManager = mAppController.getLocationManager(); mPreviewTransformCalculator = new PreviewTransformCalculator( mAppController.getOrientationManager()); mBurstController = BurstFacadeFactory.create(mContext, new OrientationLockController() { @Override public void unlockOrientation() { mAppController.getOrientationManager().unlockOrientation(); } @Override public void lockOrientation() { mAppController.getOrientationManager().lockOrientation(); } }, new BurstReadyStateChangeListener() { @Override public void onBurstReadyStateChanged(boolean ready) { // TODO: This needs to take into account the state of // the whole system, not just burst. onReadyStateChanged(false); } }); mMediaActionSound = new MediaActionSound(); guard.stop(); } private boolean updateCameraCharacteristics() { try { CameraId cameraId = mOneCameraManager.findFirstCameraFacing(mCameraFacing); if (cameraId != null && cameraId.getValue() != null) { mCameraCharacteristics = mOneCameraManager.getOneCameraCharacteristics(cameraId); return mCameraCharacteristics != null; } } catch (OneCameraAccessException ignored) { } mAppController.getFatalErrorHandler().onGenericCameraAccessFailure(); return false; } @Override public void init(CameraActivity activity, boolean isSecureCamera, boolean isCaptureIntent) { Profile guard = mProfiler.create("CaptureModule.init").start(); Log.d(TAG, "init UseAutotransformUiLayout = " + USE_AUTOTRANSFORM_UI_LAYOUT); HandlerThread thread = new HandlerThread("CaptureModule.mCameraHandler"); thread.start(); mCameraHandler = new Handler(thread.getLooper()); mOneCameraOpener = mAppController.getCameraOpener(); try { mOneCameraManager = OneCameraModule.provideOneCameraManager(); } catch (OneCameraException e) { Log.e(TAG, "Unable to provide a OneCameraManager. ", e); } mDisplayRotation = CameraUtil.getDisplayRotation(); mCameraFacing = getFacingFromCameraId( mSettingsManager.getInteger(mAppController.getModuleScope(), Keys.KEY_CAMERA_ID)); mShowErrorAndFinish = !updateCameraCharacteristics(); if (mShowErrorAndFinish) { return; } mUI = new CaptureModuleUI(activity, mAppController.getModuleLayoutRoot(), mUIListener); mAppController.setPreviewStatusListener(mPreviewStatusListener); synchronized (mSurfaceTextureLock) { mPreviewSurfaceTexture = mAppController.getCameraAppUI().getSurfaceTexture(); } mSoundPlayer = new SoundPlayer(mContext); FocusSound focusSound = new FocusSound(mSoundPlayer, R.raw.material_camera_focus); mFocusController = new FocusController(mUI.getFocusRing(), focusSound, mMainThread); mHeadingSensor = new HeadingSensor(AndroidServices.instance().provideSensorManager()); View cancelButton = activity.findViewById(R.id.shutter_cancel_button); cancelButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { cancelCountDown(); } }); mMediaActionSound.load(MediaActionSound.SHUTTER_CLICK); guard.stop(); } @Override public void onShutterButtonLongPressed() { try { OneCameraCharacteristics cameraCharacteristics; CameraId cameraId = mOneCameraManager.findFirstCameraFacing(mCameraFacing); cameraCharacteristics = mOneCameraManager.getOneCameraCharacteristics(cameraId); DeviceOrientation deviceOrientation = mAppController.getOrientationManager() .getDeviceOrientation(); ImageRotationCalculator imageRotationCalculator = ImageRotationCalculatorImpl .from(mAppController.getOrientationManager(), cameraCharacteristics); mBurstController.startBurst( new CaptureSession.CaptureSessionCreator() { @Override public CaptureSession createAndStartEmpty() { return createAndStartUntrackedCaptureSession(); } }, deviceOrientation, mCamera.getDirection(), imageRotationCalculator.toImageRotation().getDegrees()); } catch (OneCameraAccessException e) { Log.e(TAG, "Cannot start burst", e); return; } } @Override public void onShutterButtonFocus(boolean pressed) { if (!pressed) { // the shutter button was released, stop any bursts. mBurstController.stopBurst(); } } @Override public void onShutterCoordinate(TouchCoordinate coord) { mLastShutterTouchCoordinate = coord; } @Override public void onShutterButtonClick() { if (mCamera == null) { return; } int countDownDuration = mSettingsManager .getInteger(SettingsManager.SCOPE_GLOBAL, Keys.KEY_COUNTDOWN_DURATION); if (countDownDuration > 0) { // Start count down. mAppController.getCameraAppUI().transitionToCancel(); mAppController.getCameraAppUI().hideModeOptions(); mUI.setCountdownFinishedListener(this); mUI.startCountdown(countDownDuration); // Will take picture later via listener callback. } else { takePictureNow(); } } private void decorateSessionAtCaptureTime(CaptureSession session) { String flashSetting = mSettingsManager.getString(mAppController.getCameraScope(), Keys.KEY_FLASH_MODE); boolean gridLinesOn = Keys.areGridLinesOn(mSettingsManager); float timerDuration = mSettingsManager .getInteger(SettingsManager.SCOPE_GLOBAL, Keys.KEY_COUNTDOWN_DURATION); session.getCollector().decorateAtTimeCaptureRequest( eventprotos.NavigationChange.Mode.PHOTO_CAPTURE, session.getTitle() + ".jpg", (mCameraFacing == Facing.FRONT), mHdrSceneEnabled, mZoomValue, flashSetting, gridLinesOn, timerDuration, mLastShutterTouchCoordinate, null /* TODO: Implement Volume Button Shutter Click Instrumentation */, mCameraCharacteristics.getSensorInfoActiveArraySize() ); } private void takePictureNow() { if (mCamera == null) { Log.i(TAG, "Not taking picture since Camera is closed."); return; } CaptureSession session = createAndStartCaptureSession(); int orientation = mAppController.getOrientationManager().getDeviceOrientation() .getDegrees(); // TODO: This should really not use getExternalCacheDir and instead use // the SessionStorage API. Need to sync with gcam if that's OK. PhotoCaptureParameters params = new PhotoCaptureParameters( session.getTitle(), orientation, session.getLocation(), mContext.getExternalCacheDir(), this, mPictureSaverCallback, mHeadingSensor.getCurrentHeading(), mZoomValue, 0); decorateSessionAtCaptureTime(session); mCamera.takePicture(params, session); } /** * Creates, starts and returns a new capture session. The returned session * will have been started with an empty placeholder image. */ private CaptureSession createAndStartCaptureSession() { long sessionTime = getSessionTime(); Location location = mLocationManager.getCurrentLocation(); String title = CameraUtil.instance().createJpegName(sessionTime); CaptureSession session = getServices().getCaptureSessionManager() .createNewSession(title, sessionTime, location); session.startEmpty(new CaptureStats(mHdrPlusEnabled), new Size((int) mPreviewArea.width(), (int) mPreviewArea.height())); return session; } private CaptureSession createAndStartUntrackedCaptureSession() { long sessionTime = getSessionTime(); Location location = mLocationManager.getCurrentLocation(); String title = CameraUtil.instance().createJpegName(sessionTime); CaptureSession session = getServices().getCaptureSessionManager() .createNewSession(title, sessionTime, location); session.startEmpty(null, new Size((int) mPreviewArea.width(), (int) mPreviewArea.height())); return session; } private long getSessionTime() { // TODO: Replace with a mockable TimeProvider interface. return System.currentTimeMillis(); } @Override public void onCountDownFinished() { mAppController.getCameraAppUI().transitionToCapture(); mAppController.getCameraAppUI().showModeOptions(); if (mPaused) { return; } takePictureNow(); } @Override public void onRemainingSecondsChanged(int remainingSeconds) { if (remainingSeconds == 1) { mSoundPlayer.play(R.raw.timer_final_second, 0.6f); } else if (remainingSeconds == 2 || remainingSeconds == 3) { mSoundPlayer.play(R.raw.timer_increment, 0.6f); } } private void cancelCountDown() { if (mUI.isCountingDown()) { // Cancel on-going countdown. mUI.cancelCountDown(); } if (!mPaused) { mAppController.getCameraAppUI().showModeOptions(); mAppController.getCameraAppUI().transitionToCapture(); } } @Override public void onQuickExpose() { mMainThread.execute(new Runnable() { @Override public void run() { // Starts the short version of the capture animation UI. mAppController.startFlashAnimation(true); mMediaActionSound.play(MediaActionSound.SHUTTER_CLICK); } }); } @Override public void onRemoteShutterPress() { Log.d(TAG, "onRemoteShutterPress"); // TODO: Check whether shutter is enabled. takePictureNow(); } private void initSurfaceTextureConsumer() { synchronized (mSurfaceTextureLock) { if (mPreviewSurfaceTexture != null) { mPreviewSurfaceTexture.setDefaultBufferSize( mAppController.getCameraAppUI().getSurfaceWidth(), mAppController.getCameraAppUI().getSurfaceHeight()); } } reopenCamera(); } private void reopenCamera() { if (mPaused) { return; } AsyncTask.THREAD_POOL_EXECUTOR.execute(new Runnable() { @Override public void run() { closeCamera(); if(!mAppController.isPaused()) { openCameraAndStartPreview(); } } }); } private SurfaceTexture getPreviewSurfaceTexture() { synchronized (mSurfaceTextureLock) { return mPreviewSurfaceTexture; } } private void updatePreviewBufferSize() { synchronized (mSurfaceTextureLock) { if (mPreviewSurfaceTexture != null) { mPreviewSurfaceTexture.setDefaultBufferSize(mPreviewBufferWidth, mPreviewBufferHeight); } } } @Override public void resume() { if (mShowErrorAndFinish) { return; } Profile guard = mProfiler.create("CaptureModule.resume").start(); // We'll transition into 'ready' once the preview is started. onReadyStateChanged(false); mPaused = false; mAppController.addPreviewAreaSizeChangedListener(mPreviewAreaChangedListener); mAppController.addPreviewAreaSizeChangedListener(mUI); guard.mark(); getServices().getRemoteShutterListener().onModuleReady(this); guard.mark("getRemoteShutterListener.onModuleReady"); mBurstController.initialize(new SurfaceTexture(0)); // TODO: Check if we can really take a photo right now (memory, camera // state, ... ). mAppController.getCameraAppUI().enableModeOptions(); mAppController.setShutterEnabled(true); mAppController.getCameraAppUI().showAccessibilityZoomUI( mCameraCharacteristics.getAvailableMaxDigitalZoom()); mHdrPlusEnabled = mStickyGcamCamera || mAppController.getSettingsManager().getInteger( SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_HDR_PLUS) == 1; mHdrSceneEnabled = !mStickyGcamCamera && mAppController.getSettingsManager().getBoolean( SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_HDR); // This means we are resuming with an existing preview texture. This // means we will never get the onSurfaceTextureAvailable call. So we // have to open the camera and start the preview here. SurfaceTexture texture = getPreviewSurfaceTexture(); guard.mark(); if (texture != null) { initSurfaceTextureConsumer(); guard.mark("initSurfaceTextureConsumer"); } mSoundPlayer.loadSound(R.raw.timer_final_second); mSoundPlayer.loadSound(R.raw.timer_increment); guard.mark(); mHeadingSensor.activate(); guard.stop("mHeadingSensor.activate()"); } @Override public void pause() { if (mShowErrorAndFinish) { return; } cancelCountDown(); mPaused = true; mHeadingSensor.deactivate(); mAppController.removePreviewAreaSizeChangedListener(mUI); mAppController.removePreviewAreaSizeChangedListener(mPreviewAreaChangedListener); getServices().getRemoteShutterListener().onModuleExit(); mBurstController.release(); closeCamera(); resetTextureBufferSize(); mSoundPlayer.unloadSound(R.raw.timer_final_second); mSoundPlayer.unloadSound(R.raw.timer_increment); } @Override public void destroy() { mSoundPlayer.release(); mMediaActionSound.release(); mCameraHandler.getLooper().quitSafely(); } @Override public void onLayoutOrientationChanged(boolean isLandscape) { Log.d(TAG, "onLayoutOrientationChanged"); } @Override public void onCameraAvailable(CameraProxy cameraProxy) { // Ignore since we manage the camera ourselves until we remove this. } @Override public void hardResetSettings(SettingsManager settingsManager) { if (mStickyGcamCamera) { // Sticky HDR+ mode should hard reset HDR+ to on, and camera back // facing. settingsManager.set(SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_HDR_PLUS, true); settingsManager.set(mAppController.getModuleScope(), Keys.KEY_CAMERA_ID, mOneCameraManager.findFirstCameraFacing(Facing.BACK).getValue()); } } @Override public HardwareSpec getHardwareSpec() { return new HardwareSpec() { @Override public boolean isFrontCameraSupported() { return mOneCameraManager.hasCameraFacing(Facing.FRONT); } @Override public boolean isHdrSupported() { if (ApiHelper.IS_NEXUS_4 && is16by9AspectRatio(mPictureSize)) { Log.v(TAG, "16:9 N4, no HDR support"); return false; } else { return mCameraCharacteristics.isHdrSceneSupported(); } } @Override public boolean isHdrPlusSupported() { OneCameraFeatureConfig featureConfig = mAppController.getCameraFeatureConfig(); return featureConfig.getHdrPlusSupportLevel(mCameraFacing) != OneCameraFeatureConfig.HdrPlusSupportLevel.NONE; } @Override public boolean isFlashSupported() { return mCameraCharacteristics.isFlashSupported(); } }; } @Override public BottomBarUISpec getBottomBarSpec() { HardwareSpec hardwareSpec = getHardwareSpec(); BottomBarUISpec bottomBarSpec = new BottomBarUISpec(); bottomBarSpec.enableGridLines = true; bottomBarSpec.enableCamera = true; bottomBarSpec.cameraCallback = getCameraCallback(); bottomBarSpec.enableHdr = hardwareSpec.isHdrSupported() || hardwareSpec.isHdrPlusSupported(); bottomBarSpec.hdrCallback = getHdrButtonCallback(); bottomBarSpec.enableSelfTimer = true; bottomBarSpec.showSelfTimer = true; bottomBarSpec.isExposureCompensationSupported = mCameraCharacteristics .isExposureCompensationSupported(); bottomBarSpec.enableExposureCompensation = bottomBarSpec.isExposureCompensationSupported; // We must read the key from the settings because the button callback // is not executed until after this method is called. if ((hardwareSpec.isHdrPlusSupported() && mAppController.getSettingsManager().getBoolean( SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_HDR_PLUS)) || ( hardwareSpec.isHdrSupported() && mAppController.getSettingsManager().getBoolean( SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_HDR))) { // Disable flash if this is a sticky gcam camera, or if // HDR is enabled. bottomBarSpec.enableFlash = false; // Disable manual exposure if HDR is enabled. bottomBarSpec.enableExposureCompensation = false; } else { // If we are not in HDR / GCAM mode, fallback on the // flash supported property and manual exposure supported property // for this camera. bottomBarSpec.enableFlash = mCameraCharacteristics.isFlashSupported(); } bottomBarSpec.minExposureCompensation = mCameraCharacteristics.getMinExposureCompensation(); bottomBarSpec.maxExposureCompensation = mCameraCharacteristics.getMaxExposureCompensation(); bottomBarSpec.exposureCompensationStep = mCameraCharacteristics.getExposureCompensationStep(); bottomBarSpec.exposureCompensationSetCallback = new BottomBarUISpec.ExposureCompensationSetCallback() { @Override public void setExposure(int value) { mSettingsManager.set( mAppController.getCameraScope(), Keys.KEY_EXPOSURE, value); } }; return bottomBarSpec; } @Override public boolean isUsingBottomBar() { return true; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_CAMERA: case KeyEvent.KEYCODE_DPAD_CENTER: if (mUI.isCountingDown()) { cancelCountDown(); } else if (event.getRepeatCount() == 0) { onShutterButtonClick(); } return true; case KeyEvent.KEYCODE_VOLUME_UP: case KeyEvent.KEYCODE_VOLUME_DOWN: // Prevent default. return true; } return false; } @Override public boolean onKeyUp(int keyCode, KeyEvent event) { switch (keyCode) { case KeyEvent.KEYCODE_VOLUME_UP: case KeyEvent.KEYCODE_VOLUME_DOWN: onShutterButtonClick(); return true; } return false; } // TODO: Consider refactoring FocusOverlayManager. // Currently AF state transitions are controlled in OneCameraImpl. // PhotoModule uses FocusOverlayManager which uses API1/portability // logic and coordinates. private void startActiveFocusAt(int viewX, int viewY) { if (mCamera == null) { // If we receive this after the camera is closed, do nothing. return; } // TODO: make mFocusController final and remove null check. if (mFocusController == null) { Log.v(TAG, "CaptureModule mFocusController is null!"); return; } mFocusController.showActiveFocusAt(viewX, viewY); // Normalize coordinates to [0,1] per CameraOne API. float points[] = new float[2]; points[0] = (viewX - mPreviewArea.left) / mPreviewArea.width(); points[1] = (viewY - mPreviewArea.top) / mPreviewArea.height(); // Rotate coordinates to portrait orientation per CameraOne API. Matrix rotationMatrix = new Matrix(); rotationMatrix.setRotate(mDisplayRotation, 0.5f, 0.5f); rotationMatrix.mapPoints(points); // Invert X coordinate on front camera since the display is mirrored. if (mCameraCharacteristics.getCameraDirection() == Facing.FRONT) { points[0] = 1 - points[0]; } mCamera.triggerFocusAndMeterAtPoint(points[0], points[1]); // Log touch (screen coordinates). if (mZoomValue == 1f) { TouchCoordinate touchCoordinate = new TouchCoordinate( viewX - mPreviewArea.left, viewY - mPreviewArea.top, mPreviewArea.width(), mPreviewArea.height()); // TODO: Add to logging: duration, rotation. UsageStatistics.instance().tapToFocus(touchCoordinate, null); } } /** * Show AF target in center of preview. */ private void startPassiveFocus() { // TODO: make mFocusController final and remove null check. if (mFocusController == null) { return; } // TODO: Some passive focus scans may trigger on a location // instead of the center of the screen. mFocusController.showPassiveFocusAtCenter(); } /** * Update UI based on AF state changes. */ @Override public void onFocusStatusUpdate(final AutoFocusState state, long frameNumber) { Log.v(TAG, "AF status is state:" + state); switch (state) { case PASSIVE_SCAN: startPassiveFocus(); break; case ACTIVE_SCAN: // Unused, manual scans are triggered via the UI break; case PASSIVE_FOCUSED: case PASSIVE_UNFOCUSED: // Unused break; case ACTIVE_FOCUSED: case ACTIVE_UNFOCUSED: // Unused break; } if (CAPTURE_DEBUG_UI) { measureAutoFocusScans(state, frameNumber); } } private void measureAutoFocusScans(final AutoFocusState state, long frameNumber) { // Log AF scan lengths. boolean passive = false; switch (state) { case PASSIVE_SCAN: case ACTIVE_SCAN: if (mAutoFocusScanStartFrame == -1) { mAutoFocusScanStartFrame = frameNumber; mAutoFocusScanStartTime = SystemClock.uptimeMillis(); } break; case PASSIVE_FOCUSED: case PASSIVE_UNFOCUSED: passive = true; case ACTIVE_FOCUSED: case ACTIVE_UNFOCUSED: if (mAutoFocusScanStartFrame != -1) { long frames = frameNumber - mAutoFocusScanStartFrame; long dt = SystemClock.uptimeMillis() - mAutoFocusScanStartTime; int fps = Math.round(frames * 1000f / dt); String report = String.format("%s scan: fps=%d frames=%d", passive ? "CAF" : "AF", fps, frames); Log.v(TAG, report); mUI.showDebugMessage(String.format("%d / %d", frames, fps)); mAutoFocusScanStartFrame = -1; } break; } } @Override public void onReadyStateChanged(boolean readyForCapture) { if (readyForCapture) { mAppController.getCameraAppUI().enableModeOptions(); } mAppController.setShutterEnabled(readyForCapture); } @Override public String getPeekAccessibilityString() { return mAppController.getAndroidContext() .getResources().getString(R.string.photo_accessibility_peek); } @Override public void onThumbnailResult(byte[] jpegData) { getServices().getRemoteShutterListener().onPictureTaken(jpegData); } @Override public void onPictureTaken(CaptureSession session) { mAppController.getCameraAppUI().enableModeOptions(); } @Override public void onPictureSaved(Uri uri) { mAppController.notifyNewMedia(uri); } @Override public void onTakePictureProgress(float progress) { mUI.setPictureTakingProgress((int) (progress * 100)); } @Override public void onPictureTakingFailed() { mAppController.getFatalErrorHandler().onMediaStorageFailure(); } /** * Updates the preview transform matrix to adapt to the current preview * width, height, and orientation. */ public void updatePreviewTransform() { int width; int height; synchronized (mDimensionLock) { width = mScreenWidth; height = mScreenHeight; } updatePreviewTransform(width, height); } /** * @return Depending on whether we're in sticky-HDR mode or not, return the * proper callback to be used for when the HDR/HDR+ button is * pressed. */ private ButtonManager.ButtonCallback getHdrButtonCallback() { if (mStickyGcamCamera) { return new ButtonManager.ButtonCallback() { @Override public void onStateChanged(int state) { if (mPaused) { return; } if (state == ButtonManager.ON) { throw new IllegalStateException( "Can't leave hdr plus mode if switching to hdr plus mode."); } SettingsManager settingsManager = mAppController.getSettingsManager(); settingsManager.set(mAppController.getModuleScope(), Keys.KEY_REQUEST_RETURN_HDR_PLUS, false); switchToRegularCapture(); } }; } else { return new ButtonManager.ButtonCallback() { @Override public void onStateChanged(int hdrEnabled) { if (mPaused) { return; } // Only reload the camera if we are toggling HDR+. if (GcamHelper.hasGcamCapture(mAppController.getCameraFeatureConfig())) { mHdrPlusEnabled = hdrEnabled == 1; switchCamera(); } else { mHdrSceneEnabled = hdrEnabled == 1; } } }; } } /** * @return Depending on whether we're in sticky-HDR mode or not, this * returns the proper callback to be used for when the camera * (front/back switch) button is pressed. */ private ButtonManager.ButtonCallback getCameraCallback() { if (mStickyGcamCamera) { return new ButtonManager.ButtonCallback() { @Override public void onStateChanged(int state) { if (mPaused) { return; } // At the time this callback is fired, the camera id setting // has changed to the desired camera. SettingsManager settingsManager = mAppController.getSettingsManager(); if (Keys.isCameraBackFacing(settingsManager, mAppController.getModuleScope())) { throw new IllegalStateException( "Hdr plus should never be switching from front facing camera."); } // Switch to photo mode, but request a return to hdr plus on // switching to back camera again. settingsManager.set(mAppController.getModuleScope(), Keys.KEY_REQUEST_RETURN_HDR_PLUS, true); switchToRegularCapture(); } }; } else { return new ButtonManager.ButtonCallback() { @Override public void onStateChanged(int cameraId) { if (mPaused) { return; } ButtonManager buttonManager = mAppController.getButtonManager(); buttonManager.disableCameraButtonAndBlock(); // At the time this callback is fired, the camera id // has be set to the desired camera. mSettingsManager.set(mAppController.getModuleScope(), Keys.KEY_CAMERA_ID, cameraId); Log.d(TAG, "Start to switch camera. cameraId=" + cameraId); mCameraFacing = getFacingFromCameraId(cameraId); mShowErrorAndFinish = !updateCameraCharacteristics(); switchCamera(); } }; } } /** * Switches to PhotoModule to do regular photo captures. *
* TODO: Remove this once we use CaptureModule for photo taking. */ private void switchToRegularCapture() { // Turn off HDR+ before switching back to normal photo mode. SettingsManager settingsManager = mAppController.getSettingsManager(); settingsManager.set(SettingsManager.SCOPE_GLOBAL, Keys.KEY_CAMERA_HDR_PLUS, false); // Disable this button to prevent callbacks from this module from firing // while we are transitioning modules. ButtonManager buttonManager = mAppController.getButtonManager(); buttonManager.disableButtonClick(ButtonManager.BUTTON_HDR_PLUS); mAppController.getCameraAppUI().freezeScreenUntilPreviewReady(); mAppController.onModeSelected(mContext.getResources().getInteger( R.integer.camera_mode_photo)); buttonManager.enableButtonClick(ButtonManager.BUTTON_HDR_PLUS); } /** * Called when the preview started. Informs the app controller and queues a * transform update when the next preview frame arrives. */ private void onPreviewStarted() { if (mState == ModuleState.WATCH_FOR_NEXT_FRAME_AFTER_PREVIEW_STARTED) { mState = ModuleState.UPDATE_TRANSFORM_ON_NEXT_SURFACE_TEXTURE_UPDATE; } mAppController.onPreviewStarted(); } /** * Update the preview transform based on the new dimensions. Will not force * an update, if it's not necessary. */ private void updatePreviewTransform(int incomingWidth, int incomingHeight) { updatePreviewTransform(incomingWidth, incomingHeight, false); } /** * Returns whether it is necessary to apply device-specific fix for b/19271661 * on the AutoTransform Path, i.e. USE_AUTOTRANSFORM_UI_LAYOUT == true * * @return whether to apply workaround fix for b/19271661 */ private boolean requiresNexus4SpecificFixFor16By9Previews() { return USE_AUTOTRANSFORM_UI_LAYOUT && ApiHelper.IS_NEXUS_4 && is16by9AspectRatio(mPictureSize); } /*** * Update the preview transform based on the new dimensions. TODO: Make work * with all: aspect ratios/resolutions x screens/cameras. */ private void updatePreviewTransform(int incomingWidth, int incomingHeight, boolean forceUpdate) { Log.d(TAG, "updatePreviewTransform: " + incomingWidth + " x " + incomingHeight); synchronized (mDimensionLock) { int incomingRotation = CameraUtil.getDisplayRotation(); // Check for an actual change: if (mScreenHeight == incomingHeight && mScreenWidth == incomingWidth && incomingRotation == mDisplayRotation && !forceUpdate) { return; } // Update display rotation and dimensions mDisplayRotation = incomingRotation; mScreenWidth = incomingWidth; mScreenHeight = incomingHeight; updatePreviewBufferDimension(); // Assumptions: // - Aspect ratio for the sensor buffers is in landscape // orientation, // - Dimensions of buffers received are rotated to the natural // device orientation. // - The contents of each buffer are rotated by the inverse of // the display rotation. // - Surface scales the buffer to fit the current view bounds. // Get natural orientation and buffer dimensions if(USE_AUTOTRANSFORM_UI_LAYOUT) { // Use PhotoUI-based AutoTransformation Interface if (mPreviewBufferWidth != 0 && mPreviewBufferHeight != 0) { if (requiresNexus4SpecificFixFor16By9Previews()) { // Force preview size to be 16:9, even though surface is 4:3 // Surface content is assumed to be 16:9. mAppController.updatePreviewAspectRatio(16.f / 9.f); } else { mAppController.updatePreviewAspectRatio( mPreviewBufferWidth / (float) mPreviewBufferHeight); } } } else { Matrix transformMatrix = mPreviewTransformCalculator.toTransformMatrix( new Size(mScreenWidth, mScreenHeight), new Size(mPreviewBufferWidth, mPreviewBufferHeight)); mAppController.updatePreviewTransform(transformMatrix); } } } /** * Calculates whether a picture size is 16:9 ratio, regardless of its * orientation. * * @param size the size of the picture to be considered * @return true, if the picture is 16:9; false if it's invalid or size is null */ private boolean is16by9AspectRatio(Size size) { if (size == null || size.getWidth() == 0 || size.getHeight() == 0) { return false; } // Normalize aspect ratio to be greater than 1. final float aspectRatio = (size.getHeight() > size.getWidth()) ? (size.getHeight() / (float) size.getWidth()) : (size.getWidth() / (float) size.getHeight()); return Math.abs(aspectRatio - (16.f / 9.f)) < 0.001f; } /** * Based on the current picture size, selects the best preview dimension and * stores it in {@link #mPreviewBufferWidth} and * {@link #mPreviewBufferHeight}. */ private void updatePreviewBufferDimension() { if (mCamera == null) { return; } Size previewBufferSize = mCamera.pickPreviewSize(mPictureSize, mContext); mPreviewBufferWidth = previewBufferSize.getWidth(); mPreviewBufferHeight = previewBufferSize.getHeight(); // Workaround for N4 TextureView/HAL issues b/19271661 for 16:9 preview // streams. if (requiresNexus4SpecificFixFor16By9Previews()) { // Override the preview selection logic to the largest N4 4:3 // preview size but pass in 16:9 aspect ratio in // UpdatePreviewAspectRatio later. mPreviewBufferWidth = 1280; mPreviewBufferHeight = 960; } updatePreviewBufferSize(); } /** * Open camera and start the preview. */ private void openCameraAndStartPreview() { Profile guard = mProfiler.create("CaptureModule.openCameraAndStartPreview()").start(); try { // TODO Given the current design, we cannot guarantee that one of // CaptureReadyCallback.onSetupFailed or onReadyForCapture will // be called (see below), so it's possible that // mCameraOpenCloseLock.release() is never called under extremely // rare cases. If we leak the lock, this timeout ensures that we at // least crash so we don't deadlock the app. if (!mCameraOpenCloseLock.tryAcquire(CAMERA_OPEN_CLOSE_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS)) { throw new RuntimeException("Time out waiting to acquire camera-open lock."); } } catch (InterruptedException e) { throw new RuntimeException("Interrupted while waiting to acquire camera-open lock.", e); } guard.mark("Acquired mCameraOpenCloseLock"); if (mOneCameraOpener == null) { Log.e(TAG, "no available OneCameraManager, showing error dialog"); mCameraOpenCloseLock.release(); mAppController.getFatalErrorHandler().onGenericCameraAccessFailure(); guard.stop("No OneCameraManager"); return; } if (mCamera != null) { // If the camera is already open, do nothing. Log.d(TAG, "Camera already open, not re-opening."); mCameraOpenCloseLock.release(); guard.stop("Camera is already open"); return; } // Derive objects necessary for camera creation. MainThread mainThread = MainThread.create(); ImageRotationCalculator imageRotationCalculator = ImageRotationCalculatorImpl .from(mAppController.getOrientationManager(), mCameraCharacteristics); // Only enable GCam on the back camera boolean useHdr = mHdrPlusEnabled && mCameraFacing == Facing.BACK; CameraId cameraId = mOneCameraManager.findFirstCameraFacing(mCameraFacing); final String settingScope = SettingsManager.getCameraSettingScope(cameraId.getValue()); OneCameraCaptureSetting captureSetting; // Read the preferred picture size from the setting. try { mPictureSize = mAppController.getResolutionSetting().getPictureSize( cameraId, mCameraFacing); captureSetting = OneCameraCaptureSetting.create(mPictureSize, mSettingsManager, getHardwareSpec(), settingScope, useHdr); } catch (OneCameraAccessException ex) { mAppController.getFatalErrorHandler().onGenericCameraAccessFailure(); return; } mOneCameraOpener.open(cameraId, captureSetting, mCameraHandler, mainThread, imageRotationCalculator, mBurstController, mSoundPlayer, new OpenCallback() { @Override public void onFailure() { Log.e(TAG, "Could not open camera."); // Sometimes the failure happens due to the controller // being in paused state but mCamera is already // initialized. In these cases we just need to close the // camera device without showing the error dialog. // Application will properly reopen the camera on the next // resume operation (b/21025113). boolean isControllerPaused = mAppController.isPaused(); if (mCamera != null) { mCamera.close(); } mCamera = null; mCameraOpenCloseLock.release(); if (!isControllerPaused) { mAppController.getFatalErrorHandler().onCameraOpenFailure(); } } @Override public void onCameraClosed() { mCamera = null; mCameraOpenCloseLock.release(); } @Override public void onCameraOpened(@Nonnull final OneCamera camera) { Log.d(TAG, "onCameraOpened: " + camera); mCamera = camera; // A race condition exists where the camera may be in the process // of opening (blocked), but the activity gets destroyed. If the // preview is initialized or callbacks are invoked on a destroyed // activity, bad things can happen. if (mAppController.isPaused()) { onFailure(); return; } // When camera is opened, the zoom is implicitly reset to 1.0f mZoomValue = 1.0f; updatePreviewBufferDimension(); // If the surface texture is not destroyed, it may have // the last frame lingering. We need to hold off setting // transform until preview is started. updatePreviewBufferSize(); mState = ModuleState.WATCH_FOR_NEXT_FRAME_AFTER_PREVIEW_STARTED; Log.d(TAG, "starting preview ..."); // TODO: make mFocusController final and remove null // check. if (mFocusController != null) { camera.setFocusDistanceListener(mFocusController); } mMainThread.execute(new Runnable() { @Override public void run() { mAppController.getCameraAppUI().onChangeCamera(); mAppController.getButtonManager().enableCameraButton(); } }); // TODO: Consider rolling these two calls into one. camera.startPreview(new Surface(getPreviewSurfaceTexture()), new CaptureReadyCallback() { @Override public void onSetupFailed() { // We must release this lock here, // before posting to the main handler // since we may be blocked in pause(), // getting ready to close the camera. mCameraOpenCloseLock.release(); Log.e(TAG, "Could not set up preview."); mMainThread.execute(new Runnable() { @Override public void run() { if (mCamera == null) { Log.d(TAG, "Camera closed, aborting."); return; } mCamera.close(); mCamera = null; // TODO: Show an error message // and exit. } }); } @Override public void onReadyForCapture() { // We must release this lock here, // before posting to the main handler // since we may be blocked in pause(), // getting ready to close the camera. mCameraOpenCloseLock.release(); mMainThread.execute(new Runnable() { @Override public void run() { Log.d(TAG, "Ready for capture."); if (mCamera == null) { Log.d(TAG, "Camera closed, aborting."); return; } onPreviewStarted(); // May be overridden by // subsequent call to // onReadyStateChanged(). onReadyStateChanged(true); mCamera.setReadyStateChangedListener( CaptureModule.this); // Enable zooming after preview // has started. mUI.initializeZoom(mCamera.getMaxZoom()); mCamera.setFocusStateListener(CaptureModule.this); } }); } }); } }, mAppController.getFatalErrorHandler()); guard.stop("mOneCameraOpener.open()"); } private void closeCamera() { Profile profile = mProfiler.create("CaptureModule.closeCamera()").start(); try { mCameraOpenCloseLock.acquire(); } catch (InterruptedException e) { throw new RuntimeException("Interrupted while waiting to acquire camera-open lock.", e); } profile.mark("mCameraOpenCloseLock.acquire()"); try { if (mCamera != null) { mCamera.close(); profile.mark("mCamera.close()"); mCamera.setFocusStateListener(null); mCamera = null; } } finally { mCameraOpenCloseLock.release(); } profile.stop(); } /** * Re-initialize the camera if e.g. the HDR mode or facing property changed. */ private void switchCamera() { if (mShowErrorAndFinish) { return; } if (mPaused) { return; } cancelCountDown(); mAppController.freezeScreenUntilPreviewReady(); initSurfaceTextureConsumer(); } /** * Returns which way around the camera is facing, based on it's ID. *
* TODO: This needs to change so that we store the direction directly in the * settings, rather than a Camera ID. */ private static Facing getFacingFromCameraId(int cameraId) { return cameraId == 1 ? Facing.FRONT : Facing.BACK; } private void resetTextureBufferSize() { // According to the documentation for // SurfaceTexture.setDefaultBufferSize, // photo and video based image producers (presumably only Camera 1 api), // override this buffer size. Any module that uses egl to render to a // SurfaceTexture must have these buffer sizes reset manually. Otherwise // the SurfaceTexture cannot be transformed by matrix set on the // TextureView. updatePreviewBufferSize(); } }