field public static final int CAMERA_DISABLED = 1; // 0x1
field public static final int CAMERA_DISCONNECTED = 2; // 0x2
field public static final int CAMERA_ERROR = 3; // 0x3
+ field public static final int CAMERA_IN_USE = 4; // 0x4
+ field public static final int MAX_CAMERAS_IN_USE = 5; // 0x5
}
public abstract class CameraCaptureSession implements java.lang.AutoCloseable {
method public java.lang.String[] getCameraIdList() throws android.hardware.camera2.CameraAccessException;
method public void openCamera(java.lang.String, android.hardware.camera2.CameraDevice.StateCallback, android.os.Handler) throws android.hardware.camera2.CameraAccessException;
method public void registerAvailabilityCallback(android.hardware.camera2.CameraManager.AvailabilityCallback, android.os.Handler);
+ method public void registerTorchCallback(android.hardware.camera2.CameraManager.TorchCallback, android.os.Handler);
+ method public void setTorchMode(java.lang.String, boolean) throws android.hardware.camera2.CameraAccessException;
method public void unregisterAvailabilityCallback(android.hardware.camera2.CameraManager.AvailabilityCallback);
+ method public void unregisterTorchCallback(android.hardware.camera2.CameraManager.TorchCallback);
}
public static abstract class CameraManager.AvailabilityCallback {
method public void onCameraUnavailable(java.lang.String);
}
+ public static abstract class CameraManager.TorchCallback {
+ ctor public CameraManager.TorchCallback();
+ method public void onTorchModeAvailable(java.lang.String);
+ method public void onTorchModeChanged(java.lang.String, boolean);
+ method public void onTorchModeUnavailable(java.lang.String);
+ }
+
public abstract class CameraMetadata {
method public java.util.List<TKey> getKeys();
field public static final int COLOR_CORRECTION_ABERRATION_MODE_FAST = 1; // 0x1
field public static final int CAMERA_DISABLED = 1; // 0x1
field public static final int CAMERA_DISCONNECTED = 2; // 0x2
field public static final int CAMERA_ERROR = 3; // 0x3
+ field public static final int CAMERA_IN_USE = 4; // 0x4
+ field public static final int MAX_CAMERAS_IN_USE = 5; // 0x5
}
public abstract class CameraCaptureSession implements java.lang.AutoCloseable {
method public java.lang.String[] getCameraIdList() throws android.hardware.camera2.CameraAccessException;
method public void openCamera(java.lang.String, android.hardware.camera2.CameraDevice.StateCallback, android.os.Handler) throws android.hardware.camera2.CameraAccessException;
method public void registerAvailabilityCallback(android.hardware.camera2.CameraManager.AvailabilityCallback, android.os.Handler);
+ method public void registerTorchCallback(android.hardware.camera2.CameraManager.TorchCallback, android.os.Handler);
+ method public void setTorchMode(java.lang.String, boolean) throws android.hardware.camera2.CameraAccessException;
method public void unregisterAvailabilityCallback(android.hardware.camera2.CameraManager.AvailabilityCallback);
+ method public void unregisterTorchCallback(android.hardware.camera2.CameraManager.TorchCallback);
}
public static abstract class CameraManager.AvailabilityCallback {
method public void onCameraUnavailable(java.lang.String);
}
+ public static abstract class CameraManager.TorchCallback {
+ ctor public CameraManager.TorchCallback();
+ method public void onTorchModeAvailable(java.lang.String);
+ method public void onTorchModeChanged(java.lang.String, boolean);
+ method public void onTorchModeUnavailable(java.lang.String);
+ }
+
public abstract class CameraMetadata {
method public java.util.List<TKey> getKeys();
field public static final int COLOR_CORRECTION_ABERRATION_MODE_FAST = 1; // 0x1
* of the state of individual CameraManager instances.</p>
*
* @param callback the new callback to send camera availability notices to
- * @param handler The handler on which the callback should be invoked, or
- * {@code null} to use the current thread's {@link android.os.Looper looper}.
+ * @param handler The handler on which the callback should be invoked, or {@code null} to use
+ * the current thread's {@link android.os.Looper looper}.
+ *
+ * @throws IllegalArgumentException if the handler is {@code null} but the current thread has
+ * no looper.
*/
public void registerAvailabilityCallback(AvailabilityCallback callback, Handler handler) {
if (handler == null) {
}
/**
+ * Register a callback to be notified about torch mode status.
+ *
+ * <p>Registering the same callback again will replace the handler with the
+ * new one provided.</p>
+ *
+ * <p>The first time a callback is registered, it is immediately called
+ * with the torch mode status of all currently known camera devices.</p>
+ *
+ * <p>Since this callback will be registered with the camera service, remember to unregister it
+ * once it is no longer needed; otherwise the callback will continue to receive events
+ * indefinitely and it may prevent other resources from being released. Specifically, the
+ * callbacks will be invoked independently of the general activity lifecycle and independently
+ * of the state of individual CameraManager instances.</p>
+ *
+ * @param callback The new callback to send torch mode status to
+ * @param handler The handler on which the callback should be invoked, or {@code null} to use
+ * the current thread's {@link android.os.Looper looper}.
+ *
+ * @throws IllegalArgumentException if the handler is {@code null} but the current thread has
+ * no looper.
+ */
+ public void registerTorchCallback(TorchCallback callback, Handler handler) {
+ }
+
+ /**
+ * Remove a previously-added callback; the callback will no longer receive torch mode status
+ * callbacks.
+ *
+ * <p>Removing a callback that isn't registered has no effect.</p>
+ *
+ * @param callback The callback to remove from the notification list
+ */
+ public void unregisterTorchCallback(TorchCallback callback) {
+ }
+
+ /**
* <p>Query the capabilities of a camera device. These capabilities are
* immutable for a given camera.</p>
*
}
/**
+ * Set the flash unit's torch mode of the camera of the given ID without opening the camera
+ * device.
+ *
+ * <p>Use {@link #getCameraIdList} to get the list of available camera devices and use
+ * {@link #getCameraCharacteristics} to check whether the camera device has a flash unit.
+ * Note that even if a camera device has a flash unit, turning on the torch mode may fail
+ * if the camera device or other camera resources needed to turn on the torch mode are in use.
+ * </p>
+ *
+ * <p> If {@link #setTorchMode} is called to turn on or off the torch mode successfully,
+ * {@link CameraManager.TorchCallback#onTorchModeChanged} will be invoked.
+ * However, even if turning on the torch mode is successful, the application does not have the
+ * exclusive ownership of the flash unit or the camera device. The torch mode will be turned
+ * off and becomes unavailable when the camera device that the flash unit belongs to becomes
+ * unavailable ({@link CameraManager.TorchCallback#onTorchModeAvailable} will be
+ * invoked) or when other camera resources to keep the torch on become unavailable (
+ * {@link CameraManager.TorchCallback#onTorchModeUnavailable} will be invoked). Also,
+ * other applications are free to call {@link #setTorchMode} to turn off the torch mode (
+ * {@link CameraManager.TorchCallback#onTorchModeChanged} will be invoked).
+ *
+ * @param cameraId
+ * The unique identifier of the camera device that the flash unit belongs to.
+ * @param enabled
+ * The desired state of the torch mode for the target camera device. Set to
+ * {@code true} to turn on the torch mode. Set to {@code false} to turn off the
+ * torch mode.
+ *
+ * @throws CameraAccessException if it failed to access the flash unit.
+ * {@link CameraAccessException#CAMERA_IN_USE} will be thrown if the camera device
+ * is in use. {@link CameraAccessException#MAX_CAMERAS_IN_USE} will be thrown if
+ * other camera resources needed to turn on the torch mode are in use.
+ *
+ * @throws IllegalArgumentException if cameraId was null, cameraId doesn't match any currently
+ * or previously available camera device, or the camera device doesn't have a
+ * flash unit.
+ */
+ public void setTorchMode(String cameraId, boolean enabled) throws CameraAccessException {
+
+ }
+
+ /**
* A callback for camera devices becoming available or
* unavailable to open.
*
}
/**
+ * A callback for camera flash torch modes becoming available, unavailable, enabled, or
+ * disabled.
+ *
+ * <p>The torch mode becomes available when the camera device it belongs to is no longer in use
+ * and other camera resources it needs are no longer busy. It becomes unavailable when the
+ * camera device it belongs to becomes unavailable or other camera resouces it needs become
+ * busy due to other higher priority camera activities. The torch mode changes when an
+ * application calls {@link #setTorchMode} successfully.
+ *
+ * <p>Extend this callback and pass an instance of the subclass to
+ * {@link CameraManager#registerTorchCallback} to be notified of such status changes.
+ * </p>
+ *
+ * @see registerTorchCallback
+ */
+ public static abstract class TorchCallback {
+ /**
+ * The torch mode of a camera has become available to use.
+ *
+ * <p>The default implementation of this method does nothing.</p>
+ *
+ * @param cameraId The unique identifier of the camera whose torch mode has become
+ * available.
+ */
+ public void onTorchModeAvailable(String cameraId) {
+ // default empty implementation
+ }
+
+ /**
+ * A previously-available torch mode of a camera has become unavailable.
+ *
+ * <p>If torch mode was previously turned on by calling {@link #setTorchMode}, it will be
+ * turned off before {@link CameraManager.TorchCallback#onTorchModeUnavailable} is
+ * invoked. {@link #setTorchMode} will fail until the flash unit becomes available again.
+ * </p>
+ *
+ * <p>The default implementation of this method does nothing.</p>
+ *
+ * @param cameraId The unique identifier of the camera whose torch mode has become
+ * unavailable.
+ */
+ public void onTorchModeUnavailable(String cameraId) {
+ // default empty implementation
+ }
+
+ /**
+ * Torch mode of a camera has been turned on or off through {@link #setTorchMode}.
+ *
+ * <p>The default implementation of this method does nothing.</p>
+ *
+ * @param cameraId The unique identifier of the camera whose torch mode has been changed.
+ *
+ * @param enabled The state that the torch mode of the camera has been changed to.
+ * {@code true} when the torch mode has been turned on. {@code false} when
+ * the torch mode has been turned off.
+ */
+ public void onTorchModeChanged(String cameraId, boolean enabled) {
+ // default empty implementation
+ }
+ }
+
+ /**
* Return or create the list of currently connected camera devices.
*
* <p>In case of errors connecting to the camera service, will return an empty list.</p>
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