diff options
| -rw-r--r-- | include/system/camera.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/system/camera.h b/include/system/camera.h index 62167cf8..b8389b1e 100644 --- a/include/system/camera.h +++ b/include/system/camera.h @@ -151,11 +151,30 @@ enum { * arg1 = 0 will disable, while passing arg1 = 1 will enable the callback. */ CAMERA_CMD_ENABLE_FOCUS_MOVE_MSG = 8, + + /** + * Ping camera service to see if camera hardware is released. + * + * When any camera method returns error, the client can use ping command + * to see if the camera has been taken away by other clients. If the result + * is NO_ERROR, it means the camera hardware is not released. If the result + * is not NO_ERROR, the camera has been released and the existing client + * can silently finish itself or show a dialog. + */ + CAMERA_CMD_PING = 9, }; /** camera fatal errors */ enum { CAMERA_ERROR_UNKNOWN = 1, + /** + * Camera was released because another client has connected to the camera. + * The original client should call Camera::disconnect immediately after + * getting this notification. Otherwise, the camera will be released by + * camera service in a short time. The client should not call any method + * (except disconnect and sending CAMERA_CMD_PING) after getting this. + */ + CAMERA_ERROR_RELEASED = 2, CAMERA_ERROR_SERVER_DIED = 100 }; |