--- /dev/null
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SYSTEM_CORE_INCLUDE_ANDROID_CAMERA_H
+#define SYSTEM_CORE_INCLUDE_ANDROID_CAMERA_H
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+#include <cutils/native_handle.h>
+#include <hardware/hardware.h>
+#include <hardware/gralloc.h>
+
+__BEGIN_DECLS
+
+/**
+ * A set of bit masks for specifying how the received preview frames are
+ * handled before the previewCallback() call.
+ *
+ * The least significant 3 bits of an "int" value are used for this purpose:
+ *
+ * ..... 0 0 0
+ * ^ ^ ^
+ * | | |---------> determine whether the callback is enabled or not
+ * | |-----------> determine whether the callback is one-shot or not
+ * |-------------> determine whether the frame is copied out or not
+ *
+ * WARNING: When a frame is sent directly without copying, it is the frame
+ * receiver's responsiblity to make sure that the frame data won't get
+ * corrupted by subsequent preview frames filled by the camera. This flag is
+ * recommended only when copying out data brings significant performance price
+ * and the handling/processing of the received frame data is always faster than
+ * the preview frame rate so that data corruption won't occur.
+ *
+ * For instance,
+ * 1. 0x00 disables the callback. In this case, copy out and one shot bits
+ * are ignored.
+ * 2. 0x01 enables a callback without copying out the received frames. A
+ * typical use case is the Camcorder application to avoid making costly
+ * frame copies.
+ * 3. 0x05 is enabling a callback with frame copied out repeatedly. A typical
+ * use case is the Camera application.
+ * 4. 0x07 is enabling a callback with frame copied out only once. A typical
+ * use case is the Barcode scanner application.
+ */
+
+enum {
+ CAMERA_FRAME_CALLBACK_FLAG_ENABLE_MASK = 0x01,
+ CAMERA_FRAME_CALLBACK_FLAG_ONE_SHOT_MASK = 0x02,
+ CAMERA_FRAME_CALLBACK_FLAG_COPY_OUT_MASK = 0x04,
+ /** Typical use cases */
+ CAMERA_FRAME_CALLBACK_FLAG_NOOP = 0x00,
+ CAMERA_FRAME_CALLBACK_FLAG_CAMCORDER = 0x01,
+ CAMERA_FRAME_CALLBACK_FLAG_CAMERA = 0x05,
+ CAMERA_FRAME_CALLBACK_FLAG_BARCODE_SCANNER = 0x07
+};
+
+/** msgType in notifyCallback and dataCallback functions */
+enum {
+ CAMERA_MSG_ERROR = 0x0001, // notifyCallback
+ CAMERA_MSG_SHUTTER = 0x0002, // notifyCallback
+ CAMERA_MSG_FOCUS = 0x0004, // notifyCallback
+ CAMERA_MSG_ZOOM = 0x0008, // notifyCallback
+ CAMERA_MSG_PREVIEW_FRAME = 0x0010, // dataCallback
+ CAMERA_MSG_VIDEO_FRAME = 0x0020, // data_timestamp_callback
+ CAMERA_MSG_POSTVIEW_FRAME = 0x0040, // dataCallback
+ CAMERA_MSG_RAW_IMAGE = 0x0080, // dataCallback
+ CAMERA_MSG_COMPRESSED_IMAGE = 0x0100, // dataCallback
+ CAMERA_MSG_RAW_IMAGE_NOTIFY = 0x0200, // dataCallback
+ // Preview frame metadata. This can be combined with
+ // CAMERA_MSG_PREVIEW_FRAME in dataCallback. For example, the apps can
+ // request FRAME and METADATA. Or the apps can request only FRAME or only
+ // METADATA.
+ CAMERA_MSG_PREVIEW_METADATA = 0x0400, // dataCallback
+ // Notify on autofocus start and stop. This is useful in continuous
+ // autofocus - FOCUS_MODE_CONTINUOUS_VIDEO and FOCUS_MODE_CONTINUOUS_PICTURE.
+ CAMERA_MSG_FOCUS_MOVE = 0x0800, // notifyCallback
+ CAMERA_MSG_ALL_MSGS = 0xFFFF
+};
+
+/** cmdType in sendCommand functions */
+enum {
+ CAMERA_CMD_START_SMOOTH_ZOOM = 1,
+ CAMERA_CMD_STOP_SMOOTH_ZOOM = 2,
+
+ /**
+ * Set the clockwise rotation of preview display (setPreviewDisplay) in
+ * degrees. This affects the preview frames and the picture displayed after
+ * snapshot. This method is useful for portrait mode applications. Note
+ * that preview display of front-facing cameras is flipped horizontally
+ * before the rotation, that is, the image is reflected along the central
+ * vertical axis of the camera sensor. So the users can see themselves as
+ * looking into a mirror.
+ *
+ * This does not affect the order of byte array of
+ * CAMERA_MSG_PREVIEW_FRAME, CAMERA_MSG_VIDEO_FRAME,
+ * CAMERA_MSG_POSTVIEW_FRAME, CAMERA_MSG_RAW_IMAGE, or
+ * CAMERA_MSG_COMPRESSED_IMAGE. This is allowed to be set during preview
+ * since API level 14.
+ */
+ CAMERA_CMD_SET_DISPLAY_ORIENTATION = 3,
+
+ /**
+ * cmdType to disable/enable shutter sound. In sendCommand passing arg1 =
+ * 0 will disable, while passing arg1 = 1 will enable the shutter sound.
+ */
+ CAMERA_CMD_ENABLE_SHUTTER_SOUND = 4,
+
+ /* cmdType to play recording sound */
+ CAMERA_CMD_PLAY_RECORDING_SOUND = 5,
+
+ /**
+ * Start the face detection. This should be called after preview is started.
+ * The camera will notify the listener of CAMERA_MSG_FACE and the detected
+ * faces in the preview frame. The detected faces may be the same as the
+ * previous ones. Apps should call CAMERA_CMD_STOP_FACE_DETECTION to stop
+ * the face detection. This method is supported if CameraParameters
+ * KEY_MAX_NUM_HW_DETECTED_FACES or KEY_MAX_NUM_SW_DETECTED_FACES is
+ * bigger than 0. Hardware and software face detection should not be running
+ * at the same time. If the face detection has started, apps should not send
+ * this again.
+ *
+ * In hardware face detection mode, CameraParameters KEY_WHITE_BALANCE,
+ * KEY_FOCUS_AREAS and KEY_METERING_AREAS have no effect.
+ *
+ * arg1 is the face detection type. It can be CAMERA_FACE_DETECTION_HW or
+ * CAMERA_FACE_DETECTION_SW. If the type of face detection requested is not
+ * supported, the HAL must return BAD_VALUE.
+ */
+ CAMERA_CMD_START_FACE_DETECTION = 6,
+
+ /**
+ * Stop the face detection.
+ */
+ CAMERA_CMD_STOP_FACE_DETECTION = 7,
+
+ /**
+ * Enable/disable focus move callback (CAMERA_MSG_FOCUS_MOVE). Passing
+ * 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 OK, it means the camera hardware is not released. If the result
+ * is not OK, the camera has been released and the existing client
+ * can silently finish itself or show a dialog.
+ */
+ CAMERA_CMD_PING = 9,
+
+ /**
+ * Configure the number of video buffers used for recording. The intended
+ * video buffer count for recording is passed as arg1, which must be
+ * greater than 0. This command must be sent before recording is started.
+ * This command returns INVALID_OPERATION error if it is sent after video
+ * recording is started, or the command is not supported at all. This
+ * command also returns a BAD_VALUE error if the intended video buffer
+ * count is non-positive or too big to be realized.
+ */
+ CAMERA_CMD_SET_VIDEO_BUFFER_COUNT = 10,
+
+ /**
+ * Configure an explicit format to use for video recording metadata mode.
+ * This can be used to switch the format from the
+ * default IMPLEMENTATION_DEFINED gralloc format to some other
+ * device-supported format, and the default dataspace from the BT_709 color
+ * space to some other device-supported dataspace. arg1 is the HAL pixel
+ * format, and arg2 is the HAL dataSpace. This command returns
+ * INVALID_OPERATION error if it is sent after video recording is started,
+ * or the command is not supported at all.
+ *
+ * If the gralloc format is set to a format other than
+ * IMPLEMENTATION_DEFINED, then HALv3 devices will use gralloc usage flags
+ * of SW_READ_OFTEN.
+ */
+ CAMERA_CMD_SET_VIDEO_FORMAT = 11
+};
+
+/** 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 was released because device policy change or the client application
+ * is going to background. The 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_DISABLED = 3,
+ CAMERA_ERROR_SERVER_DIED = 100
+};
+
+enum {
+ /** The facing of the camera is opposite to that of the screen. */
+ CAMERA_FACING_BACK = 0,
+ /** The facing of the camera is the same as that of the screen. */
+ CAMERA_FACING_FRONT = 1,
+ /**
+ * The facing of the camera is not fixed relative to the screen.
+ * The cameras with this facing are external cameras, e.g. USB cameras.
+ */
+ CAMERA_FACING_EXTERNAL = 2
+};
+
+enum {
+ /** Hardware face detection. It does not use much CPU. */
+ CAMERA_FACE_DETECTION_HW = 0,
+ /**
+ * Software face detection. It uses some CPU. Applications must use
+ * Camera.setPreviewTexture for preview in this mode.
+ */
+ CAMERA_FACE_DETECTION_SW = 1
+};
+
+/**
+ * The information of a face from camera face detection.
+ */
+typedef struct camera_face {
+ /**
+ * Bounds of the face [left, top, right, bottom]. (-1000, -1000) represents
+ * the top-left of the camera field of view, and (1000, 1000) represents the
+ * bottom-right of the field of view. The width and height cannot be 0 or
+ * negative. This is supported by both hardware and software face detection.
+ *
+ * The direction is relative to the sensor orientation, that is, what the
+ * sensor sees. The direction is not affected by the rotation or mirroring
+ * of CAMERA_CMD_SET_DISPLAY_ORIENTATION.
+ */
+ int32_t rect[4];
+
+ /**
+ * The confidence level of the face. The range is 1 to 100. 100 is the
+ * highest confidence. This is supported by both hardware and software
+ * face detection.
+ */
+ int32_t score;
+
+ /**
+ * An unique id per face while the face is visible to the tracker. If
+ * the face leaves the field-of-view and comes back, it will get a new
+ * id. If the value is 0, id is not supported.
+ */
+ int32_t id;
+
+ /**
+ * The coordinates of the center of the left eye. The range is -1000 to
+ * 1000. -2000, -2000 if this is not supported.
+ */
+ int32_t left_eye[2];
+
+ /**
+ * The coordinates of the center of the right eye. The range is -1000 to
+ * 1000. -2000, -2000 if this is not supported.
+ */
+ int32_t right_eye[2];
+
+ /**
+ * The coordinates of the center of the mouth. The range is -1000 to 1000.
+ * -2000, -2000 if this is not supported.
+ */
+ int32_t mouth[2];
+
+} camera_face_t;
+
+/**
+ * The metadata of the frame data.
+ */
+typedef struct camera_frame_metadata {
+ /**
+ * The number of detected faces in the frame.
+ */
+ int32_t number_of_faces;
+
+ /**
+ * An array of the detected faces. The length is number_of_faces.
+ */
+ camera_face_t *faces;
+} camera_frame_metadata_t;
+
+__END_DECLS
+
+#endif /* SYSTEM_CORE_INCLUDE_ANDROID_CAMERA_H */
projects / mesa.git / blobdiff