/* Copyright (c) 2012-2014, The Linux Foundataion. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of The Linux Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef __QCAMERA_STATEMACHINE_H__ #define __QCAMERA_STATEMACHINE_H__ #include #include extern "C" { #include } #include "QCameraQueue.h" #include "QCameraChannel.h" namespace qcamera { class QCamera2HardwareInterface; typedef enum { /*******BEGIN OF: API EVT*********/ QCAMERA_SM_EVT_SET_PREVIEW_WINDOW = 1, // set preview window QCAMERA_SM_EVT_SET_CALLBACKS, // set callbacks QCAMERA_SM_EVT_ENABLE_MSG_TYPE, // enable msg type QCAMERA_SM_EVT_DISABLE_MSG_TYPE, // disable msg type QCAMERA_SM_EVT_MSG_TYPE_ENABLED, // query certain msg type is enabled QCAMERA_SM_EVT_SET_PARAMS, // set parameters QCAMERA_SM_EVT_GET_PARAMS, // get parameters QCAMERA_SM_EVT_PUT_PARAMS, // put parameters, release param buf QCAMERA_SM_EVT_START_PREVIEW, // start preview (zsl, camera mode, camcorder mode) QCAMERA_SM_EVT_START_NODISPLAY_PREVIEW, // start no display preview (zsl, camera mode, camcorder mode) QCAMERA_SM_EVT_STOP_PREVIEW, // stop preview (zsl, camera mode, camcorder mode) QCAMERA_SM_EVT_PREVIEW_ENABLED, // query if preview is running QCAMERA_SM_EVT_STORE_METADATA_IN_BUFS, // request to store meta data in video buffers QCAMERA_SM_EVT_START_RECORDING, // start recording QCAMERA_SM_EVT_STOP_RECORDING, // stop recording QCAMERA_SM_EVT_RECORDING_ENABLED, // query if recording is running QCAMERA_SM_EVT_RELEASE_RECORIDNG_FRAME, // release recording frame QCAMERA_SM_EVT_PREPARE_SNAPSHOT, // prepare snapshot in case LED needs to be flashed QCAMERA_SM_EVT_TAKE_PICTURE, // take picutre (zsl, regualr capture, live snapshot QCAMERA_SM_EVT_CANCEL_PICTURE, // cancel picture QCAMERA_SM_EVT_START_AUTO_FOCUS, // start auto focus QCAMERA_SM_EVT_STOP_AUTO_FOCUS, // stop auto focus QCAMERA_SM_EVT_SEND_COMMAND, // send command QCAMERA_SM_EVT_RELEASE, // release camera resource QCAMERA_SM_EVT_DUMP, // dump QCAMERA_SM_EVT_REG_FACE_IMAGE, // register a face image in imaging lib /*******END OF: API EVT*********/ QCAMERA_SM_EVT_EVT_INTERNAL, // internal evt notify QCAMERA_SM_EVT_EVT_NOTIFY, // evt notify from server QCAMERA_SM_EVT_JPEG_EVT_NOTIFY, // evt notify from jpeg QCAMERA_SM_EVT_SNAPSHOT_DONE, // internal evt that snapshot is done QCAMERA_SM_EVT_THERMAL_NOTIFY, // evt notify from thermal daemon QCAMERA_SM_EVT_STOP_CAPTURE_CHANNEL, // stop capture channel QCAMERA_SM_EVT_MAX } qcamera_sm_evt_enum_t; typedef enum { QCAMERA_API_RESULT_TYPE_DEF, // default type, no additional info QCAMERA_API_RESULT_TYPE_ENABLE_FLAG, // msg_enabled, preview_enabled, recording_enabled QCAMERA_API_RESULT_TYPE_PARAMS, // returned parameters in string QCAMERA_API_RESULT_TYPE_HANDLE, // returned handle in int QCAMERA_API_RESULT_TYPE_MAX } qcamera_api_result_type_t; typedef struct { int32_t status; // api call status qcamera_sm_evt_enum_t request_api; // api evt requested qcamera_api_result_type_t result_type; // result type union { int enabled; // result_type == QCAMERA_API_RESULT_TYPE_ENABLE_FLAG char *params; // result_type == QCAMERA_API_RESULT_TYPE_PARAMS int handle; // result_type ==QCAMERA_API_RESULT_TYPE_HANDLE }; } qcamera_api_result_t; typedef struct api_result_list { qcamera_api_result_t result; struct api_result_list *next; }api_result_list; // definition for payload type of setting callback typedef struct { camera_notify_callback notify_cb; camera_data_callback data_cb; camera_data_timestamp_callback data_cb_timestamp; camera_request_memory get_memory; void *user; } qcamera_sm_evt_setcb_payload_t; // definition for payload type of sending command typedef struct { int32_t cmd; int32_t arg1; int32_t arg2; } qcamera_sm_evt_command_payload_t; // definition for payload type of sending command typedef struct { void *img_ptr; cam_pp_offline_src_config_t *config; } qcamera_sm_evt_reg_face_payload_t; typedef enum { QCAMERA_INTERNAL_EVT_FOCUS_UPDATE, // focus updating result QCAMERA_INTERNAL_EVT_PREP_SNAPSHOT_DONE, // prepare snapshot done QCAMERA_INTERNAL_EVT_FACE_DETECT_RESULT, // face detection result QCAMERA_INTERNAL_EVT_HISTOGRAM_STATS, // histogram QCAMERA_INTERNAL_EVT_CROP_INFO, // crop info QCAMERA_INTERNAL_EVT_ASD_UPDATE, // asd update result QCAMERA_INTERNAL_EVT_READY_FOR_SNAPSHOT, // Ready for Prepare Snapshot QCAMERA_INTERNAL_EVT_MAX } qcamera_internal_evt_type_t; typedef struct { qcamera_internal_evt_type_t evt_type; union { cam_auto_focus_data_t focus_data; cam_prep_snapshot_state_t prep_snapshot_state; cam_face_detection_data_t faces_data; cam_hist_stats_t stats_data; cam_crop_data_t crop_data; cam_auto_scene_t asd_data; }; } qcamera_sm_internal_evt_payload_t; class QCameraStateMachine { public: QCameraStateMachine(QCamera2HardwareInterface *ctrl); virtual ~QCameraStateMachine(); int32_t procAPI(qcamera_sm_evt_enum_t evt, void *api_payload); int32_t procEvt(qcamera_sm_evt_enum_t evt, void *evt_payload); bool isPreviewRunning(); // check if preview is running bool isPreviewReady(); // check if preview is ready bool isCaptureRunning(); // check if image capture is running bool isNonZSLCaptureRunning(); // check if image capture is running in non ZSL mode String8 dump(); //returns the state information in a string bool isPrepSnapStateRunning(); bool isRecording(); private: typedef enum { QCAMERA_SM_STATE_PREVIEW_STOPPED, // preview is stopped QCAMERA_SM_STATE_PREVIEW_READY, // preview started but preview window is not set yet QCAMERA_SM_STATE_PREVIEWING, // previewing QCAMERA_SM_STATE_PREPARE_SNAPSHOT, // prepare snapshot in case aec estimation is // needed for LED flash QCAMERA_SM_STATE_PIC_TAKING, // taking picture (preview stopped) QCAMERA_SM_STATE_RECORDING, // recording (preview running) QCAMERA_SM_STATE_VIDEO_PIC_TAKING, // taking live snapshot during recording (preview running) QCAMERA_SM_STATE_PREVIEW_PIC_TAKING // taking ZSL/live snapshot (recording stopped but preview running) } qcamera_state_enum_t; typedef enum { QCAMERA_SM_CMD_TYPE_API, // cmd from API QCAMERA_SM_CMD_TYPE_EVT, // cmd from mm-camera-interface/mm-jpeg-interface event QCAMERA_SM_CMD_TYPE_EXIT, // cmd for exiting statemachine cmdThread QCAMERA_SM_CMD_TYPE_MAX } qcamera_sm_cmd_type_t; typedef struct { qcamera_sm_cmd_type_t cmd; // cmd type (where it comes from) qcamera_sm_evt_enum_t evt; // event type void *evt_payload; // ptr to payload } qcamera_sm_cmd_t; int32_t stateMachine(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtPreviewStoppedState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtPreviewReadyState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtPreviewingState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtPrepareSnapshotState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtPicTakingState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtRecordingState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtVideoPicTakingState(qcamera_sm_evt_enum_t evt, void *payload); int32_t procEvtPreviewPicTakingState(qcamera_sm_evt_enum_t evt, void *payload); // main statemachine process routine static void *smEvtProcRoutine(void *data); QCamera2HardwareInterface *m_parent; // ptr to HWI qcamera_state_enum_t m_state; // statemachine state QCameraQueue api_queue; // cmd queue for APIs QCameraQueue evt_queue; // cmd queue for evt from mm-camera-intf/mm-jpeg-intf pthread_t cmd_pid; // cmd thread ID cam_semaphore_t cmd_sem; // semaphore for cmd thread }; }; // namespace qcamera #endif /* __QCAMERA_STATEMACHINE_H__ */