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#ifndef __QCAMERA_STATEMACHINE_H__
#define __QCAMERA_STATEMACHINE_H__
#include <pthread.h>
#include <cam_semaphore.h>
extern "C" {
#include <mm_camera_interface.h>
}
#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_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;
// 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_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;
};
} 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
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__ */