在imx230_lib.c中，最后将所有的参数设置都放入sensor_lib_t类型的结构体sensor_lib_ptr中，定义函数imx230_ofilm_open_lib()来返回sensor_lib_ptr的地址，供外界调用。
结构体sensor_lib_t涵盖了关于camera设置的几乎全部信息。如下：
typedef struct {
/* sensor slave info */
struct msm_camera_sensor_slave_info *sensor_slave_info;
/* sensor info */
struct msm_sensor_init_params *sensor_init_params;
/* name of the AF actuator (if any)*/
char* actuator_name;
/* name of the eeprom (if any)*/
char* eeprom_name;
/* sensor output settings */
sensor_output_t *sensor_output;
/* sensor output register address */
struct msm_sensor_output_reg_addr_t *output_reg_addr;
/* sensor exposure gain register address */
struct msm_sensor_exp_gain_info_t *exp_gain_info;
/* sensor aec info */
sensor_aec_data_t *aec_info;
/* sensor snapshot exposure wait frames info */
uint16_t snapshot_exp_wait_frames;
/* number of frames to skip after start stream info */
uint16_t sensor_num_frame_skip;
/* number of frames to skip after start HDR stream info */
uint16_t sensor_num_HDR_frame_skip;
/* sensor pipeline delay */
uint32_t sensor_max_pipeline_frame_delay;
/* sensor exposure table size */
uint16_t exposure_table_size;
/* sensor lens info */
sensor_lens_info_t *default_lens_info;
/* csi lane params */
struct csi_lane_params_t *csi_lane_params;
/* csi cid params */
struct msm_camera_csid_vc_cfg *csi_cid_params;
/* sensor port info that consists of cid mask and fourcc mapaping */
sensor_stream_info_array_t *sensor_stream_info_array;
/* csi cid params size */
uint16_t csi_cid_params_size;
/* init settings */
struct sensor_lib_reg_settings_array *init_settings_array;
/* start settings */
struct msm_camera_i2c_reg_setting *start_settings;
/* stop settings */
struct msm_camera_i2c_reg_setting *stop_settings;
/* group on settings */
struct msm_camera_i2c_reg_setting *groupon_settings;
/* group off settings */
struct msm_camera_i2c_reg_setting *groupoff_settings;
/* resolution config table */
struct sensor_res_cfg_table_t *sensor_res_cfg_table;
/* resolution settings */
struct sensor_lib_reg_settings_array *res_settings_array;
struct sensor_lib_out_info_array *out_info_array;
struct sensor_lib_csi_params_array *csi_params_array;
struct sensor_lib_crop_params_array *crop_params_array;
struct sensor_lib_chromatix_array *chromatix_array;
/* video_hdr mode info*/
struct sensor_lib_meta_data_info_array *meta_data_out_info_array;
/* exposure funtion table */
sensor_exposure_table_t *exposure_func_table;
/* exposure info */
sensor_exposure_info_t exposure_info;
/* flag to sync exp and gain */
uint8_t sync_exp_gain;
/* video hdr func table */
sensor_video_hdr_table_t *video_hdr_awb_lsc_func_table;
/* scale size tbl count*/
uint8_t scale_tbl_cnt;
/* function to get scale size tbl*/
int32_t (*get_scale_tbl)(msm_sensor_dimension_t *);
/* supported Scene mode */
uint32_t *sensor_supported_scene_mode;
/* supported effect mode */
uint32_t *sensor_supported_effect_mode;
/* sensor pipeline immediate delay */
uint32_t sensor_max_immediate_frame_delay;
/* library specific data */
void *data;
} sensor_lib_t;