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+/*! @file gpr_exif_info.h
+ *
+ * @brief Declaration of gpr_exif_info object and associated functions
+ *
+ * GPR API can be invoked by simply including this header file.
+ * This file includes all other header files that are needed.
+ *
+ * (C) Copyright 2018 GoPro Inc (http://gopro.com/).
+ *
+ * Licensed under either:
+ * - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
+ * - MIT license, http://opensource.org/licenses/MIT
+ * at your option.
+ *
+ * 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 GPR_EXIF_INFO
+#define GPR_EXIF_INFO
+
+#define CAMERA_MAKE_SIZE 32
+#define CAMERA_MODEL_SIZE 32
+#define CAMERA_SERIAL_SIZE 32
+#define SOFTWARE_VERSION_SIZE 32
+#define USER_COMMENT_SIZE 64
+#define SATELLITES_USED_SIZE 32
+#define SURVEY_DATA_SIZE 32
+#define PROCESSING_METHOD_SIZE 32
+#define AREA_INFORMATION_SIZE 32
+#define IMAGE_DESCRIPTION_SIZE 32
+
+#include "gpr_platform.h"
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+ typedef enum
+ {
+ gpr_sensing_method_chip_color_area = 2,
+
+ } gpr_sensing_method;
+
+ typedef enum
+ {
+ gpr_file_source_digital_still = 3,
+
+ } gpr_file_source;
+
+ typedef enum
+ {
+ gpr_scene_type_directly_photographed = 1,
+
+ } gpr_scene_type;
+
+ typedef enum
+ {
+ gpr_white_balance_auto = 0,
+
+ gpr_white_balance_manual = 1,
+
+ } gpr_white_balance;
+
+ typedef enum
+ {
+ gpr_exposure_mode_auto = 0,
+
+ gpr_exposure_mode_manual = 1,
+
+ gpr_exposure_mode_auto_bracket = 2,
+
+ } gpr_exposure_mode;
+
+ typedef enum
+ {
+ gpr_scene_capture_type_standard = 0,
+
+ gpr_scene_capture_type_landscape = 1,
+
+ gpr_scene_capture_type_portrait = 2,
+
+ gpr_scene_capture_type_night = 3,
+
+ } gpr_scene_capture_type;
+
+ typedef enum
+ {
+ gpr_contrast_normal = 0,
+
+ } gpr_contrast;
+
+ typedef enum
+ {
+ gpr_gain_control_normal = 0,
+
+ } gpr_gain_control;
+
+ typedef enum
+ {
+ gpr_saturation_normal = 0,
+
+ } gpr_saturation;
+
+ typedef enum
+ {
+ gpr_sharpness_normal = 0,
+
+ gpr_sharpness_soft = 1,
+
+ gpr_sharpness_hard = 2,
+
+ } gpr_sharpness;
+
+ typedef enum
+ {
+ gpr_flash_not_used = 0,
+
+ gpr_flash_used = 1,
+
+ gpr_flash_not_supported = 32,
+
+ } gpr_flash;
+
+ typedef enum
+ {
+ gpr_exposure_program_manual_control = 1,
+
+ gpr_exposure_program_normal = 2,
+
+ gpr_exposure_program_aperture_priority = 3,
+
+ gpr_exposure_program_shutter_priority = 4,
+
+ gpr_exposure_program_creative = 5,
+
+ gpr_exposure_program_action = 6,
+
+ gpr_exposure_program_portrait_mode = 7,
+
+ gpr_exposure_program_landscape_mode = 8,
+
+ } gpr_exposure_program;
+
+ typedef enum
+ {
+ gpr_metering_mode_average = 1,
+
+ gpr_metering_mode_center_weighted_average = 2,
+
+ gpr_metering_mode_spot = 3,
+
+ gpr_metering_mode_multi_spot = 4,
+
+ gpr_metering_mode_multi_segment = 5,
+
+ } gpr_metering_mode;
+
+ typedef enum
+ {
+ gpr_light_source_auto = 0,
+
+ gpr_light_source_daylight = 1,
+
+ gpr_light_source_fuorescent = 2,
+
+ gpr_light_source_tungsten = 3,
+
+ } gpr_light_source; // See this link for more info: http://www.awaresystems.be/imaging/tiff/tifftags/privateifd/exif/lightsource.html
+
+ /*****************************************************************************/
+
+ typedef struct
+ {
+ int32_t numerator; // Numerator
+
+ int32_t denominator; // Denominator
+
+ } gpr_signed_rational;
+
+ typedef struct
+ {
+ uint32_t numerator; // Numerator
+
+ uint32_t denominator; // Denominator
+
+ } gpr_unsigned_rational;
+
+ typedef struct
+ {
+ uint32_t year;
+
+ uint32_t month;
+
+ uint32_t day;
+
+ uint32_t hour;
+
+ uint32_t minute;
+
+ uint32_t second;
+
+ } gpr_date_and_time;
+
+ typedef struct
+ {
+ bool gps_info_valid;
+
+ uint32_t version_id;
+
+ char latitude_ref[2];
+
+ gpr_unsigned_rational latitude[3];
+
+ char longitude_ref[2];
+
+ gpr_unsigned_rational longitude[3];
+
+ uint8_t altitude_ref;
+
+ gpr_unsigned_rational altitude;
+
+ gpr_unsigned_rational time_stamp[3];
+
+ char satellites[SATELLITES_USED_SIZE];
+
+ char status[2];
+
+ char measure_mode[2];
+
+ gpr_unsigned_rational dop;
+
+ char speed_ref[2];
+
+ gpr_unsigned_rational speed;
+
+ char track_ref[2];
+
+ gpr_unsigned_rational track;
+
+ char img_direction_ref[2];
+
+ gpr_unsigned_rational img_direction;
+
+ char map_datum[SURVEY_DATA_SIZE];
+
+ char dest_latitude_ref[2];
+
+ gpr_unsigned_rational dest_latitude[3];
+
+ char dest_longitude_ref[2];
+
+ gpr_unsigned_rational dest_longitude[3];
+
+ char dest_bearing_ref[2];
+
+ gpr_unsigned_rational dest_bearing;
+
+ char dest_distance_ref[2];
+
+ gpr_unsigned_rational dest_distance;
+
+ char processing_method[PROCESSING_METHOD_SIZE];
+
+ char area_information[AREA_INFORMATION_SIZE];
+
+ char date_stamp[11];
+
+ unsigned short differential;
+
+ } gpr_gps_info;
+
+ typedef struct
+ {
+ char camera_make[CAMERA_MAKE_SIZE];
+
+ char camera_model[CAMERA_MODEL_SIZE];
+
+ char camera_serial[CAMERA_SERIAL_SIZE];
+
+ char software_version[SOFTWARE_VERSION_SIZE];
+
+ char user_comment[USER_COMMENT_SIZE];
+
+ char image_description[IMAGE_DESCRIPTION_SIZE];
+
+ gpr_unsigned_rational exposure_time; /* exposure time (as fraction) */
+
+ gpr_unsigned_rational f_stop_number; /* f-stop number (as fraction) */
+
+ gpr_unsigned_rational aperture; /* aperture */
+
+ gpr_exposure_program exposure_program;
+
+ uint16_t iso_speed_rating;
+
+ gpr_date_and_time date_time_original;
+
+ gpr_date_and_time date_time_digitized;
+
+ gpr_signed_rational exposure_bias;
+
+ gpr_metering_mode metering_mode;
+
+ gpr_light_source light_source;
+
+ gpr_flash flash;
+
+ gpr_unsigned_rational focal_length;
+
+ gpr_sharpness sharpness;
+
+ uint16_t saturation;
+
+ gpr_gain_control gain_control;
+
+ gpr_contrast contrast;
+
+ gpr_scene_capture_type scene_capture_type;
+
+ gpr_exposure_mode exposure_mode;
+
+ uint16_t focal_length_in_35mm_film;
+
+ gpr_unsigned_rational digital_zoom;
+
+ gpr_white_balance white_balance;
+
+ gpr_scene_type scene_type;
+
+ gpr_file_source file_source;
+
+ gpr_sensing_method sensing_method;
+
+ gpr_gps_info gps_info;
+
+ } gpr_exif_info;
+
+ void gpr_exif_info_set_defaults( gpr_exif_info* x );
+
+ void gpr_exif_info_get_camera_make_and_model( const gpr_exif_info* x, char camera_make_and_model[256] );
+
+ gpr_date_and_time construct_gpr_date_and_time (uint32_t year, uint32_t month, uint32_t day, uint32_t hour, uint32_t minute, uint32_t second);
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif // GPR_EXIF_INFO
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