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/*
* Copyright Samsung Electronics Co.,LTD.
* Copyright (C) 2010 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 ANDROID_HARDWARE_EXIF_H
#define ANDROID_HARDWARE_EXIF_H
#include <math.h>
#define EXIF_LOG2(x) (log((double)(x)) / log(2.0))
#define APEX_FNUM_TO_APERTURE(x) ((int)(EXIF_LOG2((double)(x)) * 200.0 + 0.5))
#define APEX_EXPOSURE_TO_SHUTTER(x) ((x) >= 1 ? \
(int)(-(EXIF_LOG2((double)(x)) * 100.0 + 0.5)) : \
(int)(-(EXIF_LOG2((double)(x)) * 100.0 - 0.5)))
#define APEX_ISO_TO_FILMSENSITIVITY(x) ((int)(EXIF_LOG2((x) / 3.125) * 100.0 + 0.5))
#define APEX_SHUTTER_TO_EXPOSURE(x) ((int)((pow(2.0, (double)(x) / 100.0)) + 0.5))
#define NUM_SIZE 2
#define IFD_SIZE 12
#define OFFSET_SIZE 4
#define NUM_0TH_IFD_TIFF 10
#define NUM_0TH_IFD_EXIF 22
#define NUM_0TH_IFD_GPS 10
#define NUM_1TH_IFD_TIFF 9
/* Type */
#define EXIF_TYPE_BYTE 1
#define EXIF_TYPE_ASCII 2
#define EXIF_TYPE_SHORT 3
#define EXIF_TYPE_LONG 4
#define EXIF_TYPE_RATIONAL 5
#define EXIF_TYPE_UNDEFINED 7
#define EXIF_TYPE_SLONG 9
#define EXIF_TYPE_SRATIONAL 10
#define EXIF_FILE_SIZE 28800
/* 0th IFD TIFF Tags */
#define EXIF_TAG_IMAGE_WIDTH 0x0100
#define EXIF_TAG_IMAGE_HEIGHT 0x0101
#define EXIF_TAG_MAKE 0x010f
#define EXIF_TAG_MODEL 0x0110
#define EXIF_TAG_ORIENTATION 0x0112
#define EXIF_TAG_SOFTWARE 0x0131
#define EXIF_TAG_DATE_TIME 0x0132
#define EXIF_TAG_YCBCR_POSITIONING 0x0213
#define EXIF_TAG_EXIF_IFD_POINTER 0x8769
#define EXIF_TAG_GPS_IFD_POINTER 0x8825
/* 0th IFD Exif Private Tags */
#define EXIF_TAG_EXPOSURE_TIME 0x829A
#define EXIF_TAG_FNUMBER 0x829D
#define EXIF_TAG_EXPOSURE_PROGRAM 0x8822
#define EXIF_TAG_ISO_SPEED_RATING 0x8827
#define EXIF_TAG_EXIF_VERSION 0x9000
#define EXIF_TAG_DATE_TIME_ORG 0x9003
#define EXIF_TAG_DATE_TIME_DIGITIZE 0x9004
#define EXIF_TAG_SHUTTER_SPEED 0x9201
#define EXIF_TAG_APERTURE 0x9202
#define EXIF_TAG_BRIGHTNESS 0x9203
#define EXIF_TAG_EXPOSURE_BIAS 0x9204
#define EXIF_TAG_MAX_APERTURE 0x9205
#define EXIF_TAG_METERING_MODE 0x9207
#define EXIF_TAG_FLASH 0x9209
#define EXIF_TAG_FOCAL_LENGTH 0x920A
#define EXIF_TAG_USER_COMMENT 0x9286
#define EXIF_TAG_COLOR_SPACE 0xA001
#define EXIF_TAG_PIXEL_X_DIMENSION 0xA002
#define EXIF_TAG_PIXEL_Y_DIMENSION 0xA003
#define EXIF_TAG_EXPOSURE_MODE 0xA402
#define EXIF_TAG_WHITE_BALANCE 0xA403
#define EXIF_TAG_SCENCE_CAPTURE_TYPE 0xA406
/* 0th IFD GPS Info Tags */
#define EXIF_TAG_GPS_VERSION_ID 0x0000
#define EXIF_TAG_GPS_LATITUDE_REF 0x0001
#define EXIF_TAG_GPS_LATITUDE 0x0002
#define EXIF_TAG_GPS_LONGITUDE_REF 0x0003
#define EXIF_TAG_GPS_LONGITUDE 0x0004
#define EXIF_TAG_GPS_ALTITUDE_REF 0x0005
#define EXIF_TAG_GPS_ALTITUDE 0x0006
#define EXIF_TAG_GPS_TIMESTAMP 0x0007
#define EXIF_TAG_GPS_PROCESSING_METHOD 0x001B
#define EXIF_TAG_GPS_DATESTAMP 0x001D
/* 1th IFD TIFF Tags */
#define EXIF_TAG_COMPRESSION_SCHEME 0x0103
#define EXIF_TAG_X_RESOLUTION 0x011A
#define EXIF_TAG_Y_RESOLUTION 0x011B
#define EXIF_TAG_RESOLUTION_UNIT 0x0128
#define EXIF_TAG_JPEG_INTERCHANGE_FORMAT 0x0201
#define EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202
typedef enum {
EXIF_ORIENTATION_UP = 1,
EXIF_ORIENTATION_90 = 6,
EXIF_ORIENTATION_180 = 3,
EXIF_ORIENTATION_270 = 8,
} ExifOrientationType;
typedef enum {
EXIF_SCENE_STANDARD,
EXIF_SCENE_LANDSCAPE,
EXIF_SCENE_PORTRAIT,
EXIF_SCENE_NIGHT,
} CamExifSceneCaptureType;
typedef enum {
EXIF_METERING_UNKNOWN,
EXIF_METERING_AVERAGE,
EXIF_METERING_CENTER,
EXIF_METERING_SPOT,
EXIF_METERING_MULTISPOT,
EXIF_METERING_PATTERN,
EXIF_METERING_PARTIAL,
EXIF_METERING_OTHER = 255,
} CamExifMeteringModeType;
typedef enum {
EXIF_EXPOSURE_AUTO,
EXIF_EXPOSURE_MANUAL,
EXIF_EXPOSURE_AUTO_BRACKET,
} CamExifExposureModeType;
typedef enum {
EXIF_WB_AUTO,
EXIF_WB_MANUAL,
} CamExifWhiteBalanceType;
/* Values */
#define EXIF_DEF_MAKER "SAMSUNG"
#define EXIF_DEF_MODEL "SAMSUNG"
#define EXIF_DEF_SOFTWARE "SAMSUNG"
#define EXIF_DEF_EXIF_VERSION "0220"
#define EXIF_DEF_USERCOMMENTS "User comments"
#define EXIF_DEF_YCBCR_POSITIONING 1 /* centered */
#define EXIF_DEF_FNUMBER_NUM 265 /* 2.65 */
#define EXIF_DEF_FNUMBER_DEN 100
#define EXIF_DEF_EXPOSURE_PROGRAM 3 /* aperture priority */
#define EXIF_DEF_FOCAL_LEN_NUM 278 /* 2.78mm */
#define EXIF_DEF_FOCAL_LEN_DEN 100
#define EXIF_DEF_FLASH 0 /* O: off, 1: on*/
#define EXIF_DEF_COLOR_SPACE 1
#define EXIF_DEF_EXPOSURE_MODE EXIF_EXPOSURE_AUTO
#define EXIF_DEF_APEX_DEN 100
#define EXIF_DEF_COMPRESSION 6
#define EXIF_DEF_RESOLUTION_NUM 72
#define EXIF_DEF_RESOLUTION_DEN 1
#define EXIF_DEF_RESOLUTION_UNIT 2 /* inches */
typedef struct {
uint32_t num;
uint32_t den;
} rational_t;
typedef struct {
int32_t num;
int32_t den;
} srational_t;
typedef struct {
bool enableGps;
bool enableThumb;
unsigned char maker[32];
unsigned char model[32];
unsigned char software[32];
unsigned char exif_version[4];
unsigned char date_time[20];
unsigned char user_comment[150];
uint32_t width;
uint32_t height;
uint32_t widthThumb;
uint32_t heightThumb;
uint16_t orientation;
uint16_t ycbcr_positioning;
uint16_t exposure_program;
uint16_t iso_speed_rating;
uint16_t metering_mode;
uint16_t flash;
uint16_t color_space;
uint16_t exposure_mode;
uint16_t white_balance;
uint16_t scene_capture_type;
rational_t exposure_time;
rational_t fnumber;
rational_t aperture;
rational_t max_aperture;
rational_t focal_length;
srational_t shutter_speed;
srational_t brightness;
srational_t exposure_bias;
unsigned char gps_latitude_ref[2];
unsigned char gps_longitude_ref[2];
uint8_t gps_version_id[4];
uint8_t gps_altitude_ref;
rational_t gps_latitude[3];
rational_t gps_longitude[3];
rational_t gps_altitude;
rational_t gps_timestamp[3];
unsigned char gps_datestamp[11];
unsigned char gps_processing_method[100];
rational_t x_resolution;
rational_t y_resolution;
uint16_t resolution_unit;
uint16_t compression_scheme;
} exif_attribute_t;
#endif /* ANDROID_HARDWARE_EXIF_H */
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