1/*
2 * Copyright Samsung Electronics Co.,LTD.
3 * Copyright (C) 2010 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17#ifndef EXYNOS_EXIF_H_
18#define EXYNOS_EXIF_H_
19
20#include <math.h>
21
22#define EXIF_LOG2(x)                    (log((double)(x)) / log(2.0))
23#define APEX_FNUM_TO_APERTURE(x)        ((int)(EXIF_LOG2((double)(x)) * 2 + 0.5))
24#define APEX_EXPOSURE_TO_SHUTTER(x)     ((x) >= 1 ?                                 \
25                                        (int)(-(EXIF_LOG2((double)(x)) + 0.5)) :    \
26                                        (int)(-(EXIF_LOG2((double)(x)) - 0.5)))
27#define APEX_ISO_TO_FILMSENSITIVITY(x)  ((int)(EXIF_LOG2((x) / 3.125) + 0.5))
28
29#define NUM_SIZE                    2
30#define IFD_SIZE                    12
31#define OFFSET_SIZE                 4
32
33#define NUM_0TH_IFD_TIFF            10
34#define NUM_0TH_IFD_EXIF            22
35#define NUM_0TH_IFD_GPS             10
36#define NUM_1TH_IFD_TIFF            9
37
38/* Type */
39#define EXIF_TYPE_BYTE              1
40#define EXIF_TYPE_ASCII             2
41#define EXIF_TYPE_SHORT             3
42#define EXIF_TYPE_LONG              4
43#define EXIF_TYPE_RATIONAL          5
44#define EXIF_TYPE_UNDEFINED         7
45#define EXIF_TYPE_SLONG             9
46#define EXIF_TYPE_SRATIONAL         10
47
48#define EXIF_FILE_SIZE              28800
49
50/* 0th IFD TIFF Tags */
51#define EXIF_TAG_IMAGE_WIDTH                    0x0100
52#define EXIF_TAG_IMAGE_HEIGHT                   0x0101
53#define EXIF_TAG_MAKE                           0x010f
54#define EXIF_TAG_MODEL                          0x0110
55#define EXIF_TAG_ORIENTATION                    0x0112
56#define EXIF_TAG_SOFTWARE                       0x0131
57#define EXIF_TAG_DATE_TIME                      0x0132
58#define EXIF_TAG_YCBCR_POSITIONING              0x0213
59#define EXIF_TAG_EXIF_IFD_POINTER               0x8769
60#define EXIF_TAG_GPS_IFD_POINTER                0x8825
61
62/* 0th IFD Exif Private Tags */
63#define EXIF_TAG_EXPOSURE_TIME                  0x829A
64#define EXIF_TAG_FNUMBER                        0x829D
65#define EXIF_TAG_EXPOSURE_PROGRAM               0x8822
66#define EXIF_TAG_ISO_SPEED_RATING               0x8827
67#define EXIF_TAG_EXIF_VERSION                   0x9000
68#define EXIF_TAG_DATE_TIME_ORG                  0x9003
69#define EXIF_TAG_DATE_TIME_DIGITIZE             0x9004
70#define EXIF_TAG_SHUTTER_SPEED                  0x9201
71#define EXIF_TAG_APERTURE                       0x9202
72#define EXIF_TAG_BRIGHTNESS                     0x9203
73#define EXIF_TAG_EXPOSURE_BIAS                  0x9204
74#define EXIF_TAG_MAX_APERTURE                   0x9205
75#define EXIF_TAG_METERING_MODE                  0x9207
76#define EXIF_TAG_FLASH                          0x9209
77#define EXIF_TAG_FOCAL_LENGTH                   0x920A
78#define EXIF_TAG_USER_COMMENT                   0x9286
79#define EXIF_TAG_COLOR_SPACE                    0xA001
80#define EXIF_TAG_PIXEL_X_DIMENSION              0xA002
81#define EXIF_TAG_PIXEL_Y_DIMENSION              0xA003
82#define EXIF_TAG_EXPOSURE_MODE                  0xA402
83#define EXIF_TAG_WHITE_BALANCE                  0xA403
84#define EXIF_TAG_SCENCE_CAPTURE_TYPE            0xA406
85
86/* 0th IFD GPS Info Tags */
87#define EXIF_TAG_GPS_VERSION_ID                 0x0000
88#define EXIF_TAG_GPS_LATITUDE_REF               0x0001
89#define EXIF_TAG_GPS_LATITUDE                   0x0002
90#define EXIF_TAG_GPS_LONGITUDE_REF              0x0003
91#define EXIF_TAG_GPS_LONGITUDE                  0x0004
92#define EXIF_TAG_GPS_ALTITUDE_REF               0x0005
93#define EXIF_TAG_GPS_ALTITUDE                   0x0006
94#define EXIF_TAG_GPS_TIMESTAMP                  0x0007
95#define EXIF_TAG_GPS_PROCESSING_METHOD          0x001B
96#define EXIF_TAG_GPS_DATESTAMP                  0x001D
97
98/* 1th IFD TIFF Tags */
99#define EXIF_TAG_COMPRESSION_SCHEME             0x0103
100#define EXIF_TAG_X_RESOLUTION                   0x011A
101#define EXIF_TAG_Y_RESOLUTION                   0x011B
102#define EXIF_TAG_RESOLUTION_UNIT                0x0128
103#define EXIF_TAG_JPEG_INTERCHANGE_FORMAT        0x0201
104#define EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LEN    0x0202
105
106typedef enum {
107    EXIF_ORIENTATION_UP     = 1,
108    EXIF_ORIENTATION_90     = 6,
109    EXIF_ORIENTATION_180    = 3,
110    EXIF_ORIENTATION_270    = 8,
111} ExifOrientationType;
112
113typedef enum {
114    EXIF_SCENE_STANDARD,
115    EXIF_SCENE_LANDSCAPE,
116    EXIF_SCENE_PORTRAIT,
117    EXIF_SCENE_NIGHT,
118} CamExifSceneCaptureType;
119
120typedef enum {
121    EXIF_METERING_UNKNOWN,
122    EXIF_METERING_AVERAGE,
123    EXIF_METERING_CENTER,
124    EXIF_METERING_SPOT,
125    EXIF_METERING_MULTISPOT,
126    EXIF_METERING_PATTERN,
127    EXIF_METERING_PARTIAL,
128    EXIF_METERING_OTHER     = 255,
129} CamExifMeteringModeType;
130
131typedef enum {
132    EXIF_EXPOSURE_AUTO,
133    EXIF_EXPOSURE_MANUAL,
134    EXIF_EXPOSURE_AUTO_BRACKET,
135} CamExifExposureModeType;
136
137typedef enum {
138    EXIF_WB_AUTO,
139    EXIF_WB_MANUAL,
140} CamExifWhiteBalanceType;
141
142/* Values */
143#define EXIF_DEF_MAKER          "SAMSUNG"
144#define EXIF_DEF_MODEL          "SAMSUNG"
145#define EXIF_DEF_SOFTWARE       "SAMSUNG"
146#define EXIF_DEF_EXIF_VERSION   "0220"
147#define EXIF_DEF_USERCOMMENTS   "User comments"
148
149#define EXIF_DEF_YCBCR_POSITIONING  1   /* centered */
150#define EXIF_DEF_FNUMBER_NUM        26  /* 2.6 */
151#define EXIF_DEF_FNUMBER_DEN        10
152#define EXIF_DEF_EXPOSURE_PROGRAM   3   /* aperture priority */
153#define EXIF_DEF_FOCAL_LEN_NUM      278 /* 2.78mm */
154#define EXIF_DEF_FOCAL_LEN_DEN      100
155#define EXIF_DEF_FLASH              0   /* O: off, 1: on*/
156#define EXIF_DEF_COLOR_SPACE        1
157#define EXIF_DEF_EXPOSURE_MODE      EXIF_EXPOSURE_AUTO
158#define EXIF_DEF_APEX_DEN           10
159
160#define EXIF_DEF_COMPRESSION        6
161#define EXIF_DEF_RESOLUTION_NUM     72
162#define EXIF_DEF_RESOLUTION_DEN     1
163#define EXIF_DEF_RESOLUTION_UNIT    2   /* inches */
164
165typedef struct {
166    uint32_t num;
167    uint32_t den;
168} rational_t;
169
170typedef struct {
171    int32_t num;
172    int32_t den;
173} srational_t;
174
175typedef struct {
176    bool enableGps;
177    bool enableThumb;
178
179    unsigned char maker[32];
180    unsigned char model[32];
181    unsigned char software[32];
182    unsigned char exif_version[4];
183    unsigned char date_time[20];
184    unsigned char user_comment[150];
185
186    uint32_t width;
187    uint32_t height;
188    uint32_t widthThumb;
189    uint32_t heightThumb;
190
191    uint16_t orientation;
192    uint16_t ycbcr_positioning;
193    uint16_t exposure_program;
194    uint16_t iso_speed_rating;
195    uint16_t metering_mode;
196    uint16_t flash;
197    uint16_t color_space;
198    uint16_t exposure_mode;
199    uint16_t white_balance;
200    uint16_t scene_capture_type;
201
202    rational_t exposure_time;
203    rational_t fnumber;
204    rational_t aperture;
205    rational_t max_aperture;
206    rational_t focal_length;
207
208    srational_t shutter_speed;
209    srational_t brightness;
210    srational_t exposure_bias;
211
212    unsigned char gps_latitude_ref[2];
213    unsigned char gps_longitude_ref[2];
214
215    uint8_t gps_version_id[4];
216    uint8_t gps_altitude_ref;
217
218    rational_t gps_latitude[3];
219    rational_t gps_longitude[3];
220    rational_t gps_altitude;
221    rational_t gps_timestamp[3];
222    unsigned char gps_datestamp[11];
223    unsigned char gps_processing_method[100];
224
225    rational_t x_resolution;
226    rational_t y_resolution;
227    uint16_t resolution_unit;
228    uint16_t compression_scheme;
229} exif_attribute_t;
230
231#endif /* EXYNOS_EXIF_H_ */
232