libcamera2/ExynosExif.h

   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)        (((EXIF_LOG2((double)(x)) * 200) + 0.5)/100)
  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 /* Add any additional writeExifIfd() in sections, increase buffer size */
  34 #define NUM_0TH_IFD_TIFF            11
  35 #define NUM_0TH_IFD_EXIF            24
  36 #define NUM_0TH_IFD_GPS             10
  37 #define NUM_1TH_IFD_TIFF            9
  38
  39 /* Type */
  40 #define EXIF_TYPE_BYTE              1
  41 #define EXIF_TYPE_ASCII             2
  42 #define EXIF_TYPE_SHORT             3
  43 #define EXIF_TYPE_LONG              4
  44 #define EXIF_TYPE_RATIONAL          5
  45 #define EXIF_TYPE_UNDEFINED         7
  46 #define EXIF_TYPE_SLONG             9
  47 #define EXIF_TYPE_SRATIONAL         10
  48
  49 #define EXIF_FILE_SIZE              28800
  50
  51 /* 0th IFD TIFF Tags */
  52 #define EXIF_TAG_IMAGE_WIDTH                    0x0100
  53 #define EXIF_TAG_IMAGE_HEIGHT                   0x0101
  54 #define EXIF_TAG_MAKE                           0x010f
  55 #define EXIF_TAG_MODEL                          0x0110
  56 #define EXIF_TAG_ORIENTATION                    0x0112
  57 #define EXIF_TAG_SOFTWARE                       0x0131
  58 #define EXIF_TAG_DATE_TIME                      0x0132
  59 #define EXIF_TAG_SUBSEC_TIME                    0x9290
  60 #define EXIF_TAG_YCBCR_POSITIONING              0x0213
  61 #define EXIF_TAG_EXIF_IFD_POINTER               0x8769
  62 #define EXIF_TAG_GPS_IFD_POINTER                0x8825
  63
  64 /* 0th IFD Exif Private Tags */
  65 #define EXIF_TAG_EXPOSURE_TIME                  0x829A
  66 #define EXIF_TAG_FNUMBER                        0x829D
  67 #define EXIF_TAG_EXPOSURE_PROGRAM               0x8822
  68 #define EXIF_TAG_ISO_SPEED_RATING               0x8827
  69 #define EXIF_TAG_EXIF_VERSION                   0x9000
  70 #define EXIF_TAG_DATE_TIME_ORG                  0x9003
  71 #define EXIF_TAG_SUBSEC_TIME_ORG                0x9291
  72 #define EXIF_TAG_DATE_TIME_DIGITIZE             0x9004
  73 #define EXIF_TAG_SUBSEC_TIME_DIGITIZE           0x9292
  74 #define EXIF_TAG_SHUTTER_SPEED                  0x9201
  75 #define EXIF_TAG_APERTURE                       0x9202
  76 #define EXIF_TAG_BRIGHTNESS                     0x9203
  77 #define EXIF_TAG_EXPOSURE_BIAS                  0x9204
  78 #define EXIF_TAG_MAX_APERTURE                   0x9205
  79 #define EXIF_TAG_METERING_MODE                  0x9207
  80 #define EXIF_TAG_FLASH                          0x9209
  81 #define EXIF_TAG_FOCAL_LENGTH                   0x920A
  82 #define EXIF_TAG_USER_COMMENT                   0x9286
  83 #define EXIF_TAG_COLOR_SPACE                    0xA001
  84 #define EXIF_TAG_PIXEL_X_DIMENSION              0xA002
  85 #define EXIF_TAG_PIXEL_Y_DIMENSION              0xA003
  86 #define EXIF_TAG_EXPOSURE_MODE                  0xA402
  87 #define EXIF_TAG_WHITE_BALANCE                  0xA403
  88 #define EXIF_TAG_SCENCE_CAPTURE_TYPE            0xA406
  89
  90 /* 0th IFD GPS Info Tags */
  91 #define EXIF_TAG_GPS_VERSION_ID                 0x0000
  92 #define EXIF_TAG_GPS_LATITUDE_REF               0x0001
  93 #define EXIF_TAG_GPS_LATITUDE                   0x0002
  94 #define EXIF_TAG_GPS_LONGITUDE_REF              0x0003
  95 #define EXIF_TAG_GPS_LONGITUDE                  0x0004
  96 #define EXIF_TAG_GPS_ALTITUDE_REF               0x0005
  97 #define EXIF_TAG_GPS_ALTITUDE                   0x0006
  98 #define EXIF_TAG_GPS_TIMESTAMP                  0x0007
  99 #define EXIF_TAG_GPS_PROCESSING_METHOD          0x001B
 100 #define EXIF_TAG_GPS_DATESTAMP                  0x001D
 101
 102 /* 1th IFD TIFF Tags */
 103 #define EXIF_TAG_COMPRESSION_SCHEME             0x0103
 104 #define EXIF_TAG_X_RESOLUTION                   0x011A
 105 #define EXIF_TAG_Y_RESOLUTION                   0x011B
 106 #define EXIF_TAG_RESOLUTION_UNIT                0x0128
 107 #define EXIF_TAG_JPEG_INTERCHANGE_FORMAT        0x0201
 108 #define EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LEN    0x0202
 109
 110 typedef enum {
 111     EXIF_ORIENTATION_UP     = 1,
 112     EXIF_ORIENTATION_90     = 6,
 113     EXIF_ORIENTATION_180    = 3,
 114     EXIF_ORIENTATION_270    = 8,
 115 } ExifOrientationType;
 116
 117 typedef enum {
 118     EXIF_SCENE_STANDARD,
 119     EXIF_SCENE_LANDSCAPE,
 120     EXIF_SCENE_PORTRAIT,
 121     EXIF_SCENE_NIGHT,
 122 } CamExifSceneCaptureType;
 123
 124 typedef enum {
 125     EXIF_METERING_UNKNOWN,
 126     EXIF_METERING_AVERAGE,
 127     EXIF_METERING_CENTER,
 128     EXIF_METERING_SPOT,
 129     EXIF_METERING_MULTISPOT,
 130     EXIF_METERING_PATTERN,
 131     EXIF_METERING_PARTIAL,
 132     EXIF_METERING_OTHER     = 255,
 133 } CamExifMeteringModeType;
 134
 135 typedef enum {
 136     EXIF_EXPOSURE_AUTO,
 137     EXIF_EXPOSURE_MANUAL,
 138     EXIF_EXPOSURE_AUTO_BRACKET,
 139 } CamExifExposureModeType;
 140
 141 typedef enum {
 142     EXIF_WB_AUTO,
 143     EXIF_WB_MANUAL,
 144 } CamExifWhiteBalanceType;
 145
 146 /* Values */
 147 #define EXIF_DEF_MAKER          "SAMSUNG"
 148 #define EXIF_DEF_MODEL          "SAMSUNG"
 149 #define EXIF_DEF_SOFTWARE       "SAMSUNG"
 150 #define EXIF_DEF_EXIF_VERSION   "0220"
 151 #define EXIF_DEF_USERCOMMENTS   "User comments"
 152
 153 #define EXIF_DEF_YCBCR_POSITIONING  1   /* centered */
 154 #define EXIF_DEF_FNUMBER_NUM        26  /* 2.6 */
 155 #define EXIF_DEF_FNUMBER_DEN        10
 156 #define EXIF_DEF_EXPOSURE_PROGRAM   3   /* aperture priority */
 157 #define EXIF_DEF_FOCAL_LEN_NUM      278 /* 2.78mm */
 158 #define EXIF_DEF_FOCAL_LEN_DEN      100
 159 #define EXIF_DEF_FLASH              0   /* O: off, 1: on*/
 160 #define EXIF_DEF_COLOR_SPACE        1
 161 #define EXIF_DEF_EXPOSURE_MODE      EXIF_EXPOSURE_AUTO
 162 #define EXIF_DEF_APEX_DEN           100
 163
 164 #define EXIF_DEF_COMPRESSION        6
 165 #define EXIF_DEF_RESOLUTION_NUM     72
 166 #define EXIF_DEF_RESOLUTION_DEN     1
 167 #define EXIF_DEF_RESOLUTION_UNIT    2   /* inches */
 168
 169 typedef struct {
 170     uint32_t num;
 171     uint32_t den;
 172 } rational_t;
 173
 174 typedef struct {
 175     int32_t num;
 176     int32_t den;
 177 } srational_t;
 178
 179 typedef struct {
 180     bool enableGps;
 181     bool enableThumb;
 182
 183     unsigned char maker[32];
 184     unsigned char model[32];
 185     unsigned char software[32];
 186     unsigned char exif_version[4];
 187     unsigned char date_time[20];
 188     unsigned char sub_sec[4];
 189     unsigned char user_comment[150];
 190
 191     uint32_t width;
 192     uint32_t height;
 193     uint32_t widthThumb;
 194     uint32_t heightThumb;
 195
 196     uint16_t orientation;
 197     uint16_t ycbcr_positioning;
 198     uint16_t exposure_program;
 199     uint16_t iso_speed_rating;
 200     uint16_t metering_mode;
 201     uint16_t flash;
 202     uint16_t color_space;
 203     uint16_t exposure_mode;
 204     uint16_t white_balance;
 205     uint16_t scene_capture_type;
 206
 207     rational_t exposure_time;
 208     rational_t fnumber;
 209     rational_t aperture;
 210     rational_t max_aperture;
 211     rational_t focal_length;
 212
 213     srational_t shutter_speed;
 214     srational_t brightness;
 215     srational_t exposure_bias;
 216
 217     unsigned char gps_latitude_ref[2];
 218     unsigned char gps_longitude_ref[2];
 219
 220     uint8_t gps_version_id[4];
 221     uint8_t gps_altitude_ref;
 222
 223     rational_t gps_latitude[3];
 224     rational_t gps_longitude[3];
 225     rational_t gps_altitude;
 226     rational_t gps_timestamp[3];
 227     unsigned char gps_datestamp[11];
 228     unsigned char gps_processing_method[100];
 229
 230     rational_t x_resolution;
 231     rational_t y_resolution;
 232     uint16_t resolution_unit;
 233     uint16_t compression_scheme;
 234 } exif_attribute_t;
 235
 236 #endif /* EXYNOS_EXIF_H_ */