The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1 | //-------------------------------------------------------------------------- |
| 2 | // Program to pull the information out of various types of EXIF digital |
| 3 | // camera files and show it in a reasonably consistent way |
| 4 | // |
| 5 | // This module parses the very complicated exif structures. |
| 6 | // |
| 7 | // Matthias Wandel |
| 8 | //-------------------------------------------------------------------------- |
| 9 | #include "jhead.h" |
| 10 | |
| 11 | #include <math.h> |
| 12 | #include <ctype.h> |
| 13 | #include <utils/Log.h> |
| 14 | |
| 15 | static unsigned char * DirWithThumbnailPtrs; |
| 16 | static double FocalplaneXRes; |
| 17 | static double FocalplaneUnits; |
| 18 | static int ExifImageWidth; |
| 19 | static int MotorolaOrder = 0; |
| 20 | |
| 21 | // for fixing the rotation. |
| 22 | static void * OrientationPtr[2]; |
| 23 | static int OrientationNumFormat[2]; |
| 24 | int NumOrientations = 0; |
| 25 | |
| 26 | |
| 27 | // Define the line below to turn on poor man's debugging output |
| 28 | #undef SUPERDEBUG |
| 29 | |
| 30 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 31 | #define printf ALOGE |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 32 | #endif |
| 33 | |
| 34 | //-------------------------------------------------------------------------- |
| 35 | // Table of Jpeg encoding process names |
| 36 | static const TagTable_t ProcessTable[] = { |
| 37 | { M_SOF0, "Baseline", 0, 0}, |
| 38 | { M_SOF1, "Extended sequential", 0, 0}, |
| 39 | { M_SOF2, "Progressive", 0, 0}, |
| 40 | { M_SOF3, "Lossless", 0, 0}, |
| 41 | { M_SOF5, "Differential sequential", 0, 0}, |
| 42 | { M_SOF6, "Differential progressive", 0, 0}, |
| 43 | { M_SOF7, "Differential lossless", 0, 0}, |
| 44 | { M_SOF9, "Extended sequential, arithmetic coding", 0, 0}, |
| 45 | { M_SOF10, "Progressive, arithmetic coding", 0, 0}, |
| 46 | { M_SOF11, "Lossless, arithmetic coding", 0, 0}, |
| 47 | { M_SOF13, "Differential sequential, arithmetic coding", 0, 0}, |
| 48 | { M_SOF14, "Differential progressive, arithmetic coding", 0, 0}, |
| 49 | { M_SOF15, "Differential lossless, arithmetic coding", 0, 0}, |
| 50 | }; |
| 51 | |
| 52 | #define PROCESS_TABLE_SIZE (sizeof(ProcessTable) / sizeof(TagTable_t)) |
| 53 | |
| 54 | // 1 - "The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side." |
| 55 | // 2 - "The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side." |
| 56 | // 3 - "The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side." |
| 57 | // 4 - "The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side." |
| 58 | |
| 59 | // 5 - "The 0th row is the visual left-hand side of of the image, and the 0th column is the visual top." |
| 60 | // 6 - "The 0th row is the visual right-hand side of of the image, and the 0th column is the visual top." |
| 61 | // 7 - "The 0th row is the visual right-hand side of of the image, and the 0th column is the visual bottom." |
| 62 | // 8 - "The 0th row is the visual left-hand side of of the image, and the 0th column is the visual bottom." |
| 63 | |
| 64 | // Note: The descriptions here are the same as the name of the command line |
| 65 | // option to pass to jpegtran to right the image |
| 66 | |
| 67 | static const char * OrientTab[9] = { |
| 68 | "Undefined", |
| 69 | "Normal", // 1 |
| 70 | "flip horizontal", // left right reversed mirror |
| 71 | "rotate 180", // 3 |
| 72 | "flip vertical", // upside down mirror |
| 73 | "transpose", // Flipped about top-left <--> bottom-right axis. |
| 74 | "rotate 90", // rotate 90 cw to right it. |
| 75 | "transverse", // flipped about top-right <--> bottom-left axis |
| 76 | "rotate 270", // rotate 270 to right it. |
| 77 | }; |
| 78 | |
| 79 | const int BytesPerFormat[] = {0,1,1,2,4,8,1,1,2,4,8,4,8}; |
| 80 | |
| 81 | //-------------------------------------------------------------------------- |
| 82 | // Describes tag values |
| 83 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 84 | #define TAG_INTEROP_INDEX 0x0001 |
| 85 | #define TAG_INTEROP_VERSION 0x0002 |
| 86 | #define TAG_IMAGE_WIDTH 0x0100 |
| 87 | #define TAG_IMAGE_LENGTH 0x0101 |
| 88 | #define TAG_BITS_PER_SAMPLE 0x0102 |
| 89 | #define TAG_COMPRESSION 0x0103 |
| 90 | #define TAG_PHOTOMETRIC_INTERP 0x0106 |
| 91 | #define TAG_FILL_ORDER 0x010A |
| 92 | #define TAG_DOCUMENT_NAME 0x010D |
| 93 | #define TAG_IMAGE_DESCRIPTION 0x010E |
| 94 | #define TAG_MAKE 0x010F |
| 95 | #define TAG_MODEL 0x0110 |
| 96 | #define TAG_SRIP_OFFSET 0x0111 |
| 97 | #define TAG_ORIENTATION 0x0112 |
| 98 | #define TAG_SAMPLES_PER_PIXEL 0x0115 |
| 99 | #define TAG_ROWS_PER_STRIP 0x0116 |
| 100 | #define TAG_STRIP_BYTE_COUNTS 0x0117 |
| 101 | #define TAG_X_RESOLUTION 0x011A |
| 102 | #define TAG_Y_RESOLUTION 0x011B |
| 103 | #define TAG_PLANAR_CONFIGURATION 0x011C |
| 104 | #define TAG_RESOLUTION_UNIT 0x0128 |
| 105 | #define TAG_TRANSFER_FUNCTION 0x012D |
| 106 | #define TAG_SOFTWARE 0x0131 |
| 107 | #define TAG_DATETIME 0x0132 |
| 108 | #define TAG_ARTIST 0x013B |
| 109 | #define TAG_WHITE_POINT 0x013E |
| 110 | #define TAG_PRIMARY_CHROMATICITIES 0x013F |
| 111 | #define TAG_TRANSFER_RANGE 0x0156 |
| 112 | #define TAG_JPEG_PROC 0x0200 |
| 113 | #define TAG_THUMBNAIL_OFFSET 0x0201 |
| 114 | #define TAG_THUMBNAIL_LENGTH 0x0202 |
| 115 | #define TAG_Y_CB_CR_COEFFICIENTS 0x0211 |
| 116 | #define TAG_Y_CB_CR_SUB_SAMPLING 0x0212 |
| 117 | #define TAG_Y_CB_CR_POSITIONING 0x0213 |
| 118 | #define TAG_REFERENCE_BLACK_WHITE 0x0214 |
| 119 | #define TAG_RELATED_IMAGE_WIDTH 0x1001 |
| 120 | #define TAG_RELATED_IMAGE_LENGTH 0x1002 |
| 121 | #define TAG_CFA_REPEAT_PATTERN_DIM 0x828D |
| 122 | #define TAG_CFA_PATTERN1 0x828E |
| 123 | #define TAG_BATTERY_LEVEL 0x828F |
| 124 | #define TAG_COPYRIGHT 0x8298 |
| 125 | #define TAG_EXPOSURETIME 0x829A |
| 126 | #define TAG_FNUMBER 0x829D |
| 127 | #define TAG_IPTC_NAA 0x83BB |
| 128 | #define TAG_EXIF_OFFSET 0x8769 |
| 129 | #define TAG_INTER_COLOR_PROFILE 0x8773 |
| 130 | #define TAG_EXPOSURE_PROGRAM 0x8822 |
| 131 | #define TAG_SPECTRAL_SENSITIVITY 0x8824 |
| 132 | #define TAG_GPSINFO 0x8825 |
| 133 | #define TAG_ISO_EQUIVALENT 0x8827 |
| 134 | #define TAG_OECF 0x8828 |
| 135 | #define TAG_EXIF_VERSION 0x9000 |
| 136 | #define TAG_DATETIME_ORIGINAL 0x9003 |
| 137 | #define TAG_DATETIME_DIGITIZED 0x9004 |
| 138 | #define TAG_COMPONENTS_CONFIG 0x9101 |
| 139 | #define TAG_CPRS_BITS_PER_PIXEL 0x9102 |
| 140 | #define TAG_SHUTTERSPEED 0x9201 |
| 141 | #define TAG_APERTURE 0x9202 |
| 142 | #define TAG_BRIGHTNESS_VALUE 0x9203 |
| 143 | #define TAG_EXPOSURE_BIAS 0x9204 |
| 144 | #define TAG_MAXAPERTURE 0x9205 |
| 145 | #define TAG_SUBJECT_DISTANCE 0x9206 |
| 146 | #define TAG_METERING_MODE 0x9207 |
| 147 | #define TAG_LIGHT_SOURCE 0x9208 |
| 148 | #define TAG_FLASH 0x9209 |
| 149 | #define TAG_FOCALLENGTH 0x920A |
| 150 | #define TAG_MAKER_NOTE 0x927C |
| 151 | #define TAG_USERCOMMENT 0x9286 |
| 152 | #define TAG_SUBSEC_TIME 0x9290 |
| 153 | #define TAG_SUBSEC_TIME_ORIG 0x9291 |
| 154 | #define TAG_SUBSEC_TIME_DIG 0x9292 |
| 155 | |
| 156 | #define TAG_WINXP_TITLE 0x9c9b // Windows XP - not part of exif standard. |
| 157 | #define TAG_WINXP_COMMENT 0x9c9c // Windows XP - not part of exif standard. |
| 158 | #define TAG_WINXP_AUTHOR 0x9c9d // Windows XP - not part of exif standard. |
| 159 | #define TAG_WINXP_KEYWORDS 0x9c9e // Windows XP - not part of exif standard. |
| 160 | #define TAG_WINXP_SUBJECT 0x9c9f // Windows XP - not part of exif standard. |
| 161 | |
| 162 | #define TAG_FLASH_PIX_VERSION 0xA000 |
| 163 | #define TAG_COLOR_SPACE 0xA001 |
| 164 | #define TAG_EXIF_IMAGEWIDTH 0xA002 |
| 165 | #define TAG_EXIF_IMAGELENGTH 0xA003 |
| 166 | #define TAG_RELATED_AUDIO_FILE 0xA004 |
| 167 | #define TAG_INTEROP_OFFSET 0xA005 |
| 168 | #define TAG_FLASH_ENERGY 0xA20B |
| 169 | #define TAG_SPATIAL_FREQ_RESP 0xA20C |
| 170 | #define TAG_FOCAL_PLANE_XRES 0xA20E |
| 171 | #define TAG_FOCAL_PLANE_YRES 0xA20F |
| 172 | #define TAG_FOCAL_PLANE_UNITS 0xA210 |
| 173 | #define TAG_SUBJECT_LOCATION 0xA214 |
| 174 | #define TAG_EXPOSURE_INDEX 0xA215 |
| 175 | #define TAG_SENSING_METHOD 0xA217 |
| 176 | #define TAG_FILE_SOURCE 0xA300 |
| 177 | #define TAG_SCENE_TYPE 0xA301 |
| 178 | #define TAG_CFA_PATTERN 0xA302 |
| 179 | #define TAG_CUSTOM_RENDERED 0xA401 |
| 180 | #define TAG_EXPOSURE_MODE 0xA402 |
| 181 | #define TAG_WHITEBALANCE 0xA403 |
| 182 | #define TAG_DIGITALZOOMRATIO 0xA404 |
| 183 | #define TAG_FOCALLENGTH_35MM 0xA405 |
| 184 | #define TAG_SCENE_CAPTURE_TYPE 0xA406 |
| 185 | #define TAG_GAIN_CONTROL 0xA407 |
| 186 | #define TAG_CONTRAST 0xA408 |
| 187 | #define TAG_SATURATION 0xA409 |
| 188 | #define TAG_SHARPNESS 0xA40A |
| 189 | #define TAG_DISTANCE_RANGE 0xA40C |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 190 | |
| 191 | // TODO: replace the ", 0" values in this table with the correct format, e.g. ", FMT_USHORT" |
| 192 | static const TagTable_t TagTable[] = { |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 193 | { TAG_INTEROP_INDEX, "InteropIndex", 0, 0}, |
| 194 | { TAG_INTEROP_VERSION, "InteropVersion", 0, 0}, |
| 195 | { TAG_IMAGE_WIDTH, "ImageWidth", FMT_USHORT, 1}, |
| 196 | { TAG_IMAGE_LENGTH, "ImageLength", FMT_USHORT, 1}, |
| 197 | { TAG_BITS_PER_SAMPLE, "BitsPerSample", FMT_USHORT, 3}, |
| 198 | { TAG_COMPRESSION, "Compression", FMT_USHORT, 1}, |
| 199 | { TAG_PHOTOMETRIC_INTERP, "PhotometricInterpretation", FMT_USHORT, 1}, |
| 200 | { TAG_FILL_ORDER, "FillOrder", 0, 0}, |
| 201 | { TAG_DOCUMENT_NAME, "DocumentName", 0, 0}, |
| 202 | { TAG_IMAGE_DESCRIPTION, "ImageDescription", 0, 0 }, |
| 203 | { TAG_MAKE, "Make", FMT_STRING, -1}, |
| 204 | { TAG_MODEL, "Model", FMT_STRING, -1}, |
| 205 | { TAG_SRIP_OFFSET, "StripOffsets", FMT_USHORT, 1}, |
| 206 | { TAG_ORIENTATION, "Orientation", FMT_USHORT, 1}, |
| 207 | { TAG_SAMPLES_PER_PIXEL, "SamplesPerPixel", FMT_USHORT, 3}, |
| 208 | { TAG_ROWS_PER_STRIP, "RowsPerStrip", FMT_USHORT, 1}, |
| 209 | { TAG_STRIP_BYTE_COUNTS, "StripByteCounts", FMT_USHORT, 1}, |
| 210 | { TAG_X_RESOLUTION, "XResolution", FMT_URATIONAL, 1}, |
| 211 | { TAG_Y_RESOLUTION, "YResolution", FMT_URATIONAL, 1}, |
| 212 | { TAG_PLANAR_CONFIGURATION, "PlanarConfiguration", FMT_USHORT, 1}, |
| 213 | { TAG_RESOLUTION_UNIT, "ResolutionUnit", FMT_USHORT, 1}, |
| 214 | { TAG_TRANSFER_FUNCTION, "TransferFunction", FMT_USHORT, 768}, |
| 215 | { TAG_SOFTWARE, "Software", FMT_STRING, -1}, |
| 216 | { TAG_DATETIME, "DateTime", FMT_STRING, 20}, |
| 217 | { TAG_ARTIST, "Artist", FMT_STRING, -1}, |
| 218 | { TAG_WHITE_POINT, "WhitePoint", FMT_SRATIONAL, 2}, |
| 219 | { TAG_PRIMARY_CHROMATICITIES, "PrimaryChromaticities", FMT_SRATIONAL, 6}, |
| 220 | { TAG_TRANSFER_RANGE, "TransferRange", 0, 0}, |
| 221 | { TAG_JPEG_PROC, "JPEGProc", 0, 0}, |
| 222 | { TAG_THUMBNAIL_OFFSET, "ThumbnailOffset", 0, 0}, |
| 223 | { TAG_THUMBNAIL_LENGTH, "ThumbnailLength", 0, 0}, |
| 224 | { TAG_Y_CB_CR_COEFFICIENTS, "YCbCrCoefficients", FMT_SRATIONAL, 3}, |
| 225 | { TAG_Y_CB_CR_SUB_SAMPLING, "YCbCrSubSampling", FMT_USHORT, 2}, |
| 226 | { TAG_Y_CB_CR_POSITIONING, "YCbCrPositioning", FMT_USHORT, 1}, |
| 227 | { TAG_REFERENCE_BLACK_WHITE, "ReferenceBlackWhite", FMT_SRATIONAL, 6}, |
| 228 | { TAG_RELATED_IMAGE_WIDTH, "RelatedImageWidth", 0, 0}, |
| 229 | { TAG_RELATED_IMAGE_LENGTH, "RelatedImageLength", 0, 0}, |
| 230 | { TAG_CFA_REPEAT_PATTERN_DIM, "CFARepeatPatternDim", 0, 0}, |
| 231 | { TAG_CFA_PATTERN1, "CFAPattern", 0, 0}, |
| 232 | { TAG_BATTERY_LEVEL, "BatteryLevel", 0, 0}, |
| 233 | { TAG_COPYRIGHT, "Copyright", FMT_STRING, -1}, |
Tyler Luu | 7540780 | 2011-10-19 01:36:15 -0500 | [diff] [blame] | 234 | { TAG_EXPOSURETIME, "ExposureTime", FMT_SRATIONAL, 1}, |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 235 | { TAG_FNUMBER, "FNumber", FMT_SRATIONAL, 1}, |
| 236 | { TAG_IPTC_NAA, "IPTC/NAA", 0, 0}, |
| 237 | { TAG_EXIF_OFFSET, "ExifOffset", 0, 0}, |
| 238 | { TAG_INTER_COLOR_PROFILE, "InterColorProfile", 0, 0}, |
| 239 | { TAG_EXPOSURE_PROGRAM, "ExposureProgram", FMT_SSHORT, 1}, |
| 240 | { TAG_SPECTRAL_SENSITIVITY, "SpectralSensitivity", FMT_STRING, -1}, |
| 241 | { TAG_GPSINFO, "GPS Dir offset", 0, 0}, |
| 242 | { TAG_ISO_EQUIVALENT, "ISOSpeedRatings", FMT_SSHORT, -1}, |
| 243 | { TAG_OECF, "OECF", 0, 0}, |
| 244 | { TAG_EXIF_VERSION, "ExifVersion", FMT_BYTE, 4}, |
| 245 | { TAG_DATETIME_ORIGINAL, "DateTimeOriginal", FMT_STRING, 20}, |
| 246 | { TAG_DATETIME_DIGITIZED, "DateTimeDigitized", FMT_STRING, 20}, |
| 247 | { TAG_COMPONENTS_CONFIG, "ComponentsConfiguration", FMT_BYTE, 4}, |
| 248 | { TAG_CPRS_BITS_PER_PIXEL, "CompressedBitsPerPixel", FMT_SRATIONAL, 1}, |
| 249 | { TAG_SHUTTERSPEED, "ShutterSpeedValue", FMT_SRATIONAL, 1}, |
| 250 | { TAG_APERTURE, "ApertureValue", FMT_URATIONAL, 1}, |
| 251 | { TAG_BRIGHTNESS_VALUE, "BrightnessValue", FMT_SRATIONAL, 1}, |
| 252 | { TAG_EXPOSURE_BIAS, "ExposureBiasValue", FMT_SRATIONAL, 1}, |
| 253 | { TAG_MAXAPERTURE, "MaxApertureValue", FMT_URATIONAL, 1}, |
| 254 | { TAG_SUBJECT_DISTANCE, "SubjectDistance", FMT_URATIONAL, 1}, |
| 255 | { TAG_METERING_MODE, "MeteringMode", FMT_USHORT, 1}, |
| 256 | { TAG_LIGHT_SOURCE, "LightSource", FMT_USHORT, 1}, |
| 257 | { TAG_FLASH, "Flash", FMT_USHORT, 1}, |
| 258 | { TAG_FOCALLENGTH, "FocalLength", FMT_URATIONAL, 1}, |
| 259 | { TAG_MAKER_NOTE, "MakerNote", FMT_STRING, -1}, |
| 260 | { TAG_USERCOMMENT, "UserComment", FMT_STRING, -1}, |
| 261 | { TAG_SUBSEC_TIME, "SubSecTime", FMT_STRING, -1}, |
| 262 | { TAG_SUBSEC_TIME_ORIG, "SubSecTimeOriginal", FMT_STRING, -1}, |
| 263 | { TAG_SUBSEC_TIME_DIG, "SubSecTimeDigitized", FMT_STRING, -1}, |
| 264 | { TAG_WINXP_TITLE, "Windows-XP Title", 0, 0}, |
| 265 | { TAG_WINXP_COMMENT, "Windows-XP comment", 0, 0}, |
| 266 | { TAG_WINXP_AUTHOR, "Windows-XP author", 0, 0}, |
| 267 | { TAG_WINXP_KEYWORDS, "Windows-XP keywords", 0, 0}, |
| 268 | { TAG_WINXP_SUBJECT, "Windows-XP subject", 0, 0}, |
| 269 | { TAG_FLASH_PIX_VERSION, "FlashPixVersion", FMT_BYTE, 4}, |
| 270 | { TAG_COLOR_SPACE, "ColorSpace", FMT_USHORT, 1}, |
| 271 | { TAG_EXIF_IMAGEWIDTH, "ExifImageWidth", 0, 0}, |
| 272 | { TAG_EXIF_IMAGELENGTH, "ExifImageLength", 0, 0}, |
| 273 | { TAG_RELATED_AUDIO_FILE, "RelatedAudioFile", 0, 0}, |
| 274 | { TAG_INTEROP_OFFSET, "InteroperabilityOffset", 0, 0}, |
| 275 | { TAG_FLASH_ENERGY, "FlashEnergy", FMT_URATIONAL, 1}, |
| 276 | { TAG_SPATIAL_FREQ_RESP, "SpatialFrequencyResponse", FMT_STRING, -1}, |
| 277 | { TAG_FOCAL_PLANE_XRES, "FocalPlaneXResolution", FMT_URATIONAL, 1}, |
| 278 | { TAG_FOCAL_PLANE_YRES, "FocalPlaneYResolution", FMT_URATIONAL, 1}, |
| 279 | { TAG_FOCAL_PLANE_UNITS, "FocalPlaneResolutionUnit", FMT_USHORT, 1}, |
| 280 | { TAG_SUBJECT_LOCATION, "SubjectLocation", FMT_USHORT, 2}, |
| 281 | { TAG_EXPOSURE_INDEX, "ExposureIndex", FMT_URATIONAL, 1}, |
| 282 | { TAG_SENSING_METHOD, "SensingMethod", FMT_USHORT, 1}, |
| 283 | { TAG_FILE_SOURCE, "FileSource", 0, 1}, |
| 284 | { TAG_SCENE_TYPE, "SceneType", 0, 1}, |
| 285 | { TAG_CFA_PATTERN, "CFA Pattern", 0, -1}, |
| 286 | { TAG_CUSTOM_RENDERED, "CustomRendered", FMT_USHORT, 1}, |
| 287 | { TAG_EXPOSURE_MODE, "ExposureMode", FMT_USHORT, 1}, |
| 288 | { TAG_WHITEBALANCE, "WhiteBalance", FMT_USHORT, 1}, |
| 289 | { TAG_DIGITALZOOMRATIO, "DigitalZoomRatio", FMT_URATIONAL, 1}, |
| 290 | { TAG_FOCALLENGTH_35MM, "FocalLengthIn35mmFilm", FMT_USHORT, 1}, |
| 291 | { TAG_SCENE_CAPTURE_TYPE, "SceneCaptureType", FMT_USHORT, 1}, |
| 292 | { TAG_GAIN_CONTROL, "GainControl", FMT_URATIONAL, 1}, |
| 293 | { TAG_CONTRAST, "Contrast", FMT_USHORT, 1}, |
| 294 | { TAG_SATURATION, "Saturation", FMT_USHORT, 1}, |
| 295 | { TAG_SHARPNESS, "Sharpness", FMT_USHORT, 1}, |
| 296 | { TAG_DISTANCE_RANGE, "SubjectDistanceRange", FMT_USHORT, 1}, |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 297 | } ; |
| 298 | |
| 299 | #define TAG_TABLE_SIZE (sizeof(TagTable) / sizeof(TagTable_t)) |
| 300 | |
| 301 | int TagNameToValue(const char* tagName) |
| 302 | { |
| 303 | unsigned int i; |
| 304 | for (i = 0; i < TAG_TABLE_SIZE; i++) { |
| 305 | if (strcmp(TagTable[i].Desc, tagName) == 0) { |
| 306 | printf("found tag %s val %d", TagTable[i].Desc, TagTable[i].Tag); |
| 307 | return TagTable[i].Tag; |
| 308 | } |
| 309 | } |
| 310 | printf("tag %s NOT FOUND", tagName); |
| 311 | return -1; |
| 312 | } |
| 313 | |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 314 | int IsDateTimeTag(unsigned short tag) |
| 315 | { |
| 316 | return ((tag == TAG_DATETIME)? TRUE: FALSE); |
| 317 | } |
| 318 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 319 | //-------------------------------------------------------------------------- |
| 320 | // Convert a 16 bit unsigned value to file's native byte order |
| 321 | //-------------------------------------------------------------------------- |
| 322 | static void Put16u(void * Short, unsigned short PutValue) |
| 323 | { |
| 324 | if (MotorolaOrder){ |
| 325 | ((uchar *)Short)[0] = (uchar)(PutValue>>8); |
| 326 | ((uchar *)Short)[1] = (uchar)PutValue; |
| 327 | }else{ |
| 328 | ((uchar *)Short)[0] = (uchar)PutValue; |
| 329 | ((uchar *)Short)[1] = (uchar)(PutValue>>8); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | //-------------------------------------------------------------------------- |
| 334 | // Convert a 16 bit unsigned value from file's native byte order |
| 335 | //-------------------------------------------------------------------------- |
| 336 | int Get16u(void * Short) |
| 337 | { |
| 338 | if (MotorolaOrder){ |
| 339 | return (((uchar *)Short)[0] << 8) | ((uchar *)Short)[1]; |
| 340 | }else{ |
| 341 | return (((uchar *)Short)[1] << 8) | ((uchar *)Short)[0]; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | //-------------------------------------------------------------------------- |
| 346 | // Convert a 32 bit signed value from file's native byte order |
| 347 | //-------------------------------------------------------------------------- |
| 348 | int Get32s(void * Long) |
| 349 | { |
| 350 | if (MotorolaOrder){ |
| 351 | return ((( char *)Long)[0] << 24) | (((uchar *)Long)[1] << 16) |
| 352 | | (((uchar *)Long)[2] << 8 ) | (((uchar *)Long)[3] << 0 ); |
| 353 | }else{ |
| 354 | return ((( char *)Long)[3] << 24) | (((uchar *)Long)[2] << 16) |
| 355 | | (((uchar *)Long)[1] << 8 ) | (((uchar *)Long)[0] << 0 ); |
| 356 | } |
| 357 | } |
| 358 | |
| 359 | //-------------------------------------------------------------------------- |
| 360 | // Convert a 32 bit unsigned value to file's native byte order |
| 361 | //-------------------------------------------------------------------------- |
| 362 | void Put32u(void * Value, unsigned PutValue) |
| 363 | { |
| 364 | if (MotorolaOrder){ |
| 365 | ((uchar *)Value)[0] = (uchar)(PutValue>>24); |
| 366 | ((uchar *)Value)[1] = (uchar)(PutValue>>16); |
| 367 | ((uchar *)Value)[2] = (uchar)(PutValue>>8); |
| 368 | ((uchar *)Value)[3] = (uchar)PutValue; |
| 369 | }else{ |
| 370 | ((uchar *)Value)[0] = (uchar)PutValue; |
| 371 | ((uchar *)Value)[1] = (uchar)(PutValue>>8); |
| 372 | ((uchar *)Value)[2] = (uchar)(PutValue>>16); |
| 373 | ((uchar *)Value)[3] = (uchar)(PutValue>>24); |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | //-------------------------------------------------------------------------- |
| 378 | // Convert a 32 bit unsigned value from file's native byte order |
| 379 | //-------------------------------------------------------------------------- |
| 380 | unsigned Get32u(void * Long) |
| 381 | { |
| 382 | return (unsigned)Get32s(Long) & 0xffffffff; |
| 383 | } |
| 384 | |
| 385 | //-------------------------------------------------------------------------- |
| 386 | // Display a number as one of its many formats |
| 387 | //-------------------------------------------------------------------------- |
| 388 | void PrintFormatNumber(void * ValuePtr, int Format, int ByteCount) |
| 389 | { |
| 390 | int s,n; |
| 391 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 392 | for(n=0;n<16;n++){ |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 393 | switch(Format){ |
| 394 | case FMT_SBYTE: |
| 395 | case FMT_BYTE: printf("%02x",*(uchar *)ValuePtr); s=1; break; |
| 396 | case FMT_USHORT: printf("%d",Get16u(ValuePtr)); s=2; break; |
| 397 | case FMT_ULONG: |
| 398 | case FMT_SLONG: printf("%d",Get32s(ValuePtr)); s=4; break; |
| 399 | case FMT_SSHORT: printf("%hd",(signed short)Get16u(ValuePtr)); s=2; break; |
| 400 | case FMT_URATIONAL: |
| 401 | case FMT_SRATIONAL: |
| 402 | printf("%d/%d",Get32s(ValuePtr), Get32s(4+(char *)ValuePtr)); |
| 403 | s = 8; |
| 404 | break; |
| 405 | |
| 406 | case FMT_SINGLE: printf("%f",(double)*(float *)ValuePtr); s=8; break; |
| 407 | case FMT_DOUBLE: printf("%f",*(double *)ValuePtr); s=8; break; |
| 408 | default: |
| 409 | printf("Unknown format %d:", Format); |
| 410 | return; |
| 411 | } |
| 412 | ByteCount -= s; |
| 413 | if (ByteCount <= 0) break; |
| 414 | printf(", "); |
| 415 | ValuePtr = (void *)((char *)ValuePtr + s); |
| 416 | |
| 417 | } |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 418 | if (n >= 16) printf("..."); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 419 | } |
| 420 | |
| 421 | |
| 422 | //-------------------------------------------------------------------------- |
| 423 | // Evaluate number, be it int, rational, or float from directory. |
| 424 | //-------------------------------------------------------------------------- |
| 425 | double ConvertAnyFormat(void * ValuePtr, int Format) |
| 426 | { |
| 427 | double Value; |
| 428 | Value = 0; |
| 429 | |
| 430 | switch(Format){ |
| 431 | case FMT_SBYTE: Value = *(signed char *)ValuePtr; break; |
| 432 | case FMT_BYTE: Value = *(uchar *)ValuePtr; break; |
| 433 | |
| 434 | case FMT_USHORT: Value = Get16u(ValuePtr); break; |
| 435 | case FMT_ULONG: Value = Get32u(ValuePtr); break; |
| 436 | |
| 437 | case FMT_URATIONAL: |
| 438 | case FMT_SRATIONAL: |
| 439 | { |
| 440 | int Num,Den; |
| 441 | Num = Get32s(ValuePtr); |
| 442 | Den = Get32s(4+(char *)ValuePtr); |
| 443 | if (Den == 0){ |
| 444 | Value = 0; |
| 445 | }else{ |
| 446 | Value = (double)Num/Den; |
| 447 | } |
| 448 | break; |
| 449 | } |
| 450 | |
| 451 | case FMT_SSHORT: Value = (signed short)Get16u(ValuePtr); break; |
| 452 | case FMT_SLONG: Value = Get32s(ValuePtr); break; |
| 453 | |
| 454 | // Not sure if this is correct (never seen float used in Exif format) |
| 455 | case FMT_SINGLE: Value = (double)*(float *)ValuePtr; break; |
| 456 | case FMT_DOUBLE: Value = *(double *)ValuePtr; break; |
| 457 | |
| 458 | default: |
| 459 | ErrNonfatal("Illegal format code %d",Format,0); |
| 460 | } |
| 461 | return Value; |
| 462 | } |
| 463 | |
| 464 | //-------------------------------------------------------------------------- |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 465 | // Convert a double value into a signed or unsigned rational number. |
| 466 | //-------------------------------------------------------------------------- |
| 467 | static void float2urat(double value, unsigned int max, unsigned int *numerator, |
| 468 | unsigned int *denominator) { |
| 469 | if (value <= 0) { |
| 470 | *numerator = 0; |
| 471 | *denominator = 1; |
| 472 | return; |
| 473 | } |
| 474 | |
| 475 | if (value > max) { |
| 476 | *numerator = max; |
| 477 | *denominator = 1; |
| 478 | return; |
| 479 | } |
| 480 | |
| 481 | // For values less than 1e-9, scale as much as possible |
| 482 | if (value < 1e-9) { |
| 483 | unsigned int n = (unsigned int)(value * max); |
| 484 | if (n == 0) { |
| 485 | *numerator = 0; |
| 486 | *denominator = 1; |
| 487 | } else { |
| 488 | *numerator = n; |
| 489 | *denominator = max; |
| 490 | } |
| 491 | return; |
| 492 | } |
| 493 | |
| 494 | // Try to use a denominator of 1e9, 1e8, ..., until the numerator fits |
| 495 | unsigned int d; |
| 496 | for (d = 1000000000; d >= 1; d /= 10) { |
| 497 | double s = value * d; |
| 498 | if (s <= max) { |
| 499 | // Remove the trailing zeros from both. |
| 500 | unsigned int n = (unsigned int)s; |
| 501 | while (n % 10 == 0 && d >= 10) { |
| 502 | n /= 10; |
| 503 | d /= 10; |
| 504 | } |
| 505 | *numerator = n; |
| 506 | *denominator = d; |
| 507 | return; |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | // Shouldn't reach here because the denominator 1 should work |
| 512 | // above. But just in case. |
| 513 | *numerator = 0; |
| 514 | *denominator = 1; |
| 515 | } |
| 516 | |
| 517 | static void ConvertDoubleToURational(double value, unsigned int *numerator, |
| 518 | unsigned int *denominator) { |
| 519 | float2urat(value, 0xFFFFFFFFU, numerator, denominator); |
| 520 | } |
| 521 | |
| 522 | static void ConvertDoubleToSRational(double value, int *numerator, |
| 523 | int *denominator) { |
| 524 | int negative = 0; |
| 525 | |
| 526 | if (value < 0) { |
| 527 | value = -value; |
| 528 | negative = 1; |
| 529 | } |
| 530 | |
| 531 | unsigned int n, d; |
| 532 | float2urat(value, 0x7FFFFFFFU, &n, &d); |
| 533 | *numerator = (int)n; |
| 534 | *denominator = (int)d; |
| 535 | if (negative) { |
| 536 | *numerator = -*numerator; |
| 537 | } |
| 538 | } |
| 539 | |
| 540 | //-------------------------------------------------------------------------- |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 541 | // Process one of the nested EXIF directories. |
| 542 | //-------------------------------------------------------------------------- |
| 543 | static void ProcessExifDir(unsigned char * DirStart, unsigned char * OffsetBase, |
| 544 | unsigned ExifLength, int NestingLevel) |
| 545 | { |
| 546 | int de; |
| 547 | int a; |
| 548 | int NumDirEntries; |
| 549 | unsigned ThumbnailOffset = 0; |
| 550 | unsigned ThumbnailSize = 0; |
| 551 | char IndentString[25]; |
| 552 | |
| 553 | printf("ProcessExifDir"); |
| 554 | if (NestingLevel > 4){ |
| 555 | ErrNonfatal("Maximum directory nesting exceeded (corrupt exif header)", 0,0); |
| 556 | return; |
| 557 | } |
| 558 | |
| 559 | memset(IndentString, ' ', 25); |
| 560 | IndentString[NestingLevel * 4] = '\0'; |
| 561 | |
| 562 | |
| 563 | NumDirEntries = Get16u(DirStart); |
| 564 | #define DIR_ENTRY_ADDR(Start, Entry) (Start+2+12*(Entry)) |
| 565 | |
| 566 | { |
| 567 | unsigned char * DirEnd; |
| 568 | DirEnd = DIR_ENTRY_ADDR(DirStart, NumDirEntries); |
| 569 | if (DirEnd+4 > (OffsetBase+ExifLength)){ |
| 570 | if (DirEnd+2 == OffsetBase+ExifLength || DirEnd == OffsetBase+ExifLength){ |
| 571 | // Version 1.3 of jhead would truncate a bit too much. |
| 572 | // This also caught later on as well. |
| 573 | }else{ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 574 | ErrNonfatal("Illegally sized exif subdirectory (%d entries)",NumDirEntries,0); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 575 | return; |
| 576 | } |
| 577 | } |
| 578 | if (DumpExifMap){ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 579 | printf("Map: %05d-%05d: Directory\n",(int)(DirStart-OffsetBase), (int)(DirEnd+4-OffsetBase)); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 580 | } |
| 581 | |
| 582 | |
| 583 | } |
| 584 | |
| 585 | if (ShowTags){ |
| 586 | printf("(dir has %d entries)\n",NumDirEntries); |
| 587 | } |
| 588 | |
| 589 | for (de=0;de<NumDirEntries;de++){ |
| 590 | int Tag, Format, Components; |
| 591 | unsigned char * ValuePtr; |
| 592 | int ByteCount; |
| 593 | unsigned char * DirEntry; |
| 594 | DirEntry = DIR_ENTRY_ADDR(DirStart, de); |
| 595 | |
| 596 | Tag = Get16u(DirEntry); |
| 597 | Format = Get16u(DirEntry+2); |
| 598 | Components = Get32u(DirEntry+4); |
| 599 | |
| 600 | if ((Format-1) >= NUM_FORMATS) { |
| 601 | // (-1) catches illegal zero case as unsigned underflows to positive large. |
| 602 | ErrNonfatal("Illegal number format %d for tag %04x", Format, Tag); |
| 603 | continue; |
| 604 | } |
| 605 | |
| 606 | if ((unsigned)Components > 0x10000){ |
| 607 | ErrNonfatal("Illegal number of components %d for tag %04x", Components, Tag); |
| 608 | continue; |
| 609 | } |
| 610 | |
| 611 | ByteCount = Components * BytesPerFormat[Format]; |
| 612 | |
| 613 | if (ByteCount > 4){ |
| 614 | unsigned OffsetVal; |
| 615 | OffsetVal = Get32u(DirEntry+8); |
| 616 | // If its bigger than 4 bytes, the dir entry contains an offset. |
Marco Nelissen | d0dbe63 | 2016-06-09 14:07:50 -0700 | [diff] [blame] | 617 | if (OffsetVal > UINT32_MAX - ByteCount || OffsetVal+ByteCount > ExifLength){ |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 618 | // Bogus pointer offset and / or bytecount value |
| 619 | ErrNonfatal("Illegal value pointer for tag %04x", Tag,0); |
| 620 | continue; |
| 621 | } |
| 622 | ValuePtr = OffsetBase+OffsetVal; |
| 623 | |
| 624 | if (OffsetVal > ImageInfo.LargestExifOffset){ |
| 625 | ImageInfo.LargestExifOffset = OffsetVal; |
| 626 | } |
| 627 | |
| 628 | if (DumpExifMap){ |
| 629 | printf("Map: %05d-%05d: Data for tag %04x\n",OffsetVal, OffsetVal+ByteCount, Tag); |
| 630 | } |
| 631 | }else{ |
| 632 | // 4 bytes or less and value is in the dir entry itself |
| 633 | ValuePtr = DirEntry+8; |
| 634 | } |
| 635 | |
| 636 | if (Tag == TAG_MAKER_NOTE){ |
| 637 | if (ShowTags){ |
| 638 | printf("%s Maker note: ",IndentString); |
| 639 | } |
| 640 | ProcessMakerNote(ValuePtr, ByteCount, OffsetBase, ExifLength); |
| 641 | continue; |
| 642 | } |
| 643 | |
| 644 | if (ShowTags){ |
| 645 | // Show tag name |
| 646 | for (a=0;;a++){ |
| 647 | if (a >= (int)TAG_TABLE_SIZE){ |
Nick Kralevich | 70059dd | 2010-05-14 11:48:59 -0700 | [diff] [blame] | 648 | printf("%s", IndentString); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 649 | printf(" Unknown Tag %04x Value = ", Tag); |
| 650 | break; |
| 651 | } |
| 652 | if (TagTable[a].Tag == Tag){ |
Nick Kralevich | 70059dd | 2010-05-14 11:48:59 -0700 | [diff] [blame] | 653 | printf("%s", IndentString); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 654 | printf(" %s = ",TagTable[a].Desc); |
| 655 | break; |
| 656 | } |
| 657 | } |
| 658 | |
| 659 | // Show tag value. |
| 660 | switch(Format){ |
| 661 | case FMT_BYTE: |
| 662 | if(ByteCount>1){ |
| 663 | printf("%.*ls\n", ByteCount/2, (wchar_t *)ValuePtr); |
| 664 | }else{ |
| 665 | PrintFormatNumber(ValuePtr, Format, ByteCount); |
| 666 | printf("\n"); |
| 667 | } |
| 668 | break; |
| 669 | |
| 670 | case FMT_UNDEFINED: |
| 671 | // Undefined is typically an ascii string. |
| 672 | |
| 673 | case FMT_STRING: |
| 674 | // String arrays printed without function call (different from int arrays) |
| 675 | { |
| 676 | printf("\"%s\"", ValuePtr); |
| 677 | // int NoPrint = 0; |
| 678 | // printf("\""); |
| 679 | // for (a=0;a<ByteCount;a++){ |
| 680 | // if (ValuePtr[a] >= 32){ |
| 681 | // putchar(ValuePtr[a]); |
| 682 | // NoPrint = 0; |
| 683 | // }else{ |
| 684 | // // Avoiding indicating too many unprintable characters of proprietary |
| 685 | // // bits of binary information this program may not know how to parse. |
| 686 | // if (!NoPrint && a != ByteCount-1){ |
| 687 | // putchar('?'); |
| 688 | // NoPrint = 1; |
| 689 | // } |
| 690 | // } |
| 691 | // } |
| 692 | // printf("\"\n"); |
| 693 | } |
| 694 | break; |
| 695 | |
| 696 | default: |
| 697 | // Handle arrays of numbers later (will there ever be?) |
| 698 | PrintFormatNumber(ValuePtr, Format, ByteCount); |
| 699 | printf("\n"); |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | // Extract useful components of tag |
| 704 | switch(Tag){ |
| 705 | |
| 706 | case TAG_MAKE: |
| 707 | strncpy(ImageInfo.CameraMake, (char *)ValuePtr, ByteCount < 31 ? ByteCount : 31); |
| 708 | break; |
| 709 | |
| 710 | case TAG_MODEL: |
| 711 | strncpy(ImageInfo.CameraModel, (char *)ValuePtr, ByteCount < 39 ? ByteCount : 39); |
| 712 | break; |
| 713 | |
Zhijun He | 76aba45 | 2013-11-22 18:09:28 -0800 | [diff] [blame] | 714 | case TAG_SUBSEC_TIME: |
| 715 | strlcpy(ImageInfo.SubSecTime, (char *)ValuePtr, sizeof(ImageInfo.SubSecTime)); |
| 716 | break; |
| 717 | |
| 718 | case TAG_SUBSEC_TIME_ORIG: |
| 719 | strlcpy(ImageInfo.SubSecTimeOrig, (char *)ValuePtr, |
| 720 | sizeof(ImageInfo.SubSecTimeOrig)); |
| 721 | break; |
| 722 | |
| 723 | case TAG_SUBSEC_TIME_DIG: |
| 724 | strlcpy(ImageInfo.SubSecTimeDig, (char *)ValuePtr, |
| 725 | sizeof(ImageInfo.SubSecTimeDig)); |
| 726 | break; |
| 727 | |
| 728 | case TAG_DATETIME_DIGITIZED: |
| 729 | strlcpy(ImageInfo.DigitizedTime, (char *)ValuePtr, |
| 730 | sizeof(ImageInfo.DigitizedTime)); |
| 731 | |
| 732 | if (ImageInfo.numDateTimeTags >= MAX_DATE_COPIES){ |
| 733 | ErrNonfatal("More than %d date fields! This is nuts", MAX_DATE_COPIES, 0); |
| 734 | break; |
| 735 | } |
| 736 | ImageInfo.DateTimeOffsets[ImageInfo.numDateTimeTags++] = |
| 737 | (char *)ValuePtr - (char *)OffsetBase; |
| 738 | break; |
| 739 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 740 | case TAG_DATETIME_ORIGINAL: |
| 741 | // If we get a DATETIME_ORIGINAL, we use that one. |
| 742 | strncpy(ImageInfo.DateTime, (char *)ValuePtr, 19); |
| 743 | // Fallthru... |
| 744 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 745 | case TAG_DATETIME: |
| 746 | if (!isdigit(ImageInfo.DateTime[0])){ |
| 747 | // If we don't already have a DATETIME_ORIGINAL, use whatever |
| 748 | // time fields we may have. |
| 749 | strncpy(ImageInfo.DateTime, (char *)ValuePtr, 19); |
| 750 | } |
| 751 | |
| 752 | if (ImageInfo.numDateTimeTags >= MAX_DATE_COPIES){ |
| 753 | ErrNonfatal("More than %d date fields! This is nuts", MAX_DATE_COPIES, 0); |
| 754 | break; |
| 755 | } |
| 756 | ImageInfo.DateTimeOffsets[ImageInfo.numDateTimeTags++] = |
| 757 | (char *)ValuePtr - (char *)OffsetBase; |
| 758 | break; |
| 759 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 760 | case TAG_WINXP_COMMENT: |
| 761 | if (ImageInfo.Comments[0]){ // We already have a jpeg comment. |
| 762 | // Already have a comment (probably windows comment), skip this one. |
| 763 | if (ShowTags) printf("Windows XP commend and other comment in header\n"); |
| 764 | break; // Already have a windows comment, skip this one. |
| 765 | } |
| 766 | |
| 767 | if (ByteCount > 1){ |
| 768 | if (ByteCount > MAX_COMMENT_SIZE) ByteCount = MAX_COMMENT_SIZE; |
| 769 | memcpy(ImageInfo.Comments, ValuePtr, ByteCount); |
| 770 | ImageInfo.CommentWidchars = ByteCount/2; |
| 771 | } |
| 772 | break; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 773 | |
| 774 | case TAG_USERCOMMENT: |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 775 | if (ImageInfo.Comments[0]){ // We already have a jpeg comment. |
| 776 | // Already have a comment (probably windows comment), skip this one. |
| 777 | if (ShowTags) printf("Multiple comments in exif header\n"); |
| 778 | break; // Already have a windows comment, skip this one. |
| 779 | } |
| 780 | |
| 781 | // Comment is often padded with trailing spaces. Remove these first. |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 782 | for (a=ByteCount;;){ |
| 783 | a--; |
| 784 | if ((ValuePtr)[a] == ' '){ |
| 785 | (ValuePtr)[a] = '\0'; |
| 786 | }else{ |
| 787 | break; |
| 788 | } |
| 789 | if (a == 0) break; |
| 790 | } |
| 791 | |
| 792 | // Copy the comment |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 793 | { |
| 794 | // We want to set copied comment length (msize) to be the |
| 795 | // minimum of: |
| 796 | // (1) The space still available in Exif |
| 797 | // (2) The given comment length (ByteCount) |
| 798 | // (3) MAX_COMMENT_SIZE - 1 |
| 799 | int msiz = ExifLength - (ValuePtr-OffsetBase); |
| 800 | if (msiz > ByteCount) msiz = ByteCount; |
| 801 | if (msiz > MAX_COMMENT_SIZE - 1) msiz = MAX_COMMENT_SIZE - 1; |
| 802 | if (msiz > 5 && memcmp(ValuePtr, "ASCII", 5) == 0) { |
| 803 | for (a = 5; a < 10 && a < msiz; a++) { |
| 804 | int c = (ValuePtr)[a]; |
| 805 | if (c != '\0' && c != ' ') { |
| 806 | strncpy(ImageInfo.Comments, |
| 807 | (char *)ValuePtr + a, msiz - a); |
| 808 | break; |
| 809 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 810 | } |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 811 | } else { |
| 812 | strncpy(ImageInfo.Comments, (char *)ValuePtr, msiz); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 813 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 814 | } |
| 815 | break; |
| 816 | |
| 817 | case TAG_FNUMBER: |
| 818 | // Simplest way of expressing aperture, so I trust it the most. |
| 819 | // (overwrite previously computd value if there is one) |
| 820 | ImageInfo.ApertureFNumber = (float)ConvertAnyFormat(ValuePtr, Format); |
| 821 | break; |
| 822 | |
| 823 | case TAG_APERTURE: |
| 824 | case TAG_MAXAPERTURE: |
| 825 | // More relevant info always comes earlier, so only use this field if we don't |
| 826 | // have appropriate aperture information yet. |
| 827 | if (ImageInfo.ApertureFNumber == 0){ |
| 828 | ImageInfo.ApertureFNumber |
| 829 | = (float)exp(ConvertAnyFormat(ValuePtr, Format)*log(2)*0.5); |
| 830 | } |
| 831 | break; |
| 832 | |
| 833 | case TAG_FOCALLENGTH: |
| 834 | // Nice digital cameras actually save the focal length as a function |
| 835 | // of how farthey are zoomed in. |
Wu-cheng Li | 574d52d | 2010-01-31 22:34:33 +0800 | [diff] [blame] | 836 | ImageInfo.FocalLength.num = Get32u(ValuePtr); |
| 837 | ImageInfo.FocalLength.denom = Get32u(4+(char *)ValuePtr); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 838 | break; |
| 839 | |
| 840 | case TAG_SUBJECT_DISTANCE: |
| 841 | // Inidcates the distacne the autofocus camera is focused to. |
| 842 | // Tends to be less accurate as distance increases. |
| 843 | ImageInfo.Distance = (float)ConvertAnyFormat(ValuePtr, Format); |
| 844 | break; |
| 845 | |
| 846 | case TAG_EXPOSURETIME: |
| 847 | // Simplest way of expressing exposure time, so I trust it most. |
| 848 | // (overwrite previously computd value if there is one) |
| 849 | ImageInfo.ExposureTime = (float)ConvertAnyFormat(ValuePtr, Format); |
| 850 | break; |
| 851 | |
| 852 | case TAG_SHUTTERSPEED: |
| 853 | // More complicated way of expressing exposure time, so only use |
| 854 | // this value if we don't already have it from somewhere else. |
| 855 | if (ImageInfo.ExposureTime == 0){ |
| 856 | ImageInfo.ExposureTime |
| 857 | = (float)(1/exp(ConvertAnyFormat(ValuePtr, Format)*log(2))); |
| 858 | } |
| 859 | break; |
| 860 | |
| 861 | |
| 862 | case TAG_FLASH: |
| 863 | ImageInfo.FlashUsed=(int)ConvertAnyFormat(ValuePtr, Format); |
| 864 | break; |
| 865 | |
| 866 | case TAG_ORIENTATION: |
| 867 | if (NumOrientations >= 2){ |
| 868 | // Can have another orientation tag for the thumbnail, but if there's |
| 869 | // a third one, things are stringae. |
| 870 | ErrNonfatal("More than two orientation tags!",0,0); |
| 871 | break; |
| 872 | } |
| 873 | OrientationPtr[NumOrientations] = ValuePtr; |
| 874 | OrientationNumFormat[NumOrientations] = Format; |
| 875 | if (NumOrientations == 0){ |
| 876 | ImageInfo.Orientation = (int)ConvertAnyFormat(ValuePtr, Format); |
| 877 | } |
| 878 | if (ImageInfo.Orientation < 0 || ImageInfo.Orientation > 8){ |
| 879 | ErrNonfatal("Undefined rotation value %d", ImageInfo.Orientation, 0); |
| 880 | ImageInfo.Orientation = 0; |
| 881 | } |
| 882 | NumOrientations += 1; |
| 883 | break; |
| 884 | |
| 885 | case TAG_EXIF_IMAGELENGTH: |
| 886 | case TAG_EXIF_IMAGEWIDTH: |
| 887 | // Use largest of height and width to deal with images that have been |
| 888 | // rotated to portrait format. |
| 889 | a = (int)ConvertAnyFormat(ValuePtr, Format); |
| 890 | if (ExifImageWidth < a) ExifImageWidth = a; |
| 891 | break; |
| 892 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 893 | case TAG_FOCAL_PLANE_XRES: |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 894 | FocalplaneXRes = ConvertAnyFormat(ValuePtr, Format); |
| 895 | break; |
| 896 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 897 | case TAG_FOCAL_PLANE_UNITS: |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 898 | switch((int)ConvertAnyFormat(ValuePtr, Format)){ |
| 899 | case 1: FocalplaneUnits = 25.4; break; // inch |
| 900 | case 2: |
| 901 | // According to the information I was using, 2 means meters. |
| 902 | // But looking at the Cannon powershot's files, inches is the only |
| 903 | // sensible value. |
| 904 | FocalplaneUnits = 25.4; |
| 905 | break; |
| 906 | |
| 907 | case 3: FocalplaneUnits = 10; break; // centimeter |
| 908 | case 4: FocalplaneUnits = 1; break; // millimeter |
| 909 | case 5: FocalplaneUnits = .001; break; // micrometer |
| 910 | } |
| 911 | break; |
| 912 | |
| 913 | case TAG_EXPOSURE_BIAS: |
| 914 | ImageInfo.ExposureBias = (float)ConvertAnyFormat(ValuePtr, Format); |
| 915 | break; |
| 916 | |
| 917 | case TAG_WHITEBALANCE: |
| 918 | ImageInfo.Whitebalance = (int)ConvertAnyFormat(ValuePtr, Format); |
| 919 | break; |
| 920 | |
| 921 | case TAG_LIGHT_SOURCE: |
| 922 | ImageInfo.LightSource = (int)ConvertAnyFormat(ValuePtr, Format); |
| 923 | break; |
| 924 | |
| 925 | case TAG_METERING_MODE: |
| 926 | ImageInfo.MeteringMode = (int)ConvertAnyFormat(ValuePtr, Format); |
| 927 | break; |
| 928 | |
| 929 | case TAG_EXPOSURE_PROGRAM: |
| 930 | ImageInfo.ExposureProgram = (int)ConvertAnyFormat(ValuePtr, Format); |
| 931 | break; |
| 932 | |
| 933 | case TAG_EXPOSURE_INDEX: |
| 934 | if (ImageInfo.ISOequivalent == 0){ |
| 935 | // Exposure index and ISO equivalent are often used interchangeably, |
| 936 | // so we will do the same in jhead. |
| 937 | // http://photography.about.com/library/glossary/bldef_ei.htm |
| 938 | ImageInfo.ISOequivalent = (int)ConvertAnyFormat(ValuePtr, Format); |
| 939 | } |
| 940 | break; |
| 941 | |
| 942 | case TAG_EXPOSURE_MODE: |
| 943 | ImageInfo.ExposureMode = (int)ConvertAnyFormat(ValuePtr, Format); |
| 944 | break; |
| 945 | |
| 946 | case TAG_ISO_EQUIVALENT: |
| 947 | ImageInfo.ISOequivalent = (int)ConvertAnyFormat(ValuePtr, Format); |
| 948 | if ( ImageInfo.ISOequivalent < 50 ){ |
| 949 | // Fixes strange encoding on some older digicams. |
| 950 | ImageInfo.ISOequivalent *= 200; |
| 951 | } |
| 952 | break; |
| 953 | |
| 954 | case TAG_DIGITALZOOMRATIO: |
| 955 | ImageInfo.DigitalZoomRatio = (float)ConvertAnyFormat(ValuePtr, Format); |
| 956 | break; |
| 957 | |
| 958 | case TAG_THUMBNAIL_OFFSET: |
| 959 | ThumbnailOffset = (unsigned)ConvertAnyFormat(ValuePtr, Format); |
| 960 | DirWithThumbnailPtrs = DirStart; |
| 961 | break; |
| 962 | |
| 963 | case TAG_THUMBNAIL_LENGTH: |
| 964 | ThumbnailSize = (unsigned)ConvertAnyFormat(ValuePtr, Format); |
| 965 | ImageInfo.ThumbnailSizeOffset = ValuePtr-OffsetBase; |
| 966 | break; |
| 967 | |
| 968 | case TAG_EXIF_OFFSET: |
| 969 | if (ShowTags) printf("%s Exif Dir:",IndentString); |
| 970 | |
| 971 | case TAG_INTEROP_OFFSET: |
| 972 | if (Tag == TAG_INTEROP_OFFSET && ShowTags) printf("%s Interop Dir:",IndentString); |
| 973 | { |
| 974 | unsigned char * SubdirStart; |
| 975 | SubdirStart = OffsetBase + Get32u(ValuePtr); |
| 976 | if (SubdirStart < OffsetBase || SubdirStart > OffsetBase+ExifLength){ |
| 977 | ErrNonfatal("Illegal exif or interop ofset directory link",0,0); |
| 978 | }else{ |
| 979 | ProcessExifDir(SubdirStart, OffsetBase, ExifLength, NestingLevel+1); |
| 980 | } |
| 981 | continue; |
| 982 | } |
| 983 | break; |
| 984 | |
| 985 | case TAG_GPSINFO: |
| 986 | if (ShowTags) printf("%s GPS info dir:",IndentString); |
| 987 | { |
| 988 | unsigned char * SubdirStart; |
| 989 | SubdirStart = OffsetBase + Get32u(ValuePtr); |
| 990 | if (SubdirStart < OffsetBase || SubdirStart > OffsetBase+ExifLength){ |
| 991 | ErrNonfatal("Illegal GPS directory link",0,0); |
| 992 | }else{ |
| 993 | ProcessGpsInfo(SubdirStart, ByteCount, OffsetBase, ExifLength); |
| 994 | } |
| 995 | continue; |
| 996 | } |
| 997 | break; |
| 998 | |
| 999 | case TAG_FOCALLENGTH_35MM: |
| 1000 | // The focal length equivalent 35 mm is a 2.2 tag (defined as of April 2002) |
| 1001 | // if its present, use it to compute equivalent focal length instead of |
| 1002 | // computing it from sensor geometry and actual focal length. |
| 1003 | ImageInfo.FocalLength35mmEquiv = (unsigned)ConvertAnyFormat(ValuePtr, Format); |
| 1004 | break; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1005 | |
| 1006 | case TAG_DISTANCE_RANGE: |
| 1007 | // Three possible standard values: |
| 1008 | // 1 = macro, 2 = close, 3 = distant |
| 1009 | ImageInfo.DistanceRange = (int)ConvertAnyFormat(ValuePtr, Format); |
| 1010 | break; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | |
| 1015 | { |
| 1016 | // In addition to linking to subdirectories via exif tags, |
| 1017 | // there's also a potential link to another directory at the end of each |
| 1018 | // directory. this has got to be the result of a committee! |
| 1019 | unsigned char * SubdirStart; |
| 1020 | unsigned Offset; |
| 1021 | |
| 1022 | if (DIR_ENTRY_ADDR(DirStart, NumDirEntries) + 4 <= OffsetBase+ExifLength){ |
Qiming Shi | 1608baf | 2014-02-28 11:16:12 +0800 | [diff] [blame] | 1023 | printf("DirStart %p offset from dirstart %d", DirStart, 2+12*NumDirEntries); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1024 | Offset = Get32u(DirStart+2+12*NumDirEntries); |
| 1025 | if (Offset){ |
| 1026 | SubdirStart = OffsetBase + Offset; |
| 1027 | if (SubdirStart > OffsetBase+ExifLength || SubdirStart < OffsetBase){ |
Qiming Shi | 1608baf | 2014-02-28 11:16:12 +0800 | [diff] [blame] | 1028 | printf("SubdirStart %p OffsetBase %p ExifLength %d Offset %d", |
| 1029 | SubdirStart, OffsetBase, ExifLength, Offset); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1030 | if (SubdirStart > OffsetBase && SubdirStart < OffsetBase+ExifLength+20){ |
| 1031 | // Jhead 1.3 or earlier would crop the whole directory! |
| 1032 | // As Jhead produces this form of format incorrectness, |
| 1033 | // I'll just let it pass silently |
| 1034 | if (ShowTags) printf("Thumbnail removed with Jhead 1.3 or earlier\n"); |
| 1035 | }else{ |
| 1036 | ErrNonfatal("Illegal subdirectory link",0,0); |
| 1037 | } |
| 1038 | }else{ |
| 1039 | if (SubdirStart <= OffsetBase+ExifLength){ |
| 1040 | if (ShowTags) printf("%s Continued directory ",IndentString); |
| 1041 | ProcessExifDir(SubdirStart, OffsetBase, ExifLength, NestingLevel+1); |
| 1042 | } |
| 1043 | } |
| 1044 | if (Offset > ImageInfo.LargestExifOffset){ |
| 1045 | ImageInfo.LargestExifOffset = Offset; |
| 1046 | } |
| 1047 | } |
| 1048 | }else{ |
| 1049 | // The exif header ends before the last next directory pointer. |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | if (ThumbnailOffset){ |
| 1054 | ImageInfo.ThumbnailAtEnd = FALSE; |
| 1055 | |
| 1056 | if (DumpExifMap){ |
| 1057 | printf("Map: %05d-%05d: Thumbnail\n",ThumbnailOffset, ThumbnailOffset+ThumbnailSize); |
| 1058 | } |
| 1059 | |
| 1060 | if (ThumbnailOffset <= ExifLength){ |
| 1061 | if (ThumbnailSize > ExifLength-ThumbnailOffset){ |
| 1062 | // If thumbnail extends past exif header, only save the part that |
| 1063 | // actually exists. Canon's EOS viewer utility will do this - the |
| 1064 | // thumbnail extracts ok with this hack. |
| 1065 | ThumbnailSize = ExifLength-ThumbnailOffset; |
| 1066 | if (ShowTags) printf("Thumbnail incorrectly placed in header\n"); |
| 1067 | |
| 1068 | } |
| 1069 | // The thumbnail pointer appears to be valid. Store it. |
| 1070 | ImageInfo.ThumbnailOffset = ThumbnailOffset; |
| 1071 | ImageInfo.ThumbnailSize = ThumbnailSize; |
| 1072 | |
| 1073 | if (ShowTags){ |
| 1074 | printf("Thumbnail size: %d bytes\n",ThumbnailSize); |
| 1075 | } |
| 1076 | } |
| 1077 | } |
| 1078 | printf("returning from ProcessExifDir"); |
| 1079 | } |
| 1080 | |
| 1081 | |
| 1082 | //-------------------------------------------------------------------------- |
| 1083 | // Process a EXIF marker |
| 1084 | // Describes all the drivel that most digital cameras include... |
| 1085 | //-------------------------------------------------------------------------- |
| 1086 | void process_EXIF (unsigned char * ExifSection, unsigned int length) |
| 1087 | { |
| 1088 | int FirstOffset; |
| 1089 | |
| 1090 | FocalplaneXRes = 0; |
| 1091 | FocalplaneUnits = 0; |
| 1092 | ExifImageWidth = 0; |
| 1093 | NumOrientations = 0; |
| 1094 | |
| 1095 | if (ShowTags){ |
| 1096 | printf("Exif header %d bytes long\n",length); |
| 1097 | } |
| 1098 | |
| 1099 | { // Check the EXIF header component |
| 1100 | static uchar ExifHeader[] = "Exif\0\0"; |
| 1101 | if (memcmp(ExifSection+2, ExifHeader,6)){ |
| 1102 | ErrNonfatal("Incorrect Exif header",0,0); |
| 1103 | return; |
| 1104 | } |
| 1105 | } |
| 1106 | |
| 1107 | if (memcmp(ExifSection+8,"II",2) == 0){ |
| 1108 | if (ShowTags) printf("Exif section in Intel order\n"); |
| 1109 | MotorolaOrder = 0; |
| 1110 | }else{ |
| 1111 | if (memcmp(ExifSection+8,"MM",2) == 0){ |
| 1112 | if (ShowTags) printf("Exif section in Motorola order\n"); |
| 1113 | MotorolaOrder = 1; |
| 1114 | }else{ |
| 1115 | ErrNonfatal("Invalid Exif alignment marker.",0,0); |
| 1116 | return; |
| 1117 | } |
| 1118 | } |
| 1119 | |
| 1120 | // Check the next value for correctness. |
| 1121 | if (Get16u(ExifSection+10) != 0x2a){ |
| 1122 | ErrNonfatal("Invalid Exif start (1)",0,0); |
| 1123 | return; |
| 1124 | } |
| 1125 | |
| 1126 | FirstOffset = Get32u(ExifSection+12); |
| 1127 | if (FirstOffset < 8 || FirstOffset > 16){ |
| 1128 | // Usually set to 8, but other values valid too. |
| 1129 | ErrNonfatal("Suspicious offset of first IFD value",0,0); |
| 1130 | return; |
| 1131 | } |
| 1132 | |
| 1133 | DirWithThumbnailPtrs = NULL; |
| 1134 | |
| 1135 | |
| 1136 | // First directory starts 16 bytes in. All offset are relative to 8 bytes in. |
| 1137 | ProcessExifDir(ExifSection+8+FirstOffset, ExifSection+8, length-8, 0); |
| 1138 | |
| 1139 | ImageInfo.ThumbnailAtEnd = ImageInfo.ThumbnailOffset >= ImageInfo.LargestExifOffset ? TRUE : FALSE; |
| 1140 | #ifdef SUPERDEBUG |
| 1141 | printf("Thumbnail %s end", (ImageInfo.ThumbnailAtEnd ? "at" : "NOT at")); |
| 1142 | #endif |
| 1143 | if (DumpExifMap){ |
| 1144 | unsigned a,b; |
| 1145 | printf("Map: %05d- End of exif\n",length-8); |
| 1146 | // for (a=0;a<length-8;a+= 10){ |
| 1147 | // printf("Map: %05d ",a); |
| 1148 | // for (b=0;b<10;b++) printf(" %02x",*(ExifSection+8+a+b)); |
| 1149 | // printf("\n"); |
| 1150 | // } |
| 1151 | for (a = 0; a < length - 8; ++a) { |
| 1152 | unsigned char c = *(ExifSection+8+a); |
| 1153 | unsigned pc = isprint(c) ? c : ' '; |
| 1154 | printf("Map: %4d %02x %c", a, c, pc); |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | |
| 1159 | // Compute the CCD width, in millimeters. |
| 1160 | if (FocalplaneXRes != 0){ |
| 1161 | // Note: With some cameras, its not possible to compute this correctly because |
| 1162 | // they don't adjust the indicated focal plane resolution units when using less |
| 1163 | // than maximum resolution, so the CCDWidth value comes out too small. Nothing |
| 1164 | // that Jhad can do about it - its a camera problem. |
| 1165 | ImageInfo.CCDWidth = (float)(ExifImageWidth * FocalplaneUnits / FocalplaneXRes); |
| 1166 | |
Wu-cheng Li | 574d52d | 2010-01-31 22:34:33 +0800 | [diff] [blame] | 1167 | if (ImageInfo.FocalLength.num != 0 && ImageInfo.FocalLength.denom != 0 |
| 1168 | && ImageInfo.FocalLength35mmEquiv == 0){ |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1169 | // Compute 35 mm equivalent focal length based on sensor geometry if we haven't |
| 1170 | // already got it explicitly from a tag. |
Wu-cheng Li | 574d52d | 2010-01-31 22:34:33 +0800 | [diff] [blame] | 1171 | ImageInfo.FocalLength35mmEquiv = (int)( |
| 1172 | (double)ImageInfo.FocalLength.num / ImageInfo.FocalLength.denom |
| 1173 | / ImageInfo.CCDWidth * 36 + 0.5); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1174 | } |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | static const TagTable_t* TagToTagTableEntry(unsigned short tag) |
| 1179 | { |
| 1180 | unsigned int i; |
| 1181 | for (i = 0; i < TAG_TABLE_SIZE; i++) { |
| 1182 | if (TagTable[i].Tag == tag) { |
| 1183 | printf("found tag %d", tag); |
| 1184 | int format = TagTable[i].Format; |
| 1185 | if (format == 0) { |
| 1186 | printf("tag %s format not defined ***** YOU MUST ADD THE FORMAT TO THE TagTable in exif.c!!!!", TagTable[i].Desc); |
| 1187 | return NULL; |
| 1188 | } |
| 1189 | return &TagTable[i]; |
| 1190 | } |
| 1191 | } |
| 1192 | printf("tag %d NOT FOUND", tag); |
| 1193 | return NULL; |
| 1194 | } |
| 1195 | |
| 1196 | static void writeExifTagAndData(int tag, |
| 1197 | int format, |
| 1198 | long components, |
| 1199 | long value, |
| 1200 | int valueInString, |
| 1201 | char* Buffer, |
| 1202 | int* DirIndex, |
| 1203 | int* DataWriteIndex) { |
Tyler Luu | 7540780 | 2011-10-19 01:36:15 -0500 | [diff] [blame] | 1204 | void* componentsPosition = NULL; // for saving component position |
| 1205 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1206 | Put16u(Buffer+ (*DirIndex), tag); // Tag |
| 1207 | Put16u(Buffer+(*DirIndex) + 2, format); // Format |
| 1208 | if (format == FMT_STRING && components == -1) { |
| 1209 | components = strlen((char*)value) + 1; // account for null terminator |
| 1210 | if (components & 1) ++components; // no odd lengths |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1211 | } else if (format == FMT_SSHORT && components == -1) { |
| 1212 | // jhead only supports reading one SSHORT anyway |
| 1213 | components = 1; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1214 | } |
Tyler Luu | bd90094 | 2011-10-12 17:46:32 -0500 | [diff] [blame] | 1215 | if (format == FMT_UNDEFINED && components == -1) { |
| 1216 | // check if this UNDEFINED format is actually ASCII (as it usually is) |
| 1217 | // if so, we can calculate the size |
| 1218 | if(memcmp((char*)value, ExifAsciiPrefix, sizeof(ExifAsciiPrefix)) == 0) { |
| 1219 | components = sizeof(ExifAsciiPrefix) + |
| 1220 | strlen((char*)value + sizeof(ExifAsciiPrefix)) + 1; |
| 1221 | if (components & 1) ++components; // no odd lengths |
| 1222 | } |
| 1223 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1224 | Put32u(Buffer+(*DirIndex) + 4, components); // Components |
Tyler Luu | 7540780 | 2011-10-19 01:36:15 -0500 | [diff] [blame] | 1225 | componentsPosition = Buffer+(*DirIndex) + 4; // components # can change for lists |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1226 | printf("# components: %ld", components); |
| 1227 | if (format == FMT_STRING) { |
| 1228 | // short strings can fit right in the long, otherwise have to |
| 1229 | // go in the data area |
| 1230 | if (components <= 4) { |
| 1231 | strcpy(Buffer+(*DirIndex) + 8, (char*)value); |
| 1232 | } else { |
| 1233 | Put32u(Buffer+(*DirIndex) + 8, (*DataWriteIndex)-8); // Pointer |
| 1234 | printf("copying value %s to %d", (char*)value, (*DataWriteIndex)); |
| 1235 | strncpy(Buffer+(*DataWriteIndex), (char*)value, components); |
| 1236 | (*DataWriteIndex) += components; |
| 1237 | } |
Tyler Luu | bd90094 | 2011-10-12 17:46:32 -0500 | [diff] [blame] | 1238 | } else if ((format == FMT_UNDEFINED) && |
| 1239 | (memcmp((char*)value, ExifAsciiPrefix, sizeof(ExifAsciiPrefix)) == 0)) { |
| 1240 | // short strings can fit right in the long, otherwise have to |
| 1241 | // go in the data area |
| 1242 | if (components <= 4) { |
| 1243 | memcpy(Buffer+(*DirIndex) + 8, (char*)value, components); |
| 1244 | } else { |
| 1245 | Put32u(Buffer+(*DirIndex) + 8, (*DataWriteIndex)-8); // Pointer |
| 1246 | printf("copying %s to %d", (char*)value + sizeof(ExifAsciiPrefix), (*DataWriteIndex)); |
| 1247 | memcpy(Buffer+(*DataWriteIndex), (char*)value, components); |
| 1248 | (*DataWriteIndex) += components; |
| 1249 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1250 | } else if (!valueInString) { |
| 1251 | Put32u(Buffer+(*DirIndex) + 8, value); // Value |
| 1252 | } else { |
| 1253 | Put32u(Buffer+(*DirIndex) + 8, (*DataWriteIndex)-8); // Pointer |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1254 | // Usually the separator is ',', but sometimes ':' is used, like |
| 1255 | // TAG_GPS_TIMESTAMP. |
| 1256 | char* curElement = strtok((char*)value, ",:"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1257 | int i; |
Tyler Luu | 658ad71 | 2011-11-17 19:34:29 -0600 | [diff] [blame] | 1258 | |
| 1259 | // (components == -1) Need to handle lists with unknown length too |
| 1260 | for (i = 0; ((i < components) || (components == -1)) && curElement != NULL; i++) { |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1261 | #ifdef SUPERDEBUG |
| 1262 | printf("processing component %s format %s", curElement, formatStr(format)); |
| 1263 | #endif |
| 1264 | // elements are separated by commas |
| 1265 | if (format == FMT_URATIONAL) { |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1266 | unsigned int numerator; |
| 1267 | unsigned int denominator; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1268 | char* separator = strchr(curElement, '/'); |
| 1269 | if (separator) { |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1270 | numerator = atoi(curElement); |
| 1271 | denominator = atoi(separator + 1); |
| 1272 | } else { |
| 1273 | double value = atof(curElement); |
| 1274 | ConvertDoubleToURational(value, &numerator, &denominator); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1275 | } |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1276 | Put32u(Buffer+(*DataWriteIndex), numerator); |
| 1277 | Put32u(Buffer+(*DataWriteIndex) + 4, denominator); |
| 1278 | (*DataWriteIndex) += 8; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1279 | } else if (format == FMT_SRATIONAL) { |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1280 | int numerator; |
| 1281 | int denominator; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1282 | char* separator = strchr(curElement, '/'); |
| 1283 | if (separator) { |
Chih-Chung Chang | dc4fa4c | 2012-10-15 13:35:18 +0800 | [diff] [blame] | 1284 | numerator = atoi(curElement); |
| 1285 | denominator = atoi(separator + 1); |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1286 | } else { |
| 1287 | double value = atof(curElement); |
| 1288 | ConvertDoubleToSRational(value, &numerator, &denominator); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1289 | } |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1290 | Put32u(Buffer+(*DataWriteIndex), numerator); |
| 1291 | Put32u(Buffer+(*DataWriteIndex) + 4, denominator); |
| 1292 | (*DataWriteIndex) += 8; |
Tyler Luu | 658ad71 | 2011-11-17 19:34:29 -0600 | [diff] [blame] | 1293 | } else if ((components == -1) && ((format == FMT_USHORT) || (format == FMT_SSHORT))) { |
| 1294 | // variable components need to go into data write area |
| 1295 | value = atoi(curElement); |
| 1296 | Put16u(Buffer+(*DataWriteIndex), value); |
| 1297 | (*DataWriteIndex) += 4; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1298 | } else { |
| 1299 | // TODO: doesn't handle multiple components yet -- if more than one, have to put in data write area. |
| 1300 | value = atoi(curElement); |
| 1301 | Put32u(Buffer+(*DirIndex) + 8, value); // Value |
| 1302 | } |
Chih-Chung Chang | 42c1e4b | 2012-07-10 15:47:20 +0800 | [diff] [blame] | 1303 | curElement = strtok(NULL, ",:"); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1304 | } |
Tyler Luu | 7540780 | 2011-10-19 01:36:15 -0500 | [diff] [blame] | 1305 | if (components == -1) Put32u(componentsPosition, i); // update component # for unknowns |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1306 | } |
| 1307 | (*DirIndex) += 12; |
| 1308 | } |
| 1309 | |
| 1310 | #ifdef SUPERDEBUG |
| 1311 | char* formatStr(int format) { |
| 1312 | switch (format) { |
| 1313 | case FMT_BYTE: return "FMT_BYTE"; break; |
| 1314 | case FMT_STRING: return "FMT_STRING"; break; |
| 1315 | case FMT_USHORT: return "FMT_USHORT"; break; |
| 1316 | case FMT_ULONG: return "FMT_ULONG"; break; |
| 1317 | case FMT_URATIONAL: return "FMT_URATIONAL"; break; |
| 1318 | case FMT_SBYTE: return "FMT_SBYTE"; break; |
| 1319 | case FMT_UNDEFINED: return "FMT_UNDEFINED"; break; |
| 1320 | case FMT_SSHORT: return "FMT_SSHORT"; break; |
| 1321 | case FMT_SLONG: return "FMT_SLONG"; break; |
| 1322 | case FMT_SRATIONAL: return "FMT_SRATIONAL"; break; |
| 1323 | case FMT_SINGLE: return "FMT_SINGLE"; break; |
| 1324 | case FMT_DOUBLE: return "FMT_SINGLE"; break; |
| 1325 | default: return "UNKNOWN"; |
| 1326 | } |
| 1327 | } |
| 1328 | #endif |
| 1329 | |
| 1330 | //-------------------------------------------------------------------------- |
| 1331 | // Create minimal exif header - just date and thumbnail pointers, |
| 1332 | // so that date and thumbnail may be filled later. |
| 1333 | //-------------------------------------------------------------------------- |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1334 | static void create_EXIF_internal(ExifElement_t* elements, int exifTagCount, int gpsTagCount, int hasDateTimeTag, char* Buffer) |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1335 | { |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1336 | unsigned short NumEntries; |
| 1337 | int DataWriteIndex; |
| 1338 | int DirIndex; |
Tyler Luu | 0aba81d | 2011-09-27 15:47:22 -0500 | [diff] [blame] | 1339 | int DirExifLink = 0; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1340 | |
| 1341 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 1342 | ALOGE("create_EXIF %d exif elements, %d gps elements", exifTagCount, gpsTagCount); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1343 | #endif |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1344 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1345 | MotorolaOrder = 0; |
| 1346 | |
| 1347 | memcpy(Buffer+2, "Exif\0\0II",8); |
| 1348 | Put16u(Buffer+10, 0x2a); |
| 1349 | |
| 1350 | DataWriteIndex = 16; |
| 1351 | Put32u(Buffer+12, DataWriteIndex-8); // first IFD offset. Means start 16 bytes in. |
| 1352 | |
| 1353 | { |
| 1354 | DirIndex = DataWriteIndex; |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1355 | NumEntries = 1 + exifTagCount; // the extra is the thumbnail |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1356 | if (gpsTagCount) { |
| 1357 | ++NumEntries; // allow for the GPS info tag |
| 1358 | } |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1359 | if (!hasDateTimeTag) { |
| 1360 | // We have to write extra date time tag. The entry number should be |
| 1361 | // adjusted. |
| 1362 | ++NumEntries; |
| 1363 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1364 | DataWriteIndex += 2 + NumEntries*12 + 4; |
| 1365 | |
| 1366 | Put16u(Buffer+DirIndex, NumEntries); // Number of entries |
| 1367 | DirIndex += 2; |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1368 | |
| 1369 | // Entries go here... |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1370 | if (!hasDateTimeTag) { |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1371 | // Date/time entry |
| 1372 | char* dateTime = NULL; |
| 1373 | char dateBuf[20]; |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1374 | if (ImageInfo.numDateTimeTags) { |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1375 | // If we had a pre-existing exif header, use time from that. |
| 1376 | dateTime = ImageInfo.DateTime; |
| 1377 | } else { |
| 1378 | // Oterwise, use the file's timestamp. |
| 1379 | FileTimeAsString(dateBuf); |
| 1380 | dateTime = dateBuf; |
| 1381 | } |
| 1382 | writeExifTagAndData(TAG_DATETIME, |
| 1383 | FMT_STRING, |
| 1384 | 20, |
| 1385 | (long)(char*)dateBuf, |
| 1386 | FALSE, |
| 1387 | Buffer, |
| 1388 | &DirIndex, |
| 1389 | &DataWriteIndex); |
| 1390 | |
| 1391 | } |
| 1392 | if (exifTagCount > 0) { |
| 1393 | int i; |
| 1394 | for (i = 0; i < exifTagCount + gpsTagCount; i++) { |
| 1395 | if (elements[i].GpsTag) { |
| 1396 | continue; |
| 1397 | } |
| 1398 | const TagTable_t* entry = TagToTagTableEntry(elements[i].Tag); |
| 1399 | if (entry == NULL) { |
| 1400 | continue; |
| 1401 | } |
| 1402 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 1403 | ALOGE("create_EXIF saving tag %x value \"%s\"",elements[i].Tag, elements[i].Value); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1404 | #endif |
| 1405 | writeExifTagAndData(elements[i].Tag, |
| 1406 | entry->Format, |
| 1407 | entry->DataLength, |
| 1408 | (long)elements[i].Value, |
| 1409 | TRUE, |
| 1410 | Buffer, |
| 1411 | &DirIndex, |
| 1412 | &DataWriteIndex); |
| 1413 | } |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1414 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1415 | if (gpsTagCount) { |
| 1416 | // Link to gps dir entry |
| 1417 | writeExifTagAndData(TAG_GPSINFO, |
| 1418 | FMT_ULONG, |
| 1419 | 1, |
| 1420 | DataWriteIndex-8, |
| 1421 | FALSE, |
| 1422 | Buffer, |
| 1423 | &DirIndex, |
| 1424 | &DataWriteIndex); |
| 1425 | } |
| 1426 | |
| 1427 | // Link to exif dir entry |
| 1428 | int exifDirPtr = DataWriteIndex-8; |
| 1429 | if (gpsTagCount) { |
| 1430 | exifDirPtr += 2 + gpsTagCount*12 + 4; |
| 1431 | } |
Tyler Luu | 0aba81d | 2011-09-27 15:47:22 -0500 | [diff] [blame] | 1432 | DirExifLink = DirIndex; |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1433 | writeExifTagAndData(TAG_EXIF_OFFSET, |
| 1434 | FMT_ULONG, |
| 1435 | 1, |
| 1436 | exifDirPtr, |
| 1437 | FALSE, |
| 1438 | Buffer, |
| 1439 | &DirIndex, |
| 1440 | &DataWriteIndex); |
| 1441 | } |
| 1442 | |
| 1443 | // End of directory - contains optional link to continued directory. |
Tyler Luu | 0aba81d | 2011-09-27 15:47:22 -0500 | [diff] [blame] | 1444 | Put32u(Buffer+DirIndex, 0); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1445 | printf("Ending Exif section DirIndex = %d DataWriteIndex %d", DirIndex, DataWriteIndex); |
| 1446 | } |
| 1447 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1448 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1449 | // GPS Section |
| 1450 | if (gpsTagCount) { |
| 1451 | DirIndex = DataWriteIndex; |
| 1452 | printf("Starting GPS section DirIndex = %d", DirIndex); |
| 1453 | NumEntries = gpsTagCount; |
| 1454 | DataWriteIndex += 2 + NumEntries*12 + 4; |
| 1455 | |
| 1456 | Put16u(Buffer+DirIndex, NumEntries); // Number of entries |
| 1457 | DirIndex += 2; |
| 1458 | { |
| 1459 | int i; |
| 1460 | for (i = 0; i < exifTagCount + gpsTagCount; i++) { |
| 1461 | if (!elements[i].GpsTag) { |
| 1462 | continue; |
| 1463 | } |
| 1464 | const TagTable_t* entry = GpsTagToTagTableEntry(elements[i].Tag); |
| 1465 | if (entry == NULL) { |
| 1466 | continue; |
| 1467 | } |
| 1468 | #ifdef SUPERDEBUG |
Steve Block | 7a314da | 2012-01-06 19:10:19 +0000 | [diff] [blame] | 1469 | ALOGE("create_EXIF saving GPS tag %x value \"%s\"",elements[i].Tag, elements[i].Value); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1470 | #endif |
| 1471 | writeExifTagAndData(elements[i].Tag, |
| 1472 | entry->Format, |
| 1473 | entry->DataLength, |
| 1474 | (long)elements[i].Value, |
| 1475 | TRUE, |
| 1476 | Buffer, |
| 1477 | &DirIndex, |
| 1478 | &DataWriteIndex); |
| 1479 | } |
| 1480 | } |
| 1481 | |
| 1482 | // End of directory - contains optional link to continued directory. |
| 1483 | Put32u(Buffer+DirIndex, 0); |
| 1484 | printf("Ending GPS section DirIndex = %d DataWriteIndex %d", DirIndex, DataWriteIndex); |
| 1485 | } |
| 1486 | |
| 1487 | { |
Tyler Luu | 0aba81d | 2011-09-27 15:47:22 -0500 | [diff] [blame] | 1488 | // Overwriting TAG_EXIF_OFFSET which links to this directory |
| 1489 | Put32u(Buffer+DirExifLink+8, DataWriteIndex-8); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1490 | |
| 1491 | printf("Starting Thumbnail section DirIndex = %d", DirIndex); |
| 1492 | DirIndex = DataWriteIndex; |
| 1493 | NumEntries = 2; |
| 1494 | DataWriteIndex += 2 + NumEntries*12 + 4; |
| 1495 | |
| 1496 | Put16u(Buffer+DirIndex, NumEntries); // Number of entries |
| 1497 | DirIndex += 2; |
| 1498 | { |
| 1499 | // Link to exif dir entry |
| 1500 | writeExifTagAndData(TAG_THUMBNAIL_OFFSET, |
| 1501 | FMT_ULONG, |
| 1502 | 1, |
| 1503 | DataWriteIndex-8, |
| 1504 | FALSE, |
| 1505 | Buffer, |
| 1506 | &DirIndex, |
| 1507 | &DataWriteIndex); |
| 1508 | } |
| 1509 | |
| 1510 | { |
| 1511 | // Link to exif dir entry |
| 1512 | writeExifTagAndData(TAG_THUMBNAIL_LENGTH, |
| 1513 | FMT_ULONG, |
| 1514 | 1, |
| 1515 | 0, |
| 1516 | FALSE, |
| 1517 | Buffer, |
| 1518 | &DirIndex, |
| 1519 | &DataWriteIndex); |
| 1520 | } |
| 1521 | |
| 1522 | // End of directory - contains optional link to continued directory. |
| 1523 | Put32u(Buffer+DirIndex, 0); |
| 1524 | printf("Ending Thumbnail section DirIndex = %d DataWriteIndex %d", DirIndex, DataWriteIndex); |
| 1525 | } |
| 1526 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1527 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1528 | Buffer[0] = (unsigned char)(DataWriteIndex >> 8); |
| 1529 | Buffer[1] = (unsigned char)DataWriteIndex; |
| 1530 | |
| 1531 | // Remove old exif section, if there was one. |
| 1532 | RemoveSectionType(M_EXIF); |
| 1533 | |
| 1534 | { |
| 1535 | // Sections need malloced buffers, so do that now, especially because |
| 1536 | // we now know how big it needs to be allocated. |
| 1537 | unsigned char * NewBuf = malloc(DataWriteIndex); |
| 1538 | if (NewBuf == NULL){ |
| 1539 | ErrFatal("Could not allocate memory"); |
| 1540 | } |
| 1541 | memcpy(NewBuf, Buffer, DataWriteIndex); |
| 1542 | |
| 1543 | CreateSection(M_EXIF, NewBuf, DataWriteIndex); |
| 1544 | |
| 1545 | // Re-parse new exif section, now that its in place |
| 1546 | // otherwise, we risk touching data that has already been freed. |
| 1547 | process_EXIF(NewBuf, DataWriteIndex); |
| 1548 | } |
| 1549 | } |
| 1550 | |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1551 | void create_EXIF(ExifElement_t* elements, int exifTagCount, int gpsTagCount, int hasDateTimeTag) |
Takahiro Okada | 2645b48 | 2011-01-27 20:06:00 +0900 | [diff] [blame] | 1552 | { |
| 1553 | // It is hard to calculate exact necessary size for editing the exif |
| 1554 | // header dynamically, so we are using the maximum size of EXIF, 64K |
| 1555 | const int EXIF_MAX_SIZE = 1024*64; |
| 1556 | char* Buffer = malloc(EXIF_MAX_SIZE); |
| 1557 | |
| 1558 | if (Buffer != NULL) { |
Angus Kong | 482486a | 2012-01-19 15:56:10 +0800 | [diff] [blame] | 1559 | create_EXIF_internal(elements, exifTagCount, gpsTagCount, hasDateTimeTag, Buffer); |
Takahiro Okada | 2645b48 | 2011-01-27 20:06:00 +0900 | [diff] [blame] | 1560 | free(Buffer); |
| 1561 | } else { |
| 1562 | ErrFatal("Could not allocate memory"); |
| 1563 | } |
| 1564 | } |
| 1565 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1566 | //-------------------------------------------------------------------------- |
| 1567 | // Cler the rotation tag in the exif header to 1. |
| 1568 | //-------------------------------------------------------------------------- |
| 1569 | const char * ClearOrientation(void) |
| 1570 | { |
| 1571 | int a; |
| 1572 | if (NumOrientations == 0) return NULL; |
| 1573 | |
| 1574 | for (a=0;a<NumOrientations;a++){ |
| 1575 | switch(OrientationNumFormat[a]){ |
| 1576 | case FMT_SBYTE: |
| 1577 | case FMT_BYTE: |
| 1578 | *(uchar *)(OrientationPtr[a]) = 1; |
| 1579 | break; |
| 1580 | |
| 1581 | case FMT_USHORT: |
| 1582 | Put16u(OrientationPtr[a], 1); |
| 1583 | break; |
| 1584 | |
| 1585 | case FMT_ULONG: |
| 1586 | case FMT_SLONG: |
| 1587 | memset(OrientationPtr, 0, 4); |
| 1588 | // Can't be bothered to write generic Put32 if I only use it once. |
| 1589 | if (MotorolaOrder){ |
| 1590 | ((uchar *)OrientationPtr[a])[3] = 1; |
| 1591 | }else{ |
| 1592 | ((uchar *)OrientationPtr[a])[0] = 1; |
| 1593 | } |
| 1594 | break; |
| 1595 | |
| 1596 | default: |
| 1597 | return NULL; |
| 1598 | } |
| 1599 | } |
| 1600 | |
| 1601 | return OrientTab[ImageInfo.Orientation]; |
| 1602 | } |
| 1603 | |
| 1604 | |
| 1605 | |
| 1606 | //-------------------------------------------------------------------------- |
| 1607 | // Remove thumbnail out of the exif image. |
| 1608 | //-------------------------------------------------------------------------- |
| 1609 | int RemoveThumbnail(unsigned char * ExifSection) |
| 1610 | { |
| 1611 | if (!DirWithThumbnailPtrs || |
| 1612 | ImageInfo.ThumbnailOffset == 0 || |
| 1613 | ImageInfo.ThumbnailSize == 0){ |
| 1614 | // No thumbnail, or already deleted it. |
| 1615 | return 0; |
| 1616 | } |
| 1617 | if (ImageInfo.ThumbnailAtEnd == FALSE){ |
| 1618 | ErrNonfatal("Thumbnail is not at end of header, can't chop it off", 0, 0); |
| 1619 | return 0; |
| 1620 | } |
| 1621 | |
| 1622 | { |
| 1623 | int de; |
| 1624 | int NumDirEntries; |
| 1625 | NumDirEntries = Get16u(DirWithThumbnailPtrs); |
| 1626 | |
| 1627 | for (de=0;de<NumDirEntries;de++){ |
| 1628 | int Tag; |
| 1629 | unsigned char * DirEntry; |
| 1630 | DirEntry = DIR_ENTRY_ADDR(DirWithThumbnailPtrs, de); |
| 1631 | Tag = Get16u(DirEntry); |
| 1632 | if (Tag == TAG_THUMBNAIL_LENGTH){ |
| 1633 | // Set length to zero. |
| 1634 | if (Get16u(DirEntry+2) != FMT_ULONG){ |
| 1635 | // non standard format encoding. Can't do it. |
| 1636 | ErrNonfatal("Can't remove thumbnail", 0, 0); |
| 1637 | return 0; |
| 1638 | } |
| 1639 | Put32u(DirEntry+8, 0); |
| 1640 | } |
| 1641 | } |
| 1642 | } |
| 1643 | |
| 1644 | // This is how far the non thumbnail data went. |
| 1645 | return ImageInfo.ThumbnailOffset+8; |
| 1646 | |
| 1647 | } |
| 1648 | |
| 1649 | |
| 1650 | //-------------------------------------------------------------------------- |
| 1651 | // Convert exif time to Unix time structure |
| 1652 | //-------------------------------------------------------------------------- |
| 1653 | int Exif2tm(struct tm * timeptr, char * ExifTime) |
| 1654 | { |
| 1655 | int a; |
| 1656 | |
| 1657 | timeptr->tm_wday = -1; |
| 1658 | |
| 1659 | // Check for format: YYYY:MM:DD HH:MM:SS format. |
| 1660 | // Date and time normally separated by a space, but also seen a ':' there, so |
| 1661 | // skip the middle space with '%*c' so it can be any character. |
| 1662 | a = sscanf(ExifTime, "%d%*c%d%*c%d%*c%d:%d:%d", |
| 1663 | &timeptr->tm_year, &timeptr->tm_mon, &timeptr->tm_mday, |
| 1664 | &timeptr->tm_hour, &timeptr->tm_min, &timeptr->tm_sec); |
| 1665 | |
| 1666 | |
| 1667 | if (a == 6){ |
| 1668 | timeptr->tm_isdst = -1; |
| 1669 | timeptr->tm_mon -= 1; // Adjust for unix zero-based months |
| 1670 | timeptr->tm_year -= 1900; // Adjust for year starting at 1900 |
| 1671 | return TRUE; // worked. |
| 1672 | } |
| 1673 | |
| 1674 | return FALSE; // Wasn't in Exif date format. |
| 1675 | } |
| 1676 | |
| 1677 | |
| 1678 | //-------------------------------------------------------------------------- |
| 1679 | // Show the collected image info, displaying camera F-stop and shutter speed |
| 1680 | // in a consistent and legible fashion. |
| 1681 | //-------------------------------------------------------------------------- |
| 1682 | void ShowImageInfo(int ShowFileInfo) |
| 1683 | { |
| 1684 | if (ShowFileInfo){ |
| 1685 | printf("File name : %s\n",ImageInfo.FileName); |
| 1686 | printf("File size : %d bytes\n",ImageInfo.FileSize); |
| 1687 | |
| 1688 | { |
| 1689 | char Temp[20]; |
| 1690 | FileTimeAsString(Temp); |
| 1691 | printf("File date : %s\n",Temp); |
| 1692 | } |
| 1693 | } |
| 1694 | |
| 1695 | if (ImageInfo.CameraMake[0]){ |
| 1696 | printf("Camera make : %s\n",ImageInfo.CameraMake); |
| 1697 | printf("Camera model : %s\n",ImageInfo.CameraModel); |
| 1698 | } |
| 1699 | if (ImageInfo.DateTime[0]){ |
| 1700 | printf("Date/Time : %s\n",ImageInfo.DateTime); |
| 1701 | } |
| 1702 | printf("Resolution : %d x %d\n",ImageInfo.Width, ImageInfo.Height); |
| 1703 | |
| 1704 | if (ImageInfo.Orientation > 1){ |
| 1705 | // Only print orientation if one was supplied, and if its not 1 (normal orientation) |
| 1706 | printf("Orientation : %s\n", OrientTab[ImageInfo.Orientation]); |
| 1707 | } |
| 1708 | |
| 1709 | if (ImageInfo.IsColor == 0){ |
| 1710 | printf("Color/bw : Black and white\n"); |
| 1711 | } |
| 1712 | |
| 1713 | if (ImageInfo.FlashUsed >= 0){ |
| 1714 | if (ImageInfo.FlashUsed & 1){ |
| 1715 | printf("Flash used : Yes"); |
| 1716 | switch (ImageInfo.FlashUsed){ |
| 1717 | case 0x5: printf(" (Strobe light not detected)"); break; |
| 1718 | case 0x7: printf(" (Strobe light detected) "); break; |
| 1719 | case 0x9: printf(" (manual)"); break; |
| 1720 | case 0xd: printf(" (manual, return light not detected)"); break; |
| 1721 | case 0xf: printf(" (manual, return light detected)"); break; |
| 1722 | case 0x19:printf(" (auto)"); break; |
| 1723 | case 0x1d:printf(" (auto, return light not detected)"); break; |
| 1724 | case 0x1f:printf(" (auto, return light detected)"); break; |
| 1725 | case 0x41:printf(" (red eye reduction mode)"); break; |
| 1726 | case 0x45:printf(" (red eye reduction mode return light not detected)"); break; |
| 1727 | case 0x47:printf(" (red eye reduction mode return light detected)"); break; |
| 1728 | case 0x49:printf(" (manual, red eye reduction mode)"); break; |
| 1729 | case 0x4d:printf(" (manual, red eye reduction mode, return light not detected)"); break; |
| 1730 | case 0x4f:printf(" (red eye reduction mode, return light detected)"); break; |
| 1731 | case 0x59:printf(" (auto, red eye reduction mode)"); break; |
| 1732 | case 0x5d:printf(" (auto, red eye reduction mode, return light not detected)"); break; |
| 1733 | case 0x5f:printf(" (auto, red eye reduction mode, return light detected)"); break; |
| 1734 | } |
| 1735 | }else{ |
| 1736 | printf("Flash used : No"); |
| 1737 | switch (ImageInfo.FlashUsed){ |
| 1738 | case 0x18:printf(" (auto)"); break; |
| 1739 | } |
| 1740 | } |
| 1741 | printf("\n"); |
| 1742 | } |
| 1743 | |
| 1744 | |
Wu-cheng Li | 574d52d | 2010-01-31 22:34:33 +0800 | [diff] [blame] | 1745 | if (ImageInfo.FocalLength.num != 0 && ImageInfo.FocalLength.denom != 0) { |
| 1746 | printf("Focal length : %4.1fmm",(double)ImageInfo.FocalLength.num / ImageInfo.FocalLength.denom); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1747 | if (ImageInfo.FocalLength35mmEquiv){ |
| 1748 | printf(" (35mm equivalent: %dmm)", ImageInfo.FocalLength35mmEquiv); |
| 1749 | } |
| 1750 | printf("\n"); |
| 1751 | } |
| 1752 | |
| 1753 | if (ImageInfo.DigitalZoomRatio > 1){ |
| 1754 | // Digital zoom used. Shame on you! |
| 1755 | printf("Digital Zoom : %1.3fx\n", (double)ImageInfo.DigitalZoomRatio); |
| 1756 | } |
| 1757 | |
| 1758 | if (ImageInfo.CCDWidth){ |
| 1759 | printf("CCD width : %4.2fmm\n",(double)ImageInfo.CCDWidth); |
| 1760 | } |
| 1761 | |
| 1762 | if (ImageInfo.ExposureTime){ |
| 1763 | if (ImageInfo.ExposureTime < 0.010){ |
| 1764 | printf("Exposure time: %6.4f s ",(double)ImageInfo.ExposureTime); |
| 1765 | }else{ |
| 1766 | printf("Exposure time: %5.3f s ",(double)ImageInfo.ExposureTime); |
| 1767 | } |
| 1768 | if (ImageInfo.ExposureTime <= 0.5){ |
| 1769 | printf(" (1/%d)",(int)(0.5 + 1/ImageInfo.ExposureTime)); |
| 1770 | } |
| 1771 | printf("\n"); |
| 1772 | } |
| 1773 | if (ImageInfo.ApertureFNumber){ |
| 1774 | printf("Aperture : f/%3.1f\n",(double)ImageInfo.ApertureFNumber); |
| 1775 | } |
| 1776 | if (ImageInfo.Distance){ |
| 1777 | if (ImageInfo.Distance < 0){ |
| 1778 | printf("Focus dist. : Infinite\n"); |
| 1779 | }else{ |
| 1780 | printf("Focus dist. : %4.2fm\n",(double)ImageInfo.Distance); |
| 1781 | } |
| 1782 | } |
| 1783 | |
| 1784 | if (ImageInfo.ISOequivalent){ |
| 1785 | printf("ISO equiv. : %2d\n",(int)ImageInfo.ISOequivalent); |
| 1786 | } |
| 1787 | |
| 1788 | if (ImageInfo.ExposureBias){ |
| 1789 | // If exposure bias was specified, but set to zero, presumably its no bias at all, |
| 1790 | // so only show it if its nonzero. |
| 1791 | printf("Exposure bias: %4.2f\n",(double)ImageInfo.ExposureBias); |
| 1792 | } |
| 1793 | |
| 1794 | switch(ImageInfo.Whitebalance) { |
| 1795 | case 1: |
| 1796 | printf("Whitebalance : Manual\n"); |
| 1797 | break; |
| 1798 | case 0: |
| 1799 | printf("Whitebalance : Auto\n"); |
| 1800 | break; |
| 1801 | } |
| 1802 | |
| 1803 | //Quercus: 17-1-2004 Added LightSource, some cams return this, whitebalance or both |
| 1804 | switch(ImageInfo.LightSource) { |
| 1805 | case 1: |
| 1806 | printf("Light Source : Daylight\n"); |
| 1807 | break; |
| 1808 | case 2: |
| 1809 | printf("Light Source : Fluorescent\n"); |
| 1810 | break; |
| 1811 | case 3: |
| 1812 | printf("Light Source : Incandescent\n"); |
| 1813 | break; |
| 1814 | case 4: |
| 1815 | printf("Light Source : Flash\n"); |
| 1816 | break; |
| 1817 | case 9: |
| 1818 | printf("Light Source : Fine weather\n"); |
| 1819 | break; |
| 1820 | case 11: |
| 1821 | printf("Light Source : Shade\n"); |
| 1822 | break; |
| 1823 | default:; //Quercus: 17-1-2004 There are many more modes for this, check Exif2.2 specs |
| 1824 | // If it just says 'unknown' or we don't know it, then |
| 1825 | // don't bother showing it - it doesn't add any useful information. |
| 1826 | } |
| 1827 | |
| 1828 | if (ImageInfo.MeteringMode){ // 05-jan-2001 vcs |
| 1829 | switch(ImageInfo.MeteringMode) { |
| 1830 | case 2: |
| 1831 | printf("Metering Mode: center weight\n"); |
| 1832 | break; |
| 1833 | case 3: |
| 1834 | printf("Metering Mode: spot\n"); |
| 1835 | break; |
| 1836 | case 5: |
| 1837 | printf("Metering Mode: matrix\n"); |
| 1838 | break; |
| 1839 | } |
| 1840 | } |
| 1841 | |
| 1842 | if (ImageInfo.ExposureProgram){ // 05-jan-2001 vcs |
| 1843 | switch(ImageInfo.ExposureProgram) { |
| 1844 | case 1: |
| 1845 | printf("Exposure : Manual\n"); |
| 1846 | break; |
| 1847 | case 2: |
| 1848 | printf("Exposure : program (auto)\n"); |
| 1849 | break; |
| 1850 | case 3: |
| 1851 | printf("Exposure : aperture priority (semi-auto)\n"); |
| 1852 | break; |
| 1853 | case 4: |
| 1854 | printf("Exposure : shutter priority (semi-auto)\n"); |
| 1855 | break; |
| 1856 | case 5: |
| 1857 | printf("Exposure : Creative Program (based towards depth of field)\n"); |
| 1858 | break; |
| 1859 | case 6: |
| 1860 | printf("Exposure : Action program (based towards fast shutter speed)\n"); |
| 1861 | break; |
| 1862 | case 7: |
| 1863 | printf("Exposure : Portrait Mode\n"); |
| 1864 | break; |
| 1865 | case 8: |
| 1866 | printf("Exposure : LandscapeMode \n"); |
| 1867 | break; |
| 1868 | default: |
| 1869 | break; |
| 1870 | } |
| 1871 | } |
| 1872 | switch(ImageInfo.ExposureMode){ |
| 1873 | case 0: // Automatic (not worth cluttering up output for) |
| 1874 | break; |
| 1875 | case 1: printf("Exposure Mode: Manual\n"); |
| 1876 | break; |
| 1877 | case 2: printf("Exposure Mode: Auto bracketing\n"); |
| 1878 | break; |
| 1879 | } |
| 1880 | |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1881 | if (ImageInfo.DistanceRange) { |
| 1882 | printf("Focus range : "); |
| 1883 | switch(ImageInfo.DistanceRange) { |
| 1884 | case 1: |
| 1885 | printf("macro"); |
| 1886 | break; |
| 1887 | case 2: |
| 1888 | printf("close"); |
| 1889 | break; |
| 1890 | case 3: |
| 1891 | printf("distant"); |
| 1892 | break; |
| 1893 | } |
| 1894 | printf("\n"); |
| 1895 | } |
| 1896 | |
| 1897 | |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1898 | |
| 1899 | if (ImageInfo.Process != M_SOF0){ |
| 1900 | // don't show it if its the plain old boring 'baseline' process, but do |
| 1901 | // show it if its something else, like 'progressive' (used on web sometimes) |
| 1902 | int a; |
| 1903 | for (a=0;;a++){ |
| 1904 | if (a >= (int)PROCESS_TABLE_SIZE){ |
| 1905 | // ran off the end of the table. |
| 1906 | printf("Jpeg process : Unknown\n"); |
| 1907 | break; |
| 1908 | } |
| 1909 | if (ProcessTable[a].Tag == ImageInfo.Process){ |
| 1910 | printf("Jpeg process : %s\n",ProcessTable[a].Desc); |
| 1911 | break; |
| 1912 | } |
| 1913 | } |
| 1914 | } |
| 1915 | |
| 1916 | if (ImageInfo.GpsInfoPresent){ |
| 1917 | printf("GPS Latitude : %s\n",ImageInfo.GpsLat); |
| 1918 | printf("GPS Longitude: %s\n",ImageInfo.GpsLong); |
| 1919 | if (ImageInfo.GpsAlt[0]) printf("GPS Altitude : %s\n",ImageInfo.GpsAlt); |
| 1920 | } |
| 1921 | |
| 1922 | // Print the comment. Print 'Comment:' for each new line of comment. |
| 1923 | if (ImageInfo.Comments[0]){ |
| 1924 | int a,c; |
| 1925 | printf("Comment : "); |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1926 | if (!ImageInfo.CommentWidchars){ |
| 1927 | for (a=0;a<MAX_COMMENT_SIZE;a++){ |
| 1928 | c = ImageInfo.Comments[a]; |
| 1929 | if (c == '\0') break; |
| 1930 | if (c == '\n'){ |
| 1931 | // Do not start a new line if the string ends with a carriage return. |
| 1932 | if (ImageInfo.Comments[a+1] != '\0'){ |
| 1933 | printf("\nComment : "); |
| 1934 | }else{ |
| 1935 | printf("\n"); |
| 1936 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1937 | }else{ |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1938 | putchar(c); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1939 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1940 | } |
Chih-Chung Chang | d6a02c3 | 2009-03-24 20:34:28 -0700 | [diff] [blame] | 1941 | printf("\n"); |
| 1942 | }else{ |
| 1943 | printf("%.*ls\n", ImageInfo.CommentWidchars, (wchar_t *)ImageInfo.Comments); |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1944 | } |
The Android Open Source Project | 34a2564 | 2009-03-03 19:30:03 -0800 | [diff] [blame] | 1945 | } |
| 1946 | if (ImageInfo.ThumbnailOffset){ |
| 1947 | printf("Map: %05d-%05d: Thumbnail\n",ImageInfo.ThumbnailOffset, ImageInfo.ThumbnailOffset+ImageInfo.ThumbnailSize); |
| 1948 | } else { |
| 1949 | printf("NO thumbnail"); |
| 1950 | } |
| 1951 | } |
| 1952 | |
| 1953 | |
| 1954 | //-------------------------------------------------------------------------- |
| 1955 | // Summarize highlights of image info on one line (suitable for grep-ing) |
| 1956 | //-------------------------------------------------------------------------- |
| 1957 | void ShowConciseImageInfo(void) |
| 1958 | { |
| 1959 | printf("\"%s\"",ImageInfo.FileName); |
| 1960 | |
| 1961 | printf(" %dx%d",ImageInfo.Width, ImageInfo.Height); |
| 1962 | |
| 1963 | if (ImageInfo.ExposureTime){ |
| 1964 | if (ImageInfo.ExposureTime <= 0.5){ |
| 1965 | printf(" (1/%d)",(int)(0.5 + 1/ImageInfo.ExposureTime)); |
| 1966 | }else{ |
| 1967 | printf(" (%1.1f)",ImageInfo.ExposureTime); |
| 1968 | } |
| 1969 | } |
| 1970 | |
| 1971 | if (ImageInfo.ApertureFNumber){ |
| 1972 | printf(" f/%3.1f",(double)ImageInfo.ApertureFNumber); |
| 1973 | } |
| 1974 | |
| 1975 | if (ImageInfo.FocalLength35mmEquiv){ |
| 1976 | printf(" f(35)=%dmm",ImageInfo.FocalLength35mmEquiv); |
| 1977 | } |
| 1978 | |
| 1979 | if (ImageInfo.FlashUsed >= 0 && ImageInfo.FlashUsed & 1){ |
| 1980 | printf(" (flash)"); |
| 1981 | } |
| 1982 | |
| 1983 | if (ImageInfo.IsColor == 0){ |
| 1984 | printf(" (bw)"); |
| 1985 | } |
| 1986 | |
| 1987 | printf("\n"); |
| 1988 | } |