Module: LibExif

Extended by:

FFI::Library

Defined in:

lib/ffi-rexif/libexif.rb,
lib/ffi-rexif/data.rb,
lib/ffi-rexif/version.rb,
lib/ffi-rexif/content.rb

Overview

A low-level Ruby FFI wrapper for libexif.

See Also:

• libexif API documentation

Defined Under Namespace

Classes: Content, Data

Constant Summary

VERSION =

Current version of ffi-rexif.

"0.1.0"

IFD =

:nodoc:

enum :ifd, [
  :EXIF_IFD_0, 0,
  :EXIF_IFD_1,
  :EXIF_IFD_EXIF,
  :EXIF_IFD_GPS,
  :EXIF_IFD_INTEROPERABILITY,
  :EXIF_IFD_COUNT,
]

ExifTag =

:nodoc:

enum :exif_tag, [
  :EXIF_TAG_INTEROPERABILITY_INDEX, 0x0001,
  :EXIF_TAG_INTEROPERABILITY_VERSION, 0x0002,
  :EXIF_TAG_NEW_SUBFILE_TYPE, 0x00fe,
  :EXIF_TAG_IMAGE_WIDTH, 0x0100,
  :EXIF_TAG_IMAGE_LENGTH, 0x0101,
  :EXIF_TAG_BITS_PER_SAMPLE, 0x0102,
  :EXIF_TAG_COMPRESSION, 0x0103,
  :EXIF_TAG_PHOTOMETRIC_INTERPRETATION, 0x0106,
  :EXIF_TAG_FILL_ORDER, 0x010a,
  :EXIF_TAG_DOCUMENT_NAME, 0x010d,
  :EXIF_TAG_IMAGE_DESCRIPTION, 0x010e,
  :EXIF_TAG_MAKE, 0x010f,
  :EXIF_TAG_MODEL, 0x0110,
  :EXIF_TAG_STRIP_OFFSETS, 0x0111,
  :EXIF_TAG_ORIENTATION, 0x0112,
  :EXIF_TAG_SAMPLES_PER_PIXEL, 0x0115,
  :EXIF_TAG_ROWS_PER_STRIP, 0x0116,
  :EXIF_TAG_STRIP_BYTE_COUNTS, 0x0117,
  :EXIF_TAG_X_RESOLUTION, 0x011a,
  :EXIF_TAG_Y_RESOLUTION, 0x011b,
  :EXIF_TAG_PLANAR_CONFIGURATION, 0x011c,
  :EXIF_TAG_RESOLUTION_UNIT, 0x0128,
  :EXIF_TAG_TRANSFER_FUNCTION, 0x012d,
  :EXIF_TAG_SOFTWARE, 0x0131,
  :EXIF_TAG_DATE_TIME, 0x0132,
  :EXIF_TAG_ARTIST, 0x013b,
  :EXIF_TAG_WHITE_POINT, 0x013e,
  :EXIF_TAG_PRIMARY_CHROMATICITIES, 0x013f,
  :EXIF_TAG_SUB_IFDS, 0x014a,
  :EXIF_TAG_TRANSFER_RANGE, 0x0156,
  :EXIF_TAG_JPEG_PROC, 0x0200,
  :EXIF_TAG_JPEG_INTERCHANGE_FORMAT, 0x0201,
  :EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH, 0x0202,
  :EXIF_TAG_YCBCR_COEFFICIENTS, 0x0211,
  :EXIF_TAG_YCBCR_SUB_SAMPLING, 0x0212,
  :EXIF_TAG_YCBCR_POSITIONING, 0x0213,
  :EXIF_TAG_REFERENCE_BLACK_WHITE, 0x0214,
  :EXIF_TAG_XML_PACKET, 0x02bc,
  :EXIF_TAG_RELATED_IMAGE_FILE_FORMAT, 0x1000,
  :EXIF_TAG_RELATED_IMAGE_WIDTH, 0x1001,
  :EXIF_TAG_RELATED_IMAGE_LENGTH, 0x1002,
  :EXIF_TAG_CFA_REPEAT_PATTERN_DIM, 0x828d,
  :EXIF_TAG_CFA_PATTERN, 0x828e,
  :EXIF_TAG_BATTERY_LEVEL, 0x828f,
  :EXIF_TAG_COPYRIGHT, 0x8298,
  :EXIF_TAG_EXPOSURE_TIME, 0x829a,
  :EXIF_TAG_FNUMBER, 0x829d,
  :EXIF_TAG_IPTC_NAA, 0x83bb,
  :EXIF_TAG_IMAGE_RESOURCES, 0x8649,
  :EXIF_TAG_EXIF_IFD_POINTER, 0x8769,
  :EXIF_TAG_INTER_COLOR_PROFILE, 0x8773,
  :EXIF_TAG_EXPOSURE_PROGRAM, 0x8822,
  :EXIF_TAG_SPECTRAL_SENSITIVITY, 0x8824,
  :EXIF_TAG_GPS_INFO_IFD_POINTER, 0x8825,
  :EXIF_TAG_ISO_SPEED_RATINGS, 0x8827,
  :EXIF_TAG_OECF, 0x8828,
  :EXIF_TAG_TIME_ZONE_OFFSET, 0x882a,
  :EXIF_TAG_EXIF_VERSION, 0x9000,
  :EXIF_TAG_DATE_TIME_ORIGINAL, 0x9003,
  :EXIF_TAG_DATE_TIME_DIGITIZED, 0x9004,
  :EXIF_TAG_COMPONENTS_CONFIGURATION, 0x9101,
  :EXIF_TAG_COMPRESSED_BITS_PER_PIXEL, 0x9102,
  :EXIF_TAG_SHUTTER_SPEED_VALUE, 0x9201,
  :EXIF_TAG_APERTURE_VALUE, 0x9202,
  :EXIF_TAG_BRIGHTNESS_VALUE, 0x9203,
  :EXIF_TAG_EXPOSURE_BIAS_VALUE, 0x9204,
  :EXIF_TAG_MAX_APERTURE_VALUE, 0x9205,
  :EXIF_TAG_SUBJECT_DISTANCE, 0x9206,
  :EXIF_TAG_METERING_MODE, 0x9207,
  :EXIF_TAG_LIGHT_SOURCE, 0x9208,
  :EXIF_TAG_FLASH, 0x9209,
  :EXIF_TAG_FOCAL_LENGTH, 0x920a,
  :EXIF_TAG_SUBJECT_AREA, 0x9214,
  :EXIF_TAG_TIFF_EP_STANDARD_ID, 0x9216,
  :EXIF_TAG_MAKER_NOTE, 0x927c,
  :EXIF_TAG_USER_COMMENT, 0x9286,
  :EXIF_TAG_SUB_SEC_TIME, 0x9290,
  :EXIF_TAG_SUB_SEC_TIME_ORIGINAL, 0x9291,
  :EXIF_TAG_SUB_SEC_TIME_DIGITIZED, 0x9292,
  :EXIF_TAG_XP_TITLE, 0x9c9b,
  :EXIF_TAG_XP_COMMENT, 0x9c9c,
  :EXIF_TAG_XP_AUTHOR, 0x9c9d,
  :EXIF_TAG_XP_KEYWORDS, 0x9c9e,
  :EXIF_TAG_XP_SUBJECT, 0x9c9f,
  :EXIF_TAG_FLASH_PIX_VERSION, 0xa000,
  :EXIF_TAG_COLOR_SPACE, 0xa001,
  :EXIF_TAG_PIXEL_X_DIMENSION, 0xa002,
  :EXIF_TAG_PIXEL_Y_DIMENSION, 0xa003,
  :EXIF_TAG_RELATED_SOUND_FILE, 0xa004,
  :EXIF_TAG_INTEROPERABILITY_IFD_POINTER, 0xa005,
  :EXIF_TAG_FLASH_ENERGY, 0xa20b,
  :EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE, 0xa20c,
  :EXIF_TAG_FOCAL_PLANE_X_RESOLUTION, 0xa20e,
  :EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION, 0xa20f,
  :EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT, 0xa210,
  :EXIF_TAG_SUBJECT_LOCATION, 0xa214,
  :EXIF_TAG_EXPOSURE_INDEX, 0xa215,
  :EXIF_TAG_SENSING_METHOD, 0xa217,
  :EXIF_TAG_FILE_SOURCE, 0xa300,
  :EXIF_TAG_SCENE_TYPE, 0xa301,
  :EXIF_TAG_NEW_CFA_PATTERN, 0xa302,
  :EXIF_TAG_CUSTOM_RENDERED, 0xa401,
  :EXIF_TAG_EXPOSURE_MODE, 0xa402,
  :EXIF_TAG_WHITE_BALANCE, 0xa403,
  :EXIF_TAG_DIGITAL_ZOOM_RATIO, 0xa404,
  :EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM, 0xa405,
  :EXIF_TAG_SCENE_CAPTURE_TYPE, 0xa406,
  :EXIF_TAG_GAIN_CONTROL, 0xa407,
  :EXIF_TAG_CONTRAST, 0xa408,
  :EXIF_TAG_SATURATION, 0xa409,
  :EXIF_TAG_SHARPNESS, 0xa40a,
  :EXIF_TAG_DEVICE_SETTING_DESCRIPTION, 0xa40b,
  :EXIF_TAG_SUBJECT_DISTANCE_RANGE, 0xa40c,
  :EXIF_TAG_IMAGE_UNIQUE_ID, 0xa420,
  :EXIF_TAG_GAMMA, 0xa500,
  :EXIF_TAG_PRINT_IMAGE_MATCHING, 0xc4a5,
  :EXIF_TAG_PADDING, 0xea1c,
]