Add a struct for displaying a value in a tag-specific way.
This commit is contained in:
KAMADA Ken'ichi
parent
3736693836
commit
0d9551af0f
377
src/tag.rs
377
src/tag.rs
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@ -26,6 +26,7 @@
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use std::fmt;
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use value;
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use value::Value;
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/// A tag of a TIFF field.
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@ -109,7 +110,7 @@ macro_rules! generate_well_known_tag_constants {
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$( |$ctx:path| $(
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// Copy the doc attribute to the actual definition.
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$( #[$attr:meta] )*
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($name:ident, $num:expr, $defval:expr, $desc:expr)
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($name:ident, $num:expr, $defval:expr, $dispval:ident, $desc:expr)
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),+, )+
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) => (
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/// A module that contains Exif tag constants.
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@ -138,18 +139,25 @@ macro_rules! generate_well_known_tag_constants {
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// Use a separate module to avoid name conflicts between
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// const Tag and static TagInfo.
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mod tag_info {
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use std::fmt;
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use value::Value;
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use value::DefaultValue;
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pub struct TagInfo {
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pub name: &'static str,
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pub desc: &'static str,
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pub default: DefaultValue,
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pub dispval: fn(&mut fmt::Write, &Value) -> fmt::Result,
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}
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$($(
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#[allow(non_upper_case_globals)]
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pub static $name: TagInfo = TagInfo {
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name: stringify!($name), desc: $desc, default: $defval };
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name: stringify!($name),
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desc: $desc,
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default: $defval,
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dispval: super::$dispval,
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};
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)+)+
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}
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@ -172,323 +180,400 @@ generate_well_known_tag_constants!(
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/// A pointer to the Exif IFD. This is used for the internal structure
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/// of Exif data and will not be returned to the user.
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(ExifIFDPointer, 0x8769, DefaultValue::None,
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(ExifIFDPointer, 0x8769, DefaultValue::None, d_tbd,
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"Exif IFD pointer"),
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/// A pointer to the GPS IFD. This is used for the internal structure
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/// of Exif data and will not be returned to the user.
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(GPSInfoIFDPointer, 0x8825, DefaultValue::None,
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(GPSInfoIFDPointer, 0x8825, DefaultValue::None, d_tbd,
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"GPS Info IFD pointer"),
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|Context::Exif|
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/// A pointer to the interoperability IFD. This is used for the internal
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/// structure of Exif data and will not be returned to the user.
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(InteropIFDPointer, 0xa005, DefaultValue::None,
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(InteropIFDPointer, 0xa005, DefaultValue::None, d_tbd,
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"Interoperability IFD pointer"),
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// TIFF primary and thumbnail attributes [EXIF23 4.6.4 Table 4,
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// 4.6.8 Table 17, and 4.6.8 Table 21].
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|Context::Tiff|
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(ImageWidth, 0x100, DefaultValue::None,
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(ImageWidth, 0x100, DefaultValue::None, d_tbd,
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"Image width"),
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(ImageLength, 0x101, DefaultValue::None,
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(ImageLength, 0x101, DefaultValue::None, d_tbd,
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"Image height"),
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(BitsPerSample, 0x102, DefaultValue::Short(&[8, 8, 8]),
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(BitsPerSample, 0x102, DefaultValue::Short(&[8, 8, 8]), d_tbd,
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"Number of bits per component"),
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(Compression, 0x103, DefaultValue::None,
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(Compression, 0x103, DefaultValue::None, d_tbd,
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"Compression scheme"),
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(PhotometricInterpretation, 0x106, DefaultValue::None,
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(PhotometricInterpretation, 0x106, DefaultValue::None, d_tbd,
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"Pixel composition"),
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(ImageDescription, 0x10e, DefaultValue::None,
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(ImageDescription, 0x10e, DefaultValue::None, d_tbd,
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"Image title"),
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(Make, 0x10f, DefaultValue::None,
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(Make, 0x10f, DefaultValue::None, d_tbd,
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"Manufacturer of image input equipment"),
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(Model, 0x110, DefaultValue::None,
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(Model, 0x110, DefaultValue::None, d_tbd,
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"Model of image input equipment"),
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(StripOffsets, 0x111, DefaultValue::None,
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(StripOffsets, 0x111, DefaultValue::None, d_tbd,
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"Image data location"),
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(Orientation, 0x112, DefaultValue::Short(&[1]),
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(Orientation, 0x112, DefaultValue::Short(&[1]), d_tbd,
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"Orientation of image"),
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(SamplesPerPixel, 0x115, DefaultValue::Short(&[3]),
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(SamplesPerPixel, 0x115, DefaultValue::Short(&[3]), d_tbd,
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"Number of components"),
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(RowsPerStrip, 0x116, DefaultValue::None,
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(RowsPerStrip, 0x116, DefaultValue::None, d_tbd,
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"Number of rows per strip"),
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(StripByteCounts, 0x117, DefaultValue::None,
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(StripByteCounts, 0x117, DefaultValue::None, d_tbd,
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"Bytes per compressed strip"),
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(XResolution, 0x11a, DefaultValue::Rational(&[(72, 1)]),
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(XResolution, 0x11a, DefaultValue::Rational(&[(72, 1)]), d_tbd,
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"Image resolution in width direction"),
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(YResolution, 0x11b, DefaultValue::Rational(&[(72, 1)]),
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(YResolution, 0x11b, DefaultValue::Rational(&[(72, 1)]), d_tbd,
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"Image resolution in height direction"),
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(PlanarConfiguration, 0x11c, DefaultValue::Short(&[1]),
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(PlanarConfiguration, 0x11c, DefaultValue::Short(&[1]), d_tbd,
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"Image data arrangement"),
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(ResolutionUnit, 0x128, DefaultValue::Short(&[2]),
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(ResolutionUnit, 0x128, DefaultValue::Short(&[2]), d_tbd,
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"Unit of X and Y resolution"),
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(TransferFunction, 0x12d, DefaultValue::None,
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(TransferFunction, 0x12d, DefaultValue::None, d_tbd,
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"Transfer function"),
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(Software, 0x131, DefaultValue::None,
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(Software, 0x131, DefaultValue::None, d_tbd,
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"Software used"),
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(DateTime, 0x132, DefaultValue::None,
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(DateTime, 0x132, DefaultValue::None, d_tbd,
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"File change date and time"),
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(Artist, 0x13b, DefaultValue::None,
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(Artist, 0x13b, DefaultValue::None, d_tbd,
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"Person who created the image"),
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(WhitePoint, 0x13e, DefaultValue::None,
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(WhitePoint, 0x13e, DefaultValue::None, d_tbd,
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"White point chromaticity"),
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(PrimaryChromaticities, 0x13f, DefaultValue::None,
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(PrimaryChromaticities, 0x13f, DefaultValue::None, d_tbd,
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"Chromaticities of primaries"),
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(JPEGInterchangeFormat, 0x201, DefaultValue::None,
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(JPEGInterchangeFormat, 0x201, DefaultValue::None, d_tbd,
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"Offset to JPEG SOI"),
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(JPEGInterchangeFormatLength, 0x202, DefaultValue::None,
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(JPEGInterchangeFormatLength, 0x202, DefaultValue::None, d_tbd,
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"Bytes of JPEG data"),
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(YCbCrCoefficients, 0x211, DefaultValue::Unspecified,
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(YCbCrCoefficients, 0x211, DefaultValue::Unspecified, d_tbd,
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"Color space transformation matrix coefficients"),
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(YCbCrSubSampling, 0x212, DefaultValue::None,
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(YCbCrSubSampling, 0x212, DefaultValue::None, d_tbd,
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"Subsampling ratio of Y to C"),
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(YCbCrPositioning, 0x213, DefaultValue::Short(&[1]),
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(YCbCrPositioning, 0x213, DefaultValue::Short(&[1]), d_tbd,
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"Y and C positioning"),
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(ReferenceBlackWhite, 0x214, DefaultValue::ContextDependent,
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(ReferenceBlackWhite, 0x214, DefaultValue::ContextDependent, d_tbd,
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"Pair of black and white reference values"),
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(Copyright, 0x8298, DefaultValue::None,
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(Copyright, 0x8298, DefaultValue::None, d_tbd,
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"Copyright holder"),
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// Exif IFD attributes [EXIF23 4.6.5 Table 7 and 4.6.8 Table 18].
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|Context::Exif|
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(ExposureTime, 0x829a, DefaultValue::None,
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(ExposureTime, 0x829a, DefaultValue::None, d_tbd,
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"Exposure time"),
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(FNumber, 0x829d, DefaultValue::None,
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(FNumber, 0x829d, DefaultValue::None, d_tbd,
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"F number"),
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(ExposureProgram, 0x8822, DefaultValue::None,
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(ExposureProgram, 0x8822, DefaultValue::None, d_tbd,
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"Exposure program"),
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(SpectralSensitivity, 0x8824, DefaultValue::None,
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(SpectralSensitivity, 0x8824, DefaultValue::None, d_tbd,
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"Spectral sensitivity"),
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(PhotographicSensitivity, 0x8827, DefaultValue::None,
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(PhotographicSensitivity, 0x8827, DefaultValue::None, d_tbd,
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"Photographic sensitivity"),
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(OECF, 0x8828, DefaultValue::None,
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(OECF, 0x8828, DefaultValue::None, d_tbd,
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"Optoelectric conversion factor"),
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(SensitivityType, 0x8830, DefaultValue::None,
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(SensitivityType, 0x8830, DefaultValue::None, d_tbd,
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"Sensitivity type"),
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(StandardOutputSensitivity, 0x8831, DefaultValue::None,
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(StandardOutputSensitivity, 0x8831, DefaultValue::None, d_tbd,
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"Standard output sensitivity"),
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(RecommendedExposureIndex, 0x8832, DefaultValue::None,
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(RecommendedExposureIndex, 0x8832, DefaultValue::None, d_tbd,
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"Recommended exposure index"),
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(ISOSpeed, 0x8833, DefaultValue::None,
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(ISOSpeed, 0x8833, DefaultValue::None, d_tbd,
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"ISO speed"),
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(ISOSpeedLatitudeyyy, 0x8834, DefaultValue::None,
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(ISOSpeedLatitudeyyy, 0x8834, DefaultValue::None, d_tbd,
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"ISO speed latitude yyy"),
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(ISOSpeedLatitudezzz, 0x8835, DefaultValue::None,
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(ISOSpeedLatitudezzz, 0x8835, DefaultValue::None, d_tbd,
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"ISO speed latitude zzz"),
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// The absence of this field means non-conformance to Exif, so the default
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// value specified in the standard (e.g., "0231") should not apply.
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(ExifVersion, 0x9000, DefaultValue::None,
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(ExifVersion, 0x9000, DefaultValue::None, d_tbd,
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"Exif version"),
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(DateTimeOriginal, 0x9003, DefaultValue::None,
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(DateTimeOriginal, 0x9003, DefaultValue::None, d_tbd,
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"Date and time of original data generation"),
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(DateTimeDigitized, 0x9004, DefaultValue::None,
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(DateTimeDigitized, 0x9004, DefaultValue::None, d_tbd,
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"Date and time of digital data generation"),
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(OffsetTime, 0x9010, DefaultValue::None,
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(OffsetTime, 0x9010, DefaultValue::None, d_tbd,
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"Offset data of DateTime"),
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(OffsetTimeOriginal, 0x9011, DefaultValue::None,
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(OffsetTimeOriginal, 0x9011, DefaultValue::None, d_tbd,
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"Offset data of DateTimeOriginal"),
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(OffsetTimeDigitized, 0x9012, DefaultValue::None,
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(OffsetTimeDigitized, 0x9012, DefaultValue::None, d_tbd,
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"Offset data of DateTimeDigitized"),
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(ComponentsConfiguration, 0x9101, DefaultValue::ContextDependent,
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(ComponentsConfiguration, 0x9101, DefaultValue::ContextDependent, d_tbd,
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"Meaning of each component"),
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(CompressedBitsPerPixel, 0x9102, DefaultValue::None,
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(CompressedBitsPerPixel, 0x9102, DefaultValue::None, d_tbd,
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"Image compression mode"),
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(ShutterSpeedValue, 0x9201, DefaultValue::None,
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(ShutterSpeedValue, 0x9201, DefaultValue::None, d_tbd,
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"Shutter speed"),
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(ApertureValue, 0x9202, DefaultValue::None,
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(ApertureValue, 0x9202, DefaultValue::None, d_tbd,
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"Aperture"),
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(BrightnessValue, 0x9203, DefaultValue::None,
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(BrightnessValue, 0x9203, DefaultValue::None, d_tbd,
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"Brightness"),
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(ExposureBiasValue, 0x9204, DefaultValue::None,
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(ExposureBiasValue, 0x9204, DefaultValue::None, d_tbd,
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"Exposure bias"),
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(MaxApertureValue, 0x9205, DefaultValue::None,
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(MaxApertureValue, 0x9205, DefaultValue::None, d_tbd,
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"Maximum lens aperture"),
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(SubjectDistance, 0x9206, DefaultValue::None,
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(SubjectDistance, 0x9206, DefaultValue::None, d_tbd,
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"Subject distance"),
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(MeteringMode, 0x9207, DefaultValue::Short(&[0]),
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(MeteringMode, 0x9207, DefaultValue::Short(&[0]), d_tbd,
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"Metering mode"),
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(LightSource, 0x9208, DefaultValue::Short(&[0]),
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(LightSource, 0x9208, DefaultValue::Short(&[0]), d_tbd,
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"Light source"),
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(Flash, 0x9209, DefaultValue::Unspecified,
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(Flash, 0x9209, DefaultValue::Unspecified, d_tbd,
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"Flash"),
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(FocalLength, 0x920a, DefaultValue::None,
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(FocalLength, 0x920a, DefaultValue::None, d_tbd,
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"Lens focal length"),
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(SubjectArea, 0x9214, DefaultValue::None,
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(SubjectArea, 0x9214, DefaultValue::None, d_tbd,
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"Subject area"),
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(MakerNote, 0x927c, DefaultValue::None,
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(MakerNote, 0x927c, DefaultValue::None, d_tbd,
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"Manufacturer notes"),
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(UserComment, 0x9286, DefaultValue::None,
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(UserComment, 0x9286, DefaultValue::None, d_tbd,
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"User comments"),
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(SubSecTime, 0x9290, DefaultValue::None,
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(SubSecTime, 0x9290, DefaultValue::None, d_tbd,
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"DateTime subseconds"),
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(SubSecTimeOriginal, 0x9291, DefaultValue::None,
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(SubSecTimeOriginal, 0x9291, DefaultValue::None, d_tbd,
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"DateTimeOriginal subseconds"),
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(SubSecTimeDigitized, 0x9292, DefaultValue::None,
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(SubSecTimeDigitized, 0x9292, DefaultValue::None, d_tbd,
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"DateTimeDigitized subseconds"),
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(Temperature, 0x9400, DefaultValue::None,
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(Temperature, 0x9400, DefaultValue::None, d_tbd,
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"Temperature"),
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(Humidity, 0x9401, DefaultValue::None,
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(Humidity, 0x9401, DefaultValue::None, d_tbd,
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"Humidity"),
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(Pressure, 0x9402, DefaultValue::None,
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(Pressure, 0x9402, DefaultValue::None, d_tbd,
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"Pressure"),
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(WaterDepth, 0x9403, DefaultValue::None,
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(WaterDepth, 0x9403, DefaultValue::None, d_tbd,
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"Water depth"),
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(Acceleration, 0x9404, DefaultValue::None,
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(Acceleration, 0x9404, DefaultValue::None, d_tbd,
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"Acceleration"),
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(CameraElevationAngle, 0x9405, DefaultValue::None,
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(CameraElevationAngle, 0x9405, DefaultValue::None, d_tbd,
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"Camera elevation angle"),
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(FlashpixVersion, 0xa000, DefaultValue::Undefined(b"0100"),
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(FlashpixVersion, 0xa000, DefaultValue::Undefined(b"0100"), d_tbd,
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"Supported Flashpix version"),
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(ColorSpace, 0xa001, DefaultValue::Unspecified,
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(ColorSpace, 0xa001, DefaultValue::Unspecified, d_tbd,
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"Color space information"),
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(PixelXDimension, 0xa002, DefaultValue::None,
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(PixelXDimension, 0xa002, DefaultValue::None, d_tbd,
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"Valid image width"),
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(PixelYDimension, 0xa003, DefaultValue::Unspecified,
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(PixelYDimension, 0xa003, DefaultValue::Unspecified, d_tbd,
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"Valid image height"),
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(RelatedSoundFile, 0xa004, DefaultValue::None,
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(RelatedSoundFile, 0xa004, DefaultValue::None, d_tbd,
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"Related audio file"),
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(FlashEnergy, 0xa20b, DefaultValue::None,
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(FlashEnergy, 0xa20b, DefaultValue::None, d_tbd,
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"Flash energy"),
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(SpatialFrequencyResponse, 0xa20c, DefaultValue::None,
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(SpatialFrequencyResponse, 0xa20c, DefaultValue::None, d_tbd,
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"Spatial frequency response"),
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(FocalPlaneXResolution, 0xa20e, DefaultValue::None,
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(FocalPlaneXResolution, 0xa20e, DefaultValue::None, d_tbd,
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"Focal plane X resolution"),
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(FocalPlaneYResolution, 0xa20f, DefaultValue::None,
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(FocalPlaneYResolution, 0xa20f, DefaultValue::None, d_tbd,
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"Focal plane Y resolution"),
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(FocalPlaneResolutionUnit, 0xa210, DefaultValue::Short(&[2]),
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(FocalPlaneResolutionUnit, 0xa210, DefaultValue::Short(&[2]), d_tbd,
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"Focal plane resolution unit"),
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(SubjectLocation, 0xa214, DefaultValue::None,
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(SubjectLocation, 0xa214, DefaultValue::None, d_tbd,
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"Subject location"),
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(ExposureIndex, 0xa215, DefaultValue::None,
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(ExposureIndex, 0xa215, DefaultValue::None, d_tbd,
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"Exposure index"),
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(SensingMethod, 0xa217, DefaultValue::None,
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(SensingMethod, 0xa217, DefaultValue::None, d_tbd,
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"Sensing method"),
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(FileSource, 0xa300, DefaultValue::Undefined(&[3]),
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(FileSource, 0xa300, DefaultValue::Undefined(&[3]), d_tbd,
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"File source"),
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(SceneType, 0xa301, DefaultValue::Undefined(&[1]),
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(SceneType, 0xa301, DefaultValue::Undefined(&[1]), d_tbd,
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"Scene type"),
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(CFAPattern, 0xa302, DefaultValue::None,
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(CFAPattern, 0xa302, DefaultValue::None, d_tbd,
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"CFA pattern"),
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(CustomRendered, 0xa401, DefaultValue::Short(&[0]),
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(CustomRendered, 0xa401, DefaultValue::Short(&[0]), d_tbd,
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"Custom image processing"),
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(ExposureMode, 0xa402, DefaultValue::None,
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(ExposureMode, 0xa402, DefaultValue::None, d_tbd,
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"Exposure mode"),
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(WhiteBalance, 0xa403, DefaultValue::None,
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(WhiteBalance, 0xa403, DefaultValue::None, d_tbd,
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"White balance"),
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(DigitalZoomRatio, 0xa404, DefaultValue::None,
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(DigitalZoomRatio, 0xa404, DefaultValue::None, d_tbd,
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"Digital zoom ratio"),
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(FocalLengthIn35mmFilm, 0xa405, DefaultValue::None,
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(FocalLengthIn35mmFilm, 0xa405, DefaultValue::None, d_tbd,
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"Focal length in 35 mm film"),
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(SceneCaptureType, 0xa406, DefaultValue::Short(&[0]),
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(SceneCaptureType, 0xa406, DefaultValue::Short(&[0]), d_tbd,
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"Scene capture type"),
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(GainControl, 0xa407, DefaultValue::None,
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(GainControl, 0xa407, DefaultValue::None, d_tbd,
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"Gain control"),
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(Contrast, 0xa408, DefaultValue::Short(&[0]),
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(Contrast, 0xa408, DefaultValue::Short(&[0]), d_tbd,
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"Contrast"),
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(Saturation, 0xa409, DefaultValue::Short(&[0]),
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(Saturation, 0xa409, DefaultValue::Short(&[0]), d_tbd,
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"Saturation"),
|
||||
(Sharpness, 0xa40a, DefaultValue::Short(&[0]),
|
||||
(Sharpness, 0xa40a, DefaultValue::Short(&[0]), d_tbd,
|
||||
"Sharpness"),
|
||||
(DeviceSettingDescription, 0xa40b, DefaultValue::None,
|
||||
(DeviceSettingDescription, 0xa40b, DefaultValue::None, d_tbd,
|
||||
"Device settings description"),
|
||||
(SubjectDistanceRange, 0xa40c, DefaultValue::None,
|
||||
(SubjectDistanceRange, 0xa40c, DefaultValue::None, d_tbd,
|
||||
"Subject distance range"),
|
||||
(ImageUniqueID, 0xa420, DefaultValue::None,
|
||||
(ImageUniqueID, 0xa420, DefaultValue::None, d_tbd,
|
||||
"Unique image ID"),
|
||||
(CameraOwnerName, 0xa430, DefaultValue::None,
|
||||
(CameraOwnerName, 0xa430, DefaultValue::None, d_tbd,
|
||||
"Camera owner name"),
|
||||
(BodySerialNumber, 0xa431, DefaultValue::None,
|
||||
(BodySerialNumber, 0xa431, DefaultValue::None, d_tbd,
|
||||
"Body serial number"),
|
||||
(LensSpecification, 0xa432, DefaultValue::None,
|
||||
(LensSpecification, 0xa432, DefaultValue::None, d_tbd,
|
||||
"Lens specification"),
|
||||
(LensMake, 0xa433, DefaultValue::None,
|
||||
(LensMake, 0xa433, DefaultValue::None, d_tbd,
|
||||
"Lens make"),
|
||||
(LensModel, 0xa434, DefaultValue::None,
|
||||
(LensModel, 0xa434, DefaultValue::None, d_tbd,
|
||||
"Lens model"),
|
||||
(LensSerialNumber, 0xa435, DefaultValue::None,
|
||||
(LensSerialNumber, 0xa435, DefaultValue::None, d_tbd,
|
||||
"Lens serial number"),
|
||||
(Gamma, 0xa500, DefaultValue::None,
|
||||
(Gamma, 0xa500, DefaultValue::None, d_tbd,
|
||||
"Gamma"),
|
||||
|
||||
// GPS attributes [EXIF23 4.6.6 Table 15 and 4.6.8 Table 19].
|
||||
|Context::Gps|
|
||||
|
||||
// Depends on the Exif version.
|
||||
(GPSVersionID, 0x0, DefaultValue::ContextDependent,
|
||||
(GPSVersionID, 0x0, DefaultValue::ContextDependent, d_tbd,
|
||||
"GPS tag version"),
|
||||
(GPSLatitudeRef, 0x1, DefaultValue::None,
|
||||
(GPSLatitudeRef, 0x1, DefaultValue::None, d_tbd,
|
||||
"North or south latitude"),
|
||||
(GPSLatitude, 0x2, DefaultValue::None,
|
||||
(GPSLatitude, 0x2, DefaultValue::None, d_tbd,
|
||||
"Latitude"),
|
||||
(GPSLongitudeRef, 0x3, DefaultValue::None,
|
||||
(GPSLongitudeRef, 0x3, DefaultValue::None, d_tbd,
|
||||
"East or West Longitude"),
|
||||
(GPSLongitude, 0x4, DefaultValue::None,
|
||||
(GPSLongitude, 0x4, DefaultValue::None, d_tbd,
|
||||
"Longitude"),
|
||||
(GPSAltitudeRef, 0x5, DefaultValue::Byte(&[0]),
|
||||
(GPSAltitudeRef, 0x5, DefaultValue::Byte(&[0]), d_tbd,
|
||||
"Altitude reference"),
|
||||
(GPSAltitude, 0x6, DefaultValue::None,
|
||||
(GPSAltitude, 0x6, DefaultValue::None, d_tbd,
|
||||
"Altitude"),
|
||||
(GPSTimeStamp, 0x7, DefaultValue::None,
|
||||
(GPSTimeStamp, 0x7, DefaultValue::None, d_tbd,
|
||||
"GPS time (atomic clock)"),
|
||||
(GPSSatellites, 0x8, DefaultValue::None,
|
||||
(GPSSatellites, 0x8, DefaultValue::None, d_tbd,
|
||||
"GPS satellites used for measurement"),
|
||||
(GPSStatus, 0x9, DefaultValue::None,
|
||||
(GPSStatus, 0x9, DefaultValue::None, d_tbd,
|
||||
"GPS receiver status"),
|
||||
(GPSMeasureMode, 0xa, DefaultValue::None,
|
||||
(GPSMeasureMode, 0xa, DefaultValue::None, d_tbd,
|
||||
"GPS measurement mode"),
|
||||
(GPSDOP, 0xb, DefaultValue::None,
|
||||
(GPSDOP, 0xb, DefaultValue::None, d_tbd,
|
||||
"Measurement precision"),
|
||||
(GPSSpeedRef, 0xc, DefaultValue::Ascii(&[b"K"]),
|
||||
(GPSSpeedRef, 0xc, DefaultValue::Ascii(&[b"K"]), d_tbd,
|
||||
"Speed unit"),
|
||||
(GPSSpeed, 0xd, DefaultValue::None,
|
||||
(GPSSpeed, 0xd, DefaultValue::None, d_tbd,
|
||||
"Speed of GPS receiver"),
|
||||
(GPSTrackRef, 0xe, DefaultValue::Ascii(&[b"T"]),
|
||||
(GPSTrackRef, 0xe, DefaultValue::Ascii(&[b"T"]), d_tbd,
|
||||
"Reference for direction of movement"),
|
||||
(GPSTrack, 0xf, DefaultValue::None,
|
||||
(GPSTrack, 0xf, DefaultValue::None, d_tbd,
|
||||
"Direction of movement"),
|
||||
(GPSImgDirectionRef, 0x10, DefaultValue::Ascii(&[b"T"]),
|
||||
(GPSImgDirectionRef, 0x10, DefaultValue::Ascii(&[b"T"]), d_tbd,
|
||||
"Reference for direction of image"),
|
||||
(GPSImgDirection, 0x11, DefaultValue::None,
|
||||
(GPSImgDirection, 0x11, DefaultValue::None, d_tbd,
|
||||
"Direction of image"),
|
||||
(GPSMapDatum, 0x12, DefaultValue::None,
|
||||
(GPSMapDatum, 0x12, DefaultValue::None, d_tbd,
|
||||
"Geodetic survey data used"),
|
||||
(GPSDestLatitudeRef, 0x13, DefaultValue::None,
|
||||
(GPSDestLatitudeRef, 0x13, DefaultValue::None, d_tbd,
|
||||
"Reference for latitude of destination"),
|
||||
(GPSDestLatitude, 0x14, DefaultValue::None,
|
||||
(GPSDestLatitude, 0x14, DefaultValue::None, d_tbd,
|
||||
"Latitude of destination"),
|
||||
(GPSDestLongitudeRef, 0x15, DefaultValue::None,
|
||||
(GPSDestLongitudeRef, 0x15, DefaultValue::None, d_tbd,
|
||||
"Reference for longitude of destination"),
|
||||
(GPSDestLongitude, 0x16, DefaultValue::None,
|
||||
(GPSDestLongitude, 0x16, DefaultValue::None, d_tbd,
|
||||
"Longitude of destination"),
|
||||
(GPSDestBearingRef, 0x17, DefaultValue::Ascii(&[b"T"]),
|
||||
(GPSDestBearingRef, 0x17, DefaultValue::Ascii(&[b"T"]), d_tbd,
|
||||
"Reference for bearing of destination"),
|
||||
(GPSDestBearing, 0x18, DefaultValue::None,
|
||||
(GPSDestBearing, 0x18, DefaultValue::None, d_tbd,
|
||||
"Bearing of destination"),
|
||||
(GPSDestDistanceRef, 0x19, DefaultValue::Ascii(&[b"K"]),
|
||||
(GPSDestDistanceRef, 0x19, DefaultValue::Ascii(&[b"K"]), d_tbd,
|
||||
"Reference for distance to destination"),
|
||||
(GPSDestDistance, 0x1a, DefaultValue::None,
|
||||
(GPSDestDistance, 0x1a, DefaultValue::None, d_tbd,
|
||||
"Distance to destination"),
|
||||
(GPSProcessingMethod, 0x1b, DefaultValue::None,
|
||||
(GPSProcessingMethod, 0x1b, DefaultValue::None, d_tbd,
|
||||
"Name of GPS processing method"),
|
||||
(GPSAreaInformation, 0x1c, DefaultValue::None,
|
||||
(GPSAreaInformation, 0x1c, DefaultValue::None, d_tbd,
|
||||
"Name of GPS area"),
|
||||
(GPSDateStamp, 0x1d, DefaultValue::None,
|
||||
(GPSDateStamp, 0x1d, DefaultValue::None, d_tbd,
|
||||
"GPS date"),
|
||||
(GPSDifferential, 0x1e, DefaultValue::None,
|
||||
(GPSDifferential, 0x1e, DefaultValue::None, d_tbd,
|
||||
"GPS differential correction"),
|
||||
(GPSHPositioningError, 0x1f, DefaultValue::None,
|
||||
(GPSHPositioningError, 0x1f, DefaultValue::None, d_tbd,
|
||||
"Horizontal positioning error"),
|
||||
|
||||
// Interoperability attributes [EXIF23 4.6.7 Table 16 and 4.6.8 Table 20].
|
||||
|Context::Interop|
|
||||
|
||||
(InteroperabilityIndex, 0x1, DefaultValue::None,
|
||||
(InteroperabilityIndex, 0x1, DefaultValue::None, d_tbd,
|
||||
"Interoperability identification"),
|
||||
);
|
||||
|
||||
// For Value::display_as().
|
||||
pub fn display_value_as<'a>(value: &'a Value, tag: Tag) -> value::Display<'a> {
|
||||
match get_tag_info(tag) {
|
||||
Some(ti) => value::Display { fmt: ti.dispval, value: value },
|
||||
None => value::Display { fmt: d_default, value: value },
|
||||
}
|
||||
}
|
||||
|
||||
fn d_tbd(_w: &mut fmt::Write, _value: &Value) -> fmt::Result {
|
||||
unimplemented!();
|
||||
}
|
||||
|
||||
fn d_default(w: &mut fmt::Write, value: &Value) -> fmt::Result {
|
||||
match *value {
|
||||
Value::Byte(ref v) => d_sub_comma(w, v),
|
||||
Value::Ascii(ref v) => {
|
||||
let mut first = true;
|
||||
for x in v {
|
||||
if !first {
|
||||
try!(w.write_char('\n'));
|
||||
}
|
||||
first = false;
|
||||
try!(d_escape_ascii(w, x));
|
||||
}
|
||||
Ok(())
|
||||
},
|
||||
Value::Short(ref v) => d_sub_comma(w, v),
|
||||
Value::Long(ref v) => d_sub_comma(w, v),
|
||||
Value::Rational(ref v) => d_sub_comma(w, v),
|
||||
Value::SByte(ref v) => d_sub_comma(w, v),
|
||||
Value::Undefined(ref s) => d_sub_hex(w, s),
|
||||
Value::SShort(ref v) => d_sub_comma(w, v),
|
||||
Value::SLong(ref v) => d_sub_comma(w, v),
|
||||
Value::SRational(ref v) => d_sub_comma(w, v),
|
||||
Value::Float(ref v) => d_sub_comma(w, v),
|
||||
Value::Double(ref v) => d_sub_comma(w, v),
|
||||
Value::Unknown(t, c, o) =>
|
||||
write!(w, "unknown value (type={}, count={}, offset={:#x})",
|
||||
t, c, o),
|
||||
}
|
||||
}
|
||||
|
||||
fn d_sub_comma<T>(w: &mut fmt::Write, slice: &[T])
|
||||
-> fmt::Result where T: fmt::Display {
|
||||
let mut first = true;
|
||||
for x in slice {
|
||||
try!(match first {
|
||||
true => write!(w, "{}", x),
|
||||
false => write!(w, ", {}", x),
|
||||
});
|
||||
first = false;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn d_sub_hex(w: &mut fmt::Write, bytes: &[u8]) -> fmt::Result {
|
||||
try!(w.write_str("0x"));
|
||||
for x in bytes {
|
||||
try!(write!(w, "{:02x}", x));
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
fn d_escape_ascii(w: &mut fmt::Write, bytes: &[u8]) -> fmt::Result {
|
||||
for &c in bytes {
|
||||
match c {
|
||||
b'\\' => {
|
||||
try!(w.write_char('\\'));
|
||||
try!(w.write_char(c as char));
|
||||
},
|
||||
0x20...0x7e => try!(w.write_char(c as char)),
|
||||
_ => try!(write!(w, "\\x{:02x}", c)),
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use tag;
|
||||
|
|
|
|||
23
src/value.rs
23
src/value.rs
|
|
@ -68,6 +68,29 @@ pub enum Value<'a> {
|
|||
Unknown(u16, u32, u32),
|
||||
}
|
||||
|
||||
impl<'a> Value<'a> {
|
||||
/// Returns an object that implements `std::fmt::Display` for
|
||||
/// printing a value in a tag-specific format.
|
||||
/// The tag of the value is specified as the argument.
|
||||
#[inline]
|
||||
pub fn display_as(&self, tag: ::tag_priv::Tag) -> Display {
|
||||
::tag_priv::display_value_as(self, tag)
|
||||
}
|
||||
}
|
||||
|
||||
/// Helper struct for printing a value in a tag-specific format.
|
||||
pub struct Display<'a> {
|
||||
pub fmt: fn(&mut fmt::Write, &Value) -> fmt::Result,
|
||||
pub value: &'a Value<'a>,
|
||||
}
|
||||
|
||||
impl<'a> fmt::Display for Display<'a> {
|
||||
#[inline]
|
||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
(self.fmt)(f, self.value)
|
||||
}
|
||||
}
|
||||
|
||||
// Static default values.
|
||||
pub enum DefaultValue {
|
||||
None,
|
||||
|
|
|
|||
Loading…
Reference in New Issue