From d8c947a3e14ae23fe5f823c0ba08c147e0f19a91 Mon Sep 17 00:00:00 2001
From: Janne Mareike Koschinski <janne@kuschku.de>
Date: Sat, 31 Jul 2021 19:15:29 +0200
Subject: [PATCH] Implement basic EXIF support
---
api/image_get.go | 5 +
api/image_list.go | 5 +
docs/EXIF.md | 119 ++++++++++++++
model/image.go | 21 +--
task/image_resize_processor.go | 33 +++-
ui/src/api/model/Image.ts | 3 +
ui/src/components/ImageView.tsx | 51 +++++-
ui/src/metadata/ContrastProcessing.ts | 5 +
ui/src/metadata/ExposureMode.ts | 5 +
ui/src/metadata/ExposureProgram.ts | 10 ++
ui/src/metadata/Flash.ts | 12 ++
ui/src/metadata/FlashMode.ts | 5 +
ui/src/metadata/ImageMetadata.ts | 204 ++++++++++++++++++++++++
ui/src/metadata/LightSource.ts | 21 +++
ui/src/metadata/MeteringMode.ts | 8 +
ui/src/metadata/Ratio.ts | 33 ++++
ui/src/metadata/SceneMode.ts | 6 +
ui/src/metadata/SharpnessProcessing.ts | 5 +
ui/src/metadata/SubjectDistanceRange.ts | 5 +
ui/src/metadata/WhiteBalance.ts | 4 +
20 files changed, 548 insertions(+), 12 deletions(-)
create mode 100644 docs/EXIF.md
create mode 100644 ui/src/metadata/ContrastProcessing.ts
create mode 100644 ui/src/metadata/ExposureMode.ts
create mode 100644 ui/src/metadata/ExposureProgram.ts
create mode 100644 ui/src/metadata/Flash.ts
create mode 100644 ui/src/metadata/FlashMode.ts
create mode 100644 ui/src/metadata/ImageMetadata.ts
create mode 100644 ui/src/metadata/LightSource.ts
create mode 100644 ui/src/metadata/MeteringMode.ts
create mode 100644 ui/src/metadata/Ratio.ts
create mode 100644 ui/src/metadata/SceneMode.ts
create mode 100644 ui/src/metadata/SharpnessProcessing.ts
create mode 100644 ui/src/metadata/SubjectDistanceRange.ts
create mode 100644 ui/src/metadata/WhiteBalance.ts
diff --git a/api/image_get.go b/api/image_get.go
index d1ff4d2..eefc6fd 100644
--- a/api/image_get.go
+++ b/api/image_get.go
@@ -26,6 +26,11 @@ func GetImage(env environment.FrontendEnvironment) http.Handler {
http.Error(writer, err.Error(), http.StatusInternalServerError)
return
}
+ image.Metadata, err = env.Repositories.ImageMetadata.List(image)
+ if err != nil {
+ http.Error(writer, err.Error(), http.StatusInternalServerError)
+ return
+ }
util.ReturnJson(writer, image)
})
diff --git a/api/image_list.go b/api/image_list.go
index eef39a5..755aa9c 100644
--- a/api/image_list.go
+++ b/api/image_list.go
@@ -20,6 +20,11 @@ func ListImages(env environment.FrontendEnvironment) http.Handler {
http.Error(writer, err.Error(), http.StatusInternalServerError)
return
}
+ image.Metadata, err = env.Repositories.ImageMetadata.List(image)
+ if err != nil {
+ http.Error(writer, err.Error(), http.StatusInternalServerError)
+ return
+ }
images[idx] = image
}
diff --git a/docs/EXIF.md b/docs/EXIF.md
new file mode 100644
index 0000000..768be21
--- /dev/null
+++ b/docs/EXIF.md
@@ -0,0 +1,119 @@
+# EXIF metadata format
+
+* `Make`
+ Manufacturer
+* `Model`
+ Device
+* `DateTime`
+* `DateTimeDigitized`
+* `DateTimeOriginal`
+* `DigitalZoomRatio`
+ Zoom
+ - 0 unused
+* `ExposureBiasValue`
+ Exposure
+ -100.0 to +100.0
+* `ExposureMode`
+ Exposure Mode
+ - 0 = auto
+ - 1 = manual
+ - 2 = bracket
+* `ExposureProgram`
+ Exposure Program
+ - 0 undefined
+ - 1 manual
+ - 2 normal
+ - 3 aperture priority
+ - 4 shutter priority
+ - 5 creative (depth of field priority)
+ - 6 action (fast shutter priority)
+ - 7 portrait (object separation priority)
+ - 8 landscape (background in focus priority)
+* `ExposureTime`
+ Shutter in seconds
+* `FNumber`
+ Aperture
+* `Flash`
+ Bitfield of Flash metadata (bits counted from LSB to MSB)
+ - bit 0: flashFired
+ - bit 1: flashStrobeDetectionAvailable
+ - bit 2: flashStrobeDetected
+ - bit 3-4
+ - 0 undefined
+ - 1 always on
+ - 2 always off
+ - 3 auto
+ - bit 5: flashAvailable
+ - bit 6: redEyeReductionAvailable
+* `FlashEnergy`
+ Strobe energy in BCPS
+* `FocalLength`
+ Focal Length in mm
+* `FocalLengthIn35mmFilm`
+ Focal Length in mm compared to a 35mm Film equivalent
+* `ISOSpeedRatings`
+ ISO exposure/speed rating
+* `LightSource`
+ Type of lightsource for white balance
+ - 0 undefined
+ - 1 daylight
+ - 2 fluorescent
+ - 3 tungsten / incandescent
+ - 4 flash
+ - 9 fine weather
+ - 10 cloudy weather
+ - 11 shade
+ - 12 daylight fluorescent 5700-7100K
+ - 13 day white fluorescent 4600-5400K
+ - 14 cool white fluorescent 3900-4500K
+ - 15 white fluorescent 3200-3700K
+ - 17 standard light A
+ - 18 standard light B
+ - 19 standard light C
+ - 20 D55
+ - 21 D65
+ - 22 D75
+ - 23 D50
+ - 24 ISO studio tungsten
+ - 255 other
+* `MeteringMode`
+ exposure metering mode
+ - 0 undefined
+ - 1 average
+ - 2 center weighted average
+ - 3 spot
+ - 4 multispot
+ - 5 pattern
+ - 6 partial
+ - 255 other
+* `WhiteBalance`
+ White balance
+ - 0 auto
+ - 1 manual
+* `SceneCaptureType`
+ Scene Mode
+ - 0 standard
+ - 1 landscape
+ - 2 portrait
+ - 3 night scene
+* `Contrast` Contrast Processing
+ - 0 normal
+ - 1 soft
+ - 2 hard
+* `Sharpness`
+ Sharpness Processing
+ - 0 normal
+ - 1 soft
+ - 2 hard
+* `SubjectDistance`
+ Distance in meters
+* `SubjectDistanceRange`
+ Distance Type
+ - 0 unknown
+ - 1 macro
+ - 2 close
+ - 3 distant
+* `Software`
+ Application and version used to generate the image
+* `Copyright`
+ copyright information
diff --git a/model/image.go b/model/image.go
index 79c204a..b43c7fd 100644
--- a/model/image.go
+++ b/model/image.go
@@ -8,16 +8,17 @@ import (
)
type Image struct {
- Id string `json:"id" db:"id"`
- Owner string `json:"owner" db:"owner"`
- Title string `json:"title" db:"title"`
- Description string `json:"description" db:"description"`
- CreatedAt time.Time `json:"created_at" db:"created_at"`
- UpdatedAt time.Time `json:"updated_at" db:"updated_at"`
- OriginalName string `json:"original_name" db:"original_name"`
- MimeType string `json:"mime_type" db:"type"`
- State string `json:"state" db:"state"`
- Url string `json:"url"`
+ Id string `json:"id" db:"id"`
+ Owner string `json:"owner" db:"owner"`
+ Title string `json:"title" db:"title"`
+ Description string `json:"description" db:"description"`
+ CreatedAt time.Time `json:"created_at" db:"created_at"`
+ UpdatedAt time.Time `json:"updated_at" db:"updated_at"`
+ OriginalName string `json:"original_name" db:"original_name"`
+ MimeType string `json:"mime_type" db:"type"`
+ State string `json:"state" db:"state"`
+ Metadata map[string]string `json:"metadata,omitempty"`
+ Url string `json:"url"`
}
func (image Image) VerifyOwner(user User) error {
diff --git a/task/image_resize_processor.go b/task/image_resize_processor.go
index 414478e..5152443 100644
--- a/task/image_resize_processor.go
+++ b/task/image_resize_processor.go
@@ -75,12 +75,43 @@ func (processor *ImageProcessor) ProcessTask(ctx context.Context, task *asynq.Ta
return
}
+ supportedMetadata := map[string]bool{
+ "Make": true,
+ "Model": true,
+ "DateTime": true,
+ "DateTimeDigitized": true,
+ "DateTimeOriginal": true,
+ "DigitalZoomRatio": true,
+ "ExposureBiasValue": true,
+ "ExposureMode": true,
+ "ExposureProgram": true,
+ "ExposureTime": true,
+ "FNumber": true,
+ "Flash": true,
+ "FlashEnergy": true,
+ "FocalLength": true,
+ "FocalLengthIn35mmFilm": true,
+ "ISOSpeedRatings": true,
+ "LightSource": true,
+ "MeteringMode": true,
+ "WhiteBalance": true,
+ "Contrast": true,
+ "Sharpness": true,
+ "SubjectDistance": true,
+ "SubjectDistanceRange": true,
+ "Software": true,
+ "Copyright": true,
+ }
metadata := make(map[string]string)
for _, key := range wand.GetImageProperties("exif:*") {
if strings.HasPrefix(key, "exif:thumbnail:") {
continue
}
- metadata[strings.TrimPrefix(key, "exif:")] = wand.GetImageProperty(key)
+ trimmedKey := strings.TrimPrefix(key, "exif:")
+ if !supportedMetadata[trimmedKey] {
+ continue
+ }
+ metadata[trimmedKey] = wand.GetImageProperty(key)
}
err = processor.env.Repositories.ImageMetadata.Update(payload.ImageId, metadata)
if err != nil {
diff --git a/ui/src/api/model/Image.ts b/ui/src/api/model/Image.ts
index e944e64..16683c3 100644
--- a/ui/src/api/model/Image.ts
+++ b/ui/src/api/model/Image.ts
@@ -8,5 +8,8 @@ export interface Image {
original_name: string,
mime_type: string,
state: string,
+ metadata: {
+ [key: string]: string
+ },
url: string,
}
diff --git a/ui/src/components/ImageView.tsx b/ui/src/components/ImageView.tsx
index e6e62e6..9d57bc6 100644
--- a/ui/src/components/ImageView.tsx
+++ b/ui/src/components/ImageView.tsx
@@ -1,7 +1,18 @@
import {Image} from "../api/model/Image";
-import React, {useState} from "react";
+import React, {useMemo, useState} from "react";
import {useUpdateImage} from "../api/useUpdateImage";
import {useDeleteImage} from "../api/useDeleteImage";
+import {parseMetadata, ratioToTime} from "../metadata/ImageMetadata";
+import {ratioToFloat} from "../metadata/Ratio";
+import {ExposureMode} from "../metadata/ExposureMode";
+import {ExposureProgram} from "../metadata/ExposureProgram";
+import {LightSource} from "../metadata/LightSource";
+import {MeteringMode} from "../metadata/MeteringMode";
+import {WhiteBalance} from "../metadata/WhiteBalance";
+import {SceneMode} from "../metadata/SceneMode";
+import {ContrastProcessing} from "../metadata/ContrastProcessing";
+import {SharpnessProcessing} from "../metadata/SharpnessProcessing";
+import {SubjectDistanceRange} from "../metadata/SubjectDistanceRange";
export interface ImageProps {
image: Image
@@ -13,6 +24,10 @@ export default function ImageView({image}: ImageProps) {
const [title, setTitle] = useState<string>(image.title);
const [description, setDescription] = useState<string>(image.description);
+ const metadata = useMemo(() =>
+ parseMetadata(image.metadata),
+ [image]);
+
return (
<div>
<p>UpdateError: {JSON.stringify(updateError, null, 2)}</p>
@@ -45,6 +60,40 @@ export default function ImageView({image}: ImageProps) {
<p>{image.created_at}</p>
<p>{image.updated_at}</p>
<p>{image.state}</p>
+ <h3>Metadata</h3>
+ <p><b>Make</b>: {metadata.make}</p>
+ <p><b>Model</b>: {metadata.model}</p>
+ <p><b>Software</b>: {metadata.software}</p>
+ <p><b>Copyright</b>: {metadata.copyright}</p>
+ <p><b>DateTime Created</b>: {metadata.dateTimeCreated?.toISOString()}</p>
+ <p><b>DateTime Digitized</b>: {metadata.dateTimeDigitized?.toISOString()}</p>
+ <p><b>DateTime Original</b>: {metadata.dateTimeOriginal?.toISOString()}</p>
+ <p><b>Digital Zoom</b>: {ratioToFloat(metadata.digitalZoomRatio)}</p>
+ <p><b>Exposure</b>: {ratioToFloat(metadata.exposure)}</p>
+ <p><b>Exposure Mode</b>: {metadata.exposureMode !== undefined ?
+ ExposureMode[metadata.exposureMode] : "null"}</p>
+ <p><b>Exposure Program</b>: {metadata.exposureProgram !== undefined ?
+ ExposureProgram[metadata.exposureProgram] : "null"}</p>
+ <p><b>Exposure Time</b>: {ratioToTime(metadata.exposureTime)}</p>
+ <p><b>Aperture</b>: {ratioToFloat(metadata.aperture)}</p>
+ <p><b>Focal Length</b>: {ratioToFloat(metadata.focalLength)}</p>
+ <p><b>Focal Length (35mm equivalent)</b>: {ratioToFloat(metadata.focalLength35mm)}</p>
+ <p><b>ISO</b>: {metadata.isoSpeedRating}</p>
+ <p><b>Light source</b>: {metadata.lightSource !== undefined ?
+ LightSource[metadata.lightSource] : "null"}</p>
+ <p><b>Metering mode</b>: {metadata.meteringMode !== undefined ?
+ MeteringMode[metadata.meteringMode] : "null"}</p>
+ <p><b>White balance</b>: {metadata.whiteBalance !== undefined ?
+ WhiteBalance[metadata.whiteBalance] : "null"}</p>
+ <p><b>Scene Mode</b>: {metadata.sceneMode !== undefined ?
+ SceneMode[metadata.sceneMode] : "null"}</p>
+ <p><b>Contrast Processing</b>: {metadata.contrast !== undefined ?
+ ContrastProcessing[metadata.contrast] : "null"}</p>
+ <p><b>Sharpness Processing</b>: {metadata.sharpness !== undefined ?
+ SharpnessProcessing[metadata.sharpness] : "null"}</p>
+ <p><b>Subject Distance</b>: {metadata.subjectDistance}</p>
+ <p><b>Subject Distance Range</b>: {metadata.subjectDistanceRange !== undefined ?
+ SubjectDistanceRange[metadata.subjectDistanceRange] : "null"}</p>
<img src={image.url + "t"} alt=""/>
<br/>
<input
diff --git a/ui/src/metadata/ContrastProcessing.ts b/ui/src/metadata/ContrastProcessing.ts
new file mode 100644
index 0000000..91405fb
--- /dev/null
+++ b/ui/src/metadata/ContrastProcessing.ts
@@ -0,0 +1,5 @@
+export enum ContrastProcessing {
+ NORMAL = 0,
+ SOFT = 1,
+ HARD = 2,
+}
diff --git a/ui/src/metadata/ExposureMode.ts b/ui/src/metadata/ExposureMode.ts
new file mode 100644
index 0000000..2518b99
--- /dev/null
+++ b/ui/src/metadata/ExposureMode.ts
@@ -0,0 +1,5 @@
+export enum ExposureMode {
+ AUTO = 0,
+ MANUAL = 1,
+ BRACKET = 2,
+}
diff --git a/ui/src/metadata/ExposureProgram.ts b/ui/src/metadata/ExposureProgram.ts
new file mode 100644
index 0000000..c056927
--- /dev/null
+++ b/ui/src/metadata/ExposureProgram.ts
@@ -0,0 +1,10 @@
+export enum ExposureProgram {
+ MANUAL = 1,
+ NORMAL = 2,
+ APERTURE_PRIORITY = 3,
+ SHUTTER_PRIORITY = 4,
+ CREATIVE = 5,
+ ACTION = 6,
+ PORTRAIT = 7,
+ LANDSCAPE = 8,
+}
diff --git a/ui/src/metadata/Flash.ts b/ui/src/metadata/Flash.ts
new file mode 100644
index 0000000..2a96677
--- /dev/null
+++ b/ui/src/metadata/Flash.ts
@@ -0,0 +1,12 @@
+import {FlashMode} from "./FlashMode";
+
+export interface Flash {
+ available: boolean,
+ fired: boolean,
+ strobeDetection: {
+ available: boolean,
+ detected: boolean,
+ },
+ mode: FlashMode | null,
+ redEyeReduction: boolean,
+}
diff --git a/ui/src/metadata/FlashMode.ts b/ui/src/metadata/FlashMode.ts
new file mode 100644
index 0000000..02f7379
--- /dev/null
+++ b/ui/src/metadata/FlashMode.ts
@@ -0,0 +1,5 @@
+export enum FlashMode {
+ ALWAYS_ON = 1,
+ ALWAYS_OFF = 2,
+ AUTO = 3
+}
diff --git a/ui/src/metadata/ImageMetadata.ts b/ui/src/metadata/ImageMetadata.ts
new file mode 100644
index 0000000..12ff5d2
--- /dev/null
+++ b/ui/src/metadata/ImageMetadata.ts
@@ -0,0 +1,204 @@
+import {parseRatio, Ratio} from "./Ratio";
+import {Flash} from "./Flash";
+import {ExposureMode} from "./ExposureMode";
+import {ExposureProgram} from "./ExposureProgram";
+import {LightSource} from "./LightSource";
+import {MeteringMode} from "./MeteringMode";
+import {WhiteBalance} from "./WhiteBalance";
+import {SceneMode} from "./SceneMode";
+import {ContrastProcessing} from "./ContrastProcessing";
+import {SharpnessProcessing} from "./SharpnessProcessing";
+import {SubjectDistanceRange} from "./SubjectDistanceRange";
+
+export interface ImageMetadata {
+ make?: string,
+ model?: string,
+ software?: string,
+ copyright?: string,
+ dateTimeCreated?: Date,
+ dateTimeDigitized?: Date,
+ dateTimeOriginal?: Date,
+ digitalZoomRatio?: Ratio,
+ exposure?: Ratio,
+ exposureMode?: ExposureMode,
+ exposureProgram?: ExposureProgram,
+ exposureTime?: Ratio,
+ aperture?: Ratio,
+ flash?: Flash,
+ focalLength?: Ratio,
+ focalLength35mm?: Ratio,
+ isoSpeedRating?: number,
+ lightSource?: LightSource,
+ meteringMode?: MeteringMode,
+ whiteBalance?: WhiteBalance,
+ sceneMode?: SceneMode,
+ contrast?: ContrastProcessing,
+ sharpness?: SharpnessProcessing,
+ subjectDistance?: number,
+ subjectDistanceRange?: SubjectDistanceRange,
+}
+
+export function parseMetadata(metadata: { [key: string]: string }): ImageMetadata {
+ return {
+ make: metadata["Make"],
+ model: metadata["Model"],
+ software: metadata["Software"],
+ copyright: metadata["Copyright"],
+ dateTimeCreated: parseDate(metadata["DateTime"]),
+ dateTimeDigitized: parseDate(metadata["DateTimeDigitized"]),
+ dateTimeOriginal: parseDate(metadata["DateTimeOriginal"]),
+ digitalZoomRatio: parseRatio(metadata["DigitalZoomRatio"]),
+ exposure: parseRatio(metadata["ExposureBiasValue"]),
+ exposureMode: parseExposureMode(metadata["ExposureMode"]),
+ exposureProgram: parseExposureProgram(metadata["ExposureProgram"]),
+ exposureTime: parseRatio(metadata["ExposureTime"]),
+ aperture: parseRatio(metadata["FNumber"]),
+ flash: undefined,
+ focalLength: parseRatio(metadata["FocalLength"]),
+ focalLength35mm: parseRatio(metadata["FocalLengthIn35mmFilm"]),
+ isoSpeedRating: parseNumber(metadata["ISOSpeedRatings"]),
+ lightSource: parseLightSource(metadata["LightSource"]),
+ meteringMode: parseMeteringMode(metadata["MeteringMode"]),
+ whiteBalance: parseWhiteBalance(metadata["WhiteBalance"]),
+ sceneMode: parseSceneMode(metadata["SceneMode"]),
+ contrast: parseContrastProcessing(metadata["Contrast"]),
+ sharpness: parseSharpnessProcessing(metadata["Sharpness"]),
+ subjectDistance: parseNumber(metadata["SubjectDistance"]),
+ subjectDistanceRange: parseSubjectDistanceRange(metadata["SubjectDistanceRange"]),
+ }
+}
+
+export function parseDate(value: string): Date | undefined {
+ const split = value.split(" ");
+ if (split.length !== 2) {
+ return undefined;
+ }
+ const [date, time] = split;
+ try {
+ const parsed = new Date(
+ date.replaceAll(":", "-") + " " + time
+ );
+ parsed.toISOString();
+ return parsed;
+ } catch (e) {
+ return undefined;
+ }
+}
+
+export function parseNumber(value: string): number | undefined {
+ const number = parseInt(value);
+ if (isNaN(number) || number === Infinity || number === -Infinity) {
+ return undefined;
+ }
+ return number;
+}
+
+export function parseExposureMode(value: string): ExposureMode | undefined {
+ const numericValue = parseNumber(value)
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(ExposureMode)) {
+ return numericValue as ExposureMode;
+ }
+ return undefined;
+}
+
+export function parseExposureProgram(value: string): ExposureProgram | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(ExposureProgram)) {
+ return numericValue as ExposureProgram;
+ }
+ return undefined;
+}
+
+export function parseLightSource(value: string): LightSource | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(LightSource)) {
+ return numericValue as LightSource;
+ }
+ return undefined;
+}
+
+export function parseMeteringMode(value: string): MeteringMode | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(MeteringMode)) {
+ return numericValue as MeteringMode;
+ }
+ return undefined;
+}
+
+export function parseWhiteBalance(value: string): WhiteBalance | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(WhiteBalance)) {
+ return numericValue as WhiteBalance;
+ }
+ return undefined;
+}
+
+export function parseSceneMode(value: string): SceneMode | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(SceneMode)) {
+ return numericValue as SceneMode;
+ }
+ return undefined;
+}
+
+export function parseContrastProcessing(value: string): ContrastProcessing | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(ContrastProcessing)) {
+ return numericValue as ContrastProcessing;
+ }
+ return undefined;
+}
+
+export function parseSharpnessProcessing(value: string): SharpnessProcessing | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(SharpnessProcessing)) {
+ return numericValue as SharpnessProcessing;
+ }
+ return undefined;
+}
+
+export function parseSubjectDistanceRange(value: string): SubjectDistanceRange | undefined {
+ const numericValue = parseNumber(value);
+ if (numericValue === undefined) {
+ return undefined;
+ }
+ if (numericValue in Object.values(SubjectDistanceRange)) {
+ return numericValue as SubjectDistanceRange;
+ }
+ return undefined;
+}
+
+export function ratioToTime(value: Ratio | undefined): string | undefined {
+ if (value === undefined) {
+ return undefined;
+ }
+ if (value.numerator > value.denominator) {
+ return (value.numerator / value.denominator).toFixed(0) + "s";
+ } else {
+ return "1/" + (value.denominator / value.numerator) + "s";
+ }
+}
diff --git a/ui/src/metadata/LightSource.ts b/ui/src/metadata/LightSource.ts
new file mode 100644
index 0000000..46d3c65
--- /dev/null
+++ b/ui/src/metadata/LightSource.ts
@@ -0,0 +1,21 @@
+export enum LightSource {
+ DAYLIGHT = 1,
+ FLUORESCENT = 2,
+ INCANDESCENT = 3,
+ FLASH = 4,
+ FINE_WEATHER = 9,
+ CLOUDY_WEATHER = 10,
+ SHADE = 11,
+ FLUORESCENT_6400K = 12,
+ FLUORESCENT_5000K = 13,
+ FLUORESCENT_4200K = 14,
+ FLUORESCENT_3450K = 15,
+ STANDARD_LIGHT_A = 17,
+ STANDARD_LIGHT_B = 18,
+ STANDARD_LIGHT_C = 10,
+ D55 = 20,
+ D65 = 21,
+ D75 = 22,
+ D50 = 23,
+ ISO_STUDIO_INCANDESCENT = 24,
+}
diff --git a/ui/src/metadata/MeteringMode.ts b/ui/src/metadata/MeteringMode.ts
new file mode 100644
index 0000000..38572e8
--- /dev/null
+++ b/ui/src/metadata/MeteringMode.ts
@@ -0,0 +1,8 @@
+export enum MeteringMode {
+ AVERAGE = 1,
+ CENTER_WEIGHTED_AVERAGE = 2,
+ SPOT = 3,
+ MULTI_SPOT = 4,
+ PATTERN = 5,
+ PARTIAL = 6,
+}
diff --git a/ui/src/metadata/Ratio.ts b/ui/src/metadata/Ratio.ts
new file mode 100644
index 0000000..f5a3c5e
--- /dev/null
+++ b/ui/src/metadata/Ratio.ts
@@ -0,0 +1,33 @@
+export interface Ratio {
+ numerator: number,
+ denominator: number
+}
+
+export function parseRatio(value: string): Ratio | undefined {
+ const splitValues = value.split("/");
+ if (splitValues.length < 1) {
+ return undefined;
+ }
+ const numerator = parseInt(splitValues[0]);
+ if (isNaN(numerator)) {
+ return undefined;
+ }
+ let denominator;
+ if (splitValues.length === 1) {
+ denominator = 1;
+ } else {
+ denominator = parseInt(splitValues[1]);
+ if (isNaN(denominator) || denominator === 0) {
+ return undefined;
+ }
+ }
+
+ return {numerator, denominator};
+}
+
+export function ratioToFloat(ratio: Ratio | undefined): number | undefined {
+ if (ratio === undefined) {
+ return undefined;
+ }
+ return ratio.numerator / ratio.denominator;
+}
diff --git a/ui/src/metadata/SceneMode.ts b/ui/src/metadata/SceneMode.ts
new file mode 100644
index 0000000..9c04599
--- /dev/null
+++ b/ui/src/metadata/SceneMode.ts
@@ -0,0 +1,6 @@
+export enum SceneMode {
+ STANDARD = 0,
+ LANDSCAPE = 1,
+ PORTRAIT = 2,
+ NIGHT_SCENE = 3,
+}
diff --git a/ui/src/metadata/SharpnessProcessing.ts b/ui/src/metadata/SharpnessProcessing.ts
new file mode 100644
index 0000000..f8d0a5f
--- /dev/null
+++ b/ui/src/metadata/SharpnessProcessing.ts
@@ -0,0 +1,5 @@
+export enum SharpnessProcessing {
+ NORMAL = 0,
+ SOFT = 1,
+ HARD = 2,
+}
diff --git a/ui/src/metadata/SubjectDistanceRange.ts b/ui/src/metadata/SubjectDistanceRange.ts
new file mode 100644
index 0000000..f28a4b7
--- /dev/null
+++ b/ui/src/metadata/SubjectDistanceRange.ts
@@ -0,0 +1,5 @@
+export enum SubjectDistanceRange {
+ MACRO = 1,
+ CLOSE = 2,
+ DISTANT = 3,
+}
diff --git a/ui/src/metadata/WhiteBalance.ts b/ui/src/metadata/WhiteBalance.ts
new file mode 100644
index 0000000..7b13f42
--- /dev/null
+++ b/ui/src/metadata/WhiteBalance.ts
@@ -0,0 +1,4 @@
+export enum WhiteBalance {
+ AUTO = 0,
+ MANUAL = 1,
+}
--
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