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catalog: get tags from IPTC as fallback from XMP

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Thibault Deckers 2020-12-02 11:38:39 +09:00
parent 4f7287de02
commit 24a20d10da
2 changed files with 13 additions and 5 deletions
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14
android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/MetadataHandler.kt
View file

@ -17,6 +17,7 @@ import com.drew.metadata.exif.ExifSubIFDDirectory
import com.drew.metadata.exif.GpsDirectory
import com.drew.metadata.file.FileTypeDirectory
import com.drew.metadata.gif.GifAnimationDirectory
import com.drew.metadata.iptc.IptcDirectory
import com.drew.metadata.webp.WebpDirectory
import com.drew.metadata.xmp.XmpDirectory
import deckers.thibault.aves.metadata.ExifInterfaceHelper.describeAll
@ -203,6 +204,9 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
// set `KEY_XMP_TITLE_DESCRIPTION` from these fields (by precedence):
// - XMP / dc:title
// - XMP / dc:description
// set `KEY_XMP_SUBJECTS` from these fields (by precedence):
// - XMP / dc:subject
// - IPTC / keywords
private fun getCatalogMetadataByMetadataExtractor(uri: Uri, mimeType: String, path: String?, sizeBytes: Long?): Map<String, Any> {
val metadataMap = HashMap<String, Any>()
@ -267,7 +271,7 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
if (xmpMeta.doesPropertyExist(XMP.DC_SCHEMA_NS, XMP.SUBJECT_PROP_NAME)) {
val count = xmpMeta.countArrayItems(XMP.DC_SCHEMA_NS, XMP.SUBJECT_PROP_NAME)
val values = (1 until count + 1).map { xmpMeta.getArrayItem(XMP.DC_SCHEMA_NS, XMP.SUBJECT_PROP_NAME, it).value }
metadataMap[KEY_XMP_SUBJECTS] = values.joinToString(separator = ";")
metadataMap[KEY_XMP_SUBJECTS] = values.joinToString(separator = XMP_SUBJECTS_SEPARATOR)
}
xmpMeta.getSafeLocalizedText(XMP.DC_SCHEMA_NS, XMP.TITLE_PROP_NAME) { metadataMap[KEY_XMP_TITLE_DESCRIPTION] = it }
if (!metadataMap.containsKey(KEY_XMP_TITLE_DESCRIPTION)) {
@ -281,6 +285,13 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
}
}
// XMP fallback to IPTC
if (!metadataMap.containsKey(KEY_XMP_SUBJECTS)) {
for (dir in metadata.getDirectoriesOfType(IptcDirectory::class.java)) {
dir.keywords?.let { metadataMap[KEY_XMP_SUBJECTS] = it.joinToString(separator = XMP_SUBJECTS_SEPARATOR) }
}
}
// identification of animated GIF & WEBP, GeoTIFF
when (mimeType) {
MimeTypes.GIF -> {
@ -541,6 +552,7 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
private const val MASK_IS_ANIMATED = 1 shl 0
private const val MASK_IS_FLIPPED = 1 shl 1
private const val MASK_IS_GEOTIFF = 1 shl 2
private const val XMP_SUBJECTS_SEPARATOR = ";"
// overlay metadata
private const val KEY_APERTURE = "aperture"

4
lib/services/android_debug_service.dart
View file

@ -1,8 +1,4 @@
import 'dart:typed_data';
import 'package:aves/model/image_entry.dart';
import 'package:aves/model/image_metadata.dart';
import 'package:aves/services/service_policy.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';