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get location from videos

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Thibault Deckers 2019-10-05 22:52:00 +09:00
parent ce715c5866
commit 38b7bcd15f
1 changed files with 23 additions and 0 deletions
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23
android/app/src/main/java/deckers/thibault/aves/channelhandlers/MetadataHandler.java
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@ -28,6 +28,8 @@ import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.TimeZone;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import deckers.thibault.aves.utils.Constants;
import deckers.thibault.aves.utils.MetadataHelper;
@ -39,6 +41,7 @@ public class MetadataHandler implements MethodChannel.MethodCallHandler {
private static final String XMP_DC_SCHEMA_NS = "http://purl.org/dc/elements/1.1/";
private static final String XMP_SUBJECT_PROP_NAME = "dc:subject";
private static final Pattern videoLocationPattern = Pattern.compile("([+-][.0-9]+)([+-][.0-9]+)/?");
private Context context;
@ -197,6 +200,7 @@ public class MetadataHandler implements MethodChannel.MethodCallHandler {
retriever.setDataSource(path);
String dateString = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DATE);
String rotationString = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
String locationString = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_LOCATION);
retriever.release();
if (dateString != null) {
@ -209,6 +213,25 @@ public class MetadataHandler implements MethodChannel.MethodCallHandler {
if (rotationString != null) {
metadataMap.put("videoRotation", Integer.parseInt(rotationString));
}
if (locationString != null) {
Matcher locationMatcher = videoLocationPattern.matcher(locationString);
if (locationMatcher.find() && locationMatcher.groupCount() == 2) {
String latitudeString = locationMatcher.group(1);
String longitudeString = locationMatcher.group(2);
if (latitudeString != null && longitudeString != null) {
try {
double latitude = Double.parseDouble(latitudeString);
double longitude = Double.parseDouble(longitudeString);
if (latitude != 0 && longitude != 0) {
metadataMap.put("latitude", latitude);
metadataMap.put("longitude", longitude);
}
} catch (NumberFormatException ex) {
// ignore
}
}
}
}
} catch (Exception e) {
result.error("getCatalogMetadata-exception", "failed to get video metadata for path=" + path, e);
}