Android/frameworks_base
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Write timestamp information into screenshots.

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Now that ExifInterface has support for writing metadata into PNG
files, write the timestamp when a screenshot was taken.  This
includes the base time, fractional seconds, and timezone offset.

Bug: 140247628, 138155848
Test: manual
Change-Id: Ibdc7464e75ee5ea1483d529e6943f4e997323e03
This commit is contained in:
Jeff Sharkey
2019-11-13 15:12:48 -07:00
parent 8a505cde0a
commit 2d9d80aaaa
1 changed files with 39 additions and 0 deletions
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39
packages/SystemUI/src/com/android/systemui/screenshot/GlobalScreenshot.java
View File

@@ -59,13 +59,16 @@ import android.graphics.Picture;
import android.graphics.PixelFormat;
import android.graphics.PointF;
import android.graphics.Rect;
import android.media.ExifInterface;
import android.media.MediaActionSound;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Environment;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.PowerManager;
import android.os.Process;
import android.os.RemoteException;
@@ -107,9 +110,15 @@ import java.io.IOException;
import java.io.OutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
@@ -323,11 +332,41 @@ public class GlobalScreenshot {
final Uri uri = MediaStore.createPending(context, params);
final MediaStore.PendingSession session = MediaStore.openPending(context, uri);
try {
// First, write the actual data for our screenshot
try (OutputStream out = session.openOutputStream()) {
if (!image.compress(Bitmap.CompressFormat.PNG, 100, out)) {
throw new IOException("Failed to compress");
}
}
// Next, write metadata to help index the screenshot
try (ParcelFileDescriptor pfd = session.open()) {
final ExifInterface exif = new ExifInterface(pfd.getFileDescriptor());
exif.setAttribute(ExifInterface.TAG_SOFTWARE,
"Android " + Build.DISPLAY);
exif.setAttribute(ExifInterface.TAG_IMAGE_WIDTH,
Integer.toString(image.getWidth()));
exif.setAttribute(ExifInterface.TAG_IMAGE_LENGTH,
Integer.toString(image.getHeight()));
final ZonedDateTime time = ZonedDateTime.ofInstant(
Instant.ofEpochMilli(mImageTime), ZoneId.systemDefault());
exif.setAttribute(ExifInterface.TAG_DATETIME_ORIGINAL,
DateTimeFormatter.ofPattern("yyyy:MM:dd HH:mm:ss").format(time));
exif.setAttribute(ExifInterface.TAG_SUBSEC_TIME_ORIGINAL,
DateTimeFormatter.ofPattern("SSS").format(time));
if (Objects.equals(time.getOffset(), ZoneOffset.UTC)) {
exif.setAttribute(ExifInterface.TAG_OFFSET_TIME_ORIGINAL, "+00:00");
} else {
exif.setAttribute(ExifInterface.TAG_OFFSET_TIME_ORIGINAL,
DateTimeFormatter.ofPattern("XXX").format(time));
}
exif.saveAttributes();
}
session.publish();
} catch (Exception e) {
session.abandon();