Examples with ExifInterface android.media.ExifInterface used on opensource projects

Example 26 with ExifInterface

use of android.media.ExifInterface in project apps-android-commons by commons-app.

the class GPSExtractor method getCoords.

/**
     * Extracts geolocation (either of image from EXIF data, or of user)
     * @param useGPS set to true if location permissions allowed (by API 23), false if disallowed
     * @return coordinates as string (needs to be passed as a String in API query)
     */
@Nullable
public String getCoords(boolean useGPS) {
    ExifInterface exif;
    String latitude = "";
    String longitude = "";
    String latitude_ref = "";
    String longitude_ref = "";
    String decimalCoords = "";
    try {
        exif = new ExifInterface(filePath);
    } catch (IOException e) {
        Timber.w(e);
        return null;
    } catch (IllegalArgumentException e) {
        Timber.w(e);
        return null;
    }
    //If image has no EXIF data and user has enabled GPS setting, get user's location
    if (exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE) == null && useGPS) {
        registerLocationManager();
        imageCoordsExists = false;
        Timber.d("EXIF data has no location info");
        //Check what user's preference is for automatic location detection
        boolean gpsPrefEnabled = gpsPreferenceEnabled();
        //Check that currentLatitude and currentLongitude have been explicitly set by MyLocationListener and do not default to (0.0,0.0)
        if (gpsPrefEnabled && currentLatitude != null && currentLongitude != null) {
            Timber.d("Current location values: Lat = %f Long = %f", currentLatitude, currentLongitude);
            return String.valueOf(currentLatitude) + "|" + String.valueOf(currentLongitude);
        } else {
            // No coords found
            return null;
        }
    } else if (exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE) == null) {
        return null;
    } else {
        //If image has EXIF data, extract image coords
        imageCoordsExists = true;
        Timber.d("EXIF data has location info");
        latitude = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE);
        latitude_ref = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE_REF);
        longitude = exif.getAttribute(ExifInterface.TAG_GPS_LONGITUDE);
        longitude_ref = exif.getAttribute(ExifInterface.TAG_GPS_LONGITUDE_REF);
        if (latitude != null && latitude_ref != null && longitude != null && longitude_ref != null) {
            Timber.d("Latitude: %s %s", latitude, latitude_ref);
            Timber.d("Longitude: %s %s", longitude, longitude_ref);
            decimalCoords = getDecimalCoords(latitude, latitude_ref, longitude, longitude_ref);
            return decimalCoords;
        } else {
            return null;
        }
    }
}

Example 27 with ExifInterface

use of android.media.ExifInterface in project android_frameworks_base by DirtyUnicorns.

the class ExifInterfaceTest method testSaveAttributes_withFileName.

private void testSaveAttributes_withFileName(File imageFile, ExpectedValue expectedValue) throws IOException {
    String verboseTag = imageFile.getName();
    ExifInterface exifInterface = new ExifInterface(imageFile.getAbsolutePath());
    exifInterface.saveAttributes();
    exifInterface = new ExifInterface(imageFile.getAbsolutePath());
    compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    // Test for modifying one attribute.
    String backupValue = exifInterface.getAttribute(ExifInterface.TAG_MAKE);
    exifInterface.setAttribute(ExifInterface.TAG_MAKE, "abc");
    exifInterface.saveAttributes();
    exifInterface = new ExifInterface(imageFile.getAbsolutePath());
    assertEquals("abc", exifInterface.getAttribute(ExifInterface.TAG_MAKE));
    // Restore the backup value.
    exifInterface.setAttribute(ExifInterface.TAG_MAKE, backupValue);
    exifInterface.saveAttributes();
    exifInterface = new ExifInterface(imageFile.getAbsolutePath());
    compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
}

Example 28 with ExifInterface

use of android.media.ExifInterface in project android_frameworks_base by DirtyUnicorns.

the class ExifInterfaceTest method testSaveAttributes_withFileDescriptor.

private void testSaveAttributes_withFileDescriptor(File imageFile, ExpectedValue expectedValue) throws IOException {
    String verboseTag = imageFile.getName();
    FileDescriptor fd = null;
    try {
        fd = Os.open(imageFile.getAbsolutePath(), OsConstants.O_RDWR, 0600);
        ExifInterface exifInterface = new ExifInterface(fd);
        exifInterface.saveAttributes();
        Os.lseek(fd, 0, OsConstants.SEEK_SET);
        exifInterface = new ExifInterface(fd);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
        // Test for modifying one attribute.
        String backupValue = exifInterface.getAttribute(ExifInterface.TAG_MAKE);
        exifInterface.setAttribute(ExifInterface.TAG_MAKE, "abc");
        exifInterface.saveAttributes();
        Os.lseek(fd, 0, OsConstants.SEEK_SET);
        exifInterface = new ExifInterface(fd);
        assertEquals("abc", exifInterface.getAttribute(ExifInterface.TAG_MAKE));
        // Restore the backup value.
        exifInterface.setAttribute(ExifInterface.TAG_MAKE, backupValue);
        exifInterface.saveAttributes();
        Os.lseek(fd, 0, OsConstants.SEEK_SET);
        exifInterface = new ExifInterface(fd);
        compareWithExpectedValue(exifInterface, expectedValue, verboseTag);
    } catch (ErrnoException e) {
        throw e.rethrowAsIOException();
    } finally {
        IoUtils.closeQuietly(fd);
    }
}

Example 29 with ExifInterface

use of android.media.ExifInterface in project android_frameworks_base by DirtyUnicorns.

the class DocumentsContract method openImageThumbnail.

/**
     * Open the given image for thumbnail purposes, using any embedded EXIF
     * thumbnail if available, and providing orientation hints from the parent
     * image.
     *
     * @hide
     */
public static AssetFileDescriptor openImageThumbnail(File file) throws FileNotFoundException {
    final ParcelFileDescriptor pfd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
    Bundle extras = null;
    try {
        final ExifInterface exif = new ExifInterface(file.getAbsolutePath());
        switch(exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1)) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 90);
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 180);
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 270);
                break;
        }
        final long[] thumb = exif.getThumbnailRange();
        if (thumb != null) {
            return new AssetFileDescriptor(pfd, thumb[0], thumb[1], extras);
        }
    } catch (IOException e) {
    }
    return new AssetFileDescriptor(pfd, 0, AssetFileDescriptor.UNKNOWN_LENGTH, extras);
}

Example 30 with ExifInterface

use of android.media.ExifInterface in project android_frameworks_base by AOSPA.

the class DocumentsContract method openImageThumbnail.

/**
     * Open the given image for thumbnail purposes, using any embedded EXIF
     * thumbnail if available, and providing orientation hints from the parent
     * image.
     *
     * @hide
     */
public static AssetFileDescriptor openImageThumbnail(File file) throws FileNotFoundException {
    final ParcelFileDescriptor pfd = ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
    Bundle extras = null;
    try {
        final ExifInterface exif = new ExifInterface(file.getAbsolutePath());
        switch(exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, -1)) {
            case ExifInterface.ORIENTATION_ROTATE_90:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 90);
                break;
            case ExifInterface.ORIENTATION_ROTATE_180:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 180);
                break;
            case ExifInterface.ORIENTATION_ROTATE_270:
                extras = new Bundle(1);
                extras.putInt(EXTRA_ORIENTATION, 270);
                break;
        }
        final long[] thumb = exif.getThumbnailRange();
        if (thumb != null) {
            return new AssetFileDescriptor(pfd, thumb[0], thumb[1], extras);
        }
    } catch (IOException e) {
    }
    return new AssetFileDescriptor(pfd, 0, AssetFileDescriptor.UNKNOWN_LENGTH, extras);
}