/*
|
* Copyright (C) 2013 The Android Open Source Project
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*/
|
|
package com.android.camera.data;
|
|
import android.content.Context;
|
import android.util.SparseIntArray;
|
|
import com.android.camera.debug.Log;
|
import com.android.camera.exif.ExifInterface;
|
import com.android.camera.exif.ExifTag;
|
import com.android.camera2.R;
|
|
import java.io.FileNotFoundException;
|
import java.io.IOException;
|
import java.util.Iterator;
|
import java.util.Map.Entry;
|
import java.util.TreeMap;
|
|
public class MediaDetails implements Iterable<Entry<Integer, Object>> {
|
@SuppressWarnings("unused")
|
private static final Log.Tag TAG = new Log.Tag("MediaDetails");
|
|
private TreeMap<Integer, Object> mDetails = new TreeMap<Integer, Object>();
|
private SparseIntArray mUnits = new SparseIntArray();
|
|
public static final int INDEX_TITLE = 1;
|
public static final int INDEX_DESCRIPTION = 2;
|
public static final int INDEX_DATETIME = 3;
|
public static final int INDEX_LOCATION = 4;
|
public static final int INDEX_WIDTH = 5;
|
public static final int INDEX_HEIGHT = 6;
|
public static final int INDEX_ORIENTATION = 7;
|
public static final int INDEX_DURATION = 8;
|
public static final int INDEX_MIMETYPE = 9;
|
public static final int INDEX_SIZE = 10;
|
|
// for EXIF
|
public static final int INDEX_MAKE = 100;
|
public static final int INDEX_MODEL = 101;
|
public static final int INDEX_FLASH = 102;
|
public static final int INDEX_FOCAL_LENGTH = 103;
|
public static final int INDEX_WHITE_BALANCE = 104;
|
public static final int INDEX_APERTURE = 105;
|
public static final int INDEX_SHUTTER_SPEED = 106;
|
public static final int INDEX_EXPOSURE_TIME = 107;
|
public static final int INDEX_ISO = 108;
|
|
// Put this last because it may be long.
|
public static final int INDEX_PATH = 200;
|
|
public static class FlashState {
|
private static int FLASH_FIRED_MASK = 1;
|
private static int FLASH_RETURN_MASK = 2 | 4;
|
private static int FLASH_MODE_MASK = 8 | 16;
|
private static int FLASH_FUNCTION_MASK = 32;
|
private static int FLASH_RED_EYE_MASK = 64;
|
private int mState;
|
|
public FlashState(int state) {
|
mState = state;
|
}
|
|
public boolean isFlashFired() {
|
return (mState & FLASH_FIRED_MASK) != 0;
|
}
|
}
|
|
public void addDetail(int index, Object value) {
|
mDetails.put(index, value);
|
}
|
|
public Object getDetail(int index) {
|
return mDetails.get(index);
|
}
|
|
public int size() {
|
return mDetails.size();
|
}
|
|
@Override
|
public Iterator<Entry<Integer, Object>> iterator() {
|
return mDetails.entrySet().iterator();
|
}
|
|
public void setUnit(int index, int unit) {
|
mUnits.put(index, unit);
|
}
|
|
public boolean hasUnit(int index) {
|
return mUnits.indexOfKey(index) >= 0;
|
}
|
|
public int getUnit(int index) {
|
return mUnits.get(index);
|
}
|
|
private static void setExifData(MediaDetails details, ExifTag tag,
|
int key) {
|
if (tag != null) {
|
String value = null;
|
int type = tag.getDataType();
|
if (type == ExifTag.TYPE_UNSIGNED_RATIONAL || type == ExifTag.TYPE_RATIONAL) {
|
value = String.valueOf(tag.getValueAsRational(0).toDouble());
|
} else if (type == ExifTag.TYPE_ASCII) {
|
value = tag.getValueAsString();
|
} else {
|
value = String.valueOf(tag.forceGetValueAsLong(0));
|
}
|
if (key == MediaDetails.INDEX_FLASH) {
|
MediaDetails.FlashState state = new MediaDetails.FlashState(
|
Integer.valueOf(value));
|
details.addDetail(key, state);
|
} else {
|
details.addDetail(key, value);
|
}
|
}
|
}
|
|
/**
|
* Extracts data from the EXIF of the given file and stores it in the
|
* MediaDetails instance.
|
*/
|
public static void extractExifInfo(MediaDetails details, String filePath) {
|
ExifInterface exif = new ExifInterface();
|
try {
|
exif.readExif(filePath);
|
} catch (FileNotFoundException e) {
|
Log.w(TAG, "Could not find file to read exif: " + filePath, e);
|
} catch (IOException e) {
|
Log.w(TAG, "Could not read exif from file: " + filePath, e);
|
}
|
|
setExifData(details, exif.getTag(ExifInterface.TAG_FLASH),
|
MediaDetails.INDEX_FLASH);
|
setExifData(details, exif.getTag(ExifInterface.TAG_IMAGE_WIDTH),
|
MediaDetails.INDEX_WIDTH);
|
setExifData(details, exif.getTag(ExifInterface.TAG_IMAGE_LENGTH),
|
MediaDetails.INDEX_HEIGHT);
|
setExifData(details, exif.getTag(ExifInterface.TAG_MAKE),
|
MediaDetails.INDEX_MAKE);
|
setExifData(details, exif.getTag(ExifInterface.TAG_MODEL),
|
MediaDetails.INDEX_MODEL);
|
setExifData(details, exif.getTag(ExifInterface.TAG_APERTURE_VALUE),
|
MediaDetails.INDEX_APERTURE);
|
setExifData(details, exif.getTag(ExifInterface.TAG_ISO_SPEED_RATINGS),
|
MediaDetails.INDEX_ISO);
|
setExifData(details, exif.getTag(ExifInterface.TAG_WHITE_BALANCE),
|
MediaDetails.INDEX_WHITE_BALANCE);
|
setExifData(details, exif.getTag(ExifInterface.TAG_EXPOSURE_TIME),
|
MediaDetails.INDEX_EXPOSURE_TIME);
|
ExifTag focalTag = exif.getTag(ExifInterface.TAG_FOCAL_LENGTH);
|
if (focalTag != null) {
|
details.addDetail(MediaDetails.INDEX_FOCAL_LENGTH,
|
focalTag.getValueAsRational(0).toDouble());
|
details.setUnit(MediaDetails.INDEX_FOCAL_LENGTH, R.string.unit_mm);
|
}
|
}
|
|
/**
|
* Returns a (localized) string for the given duration (in seconds).
|
*/
|
public static String formatDuration(final Context context, long seconds) {
|
long h = seconds / 3600;
|
long m = (seconds - h * 3600) / 60;
|
long s = seconds - (h * 3600 + m * 60);
|
String durationValue;
|
if (h == 0) {
|
durationValue = String.format(context.getString(R.string.details_ms), m, s);
|
} else {
|
durationValue = String.format(context.getString(R.string.details_hms), h, m, s);
|
}
|
return durationValue;
|
}
|
}
|
