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author | Michael Kolb <kolby@google.com> | 2013-01-29 10:33:22 -0800 |
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committer | Michael Kolb <kolby@google.com> | 2013-01-29 10:51:20 -0800 |
commit | 8872c23e739de38d74f04a8c852ebb5199c905f6 (patch) | |
tree | 63e6ca8d492217f647ae87527e0039e5a0da2c97 /src/com/android/camera/Exif.java | |
parent | c58d88b469fd345df9bdbff0c147d91caa9959b5 (diff) | |
download | android_packages_apps_Snap-8872c23e739de38d74f04a8c852ebb5199c905f6.tar.gz android_packages_apps_Snap-8872c23e739de38d74f04a8c852ebb5199c905f6.tar.bz2 android_packages_apps_Snap-8872c23e739de38d74f04a8c852ebb5199c905f6.zip |
Move Camera Java/Native source into Gallery2
Change-Id: I968efe4d656e88a7760d3c0044f65b4adac2ddd1
Diffstat (limited to 'src/com/android/camera/Exif.java')
-rw-r--r-- | src/com/android/camera/Exif.java | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/com/android/camera/Exif.java b/src/com/android/camera/Exif.java new file mode 100644 index 000000000..605556599 --- /dev/null +++ b/src/com/android/camera/Exif.java @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2010 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; + +import android.util.Log; + +import com.android.gallery3d.exif.ExifInvalidFormatException; +import com.android.gallery3d.exif.ExifParser; +import com.android.gallery3d.exif.ExifTag; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.InputStream; + +public class Exif { + private static final String TAG = "CameraExif"; + + // Returns the degrees in clockwise. Values are 0, 90, 180, or 270. + public static int getOrientation(byte[] jpeg) { + if (jpeg == null) return 0; + + InputStream is = new ByteArrayInputStream(jpeg); + + try { + ExifParser parser = ExifParser.parse(is, ExifParser.OPTION_IFD_0); + int event = parser.next(); + while(event != ExifParser.EVENT_END) { + if (event == ExifParser.EVENT_NEW_TAG) { + ExifTag tag = parser.getTag(); + if (tag.getTagId() == ExifTag.TAG_ORIENTATION && + tag.hasValue()) { + int orient = (int) tag.getValueAt(0); + switch (orient) { + case ExifTag.Orientation.TOP_LEFT: + return 0; + case ExifTag.Orientation.BOTTOM_LEFT: + return 180; + case ExifTag.Orientation.RIGHT_TOP: + return 90; + case ExifTag.Orientation.RIGHT_BOTTOM: + return 270; + default: + Log.i(TAG, "Unsupported orientation"); + return 0; + } + } + } + event = parser.next(); + } + Log.i(TAG, "Orientation not found"); + return 0; + } catch (IOException e) { + Log.w(TAG, "Failed to read EXIF orientation", e); + return 0; + } catch (ExifInvalidFormatException e) { + Log.w(TAG, "Failed to read EXIF orientation", e); + return 0; + } + } +} |