/*
* 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.gallery3d.data;
import android.graphics.Bitmap;
import android.graphics.BitmapRegionDecoder;
import com.android.gallery3d.common.ApiHelper;
import com.android.gallery3d.ui.ScreenNail;
import com.android.gallery3d.util.ThreadPool.Job;
// MediaItem represents an image or a video item.
public abstract class MediaItem extends MediaObject {
// NOTE: These type numbers are stored in the image cache, so it should not
// not be changed without resetting the cache.
public static final int TYPE_THUMBNAIL = 1;
public static final int TYPE_MICROTHUMBNAIL = 2;
public static final int CACHED_IMAGE_QUALITY = 95;
public static final int IMAGE_READY = 0;
public static final int IMAGE_WAIT = 1;
public static final int IMAGE_ERROR = -1;
public static final String MIME_TYPE_JPEG = "image/jpeg";
private static final int BYTESBUFFE_POOL_SIZE = 4;
private static final int BYTESBUFFER_SIZE = 200 * 1024;
private static int sMicrothumbnailTargetSize = 200;
private static final BytesBufferPool sMicroThumbBufferPool =
new BytesBufferPool(BYTESBUFFE_POOL_SIZE, BYTESBUFFER_SIZE);
private static int sThumbnailTargetSize = 640;
// TODO: fix default value for latlng and change this.
public static final double INVALID_LATLNG = 0f;
public abstract Job<Bitmap> requestImage(int type);
public abstract Job<BitmapRegionDecoder> requestLargeImage();
public MediaItem(Path path, long version) {
super(path, version);
}
public long getDateInMs() {
return 0;
}
public String getName() {
return null;
}
public void getLatLong(double[] latLong) {
latLong[0] = INVALID_LATLNG;
latLong[1] = INVALID_LATLNG;
}
public String[] getTags() {
return null;
}
public Face[] getFaces() {
return null;
}
// The rotation of the full-resolution image. By default, it returns the value of
// getRotation().
public int getFullImageRotation() {
return getRotation();
}
public int getRotation() {
return 0;
}
public long getSize() {
return 0;
}
public abstract String getMimeType();
public String getFilePath() {
return "";
}
// Returns width and height of the media item.
// Returns 0, 0 if the information is not available.
public abstract int getWidth();
public abstract int getHeight();
// This is an alternative for requestImage() in PhotoPage. If this
// is implemented, you don't need to implement requestImage().
public ScreenNail getScreenNail() {
return null;
}
public static int getTargetSize(int type) {
switch (type) {
case TYPE_THUMBNAIL:
return sThumbnailTargetSize;
case TYPE_MICROTHUMBNAIL:
return sMicrothumbnailTargetSize;
default:
throw new RuntimeException(
"should only request thumb/microthumb from cache");
}
}
public static BytesBufferPool getBytesBufferPool() {
return sMicroThumbBufferPool;
}
public static void setThumbnailSizes(int size, int microSize) {
sThumbnailTargetSize = size;
if (sMicrothumbnailTargetSize != microSize) {
sMicrothumbnailTargetSize = microSize;
}
}
}