/*
* Copyright (C) 2009 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.cooliris.media;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.*;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import android.content.ContentResolver;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.util.Log;
import com.cooliris.cache.CacheService;
public class UriTexture extends Texture {
public static final int MAX_RESOLUTION = 1024;
private static final String TAG = "UriTexture";
protected String mUri;
protected long mCacheId;
private static final int MAX_RESOLUTION_A = MAX_RESOLUTION;
private static final int MAX_RESOLUTION_B = MAX_RESOLUTION;
public static final String URI_CACHE = CacheService.getCachePath("hires-image-cache");
private static final String USER_AGENT = "Cooliris-ImageDownload";
private static final int CONNECTION_TIMEOUT = 20000; // ms.
public static final HttpParams HTTP_PARAMS;
public static final SchemeRegistry SCHEME_REGISTRY;
static {
// Prepare HTTP parameters.
HttpParams params = new BasicHttpParams();
HttpConnectionParams.setStaleCheckingEnabled(params, false);
HttpConnectionParams.setConnectionTimeout(params, CONNECTION_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, CONNECTION_TIMEOUT);
HttpClientParams.setRedirecting(params, true);
HttpProtocolParams.setUserAgent(params, USER_AGENT);
HTTP_PARAMS = params;
// Register HTTP protocol.
SCHEME_REGISTRY = new SchemeRegistry();
SCHEME_REGISTRY.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
}
private SingleClientConnManager mConnectionManager;
static {
File uri_cache = new File(URI_CACHE);
uri_cache.mkdirs();
}
public UriTexture(String imageUri) {
mUri = imageUri;
}
public void setCacheId(long id) {
mCacheId = id;
}
private static int computeSampleSize(InputStream stream, int maxResolutionX,
int maxResolutionY) {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(stream, null, options);
int maxNumOfPixels = maxResolutionX * maxResolutionY;
int minSideLength = Math.min(maxResolutionX, maxResolutionY) / 2;
return Utils.computeSampleSize(options, minSideLength, maxNumOfPixels);
}
public static final Bitmap createFromUri(Context context, String uri, int maxResolutionX, int maxResolutionY, long cacheId,
ClientConnectionManager connectionManager) throws IOException, URISyntaxException, OutOfMemoryError {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inScaled = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
long crc64 = 0;
Bitmap bitmap = null;
if (uri.startsWith(ContentResolver.SCHEME_CONTENT)) {
// We need the filepath for the given content uri
crc64 = cacheId;
} else {
crc64 = Utils.Crc64Long(uri);
}
bitmap = createFromCache(crc64, maxResolutionX);
if (bitmap != null) {
return bitmap;
}
final boolean local = uri.startsWith(ContentResolver.SCHEME_CONTENT) || uri.startsWith("file://");
// Get the input stream for computing the sample size.
BufferedInputStream bufferedInput = null;
if (uri.startsWith(ContentResolver.SCHEME_CONTENT) ||
uri.startsWith(ContentResolver.SCHEME_FILE)) {
// Get the stream from a local file.
bufferedInput = new BufferedInputStream(context.getContentResolver()
.openInputStream(Uri.parse(uri)), 16384);
} else {
// Get the stream from a remote URL.
bufferedInput = createInputStreamFromRemoteUrl(uri, connectionManager);
}
// Compute the sample size, i.e., not decoding real pixels.
if (bufferedInput != null) {
options.inSampleSize = computeSampleSize(bufferedInput, maxResolutionX, maxResolutionY);
} else {
return null;
}
// Get the input stream again for decoding it to a bitmap.
bufferedInput = null;
if (uri.startsWith(ContentResolver.SCHEME_CONTENT) ||
uri.startsWith(ContentResolver.SCHEME_FILE)) {
// Get the stream from a local file.
bufferedInput = new BufferedInputStream(context.getContentResolver()
.openInputStream(Uri.parse(uri)), 16384);
} else {
// Get the stream from a remote URL.
bufferedInput = createInputStreamFromRemoteUrl(uri, connectionManager);
}
// Decode bufferedInput to a bitmap.
if (bufferedInput != null) {
options.inDither = false;
options.inJustDecodeBounds = false;
Thread timeoutThread = new Thread("BitmapTimeoutThread") {
public void run() {
try {
Thread.sleep(6000);
options.requestCancelDecode();
} catch (InterruptedException e) {
}
}
};
timeoutThread.start();
bitmap = BitmapFactory.decodeStream(bufferedInput, null, options);
}
if ((options.inSampleSize > 1 || !local) && bitmap != null) {
writeToCache(crc64, bitmap, maxResolutionX / options.inSampleSize);
}
return bitmap;
}
private static final BufferedInputStream createInputStreamFromRemoteUrl(
String uri, ClientConnectionManager connectionManager) {
InputStream contentInput = null;
if (connectionManager == null) {
try {
URL url = new URI(uri).toURL();
URLConnection conn = url.openConnection();
conn.connect();
contentInput = conn.getInputStream();
} catch (Exception e) {
Log.w(TAG, "Request failed: " + uri);
e.printStackTrace();
return null;
}
} else {
// We create a cancelable http request from the client
final DefaultHttpClient mHttpClient = new DefaultHttpClient(connectionManager, HTTP_PARAMS);
HttpUriRequest request = new HttpGet(uri);
// Execute the HTTP request.
HttpResponse httpResponse = null;
try {
httpResponse = mHttpClient.execute(request);
HttpEntity entity = httpResponse.getEntity();
if (entity != null) {
// Wrap the entity input stream in a GZIP decoder if
// necessary.
contentInput = entity.getContent();
}
} catch (Exception e) {
Log.w(TAG, "Request failed: " + request.getURI());
return null;
}
}
if (contentInput != null) {
return new BufferedInputStream(contentInput, 4096);
} else {
return null;
}
}
@Override
protected Bitmap load(RenderView view) {
Bitmap bitmap = null;
if (mUri == null)
return bitmap;
try {
if (mUri.startsWith("http://")) {
if (!isCached(Utils.Crc64Long(mUri), MAX_RESOLUTION_A)) {
mConnectionManager = new SingleClientConnManager(HTTP_PARAMS, SCHEME_REGISTRY);
}
}
bitmap = createFromUri(view.getContext(), mUri, MAX_RESOLUTION_A, MAX_RESOLUTION_B, mCacheId, mConnectionManager);
} catch (Exception e2) {
Log.e(TAG, "Unable to load image from URI " + mUri);
e2.printStackTrace();
}
return bitmap;
}
public static final String createFilePathFromCrc64(long crc64, int maxResolution) {
return URI_CACHE + crc64 + "_" + maxResolution + ".cache";
}
public static boolean isCached(long crc64, int maxResolution) {
String file = null;
if (crc64 != 0) {
file = createFilePathFromCrc64(crc64, maxResolution);
try {
new FileInputStream(file);
return true;
} catch (FileNotFoundException e) {
return false;
}
}
return false;
}
public static Bitmap createFromCache(long crc64, int maxResolution) {
try {
String file = null;
Bitmap bitmap = null;
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inScaled = false;
options.inPreferredConfig = Bitmap.Config.RGB_565;
options.inDither = true;
if (crc64 != 0) {
file = createFilePathFromCrc64(crc64, maxResolution);
bitmap = BitmapFactory.decodeFile(file, options);
}
return bitmap;
} catch (Exception e) {
return null;
}
}
public static String writeHttpDataInDirectory(Context context, String uri, String path) {
long crc64 = Utils.Crc64Long(uri);
if (!isCached(crc64, 1024)) {
Bitmap bitmap;
try {
bitmap = UriTexture.createFromUri(context, uri, 1024, 1024, crc64, null);
} catch (OutOfMemoryError e) {
return null;
} catch (IOException e) {
return null;
} catch (URISyntaxException e) {
return null;
}
bitmap.recycle();
}
String fileString = createFilePathFromCrc64(crc64, 1024);
try {
File file = new File(fileString);
if (file.exists()) {
// We write a copy of this file
String newPath = path + (path.endsWith("/") ? "" : "/") + crc64 + ".jpg";
File newFile = new File(newPath);
Utils.Copy(file, newFile);
return newPath;
}
return null;
} catch (Exception e) {
return null;
}
}
public static void writeToCache(long crc64, Bitmap bitmap, int maxResolution) {
String file = createFilePathFromCrc64(crc64, maxResolution);
if (bitmap != null && file != null && crc64 != 0) {
try {
File fileC = new File(file);
fileC.createNewFile();
final FileOutputStream fos = new FileOutputStream(fileC);
final BufferedOutputStream bos = new BufferedOutputStream(fos, 16384);
bitmap.compress(Bitmap.CompressFormat.JPEG, 80, bos);
bos.flush();
bos.close();
fos.close();
} catch (Exception e) {
}
}
}
public static void invalidateCache(long crc64, int maxResolution) {
String file = createFilePathFromCrc64(crc64, maxResolution);
if (file != null && crc64 != 0) {
try {
File fileC = new File(file);
fileC.delete();
} catch (Exception e) {
}
}
}
@Override
public void finalize() {
if (mConnectionManager != null) {
mConnectionManager.shutdown();
}
}
}