src/com/android/mms/ui/UriImage.java - platform/packages/apps/Mms - Git at Google

 /*
  * Copyright (C) 2008 Esmertec AG.
  * Copyright (C) 2008 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.mms.ui;

 import com.android.mms.model.ImageModel;
 import com.android.mms.LogTag;

 import com.google.android.mms.ContentType;
 import com.google.android.mms.pdu.PduPart;
 import android.database.sqlite.SqliteWrapper;

 import android.content.Context;
 import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.Bitmap.CompressFormat;
 import android.net.Uri;
 import android.provider.MediaStore.Images;
 import android.provider.Telephony.Mms.Part;
 import android.text.TextUtils;
 import android.util.Log;
 import android.webkit.MimeTypeMap;

 import java.io.ByteArrayOutputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;

 public class UriImage {
     private static final String TAG = "Mms/image";
     private static final boolean DEBUG = false;
     private static final boolean LOCAL_LOGV = false;

     private final Context mContext;
     private final Uri mUri;
     private String mContentType;
     private String mPath;
     private String mSrc;
     private int mWidth;
     private int mHeight;

     public UriImage(Context context, Uri uri) {
         if ((null == context) || (null == uri)) {
             throw new IllegalArgumentException();
         }

         String scheme = uri.getScheme();
         if (scheme.equals("content")) {
             initFromContentUri(context, uri);
         } else if (uri.getScheme().equals("file")) {
             initFromFile(context, uri);
         }

         mSrc = mPath.substring(mPath.lastIndexOf('/') + 1);

         if(mSrc.startsWith(".") && mSrc.length() > 1) {
             mSrc = mSrc.substring(1);
         }

         // Some MMSCs appear to have problems with filenames
         // containing a space.  So just replace them with
         // underscores in the name, which is typically not
         // visible to the user anyway.
         mSrc = mSrc.replace(' ', '_');

         mContext = context;
         mUri = uri;

         decodeBoundsInfo();

         if (LOCAL_LOGV) {
             Log.v(TAG, "UriImage uri: " + uri + " mPath: " + mPath + " mWidth: " + mWidth +
                     " mHeight: " + mHeight);
         }
     }

     private void initFromFile(Context context, Uri uri) {
         mPath = uri.getPath();
         MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
         String extension = MimeTypeMap.getFileExtensionFromUrl(mPath);
         if (TextUtils.isEmpty(extension)) {
             // getMimeTypeFromExtension() doesn't handle spaces in filenames nor can it handle
             // urlEncoded strings. Let's try one last time at finding the extension.
             int dotPos = mPath.lastIndexOf('.');
             if (0 <= dotPos) {
                 extension = mPath.substring(dotPos + 1);
             }
         }
         mContentType = mimeTypeMap.getMimeTypeFromExtension(extension);
         // It's ok if mContentType is null. Eventually we'll show a toast telling the
         // user the picture couldn't be attached.
     }

     private void initFromContentUri(Context context, Uri uri) {
         Cursor c = SqliteWrapper.query(context, context.getContentResolver(),
                             uri, null, null, null, null);

         if (c == null) {
             throw new IllegalArgumentException(
                     "Query on " + uri + " returns null result.");
         }

         try {
             if ((c.getCount() != 1) || !c.moveToFirst()) {
                 throw new IllegalArgumentException(
                         "Query on " + uri + " returns 0 or multiple rows.");
             }

             String filePath;
             if (ImageModel.isMmsUri(uri)) {
                 filePath = c.getString(c.getColumnIndexOrThrow(Part.FILENAME));
                 if (TextUtils.isEmpty(filePath)) {
                     filePath = c.getString(
                             c.getColumnIndexOrThrow(Part._DATA));
                 }
                 mContentType = c.getString(
                         c.getColumnIndexOrThrow(Part.CONTENT_TYPE));
             } else {
                 filePath = uri.getPath();
                 mContentType = c.getString(
                         c.getColumnIndexOrThrow(Images.Media.MIME_TYPE));
             }
             mPath = filePath;
         } finally {
             c.close();
         }
     }

     private void decodeBoundsInfo() {
         InputStream input = null;
         try {
             input = mContext.getContentResolver().openInputStream(mUri);
             BitmapFactory.Options opt = new BitmapFactory.Options();
             opt.inJustDecodeBounds = true;
             BitmapFactory.decodeStream(input, null, opt);
             mWidth = opt.outWidth;
             mHeight = opt.outHeight;
         } catch (FileNotFoundException e) {
             // Ignore
             Log.e(TAG, "IOException caught while opening stream", e);
         } finally {
             if (null != input) {
                 try {
                     input.close();
                 } catch (IOException e) {
                     // Ignore
                     Log.e(TAG, "IOException caught while closing stream", e);
                 }
             }
         }
     }

     public String getContentType() {
         return mContentType;
     }

     public String getSrc() {
         return mSrc;
     }

     public int getWidth() {
         return mWidth;
     }

     public int getHeight() {
         return mHeight;
     }

     /**
      * Get a version of this image resized to fit the given dimension and byte-size limits. Note
      * that the content type of the resulting PduPart may not be the same as the content type of
      * this UriImage; always call {@link PduPart#getContentType()} to get the new content type.
      *
      * @param widthLimit The width limit, in pixels
      * @param heightLimit The height limit, in pixels
      * @param byteLimit The binary size limit, in bytes
      * @return A new PduPart containing the resized image data
      */
     public PduPart getResizedImageAsPart(int widthLimit, int heightLimit, int byteLimit) {
         PduPart part = new PduPart();

         byte[] data = getResizedImageData(widthLimit, heightLimit, byteLimit);
         if (data == null) {
             if (LOCAL_LOGV) {
                 Log.v(TAG, "Resize image failed.");
             }
             return null;
         }

         part.setData(data);
         // getResizedImageData ALWAYS compresses to JPEG, regardless of the original content type
         part.setContentType(ContentType.IMAGE_JPEG.getBytes());

         return part;
     }

     private static final int NUMBER_OF_RESIZE_ATTEMPTS = 4;

     /**
      * Resize and recompress the image such that it fits the given limits. The resulting byte
      * array contains an image in JPEG format, regardless of the original image's content type.
      * @param widthLimit The width limit, in pixels
      * @param heightLimit The height limit, in pixels
      * @param byteLimit The binary size limit, in bytes
      * @return A resized/recompressed version of this image, in JPEG format
      */
     private byte[] getResizedImageData(int widthLimit, int heightLimit, int byteLimit) {
         int outWidth = mWidth;
         int outHeight = mHeight;

         float scaleFactor = 1.F;
         while ((outWidth * scaleFactor > widthLimit) || (outHeight * scaleFactor > heightLimit)) {
             scaleFactor *= .75F;
         }

         if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
             Log.v(TAG, "getResizedImageData: wlimit=" + widthLimit +
                     ", hlimit=" + heightLimit + ", sizeLimit=" + byteLimit +
                     ", mWidth=" + mWidth + ", mHeight=" + mHeight +
                     ", initialScaleFactor=" + scaleFactor +
                     ", mUri=" + mUri);
         }

         InputStream input = null;
         try {
             ByteArrayOutputStream os = null;
             int attempts = 1;
             int sampleSize = 1;
             BitmapFactory.Options options = new BitmapFactory.Options();
             int quality = MessageUtils.IMAGE_COMPRESSION_QUALITY;
             Bitmap b = null;

             // In this loop, attempt to decode the stream with the best possible subsampling (we
             // start with 1, which means no subsampling - get the original content) without running
             // out of memory.
             do {
                 input = mContext.getContentResolver().openInputStream(mUri);
                 options.inSampleSize = sampleSize;
                 try {
                     b = BitmapFactory.decodeStream(input, null, options);
                 } catch (OutOfMemoryError e) {
                     Log.w(TAG, "getResizedImageData: img too large to decode (OutOfMemoryError), " +
                             "may try with larger sampleSize. Curr sampleSize=" + sampleSize);
                     sampleSize *= 2;    // works best as a power of two
                     attempts++;
                     continue;
                 } finally {
                     if (input != null) {
                         try {
                             input.close();
                         } catch (IOException e) {
                             Log.e(TAG, e.getMessage(), e);
                         }
                     }
                 }
             } while (b == null && attempts < NUMBER_OF_RESIZE_ATTEMPTS);

             if (b == null) {
                 return null;
             }

             attempts = 1;   // reset count for second loop
             // In this loop, we attempt to compress/resize the content to fit the given dimension
             // and file-size limits.
             do {
                 try {
                     if (options.outWidth > widthLimit || options.outHeight > heightLimit ||
                             (os != null && os.size() > byteLimit)) {
                         // The decoder does not support the inSampleSize option.
                         // Scale the bitmap using Bitmap library.
                         int scaledWidth = (int)(outWidth * scaleFactor);
                         int scaledHeight = (int)(outHeight * scaleFactor);

                         if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
                             Log.v(TAG, "getResizedImageData: retry scaling using " +
                                     "Bitmap.createScaledBitmap: w=" + scaledWidth +
                                     ", h=" + scaledHeight);
                         }

                         b = Bitmap.createScaledBitmap(b, scaledWidth, scaledHeight, false);
                         if (b == null) {
                             return null;
                         }
                     }

                     // Compress the image into a JPG. Start with MessageUtils.IMAGE_COMPRESSION_QUALITY.
                     // In case that the image byte size is still too large reduce the quality in
                     // proportion to the desired byte size.
                     os = new ByteArrayOutputStream();
                     b.compress(CompressFormat.JPEG, quality, os);
                     int jpgFileSize = os.size();
                     if (jpgFileSize > byteLimit) {
                         quality = (quality * byteLimit) / jpgFileSize;  // watch for int division!
                         if (quality < MessageUtils.MINIMUM_IMAGE_COMPRESSION_QUALITY) {
                             quality = MessageUtils.MINIMUM_IMAGE_COMPRESSION_QUALITY;
                         }

                         if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
                             Log.v(TAG, "getResizedImageData: compress(2) w/ quality=" + quality);
                         }

                         os = new ByteArrayOutputStream();
                         b.compress(CompressFormat.JPEG, quality, os);
                     }
                 } catch (java.lang.OutOfMemoryError e) {
                     Log.w(TAG, "getResizedImageData - image too big (OutOfMemoryError), will try "
                             + " with smaller scale factor, cur scale factor: " + scaleFactor);
                     // fall through and keep trying with a smaller scale factor.
                 }
                 if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
                     Log.v(TAG, "attempt=" + attempts
                             + " size=" + (os == null ? 0 : os.size())
                             + " width=" + outWidth * scaleFactor
                             + " height=" + outHeight * scaleFactor
                             + " scaleFactor=" + scaleFactor
                             + " quality=" + quality);
                 }
                 scaleFactor *= .75F;
                 attempts++;
             } while ((os == null || os.size() > byteLimit) && attempts < NUMBER_OF_RESIZE_ATTEMPTS);
             b.recycle();        // done with the bitmap, release the memory

             return os == null ? null : os.toByteArray();
         } catch (FileNotFoundException e) {
             Log.e(TAG, e.getMessage(), e);
             return null;
         } catch (java.lang.OutOfMemoryError e) {
             Log.e(TAG, e.getMessage(), e);
             return null;
         }
     }
 }
	/*
	* Copyright (C) 2008 Esmertec AG.
	* Copyright (C) 2008 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.mms.ui;

	import com.android.mms.model.ImageModel;
	import com.android.mms.LogTag;

	import com.google.android.mms.ContentType;
	import com.google.android.mms.pdu.PduPart;
	import android.database.sqlite.SqliteWrapper;

	import android.content.Context;
	import android.database.Cursor;
	import android.graphics.Bitmap;
	import android.graphics.BitmapFactory;
	import android.graphics.Bitmap.CompressFormat;
	import android.net.Uri;
	import android.provider.MediaStore.Images;
	import android.provider.Telephony.Mms.Part;
	import android.text.TextUtils;
	import android.util.Log;
	import android.webkit.MimeTypeMap;

	import java.io.ByteArrayOutputStream;
	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.io.InputStream;

	public class UriImage {
	private static final String TAG = "Mms/image";
	private static final boolean DEBUG = false;
	private static final boolean LOCAL_LOGV = false;

	private final Context mContext;
	private final Uri mUri;
	private String mContentType;
	private String mPath;
	private String mSrc;
	private int mWidth;
	private int mHeight;

	public UriImage(Context context, Uri uri) {
	if ((null == context) \|\| (null == uri)) {
	throw new IllegalArgumentException();
	}

	String scheme = uri.getScheme();
	if (scheme.equals("content")) {
	initFromContentUri(context, uri);
	} else if (uri.getScheme().equals("file")) {
	initFromFile(context, uri);
	}

	mSrc = mPath.substring(mPath.lastIndexOf('/') + 1);

	if(mSrc.startsWith(".") && mSrc.length() > 1) {
	mSrc = mSrc.substring(1);
	}

	// Some MMSCs appear to have problems with filenames
	// containing a space. So just replace them with
	// underscores in the name, which is typically not
	// visible to the user anyway.
	mSrc = mSrc.replace(' ', '_');

	mContext = context;
	mUri = uri;

	decodeBoundsInfo();

	if (LOCAL_LOGV) {
	Log.v(TAG, "UriImage uri: " + uri + " mPath: " + mPath + " mWidth: " + mWidth +
	" mHeight: " + mHeight);
	}
	}

	private void initFromFile(Context context, Uri uri) {
	mPath = uri.getPath();
	MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
	String extension = MimeTypeMap.getFileExtensionFromUrl(mPath);
	if (TextUtils.isEmpty(extension)) {
	// getMimeTypeFromExtension() doesn't handle spaces in filenames nor can it handle
	// urlEncoded strings. Let's try one last time at finding the extension.
	int dotPos = mPath.lastIndexOf('.');
	if (0 <= dotPos) {
	extension = mPath.substring(dotPos + 1);
	}
	}
	mContentType = mimeTypeMap.getMimeTypeFromExtension(extension);
	// It's ok if mContentType is null. Eventually we'll show a toast telling the
	// user the picture couldn't be attached.
	}

	private void initFromContentUri(Context context, Uri uri) {
	Cursor c = SqliteWrapper.query(context, context.getContentResolver(),
	uri, null, null, null, null);

	if (c == null) {
	throw new IllegalArgumentException(
	"Query on " + uri + " returns null result.");
	}

	try {
	if ((c.getCount() != 1) \|\| !c.moveToFirst()) {
	throw new IllegalArgumentException(
	"Query on " + uri + " returns 0 or multiple rows.");
	}

	String filePath;
	if (ImageModel.isMmsUri(uri)) {
	filePath = c.getString(c.getColumnIndexOrThrow(Part.FILENAME));
	if (TextUtils.isEmpty(filePath)) {
	filePath = c.getString(
	c.getColumnIndexOrThrow(Part._DATA));
	}
	mContentType = c.getString(
	c.getColumnIndexOrThrow(Part.CONTENT_TYPE));
	} else {
	filePath = uri.getPath();
	mContentType = c.getString(
	c.getColumnIndexOrThrow(Images.Media.MIME_TYPE));
	}
	mPath = filePath;
	} finally {
	c.close();
	}
	}

	private void decodeBoundsInfo() {
	InputStream input = null;
	try {
	input = mContext.getContentResolver().openInputStream(mUri);
	BitmapFactory.Options opt = new BitmapFactory.Options();
	opt.inJustDecodeBounds = true;
	BitmapFactory.decodeStream(input, null, opt);
	mWidth = opt.outWidth;
	mHeight = opt.outHeight;
	} catch (FileNotFoundException e) {
	// Ignore
	Log.e(TAG, "IOException caught while opening stream", e);
	} finally {
	if (null != input) {
	try {
	input.close();
	} catch (IOException e) {
	// Ignore
	Log.e(TAG, "IOException caught while closing stream", e);
	}
	}
	}
	}

	public String getContentType() {
	return mContentType;
	}

	public String getSrc() {
	return mSrc;
	}

	public int getWidth() {
	return mWidth;
	}

	public int getHeight() {
	return mHeight;
	}

	/**
	* Get a version of this image resized to fit the given dimension and byte-size limits. Note
	* that the content type of the resulting PduPart may not be the same as the content type of
	* this UriImage; always call {@link PduPart#getContentType()} to get the new content type.
	*
	* @param widthLimit The width limit, in pixels
	* @param heightLimit The height limit, in pixels
	* @param byteLimit The binary size limit, in bytes
	* @return A new PduPart containing the resized image data
	*/
	public PduPart getResizedImageAsPart(int widthLimit, int heightLimit, int byteLimit) {
	PduPart part = new PduPart();

	byte[] data = getResizedImageData(widthLimit, heightLimit, byteLimit);
	if (data == null) {
	if (LOCAL_LOGV) {
	Log.v(TAG, "Resize image failed.");
	}
	return null;
	}

	part.setData(data);
	// getResizedImageData ALWAYS compresses to JPEG, regardless of the original content type
	part.setContentType(ContentType.IMAGE_JPEG.getBytes());

	return part;
	}

	private static final int NUMBER_OF_RESIZE_ATTEMPTS = 4;

	/**
	* Resize and recompress the image such that it fits the given limits. The resulting byte
	* array contains an image in JPEG format, regardless of the original image's content type.
	* @param widthLimit The width limit, in pixels
	* @param heightLimit The height limit, in pixels
	* @param byteLimit The binary size limit, in bytes
	* @return A resized/recompressed version of this image, in JPEG format
	*/
	private byte[] getResizedImageData(int widthLimit, int heightLimit, int byteLimit) {
	int outWidth = mWidth;
	int outHeight = mHeight;

	float scaleFactor = 1.F;
	while ((outWidth * scaleFactor > widthLimit) \|\| (outHeight * scaleFactor > heightLimit)) {
	scaleFactor *= .75F;
	}

	if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
	Log.v(TAG, "getResizedImageData: wlimit=" + widthLimit +
	", hlimit=" + heightLimit + ", sizeLimit=" + byteLimit +
	", mWidth=" + mWidth + ", mHeight=" + mHeight +
	", initialScaleFactor=" + scaleFactor +
	", mUri=" + mUri);
	}

	InputStream input = null;
	try {
	ByteArrayOutputStream os = null;
	int attempts = 1;
	int sampleSize = 1;
	BitmapFactory.Options options = new BitmapFactory.Options();
	int quality = MessageUtils.IMAGE_COMPRESSION_QUALITY;
	Bitmap b = null;

	// In this loop, attempt to decode the stream with the best possible subsampling (we
	// start with 1, which means no subsampling - get the original content) without running
	// out of memory.
	do {
	input = mContext.getContentResolver().openInputStream(mUri);
	options.inSampleSize = sampleSize;
	try {
	b = BitmapFactory.decodeStream(input, null, options);
	} catch (OutOfMemoryError e) {
	Log.w(TAG, "getResizedImageData: img too large to decode (OutOfMemoryError), " +
	"may try with larger sampleSize. Curr sampleSize=" + sampleSize);
	sampleSize *= 2; // works best as a power of two
	attempts++;
	continue;
	} finally {
	if (input != null) {
	try {
	input.close();
	} catch (IOException e) {
	Log.e(TAG, e.getMessage(), e);
	}
	}
	}
	} while (b == null && attempts < NUMBER_OF_RESIZE_ATTEMPTS);

	if (b == null) {
	return null;
	}

	attempts = 1; // reset count for second loop
	// In this loop, we attempt to compress/resize the content to fit the given dimension
	// and file-size limits.
	do {
	try {
	if (options.outWidth > widthLimit \|\| options.outHeight > heightLimit \|\|
	(os != null && os.size() > byteLimit)) {
	// The decoder does not support the inSampleSize option.
	// Scale the bitmap using Bitmap library.
	int scaledWidth = (int)(outWidth * scaleFactor);
	int scaledHeight = (int)(outHeight * scaleFactor);

	if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
	Log.v(TAG, "getResizedImageData: retry scaling using " +
	"Bitmap.createScaledBitmap: w=" + scaledWidth +
	", h=" + scaledHeight);
	}

	b = Bitmap.createScaledBitmap(b, scaledWidth, scaledHeight, false);
	if (b == null) {
	return null;
	}
	}

	// Compress the image into a JPG. Start with MessageUtils.IMAGE_COMPRESSION_QUALITY.
	// In case that the image byte size is still too large reduce the quality in
	// proportion to the desired byte size.
	os = new ByteArrayOutputStream();
	b.compress(CompressFormat.JPEG, quality, os);
	int jpgFileSize = os.size();
	if (jpgFileSize > byteLimit) {
	quality = (quality * byteLimit) / jpgFileSize; // watch for int division!
	if (quality < MessageUtils.MINIMUM_IMAGE_COMPRESSION_QUALITY) {
	quality = MessageUtils.MINIMUM_IMAGE_COMPRESSION_QUALITY;
	}

	if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
	Log.v(TAG, "getResizedImageData: compress(2) w/ quality=" + quality);
	}

	os = new ByteArrayOutputStream();
	b.compress(CompressFormat.JPEG, quality, os);
	}
	} catch (java.lang.OutOfMemoryError e) {
	Log.w(TAG, "getResizedImageData - image too big (OutOfMemoryError), will try "
	+ " with smaller scale factor, cur scale factor: " + scaleFactor);
	// fall through and keep trying with a smaller scale factor.
	}
	if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
	Log.v(TAG, "attempt=" + attempts
	+ " size=" + (os == null ? 0 : os.size())
	+ " width=" + outWidth * scaleFactor
	+ " height=" + outHeight * scaleFactor
	+ " scaleFactor=" + scaleFactor
	+ " quality=" + quality);
	}
	scaleFactor *= .75F;
	attempts++;
	} while ((os == null \|\| os.size() > byteLimit) && attempts < NUMBER_OF_RESIZE_ATTEMPTS);
	b.recycle(); // done with the bitmap, release the memory

	return os == null ? null : os.toByteArray();
	} catch (FileNotFoundException e) {
	Log.e(TAG, e.getMessage(), e);
	return null;
	} catch (java.lang.OutOfMemoryError e) {
	Log.e(TAG, e.getMessage(), e);
	return null;
	}
	}
	}