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@ -27,6 +27,7 @@ import android.provider.OpenableColumns; |
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import android.support.annotation.NonNull; |
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import android.support.annotation.Nullable; |
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import android.support.annotation.Px; |
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import android.util.Log; |
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import java.io.ByteArrayOutputStream; |
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import java.io.FileNotFoundException; |
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@ -34,11 +35,10 @@ import java.io.IOException; |
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import java.io.InputStream; |
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/** |
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* Class who will have all the code link with Media |
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* <p> |
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* Motivation : try to keep the ComposeActivity "smaller" and make modular method |
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* Class with helper methods for obtaining and resizing media files |
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*/ |
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public class MediaUtils { |
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private static final String TAG = "MediaUtils"; |
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public static final int MEDIA_SIZE_UNKNOWN = -1; |
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/** |
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@ -88,30 +88,51 @@ public class MediaUtils { |
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} |
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@Nullable |
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public static Bitmap getImageThumbnail(ContentResolver contentResolver, Uri uri, |
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@Px int thumbnailSize) { |
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public static Bitmap getSampledBitmap(ContentResolver contentResolver, Uri uri, @Px int reqWidth, @Px int reqHeight) { |
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// First decode with inJustDecodeBounds=true to check dimensions
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final BitmapFactory.Options options = new BitmapFactory.Options(); |
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options.inJustDecodeBounds = true; |
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InputStream stream; |
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try { |
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stream = contentResolver.openInputStream(uri); |
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} catch (FileNotFoundException e) { |
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Log.w(TAG, e); |
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return null; |
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} |
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Bitmap source = BitmapFactory.decodeStream(stream); |
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if (source == null) { |
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IOUtils.closeQuietly(stream); |
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BitmapFactory.decodeStream(stream, null, options); |
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IOUtils.closeQuietly(stream); |
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// Calculate inSampleSize
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options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight); |
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// Decode bitmap with inSampleSize set
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options.inJustDecodeBounds = false; |
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try { |
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stream = contentResolver.openInputStream(uri); |
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return BitmapFactory.decodeStream(stream, null, options); |
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} catch (FileNotFoundException e) { |
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Log.w(TAG, e); |
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return null; |
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} catch (OutOfMemoryError e) { |
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Log.e(TAG, "OutOfMemoryError while trying to get sampled Bitmap", e); |
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return null; |
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} finally { |
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IOUtils.closeQuietly(stream); |
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} |
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Bitmap bitmap = ThumbnailUtils.extractThumbnail(source, thumbnailSize, thumbnailSize); |
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source.recycle(); |
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try { |
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if (stream != null) { |
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stream.close(); |
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} |
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} catch (IOException e) { |
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bitmap.recycle(); |
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} |
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@Nullable |
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public static Bitmap getImageThumbnail(ContentResolver contentResolver, Uri uri, |
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@Px int thumbnailSize) { |
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Bitmap source = getSampledBitmap(contentResolver, uri, thumbnailSize, thumbnailSize); |
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if(source != null) { |
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return ThumbnailUtils.extractThumbnail(source, thumbnailSize, thumbnailSize, ThumbnailUtils.OPTIONS_RECYCLE_INPUT); |
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} else { |
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return null; |
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} |
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return bitmap; |
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} |
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@Nullable |
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@ -128,8 +149,7 @@ public class MediaUtils { |
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} |
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public static long getImageSquarePixels(ContentResolver contentResolver, Uri uri) throws FileNotFoundException { |
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InputStream input; |
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input = contentResolver.openInputStream(uri); |
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InputStream input = contentResolver.openInputStream(uri); |
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final BitmapFactory.Options options = new BitmapFactory.Options(); |
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options.inJustDecodeBounds = true; |
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@ -139,4 +159,25 @@ public class MediaUtils { |
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return (long) options.outWidth * options.outHeight; |
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} |
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public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) { |
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// Raw height and width of image
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final int height = options.outHeight; |
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final int width = options.outWidth; |
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int inSampleSize = 1; |
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if (height > reqHeight || width > reqWidth) { |
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final int halfHeight = height / 2; |
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final int halfWidth = width / 2; |
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// Calculate the largest inSampleSize value that is a power of 2 and keeps both
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// height and width larger than the requested height and width.
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while ((halfHeight / inSampleSize) > reqHeight && (halfWidth / inSampleSize) > reqWidth) { |
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inSampleSize *= 2; |
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} |
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} |
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return inSampleSize; |
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} |
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} |
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Konrad Pozniak
6 years ago
committed by