diff options
Diffstat (limited to 'gallerycommon/src/com/android/gallery3d/jpegstream/StreamUtils.java')
-rw-r--r-- | gallerycommon/src/com/android/gallery3d/jpegstream/StreamUtils.java | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/gallerycommon/src/com/android/gallery3d/jpegstream/StreamUtils.java b/gallerycommon/src/com/android/gallery3d/jpegstream/StreamUtils.java deleted file mode 100644 index abd8f681e..000000000 --- a/gallerycommon/src/com/android/gallery3d/jpegstream/StreamUtils.java +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright (C) 2013 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.jpegstream; - -import java.nio.ByteOrder; - -public class StreamUtils { - - private StreamUtils() { - } - - /** - * Copies the input byte array into the output int array with the given - * endianness. If input is not a multiple of 4, ignores the last 1-3 bytes - * and returns true. - */ - public static boolean byteToIntArray(int[] output, byte[] input, ByteOrder endianness) { - int length = input.length - (input.length % 4); - if (output.length * 4 < length) { - throw new ArrayIndexOutOfBoundsException("Output array is too short to hold input"); - } - if (endianness == ByteOrder.BIG_ENDIAN) { - for (int i = 0, j = 0; i < output.length; i++, j += 4) { - output[i] = ((input[j] & 0xFF) << 24) | ((input[j + 1] & 0xFF) << 16) - | ((input[j + 2] & 0xFF) << 8) | ((input[j + 3] & 0xFF)); - } - } else { - for (int i = 0, j = 0; i < output.length; i++, j += 4) { - output[i] = ((input[j + 3] & 0xFF) << 24) | ((input[j + 2] & 0xFF) << 16) - | ((input[j + 1] & 0xFF) << 8) | ((input[j] & 0xFF)); - } - } - return input.length % 4 != 0; - } - - public static int[] byteToIntArray(byte[] input, ByteOrder endianness) { - int[] output = new int[input.length / 4]; - byteToIntArray(output, input, endianness); - return output; - } - - /** - * Uses native endianness. - */ - public static int[] byteToIntArray(byte[] input) { - return byteToIntArray(input, ByteOrder.nativeOrder()); - } - - /** - * Returns the number of bytes in a pixel for a given format defined in - * JpegConfig. - */ - public static int pixelSize(int format) { - switch (format) { - case JpegConfig.FORMAT_ABGR: - case JpegConfig.FORMAT_RGBA: - return 4; - case JpegConfig.FORMAT_RGB: - return 3; - case JpegConfig.FORMAT_GRAYSCALE: - return 1; - default: - return -1; - } - } -} |