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Diffstat (limited to 'src/com/android/camera/Thumbnail.java')
-rw-r--r-- | src/com/android/camera/Thumbnail.java | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/com/android/camera/Thumbnail.java b/src/com/android/camera/Thumbnail.java new file mode 100644 index 000000000..5f8483d6c --- /dev/null +++ b/src/com/android/camera/Thumbnail.java @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2011 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.camera; + +import android.graphics.Bitmap; +import android.media.MediaMetadataRetriever; + +import java.io.FileDescriptor; + +public class Thumbnail { + public static Bitmap createVideoThumbnailBitmap(FileDescriptor fd, int targetWidth) { + return createVideoThumbnailBitmap(null, fd, targetWidth); + } + + public static Bitmap createVideoThumbnailBitmap(String filePath, int targetWidth) { + return createVideoThumbnailBitmap(filePath, null, targetWidth); + } + + private static Bitmap createVideoThumbnailBitmap(String filePath, FileDescriptor fd, + int targetWidth) { + Bitmap bitmap = null; + MediaMetadataRetriever retriever = new MediaMetadataRetriever(); + try { + if (filePath != null) { + retriever.setDataSource(filePath); + } else { + retriever.setDataSource(fd); + } + bitmap = retriever.getFrameAtTime(-1); + } catch (IllegalArgumentException ex) { + // Assume this is a corrupt video file + } catch (RuntimeException ex) { + // Assume this is a corrupt video file. + } finally { + try { + retriever.release(); + } catch (RuntimeException ex) { + // Ignore failures while cleaning up. + } + } + if (bitmap == null) return null; + + // Scale down the bitmap if it is bigger than we need. + int width = bitmap.getWidth(); + int height = bitmap.getHeight(); + if (width > targetWidth) { + float scale = (float) targetWidth / width; + int w = Math.round(scale * width); + int h = Math.round(scale * height); + bitmap = Bitmap.createScaledBitmap(bitmap, w, h, true); + } + return bitmap; + } +} |