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Added new feature to dump screenshots to SD Card
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150 changes: 150 additions & 0 deletions
150
GVRf/Framework/framework/src/main/java/org/gearvrf/GVRSticker.java
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| /* Copyright 2015 Samsung Electronics Co., LTD | ||
| * | ||
| * 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 org.gearvrf; | ||
|
|
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| import android.graphics.Bitmap; | ||
| import android.os.Environment; | ||
| import android.util.Log; | ||
|
|
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| import org.gearvrf.utility.Threads; | ||
|
|
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| import java.io.File; | ||
| import java.io.FileNotFoundException; | ||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
|
|
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| /** | ||
| * This class takes screenshots at a specified interval and writes the output PNG files to GearVRFScreenshots directory. | ||
| * The capturing can be stopped by calling {@link GVRSticker#stop()} | ||
| * The images can be used to create Stickers (a GIF animation) | ||
| */ | ||
|
|
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| public class GVRSticker { | ||
| private final GVRContext mGVRContext; | ||
| private final String mTag; | ||
| private final String mDirectory; | ||
| private final long mInterval; | ||
| private boolean mCaptureFlag = true; | ||
| private final static String TAG = "GVRSticker"; | ||
|
|
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| /** | ||
| * Constructor takes the following parameters | ||
| * @param gvrContext | ||
| * @param tag | ||
| * Name for outputting PNG's to the SD Card along with appended frame ID | ||
| * @param interval | ||
| * Time in milliseconds to take screenshot at that interval | ||
| */ | ||
| public GVRSticker(GVRContext gvrContext, String tag, long interval){ | ||
| mGVRContext = gvrContext; | ||
| mTag = tag; | ||
| mInterval = interval; | ||
|
|
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| File sdcard = Environment.getExternalStorageDirectory(); | ||
| mDirectory = sdcard.getAbsolutePath() + "/GearVRFScreenshots/"; | ||
| File d = new File(mDirectory); | ||
| d.mkdirs(); | ||
| } | ||
|
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| private boolean lastScreenshotFinished[] = {true, true, true}; | ||
| private int pboIndex = 0; | ||
|
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| /** | ||
| * Initiate's the screenshot capturing | ||
| * Captures images every {@link GVRSticker#mInterval} milliseconds | ||
| */ | ||
| public void captureScreen() | ||
| { | ||
| mCaptureFlag = true; | ||
| Threads.spawn(new Runnable() | ||
| { | ||
| public void run() | ||
| { | ||
| int frame = 0; | ||
| boolean lastStickerCall; | ||
| while(mCaptureFlag) { | ||
| if (lastScreenshotFinished[pboIndex]) { | ||
| lastStickerCall = mGVRContext | ||
| .captureSticker(newScreenshotCallback(frame, pboIndex), pboIndex); | ||
| if(lastStickerCall) { | ||
| lastScreenshotFinished[pboIndex] = false; | ||
| pboIndex = (pboIndex + 1) % 3; | ||
| frame++; | ||
| } | ||
| } | ||
| else{ | ||
| Log.e(TAG, "Sticker skipped since previous read is not completed"); | ||
| } | ||
| try { | ||
| Thread.sleep(mInterval); | ||
| } catch (InterruptedException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } | ||
| }); | ||
| } | ||
|
|
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| /** | ||
| * Stop's the screenshot thread | ||
| */ | ||
| public void stop(){ | ||
| mCaptureFlag = false; | ||
| } | ||
|
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| private GVRScreenshotCallback newScreenshotCallback(final int frame, final int currentPboIndex) | ||
| { | ||
| return new GVRScreenshotCallback() | ||
| { | ||
| @Override | ||
| public void onScreenCaptured(Bitmap bitmap) | ||
| { | ||
| if (bitmap != null) | ||
| { | ||
| File file = new File(mDirectory + mTag +"_"+ frame +"_" + ".png"); | ||
| FileOutputStream outputStream = null; | ||
| try | ||
| { | ||
| outputStream = new FileOutputStream(file); | ||
| bitmap.compress(Bitmap.CompressFormat.PNG, 100, outputStream); | ||
| } | ||
| catch (FileNotFoundException e) | ||
| { | ||
| e.printStackTrace(); | ||
| } | ||
| finally | ||
| { | ||
| try | ||
| { | ||
| outputStream.close(); | ||
| } | ||
| catch (IOException e) | ||
| { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
| } | ||
| else | ||
| { | ||
| Log.e(TAG, "Returned Bitmap is null for frame " + frame); | ||
| } | ||
|
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| // enable next screenshot | ||
| lastScreenshotFinished[currentPboIndex] = true; | ||
| } | ||
| }; | ||
| } | ||
| } |
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