summaryrefslogtreecommitdiffstats
path: root/src/com/android/gallery3d/app/VideoUtils.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/com/android/gallery3d/app/VideoUtils.java')
-rw-r--r--src/com/android/gallery3d/app/VideoUtils.java328
1 files changed, 0 insertions, 328 deletions
diff --git a/src/com/android/gallery3d/app/VideoUtils.java b/src/com/android/gallery3d/app/VideoUtils.java
deleted file mode 100644
index a3c3ef273..000000000
--- a/src/com/android/gallery3d/app/VideoUtils.java
+++ /dev/null
@@ -1,328 +0,0 @@
-/*
- * Copyright (C) 2012 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.
- */
-
-// Modified example based on mp4parser google code open source project.
-// http://code.google.com/p/mp4parser/source/browse/trunk/examples/src/main/java/com/googlecode/mp4parser/ShortenExample.java
-
-package com.android.gallery3d.app;
-
-import android.media.MediaCodec.BufferInfo;
-import android.media.MediaExtractor;
-import android.media.MediaFormat;
-import android.media.MediaMetadataRetriever;
-import android.media.MediaMuxer;
-import android.util.Log;
-
-import com.android.gallery3d.common.ApiHelper;
-import com.android.gallery3d.util.SaveVideoFileInfo;
-import com.coremedia.iso.IsoFile;
-import com.coremedia.iso.boxes.TimeToSampleBox;
-import com.googlecode.mp4parser.authoring.Movie;
-import com.googlecode.mp4parser.authoring.Track;
-import com.googlecode.mp4parser.authoring.builder.DefaultMp4Builder;
-import com.googlecode.mp4parser.authoring.container.mp4.MovieCreator;
-import com.googlecode.mp4parser.authoring.tracks.CroppedTrack;
-
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.RandomAccessFile;
-import java.nio.ByteBuffer;
-import java.nio.channels.FileChannel;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.LinkedList;
-import java.util.List;
-
-public class VideoUtils {
- private static final String LOGTAG = "VideoUtils";
- private static final int DEFAULT_BUFFER_SIZE = 1 * 1024 * 1024;
-
- /**
- * Remove the sound track.
- */
- public static void startMute(String filePath, SaveVideoFileInfo dstFileInfo)
- throws IOException {
- if (ApiHelper.HAS_MEDIA_MUXER) {
- genVideoUsingMuxer(filePath, dstFileInfo.mFile.getPath(), -1, -1,
- false, true);
- } else {
- startMuteUsingMp4Parser(filePath, dstFileInfo);
- }
- }
-
- /**
- * Shortens/Crops tracks
- */
- public static void startTrim(File src, File dst, int startMs, int endMs)
- throws IOException {
- if (ApiHelper.HAS_MEDIA_MUXER) {
- genVideoUsingMuxer(src.getPath(), dst.getPath(), startMs, endMs,
- true, true);
- } else {
- trimUsingMp4Parser(src, dst, startMs, endMs);
- }
- }
-
- private static void startMuteUsingMp4Parser(String filePath,
- SaveVideoFileInfo dstFileInfo) throws FileNotFoundException, IOException {
- File dst = dstFileInfo.mFile;
- File src = new File(filePath);
- RandomAccessFile randomAccessFile = new RandomAccessFile(src, "r");
- Movie movie = MovieCreator.build(randomAccessFile.getChannel());
-
- // remove all tracks we will create new tracks from the old
- List<Track> tracks = movie.getTracks();
- movie.setTracks(new LinkedList<Track>());
-
- for (Track track : tracks) {
- if (track.getHandler().equals("vide")) {
- movie.addTrack(track);
- }
- }
- writeMovieIntoFile(dst, movie);
- randomAccessFile.close();
- }
-
- private static void writeMovieIntoFile(File dst, Movie movie)
- throws IOException {
- if (!dst.exists()) {
- dst.createNewFile();
- }
-
- IsoFile out = new DefaultMp4Builder().build(movie);
- FileOutputStream fos = new FileOutputStream(dst);
- FileChannel fc = fos.getChannel();
- out.getBox(fc); // This one build up the memory.
-
- fc.close();
- fos.close();
- }
-
- /**
- * @param srcPath the path of source video file.
- * @param dstPath the path of destination video file.
- * @param startMs starting time in milliseconds for trimming. Set to
- * negative if starting from beginning.
- * @param endMs end time for trimming in milliseconds. Set to negative if
- * no trimming at the end.
- * @param useAudio true if keep the audio track from the source.
- * @param useVideo true if keep the video track from the source.
- * @throws IOException
- */
- private static void genVideoUsingMuxer(String srcPath, String dstPath,
- int startMs, int endMs, boolean useAudio, boolean useVideo)
- throws IOException {
- // Set up MediaExtractor to read from the source.
- MediaExtractor extractor = new MediaExtractor();
- extractor.setDataSource(srcPath);
-
- int trackCount = extractor.getTrackCount();
-
- // Set up MediaMuxer for the destination.
- MediaMuxer muxer;
- muxer = new MediaMuxer(dstPath, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
-
- // Set up the tracks and retrieve the max buffer size for selected
- // tracks.
- HashMap<Integer, Integer> indexMap = new HashMap<Integer,
- Integer>(trackCount);
- int bufferSize = -1;
- for (int i = 0; i < trackCount; i++) {
- MediaFormat format = extractor.getTrackFormat(i);
- String mime = format.getString(MediaFormat.KEY_MIME);
-
- boolean selectCurrentTrack = false;
-
- if (mime.startsWith("audio/") && useAudio) {
- selectCurrentTrack = true;
- } else if (mime.startsWith("video/") && useVideo) {
- selectCurrentTrack = true;
- }
-
- if (selectCurrentTrack) {
- extractor.selectTrack(i);
- int dstIndex = muxer.addTrack(format);
- indexMap.put(i, dstIndex);
- if (format.containsKey(MediaFormat.KEY_MAX_INPUT_SIZE)) {
- int newSize = format.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE);
- bufferSize = newSize > bufferSize ? newSize : bufferSize;
- }
- }
- }
-
- if (bufferSize < 0) {
- bufferSize = DEFAULT_BUFFER_SIZE;
- }
-
- // Set up the orientation and starting time for extractor.
- MediaMetadataRetriever retrieverSrc = new MediaMetadataRetriever();
- retrieverSrc.setDataSource(srcPath);
- String degreesString = retrieverSrc.extractMetadata(
- MediaMetadataRetriever.METADATA_KEY_VIDEO_ROTATION);
- if (degreesString != null) {
- int degrees = Integer.parseInt(degreesString);
- if (degrees >= 0) {
- muxer.setOrientationHint(degrees);
- }
- }
-
- if (startMs > 0) {
- extractor.seekTo(startMs * 1000, MediaExtractor.SEEK_TO_CLOSEST_SYNC);
- }
-
- // Copy the samples from MediaExtractor to MediaMuxer. We will loop
- // for copying each sample and stop when we get to the end of the source
- // file or exceed the end time of the trimming.
- int offset = 0;
- int trackIndex = -1;
- ByteBuffer dstBuf = ByteBuffer.allocate(bufferSize);
- BufferInfo bufferInfo = new BufferInfo();
-
- muxer.start();
- while (true) {
- bufferInfo.offset = offset;
- bufferInfo.size = extractor.readSampleData(dstBuf, offset);
- if (bufferInfo.size < 0) {
- Log.d(LOGTAG, "Saw input EOS.");
- bufferInfo.size = 0;
- break;
- } else {
- bufferInfo.presentationTimeUs = extractor.getSampleTime();
- if (endMs > 0 && bufferInfo.presentationTimeUs > (endMs * 1000)) {
- Log.d(LOGTAG, "The current sample is over the trim end time.");
- break;
- } else {
- bufferInfo.flags = extractor.getSampleFlags();
- trackIndex = extractor.getSampleTrackIndex();
-
- muxer.writeSampleData(indexMap.get(trackIndex), dstBuf,
- bufferInfo);
- extractor.advance();
- }
- }
- }
-
- muxer.stop();
- muxer.release();
- return;
- }
-
- private static void trimUsingMp4Parser(File src, File dst, int startMs, int endMs)
- throws FileNotFoundException, IOException {
- RandomAccessFile randomAccessFile = new RandomAccessFile(src, "r");
- Movie movie = MovieCreator.build(randomAccessFile.getChannel());
-
- // remove all tracks we will create new tracks from the old
- List<Track> tracks = movie.getTracks();
- movie.setTracks(new LinkedList<Track>());
-
- double startTime = startMs / 1000;
- double endTime = endMs / 1000;
-
- boolean timeCorrected = false;
-
- // Here we try to find a track that has sync samples. Since we can only
- // start decoding at such a sample we SHOULD make sure that the start of
- // the new fragment is exactly such a frame.
- for (Track track : tracks) {
- if (track.getSyncSamples() != null && track.getSyncSamples().length > 0) {
- if (timeCorrected) {
- // This exception here could be a false positive in case we
- // have multiple tracks with sync samples at exactly the
- // same positions. E.g. a single movie containing multiple
- // qualities of the same video (Microsoft Smooth Streaming
- // file)
- throw new RuntimeException(
- "The startTime has already been corrected by" +
- " another track with SyncSample. Not Supported.");
- }
- startTime = correctTimeToSyncSample(track, startTime, false);
- endTime = correctTimeToSyncSample(track, endTime, true);
- timeCorrected = true;
- }
- }
-
- for (Track track : tracks) {
- long currentSample = 0;
- double currentTime = 0;
- long startSample = -1;
- long endSample = -1;
-
- for (int i = 0; i < track.getDecodingTimeEntries().size(); i++) {
- TimeToSampleBox.Entry entry = track.getDecodingTimeEntries().get(i);
- for (int j = 0; j < entry.getCount(); j++) {
- // entry.getDelta() is the amount of time the current sample
- // covers.
-
- if (currentTime <= startTime) {
- // current sample is still before the new starttime
- startSample = currentSample;
- }
- if (currentTime <= endTime) {
- // current sample is after the new start time and still
- // before the new endtime
- endSample = currentSample;
- } else {
- // current sample is after the end of the cropped video
- break;
- }
- currentTime += (double) entry.getDelta()
- / (double) track.getTrackMetaData().getTimescale();
- currentSample++;
- }
- }
- movie.addTrack(new CroppedTrack(track, startSample, endSample));
- }
- writeMovieIntoFile(dst, movie);
- randomAccessFile.close();
- }
-
- private static double correctTimeToSyncSample(Track track, double cutHere,
- boolean next) {
- double[] timeOfSyncSamples = new double[track.getSyncSamples().length];
- long currentSample = 0;
- double currentTime = 0;
- for (int i = 0; i < track.getDecodingTimeEntries().size(); i++) {
- TimeToSampleBox.Entry entry = track.getDecodingTimeEntries().get(i);
- for (int j = 0; j < entry.getCount(); j++) {
- if (Arrays.binarySearch(track.getSyncSamples(), currentSample + 1) >= 0) {
- // samples always start with 1 but we start with zero
- // therefore +1
- timeOfSyncSamples[Arrays.binarySearch(
- track.getSyncSamples(), currentSample + 1)] = currentTime;
- }
- currentTime += (double) entry.getDelta()
- / (double) track.getTrackMetaData().getTimescale();
- currentSample++;
- }
- }
- double previous = 0;
- for (double timeOfSyncSample : timeOfSyncSamples) {
- if (timeOfSyncSample > cutHere) {
- if (next) {
- return timeOfSyncSample;
- } else {
- return previous;
- }
- }
- previous = timeOfSyncSample;
- }
- return timeOfSyncSamples[timeOfSyncSamples.length - 1];
- }
-
-}