diff options
Diffstat (limited to 'isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/CroppedTrack.java.svn-base')
| -rw-r--r-- | isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/CroppedTrack.java.svn-base | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/CroppedTrack.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/CroppedTrack.java.svn-base deleted file mode 100644 index 2389961..0000000 --- a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/CroppedTrack.java.svn-base +++ /dev/null @@ -1,151 +0,0 @@ -/* - * Copyright 2012 Sebastian Annies, Hamburg - * - * 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.googlecode.mp4parser.authoring.tracks; - -import com.coremedia.iso.boxes.*; -import com.googlecode.mp4parser.authoring.AbstractTrack; -import com.googlecode.mp4parser.authoring.Track; -import com.googlecode.mp4parser.authoring.TrackMetaData; - -import java.nio.ByteBuffer; -import java.util.LinkedList; -import java.util.List; - -/** - * Generates a Track that starts at fromSample and ends at toSample (exclusive). The user of this class - * has to make sure that the fromSample is a random access sample. - * <ul> - * <li>In AAC this is every single sample</li> - * <li>In H264 this is every sample that is marked in the SyncSampleBox</li> - * </ul> - */ -public class CroppedTrack extends AbstractTrack { - Track origTrack; - private int fromSample; - private int toSample; - private long[] syncSampleArray; - - public CroppedTrack(Track origTrack, long fromSample, long toSample) { - this.origTrack = origTrack; - assert fromSample <= Integer.MAX_VALUE; - assert toSample <= Integer.MAX_VALUE; - this.fromSample = (int) fromSample; - this.toSample = (int) toSample; - } - - public List<ByteBuffer> getSamples() { - return origTrack.getSamples().subList(fromSample, toSample); - } - - public SampleDescriptionBox getSampleDescriptionBox() { - return origTrack.getSampleDescriptionBox(); - } - - public List<TimeToSampleBox.Entry> getDecodingTimeEntries() { - if (origTrack.getDecodingTimeEntries() != null && !origTrack.getDecodingTimeEntries().isEmpty()) { - // todo optimize! too much long is allocated but then not used - long[] decodingTimes = TimeToSampleBox.blowupTimeToSamples(origTrack.getDecodingTimeEntries()); - long[] nuDecodingTimes = new long[toSample - fromSample]; - System.arraycopy(decodingTimes, fromSample, nuDecodingTimes, 0, toSample - fromSample); - - LinkedList<TimeToSampleBox.Entry> returnDecodingEntries = new LinkedList<TimeToSampleBox.Entry>(); - - for (long nuDecodingTime : nuDecodingTimes) { - if (returnDecodingEntries.isEmpty() || returnDecodingEntries.getLast().getDelta() != nuDecodingTime) { - TimeToSampleBox.Entry e = new TimeToSampleBox.Entry(1, nuDecodingTime); - returnDecodingEntries.add(e); - } else { - TimeToSampleBox.Entry e = returnDecodingEntries.getLast(); - e.setCount(e.getCount() + 1); - } - } - return returnDecodingEntries; - } else { - return null; - } - } - - public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() { - if (origTrack.getCompositionTimeEntries() != null && !origTrack.getCompositionTimeEntries().isEmpty()) { - int[] compositionTime = CompositionTimeToSample.blowupCompositionTimes(origTrack.getCompositionTimeEntries()); - int[] nuCompositionTimes = new int[toSample - fromSample]; - System.arraycopy(compositionTime, fromSample, nuCompositionTimes, 0, toSample - fromSample); - - LinkedList<CompositionTimeToSample.Entry> returnDecodingEntries = new LinkedList<CompositionTimeToSample.Entry>(); - - for (int nuDecodingTime : nuCompositionTimes) { - if (returnDecodingEntries.isEmpty() || returnDecodingEntries.getLast().getOffset() != nuDecodingTime) { - CompositionTimeToSample.Entry e = new CompositionTimeToSample.Entry(1, nuDecodingTime); - returnDecodingEntries.add(e); - } else { - CompositionTimeToSample.Entry e = returnDecodingEntries.getLast(); - e.setCount(e.getCount() + 1); - } - } - return returnDecodingEntries; - } else { - return null; - } - } - - synchronized public long[] getSyncSamples() { - if (this.syncSampleArray == null) { - if (origTrack.getSyncSamples() != null && origTrack.getSyncSamples().length > 0) { - List<Long> syncSamples = new LinkedList<Long>(); - for (long l : origTrack.getSyncSamples()) { - if (l >= fromSample && l < toSample) { - syncSamples.add(l - fromSample); - } - } - syncSampleArray = new long[syncSamples.size()]; - for (int i = 0; i < syncSampleArray.length; i++) { - syncSampleArray[i] = syncSamples.get(i); - - } - return syncSampleArray; - } else { - return null; - } - } else { - return this.syncSampleArray; - } - } - - public List<SampleDependencyTypeBox.Entry> getSampleDependencies() { - if (origTrack.getSampleDependencies() != null && !origTrack.getSampleDependencies().isEmpty()) { - return origTrack.getSampleDependencies().subList(fromSample, toSample); - } else { - return null; - } - } - - public TrackMetaData getTrackMetaData() { - return origTrack.getTrackMetaData(); - } - - public String getHandler() { - return origTrack.getHandler(); - } - - public Box getMediaHeaderBox() { - return origTrack.getMediaHeaderBox(); - } - - public SubSampleInformationBox getSubsampleInformationBox() { - return origTrack.getSubsampleInformationBox(); - } - -}
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