1 files changed, 165 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/QuicktimeTextTrackImpl.java b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/QuicktimeTextTrackImpl.java
new file mode 100644
index 0000000..8efa399
--- /dev/null
+++ b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/QuicktimeTextTrackImpl.java
@@ -0,0 +1,165 @@
+/*
+ * 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.coremedia.iso.boxes.sampleentry.TextSampleEntry;
+import com.googlecode.mp4parser.authoring.AbstractTrack;
+import com.googlecode.mp4parser.authoring.TrackMetaData;
+import com.googlecode.mp4parser.boxes.apple.BaseMediaInfoAtom;
+import com.googlecode.mp4parser.boxes.apple.GenericMediaHeaderAtom;
+import com.googlecode.mp4parser.boxes.apple.GenericMediaHeaderTextAtom;
+import com.googlecode.mp4parser.boxes.apple.QuicktimeTextSampleEntry;
+import com.googlecode.mp4parser.boxes.threegpp26245.FontTableBox;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Collections;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * A Text track as Quicktime Pro would create.
+ */
+public class QuicktimeTextTrackImpl extends AbstractTrack {
+    TrackMetaData trackMetaData = new TrackMetaData();
+    SampleDescriptionBox sampleDescriptionBox;
+    List<Line> subs = new LinkedList<Line>();
+
+    public List<Line> getSubs() {
+        return subs;
+    }
+
+    public QuicktimeTextTrackImpl() {
+        sampleDescriptionBox = new SampleDescriptionBox();
+        QuicktimeTextSampleEntry textTrack = new QuicktimeTextSampleEntry();
+        textTrack.setDataReferenceIndex(1);
+        sampleDescriptionBox.addBox(textTrack);
+
+
+        trackMetaData.setCreationTime(new Date());
+        trackMetaData.setModificationTime(new Date());
+        trackMetaData.setTimescale(1000);
+
+
+    }
+
+
+    public List<ByteBuffer> getSamples() {
+        List<ByteBuffer> samples = new LinkedList<ByteBuffer>();
+        long lastEnd = 0;
+        for (Line sub : subs) {
+            long silentTime = sub.from - lastEnd;
+            if (silentTime > 0) {
+                samples.add(ByteBuffer.wrap(new byte[]{0, 0}));
+            } else if (silentTime < 0) {
+                throw new Error("Subtitle display times may not intersect");
+            }
+            ByteArrayOutputStream baos = new ByteArrayOutputStream();
+            DataOutputStream dos = new DataOutputStream(baos);
+            try {
+                dos.writeShort(sub.text.getBytes("UTF-8").length);
+                dos.write(sub.text.getBytes("UTF-8"));
+                dos.close();
+            } catch (IOException e) {
+                throw new Error("VM is broken. Does not support UTF-8");
+            }
+            samples.add(ByteBuffer.wrap(baos.toByteArray()));
+            lastEnd = sub.to;
+        }
+        return samples;
+    }
+
+    public SampleDescriptionBox getSampleDescriptionBox() {
+        return sampleDescriptionBox;
+    }
+
+    public List<TimeToSampleBox.Entry> getDecodingTimeEntries() {
+        List<TimeToSampleBox.Entry> stts = new LinkedList<TimeToSampleBox.Entry>();
+        long lastEnd = 0;
+        for (Line sub : subs) {
+            long silentTime = sub.from - lastEnd;
+            if (silentTime > 0) {
+                stts.add(new TimeToSampleBox.Entry(1, silentTime));
+            } else if (silentTime < 0) {
+                throw new Error("Subtitle display times may not intersect");
+            }
+            stts.add(new TimeToSampleBox.Entry(1, sub.to - sub.from));
+            lastEnd = sub.to;
+        }
+        return stts;
+    }
+
+    public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() {
+        return null;
+    }
+
+    public long[] getSyncSamples() {
+        return null;
+    }
+
+    public List<SampleDependencyTypeBox.Entry> getSampleDependencies() {
+        return null;
+    }
+
+    public TrackMetaData getTrackMetaData() {
+        return trackMetaData;
+    }
+
+    public String getHandler() {
+        return "text";
+    }
+
+
+    public static class Line {
+        long from;
+        long to;
+        String text;
+
+
+        public Line(long from, long to, String text) {
+            this.from = from;
+            this.to = to;
+            this.text = text;
+        }
+
+        public long getFrom() {
+            return from;
+        }
+
+        public String getText() {
+            return text;
+        }
+
+        public long getTo() {
+            return to;
+        }
+    }
+
+    public Box getMediaHeaderBox() {
+        GenericMediaHeaderAtom ghmd = new GenericMediaHeaderAtom();
+        ghmd.addBox(new BaseMediaInfoAtom());
+        ghmd.addBox(new GenericMediaHeaderTextAtom());
+        return ghmd;
+    }
+
+    public SubSampleInformationBox getSubsampleInformationBox() {
+        return null;
+    }
+}