Initial drop the compilable version of mp4parser, with least modification

bug:7093055

Change-Id: Id9b1b4ec91e26ae6e9fd75d86696aa30f30897b3

1 files changed, 91 insertions, 0 deletions

diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/Movie.java b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/Movie.java
new file mode 100644
index 0000000..0658682
--- /dev/null
+++ b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/Movie.java
@@ -0,0 +1,91 @@
+/*
+ * 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;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ *
+ */
+public class Movie {
+    List<Track> tracks = new LinkedList<Track>();
+
+    public List<Track> getTracks() {
+        return tracks;
+    }
+
+    public void setTracks(List<Track> tracks) {
+        this.tracks = tracks;
+    }
+
+    public void addTrack(Track nuTrack) {
+        // do some checking
+        // perhaps the movie needs to get longer!
+        if (getTrackByTrackId(nuTrack.getTrackMetaData().getTrackId()) != null) {
+            // We already have a track with that trackId. Create a new one
+            nuTrack.getTrackMetaData().setTrackId(getNextTrackId());
+        }
+        tracks.add(nuTrack);
+    }
+
+
+    @Override
+    public String toString() {
+        String s = "Movie{ ";
+        for (Track track : tracks) {
+            s += "track_" + track.getTrackMetaData().getTrackId() + " (" + track.getHandler() + ") ";
+        }
+
+        s += '}';
+        return s;
+    }
+
+    public long getNextTrackId() {
+        long nextTrackId = 0;
+        for (Track track : tracks) {
+            nextTrackId = nextTrackId < track.getTrackMetaData().getTrackId() ? track.getTrackMetaData().getTrackId() : nextTrackId;
+        }
+        return ++nextTrackId;
+    }
+
+
+    public Track getTrackByTrackId(long trackId) {
+        for (Track track : tracks) {
+            if (track.getTrackMetaData().getTrackId() == trackId) {
+                return track;
+            }
+        }
+        return null;
+    }
+
+
+    public long getTimescale() {
+        long timescale = this.getTracks().iterator().next().getTrackMetaData().getTimescale();
+        for (Track track : this.getTracks()) {
+            timescale = gcd(track.getTrackMetaData().getTimescale(), timescale);
+        }
+        return timescale;
+    }
+
+    public static long gcd(long a, long b) {
+        if (b == 0) {
+            return a;
+        }
+        return gcd(b, a % b);
+    }
+
+}