1 files changed, 65 insertions, 0 deletions
diff --git a/chromium/media/formats/webm/cluster_builder.h b/chromium/media/formats/webm/cluster_builder.h
new file mode 100644
index 00000000000..ab5797cd34a
--- /dev/null
+++ b/chromium/media/formats/webm/cluster_builder.h
@@ -0,0 +1,65 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_FORMATS_WEBM_CLUSTER_BUILDER_H_
+#define MEDIA_FORMATS_WEBM_CLUSTER_BUILDER_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/base/buffers.h"
+
+namespace media {
+
+class Cluster {
+ public:
+  Cluster(scoped_ptr<uint8[]> data, int size);
+  ~Cluster();
+
+  const uint8* data() const { return data_.get(); }
+  int size() const { return size_; }
+
+ private:
+  scoped_ptr<uint8[]> data_;
+  int size_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Cluster);
+};
+
+class ClusterBuilder {
+ public:
+  ClusterBuilder();
+  ~ClusterBuilder();
+
+  void SetClusterTimecode(int64 cluster_timecode);
+  void AddSimpleBlock(int track_num, int64 timecode, int flags,
+                      const uint8* data, int size);
+  void AddBlockGroup(int track_num, int64 timecode, int duration, int flags,
+                     const uint8* data, int size);
+  void AddBlockGroupWithoutBlockDuration(int track_num, int64 timecode,
+                     int flags, const uint8* data, int size);
+
+  scoped_ptr<Cluster> Finish();
+  scoped_ptr<Cluster> FinishWithUnknownSize();
+
+ private:
+  void AddBlockGroupInternal(int track_num, int64 timecode,
+                             bool include_block_duration, int duration,
+                             int flags, const uint8* data, int size);
+  void Reset();
+  void ExtendBuffer(int bytes_needed);
+  void UpdateUInt64(int offset, int64 value);
+  void WriteBlock(uint8* buf, int track_num, int64 timecode, int flags,
+                  const uint8* data, int size);
+
+  scoped_ptr<uint8[]> buffer_;
+  int buffer_size_;
+  int bytes_used_;
+  int64 cluster_timecode_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClusterBuilder);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_FORMATS_WEBM_CLUSTER_BUILDER_H_