1 files changed, 47 insertions, 0 deletions
diff --git a/webrtc/modules/video_coding/timestamp_map.h b/webrtc/modules/video_coding/timestamp_map.h
new file mode 100644
index 0000000000..435d05895c
--- /dev/null
+++ b/webrtc/modules/video_coding/timestamp_map.h
@@ -0,0 +1,47 @@
+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_VIDEO_CODING_TIMESTAMP_MAP_H_
+#define WEBRTC_MODULES_VIDEO_CODING_TIMESTAMP_MAP_H_
+
+#include "webrtc/base/scoped_ptr.h"
+#include "webrtc/typedefs.h"
+
+namespace webrtc {
+
+struct VCMFrameInformation;
+
+class VCMTimestampMap {
+ public:
+  explicit VCMTimestampMap(size_t capacity);
+  ~VCMTimestampMap();
+
+  // Empty the map.
+  void Reset();
+
+  void Add(uint32_t timestamp, VCMFrameInformation* data);
+  VCMFrameInformation* Pop(uint32_t timestamp);
+
+ private:
+  struct TimestampDataTuple {
+    uint32_t timestamp;
+    VCMFrameInformation* data;
+  };
+  bool IsEmpty() const;
+
+  rtc::scoped_ptr<TimestampDataTuple[]> ring_buffer_;
+  const size_t capacity_;
+  size_t next_add_idx_;
+  size_t next_pop_idx_;
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_CODING_TIMESTAMP_MAP_H_