Packet buffer for the new jitter buffer.

BUG=webrtc:5514
R=stefan@webrtc.org, mflodman@webrtc.org

Review URL: https://codereview.webrtc.org/1772383002

Cr-Commit-Position: refs/heads/master@{#12194}
diff --git a/webrtc/modules/video_coding/frame_object.h b/webrtc/modules/video_coding/frame_object.h
new file mode 100644
index 0000000..2a68293
--- /dev/null
+++ b/webrtc/modules/video_coding/frame_object.h
@@ -0,0 +1,50 @@
+/*
+ *  Copyright (c) 2016 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_FRAME_OBJECT_H_
+#define WEBRTC_MODULES_VIDEO_CODING_FRAME_OBJECT_H_
+
+#include "webrtc/modules/video_coding/packet.h"
+
+namespace webrtc {
+namespace video_coding {
+
+class FrameObject {
+ public:
+  virtual uint16_t picture_id() const = 0;
+  virtual bool GetBitstream(uint8_t* destination) const = 0;
+  virtual ~FrameObject() {}
+};
+
+class PacketBuffer;
+
+class RtpFrameObject : public FrameObject {
+ public:
+  RtpFrameObject(PacketBuffer* packet_buffer,
+                 uint16_t picture_id,
+                 uint16_t first_packet,
+                 uint16_t last_packet);
+  ~RtpFrameObject();
+  uint16_t first_packet() const;
+  uint16_t last_packet() const;
+  uint16_t picture_id() const override;
+  bool GetBitstream(uint8_t* destination) const override;
+
+ private:
+  PacketBuffer* packet_buffer_;
+  uint16_t picture_id_;
+  uint16_t first_packet_;
+  uint16_t last_packet_;
+};
+
+}  // namespace video_coding
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_VIDEO_CODING_FRAME_OBJECT_H_