git-svn-id: http://webrtc.googlecode.com/svn/trunk@156 4adac7df-926f-26a2-2b94-8c16560cd09d

2011-07-07 08:21:25 +00:00
parent f0a476bf76
commit 470e71d364
1648 changed files with 544173 additions and 0 deletions
--- a/src/modules/video_coding/main/source/frame_buffer.h
+++ b/src/modules/video_coding/main/source/frame_buffer.h
@ -0,0 +1,95 @@
+/*
+ *  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_FRAME_BUFFER_H_
+#define WEBRTC_MODULES_VIDEO_CODING_FRAME_BUFFER_H_
+
+#include "typedefs.h"
+#include "module_common_types.h"
+
+#include "encoded_frame.h"
+#include "frame_list.h"
+#include "jitter_buffer_common.h"
+#include "session_info.h"
+
+namespace webrtc
+{
+
+class VCMFrameBuffer : public VCMEncodedFrame
+{
+public:
+    VCMFrameBuffer();
+    virtual ~VCMFrameBuffer();
+
+    VCMFrameBuffer(VCMFrameBuffer& rhs);
+
+    virtual void Reset();
+
+    VCMFrameBufferEnum InsertPacket(const VCMPacket& packet, WebRtc_Word64 timeInMs);
+
+    // State
+    // Get current state of frame
+    VCMFrameBufferStateEnum GetState() const;
+    // Get current state and timestamp of frame
+    VCMFrameBufferStateEnum GetState(WebRtc_UWord32& timeStamp) const;
+    void SetState(VCMFrameBufferStateEnum state); // Set state of frame
+
+    bool IsRetransmitted();
+    bool IsSessionComplete();
+    bool HaveLastPacket();
+    bool ForceSetHaveLastPacket();
+    // Makes sure the session contain a decodable stream.
+    void MakeSessionDecodable();
+
+    // Sequence numbers
+    // Get lowest packet sequence number in frame
+    WebRtc_Word32 GetLowSeqNum();
+    // Get highest packet sequence number in frame
+    WebRtc_Word32 GetHighSeqNum();
+
+    // Get highest sequence number of complete session
+    WebRtc_Word32 GetHighSeqNumComplete();
+
+    // Set counted status (as counted by JB or not)
+    void SetCountedFrame(bool frameCounted);
+    bool GetCountedFrame();
+
+    // NACK
+    // Zero out all entries in list up to and including the entry equal to _lowSeqNum
+    WebRtc_Word32 ZeroOutSeqNum(WebRtc_Word32* list, WebRtc_Word32 num);
+    // Hybrid extension: only NACK important packets, discard FEC packets
+    WebRtc_Word32 ZeroOutSeqNumHybrid(WebRtc_Word32* list,
+                                      WebRtc_Word32 num,
+                                      float rttScore);
+    void IncrementNackCount();
+    WebRtc_Word16 GetNackCount() const;
+
+    WebRtc_Word64 LatestPacketTimeMs();
+
+    webrtc::FrameType FrameType() const;
+    void SetPreviousFrameLoss();
+
+    WebRtc_Word32 ExtractFromStorage(const EncodedVideoData& frameFromStorage);
+
+protected:
+    void RestructureFrameInformation();
+    void PrepareForDecode();
+
+private:
+    VCMFrameBufferStateEnum    _state;         // Current state of the frame
+    bool                       _frameCounted;  // If this frame has been counted by JB
+    VCMSessionInfo             _sessionInfo;
+    WebRtc_UWord16             _nackCount;
+    WebRtc_Word64              _latestPacketTimeMs;
+};
+
+} // namespace webrtc
+
+#endif // WEBRTC_MODULES_VIDEO_CODING_FRAME_BUFFER_H_