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

modules/video_coding/main/source/jitter_buffer_common.h

@@ -0,0 +1,66 @@
+/*
+ *  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_JITTER_BUFFER_COMMON_H_
+#define WEBRTC_MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_
+
+namespace webrtc
+{
+
+enum { kMaxNumberOfFrames     = 100 };
+enum { kStartNumberOfFrames   = 6 };    // in packets, 6 packets are approximately 198 ms,
+                                        // we need at least one more for process
+enum { kMaxVideoDelayMs       = 2000 }; // in ms
+
+enum VCMJitterBufferEnum
+{
+    kMaxConsecutiveOldFrames        = 60,
+    kMaxConsecutiveOldPackets       = 300,
+    kMaxPacketsInJitterBuffer       = 800,
+    kBufferIncStepSizeBytes         = 30000,       // >20 packets
+    kMaxJBFrameSizeBytes            = 4000000      // sanity don't go above 4Mbyte
+};
+
+enum VCMFrameBufferEnum
+{
+    kStateError           = -4,
+    kTimeStampError       = -2,
+    kSizeError            = -1,
+    kNoError              = 0,
+    kIncomplete           = 1,    // Frame incomplete
+    kFirstPacket          = 2,
+    kCompleteSession      = 3,    // at least one layer in the frame complete
+    kDuplicatePacket      = 5     // We're receiving a duplicate packet.
+};
+
+enum VCMFrameBufferStateEnum
+{
+    kStateFree,               // Unused frame in the JB
+    kStateEmpty,              // frame popped by the RTP receiver
+    kStateIncomplete,         // frame that have one or more packet(s) stored
+    kStateComplete,           // frame that have all packets
+    kStateDecoding            // frame popped by the decoding thread
+};
+
+enum { kH264StartCodeLengthBytes = 4};
+
+// Used to indicate if a received packet contain a complete NALU (or equivalent)
+enum VCMNaluCompleteness
+{
+    kNaluUnset=0,       //Packet has not been filled.
+    kNaluComplete=1,    //Packet can be decoded as is.
+    kNaluStart,         // Packet contain beginning of NALU
+    kNaluIncomplete,    //Packet is not beginning or end of NALU
+    kNaluEnd            // Packet is the end of a NALU
+};
+
+} // namespace webrtc
+
+#endif // WEBRTC_MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_