1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_ 12 #define WEBRTC_MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_ 13 14 #include "webrtc/typedefs.h" 15 16 namespace webrtc { 17 18 // Used to estimate rolling average of packets per frame. 19 static const float kFastConvergeMultiplier = 0.4f; 20 static const float kNormalConvergeMultiplier = 0.2f; 21 22 enum { kMaxNumberOfFrames = 300 }; 23 enum { kStartNumberOfFrames = 6 }; 24 enum { kMaxVideoDelayMs = 10000 }; 25 enum { kPacketsPerFrameMultiplier = 5 }; 26 enum { kFastConvergeThreshold = 5}; 27 28 enum VCMJitterBufferEnum { 29 kMaxConsecutiveOldFrames = 60, 30 kMaxConsecutiveOldPackets = 300, 31 kMaxPacketsInSession = 800, 32 kBufferIncStepSizeBytes = 30000, // >20 packets. 33 kMaxJBFrameSizeBytes = 4000000 // sanity don't go above 4Mbyte. 34 }; 35 36 enum VCMFrameBufferEnum { 37 kOutOfBoundsPacket = -7, 38 kNotInitialized = -6, 39 kOldPacket = -5, 40 kGeneralError = -4, 41 kFlushIndicator = -3, // Indicator that a flush has occurred. 42 kTimeStampError = -2, 43 kSizeError = -1, 44 kNoError = 0, 45 kIncomplete = 1, // Frame incomplete. 46 kCompleteSession = 3, // at least one layer in the frame complete. 47 kDecodableSession = 4, // Frame incomplete, but ready to be decoded 48 kDuplicatePacket = 5 // We're receiving a duplicate packet. 49 }; 50 51 enum VCMFrameBufferStateEnum { 52 kStateEmpty, // frame popped by the RTP receiver 53 kStateIncomplete, // frame that have one or more packet(s) stored 54 kStateComplete, // frame that have all packets 55 kStateDecodable // Hybrid mode - frame can be decoded 56 }; 57 58 enum { kH264StartCodeLengthBytes = 4}; 59 60 // Used to indicate if a received packet contain a complete NALU (or equivalent) 61 enum VCMNaluCompleteness { 62 kNaluUnset = 0, // Packet has not been filled. 63 kNaluComplete = 1, // Packet can be decoded as is. 64 kNaluStart, // Packet contain beginning of NALU 65 kNaluIncomplete, // Packet is not beginning or end of NALU 66 kNaluEnd, // Packet is the end of a NALU 67 }; 68 } // namespace webrtc 69 70 #endif // WEBRTC_MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_ 71