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/*
* 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 MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_
#define MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_
#include "typedefs.h" // NOLINT(build/include)
namespace webrtc {
// Used to estimate rolling average of packets per frame.
static const float kFastConvergeMultiplier = 0.4f;
static const float kNormalConvergeMultiplier = 0.2f;
enum { kMaxNumberOfFrames = 300 };
enum { kStartNumberOfFrames = 6 };
enum { kMaxVideoDelayMs = 10000 };
enum { kPacketsPerFrameMultiplier = 5 };
enum { kFastConvergeThreshold = 5 };
enum VCMJitterBufferEnum {
kMaxConsecutiveOldFrames = 60,
kMaxConsecutiveOldPackets = 300,
// TODO(sprang): Reduce this limit once codecs don't sometimes wildly
// overshoot bitrate target.
kMaxPacketsInSession = 1400, // Allows ~2MB frames.
kBufferIncStepSizeBytes = 30000, // >20 packets.
kMaxJBFrameSizeBytes = 4000000, // sanity don't go above 4Mbyte.
kBufferSafetyMargin = 100 // enough for ~50 NALs in a STAP-A
};
enum VCMFrameBufferEnum {
kOutOfBoundsPacket = -7,
kNotInitialized = -6,
kOldPacket = -5,
kGeneralError = -4,
kFlushIndicator = -3, // Indicator that a flush has occurred.
kTimeStampError = -2,
kSizeError = -1,
kNoError = 0,
kIncomplete = 1, // Frame incomplete.
kCompleteSession = 3, // at least one layer in the frame complete.
kDecodableSession = 4, // Frame incomplete, but ready to be decoded
kDuplicatePacket = 5 // We're receiving a duplicate packet.
};
enum VCMFrameBufferStateEnum {
kStateEmpty, // frame popped by the RTP receiver
kStateIncomplete, // frame that have one or more packet(s) stored
kStateComplete, // frame that have all packets
kStateDecodable // Hybrid mode - frame can be decoded
};
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 // MODULES_VIDEO_CODING_JITTER_BUFFER_COMMON_H_
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