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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZILLA_LATENCY_H
#define MOZILLA_LATENCY_H
#include "mozilla/TimeStamp.h"
#include "mozilla/Logging.h"
#include "nsCOMPtr.h"
#include "nsIThread.h"
#include "mozilla/Monitor.h"
#include "nsISupportsImpl.h"
#include "nsIObserver.h"
class AsyncLatencyLogger;
mozilla::LogModule* GetLatencyLog();
// This class is a singleton. It is refcounted.
class AsyncLatencyLogger : public nsIObserver
{
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
public:
enum LatencyLogIndex {
AudioMediaStreamTrack = 0,
VideoMediaStreamTrack,
Cubeb,
AudioStream,
NetEQ,
AudioCaptureBase, // base time for capturing an audio stream
AudioCapture, // records number of samples captured and the time
AudioTrackInsertion, // # of samples inserted into a mediastreamtrack and the time
MediaPipelineAudioInsertion, // Timestamp and time of timestamp
AudioTransmit, // Timestamp and socket send time
AudioReceive, // Timestamp and receive time
MediaPipelineAudioPlayout, // Timestamp and playout into MST time
MediaStreamCreate, // Source and TrackUnion streams
AudioStreamCreate, // TrackUnion stream and AudioStream
AudioSendRTP,
AudioRecvRTP,
_MAX_INDEX
};
// Log with a null timestamp
void Log(LatencyLogIndex index, uint64_t aID, int64_t aValue);
// Log with a timestamp
void Log(LatencyLogIndex index, uint64_t aID, int64_t aValue,
mozilla::TimeStamp &aTime);
// Write a log message to NSPR
void WriteLog(LatencyLogIndex index, uint64_t aID, int64_t aValue,
mozilla::TimeStamp timestamp);
// Get the base time used by the logger for delta calculations
void GetStartTime(mozilla::TimeStamp &aStart);
static AsyncLatencyLogger* Get(bool aStartTimer = false);
static void InitializeStatics();
// After this is called, the global log object may go away
static void ShutdownLogger();
private:
AsyncLatencyLogger();
virtual ~AsyncLatencyLogger();
int64_t GetTimeStamp();
void Init();
// Shut down the thread associated with this, and make sure it doesn't
// start up again.
void Shutdown();
// The thread on which the IO happens
nsCOMPtr<nsIThread> mThread;
// This can be initialized on multiple threads, but is protected by a
// monitor. After the initialization phase, it is accessed on the log
// thread only.
mozilla::TimeStamp mStart;
// This monitor protects mStart and mMediaLatencyLog for the
// initialization sequence. It is initialized at layout startup, and
// destroyed at layout shutdown.
mozilla::Mutex mMutex;
};
// need uint32_t versions for access from webrtc/trunk code
// Log without a time delta
void LogLatency(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue);
void LogLatency(uint32_t index, uint64_t aID, int64_t aValue);
// Log TimeStamp::Now() (as delta)
void LogTime(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue);
void LogTime(uint32_t index, uint64_t aID, int64_t aValue);
// Log the specified time (as delta)
void LogTime(AsyncLatencyLogger::LatencyLogIndex index, uint64_t aID, int64_t aValue,
mozilla::TimeStamp &aTime);
// For generating unique-ish ids for logged sources
#define LATENCY_STREAM_ID(source, trackID) \
((((uint64_t) (source)) & ~0x0F) | (trackID))
#endif
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