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Commit 879f0910 authored by Ytai Ben-Tsvi's avatar Ytai Ben-Tsvi
Browse files

Print timestamp lag in SensorPoseProvider-example 

This is useful for assessing timestamp accuracy and latency.

Test: Invocation of the example.
Bug: 188502620
Change-Id: I685bc568ee4174157411cfe26628d0ef7b4f065a
parent 8b6fe3a4

media/libheadtracking/Android.bp

+1 −0
Original line number Diff line number Diff line
@@ -57,6 +57,7 @@ cc_binary { 
        "libheadtracking",

        "libheadtracking-binding",

        "libsensor",

        "libutils",

    ],

}

media/libheadtracking/SensorPoseProvider-example.cpp

+8 −1
Original line number Diff line number Diff line
@@ -19,9 +19,11 @@ 


#include <android/sensor.h>

#include <hardware/sensors.h>

#include <utils/SystemClock.h>



#include <media/SensorPoseProvider.h>



using android::elapsedRealtimeNano;

using android::media::Pose3f;

using android::media::SensorPoseProvider;

using android::media::Twist3f;
@@ -32,7 +34,12 @@ class Listener : public SensorPoseProvider::Listener { 
  public:

    void onPose(int64_t timestamp, int32_t handle, const Pose3f& pose,

                const std::optional<Twist3f>& twist) override {

        std::cout << "onPose t=" << timestamp << " sensor=" << handle << " pose=" << pose

        int64_t now = elapsedRealtimeNano();



        std::cout << "onPose t=" << timestamp

                  << " lag=" << ((now - timestamp) / 1e6) << "[ms]"

                  << " sensor=" << handle

                  << " pose=" << pose

                  << " twist=";

        if (twist.has_value()) {

            std::cout << twist.value();