commit bc7e2ca9d4777f5bfcba585c47e8d0f15e2dfe69
author Ranjith Kagathi Ananda <ranjith@codeaurora.org> Thu Jul 14 19:11:49 2016 +0800
committer gitbuildkicker <android-build@google.com> Thu Jul 21 16:17:28 2016 -0700
tree 8cbd619ff09a1f9f93c15589d3bbedac93d58cf3
parent 7fecf8ad27e41fc1ccfc586bac8ffe1c66016873

QCamera2: HAL3: correct timestamp calculation in HFR mode

When the phone powers up for several days,
the timestamp (in ns, nano sec) of frames will exceed the
precision of float data type.

It will lead to incorrect timestamp calculation in
HFR batch mode. Use double instead

Ack-by: Gaoxiang Chen

BUG=24842044

Change-Id: I63598e56178b980fa817c1c77f77f0e6a005767b
(cherry picked from commit ece15b4fa7cc4c622e41cc9a4cd28187ae584e9e)

camera/QCamera2/HAL3/QCamera3HWI.cpp

diff --git a/camera/QCamera2/HAL3/QCamera3HWI.cpp b/camera/QCamera2/HAL3/QCamera3HWI.cpp
index 59ef87b..490cd2e 100644
--- a/camera/QCamera2/HAL3/QCamera3HWI.cpp
+++ b/camera/QCamera2/HAL3/QCamera3HWI.cpp
@@ -2379,9 +2379,9 @@
             if (last_frame_capture_time) {
                 //Infer timestamp
                 first_frame_capture_time = last_frame_capture_time -
-                        (((loopCount - 1) * NSEC_PER_SEC) / mHFRVideoFps);
+                        (((loopCount - 1) * NSEC_PER_SEC) / (double) mHFRVideoFps);
                 capture_time =
-                        first_frame_capture_time + (i * NSEC_PER_SEC / mHFRVideoFps);
+                        first_frame_capture_time + (i * NSEC_PER_SEC / (double) mHFRVideoFps);
                 ADD_SET_PARAM_ENTRY_TO_BATCH(metadata,
                         CAM_INTF_META_SENSOR_TIMESTAMP, capture_time);
                 CDBG("%s: batch capture_time: %lld, capture_time: %lld",