AudioTrack, AudioRecord: Fix latency computation

Force 64 bit arithmetic to avoid integer overflow on 32 bit
platforms.

Test: CTS AudioTrackTest
Bug: 65536481
Change-Id: I774a7811fce08c7cbe59f0a062fd2c2d72220203

media/libaudioclient/AudioRecord.cpp

@@ -274,7 +274,7 @@ status_t AudioRecord::set(
     mStatus = NO_ERROR;
     mUserData = user;
     // TODO: add audio hardware input latency here
-    mLatency = (1000 * mFrameCount) / mSampleRate;
+    mLatency = (1000LL * mFrameCount) / mSampleRate;
     mMarkerPosition = 0;
     mMarkerReached = false;
     mNewPosition = 0;

media/libaudioclient/AudioTrack.cpp

@@ -1279,7 +1279,7 @@ void AudioTrack::updateLatency_l()
         ALOGW("getLatency(%d) failed status %d", mOutput, status);
     } else {
         // FIXME don't believe this lie
-        mLatency = mAfLatency + (1000 * mFrameCount) / mSampleRate;
+        mLatency = mAfLatency + (1000LL * mFrameCount) / mSampleRate;
     }
 }