| /* ------------------------------------------------------------------ |
| * Copyright (C) 2008 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| |
| #include "time_comparison_utils.h" |
| #include "media_clock_converter.h" |
| |
| |
| OSCL_EXPORT_REF bool IsEarlier(uint32 aTimeA, uint32 aTimeB, uint32& delta) |
| { |
| delta = aTimeB - aTimeA; |
| if (delta < WRAP_THRESHOLD) |
| return true; |
| delta = 0 - delta; |
| return false; |
| } |
| |
| OSCL_EXPORT_REF MediaTimeStatus CheckTimeWindow(PVMFTimestamp aTimeStamp, uint32 aClock, |
| uint32 aEarlyMargin, uint32 aLateMargin, uint32 &aDelta) |
| { |
| if (IsEarlier(aClock, aTimeStamp, aDelta)) |
| { |
| if (aDelta < aEarlyMargin) |
| return MEDIA_EARLY_WITHIN_WINDOW; |
| else |
| return MEDIA_EARLY_OUTSIDE_WINDOW; |
| } |
| else if (aDelta < aLateMargin) |
| { |
| return MEDIA_LATE_WITHIN_WINDOW; |
| } |
| |
| return MEDIA_LATE_OUTSIDE_WINDOW; |
| } |
