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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "ARTPAssembler.h"
     18 
     19 #include <media/stagefright/foundation/ABuffer.h>
     20 #include <media/stagefright/foundation/ADebug.h>
     21 #include <media/stagefright/foundation/AMessage.h>
     22 
     23 #include <stdint.h>
     24 
     25 namespace android {
     26 
     27 static int64_t getNowUs() {
     28     struct timeval tv;
     29     gettimeofday(&tv, NULL);
     30 
     31     return (int64_t)tv.tv_usec + tv.tv_sec * 1000000ll;
     32 }
     33 
     34 ARTPAssembler::ARTPAssembler()
     35     : mFirstFailureTimeUs(-1) {
     36 }
     37 
     38 void ARTPAssembler::onPacketReceived(const sp<ARTPSource> &source) {
     39     AssemblyStatus status;
     40     for (;;) {
     41         status = assembleMore(source);
     42 
     43         if (status == WRONG_SEQUENCE_NUMBER) {
     44             if (mFirstFailureTimeUs >= 0) {
     45                 if (getNowUs() - mFirstFailureTimeUs > 10000ll) {
     46                     mFirstFailureTimeUs = -1;
     47 
     48                     // LOG(VERBOSE) << "waited too long for packet.";
     49                     packetLost();
     50                     continue;
     51                 }
     52             } else {
     53                 mFirstFailureTimeUs = getNowUs();
     54             }
     55             break;
     56         } else {
     57             mFirstFailureTimeUs = -1;
     58 
     59             if (status == NOT_ENOUGH_DATA) {
     60                 break;
     61             }
     62         }
     63     }
     64 }
     65 
     66 // static
     67 void ARTPAssembler::CopyTimes(const sp<ABuffer> &to, const sp<ABuffer> &from) {
     68     uint64_t ntpTime;
     69     CHECK(from->meta()->findInt64("ntp-time", (int64_t *)&ntpTime));
     70 
     71     uint32_t rtpTime;
     72     CHECK(from->meta()->findInt32("rtp-time", (int32_t *)&rtpTime));
     73 
     74     to->meta()->setInt64("ntp-time", ntpTime);
     75     to->meta()->setInt32("rtp-time", rtpTime);
     76 
     77     // Copy the seq number.
     78     to->setInt32Data(from->int32Data());
     79 }
     80 
     81 }  // namespace android
     82