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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 "ARTSPController.h"
     18 
     19 #include "MyHandler.h"
     20 
     21 #include <media/stagefright/foundation/ADebug.h>
     22 #include <media/stagefright/MediaErrors.h>
     23 #include <media/stagefright/MediaSource.h>
     24 #include <media/stagefright/MetaData.h>
     25 
     26 namespace android {
     27 
     28 ARTSPController::ARTSPController(const sp<ALooper> &looper)
     29     : mState(DISCONNECTED),
     30       mLooper(looper),
     31       mSeekDoneCb(NULL),
     32       mSeekDoneCookie(NULL),
     33       mLastSeekCompletedTimeUs(-1) {
     34     mReflector = new AHandlerReflector<ARTSPController>(this);
     35     looper->registerHandler(mReflector);
     36 }
     37 
     38 ARTSPController::~ARTSPController() {
     39     CHECK_EQ((int)mState, (int)DISCONNECTED);
     40     mLooper->unregisterHandler(mReflector->id());
     41 }
     42 
     43 status_t ARTSPController::connect(const char *url) {
     44     Mutex::Autolock autoLock(mLock);
     45 
     46     if (mState != DISCONNECTED) {
     47         return ERROR_ALREADY_CONNECTED;
     48     }
     49 
     50     sp<AMessage> msg = new AMessage(kWhatConnectDone, mReflector->id());
     51 
     52     mHandler = new MyHandler(url, mLooper);
     53 
     54     mState = CONNECTING;
     55 
     56     mHandler->connect(msg);
     57 
     58     while (mState == CONNECTING) {
     59         mCondition.wait(mLock);
     60     }
     61 
     62     if (mState != CONNECTED) {
     63         mHandler.clear();
     64     }
     65 
     66     return mConnectionResult;
     67 }
     68 
     69 void ARTSPController::disconnect() {
     70     Mutex::Autolock autoLock(mLock);
     71 
     72     if (mState != CONNECTED) {
     73         return;
     74     }
     75 
     76     sp<AMessage> msg = new AMessage(kWhatDisconnectDone, mReflector->id());
     77     mHandler->disconnect(msg);
     78 
     79     while (mState == CONNECTED) {
     80         mCondition.wait(mLock);
     81     }
     82 
     83     mHandler.clear();
     84 }
     85 
     86 void ARTSPController::seekAsync(
     87         int64_t timeUs,
     88         void (*seekDoneCb)(void *), void *cookie) {
     89     Mutex::Autolock autoLock(mLock);
     90 
     91     CHECK(seekDoneCb != NULL);
     92     CHECK(mSeekDoneCb == NULL);
     93 
     94     // Ignore seek requests that are too soon after the previous one has
     95     // completed, we don't want to swamp the server.
     96 
     97     bool tooEarly =
     98         mLastSeekCompletedTimeUs >= 0
     99             && ALooper::GetNowUs() < mLastSeekCompletedTimeUs + 500000ll;
    100 
    101     if (mState != CONNECTED || tooEarly) {
    102         (*seekDoneCb)(cookie);
    103         return;
    104     }
    105 
    106     mSeekDoneCb = seekDoneCb;
    107     mSeekDoneCookie = cookie;
    108 
    109     sp<AMessage> msg = new AMessage(kWhatSeekDone, mReflector->id());
    110     mHandler->seek(timeUs, msg);
    111 }
    112 
    113 size_t ARTSPController::countTracks() {
    114     if (mHandler == NULL) {
    115         return 0;
    116     }
    117 
    118     return mHandler->countTracks();
    119 }
    120 
    121 sp<MediaSource> ARTSPController::getTrack(size_t index) {
    122     CHECK(mHandler != NULL);
    123 
    124     return mHandler->getPacketSource(index);
    125 }
    126 
    127 sp<MetaData> ARTSPController::getTrackMetaData(
    128         size_t index, uint32_t flags) {
    129     CHECK(mHandler != NULL);
    130 
    131     return mHandler->getPacketSource(index)->getFormat();
    132 }
    133 
    134 void ARTSPController::onMessageReceived(const sp<AMessage> &msg) {
    135     switch (msg->what()) {
    136         case kWhatConnectDone:
    137         {
    138             Mutex::Autolock autoLock(mLock);
    139 
    140             CHECK(msg->findInt32("result", &mConnectionResult));
    141             mState = (mConnectionResult == OK) ? CONNECTED : DISCONNECTED;
    142 
    143             mCondition.signal();
    144             break;
    145         }
    146 
    147         case kWhatDisconnectDone:
    148         {
    149             Mutex::Autolock autoLock(mLock);
    150             mState = DISCONNECTED;
    151             mCondition.signal();
    152             break;
    153         }
    154 
    155         case kWhatSeekDone:
    156         {
    157             LOGI("seek done");
    158 
    159             mLastSeekCompletedTimeUs = ALooper::GetNowUs();
    160 
    161             void (*seekDoneCb)(void *) = mSeekDoneCb;
    162             mSeekDoneCb = NULL;
    163 
    164             (*seekDoneCb)(mSeekDoneCookie);
    165             break;
    166         }
    167 
    168         default:
    169             TRESPASS();
    170             break;
    171     }
    172 }
    173 
    174 int64_t ARTSPController::getNormalPlayTimeUs() {
    175     CHECK(mHandler != NULL);
    176     return mHandler->getNormalPlayTimeUs();
    177 }
    178 
    179 int64_t ARTSPController::getQueueDurationUs(bool *eos) {
    180     *eos = true;
    181 
    182     int64_t minQueuedDurationUs = 0;
    183     for (size_t i = 0; i < mHandler->countTracks(); ++i) {
    184         sp<APacketSource> source = mHandler->getPacketSource(i);
    185 
    186         bool newEOS;
    187         int64_t queuedDurationUs = source->getQueueDurationUs(&newEOS);
    188 
    189         if (!newEOS) {
    190             *eos = false;
    191         }
    192 
    193         if (i == 0 || queuedDurationUs < minQueuedDurationUs) {
    194             minQueuedDurationUs = queuedDurationUs;
    195         }
    196     }
    197 
    198     return minQueuedDurationUs;
    199 }
    200 
    201 }  // namespace android
    202