RTSPSource.cpp revision 7e074a8b7548ac769d1f55addacd97f885651b0d 
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//#define LOG_NDEBUG 0
18#define LOG_TAG "RTSPSource"
19#include <utils/Log.h>
20
21#include "RTSPSource.h"
22
23#include "AnotherPacketSource.h"
24#include "MyHandler.h"
25#include "SDPLoader.h"
26
27#include <media/IMediaHTTPService.h>
28#include <media/stagefright/MediaDefs.h>
29#include <media/stagefright/MetaData.h>
30
31namespace android {
32
33const int64_t kNearEOSTimeoutUs = 2000000ll; // 2 secs
34
35// Buffer Underflow/Prepare/StartServer/Overflow Marks
36const int64_t NuPlayer::RTSPSource::kUnderflowMarkUs   =  1000000ll;
37const int64_t NuPlayer::RTSPSource::kPrepareMarkUs     =  3000000ll;
38const int64_t NuPlayer::RTSPSource::kStartServerMarkUs =  5000000ll;
39const int64_t NuPlayer::RTSPSource::kOverflowMarkUs    = 10000000ll;
40
41NuPlayer::RTSPSource::RTSPSource(
42        const sp<AMessage> &notify,
43        const sp<IMediaHTTPService> &httpService,
44        const char *url,
45        const KeyedVector<String8, String8> *headers,
46        bool uidValid,
47        uid_t uid,
48        bool isSDP)
49    : Source(notify),
50      mHTTPService(httpService),
51      mURL(url),
52      mUIDValid(uidValid),
53      mUID(uid),
54      mFlags(0),
55      mIsSDP(isSDP),
56      mState(DISCONNECTED),
57      mFinalResult(OK),
58      mDisconnectReplyID(0),
59      mBuffering(false),
60      mInPreparationPhase(true),
61      mEOSPending(false),
62      mSeekGeneration(0),
63      mEOSTimeoutAudio(0),
64      mEOSTimeoutVideo(0) {
65    if (headers) {
66        mExtraHeaders = *headers;
67
68        ssize_t index =
69            mExtraHeaders.indexOfKey(String8("x-hide-urls-from-log"));
70
71        if (index >= 0) {
72            mFlags |= kFlagIncognito;
73
74            mExtraHeaders.removeItemsAt(index);
75        }
76    }
77}
78
79NuPlayer::RTSPSource::~RTSPSource() {
80    if (mLooper != NULL) {
81        mLooper->unregisterHandler(id());
82        mLooper->stop();
83    }
84}
85
86void NuPlayer::RTSPSource::prepareAsync() {
87    if (mIsSDP && mHTTPService == NULL) {
88        notifyPrepared(BAD_VALUE);
89        return;
90    }
91
92    if (mLooper == NULL) {
93        mLooper = new ALooper;
94        mLooper->setName("rtsp");
95        mLooper->start();
96
97        mLooper->registerHandler(this);
98    }
99
100    CHECK(mHandler == NULL);
101    CHECK(mSDPLoader == NULL);
102
103    sp<AMessage> notify = new AMessage(kWhatNotify, this);
104
105    CHECK_EQ(mState, (int)DISCONNECTED);
106    mState = CONNECTING;
107
108    if (mIsSDP) {
109        mSDPLoader = new SDPLoader(notify,
110                (mFlags & kFlagIncognito) ? SDPLoader::kFlagIncognito : 0,
111                mHTTPService);
112
113        mSDPLoader->load(
114                mURL.c_str(), mExtraHeaders.isEmpty() ? NULL : &mExtraHeaders);
115    } else {
116        mHandler = new MyHandler(mURL.c_str(), notify, mUIDValid, mUID);
117        mLooper->registerHandler(mHandler);
118
119        mHandler->connect();
120    }
121
122    startBufferingIfNecessary();
123}
124
125void NuPlayer::RTSPSource::start() {
126}
127
128void NuPlayer::RTSPSource::stop() {
129    if (mLooper == NULL) {
130        return;
131    }
132    sp<AMessage> msg = new AMessage(kWhatDisconnect, this);
133
134    sp<AMessage> dummy;
135    msg->postAndAwaitResponse(&dummy);
136}
137
138status_t NuPlayer::RTSPSource::feedMoreTSData() {
139    Mutex::Autolock _l(mBufferingLock);
140    return mFinalResult;
141}
142
143sp<MetaData> NuPlayer::RTSPSource::getFormatMeta(bool audio) {
144    sp<AnotherPacketSource> source = getSource(audio);
145
146    if (source == NULL) {
147        return NULL;
148    }
149
150    return source->getFormat();
151}
152
153bool NuPlayer::RTSPSource::haveSufficientDataOnAllTracks() {
154    // We're going to buffer at least 2 secs worth data on all tracks before
155    // starting playback (both at startup and after a seek).
156
157    static const int64_t kMinDurationUs = 2000000ll;
158
159    int64_t mediaDurationUs = 0;
160    getDuration(&mediaDurationUs);
161    if ((mAudioTrack != NULL && mAudioTrack->isFinished(mediaDurationUs))
162            || (mVideoTrack != NULL && mVideoTrack->isFinished(mediaDurationUs))) {
163        return true;
164    }
165
166    status_t err;
167    int64_t durationUs;
168    if (mAudioTrack != NULL
169            && (durationUs = mAudioTrack->getBufferedDurationUs(&err))
170                    < kMinDurationUs
171            && err == OK) {
172        ALOGV("audio track doesn't have enough data yet. (%.2f secs buffered)",
173              durationUs / 1E6);
174        return false;
175    }
176
177    if (mVideoTrack != NULL
178            && (durationUs = mVideoTrack->getBufferedDurationUs(&err))
179                    < kMinDurationUs
180            && err == OK) {
181        ALOGV("video track doesn't have enough data yet. (%.2f secs buffered)",
182              durationUs / 1E6);
183        return false;
184    }
185
186    return true;
187}
188
189status_t NuPlayer::RTSPSource::dequeueAccessUnit(
190        bool audio, sp<ABuffer> *accessUnit) {
191    if (!stopBufferingIfNecessary()) {
192        return -EWOULDBLOCK;
193    }
194
195    sp<AnotherPacketSource> source = getSource(audio);
196
197    if (source == NULL) {
198        return -EWOULDBLOCK;
199    }
200
201    status_t finalResult;
202    if (!source->hasBufferAvailable(&finalResult)) {
203        if (finalResult == OK) {
204
205            // If other source already signaled EOS, this source should also return EOS
206            if (sourceReachedEOS(!audio)) {
207                return ERROR_END_OF_STREAM;
208            }
209
210            // If this source has detected near end, give it some time to retrieve more
211            // data before returning EOS
212            int64_t mediaDurationUs = 0;
213            getDuration(&mediaDurationUs);
214            if (source->isFinished(mediaDurationUs)) {
215                int64_t eosTimeout = audio ? mEOSTimeoutAudio : mEOSTimeoutVideo;
216                if (eosTimeout == 0) {
217                    setEOSTimeout(audio, ALooper::GetNowUs());
218                } else if ((ALooper::GetNowUs() - eosTimeout) > kNearEOSTimeoutUs) {
219                    setEOSTimeout(audio, 0);
220                    return ERROR_END_OF_STREAM;
221                }
222                return -EWOULDBLOCK;
223            }
224
225            if (!sourceNearEOS(!audio)) {
226                // We should not enter buffering mode
227                // if any of the sources already have detected EOS.
228                startBufferingIfNecessary();
229            }
230
231            return -EWOULDBLOCK;
232        }
233        return finalResult;
234    }
235
236    setEOSTimeout(audio, 0);
237
238    return source->dequeueAccessUnit(accessUnit);
239}
240
241sp<AnotherPacketSource> NuPlayer::RTSPSource::getSource(bool audio) {
242    if (mTSParser != NULL) {
243        sp<MediaSource> source = mTSParser->getSource(
244                audio ? ATSParser::AUDIO : ATSParser::VIDEO);
245
246        return static_cast<AnotherPacketSource *>(source.get());
247    }
248
249    return audio ? mAudioTrack : mVideoTrack;
250}
251
252void NuPlayer::RTSPSource::setEOSTimeout(bool audio, int64_t timeout) {
253    if (audio) {
254        mEOSTimeoutAudio = timeout;
255    } else {
256        mEOSTimeoutVideo = timeout;
257    }
258}
259
260status_t NuPlayer::RTSPSource::getDuration(int64_t *durationUs) {
261    *durationUs = -1ll;
262
263    int64_t audioDurationUs;
264    if (mAudioTrack != NULL
265            && mAudioTrack->getFormat()->findInt64(
266                kKeyDuration, &audioDurationUs)
267            && audioDurationUs > *durationUs) {
268        *durationUs = audioDurationUs;
269    }
270
271    int64_t videoDurationUs;
272    if (mVideoTrack != NULL
273            && mVideoTrack->getFormat()->findInt64(
274                kKeyDuration, &videoDurationUs)
275            && videoDurationUs > *durationUs) {
276        *durationUs = videoDurationUs;
277    }
278
279    return OK;
280}
281
282status_t NuPlayer::RTSPSource::seekTo(int64_t seekTimeUs) {
283    sp<AMessage> msg = new AMessage(kWhatPerformSeek, this);
284    msg->setInt32("generation", ++mSeekGeneration);
285    msg->setInt64("timeUs", seekTimeUs);
286
287    sp<AMessage> response;
288    status_t err = msg->postAndAwaitResponse(&response);
289    if (err == OK && response != NULL) {
290        CHECK(response->findInt32("err", &err));
291    }
292
293    return err;
294}
295
296void NuPlayer::RTSPSource::performSeek(int64_t seekTimeUs) {
297    if (mState != CONNECTED) {
298        finishSeek(INVALID_OPERATION);
299        return;
300    }
301
302    mState = SEEKING;
303    mHandler->seek(seekTimeUs);
304    mEOSPending = false;
305}
306
307void NuPlayer::RTSPSource::schedulePollBuffering() {
308    sp<AMessage> msg = new AMessage(kWhatPollBuffering, this);
309    msg->post(1000000ll); // 1 second intervals
310}
311
312void NuPlayer::RTSPSource::checkBuffering(
313        bool *prepared, bool *underflow, bool *overflow, bool *startServer, bool *finished) {
314    size_t numTracks = mTracks.size();
315    size_t preparedCount, underflowCount, overflowCount, startCount, finishedCount;
316    preparedCount = underflowCount = overflowCount = startCount = finishedCount = 0;
317
318    size_t count = numTracks;
319    for (size_t i = 0; i < count; ++i) {
320        status_t finalResult;
321        TrackInfo *info = &mTracks.editItemAt(i);
322        sp<AnotherPacketSource> src = info->mSource;
323        if (src == NULL) {
324            --numTracks;
325            continue;
326        }
327        int64_t bufferedDurationUs = src->getBufferedDurationUs(&finalResult);
328
329        // isFinished when duration is 0 checks for EOS result only
330        if (bufferedDurationUs > kPrepareMarkUs || src->isFinished(/* duration */ 0)) {
331            ++preparedCount;
332        }
333
334        if (src->isFinished(/* duration */ 0)) {
335            ++overflowCount;
336            ++finishedCount;
337        } else {
338            if (bufferedDurationUs < kUnderflowMarkUs) {
339                ++underflowCount;
340            }
341            if (bufferedDurationUs > kOverflowMarkUs) {
342                ++overflowCount;
343            }
344            if (bufferedDurationUs < kStartServerMarkUs) {
345                ++startCount;
346            }
347        }
348    }
349
350    *prepared    = (preparedCount == numTracks);
351    *underflow   = (underflowCount > 0);
352    *overflow    = (overflowCount == numTracks);
353    *startServer = (startCount > 0);
354    *finished    = (finishedCount > 0);
355}
356
357void NuPlayer::RTSPSource::onPollBuffering() {
358    bool prepared, underflow, overflow, startServer, finished;
359    checkBuffering(&prepared, &underflow, &overflow, &startServer, &finished);
360
361    if (prepared && mInPreparationPhase) {
362        mInPreparationPhase = false;
363        notifyPrepared();
364    }
365
366    if (!mInPreparationPhase && underflow) {
367        startBufferingIfNecessary();
368    }
369
370    if (haveSufficientDataOnAllTracks()) {
371        stopBufferingIfNecessary();
372    }
373
374    if (overflow && mHandler != NULL) {
375        mHandler->pause();
376    }
377
378    if (startServer && mHandler != NULL) {
379        mHandler->resume();
380    }
381
382    if (finished && mHandler != NULL) {
383        mHandler->cancelAccessUnitTimeoutCheck();
384    }
385
386    schedulePollBuffering();
387}
388
389void NuPlayer::RTSPSource::signalSourceEOS(status_t result) {
390    const bool audio = true;
391    const bool video = false;
392
393    sp<AnotherPacketSource> source = getSource(audio);
394    if (source != NULL) {
395        source->signalEOS(result);
396    }
397
398    source = getSource(video);
399    if (source != NULL) {
400        source->signalEOS(result);
401    }
402}
403
404bool NuPlayer::RTSPSource::sourceReachedEOS(bool audio) {
405    sp<AnotherPacketSource> source = getSource(audio);
406    status_t finalResult;
407    return (source != NULL &&
408            !source->hasBufferAvailable(&finalResult) &&
409            finalResult == ERROR_END_OF_STREAM);
410}
411
412bool NuPlayer::RTSPSource::sourceNearEOS(bool audio) {
413    sp<AnotherPacketSource> source = getSource(audio);
414    int64_t mediaDurationUs = 0;
415    getDuration(&mediaDurationUs);
416    return (source != NULL && source->isFinished(mediaDurationUs));
417}
418
419void NuPlayer::RTSPSource::onSignalEOS(const sp<AMessage> &msg) {
420    int32_t generation;
421    CHECK(msg->findInt32("generation", &generation));
422
423    if (generation != mSeekGeneration) {
424        return;
425    }
426
427    if (mEOSPending) {
428        signalSourceEOS(ERROR_END_OF_STREAM);
429        mEOSPending = false;
430    }
431}
432
433void NuPlayer::RTSPSource::postSourceEOSIfNecessary() {
434    const bool audio = true;
435    const bool video = false;
436    // If a source has detected near end, give it some time to retrieve more
437    // data before signaling EOS
438    if (sourceNearEOS(audio) || sourceNearEOS(video)) {
439        if (!mEOSPending) {
440            sp<AMessage> msg = new AMessage(kWhatSignalEOS, this);
441            msg->setInt32("generation", mSeekGeneration);
442            msg->post(kNearEOSTimeoutUs);
443            mEOSPending = true;
444        }
445    }
446}
447
448void NuPlayer::RTSPSource::onMessageReceived(const sp<AMessage> &msg) {
449    if (msg->what() == kWhatDisconnect) {
450        sp<AReplyToken> replyID;
451        CHECK(msg->senderAwaitsResponse(&replyID));
452
453        mDisconnectReplyID = replyID;
454        finishDisconnectIfPossible();
455        return;
456    } else if (msg->what() == kWhatPerformSeek) {
457        int32_t generation;
458        CHECK(msg->findInt32("generation", &generation));
459        CHECK(msg->senderAwaitsResponse(&mSeekReplyID));
460
461        if (generation != mSeekGeneration) {
462            // obsolete.
463            finishSeek(OK);
464            return;
465        }
466
467        int64_t seekTimeUs;
468        CHECK(msg->findInt64("timeUs", &seekTimeUs));
469
470        performSeek(seekTimeUs);
471        return;
472    } else if (msg->what() == kWhatPollBuffering) {
473        onPollBuffering();
474        return;
475    } else if (msg->what() == kWhatSignalEOS) {
476        onSignalEOS(msg);
477        return;
478    }
479
480    CHECK_EQ(msg->what(), (int)kWhatNotify);
481
482    int32_t what;
483    CHECK(msg->findInt32("what", &what));
484
485    switch (what) {
486        case MyHandler::kWhatConnected:
487        {
488            onConnected();
489
490            notifyVideoSizeChanged();
491
492            uint32_t flags = 0;
493
494            if (mHandler->isSeekable()) {
495                flags = FLAG_CAN_PAUSE
496                        | FLAG_CAN_SEEK
497                        | FLAG_CAN_SEEK_BACKWARD
498                        | FLAG_CAN_SEEK_FORWARD;
499            }
500
501            notifyFlagsChanged(flags);
502            schedulePollBuffering();
503            break;
504        }
505
506        case MyHandler::kWhatDisconnected:
507        {
508            onDisconnected(msg);
509            break;
510        }
511
512        case MyHandler::kWhatSeekDone:
513        {
514            mState = CONNECTED;
515            // Unblock seekTo here in case we attempted to seek in a live stream
516            finishSeek(OK);
517            break;
518        }
519
520        case MyHandler::kWhatSeekPaused:
521        {
522            sp<AnotherPacketSource> source = getSource(true /* audio */);
523            if (source != NULL) {
524                source->queueDiscontinuity(ATSParser::DISCONTINUITY_NONE,
525                        /* extra */ NULL,
526                        /* discard */ true);
527            }
528            source = getSource(false /* video */);
529            if (source != NULL) {
530                source->queueDiscontinuity(ATSParser::DISCONTINUITY_NONE,
531                        /* extra */ NULL,
532                        /* discard */ true);
533            };
534
535            status_t err = OK;
536            msg->findInt32("err", &err);
537
538            if (err == OK) {
539                int64_t timeUs;
540                CHECK(msg->findInt64("time", &timeUs));
541                mHandler->continueSeekAfterPause(timeUs);
542            } else {
543                finishSeek(err);
544            }
545            break;
546        }
547
548        case MyHandler::kWhatAccessUnit:
549        {
550            size_t trackIndex;
551            CHECK(msg->findSize("trackIndex", &trackIndex));
552
553            if (mTSParser == NULL) {
554                CHECK_LT(trackIndex, mTracks.size());
555            } else {
556                CHECK_EQ(trackIndex, 0u);
557            }
558
559            sp<ABuffer> accessUnit;
560            CHECK(msg->findBuffer("accessUnit", &accessUnit));
561
562            int32_t damaged;
563            if (accessUnit->meta()->findInt32("damaged", &damaged)
564                    && damaged) {
565                ALOGI("dropping damaged access unit.");
566                break;
567            }
568
569            if (mTSParser != NULL) {
570                size_t offset = 0;
571                status_t err = OK;
572                while (offset + 188 <= accessUnit->size()) {
573                    err = mTSParser->feedTSPacket(
574                            accessUnit->data() + offset, 188);
575                    if (err != OK) {
576                        break;
577                    }
578
579                    offset += 188;
580                }
581
582                if (offset < accessUnit->size()) {
583                    err = ERROR_MALFORMED;
584                }
585
586                if (err != OK) {
587                    signalSourceEOS(err);
588                }
589
590                postSourceEOSIfNecessary();
591                break;
592            }
593
594            TrackInfo *info = &mTracks.editItemAt(trackIndex);
595
596            sp<AnotherPacketSource> source = info->mSource;
597            if (source != NULL) {
598                uint32_t rtpTime;
599                CHECK(accessUnit->meta()->findInt32("rtp-time", (int32_t *)&rtpTime));
600
601                if (!info->mNPTMappingValid) {
602                    // This is a live stream, we didn't receive any normal
603                    // playtime mapping. We won't map to npt time.
604                    source->queueAccessUnit(accessUnit);
605                    break;
606                }
607
608                int64_t nptUs =
609                    ((double)rtpTime - (double)info->mRTPTime)
610                        / info->mTimeScale
611                        * 1000000ll
612                        + info->mNormalPlaytimeUs;
613
614                accessUnit->meta()->setInt64("timeUs", nptUs);
615
616                source->queueAccessUnit(accessUnit);
617            }
618            postSourceEOSIfNecessary();
619            break;
620        }
621
622        case MyHandler::kWhatEOS:
623        {
624            int32_t finalResult;
625            CHECK(msg->findInt32("finalResult", &finalResult));
626            CHECK_NE(finalResult, (status_t)OK);
627
628            if (mTSParser != NULL) {
629                signalSourceEOS(finalResult);
630            }
631
632            size_t trackIndex;
633            CHECK(msg->findSize("trackIndex", &trackIndex));
634            CHECK_LT(trackIndex, mTracks.size());
635
636            TrackInfo *info = &mTracks.editItemAt(trackIndex);
637            sp<AnotherPacketSource> source = info->mSource;
638            if (source != NULL) {
639                source->signalEOS(finalResult);
640            }
641
642            break;
643        }
644
645        case MyHandler::kWhatSeekDiscontinuity:
646        {
647            size_t trackIndex;
648            CHECK(msg->findSize("trackIndex", &trackIndex));
649            CHECK_LT(trackIndex, mTracks.size());
650
651            TrackInfo *info = &mTracks.editItemAt(trackIndex);
652            sp<AnotherPacketSource> source = info->mSource;
653            if (source != NULL) {
654                source->queueDiscontinuity(
655                        ATSParser::DISCONTINUITY_TIME,
656                        NULL,
657                        true /* discard */);
658            }
659
660            break;
661        }
662
663        case MyHandler::kWhatNormalPlayTimeMapping:
664        {
665            size_t trackIndex;
666            CHECK(msg->findSize("trackIndex", &trackIndex));
667            CHECK_LT(trackIndex, mTracks.size());
668
669            uint32_t rtpTime;
670            CHECK(msg->findInt32("rtpTime", (int32_t *)&rtpTime));
671
672            int64_t nptUs;
673            CHECK(msg->findInt64("nptUs", &nptUs));
674
675            TrackInfo *info = &mTracks.editItemAt(trackIndex);
676            info->mRTPTime = rtpTime;
677            info->mNormalPlaytimeUs = nptUs;
678            info->mNPTMappingValid = true;
679            break;
680        }
681
682        case SDPLoader::kWhatSDPLoaded:
683        {
684            onSDPLoaded(msg);
685            break;
686        }
687
688        default:
689            TRESPASS();
690    }
691}
692
693void NuPlayer::RTSPSource::onConnected() {
694    CHECK(mAudioTrack == NULL);
695    CHECK(mVideoTrack == NULL);
696
697    size_t numTracks = mHandler->countTracks();
698    for (size_t i = 0; i < numTracks; ++i) {
699        int32_t timeScale;
700        sp<MetaData> format = mHandler->getTrackFormat(i, &timeScale);
701
702        const char *mime;
703        CHECK(format->findCString(kKeyMIMEType, &mime));
704
705        if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_MPEG2TS)) {
706            // Very special case for MPEG2 Transport Streams.
707            CHECK_EQ(numTracks, 1u);
708
709            mTSParser = new ATSParser;
710            return;
711        }
712
713        bool isAudio = !strncasecmp(mime, "audio/", 6);
714        bool isVideo = !strncasecmp(mime, "video/", 6);
715
716        TrackInfo info;
717        info.mTimeScale = timeScale;
718        info.mRTPTime = 0;
719        info.mNormalPlaytimeUs = 0ll;
720        info.mNPTMappingValid = false;
721
722        if ((isAudio && mAudioTrack == NULL)
723                || (isVideo && mVideoTrack == NULL)) {
724            sp<AnotherPacketSource> source = new AnotherPacketSource(format);
725
726            if (isAudio) {
727                mAudioTrack = source;
728            } else {
729                mVideoTrack = source;
730            }
731
732            info.mSource = source;
733        }
734
735        mTracks.push(info);
736    }
737
738    mState = CONNECTED;
739}
740
741void NuPlayer::RTSPSource::onSDPLoaded(const sp<AMessage> &msg) {
742    status_t err;
743    CHECK(msg->findInt32("result", &err));
744
745    mSDPLoader.clear();
746
747    if (mDisconnectReplyID != 0) {
748        err = UNKNOWN_ERROR;
749    }
750
751    if (err == OK) {
752        sp<ASessionDescription> desc;
753        sp<RefBase> obj;
754        CHECK(msg->findObject("description", &obj));
755        desc = static_cast<ASessionDescription *>(obj.get());
756
757        AString rtspUri;
758        if (!desc->findAttribute(0, "a=control", &rtspUri)) {
759            ALOGE("Unable to find url in SDP");
760            err = UNKNOWN_ERROR;
761        } else {
762            sp<AMessage> notify = new AMessage(kWhatNotify, this);
763
764            mHandler = new MyHandler(rtspUri.c_str(), notify, mUIDValid, mUID);
765            mLooper->registerHandler(mHandler);
766
767            mHandler->loadSDP(desc);
768        }
769    }
770
771    if (err != OK) {
772        if (mState == CONNECTING) {
773            // We're still in the preparation phase, signal that it
774            // failed.
775            notifyPrepared(err);
776        }
777
778        mState = DISCONNECTED;
779        setError(err);
780
781        if (mDisconnectReplyID != 0) {
782            finishDisconnectIfPossible();
783        }
784    }
785}
786
787void NuPlayer::RTSPSource::onDisconnected(const sp<AMessage> &msg) {
788    if (mState == DISCONNECTED) {
789        return;
790    }
791
792    status_t err;
793    CHECK(msg->findInt32("result", &err));
794    CHECK_NE(err, (status_t)OK);
795
796    mLooper->unregisterHandler(mHandler->id());
797    mHandler.clear();
798
799    if (mState == CONNECTING) {
800        // We're still in the preparation phase, signal that it
801        // failed.
802        notifyPrepared(err);
803    }
804
805    mState = DISCONNECTED;
806    setError(err);
807
808    if (mDisconnectReplyID != 0) {
809        finishDisconnectIfPossible();
810    }
811}
812
813void NuPlayer::RTSPSource::finishDisconnectIfPossible() {
814    if (mState != DISCONNECTED) {
815        if (mHandler != NULL) {
816            mHandler->disconnect();
817        } else if (mSDPLoader != NULL) {
818            mSDPLoader->cancel();
819        }
820        return;
821    }
822
823    (new AMessage)->postReply(mDisconnectReplyID);
824    mDisconnectReplyID = 0;
825}
826
827void NuPlayer::RTSPSource::setError(status_t err) {
828    Mutex::Autolock _l(mBufferingLock);
829    mFinalResult = err;
830}
831
832void NuPlayer::RTSPSource::startBufferingIfNecessary() {
833    Mutex::Autolock _l(mBufferingLock);
834
835    if (!mBuffering) {
836        mBuffering = true;
837
838        sp<AMessage> notify = dupNotify();
839        notify->setInt32("what", kWhatPauseOnBufferingStart);
840        notify->post();
841    }
842}
843
844bool NuPlayer::RTSPSource::stopBufferingIfNecessary() {
845    Mutex::Autolock _l(mBufferingLock);
846
847    if (mBuffering) {
848        if (!haveSufficientDataOnAllTracks()) {
849            return false;
850        }
851
852        mBuffering = false;
853
854        sp<AMessage> notify = dupNotify();
855        notify->setInt32("what", kWhatResumeOnBufferingEnd);
856        notify->post();
857    }
858
859    return true;
860}
861
862void NuPlayer::RTSPSource::finishSeek(status_t err) {
863    if (mSeekReplyID == NULL) {
864        return;
865    }
866    sp<AMessage> seekReply = new AMessage;
867    seekReply->setInt32("err", err);
868    seekReply->postReply(mSeekReplyID);
869    mSeekReplyID = NULL;
870}
871
872}  // namespace android
873