NuPlayer2: fork the native code for MediaPlayer2

Forked from fec2f93fae282ad10bbb5e3fcce9f60eff2cfb48
NuPlayer2Decoder uses NdkMediaCodec, NdkMediaCrypto.
NuPlayer2Drm uses NdkMediaDrm.
No more IMediaHTTPService and IMediaHTTPConnection in NuPlayer2.
Test: compiles
Bug: 69805888

Change-Id: Ica3c168d40dcf114fb44e8688a9ede671e8d77ef
diff --git a/media/libmedia/nuplayer2/RTSPSource.cpp b/media/libmedia/nuplayer2/RTSPSource.cpp
new file mode 100644
index 0000000..3f6966d
--- /dev/null
+++ b/media/libmedia/nuplayer2/RTSPSource.cpp
@@ -0,0 +1,904 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "RTSPSource"
+#include <utils/Log.h>
+
+#include "RTSPSource.h"
+
+#include "AnotherPacketSource.h"
+#include "MyHandler.h"
+#include "SDPLoader.h"
+
+#include <media/MediaHTTPService.h>
+#include <media/stagefright/MediaDefs.h>
+#include <media/stagefright/MetaData.h>
+
+namespace android {
+
+const int64_t kNearEOSTimeoutUs = 2000000ll; // 2 secs
+
+// Default Buffer Underflow/Prepare/StartServer/Overflow Marks
+static const int kUnderflowMarkMs   =  1000;  // 1 second
+static const int kPrepareMarkMs     =  3000;  // 3 seconds
+//static const int kStartServerMarkMs =  5000;
+static const int kOverflowMarkMs    = 10000;  // 10 seconds
+
+NuPlayer2::RTSPSource::RTSPSource(
+        const sp<AMessage> &notify,
+        const sp<MediaHTTPService> &httpService,
+        const char *url,
+        const KeyedVector<String8, String8> *headers,
+        bool uidValid,
+        uid_t uid,
+        bool isSDP)
+    : Source(notify),
+      mHTTPService(httpService),
+      mURL(url),
+      mUIDValid(uidValid),
+      mUID(uid),
+      mFlags(0),
+      mIsSDP(isSDP),
+      mState(DISCONNECTED),
+      mFinalResult(OK),
+      mDisconnectReplyID(0),
+      mBuffering(false),
+      mInPreparationPhase(true),
+      mEOSPending(false),
+      mSeekGeneration(0),
+      mEOSTimeoutAudio(0),
+      mEOSTimeoutVideo(0) {
+    mBufferingSettings.mInitialMarkMs = kPrepareMarkMs;
+    mBufferingSettings.mResumePlaybackMarkMs = kOverflowMarkMs;
+    if (headers) {
+        mExtraHeaders = *headers;
+
+        ssize_t index =
+            mExtraHeaders.indexOfKey(String8("x-hide-urls-from-log"));
+
+        if (index >= 0) {
+            mFlags |= kFlagIncognito;
+
+            mExtraHeaders.removeItemsAt(index);
+        }
+    }
+}
+
+NuPlayer2::RTSPSource::~RTSPSource() {
+    if (mLooper != NULL) {
+        mLooper->unregisterHandler(id());
+        mLooper->stop();
+    }
+}
+
+status_t NuPlayer2::RTSPSource::getBufferingSettings(
+            BufferingSettings* buffering /* nonnull */) {
+    Mutex::Autolock _l(mBufferingSettingsLock);
+    *buffering = mBufferingSettings;
+    return OK;
+}
+
+status_t NuPlayer2::RTSPSource::setBufferingSettings(const BufferingSettings& buffering) {
+    Mutex::Autolock _l(mBufferingSettingsLock);
+    mBufferingSettings = buffering;
+    return OK;
+}
+
+void NuPlayer2::RTSPSource::prepareAsync() {
+    if (mIsSDP && mHTTPService == NULL) {
+        notifyPrepared(BAD_VALUE);
+        return;
+    }
+
+    if (mLooper == NULL) {
+        mLooper = new ALooper;
+        mLooper->setName("rtsp");
+        mLooper->start();
+
+        mLooper->registerHandler(this);
+    }
+
+    CHECK(mHandler == NULL);
+    CHECK(mSDPLoader == NULL);
+
+    sp<AMessage> notify = new AMessage(kWhatNotify, this);
+
+    CHECK_EQ(mState, (int)DISCONNECTED);
+    mState = CONNECTING;
+
+    if (mIsSDP) {
+        mSDPLoader = new SDPLoader(notify,
+                (mFlags & kFlagIncognito) ? SDPLoader::kFlagIncognito : 0,
+                mHTTPService);
+
+        mSDPLoader->load(
+                mURL.c_str(), mExtraHeaders.isEmpty() ? NULL : &mExtraHeaders);
+    } else {
+        mHandler = new MyHandler(mURL.c_str(), notify, mUIDValid, mUID);
+        mLooper->registerHandler(mHandler);
+
+        mHandler->connect();
+    }
+
+    startBufferingIfNecessary();
+}
+
+void NuPlayer2::RTSPSource::start() {
+}
+
+void NuPlayer2::RTSPSource::stop() {
+    if (mLooper == NULL) {
+        return;
+    }
+    sp<AMessage> msg = new AMessage(kWhatDisconnect, this);
+
+    sp<AMessage> dummy;
+    msg->postAndAwaitResponse(&dummy);
+}
+
+status_t NuPlayer2::RTSPSource::feedMoreTSData() {
+    Mutex::Autolock _l(mBufferingLock);
+    return mFinalResult;
+}
+
+sp<MetaData> NuPlayer2::RTSPSource::getFormatMeta(bool audio) {
+    sp<AnotherPacketSource> source = getSource(audio);
+
+    if (source == NULL) {
+        return NULL;
+    }
+
+    return source->getFormat();
+}
+
+bool NuPlayer2::RTSPSource::haveSufficientDataOnAllTracks() {
+    // We're going to buffer at least 2 secs worth data on all tracks before
+    // starting playback (both at startup and after a seek).
+
+    static const int64_t kMinDurationUs = 2000000ll;
+
+    int64_t mediaDurationUs = 0;
+    getDuration(&mediaDurationUs);
+    if ((mAudioTrack != NULL && mAudioTrack->isFinished(mediaDurationUs))
+            || (mVideoTrack != NULL && mVideoTrack->isFinished(mediaDurationUs))) {
+        return true;
+    }
+
+    status_t err;
+    int64_t durationUs;
+    if (mAudioTrack != NULL
+            && (durationUs = mAudioTrack->getBufferedDurationUs(&err))
+                    < kMinDurationUs
+            && err == OK) {
+        ALOGV("audio track doesn't have enough data yet. (%.2f secs buffered)",
+              durationUs / 1E6);
+        return false;
+    }
+
+    if (mVideoTrack != NULL
+            && (durationUs = mVideoTrack->getBufferedDurationUs(&err))
+                    < kMinDurationUs
+            && err == OK) {
+        ALOGV("video track doesn't have enough data yet. (%.2f secs buffered)",
+              durationUs / 1E6);
+        return false;
+    }
+
+    return true;
+}
+
+status_t NuPlayer2::RTSPSource::dequeueAccessUnit(
+        bool audio, sp<ABuffer> *accessUnit) {
+    if (!stopBufferingIfNecessary()) {
+        return -EWOULDBLOCK;
+    }
+
+    sp<AnotherPacketSource> source = getSource(audio);
+
+    if (source == NULL) {
+        return -EWOULDBLOCK;
+    }
+
+    status_t finalResult;
+    if (!source->hasBufferAvailable(&finalResult)) {
+        if (finalResult == OK) {
+
+            // If other source already signaled EOS, this source should also return EOS
+            if (sourceReachedEOS(!audio)) {
+                return ERROR_END_OF_STREAM;
+            }
+
+            // If this source has detected near end, give it some time to retrieve more
+            // data before returning EOS
+            int64_t mediaDurationUs = 0;
+            getDuration(&mediaDurationUs);
+            if (source->isFinished(mediaDurationUs)) {
+                int64_t eosTimeout = audio ? mEOSTimeoutAudio : mEOSTimeoutVideo;
+                if (eosTimeout == 0) {
+                    setEOSTimeout(audio, ALooper::GetNowUs());
+                } else if ((ALooper::GetNowUs() - eosTimeout) > kNearEOSTimeoutUs) {
+                    setEOSTimeout(audio, 0);
+                    return ERROR_END_OF_STREAM;
+                }
+                return -EWOULDBLOCK;
+            }
+
+            if (!sourceNearEOS(!audio)) {
+                // We should not enter buffering mode
+                // if any of the sources already have detected EOS.
+                startBufferingIfNecessary();
+            }
+
+            return -EWOULDBLOCK;
+        }
+        return finalResult;
+    }
+
+    setEOSTimeout(audio, 0);
+
+    return source->dequeueAccessUnit(accessUnit);
+}
+
+sp<AnotherPacketSource> NuPlayer2::RTSPSource::getSource(bool audio) {
+    if (mTSParser != NULL) {
+        sp<MediaSource> source = mTSParser->getSource(
+                audio ? ATSParser::AUDIO : ATSParser::VIDEO);
+
+        return static_cast<AnotherPacketSource *>(source.get());
+    }
+
+    return audio ? mAudioTrack : mVideoTrack;
+}
+
+void NuPlayer2::RTSPSource::setEOSTimeout(bool audio, int64_t timeout) {
+    if (audio) {
+        mEOSTimeoutAudio = timeout;
+    } else {
+        mEOSTimeoutVideo = timeout;
+    }
+}
+
+status_t NuPlayer2::RTSPSource::getDuration(int64_t *durationUs) {
+    *durationUs = -1ll;
+
+    int64_t audioDurationUs;
+    if (mAudioTrack != NULL
+            && mAudioTrack->getFormat()->findInt64(
+                kKeyDuration, &audioDurationUs)
+            && audioDurationUs > *durationUs) {
+        *durationUs = audioDurationUs;
+    }
+
+    int64_t videoDurationUs;
+    if (mVideoTrack != NULL
+            && mVideoTrack->getFormat()->findInt64(
+                kKeyDuration, &videoDurationUs)
+            && videoDurationUs > *durationUs) {
+        *durationUs = videoDurationUs;
+    }
+
+    return OK;
+}
+
+status_t NuPlayer2::RTSPSource::seekTo(int64_t seekTimeUs, MediaPlayer2SeekMode mode) {
+    sp<AMessage> msg = new AMessage(kWhatPerformSeek, this);
+    msg->setInt32("generation", ++mSeekGeneration);
+    msg->setInt64("timeUs", seekTimeUs);
+    msg->setInt32("mode", mode);
+
+    sp<AMessage> response;
+    status_t err = msg->postAndAwaitResponse(&response);
+    if (err == OK && response != NULL) {
+        CHECK(response->findInt32("err", &err));
+    }
+
+    return err;
+}
+
+void NuPlayer2::RTSPSource::performSeek(int64_t seekTimeUs) {
+    if (mState != CONNECTED) {
+        finishSeek(INVALID_OPERATION);
+        return;
+    }
+
+    mState = SEEKING;
+    mHandler->seek(seekTimeUs);
+    mEOSPending = false;
+}
+
+void NuPlayer2::RTSPSource::schedulePollBuffering() {
+    sp<AMessage> msg = new AMessage(kWhatPollBuffering, this);
+    msg->post(1000000ll); // 1 second intervals
+}
+
+void NuPlayer2::RTSPSource::checkBuffering(
+        bool *prepared, bool *underflow, bool *overflow, bool *startServer, bool *finished) {
+    size_t numTracks = mTracks.size();
+    size_t preparedCount, underflowCount, overflowCount, startCount, finishedCount;
+    preparedCount = underflowCount = overflowCount = startCount = finishedCount = 0;
+
+    size_t count = numTracks;
+    for (size_t i = 0; i < count; ++i) {
+        status_t finalResult;
+        TrackInfo *info = &mTracks.editItemAt(i);
+        sp<AnotherPacketSource> src = info->mSource;
+        if (src == NULL) {
+            --numTracks;
+            continue;
+        }
+        int64_t bufferedDurationUs = src->getBufferedDurationUs(&finalResult);
+
+        int64_t initialMarkUs;
+        int64_t maxRebufferingMarkUs;
+        {
+            Mutex::Autolock _l(mBufferingSettingsLock);
+            initialMarkUs = mBufferingSettings.mInitialMarkMs * 1000ll;
+            // TODO: maxRebufferingMarkUs could be larger than
+            // mBufferingSettings.mResumePlaybackMarkMs * 1000ll.
+            maxRebufferingMarkUs = mBufferingSettings.mResumePlaybackMarkMs * 1000ll;
+        }
+        // isFinished when duration is 0 checks for EOS result only
+        if (bufferedDurationUs > initialMarkUs
+                || src->isFinished(/* duration */ 0)) {
+            ++preparedCount;
+        }
+
+        if (src->isFinished(/* duration */ 0)) {
+            ++overflowCount;
+            ++finishedCount;
+        } else {
+            // TODO: redefine kUnderflowMarkMs to a fair value,
+            if (bufferedDurationUs < kUnderflowMarkMs * 1000) {
+                ++underflowCount;
+            }
+            if (bufferedDurationUs > maxRebufferingMarkUs) {
+                ++overflowCount;
+            }
+            int64_t startServerMarkUs =
+                    (kUnderflowMarkMs * 1000ll + maxRebufferingMarkUs) / 2;
+            if (bufferedDurationUs < startServerMarkUs) {
+                ++startCount;
+            }
+        }
+    }
+
+    *prepared    = (preparedCount == numTracks);
+    *underflow   = (underflowCount > 0);
+    *overflow    = (overflowCount == numTracks);
+    *startServer = (startCount > 0);
+    *finished    = (finishedCount > 0);
+}
+
+void NuPlayer2::RTSPSource::onPollBuffering() {
+    bool prepared, underflow, overflow, startServer, finished;
+    checkBuffering(&prepared, &underflow, &overflow, &startServer, &finished);
+
+    if (prepared && mInPreparationPhase) {
+        mInPreparationPhase = false;
+        notifyPrepared();
+    }
+
+    if (!mInPreparationPhase && underflow) {
+        startBufferingIfNecessary();
+    }
+
+    if (haveSufficientDataOnAllTracks()) {
+        stopBufferingIfNecessary();
+    }
+
+    if (overflow && mHandler != NULL) {
+        mHandler->pause();
+    }
+
+    if (startServer && mHandler != NULL) {
+        mHandler->resume();
+    }
+
+    if (finished && mHandler != NULL) {
+        mHandler->cancelAccessUnitTimeoutCheck();
+    }
+
+    schedulePollBuffering();
+}
+
+void NuPlayer2::RTSPSource::signalSourceEOS(status_t result) {
+    const bool audio = true;
+    const bool video = false;
+
+    sp<AnotherPacketSource> source = getSource(audio);
+    if (source != NULL) {
+        source->signalEOS(result);
+    }
+
+    source = getSource(video);
+    if (source != NULL) {
+        source->signalEOS(result);
+    }
+}
+
+bool NuPlayer2::RTSPSource::sourceReachedEOS(bool audio) {
+    sp<AnotherPacketSource> source = getSource(audio);
+    status_t finalResult;
+    return (source != NULL &&
+            !source->hasBufferAvailable(&finalResult) &&
+            finalResult == ERROR_END_OF_STREAM);
+}
+
+bool NuPlayer2::RTSPSource::sourceNearEOS(bool audio) {
+    sp<AnotherPacketSource> source = getSource(audio);
+    int64_t mediaDurationUs = 0;
+    getDuration(&mediaDurationUs);
+    return (source != NULL && source->isFinished(mediaDurationUs));
+}
+
+void NuPlayer2::RTSPSource::onSignalEOS(const sp<AMessage> &msg) {
+    int32_t generation;
+    CHECK(msg->findInt32("generation", &generation));
+
+    if (generation != mSeekGeneration) {
+        return;
+    }
+
+    if (mEOSPending) {
+        signalSourceEOS(ERROR_END_OF_STREAM);
+        mEOSPending = false;
+    }
+}
+
+void NuPlayer2::RTSPSource::postSourceEOSIfNecessary() {
+    const bool audio = true;
+    const bool video = false;
+    // If a source has detected near end, give it some time to retrieve more
+    // data before signaling EOS
+    if (sourceNearEOS(audio) || sourceNearEOS(video)) {
+        if (!mEOSPending) {
+            sp<AMessage> msg = new AMessage(kWhatSignalEOS, this);
+            msg->setInt32("generation", mSeekGeneration);
+            msg->post(kNearEOSTimeoutUs);
+            mEOSPending = true;
+        }
+    }
+}
+
+void NuPlayer2::RTSPSource::onMessageReceived(const sp<AMessage> &msg) {
+    if (msg->what() == kWhatDisconnect) {
+        sp<AReplyToken> replyID;
+        CHECK(msg->senderAwaitsResponse(&replyID));
+
+        mDisconnectReplyID = replyID;
+        finishDisconnectIfPossible();
+        return;
+    } else if (msg->what() == kWhatPerformSeek) {
+        int32_t generation;
+        CHECK(msg->findInt32("generation", &generation));
+        CHECK(msg->senderAwaitsResponse(&mSeekReplyID));
+
+        if (generation != mSeekGeneration) {
+            // obsolete.
+            finishSeek(OK);
+            return;
+        }
+
+        int64_t seekTimeUs;
+        int32_t mode;
+        CHECK(msg->findInt64("timeUs", &seekTimeUs));
+        CHECK(msg->findInt32("mode", &mode));
+
+        // TODO: add "mode" to performSeek.
+        performSeek(seekTimeUs/*, (MediaPlayer2SeekMode)mode */);
+        return;
+    } else if (msg->what() == kWhatPollBuffering) {
+        onPollBuffering();
+        return;
+    } else if (msg->what() == kWhatSignalEOS) {
+        onSignalEOS(msg);
+        return;
+    }
+
+    CHECK_EQ(msg->what(), kWhatNotify);
+
+    int32_t what;
+    CHECK(msg->findInt32("what", &what));
+
+    switch (what) {
+        case MyHandler::kWhatConnected:
+        {
+            onConnected();
+
+            notifyVideoSizeChanged();
+
+            uint32_t flags = 0;
+
+            if (mHandler->isSeekable()) {
+                flags = FLAG_CAN_PAUSE
+                        | FLAG_CAN_SEEK
+                        | FLAG_CAN_SEEK_BACKWARD
+                        | FLAG_CAN_SEEK_FORWARD;
+            }
+
+            notifyFlagsChanged(flags);
+            schedulePollBuffering();
+            break;
+        }
+
+        case MyHandler::kWhatDisconnected:
+        {
+            onDisconnected(msg);
+            break;
+        }
+
+        case MyHandler::kWhatSeekDone:
+        {
+            mState = CONNECTED;
+            // Unblock seekTo here in case we attempted to seek in a live stream
+            finishSeek(OK);
+            break;
+        }
+
+        case MyHandler::kWhatSeekPaused:
+        {
+            sp<AnotherPacketSource> source = getSource(true /* audio */);
+            if (source != NULL) {
+                source->queueDiscontinuity(ATSParser::DISCONTINUITY_NONE,
+                        /* extra */ NULL,
+                        /* discard */ true);
+            }
+            source = getSource(false /* video */);
+            if (source != NULL) {
+                source->queueDiscontinuity(ATSParser::DISCONTINUITY_NONE,
+                        /* extra */ NULL,
+                        /* discard */ true);
+            };
+
+            status_t err = OK;
+            msg->findInt32("err", &err);
+
+            if (err == OK) {
+                int64_t timeUs;
+                CHECK(msg->findInt64("time", &timeUs));
+                mHandler->continueSeekAfterPause(timeUs);
+            } else {
+                finishSeek(err);
+            }
+            break;
+        }
+
+        case MyHandler::kWhatAccessUnit:
+        {
+            size_t trackIndex;
+            CHECK(msg->findSize("trackIndex", &trackIndex));
+
+            if (mTSParser == NULL) {
+                CHECK_LT(trackIndex, mTracks.size());
+            } else {
+                CHECK_EQ(trackIndex, 0u);
+            }
+
+            sp<ABuffer> accessUnit;
+            CHECK(msg->findBuffer("accessUnit", &accessUnit));
+
+            int32_t damaged;
+            if (accessUnit->meta()->findInt32("damaged", &damaged)
+                    && damaged) {
+                ALOGI("dropping damaged access unit.");
+                break;
+            }
+
+            if (mTSParser != NULL) {
+                size_t offset = 0;
+                status_t err = OK;
+                while (offset + 188 <= accessUnit->size()) {
+                    err = mTSParser->feedTSPacket(
+                            accessUnit->data() + offset, 188);
+                    if (err != OK) {
+                        break;
+                    }
+
+                    offset += 188;
+                }
+
+                if (offset < accessUnit->size()) {
+                    err = ERROR_MALFORMED;
+                }
+
+                if (err != OK) {
+                    signalSourceEOS(err);
+                }
+
+                postSourceEOSIfNecessary();
+                break;
+            }
+
+            TrackInfo *info = &mTracks.editItemAt(trackIndex);
+
+            sp<AnotherPacketSource> source = info->mSource;
+            if (source != NULL) {
+                uint32_t rtpTime;
+                CHECK(accessUnit->meta()->findInt32("rtp-time", (int32_t *)&rtpTime));
+
+                if (!info->mNPTMappingValid) {
+                    // This is a live stream, we didn't receive any normal
+                    // playtime mapping. We won't map to npt time.
+                    source->queueAccessUnit(accessUnit);
+                    break;
+                }
+
+                int64_t nptUs =
+                    ((double)rtpTime - (double)info->mRTPTime)
+                        / info->mTimeScale
+                        * 1000000ll
+                        + info->mNormalPlaytimeUs;
+
+                accessUnit->meta()->setInt64("timeUs", nptUs);
+
+                source->queueAccessUnit(accessUnit);
+            }
+            postSourceEOSIfNecessary();
+            break;
+        }
+
+        case MyHandler::kWhatEOS:
+        {
+            int32_t finalResult;
+            CHECK(msg->findInt32("finalResult", &finalResult));
+            CHECK_NE(finalResult, (status_t)OK);
+
+            if (mTSParser != NULL) {
+                signalSourceEOS(finalResult);
+            }
+
+            size_t trackIndex;
+            CHECK(msg->findSize("trackIndex", &trackIndex));
+            CHECK_LT(trackIndex, mTracks.size());
+
+            TrackInfo *info = &mTracks.editItemAt(trackIndex);
+            sp<AnotherPacketSource> source = info->mSource;
+            if (source != NULL) {
+                source->signalEOS(finalResult);
+            }
+
+            break;
+        }
+
+        case MyHandler::kWhatSeekDiscontinuity:
+        {
+            size_t trackIndex;
+            CHECK(msg->findSize("trackIndex", &trackIndex));
+            CHECK_LT(trackIndex, mTracks.size());
+
+            TrackInfo *info = &mTracks.editItemAt(trackIndex);
+            sp<AnotherPacketSource> source = info->mSource;
+            if (source != NULL) {
+                source->queueDiscontinuity(
+                        ATSParser::DISCONTINUITY_TIME,
+                        NULL,
+                        true /* discard */);
+            }
+
+            break;
+        }
+
+        case MyHandler::kWhatNormalPlayTimeMapping:
+        {
+            size_t trackIndex;
+            CHECK(msg->findSize("trackIndex", &trackIndex));
+            CHECK_LT(trackIndex, mTracks.size());
+
+            uint32_t rtpTime;
+            CHECK(msg->findInt32("rtpTime", (int32_t *)&rtpTime));
+
+            int64_t nptUs;
+            CHECK(msg->findInt64("nptUs", &nptUs));
+
+            TrackInfo *info = &mTracks.editItemAt(trackIndex);
+            info->mRTPTime = rtpTime;
+            info->mNormalPlaytimeUs = nptUs;
+            info->mNPTMappingValid = true;
+            break;
+        }
+
+        case SDPLoader::kWhatSDPLoaded:
+        {
+            onSDPLoaded(msg);
+            break;
+        }
+
+        default:
+            TRESPASS();
+    }
+}
+
+void NuPlayer2::RTSPSource::onConnected() {
+    CHECK(mAudioTrack == NULL);
+    CHECK(mVideoTrack == NULL);
+
+    size_t numTracks = mHandler->countTracks();
+    for (size_t i = 0; i < numTracks; ++i) {
+        int32_t timeScale;
+        sp<MetaData> format = mHandler->getTrackFormat(i, &timeScale);
+
+        const char *mime;
+        CHECK(format->findCString(kKeyMIMEType, &mime));
+
+        if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_MPEG2TS)) {
+            // Very special case for MPEG2 Transport Streams.
+            CHECK_EQ(numTracks, 1u);
+
+            mTSParser = new ATSParser;
+            return;
+        }
+
+        bool isAudio = !strncasecmp(mime, "audio/", 6);
+        bool isVideo = !strncasecmp(mime, "video/", 6);
+
+        TrackInfo info;
+        info.mTimeScale = timeScale;
+        info.mRTPTime = 0;
+        info.mNormalPlaytimeUs = 0ll;
+        info.mNPTMappingValid = false;
+
+        if ((isAudio && mAudioTrack == NULL)
+                || (isVideo && mVideoTrack == NULL)) {
+            sp<AnotherPacketSource> source = new AnotherPacketSource(format);
+
+            if (isAudio) {
+                mAudioTrack = source;
+            } else {
+                mVideoTrack = source;
+            }
+
+            info.mSource = source;
+        }
+
+        mTracks.push(info);
+    }
+
+    mState = CONNECTED;
+}
+
+void NuPlayer2::RTSPSource::onSDPLoaded(const sp<AMessage> &msg) {
+    status_t err;
+    CHECK(msg->findInt32("result", &err));
+
+    mSDPLoader.clear();
+
+    if (mDisconnectReplyID != 0) {
+        err = UNKNOWN_ERROR;
+    }
+
+    if (err == OK) {
+        sp<ASessionDescription> desc;
+        sp<RefBase> obj;
+        CHECK(msg->findObject("description", &obj));
+        desc = static_cast<ASessionDescription *>(obj.get());
+
+        AString rtspUri;
+        if (!desc->findAttribute(0, "a=control", &rtspUri)) {
+            ALOGE("Unable to find url in SDP");
+            err = UNKNOWN_ERROR;
+        } else {
+            sp<AMessage> notify = new AMessage(kWhatNotify, this);
+
+            mHandler = new MyHandler(rtspUri.c_str(), notify, mUIDValid, mUID);
+            mLooper->registerHandler(mHandler);
+
+            mHandler->loadSDP(desc);
+        }
+    }
+
+    if (err != OK) {
+        if (mState == CONNECTING) {
+            // We're still in the preparation phase, signal that it
+            // failed.
+            notifyPrepared(err);
+        }
+
+        mState = DISCONNECTED;
+        setError(err);
+
+        if (mDisconnectReplyID != 0) {
+            finishDisconnectIfPossible();
+        }
+    }
+}
+
+void NuPlayer2::RTSPSource::onDisconnected(const sp<AMessage> &msg) {
+    if (mState == DISCONNECTED) {
+        return;
+    }
+
+    status_t err;
+    CHECK(msg->findInt32("result", &err));
+    CHECK_NE(err, (status_t)OK);
+
+    mLooper->unregisterHandler(mHandler->id());
+    mHandler.clear();
+
+    if (mState == CONNECTING) {
+        // We're still in the preparation phase, signal that it
+        // failed.
+        notifyPrepared(err);
+    }
+
+    mState = DISCONNECTED;
+    setError(err);
+
+    if (mDisconnectReplyID != 0) {
+        finishDisconnectIfPossible();
+    }
+}
+
+void NuPlayer2::RTSPSource::finishDisconnectIfPossible() {
+    if (mState != DISCONNECTED) {
+        if (mHandler != NULL) {
+            mHandler->disconnect();
+        } else if (mSDPLoader != NULL) {
+            mSDPLoader->cancel();
+        }
+        return;
+    }
+
+    (new AMessage)->postReply(mDisconnectReplyID);
+    mDisconnectReplyID = 0;
+}
+
+void NuPlayer2::RTSPSource::setError(status_t err) {
+    Mutex::Autolock _l(mBufferingLock);
+    mFinalResult = err;
+}
+
+void NuPlayer2::RTSPSource::startBufferingIfNecessary() {
+    Mutex::Autolock _l(mBufferingLock);
+
+    if (!mBuffering) {
+        mBuffering = true;
+
+        sp<AMessage> notify = dupNotify();
+        notify->setInt32("what", kWhatPauseOnBufferingStart);
+        notify->post();
+    }
+}
+
+bool NuPlayer2::RTSPSource::stopBufferingIfNecessary() {
+    Mutex::Autolock _l(mBufferingLock);
+
+    if (mBuffering) {
+        if (!haveSufficientDataOnAllTracks()) {
+            return false;
+        }
+
+        mBuffering = false;
+
+        sp<AMessage> notify = dupNotify();
+        notify->setInt32("what", kWhatResumeOnBufferingEnd);
+        notify->post();
+    }
+
+    return true;
+}
+
+void NuPlayer2::RTSPSource::finishSeek(status_t err) {
+    if (mSeekReplyID == NULL) {
+        return;
+    }
+    sp<AMessage> seekReply = new AMessage;
+    seekReply->setInt32("err", err);
+    seekReply->postReply(mSeekReplyID);
+    mSeekReplyID = NULL;
+}
+
+}  // namespace android