Ejemplo n.º 1
0
void DirectRenderer::onDecoderNotify(const sp<AMessage> &msg) {
    size_t trackIndex;
    CHECK(msg->findSize("trackIndex", &trackIndex));

    int32_t what;
    CHECK(msg->findInt32("what", &what));

    switch (what) {
        case DecoderContext::kWhatOutputBufferReady:
        {
            size_t index;
            CHECK(msg->findSize("index", &index));

            int64_t timeUs;
            CHECK(msg->findInt64("timeUs", &timeUs));

            sp<ABuffer> buffer;
            CHECK(msg->findBuffer("buffer", &buffer));

            queueOutputBuffer(trackIndex, index, timeUs, buffer);
            break;
        }

        default:
            TRESPASS();
    }
}
void NuCachedSource2::onRead(const sp<AMessage> &msg) {
    ALOGV("onRead");

    int64_t offset;
    CHECK(msg->findInt64("offset", &offset));

    void *data;
    CHECK(msg->findPointer("data", &data));

    size_t size;
    CHECK(msg->findSize("size", &size));

    ssize_t result = readInternal(offset, data, size);

    if (result == -EAGAIN) {
        msg->post(50000);
        return;
    }

    Mutex::Autolock autoLock(mLock);
    if (mDisconnecting) {
        mCondition.signal();
        return;
    }

    CHECK(mAsyncResult == NULL);

    mAsyncResult = new AMessage;
    mAsyncResult->setInt32("result", result);

    mCondition.signal();
}
Ejemplo n.º 3
0
void DirectRenderer::onSetFormat(const sp<AMessage> &msg) {
    size_t trackIndex;
    CHECK(msg->findSize("trackIndex", &trackIndex));

    sp<AMessage> format;
    CHECK(msg->findMessage("format", &format));

    internalSetFormat(trackIndex, format);
}
Ejemplo n.º 4
0
void DirectRenderer::onQueueAccessUnit(const sp<AMessage> &msg) {
    size_t trackIndex;
    CHECK(msg->findSize("trackIndex", &trackIndex));

    sp<ABuffer> accessUnit;
    CHECK(msg->findBuffer("accessUnit", &accessUnit));

    CHECK_LT(trackIndex, 2u);
    CHECK(mDecoderContext[trackIndex] != NULL);

    mDecoderContext[trackIndex]->queueInputBuffer(accessUnit);
}
Ejemplo n.º 5
0
void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
    switch (msg->what()) {
        case kWhatSetDataSource:
        {
            ALOGV("kWhatSetDataSource");

            CHECK(mSource == NULL);

            sp<RefBase> obj;
            CHECK(msg->findObject("source", &obj));

            mSource = static_cast<Source *>(obj.get());

            looper()->registerHandler(mSource);

            CHECK(mDriver != NULL);
            sp<NuPlayerDriver> driver = mDriver.promote();
            if (driver != NULL) {
                driver->notifySetDataSourceCompleted(OK);
            }
            break;
        }

        case kWhatPrepare:
        {
            mSource->prepareAsync();
            break;
        }

        case kWhatGetTrackInfo:
        {
            uint32_t replyID;
            CHECK(msg->senderAwaitsResponse(&replyID));

            status_t err = INVALID_OPERATION;
            if (mSource != NULL) {
                Parcel* reply;
                CHECK(msg->findPointer("reply", (void**)&reply));
                err = mSource->getTrackInfo(reply);
            }

            sp<AMessage> response = new AMessage;
            response->setInt32("err", err);

            response->postReply(replyID);
            break;
        }

        case kWhatSelectTrack:
        {
            uint32_t replyID;
            CHECK(msg->senderAwaitsResponse(&replyID));

            status_t err = INVALID_OPERATION;
            if (mSource != NULL) {
                size_t trackIndex;
                int32_t select;
                CHECK(msg->findSize("trackIndex", &trackIndex));
                CHECK(msg->findInt32("select", &select));
                err = mSource->selectTrack(trackIndex, select);
            }

            sp<AMessage> response = new AMessage;
            response->setInt32("err", err);

            response->postReply(replyID);
            break;
        }

        case kWhatPollDuration:
        {
            int32_t generation;
            CHECK(msg->findInt32("generation", &generation));

            if (generation != mPollDurationGeneration) {
                // stale
                break;
            }

            int64_t durationUs;
            if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
                sp<NuPlayerDriver> driver = mDriver.promote();
                if (driver != NULL) {
                    driver->notifyDuration(durationUs);
                }
            }

            msg->post(1000000ll);  // poll again in a second.
            break;
        }

        case kWhatSetVideoNativeWindow:
        {
            ALOGV("kWhatSetVideoNativeWindow");

            mDeferredActions.push_back(
                    new ShutdownDecoderAction(
                        false /* audio */, true /* video */));

            sp<RefBase> obj;
            CHECK(msg->findObject("native-window", &obj));

            mDeferredActions.push_back(
                    new SetSurfaceAction(
                        static_cast<NativeWindowWrapper *>(obj.get())));

            if (obj != NULL) {
                // If there is a new surface texture, instantiate decoders
                // again if possible.
                mDeferredActions.push_back(
                        new SimpleAction(&NuPlayer::performScanSources));
            }

            processDeferredActions();
            break;
        }

        case kWhatSetAudioSink:
        {
            ALOGV("kWhatSetAudioSink");

            sp<RefBase> obj;
            CHECK(msg->findObject("sink", &obj));

            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
            break;
        }

        case kWhatStart:
        {
            ALOGV("kWhatStart");

            mVideoIsAVC = false;
            mAudioEOS = false;
            mVideoEOS = false;
            mSkipRenderingAudioUntilMediaTimeUs = -1;
            mSkipRenderingVideoUntilMediaTimeUs = -1;
            mVideoLateByUs = 0;
            mNumFramesTotal = 0;
            mNumFramesDropped = 0;
            mStarted = true;

            mSource->start();

            uint32_t flags = 0;

            if (mSource->isRealTime()) {
                flags |= Renderer::FLAG_REAL_TIME;
            }

            mRenderer = new Renderer(
                    mAudioSink,
                    new AMessage(kWhatRendererNotify, id()),
                    flags);

            looper()->registerHandler(mRenderer);

            postScanSources();
            break;
        }

        case kWhatScanSources:
        {
            int32_t generation;
            CHECK(msg->findInt32("generation", &generation));
            if (generation != mScanSourcesGeneration) {
                // Drop obsolete msg.
                break;
            }

            mScanSourcesPending = false;

            ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
                 mAudioDecoder != NULL, mVideoDecoder != NULL);

            bool mHadAnySourcesBefore =
                (mAudioDecoder != NULL) || (mVideoDecoder != NULL);

            if (mNativeWindow != NULL) {
                instantiateDecoder(false, &mVideoDecoder);
            }

            if (mAudioSink != NULL) {
                instantiateDecoder(true, &mAudioDecoder);
            }

            if (!mHadAnySourcesBefore
                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
                // This is the first time we've found anything playable.

                if (mSourceFlags & Source::FLAG_DYNAMIC_DURATION) {
                    schedulePollDuration();
                }
            }

            status_t err;
            if ((err = mSource->feedMoreTSData()) != OK) {
                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
                    // We're not currently decoding anything (no audio or
                    // video tracks found) and we just ran out of input data.

                    if (err == ERROR_END_OF_STREAM) {
                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
                    } else {
                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
                    }
                }
                break;
            }

            if ((mAudioDecoder == NULL && mAudioSink != NULL)
                    || (mVideoDecoder == NULL && mNativeWindow != NULL)) {
                msg->post(100000ll);
                mScanSourcesPending = true;
            }
            break;
        }

        case kWhatVideoNotify:
        case kWhatAudioNotify:
        {
            bool audio = msg->what() == kWhatAudioNotify;

            sp<AMessage> codecRequest;
            CHECK(msg->findMessage("codec-request", &codecRequest));

            int32_t what;
            CHECK(codecRequest->findInt32("what", &what));

            if (what == ACodec::kWhatFillThisBuffer) {
                status_t err = feedDecoderInputData(
                        audio, codecRequest);

                if (err == -EWOULDBLOCK) {
                    if (mSource->feedMoreTSData() == OK) {
                        msg->post(10000ll);
                    }
                }
            } else if (what == ACodec::kWhatEOS) {
                int32_t err;
                CHECK(codecRequest->findInt32("err", &err));

                if (err == ERROR_END_OF_STREAM) {
                    ALOGV("got %s decoder EOS", audio ? "audio" : "video");
                } else {
                    ALOGV("got %s decoder EOS w/ error %d",
                         audio ? "audio" : "video",
                         err);
                }

                mRenderer->queueEOS(audio, err);
            } else if (what == ACodec::kWhatFlushCompleted) {
                bool needShutdown;

                if (audio) {
                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
                    mFlushingAudio = FLUSHED;
                } else {
                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
                    mFlushingVideo = FLUSHED;

                    mVideoLateByUs = 0;
                }

                ALOGV("decoder %s flush completed", audio ? "audio" : "video");

                if (needShutdown) {
                    ALOGV("initiating %s decoder shutdown",
                         audio ? "audio" : "video");

                    (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();

                    if (audio) {
                        mFlushingAudio = SHUTTING_DOWN_DECODER;
                    } else {
                        mFlushingVideo = SHUTTING_DOWN_DECODER;
                    }
                }

                finishFlushIfPossible();
            } else if (what == ACodec::kWhatOutputFormatChanged) {
                if (audio) {
                    int32_t numChannels;
                    CHECK(codecRequest->findInt32(
                                "channel-count", &numChannels));

                    int32_t sampleRate;
                    CHECK(codecRequest->findInt32("sample-rate", &sampleRate));

                    ALOGV("Audio output format changed to %d Hz, %d channels",
                         sampleRate, numChannels);

                    mAudioSink->close();

                    audio_output_flags_t flags;
                    int64_t durationUs;
                    // FIXME: we should handle the case where the video decoder
                    // is created after we receive the format change indication.
                    // Current code will just make that we select deep buffer
                    // with video which should not be a problem as it should
                    // not prevent from keeping A/V sync.
                    if (mVideoDecoder == NULL &&
                            mSource->getDuration(&durationUs) == OK &&
                            durationUs
                                > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
                        flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
                    } else {
                        flags = AUDIO_OUTPUT_FLAG_NONE;
                    }

                    int32_t channelMask;
                    if (!codecRequest->findInt32("channel-mask", &channelMask)) {
                        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
                    }

                    CHECK_EQ(mAudioSink->open(
                                sampleRate,
                                numChannels,
                                (audio_channel_mask_t)channelMask,
                                AUDIO_FORMAT_PCM_16_BIT,
                                8 /* bufferCount */,
                                NULL,
                                NULL,
                                flags),
                             (status_t)OK);
                    mAudioSink->start();

                    mRenderer->signalAudioSinkChanged();
                } else {
                    // video

                    int32_t width, height;
                    CHECK(codecRequest->findInt32("width", &width));
                    CHECK(codecRequest->findInt32("height", &height));

                    int32_t cropLeft, cropTop, cropRight, cropBottom;
                    CHECK(codecRequest->findRect(
                                "crop",
                                &cropLeft, &cropTop, &cropRight, &cropBottom));

                    int32_t displayWidth = cropRight - cropLeft + 1;
                    int32_t displayHeight = cropBottom - cropTop + 1;

                    ALOGV("Video output format changed to %d x %d "
                         "(crop: %d x %d @ (%d, %d))",
                         width, height,
                         displayWidth,
                         displayHeight,
                         cropLeft, cropTop);

                    sp<AMessage> videoInputFormat =
                        mSource->getFormat(false /* audio */);

                    // Take into account sample aspect ratio if necessary:
                    int32_t sarWidth, sarHeight;
                    if (videoInputFormat->findInt32("sar-width", &sarWidth)
                            && videoInputFormat->findInt32(
                                "sar-height", &sarHeight)) {
                        ALOGV("Sample aspect ratio %d : %d",
                              sarWidth, sarHeight);

                        displayWidth = (displayWidth * sarWidth) / sarHeight;

                        ALOGV("display dimensions %d x %d",
                              displayWidth, displayHeight);
                    }

                    notifyListener(
                            MEDIA_SET_VIDEO_SIZE, displayWidth, displayHeight);
                }
            } else if (what == ACodec::kWhatShutdownCompleted) {
                ALOGV("%s shutdown completed", audio ? "audio" : "video");
                if (audio) {
                    mAudioDecoder.clear();

                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
                    mFlushingAudio = SHUT_DOWN;
                } else {
                    mVideoDecoder.clear();

                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
                    mFlushingVideo = SHUT_DOWN;
                }

                finishFlushIfPossible();
            } else if (what == ACodec::kWhatError) {
                ALOGE("Received error from %s decoder, aborting playback.",
                     audio ? "audio" : "video");

                mRenderer->queueEOS(audio, UNKNOWN_ERROR);
            } else if (what == ACodec::kWhatDrainThisBuffer) {
                renderBuffer(audio, codecRequest);
            } else if (what != ACodec::kWhatComponentAllocated
                    && what != ACodec::kWhatComponentConfigured
                    && what != ACodec::kWhatBuffersAllocated) {
                ALOGV("Unhandled codec notification %d '%c%c%c%c'.",
                      what,
                      what >> 24,
                      (what >> 16) & 0xff,
                      (what >> 8) & 0xff,
                      what & 0xff);
            }

            break;
        }

        case kWhatRendererNotify:
        {
            int32_t what;
            CHECK(msg->findInt32("what", &what));

            if (what == Renderer::kWhatEOS) {
                int32_t audio;
                CHECK(msg->findInt32("audio", &audio));

                int32_t finalResult;
                CHECK(msg->findInt32("finalResult", &finalResult));

                if (audio) {
                    mAudioEOS = true;
                } else {
                    mVideoEOS = true;
                }

                if (finalResult == ERROR_END_OF_STREAM) {
                    ALOGV("reached %s EOS", audio ? "audio" : "video");
                } else {
                    ALOGE("%s track encountered an error (%d)",
                         audio ? "audio" : "video", finalResult);

                    notifyListener(
                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
                }

                if ((mAudioEOS || mAudioDecoder == NULL)
                        && (mVideoEOS || mVideoDecoder == NULL)) {
                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
                }
            } else if (what == Renderer::kWhatPosition) {
                int64_t positionUs;
                CHECK(msg->findInt64("positionUs", &positionUs));

                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));

                if (mDriver != NULL) {
                    sp<NuPlayerDriver> driver = mDriver.promote();
                    if (driver != NULL) {
                        driver->notifyPosition(positionUs);

                        driver->notifyFrameStats(
                                mNumFramesTotal, mNumFramesDropped);
                    }
                }
            } else if (what == Renderer::kWhatFlushComplete) {
                int32_t audio;
                CHECK(msg->findInt32("audio", &audio));

                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
            } else if (what == Renderer::kWhatVideoRenderingStart) {
                notifyListener(MEDIA_INFO, MEDIA_INFO_RENDERING_START, 0);
            } else if (what == Renderer::kWhatMediaRenderingStart) {
                ALOGV("media rendering started");
                notifyListener(MEDIA_STARTED, 0, 0);
            }
            break;
        }

        case kWhatMoreDataQueued:
        {
            break;
        }

        case kWhatReset:
        {
            ALOGV("kWhatReset");

            mDeferredActions.push_back(
                    new ShutdownDecoderAction(
                        true /* audio */, true /* video */));

            mDeferredActions.push_back(
                    new SimpleAction(&NuPlayer::performReset));

            processDeferredActions();
            break;
        }

        case kWhatSeek:
        {
            int64_t seekTimeUs;
            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));

            ALOGV("kWhatSeek seekTimeUs=%lld us", seekTimeUs);

            mDeferredActions.push_back(
                    new SimpleAction(&NuPlayer::performDecoderFlush));

            mDeferredActions.push_back(new SeekAction(seekTimeUs));

            processDeferredActions();
            break;
        }

        case kWhatPause:
        {
            CHECK(mRenderer != NULL);
            mSource->pause();
            mRenderer->pause();
            break;
        }

        case kWhatResume:
        {
            CHECK(mRenderer != NULL);
            mSource->resume();
            mRenderer->resume();
            break;
        }

        case kWhatSourceNotify:
        {
            onSourceNotify(msg);
            break;
        }

        default:
            TRESPASS();
            break;
    }
Ejemplo n.º 6
0
void RTSPSource::onMessageReceived(const sp<AMessage> &msg) {
    if (msg->what() == kWhatDisconnect) {
        uint32_t replyID;
        CHECK(msg->senderAwaitsResponse(&replyID));

        mDisconnectReplyID = replyID;
        finishDisconnectIfPossible();
        return;
    } else if (msg->what() == kWhatPerformSeek) {
        int32_t generation;
        CHECK(msg->findInt32("generation", &generation));

        if (generation != mSeekGeneration) {
            // obsolete.
            return;
        }

        int64_t seekTimeUs;
        CHECK(msg->findInt64("timeUs", &seekTimeUs));

        performSeek(seekTimeUs);
        return;
    } else if (msg->what() == kWhatPerformPlay) {
        int64_t playTimeUs;
        CHECK(msg->findInt64("timeUs", &playTimeUs));
        performPlay(playTimeUs);
        return;
    } else if (msg->what() == kWhatPerformPause) {
        performPause();
        return;
    } else if (msg->what() == kWhatPerformResume) {
        performResume();
        return;
    } else if (msg->what() == kWhatPerformSuspend) {
        performSuspend();
        return;
    }

    CHECK_EQ(msg->what(), (uint32_t)kWhatNotify);

    int32_t what;
    int32_t isSeekable = 0;
    CHECK(msg->findInt32("what", &what));

    switch (what) {
        case RtspConnectionHandler::kWhatConnected:
            CHECK(msg->findInt32("isSeekable", &isSeekable));
            onConnected((isSeekable ? true:false));
            break;

        case RtspConnectionHandler::kWhatDisconnected:
            onDisconnected(msg);
            break;

        case RtspConnectionHandler::kWhatSeekDone:
        {
            mState = PLAYING;
            // Even if we have reset mLatestPausedUnit in performSeek(),
            // it's still possible that kWhatPausedDone event may arrive
            // because of previous performPause() command.
            for (size_t i = 0; i < mTracks.size(); ++i) {
                TrackInfo *info = &mTracks.editItemAt(i);
                info->mLatestPausedUnit = 0;
            }
            mLatestPausedUnit = 0;
            break;
        }

        case RtspConnectionHandler::kWhatPausedDone:
        {
            for (size_t i = 0; i < mTracks.size(); ++i) {
                TrackInfo *info = &mTracks.editItemAt(i);
                info->mLatestPausedUnit = info->mLatestReceivedUnit;
            }

            // The timestamp after a 'Pause' is done is the earliest
            // timestamp among all of the latest received units.
            TrackInfo *info = &mTracks.editItemAt(0);
            mLatestPausedUnit = info->mLatestReceivedUnit;
            for (size_t i = 1; i < mTracks.size(); ++i) {
                TrackInfo *info = &mTracks.editItemAt(i);
                if (mLatestPausedUnit > info->mLatestReceivedUnit) {
                    mLatestPausedUnit = info->mLatestReceivedUnit;
                }
            }
            break;
        }

        case RtspConnectionHandler::kWhatAccessUnit:
        {
            size_t trackIndex;
            CHECK(msg->findSize("trackIndex", &trackIndex));
            CHECK_LT(trackIndex, mTracks.size());

            sp<RefBase> obj;
            CHECK(msg->findObject("accessUnit", &obj));

            sp<ABuffer> accessUnit = static_cast<ABuffer *>(obj.get());

            int32_t damaged;
            if (accessUnit->meta()->findInt32("damaged", &damaged)
                    && damaged) {
                LOGI("dropping damaged access unit.");
                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. Assume the first packets correspond
                    // to time 0.

                    LOGV("This is a live stream, assuming time = 0");

                    info->mRTPTime = rtpTime;
                    info->mNormalPlaytimeUs = 0ll;
                    info->mNPTMappingValid = true;
                }

                int64_t nptUs =
                    ((double)rtpTime - (double)info->mRTPTime)
                        / info->mTimeScale
                        * 1000000ll
                        + info->mNormalPlaytimeUs;

                accessUnit->meta()->setInt64("timeUs", nptUs);
                info->mLatestReceivedUnit = nptUs;
                // Drop the frames that are older than the frames in the queue.
                if (info->mLatestPausedUnit && (int64_t)info->mLatestPausedUnit > nptUs) {
                  break;
                }
                source->queueAccessUnit(accessUnit);
            }

            onTrackDataAvailable(trackIndex);
            break;
        }

        case RtspConnectionHandler::kWhatEOS:
        {
            size_t trackIndex;
            CHECK(msg->findSize("trackIndex", &trackIndex));
            CHECK_LT(trackIndex, mTracks.size());

            int32_t finalResult;
            CHECK(msg->findInt32("finalResult", &finalResult));
            CHECK_NE(finalResult, (status_t)OK);

            TrackInfo *info = &mTracks.editItemAt(trackIndex);
            sp<AnotherPacketSource> source = info->mSource;
            if (source != NULL) {
                source->signalEOS(finalResult);
            }

            break;
        }

        case RtspConnectionHandler::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_SEEK, NULL);
            }

            break;
        }

        case RtspConnectionHandler::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 RtspConnectionHandler::kWhatTryTCPInterleaving:
        {
            // By default, we will request to deliver RTP over UDP. If the play
            // request timed out and we didn't receive any RTP packet, we will
            // fail back to use RTP interleaved in the existing RTSP/TCP
            // connection. And in this case, we have to explicitly perform
            // another play event to request the server to start streaming
            // again.
            int64_t playTimeUs;
            if (!msg->findInt64("timeUs", &playTimeUs)) {
                playTimeUs = 0;
            }
            performPlay(playTimeUs);
            break;
        }

        default:
            TRESPASS();
    }
}
Ejemplo n.º 7
0
void ARTPSession::onMessageReceived(const sp<AMessage> &msg) {
    switch (msg->what()) {
        case kWhatAccessUnitComplete:
        {
            int32_t firstRTCP;
            if (msg->findInt32("first-rtcp", &firstRTCP)) {
                // There won't be an access unit here, it's just a notification
                // that the data communication worked since we got the first
                // rtcp packet.
                break;
            }

            size_t trackIndex;
            CHECK(msg->findSize("track-index", &trackIndex));

            int32_t eos;
            if (msg->findInt32("eos", &eos) && eos) {
                TrackInfo *info = &mTracks.editItemAt(trackIndex);
                info->mPacketSource->signalEOS(ERROR_END_OF_STREAM);
                break;
            }

            sp<RefBase> obj;
            CHECK(msg->findObject("access-unit", &obj));

            sp<ABuffer> accessUnit = static_cast<ABuffer *>(obj.get());

            uint64_t ntpTime;
            CHECK(accessUnit->meta()->findInt64(
                        "ntp-time", (int64_t *)&ntpTime));

#if 0
#if 0
            printf("access unit complete size=%d\tntp-time=0x%016llx\n",
                   accessUnit->size(), ntpTime);
#else
            LOGI("access unit complete, size=%d, ntp-time=%llu",
                 accessUnit->size(), ntpTime);
            hexdump(accessUnit->data(), accessUnit->size());
#endif
#endif

#if 0
            CHECK_GE(accessUnit->size(), 5u);
            CHECK(!memcmp("\x00\x00\x00\x01", accessUnit->data(), 4));
            unsigned x = accessUnit->data()[4];

            LOGI("access unit complete: nalType=0x%02x, nalRefIdc=0x%02x",
                 x & 0x1f, (x & 0x60) >> 5);
#endif

            accessUnit->meta()->setInt64("ntp-time", ntpTime);
            accessUnit->meta()->setInt64("timeUs", 0);

#if 0
            int32_t damaged;
            if (accessUnit->meta()->findInt32("damaged", &damaged)
                    && damaged != 0) {
                LOGI("ignoring damaged AU");
            } else
#endif
            {
                TrackInfo *info = &mTracks.editItemAt(trackIndex);
                info->mPacketSource->queueAccessUnit(accessUnit);
            }
            break;
        }

        default:
            TRESPASS();
            break;
    }
}
void NuPlayer::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;
        CHECK(msg->findInt64("timeUs", &seekTimeUs));

        performSeek(seekTimeUs);
        return;
    } else if (msg->what() == kWhatPollBuffering) {
        onPollBuffering();
        return;
    } else if (msg->what() == kWhatSignalEOS) {
        onSignalEOS(msg);
        return;
    }

    CHECK_EQ(msg->what(), (int)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();
    }
}