Merge "HLS: preserve old format in onChangeConfiguration2" into mnc-dev

        mLastDequeuedTimeUs = timeUs;

        for (size_t i = 0; i < mPacketSources.size(); i++) {

            mPacketSources.editValueAt(i)->clear();

            sp<AnotherPacketSource> packetSource = mPacketSources.editValueAt(i);

            sp<MetaData> format = packetSource->getFormat();

            packetSource->clear();

            // Set a tentative format here such that HTTPLiveSource will always have

            // a format available when NuPlayer queries. Without an available video

            // format when setting a surface NuPlayer might disable video decoding

            // altogether. The tentative format will be overwritten by the

            // authoritative (and possibly same) format once content from the new

            // position is dequeued.

            packetSource->setFormat(format);

        }

        for (size_t i = 0; i < kMaxStreams; ++i) {