Merge cherrypicks of [19459610] into tm-d1-release.

int32_t AAVCAssembler::pickStartSeq(const Queue *queue,

        uint32_t first, int64_t play, int64_t jit) {

    CHECK(!queue->empty());

    // pick the first sequence number has the start bit.

    sp<ABuffer> buffer = *(queue->begin());

    int32_t firstSeqNo = buffer->int32Data();

    // This only works for FU-A type & non-start sequence

    unsigned nalType = buffer->data()[0] & 0x1f;

    if (nalType != 28 || buffer->data()[1] & 0x80) {

    int32_t nalType = buffer->size() >= 1 ? buffer->data()[0] & 0x1f : -1;

    if (nalType != 28 || (buffer->size() >= 2 && buffer->data()[1] & 0x80)) {

        return firstSeqNo;

    }

        if (rtpTime + jit >= play) {

            break;

        }

        if ((data[1] & 0x80)) {

        if (it->size() >= 2 && (data[1] & 0x80)) {

            const int32_t seqNo = it->int32Data();

            ALOGE("finding [HEAD] pkt. \t Seq# (%d ~ )[%d", firstSeqNo, seqNo);

            firstSeqNo = seqNo;