Merge "NuPlayer: return error when neither audio nor video source has metadata." into nyc-mr1-dev

    }

    sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);

    sp<MetaData> videoMeta = mSource->getFormatMeta(false /* audio */);

    if (audioMeta == NULL && videoMeta == NULL) {

        ALOGE("no metadata for either audio or video source");

        mSource->stop();

        mSourceStarted = false;

        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, ERROR_MALFORMED);

        return;

    }

    ALOGV_IF(audioMeta == NULL, "no metadata for audio source");  // video only stream

    audio_stream_type_t streamType = AUDIO_STREAM_MUSIC;

    if (mAudioSink != NULL) {

        streamType = mAudioSink->getAudioStreamType();