[automerger] stagefright: send EOS to encoder for thumbnail extraction am:...

            err = mSource->read(&mediaBuffer, &mReadOptions);

            mReadOptions.clearSeekTo();

            if (err != OK) {

                ALOGW("Input Error or EOS");

                mHaveMoreInputs = false;

                if (!mFirstSample && err == ERROR_END_OF_STREAM) {

                    (void)mDecoder->queueInputBuffer(

                            index, 0, 0, 0, MediaCodec::BUFFER_FLAG_EOS);

                    err = OK;

                } else {

                    ALOGW("Input Error: err=%d", err);

                }

                break;

            }