Method Seek

framework/data_source/proxyDataSource.cpp:37–44

    }

    int64_t proxyDataSource::Seek(int64_t offset, int whence)
    {
        if (mSeek) {
            return mSeek(mUserArg, offset, whence);
        }

        return -1;
    }

    int proxyDataSource::Read(void *buf, size_t nbyte)
    {