| 796 | } |
| 797 | |
| 798 | int uhd_device::writeSamples(short *buf, int len, bool *underrun, |
| 799 | unsigned long long timestamp,bool isControl) |
| 800 | { |
| 801 | uhd::tx_metadata_t metadata; |
| 802 | metadata.has_time_spec = true; |
| 803 | metadata.start_of_burst = false; |
| 804 | metadata.end_of_burst = false; |
| 805 | metadata.time_spec = convert_time(timestamp, tx_rate); |
| 806 | |
| 807 | *underrun = false; |
| 808 | |
| 809 | // No control packets |
| 810 | if (isControl) { |
| 811 | LOG(ERR) << "Control packets not supported"; |
| 812 | return 0; |
| 813 | } |
| 814 | |
| 815 | // Drop a fixed number of packets (magic value) |
| 816 | if (!aligned) { |
| 817 | drop_cnt++; |
| 818 | |
| 819 | if (drop_cnt == 1) { |
| 820 | LOG(DEBUG) << "Aligning transmitter: stop burst"; |
| 821 | *underrun = true; |
| 822 | metadata.end_of_burst = true; |
| 823 | } else if (drop_cnt < 30) { |
| 824 | LOG(DEBUG) << "Aligning transmitter: packet advance"; |
| 825 | return len; |
| 826 | } else { |
| 827 | LOG(DEBUG) << "Aligning transmitter: start burst"; |
| 828 | metadata.start_of_burst = true; |
| 829 | aligned = true; |
| 830 | drop_cnt = 0; |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | size_t num_smpls = tx_stream->send(buf, len, metadata); |
| 835 | |
| 836 | if (num_smpls != (unsigned) len) { |
| 837 | LOG(ALERT) << "UHD: Device send timed out"; |
| 838 | LOG(ALERT) << "UHD: Version " << uhd::get_version_string(); |
| 839 | LOG(ALERT) << "UHD: Unrecoverable error, exiting..."; |
| 840 | exit(-1); |
| 841 | } |
| 842 | |
| 843 | return num_smpls; |
| 844 | } |
| 845 | |
| 846 | bool uhd_device::updateAlignment(TIMESTAMP timestamp) |
| 847 | { |
no test coverage detected