Release v1.5.1 on 2021-02-24.

1. 5785a4a codec: Add functions for AMR s->d bits and d->s bits by Harald Welte · 4 years, 1 month ago
2. 3a5917b gsm690: Fix amr speech bit length table by Philipp Maier · 4 years, 3 months ago
3. ae140bc ecu_fr: increase test coverage for FR ECU implementation by Philipp Maier · 4 years, 9 months ago
4. 750d831 codec/ecu: Introduce new generic Error Concealment Unit abstraction by Harald Welte · 4 years, 10 months ago
5. 421068e tests: codec: ecu_fr: Add buffer with unequal XMAXC values by Pau Espin Pedrol · 6 years ago
6. bbccca6 tests: codec: ecu_fr: Print XMAXC fields by Pau Espin Pedrol · 6 years ago
7. 40def49 libosmocodec: implement ECU (Error Concealment Unit) for FR by Philipp Maier · 6 years ago
8. e08da97 Fix/Update copyright notices; Add SPDX annotation by Harald Welte · 7 years ago
9. 43058ef Fix wrongful GSM FR codec SID frame detection in DTX. by Jean-Francois Dionne · 7 years ago
10. 3851e8e introduce proper test case for GSM FR detection by Harald Welte · 7 years ago
11. d02c8af DTX: fix AMR SID-FIRST detection by Jean-Francois Dionne · 7 years ago
12. e9e5f8e Add null-pointer check to osmo_amr_rtp_dec() by Max · 8 years ago
13. ec8f192 Add functions to detect HR/FR SID frames by Max · 8 years ago
14. 92db150 Add helper functions for AMR codec by Max · 8 years ago