diff options
Diffstat (limited to 'src/common/amr.c')
| -rw-r--r-- | src/common/amr.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/src/common/amr.c b/src/common/amr.c index 56ed4302..b5d2c371 100644 --- a/src/common/amr.c +++ b/src/common/amr.c @@ -22,7 +22,8 @@ void amr_log_mr_conf(int ss, int logl, const char *pfx, LOGPC(ss, logl, "\n"); } -int get_amr_mode_idx(const struct amr_multirate_conf *amr_mrc, uint8_t cmi) +static inline int get_amr_mode_idx(const struct amr_multirate_conf *amr_mrc, + uint8_t cmi) { unsigned int i; for (i = 0; i < amr_mrc->num_modes; i++) { @@ -32,6 +33,46 @@ int get_amr_mode_idx(const struct amr_multirate_conf *amr_mrc, uint8_t cmi) return -EINVAL; } +static inline uint8_t set_cmr_mode_idx(const struct amr_multirate_conf *amr_mrc, + uint8_t cmr) +{ + int rc; + + /* Codec Mode Request is in upper 4 bits of RTP payload header, + * and we simply copy the CMR into the CMC */ + if (cmr == 0xF) { + /* FIXME: we need some state about the last codec mode */ + return 0; + } + + rc = get_amr_mode_idx(amr_mrc, cmr); + if (rc < 0) { + /* FIXME: we need some state about the last codec mode */ + LOGP(DRTP, LOGL_INFO, "RTP->L1: overriding CMR %u\n", cmr); + return 0; + } + return rc; +} + +static inline uint8_t set_cmi_mode_idx(const struct amr_multirate_conf *amr_mrc, + uint8_t cmi) +{ + int rc = get_amr_mode_idx(amr_mrc, cmi); + if (rc < 0) { + LOGP(DRTP, LOGL_ERROR, "AMR CMI %u not part of AMR MR set\n", + cmi); + return 0; + } + return rc; +} + +void amr_set_mode_pref(uint8_t *data, const struct amr_multirate_conf *amr_mrc, + uint8_t cmi, uint8_t cmr) +{ + data[0] = set_cmi_mode_idx(amr_mrc, cmi); + data[1] = set_cmr_mode_idx(amr_mrc, cmr); +} + /* parse a GSM 04.08 MultiRate Config IE (10.5.2.21aa) in a more * comfortable internal data structure */ int amr_parse_mr_conf(struct amr_multirate_conf *amr_mrc, |