rohc_decomp_get_rate_limits − Get the rate limits for feedbacks currently configured.
#include <rohc/rohc_decomp.h>
bool
rohc_decomp_get_rate_limits(
const struct rohc_decomp *const decomp,
size_t *const k,
size_t *const n,
size_t *const k_1,
size_t *const n_1,
size_t *const k_2,
size_t *const n_2
);
Get the rate limits for positive feedbacks (ACK) and negative feedbacks (NACK and STATIC−NACK).
There are 3 different rate limits:
• the rate limit to avoid sending the same type of feedback too often: it applies to all feedback types (ACK, NACK, STATIC−NACK) and it is specified by the parameters k and n ;
• the rate limit to avoid sending NACKs too quickly after a sporadic CRC failure: it is specified by the parameters k_1 and n_1 ;
• the rate limit to avoid sending STATIC−NACKs too quickly after a sporadic CRC failure: it is specified by the parameters k_2 and n_2 ;
In all 3 cases above, the k/k_1/k_2 and n/n_1/n_2 parameters define 3 ratios of packets:
• a feedback is sent every k packets out of n packets that cause the same feedback type to be sent ;
• a NACK is not sent before k_1 packets out of n_1 packets failed because of a CRC failure in the Full Context state ;
• a STATIC−NACK is not sent before k_1 packets out of n_1 packets failed because of a CRC failure in the Static Context state ;
The default values are:
• k = 1 and n = default pRTT (see rohc_decomp_set_prtt for details)
• k_1 = 30 and n_1 = 100, ie. 30%
• k_2 = 30 and n_2 = 100, ie. 30%
If your network streams and conditions differ, change the default value.
|
decomp |
The ROHC decompressor |
k [output]
The k rate−limit parameter to avoid sending feedback too often
n [output]
The n rate−limit parameter to avoid sending feedback too often
k_1 [output]
The k_1 rate−limit param. to avoid sending NACKs too quickly
n_1 [output]
The n_1 rate−limit param. to avoid sending NACKs too quickly
k_2 [output]
The k_2 rate−limit param. to avoid sending STATIC−NACKs too quickly
n_2 [output]
The n_2 rate−limit param. to avoid sending STATIC−NACKs too quickly
true if rate-limits were successfully retrieved, false otherwise
rohc_decomp.h(3), rohc_decomp_set_rate_limits(3), rohc_decomp_set_prtt(3), rohc_decomp_get_prtt(3), rohc_decompress3(3)