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agc

This commit is contained in:
Anthony Minessale 2011-02-21 17:16:34 -06:00
parent a79b64ee20
commit e431481d4d
1 changed files with 39 additions and 43 deletions
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82
src/mod/applications/mod_conference/mod_conference.c
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@ -36,7 +36,8 @@
*
*/
#include <switch.h>
//#define INTENSE_DEBUG
#define DEFAULT_AGC_LEVEL 1000
SWITCH_MODULE_LOAD_FUNCTION(mod_conference_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_conference_shutdown);
SWITCH_MODULE_DEFINITION(mod_conference, mod_conference_load, mod_conference_shutdown, NULL);
@ -1965,42 +1966,44 @@ static int noise_gate_check(conference_member_t *member)
return r;
}
static void check_agc_levels(conference_member_t *member)
{
if (!member->avg_score) return;
if (member->avg_score < member->conference->agc_level - 200) {
member->agc_volume_in_level++;
switch_normalize_volume_granular(member->agc_volume_in_level);
} else if (member->avg_score > member->conference->agc_level + 200) {
member->agc_volume_in_level--;
switch_normalize_volume_granular(member->agc_volume_in_level);
}
//} else {
//member->vol_period = (member->read_impl.actual_samples_per_second / member->read_impl.samples_per_packet) * 5;
//}
}
static void clear_avg(conference_member_t *member)
{
//if (member->agc_volume_in_level < -5) {
//member->agc_volume_in_level = 0;
//}
if (member->conference->agc_level) {
check_agc_levels(member);
}
member->avg_score = 0;
member->avg_itt = 0;
member->avg_tally = 0;
member->agc_concur = 0;
}
static void check_agc_levels(conference_member_t *member)
{
int x = 0;
if (!member->avg_score) return;
if (member->avg_score < member->conference->agc_level - 100) {
member->agc_volume_in_level++;
switch_normalize_volume_granular(member->agc_volume_in_level);
x = 1;
} else if (member->avg_score > member->conference->agc_level + 100) {
member->agc_volume_in_level--;
switch_normalize_volume_granular(member->agc_volume_in_level);
x = -1;
}
if (x) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG7,
"AGC %s:%d diff:%d level:%d cur:%d avg:%d vol:%d %s\n",
member->conference->name,
member->id, member->conference->agc_level - member->avg_score, member->conference->agc_level,
member->score, member->avg_score, member->agc_volume_in_level, x > 0 ? "+++" : "---");
clear_avg(member);
}
}
/* marshall frames from the call leg to the conference thread for muxing to other call legs */
static void *SWITCH_THREAD_FUNC conference_loop_input(switch_thread_t *thread, void *obj)
@ -2056,6 +2059,7 @@ static void *SWITCH_THREAD_FUNC conference_loop_input(switch_thread_t *thread, v
if (++hangover_hits >= hangover) {
hangover_hits = hangunder_hits = 0;
switch_clear_flag_locked(member, MFLAG_TALKING);
check_agc_levels(member);
clear_avg(member);
if (test_eflag(member->conference, EFLAG_STOP_TALKING) &&
@ -2075,13 +2079,9 @@ static void *SWITCH_THREAD_FUNC conference_loop_input(switch_thread_t *thread, v
clear_avg(member);
}
if (member->avg_itt > (member->read_impl.actual_samples_per_second / member->read_impl.samples_per_packet) * 3) {
clear_avg(member);
}
/* Check for input volume adjustments */
if (!member->conference->agc_level) {
member->conference->agc_level = 0;
clear_avg(member);
}
@ -2091,16 +2091,10 @@ static void *SWITCH_THREAD_FUNC conference_loop_input(switch_thread_t *thread, v
if ((switch_test_flag(member, MFLAG_CAN_SPEAK) || switch_test_flag(member, MFLAG_MUTE_DETECT))) {
uint32_t energy = 0, i = 0, samples = 0, j = 0;
int16_t *data;
int divisor = 0;
int agc_period = (member->read_impl.actual_samples_per_second / member->read_impl.samples_per_packet) / 4;
data = read_frame->data;
if (!(divisor = member->read_impl.actual_samples_per_second / 8000)) {
divisor = 1;
}
member->score = 0;
if (member->volume_in_level) {
@ -2116,7 +2110,8 @@ static void *SWITCH_THREAD_FUNC conference_loop_input(switch_thread_t *thread, v
energy += abs(data[j]);
j += member->read_impl.number_of_channels;
}
member->score = energy / (samples / divisor);
member->score = energy / samples;
}
if (member->vol_period) {
@ -2219,8 +2214,9 @@ static void *SWITCH_THREAD_FUNC conference_loop_input(switch_thread_t *thread, v
if (++hangover_hits >= hangover) {
hangover_hits = hangunder_hits = 0;
switch_clear_flag_locked(member, MFLAG_TALKING);
check_agc_levels(member);
clear_avg(member);
if (test_eflag(member->conference, EFLAG_STOP_TALKING) &&
switch_event_create_subclass(&event, SWITCH_EVENT_CUSTOM, CONF_EVENT_MAINT) == SWITCH_STATUS_SUCCESS) {
conference_add_event_member_data(member, event);
@ -3500,7 +3496,7 @@ static switch_status_t conf_api_sub_agc(conference_obj_t *conference, switch_str
if (argc > 3) {
level = atoi(argv[3]);
} else {
level = 1400;
level = DEFAULT_AGC_LEVEL;
}
if (level > conference->energy_level) {
@ -6454,7 +6450,7 @@ static conference_obj_t *conference_new(char *name, conf_xml_cfg_t cfg, switch_c
int level = 0;
if (switch_true(auto_gain_level)) {
level = 1400;
level = DEFAULT_AGC_LEVEL;
} else {
level = atoi(auto_gain_level);
}