forked from Mirrors/freeswitch
Merge pull request #1583 in FS/freeswitch from FS-11387 to master
* commit '4edd8a97519faf11f9df0b46d067d39e23d92841': FS-11387 [mod_loopback] add null endpoint
This commit is contained in:
Mike Jerris
commit
b6e0618a61
@ -1,6 +1,6 @@
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/*
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* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
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* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
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* Copyright (C) 2005-2018, Anthony Minessale II <anthm@freeswitch.org>
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*
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* Version: MPL 1.1
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*
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@ -1207,6 +1207,353 @@ static switch_io_routines_t channel_io_routines = {
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SWITCH_STANDARD_APP(unloop_function) { /* NOOP */}
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static switch_endpoint_interface_t *null_endpoint_interface = NULL;
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struct null_private_object {
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switch_core_session_t *session;
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switch_channel_t *channel;
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switch_codec_t read_codec;
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switch_codec_t write_codec;
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switch_timer_t timer;
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switch_caller_profile_t *caller_profile;
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switch_frame_t read_frame;
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int16_t *null_buf;
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};
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typedef struct null_private_object null_private_t;
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static switch_status_t null_channel_on_init(switch_core_session_t *session);
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static switch_status_t null_channel_on_destroy(switch_core_session_t *session);
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static switch_call_cause_t null_channel_outgoing_channel(switch_core_session_t *session, switch_event_t *var_event,
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switch_caller_profile_t *outbound_profile,
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switch_core_session_t **new_session, switch_memory_pool_t **pool, switch_originate_flag_t flags,
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switch_call_cause_t *cancel_cause);
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static switch_status_t null_channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id);
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static switch_status_t null_channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id);
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static switch_status_t null_channel_kill_channel(switch_core_session_t *session, int sig);
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static switch_status_t null_tech_init(null_private_t *tech_pvt, switch_core_session_t *session)
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{
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const char *iananame = "L16";
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uint32_t rate = 8000;
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uint32_t interval = 20;
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switch_status_t status = SWITCH_STATUS_SUCCESS;
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switch_channel_t *channel = switch_core_session_get_channel(session);
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const switch_codec_implementation_t *read_impl;
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switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s setup codec %s/%d/%d\n", switch_channel_get_name(channel), iananame, rate,
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interval);
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status = switch_core_codec_init(&tech_pvt->read_codec,
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iananame,
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NULL,
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NULL,
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rate, interval, 1, SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, NULL, switch_core_session_get_pool(session));
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if (status != SWITCH_STATUS_SUCCESS || !tech_pvt->read_codec.implementation || !switch_core_codec_ready(&tech_pvt->read_codec)) {
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goto end;
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}
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status = switch_core_codec_init(&tech_pvt->write_codec,
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iananame,
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NULL,
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NULL,
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rate, interval, 1, SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, NULL, switch_core_session_get_pool(session));
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if (status != SWITCH_STATUS_SUCCESS) {
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switch_core_codec_destroy(&tech_pvt->read_codec);
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goto end;
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}
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switch_core_session_set_read_codec(session, &tech_pvt->read_codec);
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switch_core_session_set_write_codec(session, &tech_pvt->write_codec);
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read_impl = tech_pvt->read_codec.implementation;
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switch_core_timer_init(&tech_pvt->timer, "soft",
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read_impl->microseconds_per_packet / 1000, read_impl->samples_per_packet * 4, switch_core_session_get_pool(session));
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switch_core_session_set_private(session, tech_pvt);
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tech_pvt->session = session;
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tech_pvt->channel = switch_core_session_get_channel(session);
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tech_pvt->null_buf = switch_core_session_alloc(session, sizeof(char) * read_impl->samples_per_packet * sizeof(int16_t));
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end:
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return status;
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}
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static switch_status_t null_channel_on_init(switch_core_session_t *session)
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{
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switch_channel_t *channel;
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null_private_t *tech_pvt = NULL;
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tech_pvt = switch_core_session_get_private(session);
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switch_assert(tech_pvt != NULL);
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channel = switch_core_session_get_channel(session);
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switch_assert(channel != NULL);
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switch_channel_set_flag(channel, CF_ACCEPT_CNG);
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switch_channel_set_flag(channel, CF_AUDIO);
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switch_channel_set_state(channel, CS_ROUTING);
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_status_t null_channel_on_destroy(switch_core_session_t *session)
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{
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switch_channel_t *channel = NULL;
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null_private_t *tech_pvt = NULL;
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channel = switch_core_session_get_channel(session);
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switch_assert(channel != NULL);
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tech_pvt = switch_core_session_get_private(session);
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if (tech_pvt) {
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switch_core_timer_destroy(&tech_pvt->timer);
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if (switch_core_codec_ready(&tech_pvt->read_codec)) {
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switch_core_codec_destroy(&tech_pvt->read_codec);
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}
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if (switch_core_codec_ready(&tech_pvt->write_codec)) {
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switch_core_codec_destroy(&tech_pvt->write_codec);
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}
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}
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_status_t null_channel_kill_channel(switch_core_session_t *session, int sig)
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{
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switch_channel_t *channel = NULL;
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null_private_t *tech_pvt = NULL;
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channel = switch_core_session_get_channel(session);
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switch_assert(channel != NULL);
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tech_pvt = switch_core_session_get_private(session);
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switch_assert(tech_pvt != NULL);
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switch (sig) {
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case SWITCH_SIG_BREAK:
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break;
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case SWITCH_SIG_KILL:
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switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "CHANNEL SWITCH_SIG_KILL - hanging up\n");
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switch_channel_hangup(channel, SWITCH_CAUSE_NORMAL_CLEARING);
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break;
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default:
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break;
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}
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_status_t null_channel_on_consume_media(switch_core_session_t *session)
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{
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switch_channel_t *channel = NULL;
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null_private_t *tech_pvt = NULL;
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channel = switch_core_session_get_channel(session);
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assert(channel != NULL);
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tech_pvt = switch_core_session_get_private(session);
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assert(tech_pvt != NULL);
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switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "CHANNEL CONSUME_MEDIA - answering\n");
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switch_channel_mark_answered(channel);
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_status_t null_channel_send_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf)
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{
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null_private_t *tech_pvt = NULL;
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tech_pvt = switch_core_session_get_private(session);
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switch_assert(tech_pvt != NULL);
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_status_t null_channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags, int stream_id)
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{
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switch_channel_t *channel = NULL;
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null_private_t *tech_pvt = NULL;
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switch_status_t status = SWITCH_STATUS_FALSE;
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channel = switch_core_session_get_channel(session);
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switch_assert(channel != NULL);
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tech_pvt = switch_core_session_get_private(session);
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switch_assert(tech_pvt != NULL);
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*frame = NULL;
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if (!switch_channel_ready(channel)) {
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return SWITCH_STATUS_FALSE;
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}
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switch_core_timer_next(&tech_pvt->timer);
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if (tech_pvt->null_buf) {
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int samples;
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memset(&tech_pvt->read_frame, 0, sizeof(switch_frame_t));
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samples = tech_pvt->read_codec.implementation->samples_per_packet;
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tech_pvt->read_frame.codec = &tech_pvt->read_codec;
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tech_pvt->read_frame.datalen = samples * sizeof(int16_t);
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tech_pvt->read_frame.samples = samples;
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tech_pvt->read_frame.data = tech_pvt->null_buf;
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switch_generate_sln_silence((int16_t *)tech_pvt->read_frame.data, tech_pvt->read_frame.samples, tech_pvt->read_codec.implementation->number_of_channels, 10000);
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*frame = &tech_pvt->read_frame;
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}
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if (*frame) {
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status = SWITCH_STATUS_SUCCESS;
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} else {
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status = SWITCH_STATUS_FALSE;
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}
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return status;
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}
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static switch_status_t null_channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, switch_io_flag_t flags, int stream_id)
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{
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switch_channel_t *channel = NULL;
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null_private_t *tech_pvt = NULL;
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channel = switch_core_session_get_channel(session);
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switch_assert(channel != NULL);
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tech_pvt = switch_core_session_get_private(session);
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switch_assert(tech_pvt != NULL);
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switch_core_timer_sync(&tech_pvt->timer);
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_status_t null_channel_receive_message(switch_core_session_t *session, switch_core_session_message_t *msg)
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{
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switch_channel_t *channel;
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null_private_t *tech_pvt;
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channel = switch_core_session_get_channel(session);
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switch_assert(channel != NULL);
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tech_pvt = switch_core_session_get_private(session);
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switch_assert(tech_pvt != NULL);
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switch (msg->message_id) {
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case SWITCH_MESSAGE_INDICATE_ANSWER:
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switch_channel_mark_answered(channel);
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break;
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case SWITCH_MESSAGE_INDICATE_BRIDGE:
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case SWITCH_MESSAGE_INDICATE_UNBRIDGE:
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case SWITCH_MESSAGE_INDICATE_AUDIO_SYNC:
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switch_core_timer_sync(&tech_pvt->timer);
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break;
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default:
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break;
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}
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return SWITCH_STATUS_SUCCESS;
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}
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static switch_call_cause_t null_channel_outgoing_channel(switch_core_session_t *session, switch_event_t *var_event,
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switch_caller_profile_t *outbound_profile,
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switch_core_session_t **new_session, switch_memory_pool_t **pool, switch_originate_flag_t flags,
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switch_call_cause_t *cancel_cause)
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{
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char name[128];
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switch_channel_t *ochannel = NULL;
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if (session) {
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ochannel = switch_core_session_get_channel(session);
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switch_channel_clear_flag(ochannel, CF_PROXY_MEDIA);
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switch_channel_clear_flag(ochannel, CF_PROXY_MODE);
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switch_channel_pre_answer(ochannel);
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}
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if ((*new_session = switch_core_session_request(null_endpoint_interface, SWITCH_CALL_DIRECTION_OUTBOUND, flags, pool)) != 0) {
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null_private_t *tech_pvt;
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switch_channel_t *channel;
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switch_caller_profile_t *caller_profile;
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switch_core_session_add_stream(*new_session, NULL);
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if ((tech_pvt = (null_private_t *) switch_core_session_alloc(*new_session, sizeof(null_private_t))) != 0) {
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channel = switch_core_session_get_channel(*new_session);
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switch_snprintf(name, sizeof(name), "null/%s", outbound_profile->destination_number);
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switch_channel_set_name(channel, name);
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if (null_tech_init(tech_pvt, *new_session) != SWITCH_STATUS_SUCCESS) {
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switch_core_session_destroy(new_session);
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return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
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}
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} else {
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switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(*new_session), SWITCH_LOG_CRIT, "Hey where is my memory pool?\n");
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switch_core_session_destroy(new_session);
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return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
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}
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if (outbound_profile) {
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caller_profile = switch_caller_profile_clone(*new_session, outbound_profile);
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caller_profile->source = switch_core_strdup(caller_profile->pool, modname);
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switch_snprintf(name, sizeof(name), "null/%s", caller_profile->destination_number);
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switch_channel_set_name(channel, name);
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switch_channel_set_caller_profile(channel, caller_profile);
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tech_pvt->caller_profile = caller_profile;
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} else {
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switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(*new_session), SWITCH_LOG_ERROR, "Doh! no caller profile\n");
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switch_core_session_destroy(new_session);
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return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
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}
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switch_channel_set_state(channel, CS_INIT);
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switch_channel_set_flag(channel, CF_AUDIO);
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return SWITCH_CAUSE_SUCCESS;
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}
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return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
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}
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static switch_state_handler_table_t null_channel_event_handlers = {
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/*.on_init */ null_channel_on_init,
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/*.on_routing */ NULL,
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/*.on_execute */ NULL,
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/*.on_hangup */ NULL,
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/*.on_exchange_media */ NULL,
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/*.on_soft_execute */ NULL,
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/*.on_consume_media */ null_channel_on_consume_media,
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/*.on_hibernate */ NULL,
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/*.on_reset */ NULL,
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/*.on_park */ NULL,
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/*.on_reporting */ NULL,
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/*.on_destroy */ null_channel_on_destroy
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};
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static switch_io_routines_t null_channel_io_routines = {
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/*.outgoing_channel */ null_channel_outgoing_channel,
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/*.read_frame */ null_channel_read_frame,
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/*.write_frame */ null_channel_write_frame,
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/*.kill_channel */ null_channel_kill_channel,
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/*.send_dtmf */ null_channel_send_dtmf,
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/*.receive_message */ null_channel_receive_message
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};
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SWITCH_MODULE_LOAD_FUNCTION(mod_loopback_load)
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{
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switch_application_interface_t *app_interface;
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@ -1226,6 +1573,11 @@ SWITCH_MODULE_LOAD_FUNCTION(mod_loopback_load)
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loopback_endpoint_interface->io_routines = &channel_io_routines;
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loopback_endpoint_interface->state_handler = &channel_event_handlers;
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null_endpoint_interface = switch_loadable_module_create_interface(*module_interface, SWITCH_ENDPOINT_INTERFACE);
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null_endpoint_interface->interface_name = "null";
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null_endpoint_interface->io_routines = &null_channel_io_routines;
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null_endpoint_interface->state_handler = &null_channel_event_handlers;
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SWITCH_ADD_APP(app_interface, "unloop", "Tell loopback to unfold", "Tell loopback to unfold", unloop_function, "", SAF_NO_LOOPBACK);
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/* indicate that the module should continue to be loaded */
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