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freeswitch/src/switch_core_io.c

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/*
* FreeSWITCH Moular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005-2014, Anthony Minessale II <anthm@freeswitch.org>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthm@freeswitch.org>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthm@freeswitch.org>
* Michael Jerris <mike@jerris.com>
* Paul D. Tinsley <pdt at jackhammer.org>
* Seven Du <dujinfang@gmail.com>
*
*
* switch_core_io.c -- Main Core Library (Media I/O)
*
*/
#include <switch.h>
#include "private/switch_core_pvt.h"
SWITCH_DECLARE(void) switch_core_gen_encoded_silence(unsigned char *data, const switch_codec_implementation_t *read_impl, switch_size_t len)
{
unsigned char g729_filler[] = {
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81,
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81,
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81,
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81,
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81,
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81,
114, 170, 250, 103, 54, 211, 203, 194, 94, 64,
229, 127, 79, 96, 207, 82, 216, 110, 245, 81
};
if (read_impl->ianacode == 18 || switch_stristr("g729", read_impl->iananame)) {
memcpy(data, g729_filler, len);
} else {
memset(data, 255, len);
}
}
SWITCH_DECLARE(switch_status_t) switch_core_session_read_frame(switch_core_session_t *session, switch_frame_t **frame, switch_io_flag_t flags,
int stream_id)
{
switch_io_event_hook_read_frame_t *ptr;
switch_status_t status = SWITCH_STATUS_FALSE;
int need_codec, perfect, do_bugs = 0, do_resample = 0, is_cng = 0, tap_only = 0;
switch_codec_implementation_t codec_impl;
unsigned int flag = 0;
int i;
switch_assert(session != NULL);
tap_only = switch_test_flag(session, SSF_MEDIA_BUG_TAP_ONLY);
switch_os_yield();
if (switch_mutex_trylock(session->codec_read_mutex) == SWITCH_STATUS_SUCCESS) {
switch_mutex_unlock(session->codec_read_mutex);
} else {
switch_cond_next();
*frame = &runtime.dummy_cng_frame;
return SWITCH_STATUS_SUCCESS;
}
if (!(session->read_codec && session->read_codec->implementation && switch_core_codec_ready(session->read_codec))) {
if (switch_channel_test_flag(session->channel, CF_PROXY_MODE) || switch_channel_get_state(session->channel) == CS_HIBERNATE) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "%s reading on a session with no media!\n",
switch_channel_get_name(session->channel));
switch_cond_next();
*frame = &runtime.dummy_cng_frame;
return SWITCH_STATUS_SUCCESS;
}
if (switch_channel_test_flag(session->channel, CF_AUDIO_PAUSE_READ)) {
switch_yield(20000);
*frame = &runtime.dummy_cng_frame;
// switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Media Paused!!!!\n");
return SWITCH_STATUS_SUCCESS;
}
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s has no read codec.\n", switch_channel_get_name(session->channel));
switch_channel_hangup(session->channel, SWITCH_CAUSE_INCOMPATIBLE_DESTINATION);
return SWITCH_STATUS_FALSE;
}
switch_mutex_lock(session->codec_read_mutex);
if (!switch_core_codec_ready(session->read_codec)) {
switch_mutex_unlock(session->codec_read_mutex);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s has no read codec.\n", switch_channel_get_name(session->channel));
switch_channel_hangup(session->channel, SWITCH_CAUSE_INCOMPATIBLE_DESTINATION);
*frame = &runtime.dummy_cng_frame;
return SWITCH_STATUS_FALSE;
}
switch_mutex_lock(session->read_codec->mutex);
top:
for(i = 0; i < 2; i++) {
if (session->dmachine[i]) {
switch_channel_dtmf_lock(session->channel);
switch_ivr_dmachine_ping(session->dmachine[i], NULL);
switch_channel_dtmf_unlock(session->channel);
}
}
if (switch_channel_down(session->channel) || !switch_core_codec_ready(session->read_codec)) {
*frame = NULL;
status = SWITCH_STATUS_FALSE;
goto even_more_done;
}
status = SWITCH_STATUS_FALSE;
need_codec = perfect = 0;
*frame = NULL;
if (session->read_codec && !session->track_id && session->track_duration) {
if (session->read_frame_count == 0) {
switch_event_t *event;
switch_core_session_message_t msg = { 0 };
session->read_frame_count = (session->read_impl.samples_per_second / session->read_impl.samples_per_packet) * session->track_duration;
msg.message_id = SWITCH_MESSAGE_HEARTBEAT_EVENT;
msg.numeric_arg = session->track_duration;
switch_core_session_receive_message(session, &msg);
switch_event_create(&event, SWITCH_EVENT_SESSION_HEARTBEAT);
switch_channel_event_set_data(session->channel, event);
switch_event_fire(&event);
} else {
session->read_frame_count--;
}
}
if (switch_channel_test_flag(session->channel, CF_HOLD)) {
switch_yield(session->read_impl.microseconds_per_packet);
status = SWITCH_STATUS_BREAK;
goto even_more_done;
}
if (session->endpoint_interface->io_routines->read_frame) {
switch_mutex_unlock(session->read_codec->mutex);
switch_mutex_unlock(session->codec_read_mutex);
if ((status = session->endpoint_interface->io_routines->read_frame(session, frame, flags, stream_id)) == SWITCH_STATUS_SUCCESS) {
for (ptr = session->event_hooks.read_frame; ptr; ptr = ptr->next) {
if ((status = ptr->read_frame(session, frame, flags, stream_id)) != SWITCH_STATUS_SUCCESS) {
break;
}
}
}
if (status == SWITCH_STATUS_INUSE) {
*frame = &runtime.dummy_cng_frame;
switch_yield(20000);
return SWITCH_STATUS_SUCCESS;
}
if (!SWITCH_READ_ACCEPTABLE(status) || !session->read_codec || !switch_core_codec_ready(session->read_codec)) {
*frame = NULL;
return SWITCH_STATUS_FALSE;
}
switch_mutex_lock(session->codec_read_mutex);
if (!switch_core_codec_ready(session->read_codec)) {
switch_mutex_unlock(session->codec_read_mutex);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s has no read codec.\n", switch_channel_get_name(session->channel));
switch_channel_hangup(session->channel, SWITCH_CAUSE_INCOMPATIBLE_DESTINATION);
*frame = &runtime.dummy_cng_frame;
return SWITCH_STATUS_FALSE;
}
switch_mutex_lock(session->read_codec->mutex);
if (!switch_core_codec_ready(session->read_codec)) {
*frame = NULL;
status = SWITCH_STATUS_FALSE;
goto even_more_done;
}
}
if (status != SWITCH_STATUS_SUCCESS) {
goto done;
}
if (!(*frame)) {
goto done;
}
switch_assert(*frame != NULL);
if (switch_test_flag(*frame, SFF_PROXY_PACKET)) {
/* Fast PASS! */
status = SWITCH_STATUS_SUCCESS;
goto done;
}
switch_assert((*frame)->codec != NULL);
if (!(session->read_codec && (*frame)->codec && (*frame)->codec->implementation) && switch_core_codec_ready((*frame)->codec)) {
status = SWITCH_STATUS_FALSE;
goto done;
}
if (session->bugs && !((*frame)->flags & SFF_CNG) && !((*frame)->flags & SFF_NOT_AUDIO)) {
switch_media_bug_t *bp;
switch_bool_t ok = SWITCH_TRUE;
int prune = 0;
switch_thread_rwlock_rdlock(session->bug_rwlock);
for (bp = session->bugs; bp; bp = bp->next) {
ok = SWITCH_TRUE;
if (switch_channel_test_flag(session->channel, CF_PAUSE_BUGS) && !switch_core_media_bug_test_flag(bp, SMBF_NO_PAUSE)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_ANSWERED) && switch_core_media_bug_test_flag(bp, SMBF_ANSWER_REQ)) {
continue;
}
if (switch_test_flag(bp, SMBF_PRUNE)) {
prune++;
continue;
}
if (bp->ready) {
if (switch_test_flag(bp, SMBF_TAP_NATIVE_READ)) {
if ((*frame)->codec && (*frame)->codec->implementation &&
(*frame)->codec->implementation->encoded_bytes_per_packet &&
(*frame)->datalen != (*frame)->codec->implementation->encoded_bytes_per_packet) {
switch_set_flag((*frame), SFF_CNG);
break;
}
if (bp->callback) {
bp->native_read_frame = *frame;
ok = bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_TAP_NATIVE_READ);
bp->native_read_frame = NULL;
}
}
}
if ((bp->stop_time && bp->stop_time <= switch_epoch_time_now(NULL)) || ok == SWITCH_FALSE) {
switch_set_flag(bp, SMBF_PRUNE);
prune++;
}
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (prune) {
switch_core_media_bug_prune(session);
}
}
codec_impl = *(*frame)->codec->implementation;
if (session->read_codec->implementation->impl_id != codec_impl.impl_id) {
need_codec = TRUE;
tap_only = 0;
}
if (codec_impl.actual_samples_per_second != session->read_impl.actual_samples_per_second) {
do_resample = 1;
}
if (tap_only) {
switch_media_bug_t *bp;
switch_bool_t ok = SWITCH_TRUE;
int prune = 0;
if (session->bugs && switch_test_flag((*frame), SFF_CNG)) {
switch_thread_rwlock_rdlock(session->bug_rwlock);
for (bp = session->bugs; bp; bp = bp->next) {
ok = SWITCH_TRUE;
if (switch_channel_test_flag(session->channel, CF_PAUSE_BUGS) && !switch_core_media_bug_test_flag(bp, SMBF_NO_PAUSE)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_ANSWERED) && switch_core_media_bug_test_flag(bp, SMBF_ANSWER_REQ)) {
continue;
}
if (switch_test_flag(bp, SMBF_PRUNE)) {
prune++;
continue;
}
if (bp->ready && (*frame)->codec && (*frame)->codec->implementation && (*frame)->codec->implementation->encoded_bytes_per_packet) {
if (switch_test_flag(bp, SMBF_TAP_NATIVE_READ)) {
if (bp->callback) {
switch_frame_t tmp_frame = {0};
unsigned char data[SWITCH_RECOMMENDED_BUFFER_SIZE] = {0};
tmp_frame.codec = (*frame)->codec;
tmp_frame.datalen = (*frame)->codec->implementation->encoded_bytes_per_packet;
tmp_frame.samples = (*frame)->codec->implementation->samples_per_packet;
tmp_frame.channels = (*frame)->codec->implementation->number_of_channels;
tmp_frame.data = data;
switch_core_gen_encoded_silence(data, (*frame)->codec->implementation, tmp_frame.datalen);
bp->native_read_frame = &tmp_frame;
ok = bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_TAP_NATIVE_READ);
bp->native_read_frame = NULL;
}
}
}
if ((bp->stop_time && bp->stop_time <= switch_epoch_time_now(NULL)) || ok == SWITCH_FALSE) {
switch_set_flag(bp, SMBF_PRUNE);
prune++;
}
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (prune) {
switch_core_media_bug_prune(session);
}
}
goto done;
} else if (session->bugs && !need_codec) {
do_bugs = 1;
need_codec = 1;
}
if (switch_test_flag(*frame, SFF_CNG)) {
if (!session->bugs && !session->plc) {
/* Check if other session has bugs */
unsigned int other_session_bugs = 0;
switch_core_session_t *other_session = NULL;
if (switch_channel_test_flag(switch_core_session_get_channel(session), CF_BRIDGED) &&
switch_core_session_get_partner(session, &other_session) == SWITCH_STATUS_SUCCESS) {
if (other_session->bugs && !switch_test_flag(other_session, SSF_MEDIA_BUG_TAP_ONLY)) {
other_session_bugs = 1;
}
switch_core_session_rwunlock(other_session);
}
/* Don't process CNG frame */
if (!other_session_bugs) {
status = SWITCH_STATUS_SUCCESS;
goto done;
}
}
is_cng = 1;
need_codec = 1;
} else if (switch_test_flag(*frame, SFF_NOT_AUDIO)) {
do_resample = 0;
do_bugs = 0;
need_codec = 0;
}
if (switch_test_flag(session, SSF_READ_TRANSCODE) && !need_codec && switch_core_codec_ready(session->read_codec)) {
switch_core_session_t *other_session;
const char *uuid = switch_channel_get_partner_uuid(switch_core_session_get_channel(session));
switch_clear_flag(session, SSF_READ_TRANSCODE);
if (uuid && (other_session = switch_core_session_locate(uuid))) {
switch_set_flag(other_session, SSF_READ_CODEC_RESET);
switch_set_flag(other_session, SSF_READ_CODEC_RESET);
switch_set_flag(other_session, SSF_WRITE_CODEC_RESET);
switch_core_session_rwunlock(other_session);
}
}
if (switch_test_flag(session, SSF_READ_CODEC_RESET)) {
switch_core_codec_reset(session->read_codec);
switch_clear_flag(session, SSF_READ_CODEC_RESET);
}
if (status == SWITCH_STATUS_SUCCESS && need_codec) {
switch_frame_t *enc_frame, *read_frame = *frame;
switch_set_flag(session, SSF_READ_TRANSCODE);
if (!switch_test_flag(session, SSF_WARN_TRANSCODE)) {
switch_core_session_message_t msg = { 0 };
msg.message_id = SWITCH_MESSAGE_INDICATE_TRANSCODING_NECESSARY;
switch_core_session_receive_message(session, &msg);
switch_set_flag(session, SSF_WARN_TRANSCODE);
}
if (read_frame->codec || (is_cng && session->plc)) {
session->raw_read_frame.datalen = session->raw_read_frame.buflen;
if (is_cng) {
if (session->plc) {
plc_fillin(session->plc, session->raw_read_frame.data, read_frame->codec->implementation->decoded_bytes_per_packet / 2);
is_cng = 0;
flag &= ~SFF_CNG;
} else {
memset(session->raw_read_frame.data, 255, read_frame->codec->implementation->decoded_bytes_per_packet);
}
session->raw_read_frame.timestamp = 0;
session->raw_read_frame.datalen = read_frame->codec->implementation->decoded_bytes_per_packet;
session->raw_read_frame.samples = session->raw_read_frame.datalen / sizeof(int16_t) / session->read_impl.number_of_channels;
session->raw_read_frame.channels = read_frame->codec->implementation->number_of_channels;
read_frame = &session->raw_read_frame;
status = SWITCH_STATUS_SUCCESS;
} else {
switch_codec_t *use_codec = read_frame->codec;
if (do_bugs) {
switch_thread_rwlock_wrlock(session->bug_rwlock);
if (!session->bugs) {
switch_thread_rwlock_unlock(session->bug_rwlock);
goto done;
}
if (!switch_core_codec_ready(&session->bug_codec) && switch_core_codec_ready(read_frame->codec)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Setting BUG Codec %s:%d\n",
read_frame->codec->implementation->iananame, read_frame->codec->implementation->ianacode);
switch_core_codec_copy(read_frame->codec, &session->bug_codec, NULL, NULL);
if (!switch_core_codec_ready(&session->bug_codec)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "%s Error setting BUG codec %s!\n",
switch_core_session_get_name(session), read_frame->codec->implementation->iananame);
}
}
if (switch_core_codec_ready(&session->bug_codec)) {
use_codec = &session->bug_codec;
}
switch_thread_rwlock_unlock(session->bug_rwlock);
switch_thread_rwlock_wrlock(session->bug_rwlock);
if (!session->bugs) {
do_bugs = 0;
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (!do_bugs) goto done;
}
if (!switch_test_flag(read_frame->codec, SWITCH_CODEC_FLAG_HAS_PLC) &&
(switch_channel_test_flag(session->channel, CF_JITTERBUFFER_PLC) ||
switch_channel_test_flag(session->channel, CF_CNG_PLC)) && !session->plc) {
session->plc = plc_init(NULL);
}
if (!switch_test_flag(read_frame->codec, SWITCH_CODEC_FLAG_HAS_PLC) && session->plc && switch_test_flag(read_frame, SFF_PLC)) {
session->raw_read_frame.datalen = read_frame->codec->implementation->decoded_bytes_per_packet;
session->raw_read_frame.samples = session->raw_read_frame.datalen / sizeof(int16_t) / session->read_impl.number_of_channels;
session->raw_read_frame.channels = session->read_impl.number_of_channels;
memset(session->raw_read_frame.data, 255, session->raw_read_frame.datalen);
status = SWITCH_STATUS_SUCCESS;
} else {
switch_codec_t *codec = use_codec;
switch_thread_rwlock_rdlock(session->bug_rwlock);
if (!switch_core_codec_ready(codec)) {
codec = read_frame->codec;
}
if (!switch_core_codec_ready(codec)) {
switch_thread_rwlock_unlock(session->bug_rwlock);
goto done;
}
codec->cur_frame = read_frame;
session->read_codec->cur_frame = read_frame;
status = switch_core_codec_decode(codec,
session->read_codec,
read_frame->data,
read_frame->datalen,
session->read_impl.actual_samples_per_second,
session->raw_read_frame.data, &session->raw_read_frame.datalen, &session->raw_read_frame.rate,
&read_frame->flags);
if (status == SWITCH_STATUS_NOT_INITALIZED) {
switch_thread_rwlock_unlock(session->bug_rwlock);
goto done;
}
session->raw_read_frame.samples = session->raw_read_frame.datalen / 2;
session->raw_read_frame.channels = codec->implementation->number_of_channels;
codec->cur_frame = NULL;
session->read_codec->cur_frame = NULL;
switch_thread_rwlock_unlock(session->bug_rwlock);
}
if (status == SWITCH_STATUS_SUCCESS && session->read_impl.number_of_channels == 1) {
if (session->plc) {
if (switch_test_flag(read_frame, SFF_PLC)) {
plc_fillin(session->plc, session->raw_read_frame.data, session->raw_read_frame.datalen / 2);
switch_clear_flag(read_frame, SFF_PLC);
} else {
plc_rx(session->plc, session->raw_read_frame.data, session->raw_read_frame.datalen / 2);
}
}
}
}
if (do_resample && ((status == SWITCH_STATUS_SUCCESS) || is_cng)) {
status = SWITCH_STATUS_RESAMPLE;
}
/* mux or demux to match */
if (session->raw_read_frame.channels != session->read_impl.number_of_channels) {
uint32_t rlen = session->raw_read_frame.datalen / 2 / session->raw_read_frame.channels;
switch_mux_channels((int16_t *) session->raw_read_frame.data, rlen, session->raw_read_frame.channels, session->read_impl.number_of_channels);
session->raw_read_frame.datalen = rlen * 2 * session->read_impl.number_of_channels;
session->raw_read_frame.samples = session->raw_read_frame.datalen / 2;
session->raw_read_frame.channels = session->read_impl.number_of_channels;
}
switch (status) {
case SWITCH_STATUS_RESAMPLE:
if (!session->read_resampler) {
switch_mutex_lock(session->resample_mutex);
status = switch_resample_create(&session->read_resampler,
read_frame->codec->implementation->actual_samples_per_second,
session->read_impl.actual_samples_per_second,
session->read_impl.decoded_bytes_per_packet, SWITCH_RESAMPLE_QUALITY,
session->read_impl.number_of_channels);
switch_mutex_unlock(session->resample_mutex);
if (status != SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Unable to allocate resampler\n");
status = SWITCH_STATUS_FALSE;
goto done;
} else {
switch_core_session_message_t msg = { 0 };
msg.numeric_arg = 1;
msg.message_id = SWITCH_MESSAGE_RESAMPLE_EVENT;
switch_core_session_receive_message(session, &msg);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_NOTICE, "Activating read resampler\n");
}
}
case SWITCH_STATUS_SUCCESS:
session->raw_read_frame.samples = session->raw_read_frame.datalen / sizeof(int16_t) / session->read_impl.number_of_channels;
session->raw_read_frame.channels = session->read_impl.number_of_channels;
session->raw_read_frame.rate = read_frame->rate;
if (read_frame->codec->implementation->samples_per_packet != session->read_impl.samples_per_packet) {
session->raw_read_frame.timestamp = 0;
} else {
session->raw_read_frame.timestamp = read_frame->timestamp;
}
session->raw_read_frame.ssrc = read_frame->ssrc;
session->raw_read_frame.seq = read_frame->seq;
session->raw_read_frame.m = read_frame->m;
session->raw_read_frame.payload = read_frame->payload;
session->raw_read_frame.flags = 0;
if (switch_test_flag(read_frame, SFF_PLC)) {
session->raw_read_frame.flags |= SFF_PLC;
}
read_frame = &session->raw_read_frame;
break;
case SWITCH_STATUS_NOOP:
if (session->read_resampler) {
switch_mutex_lock(session->resample_mutex);
switch_resample_destroy(&session->read_resampler);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_NOTICE, "Deactivating read resampler\n");
switch_mutex_unlock(session->resample_mutex);
{
switch_core_session_message_t msg = { 0 };
msg.numeric_arg = 0;
msg.message_id = SWITCH_MESSAGE_RESAMPLE_EVENT;
switch_core_session_receive_message(session, &msg);
}
}
status = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_BREAK:
memset(session->raw_read_frame.data, 255, read_frame->codec->implementation->decoded_bytes_per_packet);
session->raw_read_frame.datalen = read_frame->codec->implementation->decoded_bytes_per_packet;
session->raw_read_frame.samples = session->raw_read_frame.datalen / sizeof(int16_t) / session->read_impl.number_of_channels;
session->raw_read_frame.channels = session->read_impl.number_of_channels;
session->raw_read_frame.timestamp = read_frame->timestamp;
session->raw_read_frame.rate = read_frame->rate;
session->raw_read_frame.ssrc = read_frame->ssrc;
session->raw_read_frame.seq = read_frame->seq;
session->raw_read_frame.m = read_frame->m;
session->raw_read_frame.payload = read_frame->payload;
session->raw_read_frame.flags = 0;
if (switch_test_flag(read_frame, SFF_PLC)) {
session->raw_read_frame.flags |= SFF_PLC;
}
read_frame = &session->raw_read_frame;
status = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_NOT_INITALIZED:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec init error!\n");
goto done;
default:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec %s decoder error! [%d]\n",
session->read_codec->codec_interface->interface_name, status);
if (++session->decoder_errors < 10) {
status = SWITCH_STATUS_SUCCESS;
} else {
goto done;
}
}
session->decoder_errors = 0;
}
if (session->bugs) {
switch_media_bug_t *bp;
switch_bool_t ok = SWITCH_TRUE;
int prune = 0;
switch_thread_rwlock_rdlock(session->bug_rwlock);
for (bp = session->bugs; bp; bp = bp->next) {
ok = SWITCH_TRUE;
if (switch_channel_test_flag(session->channel, CF_PAUSE_BUGS) && !switch_core_media_bug_test_flag(bp, SMBF_NO_PAUSE)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_ANSWERED) && switch_core_media_bug_test_flag(bp, SMBF_ANSWER_REQ)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_BRIDGED) && switch_core_media_bug_test_flag(bp, SMBF_BRIDGE_REQ)) {
continue;
}
if (switch_test_flag(bp, SMBF_PRUNE)) {
prune++;
continue;
}
if (ok && switch_test_flag(bp, SMBF_READ_REPLACE)) {
do_bugs = 0;
if (bp->callback) {
bp->read_replace_frame_in = read_frame;
bp->read_replace_frame_out = read_frame;
bp->read_demux_frame = NULL;
if ((ok = bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_READ_REPLACE)) == SWITCH_TRUE) {
read_frame = bp->read_replace_frame_out;
}
}
}
if ((bp->stop_time && bp->stop_time <= switch_epoch_time_now(NULL)) || ok == SWITCH_FALSE) {
switch_set_flag(bp, SMBF_PRUNE);
prune++;
}
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (prune) {
switch_core_media_bug_prune(session);
}
}
if (session->bugs) {
switch_media_bug_t *bp;
switch_bool_t ok = SWITCH_TRUE;
int prune = 0;
switch_thread_rwlock_rdlock(session->bug_rwlock);
for (bp = session->bugs; bp; bp = bp->next) {
ok = SWITCH_TRUE;
if (switch_channel_test_flag(session->channel, CF_PAUSE_BUGS) && !switch_core_media_bug_test_flag(bp, SMBF_NO_PAUSE)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_ANSWERED) && switch_core_media_bug_test_flag(bp, SMBF_ANSWER_REQ)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_BRIDGED) && switch_core_media_bug_test_flag(bp, SMBF_BRIDGE_REQ)) {
continue;
}
if (switch_test_flag(bp, SMBF_PRUNE)) {
prune++;
continue;
}
if (ok && bp->ready && switch_test_flag(bp, SMBF_READ_STREAM)) {
switch_mutex_lock(bp->read_mutex);
if (bp->read_demux_frame) {
uint8_t data[SWITCH_RECOMMENDED_BUFFER_SIZE];
int bytes = read_frame->datalen;
uint32_t datalen = 0;
uint32_t samples = bytes / 2 / bp->read_demux_frame->channels;
memcpy(data, read_frame->data, read_frame->datalen);
datalen = switch_unmerge_sln((int16_t *)data, samples,
bp->read_demux_frame->data, samples,
bp->read_demux_frame->channels) * 2 * bp->read_demux_frame->channels;
switch_buffer_write(bp->raw_read_buffer, data, datalen);
} else {
switch_buffer_write(bp->raw_read_buffer, read_frame->data, read_frame->datalen);
}
if (bp->callback) {
ok = bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_READ);
}
switch_mutex_unlock(bp->read_mutex);
}
if ((bp->stop_time && bp->stop_time <= switch_epoch_time_now(NULL)) || ok == SWITCH_FALSE) {
switch_set_flag(bp, SMBF_PRUNE);
prune++;
}
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (prune) {
switch_core_media_bug_prune(session);
}
}
if (do_bugs || tap_only) {
goto done;
}
if (session->read_codec) {
if (session->read_resampler) {
short *data = read_frame->data;
switch_mutex_lock(session->resample_mutex);
switch_resample_process(session->read_resampler, data, (int) read_frame->datalen / 2 / session->read_resampler->channels);
memcpy(data, session->read_resampler->to, session->read_resampler->to_len * 2 * session->read_resampler->channels);
read_frame->samples = session->read_resampler->to_len;
read_frame->channels = session->read_resampler->channels;
read_frame->datalen = session->read_resampler->to_len * 2 * session->read_resampler->channels;
read_frame->rate = session->read_resampler->to_rate;
switch_mutex_unlock(session->resample_mutex);
}
if (read_frame->datalen == session->read_impl.decoded_bytes_per_packet) {
perfect = TRUE;
} else {
if (!session->raw_read_buffer) {
switch_size_t bytes = session->read_impl.decoded_bytes_per_packet;
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Engaging Read Buffer at %u bytes vs %u\n",
(uint32_t) bytes, (uint32_t) (*frame)->datalen);
switch_buffer_create_dynamic(&session->raw_read_buffer, bytes * SWITCH_BUFFER_BLOCK_FRAMES, bytes * SWITCH_BUFFER_START_FRAMES, 0);
}
if (read_frame->datalen && (!switch_buffer_write(session->raw_read_buffer, read_frame->data, read_frame->datalen))) {
status = SWITCH_STATUS_MEMERR;
goto done;
}
}
if (perfect || switch_buffer_inuse(session->raw_read_buffer) >= session->read_impl.decoded_bytes_per_packet) {
if (perfect) {
enc_frame = read_frame;
session->raw_read_frame.rate = read_frame->rate;
} else {
session->raw_read_frame.datalen = (uint32_t) switch_buffer_read(session->raw_read_buffer,
session->raw_read_frame.data,
session->read_impl.decoded_bytes_per_packet);
session->raw_read_frame.rate = session->read_impl.actual_samples_per_second;
enc_frame = &session->raw_read_frame;
}
session->enc_read_frame.datalen = session->enc_read_frame.buflen;
switch_assert(session->read_codec != NULL);
switch_assert(enc_frame != NULL);
switch_assert(enc_frame->data != NULL);
session->read_codec->cur_frame = enc_frame;
enc_frame->codec->cur_frame = enc_frame;
switch_assert(enc_frame->datalen <= SWITCH_RECOMMENDED_BUFFER_SIZE);
switch_assert(session->enc_read_frame.datalen <= SWITCH_RECOMMENDED_BUFFER_SIZE);
status = switch_core_codec_encode(session->read_codec,
enc_frame->codec,
enc_frame->data,
enc_frame->datalen,
session->read_impl.actual_samples_per_second,
session->enc_read_frame.data, &session->enc_read_frame.datalen, &session->enc_read_frame.rate, &flag);
switch_assert(session->enc_read_frame.datalen <= SWITCH_RECOMMENDED_BUFFER_SIZE);
session->read_codec->cur_frame = NULL;
enc_frame->codec->cur_frame = NULL;
switch (status) {
case SWITCH_STATUS_RESAMPLE:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "Fixme 1\n");
case SWITCH_STATUS_SUCCESS:
session->enc_read_frame.samples = session->read_impl.decoded_bytes_per_packet / sizeof(int16_t) / session->read_impl.number_of_channels;
session->enc_read_frame.channels = session->read_impl.number_of_channels;
if (perfect) {
if (enc_frame->codec->implementation->samples_per_packet != session->read_impl.samples_per_packet) {
session->enc_read_frame.timestamp = 0;
} else {
session->enc_read_frame.timestamp = read_frame->timestamp;
}
session->enc_read_frame.rate = read_frame->rate;
session->enc_read_frame.ssrc = read_frame->ssrc;
session->enc_read_frame.seq = read_frame->seq;
session->enc_read_frame.m = read_frame->m;
session->enc_read_frame.payload = session->read_impl.ianacode;
}
*frame = &session->enc_read_frame;
break;
case SWITCH_STATUS_NOOP:
session->raw_read_frame.samples = enc_frame->codec->implementation->samples_per_packet;
session->raw_read_frame.channels = enc_frame->codec->implementation->number_of_channels;
session->raw_read_frame.timestamp = read_frame->timestamp;
session->raw_read_frame.payload = enc_frame->codec->implementation->ianacode;
session->raw_read_frame.m = read_frame->m;
session->raw_read_frame.ssrc = read_frame->ssrc;
session->raw_read_frame.seq = read_frame->seq;
*frame = enc_frame;
status = SWITCH_STATUS_SUCCESS;
break;
case SWITCH_STATUS_NOT_INITALIZED:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec init error!\n");
*frame = NULL;
status = SWITCH_STATUS_GENERR;
break;
default:
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Codec %s encoder error!\n",
session->read_codec->codec_interface->interface_name);
*frame = NULL;
status = SWITCH_STATUS_GENERR;
break;
}
} else {
goto top;
}
}
}
done:
if (!(*frame)) {
status = SWITCH_STATUS_FALSE;
} else {
if (flag & SFF_CNG) {
switch_set_flag((*frame), SFF_CNG);
}
if (session->bugs) {
switch_media_bug_t *bp;
switch_bool_t ok = SWITCH_TRUE;
int prune = 0;
switch_thread_rwlock_rdlock(session->bug_rwlock);
for (bp = session->bugs; bp; bp = bp->next) {
ok = SWITCH_TRUE;
if (switch_channel_test_flag(session->channel, CF_PAUSE_BUGS) && !switch_core_media_bug_test_flag(bp, SMBF_NO_PAUSE)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_ANSWERED) && switch_core_media_bug_test_flag(bp, SMBF_ANSWER_REQ)) {
continue;
}
if (!switch_channel_test_flag(session->channel, CF_BRIDGED) && switch_core_media_bug_test_flag(bp, SMBF_BRIDGE_REQ)) {
continue;
}
if (switch_test_flag(bp, SMBF_PRUNE)) {
prune++;
continue;
}
if (bp->ready && switch_test_flag(bp, SMBF_READ_PING)) {
switch_mutex_lock(bp->read_mutex);
bp->ping_frame = *frame;
if (bp->callback) {
if (bp->callback(bp, bp->user_data, SWITCH_ABC_TYPE_READ_PING) == SWITCH_FALSE
|| (bp->stop_time && bp->stop_time <= switch_epoch_time_now(NULL))) {
ok = SWITCH_FALSE;
}
}
bp->ping_frame = NULL;;
switch_mutex_unlock(bp->read_mutex);
}
if (ok == SWITCH_FALSE) {
switch_set_flag(bp, SMBF_PRUNE);
prune++;
}
}
switch_thread_rwlock_unlock(session->bug_rwlock);
if (prune) {
switch_core_media_bug_prune(session);
}
}
}
even_more_done:
if (!*frame ||
(!switch_test_flag(*frame, SFF_PROXY_PACKET) &&
(!(*frame)->codec || !(*frame)->codec->implementation || !switch_core_codec_ready((*frame)->codec)))) {
*frame = &runtime.dummy_cng_frame;
}
switch_mutex_unlock(session->read_codec->mutex);
switch_mutex_unlock(session->codec_read_mutex);
if (status == SWITCH_STATUS_SUCCESS && switch_channel_get_callstate(session->channel) == CCS_UNHELD) {
switch_channel_set_callstate(session->channel, CCS_ACTIVE);
}
return status;
}
static char *SIG_NAMES[] = {
"NONE",
"KILL",
"XFER",
"BREAK",
NULL
};
SWITCH_DECLARE(switch_status_t) switch_core_session_perform_kill_channel(switch_core_session_t *session,
const char *file, const char *func, int line, switch_signal_t sig)
{
switch_io_event_hook_kill_channel_t *ptr;
switch_status_t status = SWITCH_STATUS_FALSE;
switch_log_printf(SWITCH_CHANNEL_ID_LOG, file, func, line, switch_core_session_get_uuid(session), SWITCH_LOG_DEBUG10, "Send signal %s [%s]\n",
switch_channel_get_name(session->channel), SIG_NAMES[sig]);
if (session->endpoint_interface->io_routines->kill_channel) {
if ((status = session->endpoint_interface->io_routines->kill_channel(session, sig)) == SWITCH_STATUS_SUCCESS) {
for (ptr = session->event_hooks.kill_channel; ptr; ptr = ptr->next) {
if ((status = ptr->kill_channel(session, sig)) != SWITCH_STATUS_SUCCESS) {
break;
}
}
}
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_recv_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf)
{
switch_io_event_hook_recv_dtmf_t *ptr;
switch_status_t status;
switch_dtmf_t new_dtmf;
int fed = 0;
if (switch_channel_down(session->channel)) {
return SWITCH_STATUS_FALSE;
}
if (switch_test_flag(dtmf, DTMF_FLAG_SENSITIVE)) {
return SWITCH_STATUS_SUCCESS;
}
switch_assert(dtmf);
new_dtmf = *dtmf;
if (new_dtmf.duration > switch_core_max_dtmf_duration(0)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG1, "%s EXCESSIVE DTMF DIGIT [%c] LEN [%d]\n",
switch_channel_get_name(session->channel), new_dtmf.digit, new_dtmf.duration);
new_dtmf.duration = switch_core_max_dtmf_duration(0);
} else if (new_dtmf.duration < switch_core_min_dtmf_duration(0)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG1, "%s SHORT DTMF DIGIT [%c] LEN [%d]\n",
switch_channel_get_name(session->channel), new_dtmf.digit, new_dtmf.duration);
new_dtmf.duration = switch_core_min_dtmf_duration(0);
} else if (!new_dtmf.duration) {
new_dtmf.duration = switch_core_default_dtmf_duration(0);
}
if (!switch_test_flag(dtmf, DTMF_FLAG_SKIP_PROCESS)) {
if (session->dmachine[0]) {
char str[2] = { dtmf->digit, '\0' };
switch_ivr_dmachine_feed(session->dmachine[0], str, NULL);
fed = 1;
}
for (ptr = session->event_hooks.recv_dtmf; ptr; ptr = ptr->next) {
if ((status = ptr->recv_dtmf(session, &new_dtmf, SWITCH_DTMF_RECV)) != SWITCH_STATUS_SUCCESS) {
return status;
}
}
}
return fed ? SWITCH_STATUS_FALSE : SWITCH_STATUS_SUCCESS;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_send_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf)
{
switch_io_event_hook_send_dtmf_t *ptr;
switch_status_t status = SWITCH_STATUS_FALSE;
switch_dtmf_t new_dtmf;
if (switch_channel_down(session->channel)) {
return SWITCH_STATUS_FALSE;
}
if (switch_test_flag(dtmf, DTMF_FLAG_SENSITIVE)) {
return SWITCH_STATUS_SUCCESS;
}
if (switch_channel_test_flag(session->channel, CF_DROP_DTMF)) {
const char *file = switch_channel_get_variable_dup(session->channel, "drop_dtmf_masking_file", SWITCH_FALSE, -1);
const char *digits;
if (!zstr(file)) {
switch_ivr_broadcast(switch_core_session_get_uuid(session), file, SMF_ECHO_ALEG);
}
if ((digits = switch_channel_get_variable_dup(session->channel, "drop_dtmf_masking_digits", SWITCH_FALSE, -1)) && !zstr(digits)) {
const char *p;
switch_dtmf_t x_dtmf = { 0, switch_core_default_dtmf_duration(0), DTMF_FLAG_SKIP_PROCESS, 0};
switch_channel_clear_flag(session->channel, CF_DROP_DTMF);
for(p = digits; p && *p; p++) {
if (is_dtmf(*p)) {
x_dtmf.digit = *p;
switch_core_session_send_dtmf(session, &x_dtmf);
}
}
switch_channel_set_flag(session->channel, CF_DROP_DTMF);
}
return SWITCH_STATUS_SUCCESS;
}
switch_assert(dtmf);
new_dtmf = *dtmf;
if (new_dtmf.digit != 'w' && new_dtmf.digit != 'W') {
if (new_dtmf.duration > switch_core_max_dtmf_duration(0)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "%s EXCESSIVE DTMF DIGIT [%c] LEN [%d]\n",
switch_channel_get_name(session->channel), new_dtmf.digit, new_dtmf.duration);
new_dtmf.duration = switch_core_max_dtmf_duration(0);
} else if (new_dtmf.duration < switch_core_min_dtmf_duration(0)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "%s SHORT DTMF DIGIT [%c] LEN [%d]\n",
switch_channel_get_name(session->channel), new_dtmf.digit, new_dtmf.duration);
new_dtmf.duration = switch_core_min_dtmf_duration(0);
}
}
if (!new_dtmf.duration) {
new_dtmf.duration = switch_core_default_dtmf_duration(0);
}
if (!switch_test_flag(dtmf, DTMF_FLAG_SKIP_PROCESS)) {
for (ptr = session->event_hooks.send_dtmf; ptr; ptr = ptr->next) {
if ((status = ptr->send_dtmf(session, dtmf, SWITCH_DTMF_SEND)) != SWITCH_STATUS_SUCCESS) {
return SWITCH_STATUS_SUCCESS;
}
}
if (session->dmachine[1]) {
char str[2] = { new_dtmf.digit, '\0' };
switch_ivr_dmachine_feed(session->dmachine[1], str, NULL);
return SWITCH_STATUS_SUCCESS;
}
}
if (session->endpoint_interface->io_routines->send_dtmf) {
int send = 0;
status = SWITCH_STATUS_SUCCESS;
if (switch_channel_test_cap(session->channel, CC_QUEUEABLE_DTMF_DELAY) && (dtmf->digit == 'w' || dtmf->digit == 'W')) {
send = 1;
} else {
if (dtmf->digit == 'w') {
switch_yield(500000);
} else if (dtmf->digit == 'W') {
switch_yield(1000000);
} else {
send = 1;
}
}
if (send) {
status = session->endpoint_interface->io_routines->send_dtmf(session, &new_dtmf);
}
}
return status;
}
SWITCH_DECLARE(switch_status_t) switch_core_session_send_dtmf_string(switch_core_session_t *session, const char *dtmf_string)
{
char *p;
switch_dtmf_t dtmf = { 0, switch_core_default_dtmf_duration(0), DTMF_FLAG_SKIP_PROCESS, 0};
int sent = 0, dur;
char *string;
int i, argc;
char *argv[256];
int dur_total = 0;
switch_assert(session != NULL);
if (zstr(dtmf_string)) {
return SWITCH_STATUS_FALSE;
}
if (*dtmf_string == '~') {
dtmf_string++;
dtmf.flags = 0;
}
if (switch_channel_down(session->channel)) {
return SWITCH_STATUS_FALSE;
}
if (strlen(dtmf_string) > 99) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "Attempt to send very large dtmf string ignored!\n");
return SWITCH_STATUS_FALSE;
}
string = switch_core_session_strdup(session, dtmf_string);
argc = switch_separate_string(string, '+', argv, (sizeof(argv) / sizeof(argv[0])));
if (argc) {
switch_channel_pre_answer(session->channel);
}
for (i = 0; i < argc; i++) {
dtmf.duration = switch_core_default_dtmf_duration(0);
dur = switch_core_default_dtmf_duration(0) / 8;
if ((p = strchr(argv[i], '@'))) {
*p++ = '\0';
if ((dur = atoi(p)) > (int)switch_core_min_dtmf_duration(0) / 8) {
dtmf.duration = dur * 8;
}
}
for (p = argv[i]; p && *p; p++) {
if (is_dtmf(*p)) {
dtmf.digit = *p;
if (dtmf.digit != 'w' && dtmf.digit != 'W') {
if (dtmf.duration > switch_core_max_dtmf_duration(0)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "%s EXCESSIVE DTMF DIGIT [%c] LEN [%d]\n",
switch_channel_get_name(session->channel), dtmf.digit, dtmf.duration);
dtmf.duration = switch_core_max_dtmf_duration(0);
} else if (dtmf.duration < switch_core_min_dtmf_duration(0)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_WARNING, "%s SHORT DTMF DIGIT [%c] LEN [%d]\n",
switch_channel_get_name(session->channel), dtmf.digit, dtmf.duration);
dtmf.duration = switch_core_min_dtmf_duration(0);
}
}
if (!dtmf.duration) {
dtmf.duration = switch_core_default_dtmf_duration(0);
}
if (switch_core_session_send_dtmf(session, &dtmf) == SWITCH_STATUS_SUCCESS) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, "%s send dtmf\ndigit=%c ms=%u samples=%u\n",
switch_channel_get_name(session->channel), dtmf.digit, dur, dtmf.duration);
sent++;
dur_total += dtmf.duration + 2000; /* account for 250ms pause */
}
}
}
if (dur_total) {
char tmp[32] = "";
switch_snprintf(tmp, sizeof(tmp), "%d", dur_total / 8);
switch_channel_set_variable(session->channel, "last_dtmf_duration", tmp);
}
}
return sent ? SWITCH_STATUS_SUCCESS : SWITCH_STATUS_FALSE;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet:
*/
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