diff options
Diffstat (limited to 'branches/1.0/tinyDAV/src/audio/tdav_session_audio.c')
| -rw-r--r-- | branches/1.0/tinyDAV/src/audio/tdav_session_audio.c | 892 |
1 files changed, 0 insertions, 892 deletions
diff --git a/branches/1.0/tinyDAV/src/audio/tdav_session_audio.c b/branches/1.0/tinyDAV/src/audio/tdav_session_audio.c deleted file mode 100644 index 9a94b5c..0000000 --- a/branches/1.0/tinyDAV/src/audio/tdav_session_audio.c +++ /dev/null @@ -1,892 +0,0 @@ -/*
-* Copyright (C) 2009-2010 Mamadou Diop.
-*
-* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
-*
-* This file is part of Open Source Doubango Framework.
-*
-* DOUBANGO is free software: you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation, either version 3 of the License, or
-* (at your option) any later version.
-*
-* DOUBANGO is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with DOUBANGO.
-*
-*/
-
-/**@file tdav_session_audio.c
- * @brief Audio Session plugin.
- *
- * @author Mamadou Diop <diopmamadou(at)doubango.org>
- *
- * @date Created: Sat Nov 8 16:54:58 2009 mdiop
- */
-#include "tinydav/audio/tdav_session_audio.h"
-
-#include "tinydav/codecs/dtmf/tdav_codec_dtmf.h"
-#include "tinydav/audio/tdav_consumer_audio.h"
-
-#include "tinymedia/tmedia_denoise.h"
-#include "tinymedia/tmedia_consumer.h"
-#include "tinymedia/tmedia_producer.h"
-
-#include "tinyrtp/trtp_manager.h"
-#include "tinyrtp/rtp/trtp_rtp_packet.h"
-
-#include "tsk_timer.h"
-#include "tsk_memory.h"
-#include "tsk_debug.h"
-
-#define IS_DTMF_CODEC(codec) (TMEDIA_CODEC((codec))->plugin == tdav_codec_dtmf_plugin_def_t)
-
-static int _tdav_session_audio_dtmfe_timercb(const void* arg, tsk_timer_id_t timer_id);
-static struct tdav_session_audio_dtmfe_s* _tdav_session_audio_dtmfe_create(const tdav_session_audio_t* session, uint8_t event, uint16_t duration, uint32_t seq, uint32_t timestamp, uint8_t format, tsk_bool_t M, tsk_bool_t E);
-static const tmedia_codec_t* _tdav_first_best_neg_codec(const tdav_session_audio_t* session);
-
-
-/* DTMF event object */
-typedef struct tdav_session_audio_dtmfe_s
-{
- TSK_DECLARE_OBJECT;
-
- tsk_timer_id_t timer_id;
- trtp_rtp_packet_t* packet;
-
- const tdav_session_audio_t* session;
-}
-tdav_session_audio_dtmfe_t;
-extern const tsk_object_def_t *tdav_session_audio_dtmfe_def_t;
-
-// RTP/RTCP callback (From the network to the consumer)
-static int tdav_session_audio_rtp_cb(const void* callback_data, const struct trtp_rtp_packet_s* packet)
-{
- tdav_session_audio_t* audio = (tdav_session_audio_t*)callback_data;
-
- if(!audio || !packet){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- if(audio->consumer){
- tsk_size_t out_size = 0;
- tmedia_codec_t* codec;
- tsk_istr_t format;
-
- // Find the codec to use to decode the RTP payload
- tsk_itoa(packet->header->payload_type, &format);
- if(!(codec = tmedia_codec_find_by_format(TMEDIA_SESSION(audio)->neg_codecs, format)) || !codec->plugin || !codec->plugin->decode){
- TSK_DEBUG_ERROR("%s is not a valid payload for this session", format);
- TSK_OBJECT_SAFE_FREE(codec);
- return -2;
- }
- // Open codec if not already done
- if(!TMEDIA_CODEC(codec)->opened){
- int ret;
- tsk_safeobj_lock(audio);
- if((ret = tmedia_codec_open(codec))){
- tsk_safeobj_unlock(audio);
- TSK_OBJECT_SAFE_FREE(codec);
- TSK_DEBUG_ERROR("Failed to open [%s] codec", codec->plugin->desc);
- return ret;
- }
- tsk_safeobj_unlock(audio);
- }
- // Decode data
- out_size = codec->plugin->decode(codec, packet->payload.data, packet->payload.size, &audio->decoder.buffer, &audio->decoder.buffer_size, packet->header);
- if(out_size){
- // Denoise (VAD, AGC, Noise suppression, ...)
- // See tdav_consumer_audio.c::tdav_consumer_audio_get()
- //if(audio->denoise && TMEDIA_DENOISE(audio->denoise)->opened){
- // tmedia_denoise_echo_playback(TMEDIA_DENOISE(audio->denoise), audio->decoder.buffer);
- //}
- tmedia_consumer_consume(audio->consumer, &audio->decoder.buffer, out_size, packet->header);
- if(!audio->decoder.buffer){
- /* taken by the consumer */
- audio->decoder.buffer_size = 0;
- }
- }
- TSK_OBJECT_SAFE_FREE(codec);
- }
- return 0;
-}
-
-// Producer callback (From the producer to the network). Will encode() data before sending
-static int tdav_session_audio_producer_enc_cb(const void* callback_data, const void* buffer, tsk_size_t size)
-{
- int ret;
-
- tdav_session_audio_t* audio = (tdav_session_audio_t*)callback_data;
-
- if(audio->rtp_manager){
- /* encode */
- tsk_size_t out_size = 0;
-
- ret = 0;
-
- //
- // Find Encoder (call one time)
- //
- if(!audio->encoder.codec){
- tsk_list_item_t* item;
- tsk_list_foreach(item, TMEDIA_SESSION(audio)->neg_codecs){
- if(!tsk_striequals(TMEDIA_CODEC(item->data)->neg_format, TMEDIA_CODEC_FORMAT_DTMF) &&
- !tsk_striequals(TMEDIA_CODEC(item->data)->format, TMEDIA_CODEC_FORMAT_DTMF)){
- audio->encoder.codec = tsk_object_ref(item->data);
- trtp_manager_set_payload_type(audio->rtp_manager, audio->encoder.codec->neg_format ? atoi(audio->encoder.codec->neg_format) : atoi(audio->encoder.codec->format));
- /* Denoise */
- if(audio->denoise && !audio->denoise->opened){
- ret = tmedia_denoise_open(audio->denoise,
- TMEDIA_CODEC_PCM_FRAME_SIZE(audio->encoder.codec), //160 if 20ms at 8khz
- TMEDIA_CODEC_RATE(audio->encoder.codec), tsk_true, 8000.0f, tsk_true, tsk_false);
- }
- break;
- }
- }
- }
- if(!audio->encoder.codec){
- TSK_DEBUG_ERROR("Failed to find a valid codec");
- return -3;
- }
-
- // Open codec if not already done
- if(!audio->encoder.codec->opened){
- tsk_safeobj_lock(audio);
- if((ret = tmedia_codec_open(audio->encoder.codec))){
- tsk_safeobj_unlock(audio);
- TSK_DEBUG_ERROR("Failed to open [%s] codec", audio->encoder.codec->plugin->desc);
- return -4;
- }
- tsk_safeobj_unlock(audio);
- }
- // Denoise (VAD, AGC, Noise suppression, ...)
- if(audio->denoise){
- tsk_bool_t silence_or_noise = tsk_false;
- ret = tmedia_denoise_process(TMEDIA_DENOISE(audio->denoise), (void*)buffer, &silence_or_noise);
- if(silence_or_noise && (ret == 0)){
- //FIXME:
- TSK_DEBUG_INFO("Silence or Noise buffer");
- return 0;
- }
- }
-
- // Encode data
- if((audio->encoder.codec = tsk_object_ref(audio->encoder.codec))){ /* Thread safeness (SIP reINVITE or UPDATE could update the encoder) */
- out_size = audio->encoder.codec->plugin->encode(audio->encoder.codec, buffer, size, &audio->encoder.buffer, &audio->encoder.buffer_size);
- if(out_size){
- ret = trtp_manager_send_rtp(audio->rtp_manager, audio->encoder.buffer, out_size, TMEDIA_CODEC_PCM_FRAME_SIZE(audio->encoder.codec), tsk_false/*Marker*/, tsk_true/*lastPacket*/);
- }
- tsk_object_unref(audio->encoder.codec);
- }
- else{
- TSK_DEBUG_WARN("No encoder");
- }
- }
-
- return ret;
-}
-
-
-/* ============ Plugin interface ================= */
-
-int tdav_session_audio_set(tmedia_session_t* self, const tmedia_param_t* param)
-{
- int ret = 0;
- tdav_session_audio_t* audio;
-
- if(!self){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- audio = (tdav_session_audio_t*)self;
-
- if(param->plugin_type == tmedia_ppt_consumer){
- TSK_DEBUG_WARN("Not implemented");
- }
- else if(param->plugin_type == tmedia_ppt_producer){
- TSK_DEBUG_WARN("Not implemented");
- }
- else{
- if(param->value_type == tmedia_pvt_pchar){
- if(tsk_striequals(param->key, "remote-ip")){
- /* only if no ip associated to the "m=" line */
- if(param->value && !audio->remote_ip){
- audio->remote_ip = tsk_strdup(param->value);
- }
- }
- else if(tsk_striequals(param->key, "local-ip")){
- tsk_strupdate(&audio->local_ip, param->value);
- }
- else if(tsk_striequals(param->key, "local-ipver")){
- audio->useIPv6 = tsk_striequals(param->value, "ipv6");
- }
- }
- else if(param->value_type == tmedia_pvt_pobject){
- if(tsk_striequals(param->key, "natt-ctx")){
- TSK_OBJECT_SAFE_FREE(audio->natt_ctx);
- audio->natt_ctx = tsk_object_ref(param->value);
- }
- }
- }
-
- return ret;
-}
-
-int tdav_session_audio_prepare(tmedia_session_t* self)
-{
- tdav_session_audio_t* audio;
- int ret = 0;
-
- audio = (tdav_session_audio_t*)self;
-
- /* set local port */
- if(!audio->rtp_manager){
- if((audio->rtp_manager = trtp_manager_create(audio->rtcp_enabled, audio->local_ip, audio->useIPv6))){
-
- ret = trtp_manager_set_rtp_callback(audio->rtp_manager, tdav_session_audio_rtp_cb, audio);
- ret = trtp_manager_prepare(audio->rtp_manager);
- if(audio->natt_ctx){
- ret = trtp_manager_set_natt_ctx(audio->rtp_manager, audio->natt_ctx);
- }
- }
- }
-
- /* Consumer will be prepared in tdav_session_audio_start() */
- /* Producer will be prepared in tdav_session_audio_start() */
-
- return ret;
-}
-
-int tdav_session_audio_start(tmedia_session_t* self)
-{
- tdav_session_audio_t* audio;
- const tmedia_codec_t* codec;
-
- if(!self){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- audio = (tdav_session_audio_t*)self;
-
- if(!(codec = _tdav_first_best_neg_codec(audio))){
- TSK_DEBUG_ERROR("No codec matched");
- return -2;
- }
-
- if(audio->rtp_manager){
- int ret;
- /* RTP/RTCP manager: use latest information. */
- ret = trtp_manager_set_rtp_remote(audio->rtp_manager, audio->remote_ip, audio->remote_port);
- //trtp_manager_set_payload_type(audio->rtp_manager, codec->neg_format ? atoi(codec->neg_format) : atoi(codec->format));
- ret = trtp_manager_start(audio->rtp_manager);
-
- /* Consumer */
- if(audio->consumer){
- tmedia_consumer_prepare(audio->consumer, codec);
- tmedia_consumer_start(audio->consumer);
- }
- /* Producer */
- if(audio->producer){
- tmedia_producer_prepare(audio->producer, codec);
- tmedia_producer_start(audio->producer);
- }
- /* Denoise (AEC, Noise Suppression, AGC) */
- if(audio->denoise && audio->encoder.codec){
- tmedia_denoise_open(audio->denoise, TMEDIA_CODEC_PCM_FRAME_SIZE(audio->encoder.codec), TMEDIA_CODEC_RATE(audio->encoder.codec), tsk_true, 8000.0f, tsk_true, tsk_true);
- }
-
- /* for test */
- //trtp_manager_send_rtp(audio->rtp_manager, "test", 4, tsk_true);
- return ret;
- }
- else{
- TSK_DEBUG_ERROR("Invalid RTP/RTCP manager");
- return -3;
- }
-
- return 0;
-}
-
-int tdav_session_audio_stop(tmedia_session_t* self)
-{
- tdav_session_audio_t* audio;
-
- if(!self){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- audio = (tdav_session_audio_t*)self;
-
- /* RTP/RTCP manager */
- if(audio->rtp_manager){
- trtp_manager_stop(audio->rtp_manager);
- }
-
- /* Consumer */
- if(audio->consumer){
- tmedia_consumer_stop(audio->consumer);
- }
- /* Producer */
- if(audio->producer){
- tmedia_producer_stop(audio->producer);
- }
-
- return 0;
-}
-
-int tdav_session_audio_send_dtmf(tmedia_session_t* self, uint8_t event)
-{
- tdav_session_audio_t* audio;
- tmedia_codec_t* codec;
- int ret, rate = 8000, ptime = 20;
- uint16_t duration;
- tdav_session_audio_dtmfe_t *dtmfe, *copy;
- static uint32_t timestamp = 0x3200;
- static uint32_t seq_num = 0;
- int format = 101;
-
- if(!self){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- audio = (tdav_session_audio_t*)self;
-
- // Find the DTMF codec to use to use the RTP payload
- if((codec = tmedia_codec_find_by_format(TMEDIA_SESSION(audio)->codecs, TMEDIA_CODEC_FORMAT_DTMF))){
- rate = (int)codec->plugin->rate;
- format = atoi(codec->neg_format ? codec->neg_format : codec->format);
- TSK_OBJECT_SAFE_FREE(codec);
- }
-
- /* do we have an RTP manager? */
- if(!audio->rtp_manager){
- TSK_DEBUG_ERROR("No RTP manager associated to this session");
- return -2;
- }
-
- /* Create Events list */
- if(!audio->dtmf_events){
- audio->dtmf_events = tsk_list_create();
- }
-
- /* Create global reference to the timer manager */
- if(!audio->timer.created){
- if((ret = tsk_timer_mgr_global_ref())){
- TSK_DEBUG_ERROR("Failed to create Global Timer Manager");
- return ret;
- }
- audio->timer.created = tsk_true;
- }
-
- /* Start the timer manager */
- if(!audio->timer.started){
- if((ret = tsk_timer_mgr_global_start())){
- TSK_DEBUG_ERROR("Failed to start Global Timer Manager");
- return ret;
- }
- audio->timer.started = tsk_true;
- }
-
-
- /* RFC 4733 - 5. Examples
-
- +-------+-----------+------+--------+------+--------+--------+------+
- | Time | Event | M | Time- | Seq | Event | Dura- | E |
- | (ms) | | bit | stamp | No | Code | tion | bit |
- +-------+-----------+------+--------+------+--------+--------+------+
- | 0 | "9" | | | | | | |
- | | starts | | | | | | |
- | 50 | RTP | "1" | 0 | 1 | 9 | 400 | "0" |
- | | packet 1 | | | | | | |
- | | sent | | | | | | |
- | 100 | RTP | "0" | 0 | 2 | 9 | 800 | "0" |
- | | packet 2 | | | | | | |
- | | sent | | | | | | |
- | 150 | RTP | "0" | 0 | 3 | 9 | 1200 | "0" |
- | | packet 3 | | | | | | |
- | | sent | | | | | | |
- | 200 | RTP | "0" | 0 | 4 | 9 | 1600 | "0" |
- | | packet 4 | | | | | | |
- | | sent | | | | | | |
- | 200 | "9" ends | | | | | | |
- | 250 | RTP | "0" | 0 | 5 | 9 | 1600 | "1" |
- | | packet 4 | | | | | | |
- | | first | | | | | | |
- | | retrans- | | | | | | |
- | | mission | | | | | | |
- | 300 | RTP | "0" | 0 | 6 | 9 | 1600 | "1" |
- | | packet 4 | | | | | | |
- | | second | | | | | | |
- | | retrans- | | | | | | |
- | | mission | | | | | | |
- =====================================================================
- | 880 | First "1" | | | | | | |
- | | starts | | | | | | |
- | 930 | RTP | "1" | 7040 | 7 | 1 | 400 | "0" |
- | | packet 5 | | | | | | |
- | | sent | | | | | | |
- */
-
- // ref()(thread safeness)
- audio = tsk_object_ref(audio);
-
- duration = (rate * ptime)/1000;
- /* Not mandatory but elegant */
- timestamp += duration;
-
- copy = dtmfe = _tdav_session_audio_dtmfe_create(audio, event, duration*1, ++seq_num, timestamp, (uint8_t)format, tsk_true, tsk_false);
- tsk_list_push_back_data(audio->dtmf_events, (void**)&dtmfe);
- tsk_timer_mgr_global_schedule(ptime*0, _tdav_session_audio_dtmfe_timercb, copy);
- copy = dtmfe = _tdav_session_audio_dtmfe_create(audio, event, duration*2, ++seq_num, timestamp, (uint8_t)format, tsk_false, tsk_false);
- tsk_list_push_back_data(audio->dtmf_events, (void**)&dtmfe);
- tsk_timer_mgr_global_schedule(ptime*1, _tdav_session_audio_dtmfe_timercb, copy);
- copy = dtmfe = _tdav_session_audio_dtmfe_create(audio, event, duration*3, ++seq_num, timestamp, (uint8_t)format, tsk_false, tsk_false);
- tsk_list_push_back_data(audio->dtmf_events, (void**)&dtmfe);
- tsk_timer_mgr_global_schedule(ptime*2, _tdav_session_audio_dtmfe_timercb, copy);
-
- copy = dtmfe = _tdav_session_audio_dtmfe_create(audio, event, duration*4, ++seq_num, timestamp, (uint8_t)format, tsk_false, tsk_true);
- tsk_list_push_back_data(audio->dtmf_events, (void**)&dtmfe);
- tsk_timer_mgr_global_schedule(ptime*3, _tdav_session_audio_dtmfe_timercb, copy);
- copy = dtmfe = _tdav_session_audio_dtmfe_create(audio, event, duration*4, seq_num, timestamp, (uint8_t)format, tsk_false, tsk_true);
- tsk_list_push_back_data(audio->dtmf_events, (void**)&dtmfe);
- tsk_timer_mgr_global_schedule(ptime*4, _tdav_session_audio_dtmfe_timercb, copy);
- copy = dtmfe = _tdav_session_audio_dtmfe_create(audio, event, duration*4, seq_num, timestamp, (uint8_t)format, tsk_false, tsk_true);
- tsk_list_push_back_data(audio->dtmf_events, (void**)&dtmfe);
- tsk_timer_mgr_global_schedule(ptime*5, _tdav_session_audio_dtmfe_timercb, copy);
-
- // unref()(thread safeness)
- audio = tsk_object_unref(audio);
-
- return 0;
-}
-
-int tdav_session_audio_pause(tmedia_session_t* self)
-{
- tdav_session_audio_t* audio;
-
- audio = (tdav_session_audio_t*)self;
-
- if(!self){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- /* Consumer */
- if(audio->consumer){
- tmedia_consumer_pause(audio->consumer);
- }
- /* Producer */
- if(audio->producer){
- tmedia_producer_pause(audio->producer);
- }
-
- return 0;
-}
-
-const tsdp_header_M_t* tdav_session_audio_get_lo(tmedia_session_t* self)
-{
- tdav_session_audio_t* audio;
- tsk_bool_t changed = tsk_false;
-
- if(!self || !self->plugin){
- TSK_DEBUG_ERROR("Invalid parameter");
- return tsk_null;
- }
-
- audio = (tdav_session_audio_t*)self;
-
- if(!audio->rtp_manager || !audio->rtp_manager->transport){
- TSK_DEBUG_ERROR("RTP/RTCP manager in invalid");
- return tsk_null;
- }
-
- if(self->ro_changed && self->M.lo){
- /* Codecs */
- tsdp_header_A_removeAll_by_field(self->M.lo->Attributes, "fmtp");
- tsdp_header_A_removeAll_by_field(self->M.lo->Attributes, "rtpmap");
- tsk_list_clear_items(self->M.lo->FMTs);
-
- /* QoS */
- tsdp_header_A_removeAll_by_field(self->M.lo->Attributes, "curr");
- tsdp_header_A_removeAll_by_field(self->M.lo->Attributes, "des");
- tsdp_header_A_removeAll_by_field(self->M.lo->Attributes, "conf");
- }
-
- changed = (self->ro_changed || !self->M.lo);
-
- if(!self->M.lo){
- if((self->M.lo = tsdp_header_M_create(self->plugin->media, audio->rtp_manager->rtp.public_port, "RTP/AVP"))){
- /* If NATT is active, do not rely on the global IP address Connection line */
- if(audio->natt_ctx){
- tsdp_header_M_add_headers(self->M.lo,
- TSDP_HEADER_C_VA_ARGS("IN", audio->useIPv6 ? "IP6" : "IP4", audio->rtp_manager->rtp.public_ip),
- tsk_null);
- }
- /* 3GPP TS 24.229 - 6.1.1 General
- In order to support accurate bandwidth calculations, the UE may include the "a=ptime" attribute for all "audio" media
- lines as described in RFC 4566 [39]. If a UE receives an "audio" media line with "a=ptime" specified, the UE should
- transmit at the specified packetization rate. If a UE receives an "audio" media line which does not have "a=ptime"
- specified or the UE does not support the "a=ptime" attribute, the UE should transmit at the default codec packetization
- rate as defined in RFC 3551 [55A]. The UE will transmit consistent with the resources available from the network.
-
- For "video" and "audio" media types that utilize the RTP/RTCP, the UE shall specify the proposed bandwidth for each
- media stream utilizing the "b=" media descriptor and the "AS" bandwidth modifier in the SDP.
-
- The UE shall include the MIME subtype "telephone-event" in the "m=" media descriptor in the SDP for audio media
- flows that support both audio codec and DTMF payloads in RTP packets as described in RFC 4733 [23].
- */
- tsdp_header_M_add_headers(self->M.lo,
- TSDP_HEADER_A_VA_ARGS("ptime", "20"),
- tsk_null);
- // the "telephone-event" fmt/rtpmap is added below
- }
- else{
- TSK_DEBUG_ERROR("Failed to create lo");
- return tsk_null;
- }
- }
-
- /* from codecs to sdp */
- if(changed){
- tmedia_codecs_L_t* neg_codecs = tsk_null;
-
- if(self->M.ro){
- TSK_OBJECT_SAFE_FREE(self->neg_codecs);
- /* update negociated codecs */
- if((neg_codecs = tmedia_session_match_codec(self, self->M.ro))){
- self->neg_codecs = neg_codecs;
- TSK_OBJECT_SAFE_FREE(audio->encoder.codec);
- }
- /* from codecs to sdp */
- if(TSK_LIST_IS_EMPTY(self->neg_codecs) || ((self->neg_codecs->tail == self->neg_codecs->head) && IS_DTMF_CODEC(TSK_LIST_FIRST_DATA(self->neg_codecs)))){
- self->M.lo->port = 0; /* Keep the RTP transport and reuse it when we receive a reINVITE or UPDATE request */
- goto DONE;
- }
- else{
- tmedia_codec_to_sdp(self->neg_codecs, self->M.lo);
- }
- }
- else{
- /* from codecs to sdp */
- tmedia_codec_to_sdp(self->codecs, self->M.lo);
- }
-
- /* Hold/Resume */
- if(self->M.ro){
- if(tsdp_header_M_is_held(self->M.ro, tsk_false)){
- tsdp_header_M_hold(self->M.lo, tsk_false);
- }
- else{
- tsdp_header_M_resume(self->M.lo, tsk_false);
- }
- }
- ///* 3GPP TS 24.229 - 6.1.1 General
- // The UE shall include the MIME subtype "telephone-event" in the "m=" media descriptor in the SDP for audio media
- // flows that support both audio codec and DTMF payloads in RTP packets as described in RFC 4733 [23].
- //*/
- //tsdp_header_M_add_fmt(self->M.lo, TMEDIA_CODEC_FORMAT_DTMF);
- //tsdp_header_M_add_headers(self->M.lo,
- // TSDP_HEADER_A_VA_ARGS("fmtp", TMEDIA_CODEC_FORMAT_DTMF" 0-15"),
- // tsk_null);
- //tsdp_header_M_add_headers(self->M.lo,
- // TSDP_HEADER_A_VA_ARGS("rtpmap", TMEDIA_CODEC_FORMAT_DTMF" telephone-event/8000"),
- // tsk_null);
- /* QoS */
- if(self->qos){
- tmedia_qos_tline_t* ro_tline;
- if(self->M.ro && (ro_tline = tmedia_qos_tline_from_sdp(self->M.ro))){
- tmedia_qos_tline_set_ro(self->qos, ro_tline);
- TSK_OBJECT_SAFE_FREE(ro_tline);
- }
- tmedia_qos_tline_to_sdp(self->qos, self->M.lo);
- }
-DONE:;
- }
-
- return self->M.lo;
-}
-
-int tdav_session_audio_set_ro(tmedia_session_t* self, const tsdp_header_M_t* m)
-{
- tdav_session_audio_t* audio;
- tmedia_codecs_L_t* neg_codecs;
-
- if(!self || !m){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- audio = (tdav_session_audio_t*)self;
-
- /* update remote offer */
- TSK_OBJECT_SAFE_FREE(self->M.ro);
- self->M.ro = tsk_object_ref((void*)m);
-
- if(self->M.lo){
- if((neg_codecs = tmedia_session_match_codec(self, m))){
- /* update negociated codecs */
- TSK_OBJECT_SAFE_FREE(self->neg_codecs);
- self->neg_codecs = neg_codecs;
- TSK_OBJECT_SAFE_FREE(audio->encoder.codec);
- }
- else{
- TSK_DEBUG_ERROR("None Match");
- return -1;
- }
- /* QoS */
- if(self->qos){
- tmedia_qos_tline_t* ro_tline;
- if(self->M.ro && (ro_tline = tmedia_qos_tline_from_sdp(self->M.ro))){
- tmedia_qos_tline_set_ro(self->qos, ro_tline);
- TSK_OBJECT_SAFE_FREE(ro_tline);
- }
- }
- }
-
- /* get connection associated to this media line
- * If the connnection is global, then the manager will call tdav_session_audio_set() */
- if(m->C && m->C->addr){
- tsk_strupdate(&audio->remote_ip, m->C->addr);
- audio->useIPv6 = tsk_striequals(m->C->addrtype, "IP6");
- }
- /* set remote port */
- audio->remote_port = m->port;
-
-
- return 0;
-}
-
-/* first best negotiated codec (ignore dtmf) */
-const tmedia_codec_t* _tdav_first_best_neg_codec(const tdav_session_audio_t* session)
-{
- const tsk_list_item_t* item;
- tsk_list_foreach(item, TMEDIA_SESSION(session)->neg_codecs){
- if(!IS_DTMF_CODEC(item->data)){
- return TMEDIA_CODEC(item->data);
- }
- }
- return tsk_null;
-}
-
-
-/* Internal function used to create new DTMF event */
-tdav_session_audio_dtmfe_t* _tdav_session_audio_dtmfe_create(const tdav_session_audio_t* session, uint8_t event, uint16_t duration, uint32_t seq, uint32_t timestamp, uint8_t format, tsk_bool_t M, tsk_bool_t E)
-{
- tdav_session_audio_dtmfe_t* dtmfe;
- static uint8_t volume = 10;
- static uint32_t ssrc = 0x5234A8;
-
- uint8_t pay[4] = {0};
-
- /* RFC 4733 - 2.3. Payload Format
- 0 1 2 3
- 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- | event |E|R| volume | duration |
- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
- */
-
- if(!(dtmfe = tsk_object_new(tdav_session_audio_dtmfe_def_t))){
- TSK_DEBUG_ERROR("Failed to create new DTMF event");
- return tsk_null;
- }
- dtmfe->session = session;
-
- if(!(dtmfe->packet = trtp_rtp_packet_create((session && session->rtp_manager) ? session->rtp_manager->rtp.ssrc : ssrc, seq, timestamp, format, M))){
- TSK_DEBUG_ERROR("Failed to create DTMF RTP packet");
- TSK_OBJECT_SAFE_FREE(dtmfe);
- return tsk_null;
- }
-
- pay[0] = event;
- pay[1] |= ((E << 7) | (volume & 0x3F));
- pay[2] = (duration >> 8);
- pay[3] = (duration & 0xFF);
-
- /* set data */
- if((dtmfe->packet->payload.data = tsk_calloc(sizeof(pay), sizeof(uint8_t)))){
- memcpy(dtmfe->packet->payload.data, pay, sizeof(pay));
- dtmfe->packet->payload.size = sizeof(pay);
- }
-
- return dtmfe;
-}
-
-int _tdav_session_audio_dtmfe_timercb(const void* arg, tsk_timer_id_t timer_id)
-{
- tdav_session_audio_dtmfe_t* dtmfe = (tdav_session_audio_dtmfe_t*)arg;
- int ret;
-
- if(!dtmfe || !dtmfe->session){
- TSK_DEBUG_ERROR("Invalid parameter");
- return -1;
- }
-
- /* Send the data */
- TSK_DEBUG_INFO("Sending DTMF event");
- ret = trtp_manager_send_rtp_2(dtmfe->session->rtp_manager, dtmfe->packet);
-
- /* Remove and delete the event from the queue */
- tsk_list_remove_item_by_data(dtmfe->session->dtmf_events, dtmfe);
-
- return ret;
-}
-
-//=================================================================================================
-// Session Audio Plugin object definition
-//
-/* constructor */
-static tsk_object_t* tdav_session_audio_ctor(tsk_object_t * self, va_list * app)
-{
- tdav_session_audio_t *session = self;
- if(session){
- /* init base: called by tmedia_session_create() */
- /* init self */
- tsk_safeobj_init(session);
- if(!(session->consumer = tmedia_consumer_create(tdav_session_audio_plugin_def_t->type, TMEDIA_SESSION(session)->id))){
- TSK_DEBUG_ERROR("Failed to create Audio consumer");
- }
- if((session->producer = tmedia_producer_create(tdav_session_audio_plugin_def_t->type, TMEDIA_SESSION(session)->id))){
- tmedia_producer_set_enc_callback(session->producer, tdav_session_audio_producer_enc_cb, self);
- }
- else{
- TSK_DEBUG_ERROR("Failed to create Audio producer");
- }
- if(!(session->denoise = tmedia_denoise_create())){
- TSK_DEBUG_WARN("No Audio denoiser found");
- }
- else if(session->consumer){// IMPORTANT: This means that the consumer must be child of "tdav_consumer_audio_t" object.
- tdav_consumer_audio_set_denoise(TDAV_CONSUMER_AUDIO(session->consumer), session->denoise);
- }
- }
- return self;
-}
-/* destructor */
-static tsk_object_t* tdav_session_audio_dtor(tsk_object_t * self)
-{
- tdav_session_audio_t *session = self;
- if(session){
-
- // Do it in this order (deinit self first)
-
- /* Timer manager */
- if(session->timer.started){
- if(session->dtmf_events){
- /* Cancel all events */
- tsk_list_item_t* item;
- tsk_list_foreach(item, session->dtmf_events){
- tsk_timer_mgr_global_cancel(((tdav_session_audio_dtmfe_t*)item->data)->timer_id);
- }
- }
- tsk_timer_mgr_global_stop();
- }
- if(session->timer.created){
- tsk_timer_mgr_global_unref();
- }
- /* CleanUp the DTMF events */
- TSK_OBJECT_SAFE_FREE(session->dtmf_events);
-
- /* deinit self (rtp manager should be destroyed after the producer) */
- TSK_OBJECT_SAFE_FREE(session->consumer);
- TSK_OBJECT_SAFE_FREE(session->producer);
- TSK_OBJECT_SAFE_FREE(session->rtp_manager);
- TSK_FREE(session->remote_ip);
- TSK_FREE(session->local_ip);
- TSK_OBJECT_SAFE_FREE(session->denoise);
-
- TSK_OBJECT_SAFE_FREE(session->encoder.codec);
- TSK_FREE(session->encoder.buffer);
- TSK_FREE(session->decoder.buffer);
-
- /* NAT Traversal context */
- TSK_OBJECT_SAFE_FREE(session->natt_ctx);
-
- tsk_safeobj_deinit(session);
-
- /* deinit base */
- tmedia_session_deinit(self);
- }
-
- return self;
-}
-/* object definition */
-static const tsk_object_def_t tdav_session_audio_def_s =
-{
- sizeof(tdav_session_audio_t),
- tdav_session_audio_ctor,
- tdav_session_audio_dtor,
- tmedia_session_cmp,
-};
-/* plugin definition*/
-static const tmedia_session_plugin_def_t tdav_session_audio_plugin_def_s =
-{
- &tdav_session_audio_def_s,
-
- tmedia_audio,
- "audio",
-
- tdav_session_audio_set,
- tdav_session_audio_prepare,
- tdav_session_audio_start,
- tdav_session_audio_pause,
- tdav_session_audio_stop,
-
- /* Audio part */
- {
- tdav_session_audio_send_dtmf
- },
-
- tdav_session_audio_get_lo,
- tdav_session_audio_set_ro
-};
-const tmedia_session_plugin_def_t *tdav_session_audio_plugin_def_t = &tdav_session_audio_plugin_def_s;
-
-
-
-//=================================================================================================
-// DTMF event object definition
-//
-static tsk_object_t* tdav_session_audio_dtmfe_ctor(tsk_object_t * self, va_list * app)
-{
- tdav_session_audio_dtmfe_t *event = self;
- if(event){
- event->timer_id = TSK_INVALID_TIMER_ID;
- }
- return self;
-}
-
-static tsk_object_t* tdav_session_audio_dtmfe_dtor(tsk_object_t * self)
-{
- tdav_session_audio_dtmfe_t *event = self;
- if(event){
- TSK_OBJECT_SAFE_FREE(event->packet);
- }
-
- return self;
-}
-
-static int tdav_session_audio_dtmfe_cmp(const tsk_object_t *_e1, const tsk_object_t *_e2)
-{
- const tdav_session_audio_dtmfe_t *e1 = _e1;
- const tdav_session_audio_dtmfe_t *e2 = _e2;
-
- return (e1 - e2);
-}
-
-static const tsk_object_def_t tdav_session_audio_dtmfe_def_s =
-{
- sizeof(tdav_session_audio_dtmfe_t),
- tdav_session_audio_dtmfe_ctor,
- tdav_session_audio_dtmfe_dtor,
- tdav_session_audio_dtmfe_cmp,
-};
-const tsk_object_def_t *tdav_session_audio_dtmfe_def_t = &tdav_session_audio_dtmfe_def_s;
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