diff options
Diffstat (limited to 'tinyDAV/src/audio/tdav_session_audio.c')
| -rw-r--r-- | tinyDAV/src/audio/tdav_session_audio.c | 892 |
1 files changed, 892 insertions, 0 deletions
diff --git a/tinyDAV/src/audio/tdav_session_audio.c b/tinyDAV/src/audio/tdav_session_audio.c new file mode 100644 index 0000000..9a94b5c --- /dev/null +++ b/tinyDAV/src/audio/tdav_session_audio.c @@ -0,0 +1,892 @@ +/*
+* 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;
|
