1 /*
2 * libjingle
3 * Copyright 2010 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifndef MSILBC_LIBRARY
29 #define MSILBC_LIBRARY "/usr/lib/mediastreamer/plugins/libmsilbc.so"
30 #endif
31
32 // LinphoneMediaEngine is a Linphone implementation of MediaEngine
33 extern "C" {
34 #include <mediastreamer2/mediastream.h>
35 #include <mediastreamer2/mssndcard.h>
36 #include <mediastreamer2/msfilter.h>
37 }
38
39 #include "talk/media/other/linphonemediaengine.h"
40
41 #include "talk/base/buffer.h"
42 #include "talk/base/event.h"
43 #include "talk/base/logging.h"
44 #include "talk/base/pathutils.h"
45 #include "talk/base/stream.h"
46 #include "talk/media/base/rtpdump.h"
47
48 #ifndef WIN32
49 #include <libgen.h>
50 #endif
51
52 namespace cricket {
53
54 ///////////////////////////////////////////////////////////////////////////
55 // Implementation of LinphoneMediaEngine.
56 ///////////////////////////////////////////////////////////////////////////
LinphoneMediaEngine(const std::string & ringWav,const std::string & callWav)57 LinphoneMediaEngine::LinphoneMediaEngine(const std::string& ringWav, const std::string& callWav) : ring_wav_(ringWav), call_wav_(callWav) { }
58
Init()59 bool LinphoneMediaEngine::Init() {
60 ortp_init();
61 ms_init();
62
63 #ifdef HAVE_ILBC
64 #ifndef WIN32
65 char * path = strdup(MSILBC_LIBRARY);
66 char * dirc = dirname(path);
67 ms_load_plugins(dirc);
68 #endif
69 if (ms_filter_codec_supported("iLBC"))
70 have_ilbc = 1;
71 else
72 have_ilbc = 0;
73 #else
74 have_ilbc = 0;
75 #endif
76
77 #ifdef HAVE_SPEEX
78 voice_codecs_.push_back(AudioCodec(110, payload_type_speex_wb.mime_type, payload_type_speex_wb.clock_rate, 0, 1, 8));
79 voice_codecs_.push_back(AudioCodec(111, payload_type_speex_nb.mime_type, payload_type_speex_nb.clock_rate, 0, 1, 7));
80 #endif
81
82 #ifdef HAVE_ILBC
83 if (have_ilbc)
84 voice_codecs_.push_back(AudioCodec(102, payload_type_ilbc.mime_type, payload_type_ilbc.clock_rate, 0, 1, 4));
85 #endif
86
87 voice_codecs_.push_back(AudioCodec(0, payload_type_pcmu8000.mime_type, payload_type_pcmu8000.clock_rate, 0, 1, 2));
88 voice_codecs_.push_back(AudioCodec(101, payload_type_telephone_event.mime_type, payload_type_telephone_event.clock_rate, 0, 1, 1));
89 return true;
90 }
91
Terminate()92 void LinphoneMediaEngine::Terminate() {
93 fflush(stdout);
94 }
95
96
GetCapabilities()97 int LinphoneMediaEngine::GetCapabilities() {
98 int capabilities = 0;
99 capabilities |= AUDIO_SEND;
100 capabilities |= AUDIO_RECV;
101 return capabilities;
102 }
103
CreateChannel()104 VoiceMediaChannel* LinphoneMediaEngine::CreateChannel() {
105 return new LinphoneVoiceChannel(this);
106 }
107
CreateVideoChannel(VoiceMediaChannel * voice_ch)108 VideoMediaChannel* LinphoneMediaEngine::CreateVideoChannel(VoiceMediaChannel* voice_ch) {
109 return NULL;
110 }
111
FindAudioCodec(const AudioCodec & c)112 bool LinphoneMediaEngine::FindAudioCodec(const AudioCodec &c) {
113 if (c.id == 0)
114 return true;
115 if (c.name == payload_type_telephone_event.mime_type)
116 return true;
117 #ifdef HAVE_SPEEX
118 if (c.name == payload_type_speex_wb.mime_type && c.clockrate == payload_type_speex_wb.clock_rate)
119 return true;
120 if (c.name == payload_type_speex_nb.mime_type && c.clockrate == payload_type_speex_nb.clock_rate)
121 return true;
122 #endif
123 #ifdef HAVE_ILBC
124 if (have_ilbc && c.name == payload_type_ilbc.mime_type)
125 return true;
126 #endif
127 return false;
128 }
129
130 ///////////////////////////////////////////////////////////////////////////
131 // Implementation of LinphoneVoiceChannel.
132 ///////////////////////////////////////////////////////////////////////////
LinphoneVoiceChannel(LinphoneMediaEngine * eng)133 LinphoneVoiceChannel::LinphoneVoiceChannel(LinphoneMediaEngine*eng)
134 : pt_(-1),
135 audio_stream_(0),
136 engine_(eng),
137 ring_stream_(0)
138 {
139
140 talk_base::Thread *thread = talk_base::ThreadManager::CurrentThread();
141 talk_base::SocketServer *ss = thread->socketserver();
142 socket_.reset(ss->CreateAsyncSocket(SOCK_DGRAM));
143
144 socket_->Bind(talk_base::SocketAddress("localhost",3000));
145 socket_->SignalReadEvent.connect(this, &LinphoneVoiceChannel::OnIncomingData);
146
147 }
148
~LinphoneVoiceChannel()149 LinphoneVoiceChannel::~LinphoneVoiceChannel()
150 {
151 fflush(stdout);
152 StopRing();
153
154 if (audio_stream_)
155 audio_stream_stop(audio_stream_);
156 }
157
SetPlayout(bool playout)158 bool LinphoneVoiceChannel::SetPlayout(bool playout) {
159 play_ = playout;
160 return true;
161 }
162
SetSendCodecs(const std::vector<AudioCodec> & codecs)163 bool LinphoneVoiceChannel::SetSendCodecs(const std::vector<AudioCodec>& codecs) {
164
165 bool first = true;
166 std::vector<AudioCodec>::const_iterator i;
167
168 ortp_set_log_level_mask(ORTP_MESSAGE|ORTP_WARNING|ORTP_ERROR|ORTP_FATAL);
169
170 for (i = codecs.begin(); i < codecs.end(); i++) {
171
172 if (!engine_->FindAudioCodec(*i))
173 continue;
174 #ifdef HAVE_ILBC
175 if (engine_->have_ilbc && i->name == payload_type_ilbc.mime_type) {
176 rtp_profile_set_payload(&av_profile, i->id, &payload_type_ilbc);
177 }
178 #endif
179 #ifdef HAVE_SPEEX
180 if (i->name == payload_type_speex_wb.mime_type && i->clockrate == payload_type_speex_wb.clock_rate) {
181 rtp_profile_set_payload(&av_profile, i->id, &payload_type_speex_wb);
182 } else if (i->name == payload_type_speex_nb.mime_type && i->clockrate == payload_type_speex_nb.clock_rate) {
183 rtp_profile_set_payload(&av_profile, i->id, &payload_type_speex_nb);
184 }
185 #endif
186
187 if (i->id == 0)
188 rtp_profile_set_payload(&av_profile, 0, &payload_type_pcmu8000);
189
190 if (i->name == payload_type_telephone_event.mime_type) {
191 rtp_profile_set_payload(&av_profile, i->id, &payload_type_telephone_event);
192 }
193
194 if (first) {
195 StopRing();
196 LOG(LS_INFO) << "Using " << i->name << "/" << i->clockrate;
197 pt_ = i->id;
198 audio_stream_ = audio_stream_start(&av_profile, 2000, "127.0.0.1", 3000, i->id, 250, 0);
199 first = false;
200 }
201 }
202
203 if (first) {
204 StopRing();
205 // We're being asked to set an empty list of codecs. This will only happen when
206 // working with a buggy client; let's try PCMU.
207 LOG(LS_WARNING) << "Received empty list of codces; using PCMU/8000";
208 audio_stream_ = audio_stream_start(&av_profile, 2000, "127.0.0.1", 3000, 0, 250, 0);
209 }
210
211 return true;
212 }
213
SetSend(SendFlags flag)214 bool LinphoneVoiceChannel::SetSend(SendFlags flag) {
215 mute_ = !flag;
216 return true;
217 }
218
OnPacketReceived(talk_base::Buffer * packet)219 void LinphoneVoiceChannel::OnPacketReceived(talk_base::Buffer* packet) {
220 const void* data = packet->data();
221 int len = packet->length();
222 uint8 buf[2048];
223 memcpy(buf, data, len);
224
225 /* We may receive packets with payload type 13: comfort noise. Linphone can't
226 * handle them, so let's ignore those packets.
227 */
228 int payloadtype = buf[1] & 0x7f;
229 if (play_ && payloadtype != 13)
230 socket_->SendTo(buf, len, talk_base::SocketAddress("localhost",2000));
231 }
232
StartRing(bool bIncomingCall)233 void LinphoneVoiceChannel::StartRing(bool bIncomingCall)
234 {
235 MSSndCard *sndcard = NULL;
236 sndcard=ms_snd_card_manager_get_default_card(ms_snd_card_manager_get());
237 if (sndcard)
238 {
239 if (bIncomingCall)
240 {
241 if (engine_->GetRingWav().size() > 0)
242 {
243 LOG(LS_VERBOSE) << "incoming ring. sound file: " << engine_->GetRingWav().c_str() << "\n";
244 ring_stream_ = ring_start (engine_->GetRingWav().c_str(), 1, sndcard);
245 }
246 }
247 else
248 {
249 if (engine_->GetCallWav().size() > 0)
250 {
251 LOG(LS_VERBOSE) << "outgoing ring. sound file: " << engine_->GetCallWav().c_str() << "\n";
252 ring_stream_ = ring_start (engine_->GetCallWav().c_str(), 1, sndcard);
253 }
254 }
255 }
256 }
257
StopRing()258 void LinphoneVoiceChannel::StopRing()
259 {
260 if (ring_stream_) {
261 ring_stop(ring_stream_);
262 ring_stream_ = 0;
263 }
264 }
265
OnIncomingData(talk_base::AsyncSocket * s)266 void LinphoneVoiceChannel::OnIncomingData(talk_base::AsyncSocket *s)
267 {
268 char *buf[2048];
269 int len;
270 len = s->Recv(buf, sizeof(buf));
271 talk_base::Buffer packet(buf, len);
272 if (network_interface_ && !mute_)
273 network_interface_->SendPacket(&packet);
274 }
275
276 }
277