1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* libjingle
* Copyright 2004--2008, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef TALK_SESSION_PHONE_CHANNELMANAGER_H_
#define TALK_SESSION_PHONE_CHANNELMANAGER_H_
#include <string>
#include <vector>
#include "talk/base/criticalsection.h"
#include "talk/base/sigslotrepeater.h"
#include "talk/base/thread.h"
#include "talk/p2p/base/session.h"
#include "talk/session/phone/voicechannel.h"
#include "talk/session/phone/mediaengine.h"
#include "talk/session/phone/devicemanager.h"
#ifdef USE_TALK_SOUND
#include "talk/sound/soundsystemfactory.h"
#endif
namespace cricket {
class Soundclip;
class VoiceChannel;
// ChannelManager allows the MediaEngine to run on a separate thread, and takes
// care of marshalling calls between threads. It also creates and keeps track of
// voice and video channels; by doing so, it can temporarily pause all the
// channels when a new audio or video device is chosen. The voice and video
// channels are stored in separate vectors, to easily allow operations on just
// voice or just video channels.
// ChannelManager also allows the application to discover what devices it has
// using device manager.
class ChannelManager : public talk_base::MessageHandler,
public sigslot::has_slots<> {
public:
// Creates the channel manager, and specifies the worker thread to use.
explicit ChannelManager(talk_base::Thread* worker);
// For testing purposes. Allows the media engine and dev manager to be mocks.
// The ChannelManager takes ownership of these objects.
ChannelManager(MediaEngine* me, DeviceManager* dm, talk_base::Thread* worker);
~ChannelManager();
// Accessors for the worker thread, allowing it to be set after construction,
// but before Init. set_worker_thread will return false if called after Init.
talk_base::Thread* worker_thread() const { return worker_thread_; }
bool set_worker_thread(talk_base::Thread* thread) {
if (initialized_) return false;
worker_thread_ = thread;
return true;
}
// Gets capabilities. Can be called prior to starting the media engine.
int GetCapabilities();
// Retrieves the list of supported audio & video codec types.
// Can be called before starting the media engine.
void GetSupportedAudioCodecs(std::vector<AudioCodec>* codecs) const;
void GetSupportedVideoCodecs(std::vector<VideoCodec>* codecs) const;
// Determines if a specific audio or video codec is supported.
// Can be called before starting the media engine.
bool FindAudioCodec(const AudioCodec& codec) const {
return media_engine_->FindAudioCodec(codec);
}
bool FindVideoCodec(const VideoCodec& video_codec) const {
return media_engine_->FindVideoCodec(video_codec);
}
// Indicates whether the media engine is started.
bool initialized() const { return initialized_; }
// Starts up the media engine.
bool Init();
// TODO: Remove this temporary API once Flute is updated.
bool Init(talk_base::Thread* thread) {
return set_worker_thread(thread) && Init();
}
// Shuts down the media engine.
void Terminate();
// The operations below all occur on the worker thread.
// Creates a voice channel, to be associated with the specified session.
VoiceChannel* CreateVoiceChannel(
BaseSession* session, const std::string& content_name, bool rtcp);
// Destroys a voice channel created with the Create API.
void DestroyVoiceChannel(VoiceChannel* voice_channel);
// Creates a video channel, synced with the specified voice channel, and
// associated with the specified session.
VideoChannel* CreateVideoChannel(
BaseSession* session, const std::string& content_name, bool rtcp,
VoiceChannel* voice_channel);
// Destroys a video channel created with the Create API.
void DestroyVideoChannel(VideoChannel* video_channel);
// Creates a soundclip.
Soundclip* CreateSoundclip();
// Destroys a soundclip created with the Create API.
void DestroySoundclip(Soundclip* soundclip);
// Indicates whether any channels exist.
bool has_channels() const {
return (!voice_channels_.empty() || !video_channels_.empty() ||
!soundclips_.empty());
}
// Configures the audio and video devices.
bool GetAudioOptions(std::string* wave_in_device,
std::string* wave_out_device, int* opts);
bool SetAudioOptions(const std::string& wave_in_device,
const std::string& wave_out_device, int opts);
bool SetOutputVolume(int level);
bool GetVideoOptions(std::string* cam_device);
bool SetVideoOptions(const std::string& cam_device);
bool SetDefaultVideoEncoderConfig(const VideoEncoderConfig& config);
// Starts/stops the local microphone and enables polling of the input level.
bool SetLocalMonitor(bool enable);
bool monitoring() const { return monitoring_; }
// Sets the local renderer where to renderer the local camera.
bool SetLocalRenderer(VideoRenderer* renderer);
// Starts and stops the local camera and renders it to the local renderer.
CaptureResult SetVideoCapture(bool capture);
bool capturing() const { return capturing_; }
// Configures the logging output of the mediaengine(s).
void SetVoiceLogging(int level, const char* filter);
void SetVideoLogging(int level, const char* filter);
// The operations below occur on the main thread.
bool GetAudioInputDevices(std::vector<std::string>* names);
bool GetAudioOutputDevices(std::vector<std::string>* names);
bool GetVideoCaptureDevices(std::vector<std::string>* names);
sigslot::repeater0<> SignalDevicesChange;
sigslot::signal1<bool> SignalVideoCaptureResult;
private:
typedef std::vector<VoiceChannel*> VoiceChannels;
typedef std::vector<VideoChannel*> VideoChannels;
typedef std::vector<Soundclip*> Soundclips;
void Construct();
bool Send(uint32 id, talk_base::MessageData* pdata);
VoiceChannel* CreateVoiceChannel_w(
BaseSession* session, const std::string& content_name, bool rtcp);
void DestroyVoiceChannel_w(VoiceChannel* voice_channel);
VideoChannel* CreateVideoChannel_w(
BaseSession* session, const std::string& content_name, bool rtcp,
VoiceChannel* voice_channel);
void DestroyVideoChannel_w(VideoChannel* video_channel);
Soundclip* CreateSoundclip_w();
void DestroySoundclip_w(Soundclip* soundclip);
bool SetAudioOptions_w(int opts, const Device* in_dev,
const Device* out_dev);
bool SetOutputVolume_w(int level);
bool SetLocalMonitor_w(bool enable);
bool SetVideoOptions_w(const Device* cam_device);
bool SetDefaultVideoEncoderConfig_w(const VideoEncoderConfig& config);
bool SetLocalRenderer_w(VideoRenderer* renderer);
CaptureResult SetVideoCapture_w(bool capture);
void SetMediaLogging(bool video, int level, const char* filter);
void SetMediaLogging_w(bool video, int level, const char* filter);
void OnVideoCaptureResult(bool result);
void OnMessage(talk_base::Message *message);
talk_base::CriticalSection crit_;
#ifdef USE_TALK_SOUND
talk_base::scoped_ptr<SoundSystemFactory> sound_system_factory_;
#endif
talk_base::scoped_ptr<MediaEngine> media_engine_;
talk_base::scoped_ptr<DeviceManager> device_manager_;
bool initialized_;
talk_base::Thread* main_thread_;
talk_base::Thread* worker_thread_;
VoiceChannels voice_channels_;
VideoChannels video_channels_;
Soundclips soundclips_;
std::string audio_in_device_;
std::string audio_out_device_;
int audio_options_;
std::string camera_device_;
VideoEncoderConfig default_video_encoder_config_;
VideoRenderer* local_renderer_;
bool capturing_;
bool monitoring_;
};
} // namespace cricket
#endif // TALK_SESSION_PHONE_CHANNELMANAGER_H_
|
