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1 /* | |
2 * Copyright (c) 2004 The WebRTC project authors. All Rights Reserved. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license | |
5 * that can be found in the LICENSE file in the root of the source | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #include "webrtc/media/devices/devicemanager.h" | |
12 | |
13 #include "webrtc/base/fileutils.h" | |
14 #include "webrtc/base/logging.h" | |
15 #include "webrtc/base/pathutils.h" | |
16 #include "webrtc/base/stringutils.h" | |
17 #include "webrtc/base/thread.h" | |
18 #include "webrtc/base/windowpicker.h" | |
19 #include "webrtc/base/windowpickerfactory.h" | |
20 #include "webrtc/media/base/mediacommon.h" | |
21 #include "webrtc/media/base/videocapturer.h" | |
22 #include "webrtc/media/base/videocapturerfactory.h" | |
23 #include "webrtc/media/devices/deviceinfo.h" | |
24 | |
25 #ifdef HAVE_WEBRTC_VIDEO | |
26 #include "webrtc/media/engine/webrtcvideocapturerfactory.h" | |
27 #endif // HAVE_WEBRTC_VIDEO | |
28 | |
29 namespace { | |
30 | |
31 bool StringMatchWithWildcard( | |
32 const std::pair<const std::basic_string<char>, cricket::VideoFormat> key, | |
33 const std::string& val) { | |
34 return rtc::string_match(val.c_str(), key.first.c_str()); | |
35 } | |
36 | |
37 } // namespace | |
38 | |
39 namespace cricket { | |
40 | |
41 // Initialize to empty string. | |
42 const char DeviceManagerInterface::kDefaultDeviceName[] = ""; | |
43 | |
44 DeviceManager::DeviceManager() | |
45 : initialized_(false), | |
46 window_picker_(rtc::WindowPickerFactory::CreateWindowPicker()) { | |
47 #ifdef HAVE_WEBRTC_VIDEO | |
48 SetVideoDeviceCapturerFactory(new WebRtcVideoDeviceCapturerFactory()); | |
49 #endif // HAVE_WEBRTC_VIDEO | |
50 } | |
51 | |
52 DeviceManager::~DeviceManager() { | |
53 if (initialized()) { | |
54 Terminate(); | |
55 } | |
56 } | |
57 | |
58 bool DeviceManager::Init() { | |
59 if (!initialized()) { | |
60 if (!watcher()->Start()) { | |
61 return false; | |
62 } | |
63 set_initialized(true); | |
64 } | |
65 return true; | |
66 } | |
67 | |
68 void DeviceManager::Terminate() { | |
69 if (initialized()) { | |
70 watcher()->Stop(); | |
71 set_initialized(false); | |
72 } | |
73 } | |
74 | |
75 int DeviceManager::GetCapabilities() { | |
76 std::vector<Device> devices; | |
77 int caps = VIDEO_RECV; | |
78 if (GetAudioInputDevices(&devices) && !devices.empty()) { | |
79 caps |= AUDIO_SEND; | |
80 } | |
81 if (GetAudioOutputDevices(&devices) && !devices.empty()) { | |
82 caps |= AUDIO_RECV; | |
83 } | |
84 if (GetVideoCaptureDevices(&devices) && !devices.empty()) { | |
85 caps |= VIDEO_SEND; | |
86 } | |
87 return caps; | |
88 } | |
89 | |
90 bool DeviceManager::GetAudioInputDevices(std::vector<Device>* devices) { | |
91 return GetAudioDevices(true, devices); | |
92 } | |
93 | |
94 bool DeviceManager::GetAudioOutputDevices(std::vector<Device>* devices) { | |
95 return GetAudioDevices(false, devices); | |
96 } | |
97 | |
98 bool DeviceManager::GetAudioInputDevice(const std::string& name, Device* out) { | |
99 return GetAudioDevice(true, name, out); | |
100 } | |
101 | |
102 bool DeviceManager::GetAudioOutputDevice(const std::string& name, Device* out) { | |
103 return GetAudioDevice(false, name, out); | |
104 } | |
105 | |
106 bool DeviceManager::GetVideoCaptureDevices(std::vector<Device>* devices) { | |
107 devices->clear(); | |
108 #if defined(ANDROID) || defined(WEBRTC_IOS) | |
109 // On Android and iOS, we treat the camera(s) as a single device. Even if | |
110 // there are multiple cameras, that's abstracted away at a higher level. | |
111 Device dev("camera", "1"); // name and ID | |
112 devices->push_back(dev); | |
113 return true; | |
114 #else | |
115 return false; | |
116 #endif | |
117 } | |
118 | |
119 bool DeviceManager::GetVideoCaptureDevice(const std::string& name, | |
120 Device* out) { | |
121 // If the name is empty, return the default device. | |
122 if (name.empty() || name == kDefaultDeviceName) { | |
123 return GetDefaultVideoCaptureDevice(out); | |
124 } | |
125 | |
126 std::vector<Device> devices; | |
127 if (!GetVideoCaptureDevices(&devices)) { | |
128 return false; | |
129 } | |
130 | |
131 for (std::vector<Device>::const_iterator it = devices.begin(); | |
132 it != devices.end(); ++it) { | |
133 if (name == it->name) { | |
134 *out = *it; | |
135 return true; | |
136 } | |
137 } | |
138 | |
139 return false; | |
140 } | |
141 | |
142 void DeviceManager::SetVideoCaptureDeviceMaxFormat( | |
143 const std::string& usb_id, | |
144 const VideoFormat& max_format) { | |
145 max_formats_[usb_id] = max_format; | |
146 } | |
147 | |
148 void DeviceManager::ClearVideoCaptureDeviceMaxFormat( | |
149 const std::string& usb_id) { | |
150 max_formats_.erase(usb_id); | |
151 } | |
152 | |
153 VideoCapturer* DeviceManager::CreateVideoCapturer(const Device& device) const { | |
154 if (!video_device_capturer_factory_) { | |
155 LOG(LS_ERROR) << "No video capturer factory for devices."; | |
156 return NULL; | |
157 } | |
158 cricket::VideoCapturer* capturer = | |
159 video_device_capturer_factory_->Create(device); | |
160 if (!capturer) { | |
161 return NULL; | |
162 } | |
163 LOG(LS_INFO) << "Created VideoCapturer for " << device.name; | |
164 VideoFormat video_format; | |
165 bool has_max = GetMaxFormat(device, &video_format); | |
166 capturer->set_enable_camera_list(has_max); | |
167 if (has_max) { | |
168 capturer->ConstrainSupportedFormats(video_format); | |
169 } | |
170 return capturer; | |
171 } | |
172 | |
173 bool DeviceManager::GetWindows( | |
174 std::vector<rtc::WindowDescription>* descriptions) { | |
175 if (!window_picker_) { | |
176 return false; | |
177 } | |
178 return window_picker_->GetWindowList(descriptions); | |
179 } | |
180 | |
181 bool DeviceManager::GetDesktops( | |
182 std::vector<rtc::DesktopDescription>* descriptions) { | |
183 if (!window_picker_) { | |
184 return false; | |
185 } | |
186 return window_picker_->GetDesktopList(descriptions); | |
187 } | |
188 | |
189 VideoCapturer* DeviceManager::CreateScreenCapturer( | |
190 const ScreencastId& screenid) const { | |
191 if (!screen_capturer_factory_) { | |
192 LOG(LS_ERROR) << "No video capturer factory for screens."; | |
193 return NULL; | |
194 } | |
195 return screen_capturer_factory_->Create(screenid); | |
196 } | |
197 | |
198 bool DeviceManager::GetAudioDevices(bool input, | |
199 std::vector<Device>* devs) { | |
200 devs->clear(); | |
201 #if defined(ANDROID) | |
202 // Under Android, 0 is always required for the playout device and 0 is the | |
203 // default for the recording device. | |
204 devs->push_back(Device("default-device", 0)); | |
205 return true; | |
206 #else | |
207 // Other platforms either have their own derived class implementation | |
208 // (desktop) or don't use device manager for audio devices (iOS). | |
209 return false; | |
210 #endif | |
211 } | |
212 | |
213 bool DeviceManager::GetAudioDevice(bool is_input, const std::string& name, | |
214 Device* out) { | |
215 // If the name is empty, return the default device id. | |
216 if (name.empty() || name == kDefaultDeviceName) { | |
217 *out = Device(name, -1); | |
218 return true; | |
219 } | |
220 | |
221 std::vector<Device> devices; | |
222 bool ret = is_input ? GetAudioInputDevices(&devices) : | |
223 GetAudioOutputDevices(&devices); | |
224 if (ret) { | |
225 ret = false; | |
226 for (size_t i = 0; i < devices.size(); ++i) { | |
227 if (devices[i].name == name) { | |
228 *out = devices[i]; | |
229 ret = true; | |
230 break; | |
231 } | |
232 } | |
233 } | |
234 return ret; | |
235 } | |
236 | |
237 bool DeviceManager::GetDefaultVideoCaptureDevice(Device* device) { | |
238 bool ret = false; | |
239 // We just return the first device. | |
240 std::vector<Device> devices; | |
241 ret = (GetVideoCaptureDevices(&devices) && !devices.empty()); | |
242 if (ret) { | |
243 *device = devices[0]; | |
244 } | |
245 return ret; | |
246 } | |
247 | |
248 bool DeviceManager::IsInWhitelist(const std::string& key, | |
249 VideoFormat* video_format) const { | |
250 std::map<std::string, VideoFormat>::const_iterator found = | |
251 std::search_n(max_formats_.begin(), max_formats_.end(), 1, key, | |
252 StringMatchWithWildcard); | |
253 if (found == max_formats_.end()) { | |
254 return false; | |
255 } | |
256 *video_format = found->second; | |
257 return true; | |
258 } | |
259 | |
260 bool DeviceManager::GetMaxFormat(const Device& device, | |
261 VideoFormat* video_format) const { | |
262 // Match USB ID if available. Failing that, match device name. | |
263 std::string usb_id; | |
264 if (GetUsbId(device, &usb_id) && IsInWhitelist(usb_id, video_format)) { | |
265 return true; | |
266 } | |
267 return IsInWhitelist(device.name, video_format); | |
268 } | |
269 | |
270 bool DeviceManager::ShouldDeviceBeIgnored(const std::string& device_name, | |
271 const char* const exclusion_list[]) { | |
272 // If exclusion_list is empty return directly. | |
273 if (!exclusion_list) | |
274 return false; | |
275 | |
276 int i = 0; | |
277 while (exclusion_list[i]) { | |
278 if (strnicmp(device_name.c_str(), exclusion_list[i], | |
279 strlen(exclusion_list[i])) == 0) { | |
280 LOG(LS_INFO) << "Ignoring device " << device_name; | |
281 return true; | |
282 } | |
283 ++i; | |
284 } | |
285 return false; | |
286 } | |
287 | |
288 bool DeviceManager::FilterDevices(std::vector<Device>* devices, | |
289 const char* const exclusion_list[]) { | |
290 if (!devices) { | |
291 return false; | |
292 } | |
293 | |
294 for (std::vector<Device>::iterator it = devices->begin(); | |
295 it != devices->end(); ) { | |
296 if (ShouldDeviceBeIgnored(it->name, exclusion_list)) { | |
297 it = devices->erase(it); | |
298 } else { | |
299 ++it; | |
300 } | |
301 } | |
302 return true; | |
303 } | |
304 | |
305 } // namespace cricket | |
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