1 /*
2 * libjingle
3 * Copyright 2013 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 #include "talk/app/webrtc/remotevideocapturer.h"
29
30 #include "talk/media/base/videoframe.h"
31 #include "webrtc/base/logging.h"
32
33 namespace webrtc {
34
RemoteVideoCapturer()35 RemoteVideoCapturer::RemoteVideoCapturer() {}
36
~RemoteVideoCapturer()37 RemoteVideoCapturer::~RemoteVideoCapturer() {}
38
Start(const cricket::VideoFormat & capture_format)39 cricket::CaptureState RemoteVideoCapturer::Start(
40 const cricket::VideoFormat& capture_format) {
41 if (capture_state() == cricket::CS_RUNNING) {
42 LOG(LS_WARNING)
43 << "RemoteVideoCapturer::Start called when it's already started.";
44 return capture_state();
45 }
46
47 LOG(LS_INFO) << "RemoteVideoCapturer::Start";
48 SetCaptureFormat(&capture_format);
49 return cricket::CS_RUNNING;
50 }
51
Stop()52 void RemoteVideoCapturer::Stop() {
53 if (capture_state() == cricket::CS_STOPPED) {
54 LOG(LS_WARNING)
55 << "RemoteVideoCapturer::Stop called when it's already stopped.";
56 return;
57 }
58
59 LOG(LS_INFO) << "RemoteVideoCapturer::Stop";
60 SetCaptureFormat(NULL);
61 SetCaptureState(cricket::CS_STOPPED);
62 }
63
IsRunning()64 bool RemoteVideoCapturer::IsRunning() {
65 return capture_state() == cricket::CS_RUNNING;
66 }
67
GetPreferredFourccs(std::vector<uint32_t> * fourccs)68 bool RemoteVideoCapturer::GetPreferredFourccs(std::vector<uint32_t>* fourccs) {
69 if (!fourccs)
70 return false;
71 fourccs->push_back(cricket::FOURCC_I420);
72 return true;
73 }
74
GetBestCaptureFormat(const cricket::VideoFormat & desired,cricket::VideoFormat * best_format)75 bool RemoteVideoCapturer::GetBestCaptureFormat(
76 const cricket::VideoFormat& desired, cricket::VideoFormat* best_format) {
77 if (!best_format) {
78 return false;
79 }
80
81 // RemoteVideoCapturer does not support capability enumeration.
82 // Use the desired format as the best format.
83 best_format->width = desired.width;
84 best_format->height = desired.height;
85 best_format->fourcc = cricket::FOURCC_I420;
86 best_format->interval = desired.interval;
87 return true;
88 }
89
IsScreencast() const90 bool RemoteVideoCapturer::IsScreencast() const {
91 // TODO(ronghuawu): what about remote screencast stream.
92 return false;
93 }
94
95 } // namespace webrtc
96