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
33namespace webrtc {
34
35RemoteVideoCapturer::RemoteVideoCapturer() {}
36
37RemoteVideoCapturer::~RemoteVideoCapturer() {}
38
39cricket::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
52void 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
64bool RemoteVideoCapturer::IsRunning() {
65  return capture_state() == cricket::CS_RUNNING;
66}
67
68bool RemoteVideoCapturer::GetPreferredFourccs(std::vector<uint32>* fourccs) {
69  if (!fourccs)
70    return false;
71  fourccs->push_back(cricket::FOURCC_I420);
72  return true;
73}
74
75bool 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
90bool RemoteVideoCapturer::IsScreencast() const {
91  // TODO(ronghuawu): what about remote screencast stream.
92  return false;
93}
94
95}  // namespace webrtc
96