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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/pc/media_stream_observer.cc | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/pc/media_stream_observer.cc')
-rw-r--r-- | third_party/libwebrtc/pc/media_stream_observer.cc | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/third_party/libwebrtc/pc/media_stream_observer.cc b/third_party/libwebrtc/pc/media_stream_observer.cc new file mode 100644 index 0000000000..6264a7657a --- /dev/null +++ b/third_party/libwebrtc/pc/media_stream_observer.cc @@ -0,0 +1,98 @@ +/* + * Copyright 2015 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "pc/media_stream_observer.h" + +#include <functional> +#include <string> +#include <utility> +#include <vector> + +#include "absl/algorithm/container.h" + +namespace webrtc { + +MediaStreamObserver::MediaStreamObserver( + MediaStreamInterface* stream, + std::function<void(AudioTrackInterface*, MediaStreamInterface*)> + audio_track_added_callback, + std::function<void(AudioTrackInterface*, MediaStreamInterface*)> + audio_track_removed_callback, + std::function<void(VideoTrackInterface*, MediaStreamInterface*)> + video_track_added_callback, + std::function<void(VideoTrackInterface*, MediaStreamInterface*)> + video_track_removed_callback) + : stream_(stream), + cached_audio_tracks_(stream->GetAudioTracks()), + cached_video_tracks_(stream->GetVideoTracks()), + audio_track_added_callback_(std::move(audio_track_added_callback)), + audio_track_removed_callback_(std::move(audio_track_removed_callback)), + video_track_added_callback_(std::move(video_track_added_callback)), + video_track_removed_callback_(std::move(video_track_removed_callback)) { + stream_->RegisterObserver(this); +} + +MediaStreamObserver::~MediaStreamObserver() { + stream_->UnregisterObserver(this); +} + +void MediaStreamObserver::OnChanged() { + AudioTrackVector new_audio_tracks = stream_->GetAudioTracks(); + VideoTrackVector new_video_tracks = stream_->GetVideoTracks(); + + // Find removed audio tracks. + for (const auto& cached_track : cached_audio_tracks_) { + if (absl::c_none_of( + new_audio_tracks, + [cached_track](const AudioTrackVector::value_type& new_track) { + return new_track->id() == cached_track->id(); + })) { + audio_track_removed_callback_(cached_track.get(), stream_.get()); + } + } + + // Find added audio tracks. + for (const auto& new_track : new_audio_tracks) { + if (absl::c_none_of( + cached_audio_tracks_, + [new_track](const AudioTrackVector::value_type& cached_track) { + return new_track->id() == cached_track->id(); + })) { + audio_track_added_callback_(new_track.get(), stream_.get()); + } + } + + // Find removed video tracks. + for (const auto& cached_track : cached_video_tracks_) { + if (absl::c_none_of( + new_video_tracks, + [cached_track](const VideoTrackVector::value_type& new_track) { + return new_track->id() == cached_track->id(); + })) { + video_track_removed_callback_(cached_track.get(), stream_.get()); + } + } + + // Find added video tracks. + for (const auto& new_track : new_video_tracks) { + if (absl::c_none_of( + cached_video_tracks_, + [new_track](const VideoTrackVector::value_type& cached_track) { + return new_track->id() == cached_track->id(); + })) { + video_track_added_callback_(new_track.get(), stream_.get()); + } + } + + cached_audio_tracks_ = new_audio_tracks; + cached_video_tracks_ = new_video_tracks; +} + +} // namespace webrtc |