/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #include "mozilla/dom/VideoTrack.h" #include "mozilla/dom/VideoTrackList.h" #include "mozilla/dom/VideoTrackListBinding.h" namespace mozilla { namespace dom { JSObject* VideoTrackList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) { return VideoTrackListBinding::Wrap(aCx, this, aGivenProto); } VideoTrack* VideoTrackList::operator[](uint32_t aIndex) { MediaTrack* track = MediaTrackList::operator[](aIndex); return track->AsVideoTrack(); } void VideoTrackList::RemoveTrack(const RefPtr<MediaTrack>& aTrack) { // we need to find the video track before |MediaTrackList::RemoveTrack|. Or // mSelectedIndex will not be valid. The check of mSelectedIndex == -1 // need to be done after RemoveTrack. Also the call of // |MediaTrackList::RemoveTrack| is necessary even when mSelectedIndex = -1. bool found; VideoTrack* selectedVideoTrack = IndexedGetter(mSelectedIndex, found); MediaTrackList::RemoveTrack(aTrack); if (mSelectedIndex == -1) { // There was no selected track and we don't select another track on removal. return; } MOZ_ASSERT(found, "When mSelectedIndex is set it should point to a track"); MOZ_ASSERT(selectedVideoTrack, "The mSelectedIndex should be set to video track only"); // Let the caller of RemoveTrack deal with choosing the new selected track if // it removes the currently-selected track. if (aTrack == selectedVideoTrack) { mSelectedIndex = -1; return; } // The removed track was not the selected track and there is a // currently-selected video track. We need to find the new location of the // selected track. for (size_t ix = 0; ix < mTracks.Length(); ix++) { if (mTracks[ix] == selectedVideoTrack) { mSelectedIndex = ix; return; } } } void VideoTrackList::EmptyTracks() { mSelectedIndex = -1; MediaTrackList::EmptyTracks(); } VideoTrack* VideoTrackList::GetSelectedTrack() { if (mSelectedIndex < 0 || static_cast<size_t>(mSelectedIndex) >= mTracks.Length()) { return nullptr; } return operator[](mSelectedIndex); } VideoTrack* VideoTrackList::IndexedGetter(uint32_t aIndex, bool& aFound) { MediaTrack* track = MediaTrackList::IndexedGetter(aIndex, aFound); return track ? track->AsVideoTrack() : nullptr; } VideoTrack* VideoTrackList::GetTrackById(const nsAString& aId) { MediaTrack* track = MediaTrackList::GetTrackById(aId); return track ? track->AsVideoTrack() : nullptr; } } // namespace dom } // namespace mozilla