f15fb452ef
The issue was that VideoCapturerTrackSource was adding a reference to itself, causing it to not be deleted even after no external objects reference it. The objects underneath it (threads for instance) may then be destroyed before the object dereferences them. BUG=webrtc:6487 Review-Url: https://codereview.webrtc.org/2717023002 Cr-Commit-Position: refs/heads/master@{#16841}
80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
/*
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* Copyright 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_PC_VIDEOCAPTURERTRACKSOURCE_H_
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#define WEBRTC_PC_VIDEOCAPTURERTRACKSOURCE_H_
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#include <memory>
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#include "webrtc/api/mediastreaminterface.h"
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#include "webrtc/base/asyncinvoker.h"
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#include "webrtc/base/sigslot.h"
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#include "webrtc/media/base/videocapturer.h"
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#include "webrtc/media/base/videocommon.h"
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#include "webrtc/pc/videotracksource.h"
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// VideoCapturerTrackSource implements VideoTrackSourceInterface. It owns a
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// cricket::VideoCapturer and make sure the camera is started at a resolution
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// that honors the constraints.
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// The state is set depending on the result of starting the capturer.
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// If the constraint can't be met or the capturer fails to start, the state
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// transition to kEnded, otherwise it transitions to kLive.
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namespace webrtc {
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class MediaConstraintsInterface;
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class VideoCapturerTrackSource : public VideoTrackSource,
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public sigslot::has_slots<> {
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public:
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// Creates an instance of VideoCapturerTrackSource from |capturer|.
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// |constraints| can be NULL and in that case the camera is opened using a
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// default resolution.
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static rtc::scoped_refptr<VideoTrackSourceInterface> Create(
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rtc::Thread* worker_thread,
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std::unique_ptr<cricket::VideoCapturer> capturer,
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const webrtc::MediaConstraintsInterface* constraints,
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bool remote);
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static rtc::scoped_refptr<VideoTrackSourceInterface> Create(
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rtc::Thread* worker_thread,
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std::unique_ptr<cricket::VideoCapturer> capturer,
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bool remote);
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bool is_screencast() const final { return video_capturer_->IsScreencast(); }
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rtc::Optional<bool> needs_denoising() const final { return needs_denoising_; }
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bool GetStats(Stats* stats) final;
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protected:
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VideoCapturerTrackSource(rtc::Thread* worker_thread,
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std::unique_ptr<cricket::VideoCapturer> capturer,
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bool remote);
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virtual ~VideoCapturerTrackSource();
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void Initialize(const webrtc::MediaConstraintsInterface* constraints);
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private:
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void Stop();
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void OnStateChange(cricket::VideoCapturer* capturer,
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cricket::CaptureState capture_state);
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rtc::Thread* signaling_thread_;
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rtc::Thread* worker_thread_;
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rtc::AsyncInvoker invoker_;
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std::unique_ptr<cricket::VideoCapturer> video_capturer_;
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bool started_;
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cricket::VideoFormat format_;
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rtc::Optional<bool> needs_denoising_;
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};
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} // namespace webrtc
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#endif // WEBRTC_PC_VIDEOCAPTURERTRACKSOURCE_H_
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