86 lines
2.9 KiB
C++
86 lines
2.9 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_API_VIDEOCAPTURERTRACKSOURCE_H_
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#define WEBRTC_API_VIDEOCAPTURERTRACKSOURCE_H_
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#include <memory>
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#include "webrtc/api/mediastreaminterface.h"
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#include "webrtc/api/videotracksource.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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// 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.
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// VideoCapturerTrackSource take ownership of |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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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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cricket::VideoCapturer* capturer,
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bool remote);
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bool is_screencast() const override {
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return video_capturer_->IsScreencast();
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}
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rtc::Optional<bool> needs_denoising() const override {
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return needs_denoising_;
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}
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bool GetStats(Stats* stats) override;
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void Stop() override;
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void Restart() override;
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protected:
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VideoCapturerTrackSource(rtc::Thread* worker_thread,
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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 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_API_VIDEOCAPTURERTRACKSOURCE_H_
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