1/*
2 * Copyright (C) 2013 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef AVMediaCaptureSource_h
27#define AVMediaCaptureSource_h
28
29#if ENABLE(MEDIA_STREAM) && USE(AVFOUNDATION)
30
31#include "MediaStreamSource.h"
32#include <wtf/RetainPtr.h>
33
34OBJC_CLASS AVCaptureAudioDataOutput;
35OBJC_CLASS AVCaptureConnection;
36OBJC_CLASS AVCaptureDevice;
37OBJC_CLASS AVCaptureOutput;
38OBJC_CLASS AVCaptureSession;
39OBJC_CLASS AVCaptureVideoDataOutput;
40OBJC_CLASS WebCoreAVMediaCaptureSourceObserver;
41
42typedef struct opaqueCMSampleBuffer *CMSampleBufferRef;
43
44namespace WebCore {
45
46class AVMediaCaptureSource : public MediaStreamSource {
47public:
48    virtual ~AVMediaCaptureSource();
49
50    virtual void captureOutputDidOutputSampleBufferFromConnection(AVCaptureOutput*, CMSampleBufferRef, AVCaptureConnection*) = 0;
51
52    virtual void captureSessionStoppedRunning();
53
54protected:
55    AVMediaCaptureSource(AVCaptureDevice*, const AtomicString&, MediaStreamSource::Type, PassRefPtr<MediaConstraints>);
56
57    virtual const MediaStreamSourceStates& states() override;
58
59    virtual void startProducingData() override;
60    virtual void stopProducingData() override;
61
62    virtual void setupCaptureSession() = 0;
63    virtual void updateStates() = 0;
64
65    AVCaptureSession *session() const { return m_session.get(); }
66    AVCaptureDevice *device() const { return m_device.get(); }
67    MediaStreamSourceStates* currentStates() { return &m_currentStates; }
68    MediaConstraints* constraints() { return m_constraints.get(); }
69
70    void setVideoSampleBufferDelegate(AVCaptureVideoDataOutput*);
71    void setAudioSampleBufferDelegate(AVCaptureAudioDataOutput*);
72
73private:
74    void setupSession();
75
76    RetainPtr<WebCoreAVMediaCaptureSourceObserver> m_objcObserver;
77    RefPtr<MediaConstraints> m_constraints;
78    MediaStreamSourceStates m_currentStates;
79    RetainPtr<AVCaptureSession> m_session;
80    RetainPtr<AVCaptureDevice> m_device;
81
82    bool m_isRunning;
83};
84
85} // namespace WebCore
86
87#endif // ENABLE(MEDIA_STREAM)
88
89#endif // AVMediaCaptureSource_h
90