rhubarb-lip-sync/lib/webrtc-8d2248ff/webrtc/sdk/objc/Framework/Classes/avfoundationvideocapturer.h

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2016-06-21 20:13:05 +00:00
/*
* 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.
*/
#ifndef WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
#define WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
#import <AVFoundation/AVFoundation.h>
#include "webrtc/media/base/videocapturer.h"
#include "webrtc/video_frame.h"
@class RTCAVFoundationVideoCapturerInternal;
namespace rtc {
class Thread;
} // namespace rtc
namespace webrtc {
class AVFoundationVideoCapturer : public cricket::VideoCapturer,
public rtc::MessageHandler {
public:
AVFoundationVideoCapturer();
~AVFoundationVideoCapturer();
cricket::CaptureState Start(const cricket::VideoFormat& format) override;
void Stop() override;
bool IsRunning() override;
bool IsScreencast() const override {
return false;
}
bool GetPreferredFourccs(std::vector<uint32_t> *fourccs) override {
fourccs->push_back(cricket::FOURCC_NV12);
return true;
}
// Returns the active capture session. Calls to the capture session should
// occur on the RTCDispatcherTypeCaptureSession queue in RTCDispatcher.
AVCaptureSession* GetCaptureSession();
// Returns whether the rear-facing camera can be used.
// e.g. It can't be used because it doesn't exist.
bool CanUseBackCamera() const;
// Switches the camera being used (either front or back).
void SetUseBackCamera(bool useBackCamera);
bool GetUseBackCamera() const;
// Converts the sample buffer into a cricket::CapturedFrame and signals the
// frame for capture.
void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer);
// Handles messages from posts.
void OnMessage(rtc::Message *msg) override;
private:
void OnFrameMessage(CVImageBufferRef image_buffer, int64_t capture_time);
RTCAVFoundationVideoCapturerInternal *_capturer;
rtc::Thread *_startThread; // Set in Start(), unset in Stop().
}; // AVFoundationVideoCapturer
} // namespace webrtc
#endif // WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_