90 lines
3.3 KiB
C
90 lines
3.3 KiB
C
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/*
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* libjingle
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* Copyright 2015 Google Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TALK_APP_WEBRTC_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
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#define TALK_APP_WEBRTC_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
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#include "webrtc/media/base/videocapturer.h"
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#include "webrtc/video_frame.h"
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#import <AVFoundation/AVFoundation.h>
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@class RTCAVFoundationVideoCapturerInternal;
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namespace rtc {
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class Thread;
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} // namespace rtc
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namespace webrtc {
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class AVFoundationVideoCapturer : public cricket::VideoCapturer,
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public rtc::MessageHandler {
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public:
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AVFoundationVideoCapturer();
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~AVFoundationVideoCapturer();
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cricket::CaptureState Start(const cricket::VideoFormat& format) override;
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void Stop() override;
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bool IsRunning() override;
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bool IsScreencast() const override {
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return false;
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}
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bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override {
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fourccs->push_back(cricket::FOURCC_NV12);
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return true;
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}
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// Returns the active capture session. Calls to the capture session should
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// occur on the RTCDispatcherTypeCaptureSession queue in RTCDispatcher.
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AVCaptureSession* GetCaptureSession();
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// Returns whether the rear-facing camera can be used.
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// e.g. It can't be used because it doesn't exist.
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bool CanUseBackCamera() const;
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// Switches the camera being used (either front or back).
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void SetUseBackCamera(bool useBackCamera);
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bool GetUseBackCamera() const;
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// Converts the sample buffer into a cricket::CapturedFrame and signals the
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// frame for capture.
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void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer);
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// Handles messages from posts.
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void OnMessage(rtc::Message *msg) override;
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private:
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void OnFrameMessage(CVImageBufferRef image_buffer, int64_t capture_time);
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RTCAVFoundationVideoCapturerInternal* _capturer;
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rtc::Thread* _startThread; // Set in Start(), unset in Stop().
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}; // AVFoundationVideoCapturer
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} // namespace webrtc
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#endif // TALK_APP_WEBRTC_OBJC_AVFOUNDATION_CAPTURER_H_
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