a1cf366ea9
Devices exist (specifically the 16GB 5th generation iPod Touch) that do not have a rear-facing camera. This CL: - Adjusts RTCAVFoundationVideoCapturerInternal so initialization doesn't fail because a rear-facing camera doesn't exist, but still logs a warning - Provides a check for whether or not a rear-facing camera can be used (useful for toggling UI elements) - Turns an attempt to switch to the rear-facing camera into a no-op with a warning. BUG= Review URL: https://codereview.webrtc.org/1416303003 Cr-Commit-Position: refs/heads/master@{#11992}
72 lines
2.1 KiB
Objective-C
72 lines
2.1 KiB
Objective-C
/*
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* Copyright 2015 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_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
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#define WEBRTC_API_OBJC_AVFOUNDATION_VIDEO_CAPTURER_H_
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#include "webrtc/base/scoped_ptr.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 webrtc {
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class AVFoundationVideoCapturer : public cricket::VideoCapturer {
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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. */
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AVCaptureSession* GetCaptureSession();
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/**
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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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*/
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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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/**
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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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*/
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void CaptureSampleBuffer(CMSampleBufferRef sampleBuffer);
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private:
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/**
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* Used to signal frame capture on the thread that capturer was started on.
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*/
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void SignalFrameCapturedOnStartThread(const cricket::CapturedFrame *frame);
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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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