webrtc_m130/talk/app/webrtc/objc/public/RTCAVFoundationVideoSource.h
hjon a1cf366ea9 Handle iOS devices with no rear-facing camera
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}
2016-03-15 03:55:25 +00:00

52 lines
2.4 KiB
Objective-C

/*
* libjingle
* Copyright 2015 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "RTCVideoSource.h"
@class AVCaptureSession;
@class RTCMediaConstraints;
@class RTCPeerConnectionFactory;
// RTCAVFoundationVideoSource is a video source that uses
// webrtc::AVFoundationVideoCapturer. We do not currently provide a wrapper for
// that capturer because cricket::VideoCapturer is not ref counted and we cannot
// guarantee its lifetime. Instead, we expose its properties through the ref
// counted video source interface.
@interface RTCAVFoundationVideoSource : RTCVideoSource
- (instancetype)initWithFactory:(RTCPeerConnectionFactory*)factory
constraints:(RTCMediaConstraints*)constraints;
// Returns whether rear-facing camera is available for use.
@property(nonatomic, readonly) BOOL canUseBackCamera;
// Switches the camera being used (either front or back).
@property(nonatomic, assign) BOOL useBackCamera;
// Returns the active capture session.
@property(nonatomic, readonly) AVCaptureSession* captureSession;
@end