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https://github.com/mollyim/webrtc.git
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f824ef8062
When user touches switch camera it takes a while for camera to switch. So disabled switch camera button on touch and enabled it back when switch camera is done. It also gives visual feedback to user. Did same change for route change button as well. Route change operation is relatively fast but making this change make it robust in case the operation takes time. Also changed image color and background color highlight color for touch highlight. Bug: webrtc:11778 Change-Id: I037b830f7a02b49bf292b8838bd245db585dbd22 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/179041 Commit-Queue: Kári Helgason <kthelgason@webrtc.org> Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31910}
116 lines
3.5 KiB
Objective-C
116 lines
3.5 KiB
Objective-C
/*
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* Copyright 2017 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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#import "ARDCaptureController.h"
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#import <WebRTC/RTCLogging.h>
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#import "ARDSettingsModel.h"
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const Float64 kFramerateLimit = 30.0;
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@implementation ARDCaptureController {
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RTC_OBJC_TYPE(RTCCameraVideoCapturer) * _capturer;
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ARDSettingsModel *_settings;
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BOOL _usingFrontCamera;
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}
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- (instancetype)initWithCapturer:(RTC_OBJC_TYPE(RTCCameraVideoCapturer) *)capturer
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settings:(ARDSettingsModel *)settings {
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if (self = [super init]) {
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_capturer = capturer;
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_settings = settings;
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_usingFrontCamera = YES;
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}
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return self;
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}
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- (void)startCapture {
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[self startCapture:nil];
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}
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- (void)startCapture:(void (^)(NSError *))completion {
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AVCaptureDevicePosition position =
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_usingFrontCamera ? AVCaptureDevicePositionFront : AVCaptureDevicePositionBack;
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AVCaptureDevice *device = [self findDeviceForPosition:position];
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AVCaptureDeviceFormat *format = [self selectFormatForDevice:device];
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if (format == nil) {
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RTCLogError(@"No valid formats for device %@", device);
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NSAssert(NO, @"");
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return;
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}
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NSInteger fps = [self selectFpsForFormat:format];
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[_capturer startCaptureWithDevice:device format:format fps:fps completionHandler:completion];
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}
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- (void)stopCapture {
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[_capturer stopCapture];
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}
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- (void)switchCamera {
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_usingFrontCamera = !_usingFrontCamera;
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[self startCapture:nil];
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}
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- (void)switchCamera:(void (^)(NSError *))completion {
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_usingFrontCamera = !_usingFrontCamera;
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[self startCapture:completion];
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}
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#pragma mark - Private
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- (AVCaptureDevice *)findDeviceForPosition:(AVCaptureDevicePosition)position {
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NSArray<AVCaptureDevice *> *captureDevices =
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[RTC_OBJC_TYPE(RTCCameraVideoCapturer) captureDevices];
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for (AVCaptureDevice *device in captureDevices) {
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if (device.position == position) {
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return device;
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}
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}
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return captureDevices[0];
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}
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- (AVCaptureDeviceFormat *)selectFormatForDevice:(AVCaptureDevice *)device {
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NSArray<AVCaptureDeviceFormat *> *formats =
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[RTC_OBJC_TYPE(RTCCameraVideoCapturer) supportedFormatsForDevice:device];
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int targetWidth = [_settings currentVideoResolutionWidthFromStore];
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int targetHeight = [_settings currentVideoResolutionHeightFromStore];
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AVCaptureDeviceFormat *selectedFormat = nil;
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int currentDiff = INT_MAX;
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for (AVCaptureDeviceFormat *format in formats) {
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CMVideoDimensions dimension = CMVideoFormatDescriptionGetDimensions(format.formatDescription);
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FourCharCode pixelFormat = CMFormatDescriptionGetMediaSubType(format.formatDescription);
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int diff = abs(targetWidth - dimension.width) + abs(targetHeight - dimension.height);
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if (diff < currentDiff) {
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selectedFormat = format;
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currentDiff = diff;
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} else if (diff == currentDiff && pixelFormat == [_capturer preferredOutputPixelFormat]) {
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selectedFormat = format;
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}
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}
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return selectedFormat;
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}
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- (NSInteger)selectFpsForFormat:(AVCaptureDeviceFormat *)format {
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Float64 maxSupportedFramerate = 0;
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for (AVFrameRateRange *fpsRange in format.videoSupportedFrameRateRanges) {
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maxSupportedFramerate = fmax(maxSupportedFramerate, fpsRange.maxFrameRate);
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}
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return fmin(maxSupportedFramerate, kFramerateLimit);
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}
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@end
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