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bb547203bf
In order to eliminate the WebRTC Subtree mirror in Chromium, WebRTC is moving the content of the src/webrtc directory up to the src/ directory. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true TBR=tommi@webrtc.org Bug: chromium:611808 Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38 Reviewed-on: https://webrtc-review.googlesource.com/1560 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Henrik Kjellander <kjellander@webrtc.org> Cr-Commit-Position: refs/heads/master@{#19845}
51 lines
2.1 KiB
Text
51 lines
2.1 KiB
Text
/*
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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 "AVCaptureSession+DevicePosition.h"
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BOOL CFStringContainsString(CFStringRef theString, CFStringRef stringToFind) {
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return CFStringFindWithOptions(theString,
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stringToFind,
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CFRangeMake(0, CFStringGetLength(theString)),
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kCFCompareCaseInsensitive,
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nil);
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}
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@implementation AVCaptureSession (DevicePosition)
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+ (AVCaptureDevicePosition)devicePositionForSampleBuffer:(CMSampleBufferRef)sampleBuffer {
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// Check the image's EXIF for the camera the image came from.
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AVCaptureDevicePosition cameraPosition = AVCaptureDevicePositionUnspecified;
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CFDictionaryRef attachments = CMCopyDictionaryOfAttachments(
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kCFAllocatorDefault, sampleBuffer, kCMAttachmentMode_ShouldPropagate);
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if (attachments) {
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int size = CFDictionaryGetCount(attachments);
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if (size > 0) {
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CFDictionaryRef cfExifDictVal = nil;
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if (CFDictionaryGetValueIfPresent(
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attachments, (const void *)CFSTR("{Exif}"), (const void **)&cfExifDictVal)) {
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CFStringRef cfLensModelStrVal;
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if (CFDictionaryGetValueIfPresent(cfExifDictVal,
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(const void *)CFSTR("LensModel"),
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(const void **)&cfLensModelStrVal)) {
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if (CFStringContainsString(cfLensModelStrVal, CFSTR("front"))) {
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cameraPosition = AVCaptureDevicePositionFront;
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} else if (CFStringContainsString(cfLensModelStrVal, CFSTR("back"))) {
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cameraPosition = AVCaptureDevicePositionBack;
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}
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}
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}
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}
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CFRelease(attachments);
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}
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return cameraPosition;
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}
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@end
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