tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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ARDExternalSampleCapturer.m (2071B)

      1 /*
      2 *  Copyright 2018 The WebRTC Project Authors. All rights reserved.
      3 *
      4 *  Use of this source code is governed by a BSD-style license
      5 *  that can be found in the LICENSE file in the root of the source
      6 *  tree. An additional intellectual property rights grant can be found
      7 *  in the file PATENTS.  All contributing project authors may
      8 *  be found in the AUTHORS file in the root of the source tree.
      9 */
     10 
     11 #import "ARDExternalSampleCapturer.h"
     12 
     13 #import "sdk/objc/api/video_frame_buffer/RTCNativeI420Buffer.h"
     14 #import "sdk/objc/api/video_frame_buffer/RTCNativeMutableI420Buffer.h"
     15 #import "sdk/objc/base/RTCI420Buffer.h"
     16 #import "sdk/objc/base/RTCMutableI420Buffer.h"
     17 #import "sdk/objc/base/RTCMutableYUVPlanarBuffer.h"
     18 #import "sdk/objc/base/RTCVideoFrameBuffer.h"
     19 #import "sdk/objc/base/RTCYUVPlanarBuffer.h"
     20 #import "sdk/objc/components/video_frame_buffer/RTCCVPixelBuffer.h"
     21 
     22 @implementation ARDExternalSampleCapturer
     23 
     24 - (instancetype)initWithDelegate:
     25    (__weak id<RTC_OBJC_TYPE(RTCVideoCapturerDelegate)>)delegate {
     26  return [super initWithDelegate:delegate];
     27 }
     28 
     29 #pragma mark - ARDExternalSampleDelegate
     30 
     31 - (void)didCaptureSampleBuffer:(CMSampleBufferRef)sampleBuffer {
     32  if (CMSampleBufferGetNumSamples(sampleBuffer) != 1 ||
     33      !CMSampleBufferIsValid(sampleBuffer) ||
     34      !CMSampleBufferDataIsReady(sampleBuffer)) {
     35    return;
     36  }
     37 
     38  CVPixelBufferRef pixelBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
     39  if (pixelBuffer == nil) {
     40    return;
     41  }
     42 
     43  RTC_OBJC_TYPE(RTCCVPixelBuffer) *rtcPixelBuffer =
     44      [[RTC_OBJC_TYPE(RTCCVPixelBuffer) alloc] initWithPixelBuffer:pixelBuffer];
     45  int64_t timeStampNs =
     46      CMTimeGetSeconds(CMSampleBufferGetPresentationTimeStamp(sampleBuffer)) *
     47      NSEC_PER_SEC;
     48  RTC_OBJC_TYPE(RTCVideoFrame) *videoFrame =
     49      [[RTC_OBJC_TYPE(RTCVideoFrame) alloc] initWithBuffer:rtcPixelBuffer
     50                                                  rotation:RTCVideoRotation_0
     51                                               timeStampNs:timeStampNs];
     52  [self.delegate capturer:self didCaptureVideoFrame:videoFrame];
     53 }
     54 
     55 @end