Media Capture Depth Stream Extensions API: focal length and depth range.

content/renderer/media/media_stream_video_track.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/media_stream_video_track.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 276 matching lines @@
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   if (source_) {
     source_->RemoveTrack(this);
     source_ = NULL;
   }
   OnReadyStateChanged(blink::WebMediaStreamSource::ReadyStateEnded);
 }
 
 void MediaStreamVideoTrack::getSettings(
     blink::WebMediaStreamTrack::Settings& settings) {
   if (source_) {

[mcasas, 2017/01/05 01:09:32]

Not your fault but what about:

  // TODO(hta): Extract the real value.
  settings.deviceId = blink::WebString("video device ID");
  if (!source_)
    return;

  // The rest, including your new stuff.

[aleksandar.stojiljkovic, 2017/01/09 18:47:01]

Done.

     const media::VideoCaptureFormat* format = source_->GetCurrentFormat();
     if (format) {
       settings.frameRate = format->frame_rate;
       settings.width = format->frame_size.width();
       settings.height = format->frame_size.height();
     }
+    const MediaStreamDevice::CameraCalibration& calibration =
+        source_->device_info().device.camera_calibration;
+    if (calibration.valid) {
+      settings.depthNear = calibration.depth_near;
+      settings.depthFar = calibration.depth_far;
+      settings.focalLengthX = calibration.focal_length_x;
+      settings.focalLengthY = calibration.focal_length_y;
+    }
   }
   // TODO(hta): Extract the real value.
   settings.deviceId = blink::WebString("video device ID");
 }
 
 void MediaStreamVideoTrack::OnReadyStateChanged(
     blink::WebMediaStreamSource::ReadyState state) {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   for (auto* sink : sinks_)
     sink->OnReadyStateChanged(state);
 }
 
 }  // namespace content