Media Capture Depth Stream Extensions API: videoKind settings and constraint.

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"
 #include "base/macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 
 namespace content {
 
+const char kVideoKindColor[] = "color";
+const char kVideoKindDepth[] = "depth";
+
+blink::WebString GetVideoKindForFormat(

[Guido Urdaneta, 2017/02/10 15:36:17]

nit: I still would prefer the function to be in
media_stream_constraints_util_video_source.cc since this is more an utility than
a Track-specific function.
I particularly dislike the inclusion of media_stream_video_track.h in
media_stream_constraints_util_video_source.cc since the latter should not depend
on anything track related.

[aleksandar.stojiljkovic, 2017/02/10 16:29:23]

Done.

+    const media::VideoCaptureFormat& format) {
+  return (format.pixel_format == media::PIXEL_FORMAT_Y16)
+             ? blink::WebString::fromASCII(kVideoKindDepth)
+             : blink::WebString::fromASCII(kVideoKindColor);
+}
+
 namespace {
 void ResetCallback(std::unique_ptr<VideoCaptureDeliverFrameCB> callback) {
   // |callback| will be deleted when this exits.
 }
 
 // Empty method used for keeping a reference to the original media::VideoFrame.
 // The reference to |frame| is kept in the closure that calls this method.
 void ReleaseOriginalFrame(const scoped_refptr<media::VideoFrame>& frame) {
 }
 
@@ skipping 277 matching lines @@
   // TODO(hta): Extract the real value.
   settings.deviceId = blink::WebString("video device ID");
   if (!source_)
     return;
 
   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();
+    settings.videoKind = GetVideoKindForFormat(*format);
   }
   switch (source_->device_info().device.video_facing) {
     case media::MEDIA_VIDEO_FACING_NONE:
       settings.facingMode = blink::WebMediaStreamTrack::FacingMode::None;
       break;
     case media::MEDIA_VIDEO_FACING_USER:
       settings.facingMode = blink::WebMediaStreamTrack::FacingMode::User;
       break;
     case media::MEDIA_VIDEO_FACING_ENVIRONMENT:
       settings.facingMode = blink::WebMediaStreamTrack::FacingMode::Environment;
@@ skipping 13 matching lines @@
 }
 
 void MediaStreamVideoTrack::OnReadyStateChanged(
     blink::WebMediaStreamSource::ReadyState state) {
   DCHECK(main_render_thread_checker_.CalledOnValidThread());
   for (auto* sink : sinks_)
     sink->OnReadyStateChanged(state);
 }
 
 }  // namespace content