16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support.

content/browser/renderer_host/media/video_capture_manager.cc

Index: content/browser/renderer_host/media/video_capture_manager.cc
diff --git a/content/browser/renderer_host/media/video_capture_manager.cc b/content/browser/renderer_host/media/video_capture_manager.cc
index b4e9a5c6362f099852b6a5cf9d04f058bc7d3f01..ed39aca9f131f4c00d985e0418646d2e39be76ee 100644
--- a/content/browser/renderer_host/media/video_capture_manager.cc
+++ b/content/browser/renderer_host/media/video_capture_manager.cc
@@ -57,7 +57,11 @@ bool IsCaptureFormatSmaller(const media::VideoCaptureFormat& format1,
   DCHECK(format2.frame_size.GetCheckedArea().IsValid());
   if (format1.frame_size.GetCheckedArea().ValueOrDefault(0) ==
       format2.frame_size.GetCheckedArea().ValueOrDefault(0)) {
-    return format1.frame_rate > format2.frame_rate;
+    return format1.frame_rate > format2.frame_rate ||
+           // Prefer Y8 and Y16 capture format for the same frame rate.
+           (format1.frame_rate == format2.frame_rate &&
+            (format2.pixel_format != media::PIXEL_FORMAT_Y8 &&
+             format2.pixel_format != media::PIXEL_FORMAT_Y16));
   }
   return format1.frame_size.GetCheckedArea().ValueOrDefault(0) <
          format2.frame_size.GetCheckedArea().ValueOrDefault(0);
@@ -87,7 +91,12 @@ void ConsolidateCaptureFormats(media::VideoCaptureFormats* formats) {
   // anyhow: the actual pixel format is decided at the device level.
   for (media::VideoCaptureFormats::iterator it = formats->begin();
        it != formats->end(); ++it) {
-    it->pixel_format = media::PIXEL_FORMAT_I420;
+    // TODO(astojilj) Force I420 for all except Y8 and Y16 in all
+    // video_capture_device_factory_->GetDeviceSupportedFormats instead of
+    // doing it here?
+    if (it->pixel_format != media::PIXEL_FORMAT_Y8 &&
+        it->pixel_format != media::PIXEL_FORMAT_Y16)
+      it->pixel_format = media::PIXEL_FORMAT_I420;
   }
 }