16 bpp video stream capture, render and createImageBitmap(video) using (CPU) shared memory buffers

media/capture/video/video_capture_utils.h

Index: media/capture/video/video_capture_utils.h
diff --git a/media/capture/video/blob_utils.h b/media/capture/video/video_capture_utils.h
similarity index 62%
rename from media/capture/video/blob_utils.h
rename to media/capture/video/video_capture_utils.h
index edf534727d849a66cd0d8a6079e75ea51240b8ae..8c1a0a9d52f3de66ff9b9e3e71d6d87986453be3 100644
--- a/media/capture/video/blob_utils.h
+++ b/media/capture/video/video_capture_utils.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MEDIA_CAPTURE_VIDEO_BLOB_UTILS_H_
-#define MEDIA_CAPTURE_VIDEO_BLOB_UTILS_H_
+#ifndef MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_UTILS_H_
+#define MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_UTILS_H_
 
 #include "media/mojo/interfaces/image_capture.mojom.h"
 
@@ -18,6 +18,12 @@ mojom::BlobPtr Blobify(const uint8_t* buffer,
                        const uint32_t bytesused,
                        const VideoCaptureFormat& capture_format);
 
+// Helper method to check is stream format layout is 16 bit grayscale based on
+// format's fourcc. fourcc is reinterpretation of four character literal to
+// unsigned int.
+//
+bool IsY16FormatFourCc(unsigned fourcc);
+
 }  // namespace media
 
-#endif  // MEDIA_CAPTURE_VIDEO_BLOB_UTILS_H_
+#endif  // MEDIA_CAPTURE_VIDEO_VIDEO_CAPTURE_UTILS_H_