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

media/capture/video/win/sink_input_pin_win.cc

Index: media/capture/video/win/sink_input_pin_win.cc
diff --git a/media/capture/video/win/sink_input_pin_win.cc b/media/capture/video/win/sink_input_pin_win.cc
index e55316201d0fa4b16272a523c25aa6c27bec7d46..046300d4339850c0dff304009ae7b50a8a9b5796 100644
--- a/media/capture/video/win/sink_input_pin_win.cc
+++ b/media/capture/video/win/sink_input_pin_win.cc
@@ -14,6 +14,7 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "media/base/timestamp_constants.h"
+#include "media/capture/video/video_capture_utils.h"
 
 namespace media {
 
@@ -95,6 +96,12 @@ bool SinkInputPin::IsMediaTypeValid(const AM_MEDIA_TYPE* media_type) {
     resulting_format_.pixel_format = PIXEL_FORMAT_RGB32;
     return true;
   }
+  if (sub_type.Data1 == pvi->bmiHeader.biCompression) {
+    if (IsY16FormatFourCc(sub_type.Data1)) {
+      resulting_format_.pixel_format = PIXEL_FORMAT_Y16;
+      return true;
+    }
+  }
 
 #ifndef NDEBUG
   WCHAR guid_str[128];
@@ -123,8 +130,9 @@ bool SinkInputPin::GetValidMediaType(int index, AM_MEDIA_TYPE* media_type) {
   media_type->formattype = FORMAT_VideoInfo;
   media_type->bTemporalCompression = FALSE;
 
-  if (requested_pixel_format_ == PIXEL_FORMAT_MJPEG) {
-    // If the requested pixel format is MJPEG, accept only MJPEG.
+  if (requested_pixel_format_ == PIXEL_FORMAT_MJPEG ||
+      requested_pixel_format_ == PIXEL_FORMAT_Y16) {
+    // If the requested pixel format is MJPEG or Y16, don't accept other.
     // This is ok since the capabilities of the capturer have been
     // enumerated and we know that it is supported.
     if (index != 0)