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

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 b29215829de817b3ecdd036c6e8faa072e7ff054..7478e7a837336748f7d5bcd865b74c323be26dcb 100644
--- a/media/capture/video/win/sink_input_pin_win.cc
+++ b/media/capture/video/win/sink_input_pin_win.cc
@@ -11,6 +11,7 @@
 #include <dshow.h>
 #include <stdint.h>
 
+#include "base/big_endian.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "media/base/timestamp_constants.h"
@@ -96,6 +97,21 @@ bool SinkInputPin::IsMediaTypeValid(const AM_MEDIA_TYPE* media_type) {
     return true;
   }
 
+  if (sub_type.Data1 == pvi->bmiHeader.biCompression) {
+    // TODO(astojilj) Define GUIDs and move this to common place as the code is
+    // replicated around.
+    uint32_t fourcc;
+    base::ReadBigEndian(reinterpret_cast<const char*>(&sub_type.Data1),
+                        &fourcc);
+    if (fourcc == 'Z16 ' || fourcc == 'INVZ') {
+      resulting_format_.pixel_format = PIXEL_FORMAT_Y16;
+      return true;
+    } else if (fourcc == 'Y8  ') {
+      resulting_format_.pixel_format = PIXEL_FORMAT_Y8;
+      return true;
+    }
+  }
+
 #ifndef NDEBUG
   WCHAR guid_str[128];
   StringFromGUID2(sub_type, guid_str, arraysize(guid_str));
@@ -123,8 +139,11 @@ 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 (requested_pixel_format_ == PIXEL_FORMAT_MJPEG ||
+      requested_pixel_format_ == PIXEL_FORMAT_Y8 ||
+      requested_pixel_format_ == PIXEL_FORMAT_Y16) {
     // If the requested pixel format is MJPEG, accept only MJPEG.
+    // If the requested pixel format is Y16 or Y8, accept only those.
     // This is ok since the capabilities of the capturer have been
     // enumerated and we know that it is supported.
     if (index != 0)