Windows DS VideoCapture: HDYC pixel format uses graph builder Connect() iso ConnectDirect()

ConnectDirect [1] connect the source to our video processing
pipeline allowing for no adapters in between. The Decklink
capture card needs an AVI decompressor (possibly for
deinterlacing). Connect [2] API allows this block
to be instantiated if needed, so we use it for HDYC 
pixel formats.

Tested: Lenovo x1 carbon integrated webcam, Logitech C910
C920, Creative Senz3d, Decklink. They all work fine.

[1] http://msdn.microsoft.com/en-us/library/aa926082.aspx
[2] http://msdn.microsoft.com/en-us/library/windows/desktop/dd390088(v=vs.85).aspx

BUG=380939

Review URL: https://codereview.chromium.org/334783003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@279689 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 4 insertions, 0 deletions

diff --git a/media/video/capture/win/video_capture_device_win.cc b/media/video/capture/win/video_capture_device_win.cc
index 7dafb7d..e47c5cb 100644
--- a/media/video/capture/win/video_capture_device_win.cc
+++ b/media/video/capture/win/video_capture_device_win.cc
@@ -356,6 +356,10 @@ void VideoCaptureDeviceWin::AllocateAndStart(
     // Connect the MJPEG filter to the Capture filter.
     hr += graph_builder_->ConnectDirect(output_mjpg_pin_, input_sink_pin_,
                                         NULL);
+  } else if (media_type->subtype == kMediaSubTypeHDYC) {
+    // HDYC pixel format, used by the DeckLink capture card, needs an AVI
+    // decompressor filter after source, let |graph_builder_| add it.
+    hr = graph_builder_->Connect(output_capture_pin_, input_sink_pin_);
   } else {
     hr = graph_builder_->ConnectDirect(output_capture_pin_, input_sink_pin_,
                                        NULL);