Mac VideoCapture: Support for Blackmagic DeckLink device & capabilities enumeration, using SDK.

media/video/capture/mac/video_capture_device_decklink_mac.h

Index: media/video/capture/mac/video_capture_device_decklink_mac.h
diff --git a/media/video/capture/mac/video_capture_device_decklink_mac.h b/media/video/capture/mac/video_capture_device_decklink_mac.h
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+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Implementation of VideoCaptureDevice class for Blackmagic video capture
+// devices by using the DeckLink SDK.
+
+#ifndef MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_DECKLINK_MAC_H_
+#define MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_DECKLINK_MAC_H_
+
+#include "media/video/capture/video_capture_device.h"
+
+#import <Foundation/Foundation.h>
+
+namespace media {
+
+// Extension of VideoCaptureDevice to create and manipulate Blackmagic devices
+// via DeckLink SDK.
+class MEDIA_EXPORT VideoCaptureDeviceDeckLinkMac : public VideoCaptureDevice {
+ public:
+  // Gets the names of all DeckLink video capture devices connected to this
+  // computer, as enumerated by the DeckLink SDK.
+  static void EnumerateDevices(VideoCaptureDevice::Names* device_names);
+
+  // Gets the supported formats of a particular device attached to the system,
+  // identified by |device|. Formats are retrieved from the DeckLink SDK.
+  static void EnumerateDeviceCapabilities(
+      const VideoCaptureDevice::Name& device,
+      VideoCaptureFormats* supported_formats);
+
+  explicit VideoCaptureDeviceDeckLinkMac(const Name& device_name);
+  virtual ~VideoCaptureDeviceDeckLinkMac();
+
+  // VideoCaptureDevice implementation.
+  virtual void AllocateAndStart(
+      const VideoCaptureParams& params,
+      scoped_ptr<VideoCaptureDevice::Client> client) OVERRIDE;
+  virtual void StopAndDeAllocate() OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceDeckLinkMac);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_VIDEO_CAPTURE_VIDEO_CAPTURE_DEVICE_DECKLINK_MAC_H_