Adding VideoCaptureDevice for Mac.

media/video/capture/mac/video_capture_device_mac_qtkit.h

+// Copyright (c) 2011 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.
+
+// VideoCaptureDeviceMacQTKit implements all QTKit related code for
+// communicating with a QTKit capture device.
+
+#ifndef MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_QTKIT_H_
+#define MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_QTKIT_H_
+
+#import <Foundation/Foundation.h>
+
+namespace media {
+  class VideoCaptureDeviceMac;
+}
+
+@class QTCaptureDeviceInput;
+@class QTCaptureSession;
+
+@interface VideoCaptureDeviceMacQTKit : NSObject {
+ @private
+  // Settings.
+  int frameRate_;
+  int frameWidth_;
+  int frameHeight_;
+
+  media::VideoCaptureDeviceMac *frameReceiver_;
+
+  // QTKit variables.
+  QTCaptureSession *captureSession_;
+  QTCaptureDeviceInput *captureDeviceInput_;
+}
+
+// Returns an array of QTCaptureDevices.
+// TODO(mflodman) Return arrays of friendly name and unique id instead.
++ (NSArray *)deviceNames;
+
+// Initializes the instance and registers the frame receiver.
+- (id)initWithFrameReceiver:(media::VideoCaptureDeviceMac *)frameReceiver;
+
+// Sets which capture device to use. Returns YES on sucess, NO otherwise.
+- (BOOL)setCaptureDevice:(NSString *)deviceId;
+
+// Configures the capture properties.
+- (BOOL)setCaptureHeight:(int)height width:(int)width frameRate:(int)frameRate;
+
+// Start video capturing. Returns YES on sucess, NO otherwise.
+- (BOOL)startCapture;
+
+// Stops video capturing.
+- (void)stopCapture;
+
+@end
+
+#endif  // MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_QTKIT_H_