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+// Copyright (c) 2012 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.
+
+// Windows specific implementation of VideoCaptureDevice.
+// DirectShow is used for capturing. DirectShow provide its own threads
+// for capturing.
+
+#ifndef MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_
+#define MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_
+
+#include <list>
+
+#include "base/threading/non_thread_safe.h"
+#include "media/video/capture/video_capture_types.h"
+
+namespace media {
+
+struct VideoCaptureCapabilityWin : public VideoCaptureCapability {
+ explicit VideoCaptureCapabilityWin(int index) : stream_index(index) {}
+ int stream_index;
+};
+
+class CapabilityList : public base::NonThreadSafe {
+ public:
+ CapabilityList();
+ ~CapabilityList();
+
+ bool empty() const { return capabilities_.empty(); }
+
+ // Appends an entry to the list.
+ void Add(const VideoCaptureCapabilityWin& capability);
+
+ // Loops through the list of capabilities and returns an index of the best
+ // matching capability. The algorithm prioritizes height, width, frame rate
+ // and color format in that order.
+ const VideoCaptureCapabilityWin& GetBestMatchedCapability(
+ int requested_width, int requested_height,
+ int requested_frame_rate) const;
+
+ private:
+ typedef std::list<VideoCaptureCapabilityWin> Capabilities;
+ Capabilities capabilities_;
+
+ DISALLOW_COPY_AND_ASSIGN(CapabilityList);
+};
+
+} // namespace media
+
+#endif // MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_