media/capture/video/win/capability_list_win.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // Windows specific implementation of VideoCaptureDevice.
   6 // DirectShow is used for capturing. DirectShow provide its own threads
   7 // for capturing.
   8
   9 #ifndef MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_
  10 #define MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_
  11
  12 #include <list>
  13 #include <windows.h>
  14
  15 #include "media/base/video_capture_types.h"
  16
  17 namespace media {
  18
  19 struct CapabilityWin {
  20   CapabilityWin(int index, const VideoCaptureFormat& format)
  21       : stream_index(index), supported_format(format), info_header() {}
  22
  23   // Used by VideoCaptureDeviceWin.
  24   CapabilityWin(int index,
  25                 const VideoCaptureFormat& format,
  26                 const BITMAPINFOHEADER& info_header)
  27       : stream_index(index),
  28         supported_format(format),
  29         info_header(info_header) {}
  30
  31   const int stream_index;
  32   const VideoCaptureFormat supported_format;
  33
  34   // |info_header| is only valid if DirectShow is used.
  35   const BITMAPINFOHEADER info_header;
  36 };
  37
  38 typedef std::list<CapabilityWin> CapabilityList;
  39
  40 const CapabilityWin& GetBestMatchedCapability(
  41     const VideoCaptureFormat& requested,
  42     const CapabilityList& capabilities);
  43
  44 }  // namespace media
  45
  46 #endif  // MEDIA_VIDEO_CAPTURE_WIN_CAPABILITY_LIST_WIN_H_