Adding error signalling from device to VideocaptureManager to relay up to MediaStream and WebKit.

content/common/media/media_stream_options.h

Index: content/common/media/media_stream_options.h
===================================================================
--- content/common/media/media_stream_options.h	(revision 0)
+++ content/common/media/media_stream_options.h	(revision 0)
@@ -0,0 +1,70 @@
+// 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.
+
+#ifndef CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
+#define CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_
+
+#include <string>
+#include <vector>
+
+namespace media_stream {
+
+// StreamOptions is a Chromium representation of WebKits
+// WebGenerateStreamOptionFlags. It describes the components in a request for a
+// new media stream.
+struct StreamOptions {
+  enum VideoOption {
+    kNoCamera = 0,
+    kFacingUser = 1,
+    kFacingEnvironment = 1 << 1,
+  };
+
+  typedef unsigned VideoOptions;
+
+  StreamOptions() : audio(false), video_options(kNoCamera) {}
+  StreamOptions(bool audio, VideoOptions options)
+      : audio(audio), video_options(options) {}
+
+  // True if the stream shall contain an audio input stream.
+  bool audio;
+
+  // Describes if a / which type of video capture device is requested.
+  VideoOptions video_options;
+};
+
+// Type of media stream.
+enum MediaStreamType {
+  kNoService = 0,
+  kAudioCapture,
+  kVideoCapture
+};
+
+// StreamDeviceInfo describes information about a device.
+struct StreamDeviceInfo {
+  StreamDeviceInfo();
+  StreamDeviceInfo(MediaStreamType service_param,
+                   const std::string& name_param,
+                   const std::string& device_param,
+                   bool opened);
+
+  enum { kNoId = -1 };
+
+  // Describes the capture type.
+  MediaStreamType stream_type;
+  // Friendly name of the device.
+  std::string name;
+  // Unique name of a device. Even if there are multiple devices with the same
+  // friendly name connected to the computer, this will be unique.
+  std::string device_id;
+  // Set to true if the device has been opened, false otherwise.
+  bool in_use;
+  // Id for this capture session. Unique for all sessions of the same type.
+  int session_id;
+};
+
+typedef std::vector<StreamDeviceInfo> StreamDeviceInfoArray;
+
+}  // namespace media_stream
+
+#endif  // CONTENT_COMMON_MEDIA_MEDIA_STREAM_OPTIONS_H_