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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 #ifndef CHROME_BROWSER_SYSTEM_MONITOR_IMAGE_CAPTURE_DEVICE_H_ | |
6 #define CHROME_BROWSER_SYSTEM_MONITOR_IMAGE_CAPTURE_DEVICE_H_ | |
7 | |
8 #import <Foundation/Foundation.h> | |
9 #import <ImageCaptureCore/ImageCaptureCore.h> | |
10 | |
11 #include "base/file_path.h" | |
12 #include "base/mac/cocoa_protocols.h" | |
13 #include "base/mac/foundation_util.h" | |
14 #include "base/memory/ref_counted.h" | |
15 #include "base/memory/scoped_nsobject.h" | |
16 #include "base/memory/weak_ptr.h" | |
17 #include "base/platform_file.h" | |
18 #include "base/string_util.h" | |
19 #include "base/synchronization/lock.h" | |
20 #include "base/sys_string_conversions.h" | |
21 | |
22 // Clients use this listener interface to get notifications about | |
23 // events happening as a particular ImageCapture device is interacted with. | |
24 // Clients drive the interaction through the ImageCaptureDeviceManager | |
25 // and the ImageCaptureDevice classes, and get notifications of | |
26 // events through this interface. | |
27 class ImageCaptureDeviceListener { | |
28 public: | |
29 virtual ~ImageCaptureDeviceListener() {} | |
30 | |
31 // Get a notification that a particular item has been found on the device. | |
32 // These calls will come automatically after a new device is initialized. | |
33 virtual void ItemAdded(const std::string& name, | |
34 const base::PlatformFileInfo& info) = 0; | |
35 | |
36 // Called when there are no more items to retrieve. | |
37 virtual void NoMoreItems() = 0; | |
38 | |
39 // Called upon completion of a file download request. The |path| is the | |
40 // requested download file. Note: in NOT_FOUND error case, can be called | |
41 // inline with the download request. | |
42 virtual void DownloadedFile(const std::string& name, | |
43 base::PlatformFileError error) = 0; | |
44 | |
45 // Called to let the client know the device is removed. The client should | |
46 // set the ImageCaptureDevice listener to null upon receiving this call. | |
47 virtual void DeviceRemoved() = 0; | |
48 }; | |
49 | |
50 // Interface to a camera device found by ImageCaptureCore. This class manages a | |
51 // session to the camera and provides the backing interactions to present the | |
52 // media files on it to the filesystem delegate. FilePaths will be artificial, | |
53 // like "/$device_id/" + name. | |
54 // Note that all interactions with this class must happen on the UI thread. | |
55 @interface ImageCaptureDevice | |
56 : NSObject<ICCameraDeviceDelegate, ICCameraDeviceDownloadDelegate> { | |
57 @private | |
58 scoped_nsobject<ICCameraDevice> camera_; | |
59 base::WeakPtr<ImageCaptureDeviceListener> listener_; | |
60 } | |
61 | |
62 - (id)initWithCameraDevice:(ICCameraDevice*)cameraDevice; | |
63 - (void)setListener:(base::WeakPtr<ImageCaptureDeviceListener>)listener; | |
64 - (void)open; | |
65 - (void)close; | |
66 | |
67 // Download the given |file| to the provided |local_path|. Completion notice | |
68 // will be sent to the listener's DownloadedFile method. | |
69 - (void)downloadFile:(const std::string&)name | |
70 localPath:(const FilePath&)localPath; | |
71 | |
72 @end | |
73 | |
74 #endif // CHROME_BROWSER_SYSTEM_MONITOR_IMAGE_CAPTURE_DEVICE_H_ | |
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