1 // Copyright 2014 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 COMPONENTS_STORAGE_MONITOR_IMAGE_CAPTURE_DEVICE_H_ 6 #define COMPONENTS_STORAGE_MONITOR_IMAGE_CAPTURE_DEVICE_H_ 7 8 #import <Foundation/Foundation.h> 9 #import <ImageCaptureCore/ImageCaptureCore.h> 10 11 #include "base/files/file.h" 12 #include "base/files/file_path.h" 13 #include "base/mac/cocoa_protocols.h" 14 #include "base/mac/foundation_util.h" 15 #include "base/mac/scoped_nsobject.h" 16 #include "base/memory/ref_counted.h" 17 #include "base/memory/weak_ptr.h" 18 #include "base/strings/string_util.h" 19 #include "base/strings/sys_string_conversions.h" 20 #include "base/synchronization/lock.h" 21 22 namespace storage_monitor { 23 24 // Clients use this listener interface to get notifications about 25 // events happening as a particular ImageCapture device is interacted with. 26 // Clients drive the interaction through the ImageCaptureDeviceManager 27 // and the ImageCaptureDevice classes, and get notifications of 28 // events through this interface. 29 class ImageCaptureDeviceListener { 30 public: 31 virtual ~ImageCaptureDeviceListener() {} 32 33 // Get a notification that a particular item has been found on the device. 34 // These calls will come automatically after a new device is initialized. 35 // Names are in relative path form, so subdirectories and files in them will 36 // be passed as "dir/subdir/filename". These same relative filenames should 37 // be used as keys to download files. 38 virtual void ItemAdded(const std::string& name, 39 const base::File::Info& info) = 0; 40 41 // Called when there are no more items to retrieve. 42 virtual void NoMoreItems() = 0; 43 44 // Called upon completion of a file download request. 45 // Note: in NOT_FOUND error case, may be called inline with the download 46 // request. 47 virtual void DownloadedFile(const std::string& name, 48 base::File::Error error) = 0; 49 50 // Called to let the client know the device is removed. The client should 51 // set the ImageCaptureDevice listener to null upon receiving this call. 52 virtual void DeviceRemoved() = 0; 53 }; 54 55 } // namespace storage_monitor 56 57 // Interface to a camera device found by ImageCaptureCore. This class manages a 58 // session to the camera and provides the backing interactions to present the 59 // media files on it to the filesystem delegate. FilePaths will be artificial, 60 // like "/$device_id/" + name. 61 // Note that all interactions with this class must happen on the UI thread. 62 @interface ImageCaptureDevice 63 : NSObject<ICCameraDeviceDelegate, ICCameraDeviceDownloadDelegate> { 64 @private 65 base::scoped_nsobject<ICCameraDevice> camera_; 66 base::WeakPtr<storage_monitor::ImageCaptureDeviceListener> listener_; 67 bool closing_; 68 } 69 70 - (id)initWithCameraDevice:(ICCameraDevice*)cameraDevice; 71 - (void)setListener: 72 (base::WeakPtr<storage_monitor::ImageCaptureDeviceListener>)listener; 73 - (void)open; 74 - (void)close; 75 76 - (void)eject; 77 78 // Download the given file |name| to the provided |local_path|. Completion 79 // notice will be sent to the listener's DownloadedFile method. The name 80 // should be of the same form as those sent to the listener's ItemAdded method. 81 - (void)downloadFile:(const std::string&)name 82 localPath:(const base::FilePath&)localPath; 83 84 @end 85 86 #endif // COMPONENTS_STORAGE_MONITOR_IMAGE_CAPTURE_DEVICE_H_ 87
