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      1 /*
      2  * libjingle
      3  * Copyright 2004--2010, Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28 #include "talk/session/phone/devicemanager.h"
     29 
     30 #import <QTKit/QTKit.h>
     31 
     32 #include "talk/base/logging.h"
     33 
     34 @interface DeviceWatcherImpl : NSObject {
     35 @private
     36   cricket::DeviceManager* manager_;
     37 }
     38 - (id)init:(cricket::DeviceManager*) dm;
     39 - (void)onDevicesChanged:(NSNotification *)notification;
     40 @end
     41 
     42 @implementation DeviceWatcherImpl
     43 - (id)init:(cricket::DeviceManager*) dm {
     44   if ((self = [super init])) {
     45     manager_ = dm;
     46     [[NSNotificationCenter defaultCenter] addObserver:self
     47         selector:@selector(onDevicesChanged:)
     48         name:QTCaptureDeviceWasConnectedNotification
     49         object:nil];
     50     [[NSNotificationCenter defaultCenter] addObserver:self
     51         selector:@selector(onDevicesChanged:)
     52         name:QTCaptureDeviceWasDisconnectedNotification
     53         object:nil];
     54   }
     55   return self;
     56 }
     57 - (void)dealloc {
     58   [[NSNotificationCenter defaultCenter] removeObserver:self];
     59   [super dealloc];
     60 }
     61 - (void)onDevicesChanged:(NSNotification *)notification {
     62   manager_->OnDevicesChange();
     63 }
     64 @end
     65 
     66 namespace cricket {
     67 
     68 void* CreateDeviceWatcherCallback(DeviceManager* dm) {
     69   return [[DeviceWatcherImpl alloc] init:dm];
     70 }
     71 void ReleaseDeviceWatcherCallback(void* watcher) {
     72   DeviceWatcherImpl* watcher_impl = static_cast<DeviceWatcherImpl*>(watcher);
     73   [watcher_impl release];
     74 }
     75 
     76 bool GetQTKitVideoDevices(std::vector<Device>* devices) {
     77   NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
     78 
     79   NSArray* qt_capture_devices =
     80       [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo];
     81   NSUInteger count = [qt_capture_devices count];
     82   LOG(LS_INFO) << count << " capture device(s) found:";
     83   for (NSUInteger i = 0; i < count; ++i) {
     84     QTCaptureDevice* qt_capture_device = [qt_capture_devices objectAtIndex:i];
     85 
     86     static const NSString* kFormat = @"localizedDisplayName: \"%@\", "
     87         "modelUniqueID: \"%@\", uniqueID \"%@\", isConnected: %d, isOpen: %d, "
     88         "isInUseByAnotherApplication: %d";
     89     NSString* info = [NSString stringWithFormat:kFormat,
     90         [qt_capture_device localizedDisplayName],
     91         [qt_capture_device modelUniqueID],
     92         [qt_capture_device uniqueID],
     93         [qt_capture_device isConnected],
     94         [qt_capture_device isOpen],
     95         [qt_capture_device isInUseByAnotherApplication]];
     96     LOG(LS_INFO) << [info cStringUsingEncoding:NSUTF8StringEncoding];
     97 
     98     std::string name([[qt_capture_device localizedDisplayName]
     99                          cStringUsingEncoding:NSUTF8StringEncoding]);
    100     devices->push_back(Device(name,
    101        [[qt_capture_device uniqueID]
    102            cStringUsingEncoding:NSUTF8StringEncoding]));
    103   }
    104 
    105   [pool drain];
    106   return true;
    107 }
    108 
    109 }  // namespace cricket
    110