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1/*
2 * libjingle
3 * Copyright 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// support GCC compiler
29#ifndef __has_feature
30#define __has_feature(x) 0
31#endif
32
33#include "talk/media/devices/devicemanager.h"
34
35#import <assert.h>
36#ifdef __MAC_OS_X_VERSION_MAX_ALLOWED
37#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
38  #import <AVFoundation/AVFoundation.h>
39#endif
40#endif
41#import <QTKit/QTKit.h>
42
43#include "webrtc/base/logging.h"
44
45@interface DeviceWatcherImpl : NSObject {
46 @private
47  cricket::DeviceManagerInterface* manager_;
48}
49- (id)init:(cricket::DeviceManagerInterface*)manager;
50- (void)onDevicesChanged:(NSNotification*)notification;
51@end
52
53@implementation DeviceWatcherImpl
54- (id)init:(cricket::DeviceManagerInterface*)manager {
55  if ((self = [super init])) {
56    assert(manager != NULL);
57    manager_ = manager;
58    [[NSNotificationCenter defaultCenter]
59        addObserver:self
60           selector:@selector(onDevicesChanged:)
61               name:QTCaptureDeviceWasConnectedNotification
62             object:nil];
63    [[NSNotificationCenter defaultCenter]
64        addObserver:self
65           selector:@selector(onDevicesChanged:)
66               name:QTCaptureDeviceWasDisconnectedNotification
67             object:nil];
68  }
69  return self;
70}
71
72- (void)dealloc {
73  [[NSNotificationCenter defaultCenter] removeObserver:self];
74#if !__has_feature(objc_arc)
75  [super dealloc];
76#endif
77}
78- (void)onDevicesChanged:(NSNotification*)notification {
79  manager_->SignalDevicesChange();
80}
81@end
82
83namespace cricket {
84
85DeviceWatcherImpl* CreateDeviceWatcherCallback(
86    DeviceManagerInterface* manager) {
87  DeviceWatcherImpl* impl;
88#if !__has_feature(objc_arc)
89  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
90#else
91  @autoreleasepool
92#endif
93  { impl = [[DeviceWatcherImpl alloc] init:manager]; }
94#if !__has_feature(objc_arc)
95  [pool drain];
96#endif
97  return impl;
98}
99
100void ReleaseDeviceWatcherCallback(DeviceWatcherImpl* watcher) {
101#if !__has_feature(objc_arc)
102  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
103  [watcher release];
104  [pool drain];
105#endif
106}
107
108bool GetQTKitVideoDevices(std::vector<Device>* devices) {
109#if !__has_feature(objc_arc)
110  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
111#else
112  @autoreleasepool
113#endif
114  {
115    NSArray* qt_capture_devices =
116        [QTCaptureDevice inputDevicesWithMediaType:QTMediaTypeVideo];
117    NSUInteger count = [qt_capture_devices count];
118    LOG(LS_INFO) << count << " capture device(s) found:";
119    for (QTCaptureDevice* qt_capture_device in qt_capture_devices) {
120      static NSString* const kFormat = @"localizedDisplayName: \"%@\", "
121          @"modelUniqueID: \"%@\", uniqueID \"%@\", isConnected: %d, "
122          @"isOpen: %d, isInUseByAnotherApplication: %d";
123      NSString* info = [NSString
124          stringWithFormat:kFormat,
125                           [qt_capture_device localizedDisplayName],
126                           [qt_capture_device modelUniqueID],
127                           [qt_capture_device uniqueID],
128                           [qt_capture_device isConnected],
129                           [qt_capture_device isOpen],
130                           [qt_capture_device isInUseByAnotherApplication]];
131      LOG(LS_INFO) << [info UTF8String];
132
133      std::string name([[qt_capture_device localizedDisplayName] UTF8String]);
134      devices->push_back(
135          Device(name, [[qt_capture_device uniqueID] UTF8String]));
136    }
137  }
138#if !__has_feature(objc_arc)
139  [pool drain];
140#endif
141  return true;
142}
143
144bool GetAVFoundationVideoDevices(std::vector<Device>* devices) {
145#ifdef __MAC_OS_X_VERSION_MAX_ALLOWED
146#if __MAC_OS_X_VERSION_MAX_ALLOWED >=1070
147  if (![AVCaptureDevice class]) {
148    // Fallback to using QTKit if AVFoundation is not available
149    return GetQTKitVideoDevices(devices);
150  }
151#if !__has_feature(objc_arc)
152  NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
153#else
154  @autoreleasepool
155#endif
156  {
157    NSArray* capture_devices = [AVCaptureDevice devices];
158    LOG(LS_INFO) << [capture_devices count] << " capture device(s) found:";
159    for (AVCaptureDevice* capture_device in capture_devices) {
160      if ([capture_device hasMediaType:AVMediaTypeVideo] ||
161          [capture_device hasMediaType:AVMediaTypeMuxed]) {
162        static NSString* const kFormat = @"localizedName: \"%@\", "
163            @"modelID: \"%@\", uniqueID \"%@\", isConnected: %d, "
164            @"isInUseByAnotherApplication: %d";
165        NSString* info = [NSString
166            stringWithFormat:kFormat,
167                             [capture_device localizedName],
168                             [capture_device modelID],
169                             [capture_device uniqueID],
170                             [capture_device isConnected],
171                             [capture_device isInUseByAnotherApplication]];
172        LOG(LS_INFO) << [info UTF8String];
173
174        std::string name([[capture_device localizedName] UTF8String]);
175        devices->push_back(
176            Device(name, [[capture_device uniqueID] UTF8String]));
177      }
178    }
179  }
180#if !__has_feature(objc_arc)
181  [pool drain];
182#endif
183  return true;
184#else  // __MAC_OS_X_VERSION_MAX_ALLOWED >=1070
185  return GetQTKitVideoDevices(devices);
186#endif  // __MAC_OS_X_VERSION_MAX_ALLOWED >=1070
187#else  // __MAC_OS_X_VERSION_MAX_ALLOWED
188  return GetQTKitVideoDevices(devices);
189#endif  // __MAC_OS_X_VERSION_MAX_ALLOWED
190}
191
192}  // namespace cricket
193