src/third_party/libjingle/source/talk/media/devices/macdevicemanager.cc

   1 /*
   2  * libjingle
   3  * Copyright 2004 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/media/devices/macdevicemanager.h"
  29
  30 #include <CoreAudio/CoreAudio.h>
  31 #include <QuickTime/QuickTime.h>
  32
  33 #include "talk/base/logging.h"
  34 #include "talk/base/stringutils.h"
  35 #include "talk/base/thread.h"
  36 #include "talk/media/base/mediacommon.h"
  37
  38 class DeviceWatcherImpl;
  39
  40 namespace cricket {
  41
  42 DeviceManagerInterface* DeviceManagerFactory::Create() {
  43   return new MacDeviceManager();
  44 }
  45
  46 class MacDeviceWatcher : public DeviceWatcher {
  47  public:
  48   explicit MacDeviceWatcher(DeviceManagerInterface* dm);
  49   virtual ~MacDeviceWatcher();
  50   virtual bool Start();
  51   virtual void Stop();
  52
  53  private:
  54   DeviceManagerInterface* manager_;
  55   DeviceWatcherImpl* impl_;
  56 };
  57
  58 static const char* kFilteredAudioDevicesName[] = {
  59     NULL,
  60 };
  61 // TODO(tommyw): Try to get hold of a copy of Final Cut to understand why we
  62 //               crash while scanning their components on OS X.
  63 static const char* const kFilteredVideoDevicesName[] =  {
  64     "DVCPRO HD",               // Final cut
  65     "Sonix SN9C201p",          // Crashes in OpenAComponent and CloseComponent
  66     NULL,
  67 };
  68 static const UInt32 kAudioDeviceNameLength = 64;
  69 // Obj-C functions defined in macdevicemanagermm.mm
  70 // TODO(ronghuawu): have a shared header for these function defines.
  71 extern DeviceWatcherImpl* CreateDeviceWatcherCallback(
  72     DeviceManagerInterface* dm);
  73 extern void ReleaseDeviceWatcherCallback(DeviceWatcherImpl* impl);
  74 extern bool GetQTKitVideoDevices(std::vector<Device>* out);
  75 static bool GetAudioDeviceIDs(bool inputs, std::vector<AudioDeviceID>* out);
  76 static bool GetAudioDeviceName(AudioDeviceID id, bool input, std::string* out);
  77
  78 MacDeviceManager::MacDeviceManager() {
  79   set_watcher(new MacDeviceWatcher(this));
  80 }
  81
  82 MacDeviceManager::~MacDeviceManager() {
  83 }
  84
  85 bool MacDeviceManager::GetVideoCaptureDevices(std::vector<Device>* devices) {
  86   devices->clear();
  87   if (!GetQTKitVideoDevices(devices)) {
  88     return false;
  89   }
  90   return FilterDevices(devices, kFilteredVideoDevicesName);
  91 }
  92
  93 bool MacDeviceManager::GetAudioDevices(bool input,
  94                                        std::vector<Device>* devs) {
  95   devs->clear();
  96   std::vector<AudioDeviceID> dev_ids;
  97   bool ret = GetAudioDeviceIDs(input, &dev_ids);
  98   if (!ret) {
  99     return false;
 100   }
 101   for (size_t i = 0; i < dev_ids.size(); ++i) {
 102     std::string name;
 103     if (GetAudioDeviceName(dev_ids[i], input, &name)) {
 104       devs->push_back(Device(name, dev_ids[i]));
 105     }
 106   }
 107   return FilterDevices(devs, kFilteredAudioDevicesName);
 108 }
 109
 110 static bool GetAudioDeviceIDs(bool input,
 111                               std::vector<AudioDeviceID>* out_dev_ids) {
 112   UInt32 propsize;
 113   OSErr err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
 114                                            &propsize, NULL);
 115   if (0 != err) {
 116     LOG(LS_ERROR) << "Couldn't get information about property, "
 117                   << "so no device list acquired.";
 118     return false;
 119   }
 120
 121   size_t num_devices = propsize / sizeof(AudioDeviceID);
 122   talk_base::scoped_ptr<AudioDeviceID[]> device_ids(
 123       new AudioDeviceID[num_devices]);
 124
 125   err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices,
 126                                  &propsize, device_ids.get());
 127   if (0 != err) {
 128     LOG(LS_ERROR) << "Failed to get device ids, "
 129                   << "so no device listing acquired.";
 130     return false;
 131   }
 132
 133   for (size_t i = 0; i < num_devices; ++i) {
 134     AudioDeviceID an_id = device_ids[i];
 135     // find out the number of channels for this direction
 136     // (input/output) on this device -
 137     // we'll ignore anything with no channels.
 138     err = AudioDeviceGetPropertyInfo(an_id, 0, input,
 139                                      kAudioDevicePropertyStreams,
 140                                      &propsize, NULL);
 141     if (0 == err) {
 142       unsigned num_channels = propsize / sizeof(AudioStreamID);
 143       if (0 < num_channels) {
 144         out_dev_ids->push_back(an_id);
 145       }
 146     } else {
 147       LOG(LS_ERROR) << "No property info for stream property for device id "
 148                     << an_id << "(is_input == " << input
 149                     << "), so not including it in the list.";
 150     }
 151   }
 152
 153   return true;
 154 }
 155
 156 static bool GetAudioDeviceName(AudioDeviceID id,
 157                                bool input,
 158                                std::string* out_name) {
 159   UInt32 nameLength = kAudioDeviceNameLength;
 160   char name[kAudioDeviceNameLength + 1];
 161   OSErr err = AudioDeviceGetProperty(id, 0, input,
 162                                      kAudioDevicePropertyDeviceName,
 163                                      &nameLength, name);
 164   if (0 != err) {
 165     LOG(LS_ERROR) << "No name acquired for device id " << id;
 166     return false;
 167   }
 168
 169   *out_name = name;
 170   return true;
 171 }
 172
 173 MacDeviceWatcher::MacDeviceWatcher(DeviceManagerInterface* manager)
 174     : DeviceWatcher(manager),
 175       manager_(manager),
 176       impl_(NULL) {
 177 }
 178
 179 MacDeviceWatcher::~MacDeviceWatcher() {
 180 }
 181
 182 bool MacDeviceWatcher::Start() {
 183   if (!impl_) {
 184     impl_ = CreateDeviceWatcherCallback(manager_);
 185   }
 186   return impl_ != NULL;
 187 }
 188
 189 void MacDeviceWatcher::Stop() {
 190   if (impl_) {
 191     ReleaseDeviceWatcherCallback(impl_);
 192     impl_ = NULL;
 193   }
 194 }
 195
 196 };  // namespace cricket