content/renderer/media/audio_device_factory.cc

   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 #include "content/renderer/media/audio_device_factory.h"
   6
   7 #include "base/logging.h"
   8 #include "content/renderer/media/audio_input_message_filter.h"
   9 #include "content/renderer/media/audio_message_filter.h"
  10 #include "media/audio/audio_input_device.h"
  11 #include "media/audio/audio_output_device.h"
  12 #include "url/origin.h"
  13
  14 namespace content {
  15
  16 // static
  17 AudioDeviceFactory* AudioDeviceFactory::factory_ = NULL;
  18
  19 // static
  20 scoped_refptr<media::AudioOutputDevice> AudioDeviceFactory::NewOutputDevice(
  21     int render_frame_id,
  22     int session_id,
  23     const std::string& device_id,
  24     const url::Origin& security_origin) {
  25   if (factory_) {
  26     media::AudioOutputDevice* const device = factory_->CreateOutputDevice(
  27         render_frame_id, session_id, device_id, security_origin);
  28     if (device)
  29       return device;
  30   }
  31
  32   AudioMessageFilter* const filter = AudioMessageFilter::Get();
  33   scoped_refptr<media::AudioOutputDevice> device = new media::AudioOutputDevice(
  34       filter->CreateAudioOutputIPC(render_frame_id), filter->io_task_runner(),
  35       session_id, device_id, security_origin);
  36   device->RequestDeviceAuthorization();
  37   return device;
  38 }
  39
  40 // static
  41 scoped_refptr<media::AudioInputDevice> AudioDeviceFactory::NewInputDevice(
  42     int render_frame_id) {
  43   if (factory_) {
  44     media::AudioInputDevice* const device =
  45         factory_->CreateInputDevice(render_frame_id);
  46     if (device)
  47       return device;
  48   }
  49
  50   AudioInputMessageFilter* const filter = AudioInputMessageFilter::Get();
  51   return new media::AudioInputDevice(
  52       filter->CreateAudioInputIPC(render_frame_id), filter->io_task_runner());
  53 }
  54
  55 AudioDeviceFactory::AudioDeviceFactory() {
  56   DCHECK(!factory_) << "Can't register two factories at once.";
  57   factory_ = this;
  58 }
  59
  60 AudioDeviceFactory::~AudioDeviceFactory() {
  61   factory_ = NULL;
  62 }
  63
  64 }  // namespace content