src/remoting/host/chromoting_host_context.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 "remoting/host/chromoting_host_context.h"
   6
   7 #include "content/public/browser/browser_thread.h"
   8 #include "remoting/base/auto_thread.h"
   9 #include "remoting/base/url_request_context_getter.h"
  10
  11 namespace remoting {
  12
  13 ChromotingHostContext::ChromotingHostContext(
  14     scoped_refptr<AutoThreadTaskRunner> ui_task_runner,
  15     scoped_refptr<AutoThreadTaskRunner> audio_task_runner,
  16     scoped_refptr<AutoThreadTaskRunner> file_task_runner,
  17     scoped_refptr<AutoThreadTaskRunner> input_task_runner,
  18     scoped_refptr<AutoThreadTaskRunner> network_task_runner,
  19     scoped_refptr<AutoThreadTaskRunner> video_capture_task_runner,
  20     scoped_refptr<AutoThreadTaskRunner> video_encode_task_runner,
  21     scoped_refptr<net::URLRequestContextGetter> url_request_context_getter)
  22     : ui_task_runner_(ui_task_runner),
  23       audio_task_runner_(audio_task_runner),
  24       file_task_runner_(file_task_runner),
  25       input_task_runner_(input_task_runner),
  26       network_task_runner_(network_task_runner),
  27       video_capture_task_runner_(video_capture_task_runner),
  28       video_encode_task_runner_(video_encode_task_runner),
  29       url_request_context_getter_(url_request_context_getter) {
  30 }
  31
  32 ChromotingHostContext::~ChromotingHostContext() {
  33 }
  34
  35 scoped_ptr<ChromotingHostContext> ChromotingHostContext::Copy() {
  36   return make_scoped_ptr(new ChromotingHostContext(
  37       ui_task_runner_, audio_task_runner_, file_task_runner_,
  38       input_task_runner_, network_task_runner_, video_capture_task_runner_,
  39       video_encode_task_runner_, url_request_context_getter_));
  40 }
  41
  42 scoped_refptr<AutoThreadTaskRunner>
  43 ChromotingHostContext::audio_task_runner() {
  44   return audio_task_runner_;
  45 }
  46
  47 scoped_refptr<AutoThreadTaskRunner>
  48 ChromotingHostContext::file_task_runner() {
  49   return file_task_runner_;
  50 }
  51
  52 scoped_refptr<AutoThreadTaskRunner>
  53 ChromotingHostContext::input_task_runner() {
  54   return input_task_runner_;
  55 }
  56
  57 scoped_refptr<AutoThreadTaskRunner>
  58 ChromotingHostContext::network_task_runner() {
  59   return network_task_runner_;
  60 }
  61
  62 scoped_refptr<AutoThreadTaskRunner>
  63 ChromotingHostContext::ui_task_runner() {
  64   return ui_task_runner_;
  65 }
  66
  67 scoped_refptr<AutoThreadTaskRunner>
  68 ChromotingHostContext::video_capture_task_runner() {
  69   return video_capture_task_runner_;
  70 }
  71
  72 scoped_refptr<AutoThreadTaskRunner>
  73 ChromotingHostContext::video_encode_task_runner() {
  74   return video_encode_task_runner_;
  75 }
  76
  77 scoped_refptr<net::URLRequestContextGetter>
  78 ChromotingHostContext::url_request_context_getter() {
  79   return url_request_context_getter_;
  80 }
  81
  82 scoped_ptr<ChromotingHostContext> ChromotingHostContext::Create(
  83     scoped_refptr<AutoThreadTaskRunner> ui_task_runner) {
  84 #if defined(OS_WIN)
  85   // On Windows the AudioCapturer requires COM, so we run a single-threaded
  86   // apartment, which requires a UI thread.
  87   scoped_refptr<AutoThreadTaskRunner> audio_task_runner =
  88       AutoThread::CreateWithLoopAndComInitTypes(
  89           "ChromotingAudioThread", ui_task_runner, base::MessageLoop::TYPE_UI,
  90           AutoThread::COM_INIT_STA);
  91 #else   // !defined(OS_WIN)
  92   scoped_refptr<AutoThreadTaskRunner> audio_task_runner =
  93       AutoThread::CreateWithType("ChromotingAudioThread", ui_task_runner,
  94                                  base::MessageLoop::TYPE_IO);
  95 #endif  // !defined(OS_WIN)
  96   scoped_refptr<AutoThreadTaskRunner> file_task_runner =
  97       AutoThread::CreateWithType("ChromotingFileThread", ui_task_runner,
  98                                  base::MessageLoop::TYPE_IO);
  99   scoped_refptr<AutoThreadTaskRunner> network_task_runner =
 100       AutoThread::CreateWithType("ChromotingNetworkThread", ui_task_runner,
 101                                  base::MessageLoop::TYPE_IO);
 102
 103   return make_scoped_ptr(new ChromotingHostContext(
 104       ui_task_runner,
 105       audio_task_runner,
 106       file_task_runner,
 107       AutoThread::CreateWithType("ChromotingInputThread", ui_task_runner,
 108                                  base::MessageLoop::TYPE_IO),
 109       network_task_runner,
 110       AutoThread::Create("ChromotingCaptureThread", ui_task_runner),
 111       AutoThread::Create("ChromotingEncodeThread", ui_task_runner),
 112       make_scoped_refptr(
 113           new URLRequestContextGetter(network_task_runner, file_task_runner))));
 114 }
 115
 116 #if defined(OS_CHROMEOS)
 117 namespace {
 118 // Retrieves the task_runner from the browser thread with |id|.
 119 scoped_refptr<AutoThreadTaskRunner> WrapBrowserThread(
 120     content::BrowserThread::ID id) {
 121   // AutoThreadTaskRunner is a TaskRunner with the special property that it will
 122   // continue to process tasks until no references remain, at least. The
 123   // QuitClosure we usually pass does the simple thing of stopping the
 124   // underlying TaskRunner.  Since we are re-using the ui_task_runner of the
 125   // browser thread, we cannot stop it explicitly.  Therefore, base::DoNothing
 126   // is passed in as the quit closure.
 127   // TODO(kelvinp): Fix this (See crbug.com/428187).
 128   return new AutoThreadTaskRunner(
 129       content::BrowserThread::GetMessageLoopProxyForThread(id).get(),
 130       base::Bind(&base::DoNothing));
 131 }
 132
 133 }  // namespace
 134
 135 // static
 136 scoped_ptr<ChromotingHostContext> ChromotingHostContext::CreateForChromeOS(
 137     scoped_refptr<net::URLRequestContextGetter> url_request_context_getter) {
 138   DCHECK(url_request_context_getter.get());
 139
 140   // Use BrowserThread::FILE as the joiner as it is the only browser-thread
 141   // that allows blocking I/O, which is required by thread joining.
 142   // TODO(kelvinp): Fix AutoThread so that it can be joinable on task runners
 143   // that disallow I/O (crbug.com/428466).
 144   scoped_refptr<AutoThreadTaskRunner> file_task_runner =
 145       WrapBrowserThread(content::BrowserThread::FILE);
 146
 147   scoped_refptr<AutoThreadTaskRunner> ui_task_runner =
 148       WrapBrowserThread(content::BrowserThread::UI);
 149
 150   return make_scoped_ptr(new ChromotingHostContext(
 151       ui_task_runner,
 152       AutoThread::CreateWithType("ChromotingAudioThread", file_task_runner,
 153                                  base::MessageLoop::TYPE_IO),
 154       file_task_runner,
 155       AutoThread::CreateWithType("ChromotingInputThread", file_task_runner,
 156                                  base::MessageLoop::TYPE_IO),
 157       WrapBrowserThread(content::BrowserThread::IO),  // network_task_runner
 158       ui_task_runner,  // video_capture_task_runner
 159       AutoThread::CreateWithType("ChromotingEncodeThread", file_task_runner,
 160                                  base::MessageLoop::TYPE_IO),
 161       url_request_context_getter));
 162 }
 163 #endif  // defined(OS_CHROMEOS)
 164
 165 }  // namespace remoting