chromecast/browser/media/cast_browser_cdm_factory.cc

   1 // Copyright 2014 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 "chromecast/browser/media/cast_browser_cdm_factory.h"
   6
   7 #include "base/bind.h"
   8 #include "base/location.h"
   9 #include "base/single_thread_task_runner.h"
  10 #include "chromecast/media/base/media_message_loop.h"
  11 #include "chromecast/media/cdm/browser_cdm_cast.h"
  12 #include "media/base/bind_to_current_loop.h"
  13 #include "media/base/cdm_key_information.h"
  14
  15 namespace chromecast {
  16 namespace media {
  17
  18 scoped_ptr<::media::BrowserCdm> CastBrowserCdmFactory::CreateBrowserCdm(
  19     const std::string& key_system_name,
  20     bool use_hw_secure_codecs,
  21     const ::media::SessionMessageCB& session_message_cb,
  22     const ::media::SessionClosedCB& session_closed_cb,
  23     const ::media::LegacySessionErrorCB& legacy_session_error_cb,
  24     const ::media::SessionKeysChangeCB& session_keys_change_cb,
  25     const ::media::SessionExpirationUpdateCB& session_expiration_update_cb) {
  26   DCHECK(!use_hw_secure_codecs)
  27       << "Chromecast does not use |use_hw_secure_codecs|";
  28
  29   CastKeySystem key_system(GetKeySystemByName(key_system_name));
  30
  31   scoped_ptr<chromecast::media::BrowserCdmCast> browser_cdm;
  32   if (key_system == chromecast::media::KEY_SYSTEM_CLEAR_KEY) {
  33     // TODO(gunsch): handle ClearKey decryption. See crbug.com/441957
  34   } else {
  35     browser_cdm = CreatePlatformBrowserCdm(key_system);
  36   }
  37
  38   if (browser_cdm) {
  39     MediaMessageLoop::GetTaskRunner()->PostTask(
  40         FROM_HERE,
  41         base::Bind(&BrowserCdmCast::Initialize,
  42                    base::Unretained(browser_cdm.get()),
  43                    ::media::BindToCurrentLoop(session_message_cb),
  44                    ::media::BindToCurrentLoop(session_closed_cb),
  45                    ::media::BindToCurrentLoop(legacy_session_error_cb),
  46                    ::media::BindToCurrentLoop(session_keys_change_cb),
  47                    ::media::BindToCurrentLoop(session_expiration_update_cb)));
  48     return make_scoped_ptr(new BrowserCdmCastUi(
  49         browser_cdm.Pass(), MediaMessageLoop::GetTaskRunner()));
  50   }
  51
  52   LOG(INFO) << "No matching key system found.";
  53   return scoped_ptr< ::media::BrowserCdm>();
  54 }
  55
  56 }  // namespace media
  57 }  // namespace chromecast