chromecast/renderer/key_systems_cast.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/renderer/key_systems_cast.h"
   6
   7 #include <string>
   8
   9 #include "base/command_line.h"
  10 #include "base/logging.h"
  11 #include "build/build_config.h"
  12 #include "chromecast/media/base/key_systems_common.h"
  13 #include "components/cdm/renderer/widevine_key_systems.h"
  14 #include "media/base/eme_constants.h"
  15
  16 #include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR.
  17
  18 using ::media::EmeFeatureSupport;
  19 using ::media::EmeRobustness;
  20 using ::media::EmeSessionTypeSupport;
  21
  22 namespace chromecast {
  23 namespace shell {
  24
  25 void AddKeySystemWithCodecs(
  26     const std::string& key_system_name,
  27     std::vector<::media::KeySystemInfo>* key_systems_info) {
  28   ::media::KeySystemInfo info;
  29   info.key_system = key_system_name;
  30   info.supported_init_data_types = ::media::kInitDataTypeMaskCenc;
  31   info.supported_codecs =
  32       ::media::EME_CODEC_MP4_AAC | ::media::EME_CODEC_MP4_AVC1;
  33   info.max_audio_robustness = ::media::EmeRobustness::EMPTY;
  34   info.max_video_robustness = ::media::EmeRobustness::EMPTY;
  35 #if defined(OS_ANDROID)
  36   info.persistent_license_support =
  37       ::media::EmeSessionTypeSupport::NOT_SUPPORTED;
  38 #else
  39   info.persistent_license_support =
  40       ::media::EmeSessionTypeSupport::SUPPORTED;
  41 #endif
  42   info.persistent_release_message_support =
  43       ::media::EmeSessionTypeSupport::NOT_SUPPORTED;
  44   info.persistent_state_support = ::media::EmeFeatureSupport::ALWAYS_ENABLED;
  45   info.distinctive_identifier_support =
  46       ::media::EmeFeatureSupport::ALWAYS_ENABLED;
  47   key_systems_info->push_back(info);
  48 }
  49
  50 void AddChromecastKeySystems(
  51     std::vector<::media::KeySystemInfo>* key_systems_info) {
  52 #if defined(WIDEVINE_CDM_AVAILABLE)
  53   ::media::SupportedCodecs codecs =
  54       ::media::EME_CODEC_MP4_AAC | ::media::EME_CODEC_MP4_AVC1;
  55   AddWidevineWithCodecs(
  56       cdm::WIDEVINE,
  57       codecs,                                // Regular codecs.
  58 #if defined(OS_ANDROID)
  59       codecs,                                // Hardware-secure codecs.
  60 #endif  // defined(OS_ANDROID)
  61       EmeRobustness::HW_SECURE_ALL,          // Max audio robustness.
  62       EmeRobustness::HW_SECURE_ALL,          // Max video robustness.
  63       EmeSessionTypeSupport::NOT_SUPPORTED,  // persistent-license.
  64       EmeSessionTypeSupport::NOT_SUPPORTED,  // persistent-release-message.
  65       // Note: On Chromecast, all CDMs may have persistent state.
  66       EmeFeatureSupport::ALWAYS_ENABLED,     // Persistent state.
  67       EmeFeatureSupport::ALWAYS_ENABLED,     // Distinctive identifier.
  68       key_systems_info);
  69 #endif  // defined(WIDEVINE_CDM_AVAILABLE)
  70
  71 #if defined(PLAYREADY_CDM_AVAILABLE)
  72   AddKeySystemWithCodecs(media::kChromecastPlayreadyKeySystem,
  73                          key_systems_info);
  74 #endif  // defined(PLAYREADY_CDM_AVAILABLE)
  75 }
  76
  77 }  // namespace shell
  78 }  // namespace chromecast