components/cdm/renderer/widevine_key_systems.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 "components/cdm/renderer/widevine_key_systems.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/logging.h"
  11 #include "media/base/eme_constants.h"
  12
  13 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
  14
  15 #if defined(WIDEVINE_CDM_AVAILABLE)
  16
  17 using media::KeySystemInfo;
  18 using media::SupportedCodecs;
  19
  20 namespace cdm {
  21
  22 // Return |name|'s parent key system.
  23 static std::string GetDirectParentName(std::string name) {
  24   size_t last_period = name.find_last_of('.');
  25   DCHECK_GT(last_period, 0u);
  26   return name.substr(0u, last_period);
  27 }
  28
  29 void AddWidevineWithCodecs(
  30     WidevineCdmType widevine_cdm_type,
  31     SupportedCodecs supported_codecs,
  32 #if defined(OS_ANDROID)
  33     SupportedCodecs supported_secure_codecs,
  34 #endif  // defined(OS_ANDROID)
  35     media::EmeRobustness max_audio_robustness,
  36     media::EmeRobustness max_video_robustness,
  37     media::EmeSessionTypeSupport persistent_license_support,
  38     media::EmeSessionTypeSupport persistent_release_message_support,
  39     media::EmeFeatureSupport persistent_state_support,
  40     media::EmeFeatureSupport distinctive_identifier_support,
  41     std::vector<KeySystemInfo>* concrete_key_systems) {
  42   KeySystemInfo info;
  43   info.key_system = kWidevineKeySystem;
  44
  45   switch (widevine_cdm_type) {
  46     case WIDEVINE:
  47       // For standard Widevine, add parent name.
  48       info.parent_key_system = GetDirectParentName(kWidevineKeySystem);
  49       break;
  50 #if defined(OS_ANDROID)
  51     case WIDEVINE_HR_NON_COMPOSITING:
  52       info.key_system.append(".hrnoncompositing");
  53       break;
  54 #endif  // defined(OS_ANDROID)
  55     default:
  56       NOTREACHED();
  57   }
  58
  59   // TODO(xhwang): A container or an initDataType may be supported even though
  60   // there are no codecs supported in that container. Fix this when we support
  61   // initDataType.
  62   info.supported_codecs = supported_codecs;
  63 #if defined(OS_ANDROID)
  64   info.supported_secure_codecs = supported_secure_codecs;
  65 #endif  // defined(OS_ANDROID)
  66
  67   // Here we assume that support for a container imples support for the
  68   // associated initialization data type. KeySystems handles validating
  69   // |init_data_type| x |container| pairings.
  70   if (supported_codecs & media::EME_CODEC_WEBM_ALL)
  71     info.supported_init_data_types |= media::kInitDataTypeMaskWebM;
  72 #if defined(USE_PROPRIETARY_CODECS)
  73   if (supported_codecs & media::EME_CODEC_MP4_ALL)
  74     info.supported_init_data_types |= media::kInitDataTypeMaskCenc;
  75 #endif  // defined(USE_PROPRIETARY_CODECS)
  76
  77   info.max_audio_robustness = max_audio_robustness;
  78   info.max_video_robustness = max_video_robustness;
  79   info.persistent_license_support = persistent_license_support;
  80   info.persistent_release_message_support = persistent_release_message_support;
  81   info.persistent_state_support = persistent_state_support;
  82   info.distinctive_identifier_support = distinctive_identifier_support;
  83
  84 #if defined(ENABLE_PEPPER_CDMS)
  85   info.pepper_type = kWidevineCdmPluginMimeType;
  86 #endif  // defined(ENABLE_PEPPER_CDMS)
  87
  88   concrete_key_systems->push_back(info);
  89 }
  90
  91 }  // namespace cdm
  92
  93 #endif  // defined(WIDEVINE_CDM_AVAILABLE)