Move EME key system knowledge from content/ to chrome/.

content/renderer/media/crypto/key_systems_info.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/media/crypto/key_systems_info.h"
 
-#include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 
 #include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR.
 
 // The following must be after widevine_cdm_version.h.
 
-#if defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_MIN_GLIBC_VERSION)
-#include <gnu/libc-version.h>
-#include "base/version.h"
-#endif
-
 #if defined(DISABLE_WIDEVINE_CDM_CANPLAYTYPE)
 #include "base/command_line.h"
 #include "media/base/media_switches.h"
 #endif
 
 namespace content {
 
 static const char kClearKeyKeySystem[] = "webkit-org.w3.clearkey";
 
-static const char kAudioWebM[] = "audio/webm";
-static const char kVideoWebM[] = "video/webm";
-static const char kVorbis[] = "vorbis";
-static const char kVorbisVP8[] = "vorbis,vp8,vp8.0";
-
-static const char kAudioMp4[] = "audio/mp4";
-static const char kVideoMp4[] = "video/mp4";
-static const char kMp4a[] = "mp4a";
-static const char kAvc1[] = "avc1";
-static const char kMp4aAvc1[] = "mp4a,avc1";
-
-#if defined(WIDEVINE_CDM_AVAILABLE)
-enum SupportedCodecs {
-  WEBM_VP8_AND_VORBIS = 1 << 0,
-#if defined(USE_PROPRIETARY_CODECS)
-  MP4_AAC = 1 << 1,
-  MP4_AVC1 = 1 << 2,
-#endif  // defined(USE_PROPRIETARY_CODECS)
-};
-
-static void AddWidevineForTypes(
-    SupportedCodecs supported_codecs,
-    std::vector<KeySystemInfo>* concrete_key_systems) {
-  static const char kWidevineParentKeySystem[] = "com.widevine";
-#if defined(OS_ANDROID)
-  static const uint8 kWidevineUuid[16] = {
-      0xED, 0xEF, 0x8B, 0xA9, 0x79, 0xD6, 0x4A, 0xCE,
-      0xA3, 0xC8, 0x27, 0xDC, 0xD5, 0x1D, 0x21, 0xED };
-#endif
-
-#if defined(WIDEVINE_CDM_MIN_GLIBC_VERSION)
-  Version glibc_version(gnu_get_libc_version());
-  DCHECK(glibc_version.IsValid());
-  if (glibc_version.IsOlderThan(WIDEVINE_CDM_MIN_GLIBC_VERSION))
-    return;
-#endif  // defined(WIDEVINE_CDM_MIN_GLIBC_VERSION)
-
-  KeySystemInfo info(kWidevineKeySystem);
-
-  if (supported_codecs & WEBM_VP8_AND_VORBIS) {
-    info.supported_types.push_back(std::make_pair(kAudioWebM, kVorbis));
-    info.supported_types.push_back(std::make_pair(kVideoWebM, kVorbisVP8));
-  }
-
-#if defined(USE_PROPRIETARY_CODECS)
-  if (supported_codecs & MP4_AAC)
-    info.supported_types.push_back(std::make_pair(kAudioMp4, kMp4a));
-
-  if (supported_codecs & MP4_AVC1) {
-    const char* video_codecs = (supported_codecs & MP4_AAC) ? kMp4aAvc1 : kAvc1;
-    info.supported_types.push_back(std::make_pair(kVideoMp4, video_codecs));
-  }
-#endif  // defined(USE_PROPRIETARY_CODECS)
-
-  info.parent_key_system = kWidevineParentKeySystem;
-
-#if defined(ENABLE_PEPPER_CDMS)
-  info.pepper_type = kWidevineCdmPluginMimeType;
-#elif defined(OS_ANDROID)
-  info.uuid.assign(kWidevineUuid, kWidevineUuid + arraysize(kWidevineUuid));
-#endif  // defined(ENABLE_PEPPER_CDMS)
-
-  concrete_key_systems->push_back(info);
-}
-
-#if defined(ENABLE_PEPPER_CDMS)
-// Supported types are determined at compile time.
-static void AddPepperBasedWidevine(
-    std::vector<KeySystemInfo>* concrete_key_systems) {
-  SupportedCodecs supported_codecs = WEBM_VP8_AND_VORBIS;
-
-#if defined(USE_PROPRIETARY_CODECS)
-#if defined(WIDEVINE_CDM_AAC_SUPPORT_AVAILABLE)
-  supported_codecs = static_cast<SupportedCodecs>(supported_codecs | MP4_AAC);
-#endif
-#if defined(WIDEVINE_CDM_AVC1_SUPPORT_AVAILABLE)
-  supported_codecs = static_cast<SupportedCodecs>(supported_codecs | MP4_AVC1);
-#endif
-#endif  // defined(USE_PROPRIETARY_CODECS)
-
-  AddWidevineForTypes(supported_codecs, concrete_key_systems);
-}
-#elif defined(OS_ANDROID)
-static void AddAndroidWidevine(
-    std::vector<KeySystemInfo>* concrete_key_systems) {
-#if defined(USE_PROPRIETARY_CODECS)
-  SupportedCodecs supported_codecs =
-      static_cast<SupportedCodecs>(MP4_AAC | MP4_AVC1);
-  AddWidevineForTypes(supported_codecs, concrete_key_systems);
-#endif  // defined(USE_PROPRIETARY_CODECS)
-}
-#endif  // defined(ENABLE_PEPPER_CDMS)
-#endif  // defined(WIDEVINE_CDM_AVAILABLE)
-
-static void AddClearKey(std::vector<KeySystemInfo>* concrete_key_systems) {
-  KeySystemInfo info(kClearKeyKeySystem);
-
-  info.supported_types.push_back(std::make_pair(kAudioWebM, kVorbis));
-  info.supported_types.push_back(std::make_pair(kVideoWebM, kVorbisVP8));
-#if defined(USE_PROPRIETARY_CODECS)
-  info.supported_types.push_back(std::make_pair(kAudioMp4, kMp4a));
-  info.supported_types.push_back(std::make_pair(kVideoMp4, kMp4aAvc1));
-#endif  // defined(USE_PROPRIETARY_CODECS)
-
-  info.use_aes_decryptor = true;
-
-  concrete_key_systems->push_back(info);
-}
-
-#if defined(ENABLE_PEPPER_CDMS)
-// External Clear Key (used for testing).
-static void AddExternalClearKey(
-    std::vector<KeySystemInfo>* concrete_key_systems) {
-  static const char kExternalClearKeyKeySystem[] =
-      "org.chromium.externalclearkey";
-  static const char kExternalClearKeyPepperType[] =
-      "application/x-ppapi-clearkey-cdm";
-
-  KeySystemInfo info(kExternalClearKeyKeySystem);
-
-  info.supported_types.push_back(std::make_pair(kAudioWebM, kVorbis));
-  info.supported_types.push_back(std::make_pair(kVideoWebM, kVorbisVP8));
-#if defined(USE_PROPRIETARY_CODECS)
-  info.supported_types.push_back(std::make_pair(kAudioMp4, kMp4a));
-  info.supported_types.push_back(std::make_pair(kVideoMp4, kMp4aAvc1));
-#endif  // defined(USE_PROPRIETARY_CODECS)
-
-  info.pepper_type = kExternalClearKeyPepperType;
-
-  concrete_key_systems->push_back(info);
-}
-#endif  // defined(ENABLE_PEPPER_CDMS)
-
-void AddKeySystems(std::vector<KeySystemInfo>* key_systems_info) {
-  AddClearKey(key_systems_info);
-
-#if defined(ENABLE_PEPPER_CDMS)
-  AddExternalClearKey(key_systems_info);
-#endif
-
-#if defined(WIDEVINE_CDM_AVAILABLE)
-#if defined(ENABLE_PEPPER_CDMS)
-  AddPepperBasedWidevine(key_systems_info);
-#elif defined(OS_ANDROID)
-  AddAndroidWidevine(key_systems_info);
-#endif
-#endif
-}
-
 bool IsCanPlayTypeSuppressed(const std::string& key_system) {
 #if defined(DISABLE_WIDEVINE_CDM_CANPLAYTYPE)
   // See http://crbug.com/237627.
   if (key_system == kWidevineKeySystem &&
       !CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kOverrideEncryptedMediaCanPlayType))
     return true;
 #endif
   return false;
 }
 
 std::string KeySystemNameForUMAInternal(const WebKit::WebString& key_system) {
   if (key_system == kClearKeyKeySystem)
     return "ClearKey";
 #if defined(WIDEVINE_CDM_AVAILABLE)
   if (key_system == kWidevineKeySystem)
     return "Widevine";
 #endif  // WIDEVINE_CDM_AVAILABLE
   return "Unknown";
 }
 
 } // namespace content