Revert 222074 "Refactor KeySystems code to call a function to po..."

trunk/src/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 "content/renderer/media/crypto/key_systems.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,
+#if defined(ENABLE_PEPPER_CDMS)
+static const char kExternalClearKeyKeySystem[] =
+    "org.chromium.externalclearkey";
+#elif defined(OS_ANDROID)
+static const uint8 kEmptyUuid[16] =
+    { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+      0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
+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_AVAILABLE)
+
+#if defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
+// The supported codecs depend on what the CDM provides.
+static const char kWidevineVideoMp4Codecs[] =
+#if defined(WIDEVINE_CDM_AVC1_SUPPORT_AVAILABLE) && \
+    defined(WIDEVINE_CDM_AAC_SUPPORT_AVAILABLE)
+    "avc1,mp4a";
+#elif defined(WIDEVINE_CDM_AVC1_SUPPORT_AVAILABLE)
+    "avc1";
+#else
+    "";  // No codec strings are supported.
+#endif
+
+static const char kWidevineAudioMp4Codecs[] =
+#if defined(WIDEVINE_CDM_AAC_SUPPORT_AVAILABLE)
+    "mp4a";
+#else
+    "";  // No codec strings are supported.
+#endif
+#endif  // defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
+
+static void RegisterWidevine() {
 #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);
+  AddConcreteSupportedKeySystem(
+      kWidevineKeySystem,
+      false,
+#if defined(ENABLE_PEPPER_CDMS)
+      kWidevineCdmPluginMimeType,
+#elif defined(OS_ANDROID)
+      kWidevineUuid,
+#endif  // defined(ENABLE_PEPPER_CDMS)
+      "com.widevine");
+#if !defined(OS_ANDROID)
+  AddSupportedType(kWidevineKeySystem, "video/webm", "vorbis,vp8,vp8.0");
+  AddSupportedType(kWidevineKeySystem, "audio/webm", "vorbis");
+#endif  // !defined(OS_ANDROID)
+#if defined(USE_PROPRIETARY_CODECS) && \
+    defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
+  AddSupportedType(kWidevineKeySystem, "video/mp4", kWidevineVideoMp4Codecs);
+  AddSupportedType(kWidevineKeySystem, "audio/mp4", kWidevineAudioMp4Codecs);
+#endif  // defined(USE_PROPRIETARY_CODECS) &&
+        // defined(WIDEVINE_CDM_CENC_SUPPORT_AVAILABLE)
+}
+#endif  // WIDEVINE_CDM_AVAILABLE
 
-  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));
-  }
 
+static void RegisterClearKey() {
+  // Clear Key.
+  AddConcreteSupportedKeySystem(
+      kClearKeyKeySystem,
+      true,
+#if defined(ENABLE_PEPPER_CDMS)
+      std::string(),
+#elif defined(OS_ANDROID)
+      kEmptyUuid,
+#endif  // defined(ENABLE_PEPPER_CDMS)
+      std::string());
+  AddSupportedType(kClearKeyKeySystem, "video/webm", "vorbis,vp8,vp8.0");
+  AddSupportedType(kClearKeyKeySystem, "audio/webm", "vorbis");
 #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));
-  }
+  AddSupportedType(kClearKeyKeySystem, "video/mp4", "avc1,mp4a");
+  AddSupportedType(kClearKeyKeySystem, "audio/mp4", "mp4a");
 #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;
-
+static void RegisterExternalClearKey() {
+  // External Clear Key (used for testing).
+  AddConcreteSupportedKeySystem(kExternalClearKeyKeySystem, false,
+                                "application/x-ppapi-clearkey-cdm",
+                                std::string());
+  AddSupportedType(kExternalClearKeyKeySystem,
+                   "video/webm", "vorbis,vp8,vp8.0");
+  AddSupportedType(kExternalClearKeyKeySystem, "audio/webm", "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
+  AddSupportedType(kExternalClearKeyKeySystem, "video/mp4", "avc1,mp4a");
+  AddSupportedType(kExternalClearKeyKeySystem, "audio/mp4", "mp4a");
 #endif  // defined(USE_PROPRIETARY_CODECS)
-
-  AddWidevineForTypes(supported_codecs, concrete_key_systems);
-}
-#elif defined(OS_ANDROID)
-static void AddAndroidWidevine(
-    std::vector<KeySystemInfo>* concrete_key_systems) {
-  SupportedCodecs supported_codecs = MP4_AAC | MP4_AVC1;
-  AddWidevineForTypes(supported_codecs, concrete_key_systems);
-}
-#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);
+void RegisterKeySystems() {
+  RegisterClearKey();
 
 #if defined(ENABLE_PEPPER_CDMS)
-  AddExternalClearKey(key_systems_info);
+  RegisterExternalClearKey();
 #endif
 
 #if defined(WIDEVINE_CDM_AVAILABLE)
-#if defined(ENABLE_PEPPER_CDMS)
-  AddPepperBasedWidevine(key_systems_info);
-#elif defined(OS_ANDROID)
-  AddAndroidWidevine(key_systems_info);
-#endif
+  RegisterWidevine();
 #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