b/328305808

Allows playback of encrypted content by wrapping SbDrm in a media::ContentDecryptionModule interface.

cobalt/build/configs/chromium_linux-x64x11/args.gn

@@ -9,3 +9,5 @@ chrome_pgo_phase = 0
 # E/GL(ES). Partners are only required to support upto GLES 2.0 : https://developers.google.com/youtube/cobalt/docs/reference/starboard/modules/16/gles#gles_version
 # Disable Vulkan until we formally decide to support it.
 enable_vulkan = false
+
+enable_widevine = true

content/renderer/media/media_factory.cc

@@ -92,6 +92,8 @@
 #include "media/cdm/fuchsia/fuchsia_cdm_factory.h"
 #include "media/fuchsia/video/fuchsia_decoder_factory.h"
 #include "media/mojo/clients/mojo_fuchsia_cdm_provider.h"
+#elif BUILDFLAG(USE_STARBOARD_MEDIA)
+#include "media/starboard/starboard_cdm_factory.h"
 #elif BUILDFLAG(ENABLE_MOJO_CDM)
 #include "media/mojo/clients/mojo_cdm_factory.h"  // nogncheck
 #else
@@ -855,6 +857,8 @@ media::CdmFactory* MediaFactory::GetCdmFactory() {
   DCHECK(interface_broker_);
   cdm_factory_ = std::make_unique<media::FuchsiaCdmFactory>(
       std::make_unique<media::MojoFuchsiaCdmProvider>(interface_broker_));
+#elif BUILDFLAG(USE_STARBOARD_MEDIA)
+  cdm_factory_ = std::make_unique<media::StarboardCdmFactory>();
 #elif BUILDFLAG(ENABLE_MOJO_CDM)
   cdm_factory_ =
       std::make_unique<media::MojoCdmFactory>(GetMediaInterfaceFactory());

content/renderer/media/media_permission_dispatcher.cc

@@ -149,8 +149,12 @@ void MediaPermissionDispatcher::OnPermissionStatus(
   PermissionStatusCB permission_status_cb = std::move(iter->second);
   requests_.erase(iter);
 
+#if BUILDFLAG(USE_STARBOARD_MEDIA)
+  std::move(permission_status_cb).Run(true);
+#else // BUILDFLAG(USE_STARBOARD_MEDIA)
   std::move(permission_status_cb)
       .Run(status == blink::mojom::PermissionStatus::GRANTED);
+#endif // BUILDFLAG(USE_STARBOARD_MEDIA)
 }
 
 void MediaPermissionDispatcher::OnConnectionError() {

content/shell/renderer/shell_content_renderer_client.cc

@@ -40,6 +40,11 @@
 #include "third_party/blink/public/web/web_view.h"
 #include "v8/include/v8.h"
 
+#if BUILDFLAG(USE_STARBOARD_MEDIA)
+#include "starboard/media.h"
+#include "components/cdm/renderer/widevine_key_system_info.h"
+#endif  // BUILDFLAG(USE_STARBOARD_MEDIA)
+
 #if BUILDFLAG(ENABLE_PLUGINS)
 #include "ppapi/shared_impl/ppapi_switches.h"  // nogncheck
 #endif
@@ -49,10 +54,6 @@
 #include "media/base/media_switches.h"
 #endif
 
-#if BUILDFLAG(USE_STARBOARD_MEDIA)
-#include "starboard/media.h"
-#endif  // BUILDFLAG(USE_STARBOARD_MEDIA)
-
 namespace content {
 
 namespace {
@@ -270,6 +271,55 @@ ShellContentRendererClient::CreateURLLoaderThrottleProvider(
   return std::make_unique<ShellContentRendererUrlLoaderThrottleProvider>();
 }
 
+#if BUILDFLAG(USE_STARBOARD_MEDIA)
+media::SupportedCodecs GetStarboardEmeSupportedCodecs() {
+  media::SupportedCodecs codecs = ::media::EME_CODEC_AAC | ::media::EME_CODEC_AVC1 |
+                           ::media::EME_CODEC_VP9_PROFILE0 |
+                           ::media::EME_CODEC_VP9_PROFILE2 |
+                           ::media::EME_CODEC_VP8 |
+                           ::media::EME_CODEC_OPUS |
+                           ::media::EME_CODEC_AV1 |
+                           ::media::EME_CODEC_AC3 |
+                           ::media::EME_CODEC_EAC3;
+  return codecs;
+}
+
+void AddStarboardCmaKeySystems(::media::KeySystemInfos* key_system_infos) {
+  media::SupportedCodecs codecs = GetStarboardEmeSupportedCodecs();
+
+  using Robustness = cdm::WidevineKeySystemInfo::Robustness;
+
+  const base::flat_set<media::EncryptionScheme> kEncryptionSchemes = {
+    media::EncryptionScheme::kCenc, media::EncryptionScheme::kCbcs};
+
+  const base::flat_set<media::CdmSessionType> kSessionTypes = {
+    media::CdmSessionType::kTemporary, media::CdmSessionType::kPersistentLicense};
+
+  key_system_infos->emplace_back(new cdm::WidevineKeySystemInfo(
+      codecs,                             // Regular codecs.
+      kEncryptionSchemes,                 // Encryption schemes.
+      kSessionTypes,                      // Session types.
+      codecs,                             // Hardware secure codecs.
+      kEncryptionSchemes,                 // Hardware secure encryption schemes.
+      kSessionTypes,                      // Hardware secure session types.
+      Robustness::HW_SECURE_CRYPTO,       // Max audio robustness.
+      Robustness::HW_SECURE_ALL,          // Max video robustness.
+      media::EmeFeatureSupport::ALWAYS_ENABLED,  // Persistent state.
+      media::EmeFeatureSupport::ALWAYS_ENABLED));  // Distinctive identifier.
+}
+
+void ShellContentRendererClient::GetSupportedKeySystems(
+    media::GetSupportedKeySystemsCB cb) {
+  media::KeySystemInfos key_systems;
+  if (base::FeatureList::IsEnabled(media::kExternalClearKeyForTesting))
+    key_systems.push_back(
+        std::make_unique<cdm::ExternalClearKeyKeySystemInfo>());
+  AddStarboardCmaKeySystems(&key_systems);
+  std::move(cb).Run(std::move(key_systems));
+}
+
+#else // BUILDFLAG(USE_STARBOARD_MEDIA)
+
 #if BUILDFLAG(ENABLE_MOJO_CDM)
 void ShellContentRendererClient::GetSupportedKeySystems(
     media::GetSupportedKeySystemsCB cb) {
@@ -281,6 +331,8 @@ void ShellContentRendererClient::GetSupportedKeySystems(
 }
 #endif
 
+#endif // BUILDFLAG(USE_STARBOARD_MEDIA)
+
 #if BUILDFLAG(USE_STARBOARD_MEDIA)
 // TODO(b/376542844): Eliminate the usage of hardcoded MIME string once we
 // support to query codec capabilities with configs.

media/base/cdm_context.cc

@@ -47,6 +47,13 @@ MediaCryptoContext* CdmContext::GetMediaCryptoContext() {
 }
 #endif
 
+#if BUILDFLAG(USE_STARBOARD_MEDIA)
+SbDrmSystem CdmContext::GetSbDrmSystem() {
+  return kSbDrmSystemInvalid;
+}
+#endif // BUILDFLAG(USE_STARBOARD_MEDIA)
+
+
 #if BUILDFLAG(IS_FUCHSIA)
 FuchsiaCdmContext* CdmContext::GetFuchsiaCdmContext() {
   return nullptr;

media/base/cdm_context.h

@@ -23,6 +23,9 @@ class ChromeOsCdmContext;
 }
 #endif
 
+#if BUILDFLAG(USE_STARBOARD_MEDIA)
+#include "starboard/drm.h"
+#endif  // BUILDFLAG(USE_STARBOARD_MEDIA)
 namespace media {
 
 class CallbackRegistration;
@@ -112,6 +115,10 @@ class MEDIA_EXPORT CdmContext {
   virtual MediaCryptoContext* GetMediaCryptoContext();
 #endif
 
+#if BUILDFLAG(USE_STARBOARD_MEDIA)
+  virtual SbDrmSystem GetSbDrmSystem();
+#endif // BUILDFLAG(USE_STARBOARD_MEDIA)
+
 #if BUILDFLAG(IS_FUCHSIA)
   // Returns FuchsiaCdmContext interface when the context is backed by Fuchsia
   // CDM. Otherwise returns nullptr.

media/starboard/BUILD.gn

@@ -77,6 +77,12 @@ source_set("starboard") {
       "decoder_buffer_allocator.cc",
       "decoder_buffer_allocator.h",
       "decoder_buffer_memory_info.h",
+      "starboard_cdm.cc",
+      "starboard_cdm.h",
+      "starboard_cdm_factory.cc",
+      "starboard_cdm_factory.h",
+      "starboard_cdm_session.cc",
+      "starboard_cdm_session.h",
       "starboard_memory_allocator.h",
     ]
   }