1 files changed, 168 insertions, 0 deletions
diff --git a/dom/media/gmp/widevine-adapter/WidevineAdapter.cpp b/dom/media/gmp/widevine-adapter/WidevineAdapter.cpp
new file mode 100644
index 000000000..74b5c38e8
--- /dev/null
+++ b/dom/media/gmp/widevine-adapter/WidevineAdapter.cpp
@@ -0,0 +1,168 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "WidevineAdapter.h"
+#include "content_decryption_module.h"
+#include "VideoUtils.h"
+#include "WidevineDecryptor.h"
+#include "WidevineUtils.h"
+#include "WidevineVideoDecoder.h"
+#include "gmp-api/gmp-entrypoints.h"
+#include "gmp-api/gmp-decryption.h"
+#include "gmp-api/gmp-video-codec.h"
+#include "gmp-api/gmp-platform.h"
+
+static const GMPPlatformAPI* sPlatform = nullptr;
+
+namespace mozilla {
+
+GMPErr GMPGetCurrentTime(GMPTimestamp* aOutTime) {
+  return sPlatform->getcurrenttime(aOutTime);
+}
+
+// Call on main thread only.
+GMPErr GMPSetTimerOnMainThread(GMPTask* aTask, int64_t aTimeoutMS) {
+  return sPlatform->settimer(aTask, aTimeoutMS);
+}
+
+GMPErr GMPCreateRecord(const char* aRecordName,
+                       uint32_t aRecordNameSize,
+                       GMPRecord** aOutRecord,
+                       GMPRecordClient* aClient)
+{
+  return sPlatform->createrecord(aRecordName, aRecordNameSize, aOutRecord, aClient);
+}
+
+void
+WidevineAdapter::SetAdaptee(PRLibrary* aLib)
+{
+  mLib = aLib;
+}
+
+void* GetCdmHost(int aHostInterfaceVersion, void* aUserData)
+{
+  Log("GetCdmHostFunc(%d, %p)", aHostInterfaceVersion, aUserData);
+  WidevineDecryptor* decryptor = reinterpret_cast<WidevineDecryptor*>(aUserData);
+  MOZ_ASSERT(decryptor);
+  return static_cast<cdm::Host_8*>(decryptor);
+}
+
+#define STRINGIFY(s) _STRINGIFY(s)
+#define _STRINGIFY(s) #s
+
+GMPErr
+WidevineAdapter::GMPInit(const GMPPlatformAPI* aPlatformAPI)
+{
+#ifdef ENABLE_WIDEVINE_LOG
+  if (getenv("GMP_LOG_FILE")) {
+    // Clear log file.
+    FILE* f = fopen(getenv("GMP_LOG_FILE"), "w");
+    if (f) {
+      fclose(f);
+    }
+  }
+#endif
+
+  sPlatform = aPlatformAPI;
+  if (!mLib) {
+    return GMPGenericErr;
+  }
+
+  auto init = reinterpret_cast<decltype(::INITIALIZE_CDM_MODULE)*>(
+    PR_FindFunctionSymbol(mLib, STRINGIFY(INITIALIZE_CDM_MODULE)));
+  if (!init) {
+    return GMPGenericErr;
+  }
+
+  Log(STRINGIFY(INITIALIZE_CDM_MODULE)"()");
+  init();
+
+  return GMPNoErr;
+}
+
+GMPErr
+WidevineAdapter::GMPGetAPI(const char* aAPIName,
+                           void* aHostAPI,
+                           void** aPluginAPI,
+                           uint32_t aDecryptorId)
+{
+  Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p",
+      aAPIName, aHostAPI, aPluginAPI, this, aDecryptorId);
+  if (!strcmp(aAPIName, GMP_API_DECRYPTOR)) {
+    if (WidevineDecryptor::GetInstance(aDecryptorId)) {
+      // We only support one CDM instance per PGMPDecryptor. Fail!
+      Log("WidevineAdapter::GMPGetAPI() Tried to create more than once CDM per IPDL actor! FAIL!");
+      return GMPQuotaExceededErr;
+    }
+    auto create = reinterpret_cast<decltype(::CreateCdmInstance)*>(
+      PR_FindFunctionSymbol(mLib, "CreateCdmInstance"));
+    if (!create) {
+      Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p FAILED to find CreateCdmInstance",
+        aAPIName, aHostAPI, aPluginAPI, this, aDecryptorId);
+      return GMPGenericErr;
+    }
+
+    WidevineDecryptor* decryptor = new WidevineDecryptor();
+
+    auto cdm = reinterpret_cast<cdm::ContentDecryptionModule*>(
+      create(cdm::ContentDecryptionModule::kVersion,
+             kEMEKeySystemWidevine.get(),
+             kEMEKeySystemWidevine.Length(),
+             &GetCdmHost,
+             decryptor));
+    if (!cdm) {
+      Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p FAILED to create cdm",
+          aAPIName, aHostAPI, aPluginAPI, this, aDecryptorId);
+      return GMPGenericErr;
+    }
+    Log("cdm: 0x%x", cdm);
+    RefPtr<CDMWrapper> wrapper(new CDMWrapper(cdm, decryptor));
+    decryptor->SetCDM(wrapper, aDecryptorId);
+    *aPluginAPI = decryptor;
+
+  } else if (!strcmp(aAPIName, GMP_API_VIDEO_DECODER)) {
+    RefPtr<CDMWrapper> wrapper = WidevineDecryptor::GetInstance(aDecryptorId);
+    if (!wrapper) {
+      Log("WidevineAdapter::GMPGetAPI(%s, 0x%p, 0x%p, %u) this=0x%p No cdm for video decoder",
+          aAPIName, aHostAPI, aPluginAPI, thiss, aDecryptorId);
+      return GMPGenericErr;
+    }
+    *aPluginAPI = new WidevineVideoDecoder(static_cast<GMPVideoHost*>(aHostAPI),
+                                           wrapper);
+  }
+  return *aPluginAPI ? GMPNoErr : GMPNotImplementedErr;
+}
+
+void
+WidevineAdapter::GMPShutdown()
+{
+  Log("WidevineAdapter::GMPShutdown()");
+
+  decltype(::DeinitializeCdmModule)* deinit;
+  deinit = (decltype(deinit))(PR_FindFunctionSymbol(mLib, "DeinitializeCdmModule"));
+  if (deinit) {
+    Log("DeinitializeCdmModule()");
+    deinit();
+  }
+}
+
+void
+WidevineAdapter::GMPSetNodeId(const char* aNodeId, uint32_t aLength)
+{
+
+}
+
+/* static */
+bool
+WidevineAdapter::Supports(int32_t aModuleVersion,
+                          int32_t aInterfaceVersion,
+                          int32_t aHostVersion)
+{
+  return aModuleVersion == CDM_MODULE_VERSION &&
+         aInterfaceVersion == cdm::ContentDecryptionModule::kVersion &&
+         aHostVersion == cdm::Host_8::kVersion;
+}
+
+} // namespace mozilla