1 files changed, 95 insertions, 0 deletions
diff --git a/dom/media/gmp/widevine-adapter/WidevineUtils.cpp b/dom/media/gmp/widevine-adapter/WidevineUtils.cpp
new file mode 100644
index 000000000..925dfe1a1
--- /dev/null
+++ b/dom/media/gmp/widevine-adapter/WidevineUtils.cpp
@@ -0,0 +1,95 @@
+/* -*- 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 "WidevineUtils.h"
+#include "WidevineDecryptor.h"
+
+#include "gmp-api/gmp-errors.h"
+#include <stdarg.h>
+#include <stdio.h>
+
+namespace mozilla {
+
+#ifdef ENABLE_WIDEVINE_LOG
+void
+Log(const char* aFormat, ...)
+{
+  va_list ap;
+  va_start(ap, aFormat);
+  const size_t len = 1024;
+  char buf[len];
+  vsnprintf(buf, len, aFormat, ap);
+  va_end(ap);
+  if (getenv("GMP_LOG_FILE")) {
+    FILE* f = fopen(getenv("GMP_LOG_FILE"), "a");
+    if (f) {
+      fprintf(f, "%s\n", buf);
+      fflush(f);
+      fclose(f);
+      f = nullptr;
+    }
+  } else {
+    printf("LOG: %s\n", buf);
+  }
+}
+#endif // ENABLE_WIDEVINE_LOG
+
+GMPErr
+ToGMPErr(cdm::Status aStatus)
+{
+  switch (aStatus) {
+    case cdm::kSuccess: return GMPNoErr;
+    case cdm::kNeedMoreData: return GMPGenericErr;
+    case cdm::kNoKey: return GMPNoKeyErr;
+    case cdm::kSessionError: return GMPGenericErr;
+    case cdm::kDecryptError: return GMPCryptoErr;
+    case cdm::kDecodeError: return GMPDecodeErr;
+    case cdm::kDeferredInitialization: return GMPGenericErr;
+    default: return GMPGenericErr;
+  }
+}
+
+void InitInputBuffer(const GMPEncryptedBufferMetadata* aCrypto,
+                     int64_t aTimestamp,
+                     const uint8_t* aData,
+                     size_t aDataSize,
+                     cdm::InputBuffer &aInputBuffer,
+                     nsTArray<cdm::SubsampleEntry> &aSubsamples)
+{
+  if (aCrypto) {
+    aInputBuffer.key_id = aCrypto->KeyId();
+    aInputBuffer.key_id_size = aCrypto->KeyIdSize();
+    aInputBuffer.iv = aCrypto->IV();
+    aInputBuffer.iv_size = aCrypto->IVSize();
+    aInputBuffer.num_subsamples = aCrypto->NumSubsamples();
+    aSubsamples.SetCapacity(aInputBuffer.num_subsamples);
+    const uint16_t* clear = aCrypto->ClearBytes();
+    const uint32_t* cipher = aCrypto->CipherBytes();
+    for (size_t i = 0; i < aCrypto->NumSubsamples(); i++) {
+      aSubsamples.AppendElement(cdm::SubsampleEntry(clear[i], cipher[i]));
+    }
+  }
+  aInputBuffer.data = aData;
+  aInputBuffer.data_size = aDataSize;
+  aInputBuffer.subsamples = aSubsamples.Elements();
+  aInputBuffer.timestamp = aTimestamp;
+}
+
+CDMWrapper::CDMWrapper(cdm::ContentDecryptionModule_8* aCDM,
+                       WidevineDecryptor* aDecryptor)
+  : mCDM(aCDM)
+  , mDecryptor(aDecryptor)
+{
+  MOZ_ASSERT(mCDM);
+}
+
+CDMWrapper::~CDMWrapper()
+{
+  Log("CDMWrapper destroying CDM=%p", mCDM);
+  mCDM->Destroy();
+  mCDM = nullptr;
+}
+
+} // namespace mozilla