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-rw-r--r--dom/media/gmp/DecryptJob.cpp46
1 files changed, 46 insertions, 0 deletions
diff --git a/dom/media/gmp/DecryptJob.cpp b/dom/media/gmp/DecryptJob.cpp
new file mode 100644
index 0000000000..affda3668f
--- /dev/null
+++ b/dom/media/gmp/DecryptJob.cpp
@@ -0,0 +1,46 @@
+/* -*- 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 "DecryptJob.h"
+#include "mozilla/Atomics.h"
+
+namespace mozilla {
+
+static Atomic<uint32_t> sDecryptJobInstanceCount(0u);
+
+DecryptJob::DecryptJob(MediaRawData* aSample)
+ : mId(++sDecryptJobInstanceCount), mSample(aSample) {}
+
+RefPtr<DecryptPromise> DecryptJob::Ensure() {
+ return mPromise.Ensure(__func__);
+}
+
+void DecryptJob::PostResult(DecryptStatus aResult) {
+ nsTArray<uint8_t> empty;
+ PostResult(aResult, empty);
+}
+
+void DecryptJob::PostResult(DecryptStatus aResult,
+ Span<const uint8_t> aDecryptedData) {
+ if (aDecryptedData.Length() != mSample->Size()) {
+ NS_WARNING("CDM returned incorrect number of decrypted bytes");
+ }
+ if (aResult == eme::Ok) {
+ UniquePtr<MediaRawDataWriter> writer(mSample->CreateWriter());
+ PodCopy(writer->Data(), aDecryptedData.Elements(),
+ std::min<size_t>(aDecryptedData.Length(), mSample->Size()));
+ } else if (aResult == eme::NoKeyErr) {
+ NS_WARNING("CDM returned NoKeyErr");
+ // We still have the encrypted sample, so we can re-enqueue it to be
+ // decrypted again once the key is usable again.
+ } else {
+ nsAutoCString str("CDM returned decode failure DecryptStatus=");
+ str.AppendInt(aResult);
+ NS_WARNING(str.get());
+ }
+ mPromise.Resolve(DecryptResult(aResult, mSample), __func__);
+}
+
+} // namespace mozilla