1 files changed, 75 insertions, 0 deletions
diff --git a/dom/media/gmp/GMPVideoDecoderChild.h b/dom/media/gmp/GMPVideoDecoderChild.h
new file mode 100644
index 0000000000..3c74e5f02c
--- /dev/null
+++ b/dom/media/gmp/GMPVideoDecoderChild.h
@@ -0,0 +1,75 @@
+/* -*- 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/. */
+
+#ifndef GMPVideoDecoderChild_h_
+#define GMPVideoDecoderChild_h_
+
+#include "nsString.h"
+#include "mozilla/gmp/PGMPVideoDecoderChild.h"
+#include "gmp-video-decode.h"
+#include "GMPSharedMemManager.h"
+#include "GMPVideoHost.h"
+#include "mozilla/gmp/GMPTypes.h"
+
+namespace mozilla::gmp {
+
+class GMPContentChild;
+
+class GMPVideoDecoderChild : public PGMPVideoDecoderChild,
+                             public GMPVideoDecoderCallback,
+                             public GMPSharedMemManager {
+  friend class PGMPVideoDecoderChild;
+
+ public:
+  // Mark AddRef and Release as `final`, as they overload pure virtual
+  // implementations in PGMPVideoDecoderChild.
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(GMPVideoDecoderChild, final);
+
+  explicit GMPVideoDecoderChild(GMPContentChild* aPlugin);
+
+  void Init(GMPVideoDecoder* aDecoder);
+  GMPVideoHostImpl& Host();
+
+  // GMPVideoDecoderCallback
+  void Decoded(GMPVideoi420Frame* decodedFrame) override;
+  void ReceivedDecodedReferenceFrame(const uint64_t pictureId) override;
+  void ReceivedDecodedFrame(const uint64_t pictureId) override;
+  void InputDataExhausted() override;
+  void DrainComplete() override;
+  void ResetComplete() override;
+  void Error(GMPErr aError) override;
+
+  // GMPSharedMemManager
+  bool Alloc(size_t aSize, Shmem* aMem) override;
+  void Dealloc(Shmem&& aMem) override;
+
+ private:
+  virtual ~GMPVideoDecoderChild();
+
+  // PGMPVideoDecoderChild
+  mozilla::ipc::IPCResult RecvInitDecode(const GMPVideoCodec& aCodecSettings,
+                                         nsTArray<uint8_t>&& aCodecSpecific,
+                                         const int32_t& aCoreCount);
+  mozilla::ipc::IPCResult RecvDecode(
+      const GMPVideoEncodedFrameData& aInputFrame, const bool& aMissingFrames,
+      nsTArray<uint8_t>&& aCodecSpecificInfo, const int64_t& aRenderTimeMs);
+  mozilla::ipc::IPCResult RecvChildShmemForPool(Shmem&& aFrameBuffer);
+  mozilla::ipc::IPCResult RecvReset();
+  mozilla::ipc::IPCResult RecvDrain();
+  mozilla::ipc::IPCResult RecvDecodingComplete();
+
+  GMPContentChild* mPlugin;
+  GMPVideoDecoder* mVideoDecoder;
+  GMPVideoHostImpl mVideoHost;
+
+  // Non-zero when a GMP is blocked spinning the IPC message loop while
+  // waiting on an NeedShmem to complete.
+  int mNeedShmemIntrCount;
+  bool mPendingDecodeComplete;
+};
+
+}  // namespace mozilla::gmp
+
+#endif  // GMPVideoDecoderChild_h_