/* 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 "GMPSharedMemManager.h"
#include "GMPVideoHost.h"
#include "gmp-video-decode.h"
#include "mozilla/gmp/GMPTypes.h"
#include "mozilla/gmp/PGMPVideoDecoderChild.h"
#include "nsString.h"

namespace mozilla::gmp {

class GMPContentChild;

class GMPVideoDecoderChild final : public PGMPVideoDecoderChild,
                                   public GMPVideoDecoderCallback,
                                   public GMPVideoHostImpl {
  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);

  // 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 MgrCanSend() const override { return CanSend(); }
  bool MgrIsOnOwningThread() const override;
  void MgrDeallocShmem(Shmem& aMem) override {
    if (CanSend()) {
      DeallocShmem(aMem);
    }
  }

 private:
  virtual ~GMPVideoDecoderChild();

  // PGMPVideoDecoderChild
  mozilla::ipc::IPCResult RecvInitDecode(const GMPVideoCodec& aCodecSettings,
                                         nsTArray<uint8_t>&& aCodecSpecific,
                                         const int32_t& aCoreCount);
  mozilla::ipc::IPCResult RecvGiveShmem(ipc::Shmem&& aOutputShmem);
  mozilla::ipc::IPCResult RecvDecode(
      const GMPVideoEncodedFrameData& aInputFrame, ipc::Shmem&& aInputShmem,
      const bool& aMissingFrames, nsTArray<uint8_t>&& aCodecSpecificInfo,
      const int64_t& aRenderTimeMs);
  mozilla::ipc::IPCResult RecvReset();
  mozilla::ipc::IPCResult RecvDrain();
  void ActorDestroy(ActorDestroyReason why) override;

  GMPContentChild* mPlugin;
  GMPVideoDecoder* mVideoDecoder;
  RefPtr<GMPVideoDecoderChild> mDrainSelfRef;
  RefPtr<GMPVideoDecoderChild> mResetSelfRef;
};

}  // namespace mozilla::gmp

#endif  // GMPVideoDecoderChild_h_