GMPVideoPlaneImpl.h

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/* -*- 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 GMPVideoPlaneImpl_h_

#define GMPVideoPlaneImpl_h_

#include "gmp-video-plane.h"

#include "mozilla/ipc/Shmem.h"

namespace mozilla::gmp {

class GMPVideoHostImpl;

class GMPPlaneData;

class GMPPlaneImpl : public GMPPlane {

  friend struct IPC::ParamTraits<mozilla::gmp::GMPPlaneImpl>;

 public:

  explicit GMPPlaneImpl(GMPVideoHostImpl* aHost);

  GMPPlaneImpl(const GMPPlaneData& aPlaneData, GMPVideoHostImpl* aHost);

  virtual ~GMPPlaneImpl();

  // This is called during a normal destroy sequence, which is

  // when a consumer is finished or during XPCOM shutdown.

  void DoneWithAPI();

  // This is called when something has gone wrong - specicifically,

  // a child process has crashed. Does not attempt to release Shmem,

  // as the Shmem has already been released.

  void ActorDestroyed();

  bool InitPlaneData(GMPPlaneData& aPlaneData);

  // GMPPlane

  GMPErr CreateEmptyPlane(int32_t aAllocatedSize, int32_t aStride,

                          int32_t aPlaneSize) override;

  GMPErr Copy(const GMPPlane& aPlane) override;

  GMPErr Copy(int32_t aSize, int32_t aStride, const uint8_t* aBuffer) override;

  void Swap(GMPPlane& aPlane) override;

  int32_t AllocatedSize() const override;

  void ResetSize() override;

  bool IsZeroSize() const override;

  int32_t Stride() const override;

  const uint8_t* Buffer() const override;

  uint8_t* Buffer() override;

  void Destroy() override;

 private:

  GMPErr MaybeResize(int32_t aNewSize);

  void DestroyBuffer();

  ipc::Shmem mBuffer;

  int32_t mSize;

  int32_t mStride;

  GMPVideoHostImpl* mHost;

};

}  // namespace mozilla::gmp

#endif  // GMPVideoPlaneImpl_h_