gfx/layers/composite/GPUVideoTextureHost.h
author Alex Gaynor <agaynor@mozilla.com>
Wed, 12 Sep 2018 00:17:10 +0000
changeset 436045 a66a85285cb09523916bc95e30a42056b798e935
parent 428349 7bb705198ab362f036c9da9fae69f97d7df907e1
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1490415 - prevent creating a GPUVideoTextureHost with a null wrapped texture; r=sotaro Differential Revision: https://phabricator.services.mozilla.com/D5563

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 MOZILLA_GFX_GPUVIDEOTEXTUREHOST_H
#define MOZILLA_GFX_GPUVIDEOTEXTUREHOST_H

#include "mozilla/layers/TextureHost.h"

namespace mozilla {
namespace layers {

class GPUVideoTextureHost : public TextureHost
{
public:
  static GPUVideoTextureHost* CreateFromDescriptor(
    TextureFlags aFlags,
    const SurfaceDescriptorGPUVideo& aDescriptor);

  virtual ~GPUVideoTextureHost();

  virtual void DeallocateDeviceData() override {}

  virtual void SetTextureSourceProvider(TextureSourceProvider* aProvider) override;

  virtual bool Lock() override;

  virtual void Unlock() override;

  virtual gfx::SurfaceFormat GetFormat() const override;

  virtual bool BindTextureSource(CompositableTextureSourceRef& aTexture) override;
  virtual bool AcquireTextureSource(CompositableTextureSourceRef& aTexture) override;

  virtual already_AddRefed<gfx::DataSourceSurface> GetAsSurface() override
  {
    return nullptr; // XXX - implement this (for MOZ_DUMP_PAINTING)
  }

  virtual YUVColorSpace GetYUVColorSpace() const override;

  virtual gfx::IntSize GetSize() const override;

#ifdef MOZ_LAYERS_HAVE_LOG
  virtual const char* Name() override { return "GPUVideoTextureHost"; }
#endif

  virtual bool HasIntermediateBuffer() const override;

  virtual void CreateRenderTexture(const wr::ExternalImageId& aExternalImageId) override;

  virtual uint32_t NumSubTextures() const override;

  virtual void PushResourceUpdates(wr::TransactionBuilder& aResources,
                                   ResourceUpdateOp aOp,
                                   const Range<wr::ImageKey>& aImageKeys,
                                   const wr::ExternalImageId& aExtID) override;

  virtual void PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                                const wr::LayoutRect& aBounds,
                                const wr::LayoutRect& aClip,
                                wr::ImageRendering aFilter,
                                const Range<wr::ImageKey>& aImageKeys) override;

  virtual bool SupportsWrNativeTexture() override;

protected:
  GPUVideoTextureHost(TextureFlags aFlags, TextureHost* aWrappedTextureHost);

  RefPtr<TextureHost> mWrappedTextureHost;
};

} // namespace layers
} // namespace mozilla

#endif // MOZILLA_GFX_GPUVIDEOTEXTUREHOST_H