gfx/layers/composite/GPUVideoTextureHost.cpp
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/. */

#include "GPUVideoTextureHost.h"
#include "mozilla/dom/VideoDecoderManagerParent.h"
#include "ImageContainer.h"
#include "mozilla/layers/VideoBridgeParent.h"

namespace mozilla {
namespace layers {

GPUVideoTextureHost::GPUVideoTextureHost(TextureFlags aFlags,
                                         TextureHost* aWrappedTextureHost)
  : TextureHost(aFlags)
  , mWrappedTextureHost(aWrappedTextureHost)
{
  MOZ_COUNT_CTOR(GPUVideoTextureHost);
}

GPUVideoTextureHost::~GPUVideoTextureHost()
{
  MOZ_COUNT_DTOR(GPUVideoTextureHost);
}

GPUVideoTextureHost*
GPUVideoTextureHost::CreateFromDescriptor(
  TextureFlags aFlags,
  const SurfaceDescriptorGPUVideo& aDescriptor)
{
  TextureHost* wrappedTextureHost =
    VideoBridgeParent::GetSingleton()->LookupTexture(aDescriptor.handle());
  if (!wrappedTextureHost) {
    return nullptr;
  }
  return new GPUVideoTextureHost(aFlags, wrappedTextureHost);
}

bool
GPUVideoTextureHost::Lock()
{
  if (!mWrappedTextureHost) {
    return false;
  }
  return mWrappedTextureHost->Lock();
}

void
GPUVideoTextureHost::Unlock()
{
  if (!mWrappedTextureHost) {
    return;
  }
  mWrappedTextureHost->Unlock();
}

bool
GPUVideoTextureHost::BindTextureSource(CompositableTextureSourceRef& aTexture)
{
  if (!mWrappedTextureHost) {
    return false;
  }
  return mWrappedTextureHost->BindTextureSource(aTexture);
}

bool
GPUVideoTextureHost::AcquireTextureSource(CompositableTextureSourceRef& aTexture)
{
  if (!mWrappedTextureHost) {
    return false;
  }
  return mWrappedTextureHost->AcquireTextureSource(aTexture);
}

void
GPUVideoTextureHost::SetTextureSourceProvider(TextureSourceProvider* aProvider)
{
  if (mWrappedTextureHost) {
    mWrappedTextureHost->SetTextureSourceProvider(aProvider);
  }
}

YUVColorSpace
GPUVideoTextureHost::GetYUVColorSpace() const
{
  if (mWrappedTextureHost) {
    return mWrappedTextureHost->GetYUVColorSpace();
  }
  return YUVColorSpace::UNKNOWN;
}

gfx::IntSize
GPUVideoTextureHost::GetSize() const
{
  if (!mWrappedTextureHost) {
    return gfx::IntSize();
  }
  return mWrappedTextureHost->GetSize();
}

gfx::SurfaceFormat
GPUVideoTextureHost::GetFormat() const
{
  if (!mWrappedTextureHost) {
    return gfx::SurfaceFormat::UNKNOWN;
  }
  return mWrappedTextureHost->GetFormat();
}

bool
GPUVideoTextureHost::HasIntermediateBuffer() const
{
  MOZ_ASSERT(mWrappedTextureHost);

  return mWrappedTextureHost->HasIntermediateBuffer();
}

void
GPUVideoTextureHost::CreateRenderTexture(const wr::ExternalImageId& aExternalImageId)
{
  MOZ_ASSERT(mWrappedTextureHost);

  mWrappedTextureHost->CreateRenderTexture(aExternalImageId);
}

uint32_t
GPUVideoTextureHost::NumSubTextures() const
{
  MOZ_ASSERT(mWrappedTextureHost);
  return mWrappedTextureHost->NumSubTextures();
}

void
GPUVideoTextureHost::PushResourceUpdates(wr::TransactionBuilder& aResources,
                                         ResourceUpdateOp aOp,
                                         const Range<wr::ImageKey>& aImageKeys,
                                         const wr::ExternalImageId& aExtID)
{
  MOZ_ASSERT(mWrappedTextureHost);
  mWrappedTextureHost->PushResourceUpdates(aResources, aOp, aImageKeys, aExtID);
}

void
GPUVideoTextureHost::PushDisplayItems(wr::DisplayListBuilder& aBuilder,
                                      const wr::LayoutRect& aBounds,
                                      const wr::LayoutRect& aClip,
                                      wr::ImageRendering aFilter,
                                      const Range<wr::ImageKey>& aImageKeys)
{
  MOZ_ASSERT(mWrappedTextureHost);
  MOZ_ASSERT(aImageKeys.length() > 0);

  mWrappedTextureHost->PushDisplayItems(aBuilder,
                                         aBounds,
                                         aClip,
                                         aFilter,
                                         aImageKeys);
}

bool
GPUVideoTextureHost::SupportsWrNativeTexture()
{
  MOZ_ASSERT(mWrappedTextureHost);
  return mWrappedTextureHost->SupportsWrNativeTexture();
}

} // namespace layers
} // namespace mozilla