gfx/layers/client/GPUVideoTextureClient.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "GPUVideoTextureClient.h"
   8 #include "GPUVideoImage.h"
   9 #include "mozilla/gfx/2D.h"
  10
  11 namespace mozilla {
  12 namespace layers {
  13
  14 using namespace gfx;
  15
  16 GPUVideoTextureData::GPUVideoTextureData(IGPUVideoSurfaceManager* aManager,
  17                                          const SurfaceDescriptorGPUVideo& aSD,
  18                                          const gfx::IntSize& aSize)
  19     : mManager(aManager), mSD(aSD), mSize(aSize) {}
  20
  21 GPUVideoTextureData::~GPUVideoTextureData() = default;
  22
  23 bool GPUVideoTextureData::Serialize(SurfaceDescriptor& aOutDescriptor) {
  24   aOutDescriptor = mSD;
  25   return true;
  26 }
  27
  28 void GPUVideoTextureData::FillInfo(TextureData::Info& aInfo) const {
  29   aInfo.size = mSize;
  30   // TODO: We should probably try do better for this.
  31   // layers::Image doesn't expose a format, so it's hard
  32   // to figure out in VideoDecoderParent.
  33   aInfo.format = SurfaceFormat::B8G8R8X8;
  34   aInfo.hasSynchronization = false;
  35   aInfo.supportsMoz2D = false;
  36   aInfo.canExposeMappedData = false;
  37 }
  38
  39 already_AddRefed<SourceSurface> GPUVideoTextureData::GetAsSourceSurface() {
  40   return mManager->Readback(mSD);
  41 }
  42
  43 void GPUVideoTextureData::Deallocate(LayersIPCChannel* aAllocator) {
  44   mManager->DeallocateSurfaceDescriptor(mSD);
  45   mSD = SurfaceDescriptorGPUVideo();
  46 }
  47
  48 void GPUVideoTextureData::Forget(LayersIPCChannel* aAllocator) {
  49   // We always need to manually deallocate on the client side.
  50   // Ideally we'd set up our TextureClient with the DEALLOCATE_CLIENT
  51   // flag, but that forces texture destruction to be synchronous.
  52   // Instead let's just deallocate from here as well.
  53   Deallocate(aAllocator);
  54 }
  55
  56 }  // namespace layers
  57 }  // namespace mozilla