gfx/layers/DMABUFSurfaceImage.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 "DMABUFSurfaceImage.h"
   8 #include "mozilla/widget/DMABufSurface.h"
   9 #include "mozilla/layers/CompositableClient.h"
  10 #include "mozilla/layers/CompositableForwarder.h"
  11 #include "mozilla/layers/DMABUFTextureClientOGL.h"
  12 #include "mozilla/layers/TextureForwarder.h"
  13 #include "mozilla/ScopeExit.h"
  14 #include "mozilla/StaticMutex.h"
  15 #include "GLContext.h"
  16 #include "GLContextProvider.h"
  17 #include "GLBlitHelper.h"
  18 #include "GLReadTexImageHelper.h"
  19 #include "GLContextTypes.h"  // for GLContext, etc
  20 #include "GLContextEGL.h"
  21 #include "GLContextProvider.h"
  22 #include "ScopedGLHelpers.h"
  23
  24 using namespace mozilla;
  25 using namespace mozilla::layers;
  26 using namespace mozilla::gfx;
  27 using namespace mozilla::gl;
  28
  29 #ifdef MOZ_LOGGING
  30 #  undef DMABUF_LOG
  31 extern mozilla::LazyLogModule gDmabufLog;
  32 #  define DMABUF_LOG(str, ...) \
  33     MOZ_LOG(gDmabufLog, mozilla::LogLevel::Debug, (str, ##__VA_ARGS__))
  34 #else
  35 #  define DMABUF_LOG(args)
  36 #endif /* MOZ_LOGGING */
  37
  38 DMABUFSurfaceImage::DMABUFSurfaceImage(DMABufSurface* aSurface)
  39     : Image(nullptr, ImageFormat::DMABUF), mSurface(aSurface) {
  40   DMABUF_LOG("DMABUFSurfaceImage::DMABUFSurfaceImage (%p) aSurface %p UID %d\n",
  41              this, aSurface, aSurface->GetUID());
  42   mSurface->GlobalRefAdd();
  43 }
  44
  45 DMABUFSurfaceImage::~DMABUFSurfaceImage() {
  46   DMABUF_LOG(
  47       "DMABUFSurfaceImage::~DMABUFSurfaceImage (%p) mSurface %p UID %d\n", this,
  48       (void*)mSurface.get(), mSurface->GetUID());
  49   mSurface->GlobalRefRelease();
  50 }
  51
  52 already_AddRefed<gfx::SourceSurface> DMABUFSurfaceImage::GetAsSourceSurface() {
  53   return mSurface->GetAsSourceSurface();
  54 }
  55
  56 nsresult DMABUFSurfaceImage::BuildSurfaceDescriptorBuffer(
  57     SurfaceDescriptorBuffer& aSdBuffer, BuildSdbFlags aFlags,
  58     const std::function<MemoryOrShmem(uint32_t)>& aAllocate) {
  59   return mSurface->BuildSurfaceDescriptorBuffer(aSdBuffer, aFlags, aAllocate);
  60 }
  61
  62 TextureClient* DMABUFSurfaceImage::GetTextureClient(
  63     KnowsCompositor* aKnowsCompositor) {
  64   if (!mTextureClient) {
  65     BackendType backend = BackendType::NONE;
  66     mTextureClient = TextureClient::CreateWithData(
  67         DMABUFTextureData::Create(mSurface, backend), TextureFlags::DEFAULT,
  68         aKnowsCompositor->GetTextureForwarder());
  69   }
  70   return mTextureClient;
  71 }
  72
  73 gfx::IntSize DMABUFSurfaceImage::GetSize() const {
  74   return gfx::IntSize::Truncate(mSurface->GetWidth(), mSurface->GetHeight());
  75 }