1 files changed, 123 insertions, 0 deletions
diff --git a/gfx/layers/opengl/DMABUFTextureClientOGL.cpp b/gfx/layers/opengl/DMABUFTextureClientOGL.cpp
new file mode 100644
index 0000000000..017c9aba8c
--- /dev/null
+++ b/gfx/layers/opengl/DMABUFTextureClientOGL.cpp
@@ -0,0 +1,123 @@
+/* -*- 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 "DMABUFTextureClientOGL.h"
+#include "mozilla/widget/DMABufSurface.h"
+#include "gfxPlatform.h"
+
+namespace mozilla::layers {
+
+using namespace gfx;
+
+DMABUFTextureData::DMABUFTextureData(DMABufSurface* aSurface,
+                                     BackendType aBackend)
+    : mSurface(aSurface), mBackend(aBackend) {
+  MOZ_ASSERT(mSurface);
+}
+
+DMABUFTextureData::~DMABUFTextureData() = default;
+
+/* static */ DMABUFTextureData* DMABUFTextureData::Create(
+    const IntSize& aSize, SurfaceFormat aFormat, BackendType aBackend) {
+  if (aFormat != SurfaceFormat::B8G8R8A8 &&
+      aFormat != SurfaceFormat::B8G8R8X8) {
+    // TODO
+    NS_WARNING("DMABUFTextureData::Create() - wrong surface format!");
+    return nullptr;
+  }
+
+  int flags = DMABUF_TEXTURE;
+  if (aFormat == SurfaceFormat::B8G8R8A8) {
+    flags |= DMABUF_ALPHA;
+  }
+  RefPtr<DMABufSurface> surf =
+      DMABufSurfaceRGBA::CreateDMABufSurface(aSize.width, aSize.height, flags);
+  if (!surf) {
+    NS_WARNING("DMABUFTextureData::Create() failed!");
+    return nullptr;
+  }
+  return new DMABUFTextureData(surf, aBackend);
+}
+
+TextureData* DMABUFTextureData::CreateSimilar(
+    LayersIPCChannel* aAllocator, LayersBackend aLayersBackend,
+    TextureFlags aFlags, TextureAllocationFlags aAllocFlags) const {
+  return DMABUFTextureData::Create(
+      gfx::IntSize(mSurface->GetWidth(), mSurface->GetHeight()),
+      mSurface->GetFormat(), mBackend);
+}
+
+bool DMABUFTextureData::Serialize(SurfaceDescriptor& aOutDescriptor) {
+  return mSurface->Serialize(aOutDescriptor);
+}
+
+void DMABUFTextureData::GetSubDescriptor(
+    RemoteDecoderVideoSubDescriptor* const aOutDesc) {
+  SurfaceDescriptor desc;
+  if (!mSurface->Serialize(desc)) {
+    return;
+  }
+  *aOutDesc = static_cast<SurfaceDescriptorDMABuf>(desc);
+}
+
+void DMABUFTextureData::FillInfo(TextureData::Info& aInfo) const {
+  aInfo.size = gfx::IntSize(mSurface->GetWidth(), mSurface->GetHeight());
+  aInfo.format = mSurface->GetFormat();
+  aInfo.hasSynchronization = false;
+  aInfo.supportsMoz2D = true;
+  aInfo.canExposeMappedData = false;
+}
+
+bool DMABUFTextureData::Lock(OpenMode) {
+  auto surf = mSurface->GetAsDMABufSurfaceRGBA();
+  MOZ_ASSERT(!surf->IsMapped(), "Already locked?");
+  surf->Map();
+  return true;
+}
+
+void DMABUFTextureData::Unlock() {
+  auto surf = mSurface->GetAsDMABufSurfaceRGBA();
+  MOZ_ASSERT(surf->IsMapped(), "Already unlocked?");
+  surf->Unmap();
+}
+
+already_AddRefed<DataSourceSurface> DMABUFTextureData::GetAsSurface() {
+  // TODO: Update for debug purposes.
+  return nullptr;
+}
+
+already_AddRefed<DrawTarget> DMABUFTextureData::BorrowDrawTarget() {
+  MOZ_ASSERT(mBackend != BackendType::NONE);
+  if (mBackend == BackendType::NONE) {
+    // shouldn't happen, but degrade gracefully
+    return nullptr;
+  }
+  auto surf = mSurface->GetAsDMABufSurfaceRGBA();
+  if (!surf->GetMappedRegion()) {
+    return nullptr;
+  }
+  return Factory::CreateDrawTargetForData(
+      mBackend, (unsigned char*)surf->GetMappedRegion(),
+      IntSize(surf->GetWidth(), surf->GetHeight()),
+      surf->GetMappedRegionStride(), surf->GetFormat(), true);
+}
+
+void DMABUFTextureData::Deallocate(LayersIPCChannel*) { mSurface = nullptr; }
+
+void DMABUFTextureData::Forget(LayersIPCChannel*) { mSurface = nullptr; }
+
+bool DMABUFTextureData::UpdateFromSurface(gfx::SourceSurface* aSurface) {
+  RefPtr<DrawTarget> dt = BorrowDrawTarget();
+  if (!dt) {
+    return false;
+  }
+
+  dt->CopySurface(aSurface, IntRect(IntPoint(), aSurface->GetSize()),
+                  IntPoint());
+  return true;
+}
+
+}  // namespace mozilla::layers