tor-browser

The Tor Browser
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RenderSharedSurfaceTextureHost.cpp (2535B)

      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 "RenderSharedSurfaceTextureHost.h"
      8 
      9 #include "mozilla/gfx/Logging.h"
     10 #include "mozilla/layers/ImageDataSerializer.h"
     11 #include "mozilla/layers/SourceSurfaceSharedData.h"
     12 
     13 namespace mozilla {
     14 namespace wr {
     15 
     16 RenderSharedSurfaceTextureHost::RenderSharedSurfaceTextureHost(
     17    gfx::SourceSurfaceSharedDataWrapper* aSurface)
     18    : mSurface(aSurface), mMap(), mLocked(false) {
     19  MOZ_COUNT_CTOR_INHERITED(RenderSharedSurfaceTextureHost, RenderTextureHost);
     20  MOZ_ASSERT(aSurface);
     21 }
     22 
     23 RenderSharedSurfaceTextureHost::~RenderSharedSurfaceTextureHost() {
     24  MOZ_COUNT_DTOR_INHERITED(RenderSharedSurfaceTextureHost, RenderTextureHost);
     25 }
     26 
     27 wr::WrExternalImage RenderSharedSurfaceTextureHost::Lock(uint8_t aChannelIndex,
     28                                                         gl::GLContext* aGL) {
     29  if (!mLocked) {
     30    if (NS_WARN_IF(
     31            !mSurface->Map(gfx::DataSourceSurface::MapType::READ, &mMap))) {
     32      return InvalidToWrExternalImage();
     33    }
     34    mLocked = true;
     35  }
     36 
     37  return RawDataToWrExternalImage(mMap.mData,
     38                                  mMap.mStride * mSurface->GetSize().height);
     39 }
     40 
     41 void RenderSharedSurfaceTextureHost::Unlock() {
     42  if (mLocked) {
     43    mSurface->Unmap();
     44    mLocked = false;
     45  }
     46 }
     47 
     48 size_t RenderSharedSurfaceTextureHost::Bytes() {
     49  return mSurface->Stride() * mSurface->GetSize().height;
     50 }
     51 
     52 size_t RenderSharedSurfaceTextureHost::GetPlaneCount() const { return 1; }
     53 
     54 gfx::SurfaceFormat RenderSharedSurfaceTextureHost::GetFormat() const {
     55  return mSurface->GetFormat();
     56 }
     57 
     58 gfx::ColorDepth RenderSharedSurfaceTextureHost::GetColorDepth() const {
     59  return gfx::ColorDepth::COLOR_8;
     60 }
     61 
     62 bool RenderSharedSurfaceTextureHost::MapPlane(RenderCompositor* aCompositor,
     63                                              uint8_t aChannelIndex,
     64                                              PlaneInfo& aPlaneInfo) {
     65  if (NS_WARN_IF(
     66          !mSurface->Map(gfx::DataSourceSurface::MapType::READ, &mMap))) {
     67    return false;
     68  }
     69  aPlaneInfo.mData = mMap.mData;
     70  aPlaneInfo.mStride = mMap.mStride;
     71  aPlaneInfo.mSize = mSurface->GetSize();
     72  return true;
     73 }
     74 
     75 void RenderSharedSurfaceTextureHost::UnmapPlanes() { mSurface->Unmap(); }
     76 
     77 }  // namespace wr
     78 }  // namespace mozilla