DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Header

Mercurial (d8847129d134)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * 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 "CompositableHost.h"
#include <map>                          // for _Rb_tree_iterator, map, etc
#include <utility>                      // for pair
#include "ContentHost.h"                // for ContentHostDoubleBuffered, etc
#include "Effects.h"                    // for EffectMask, Effect, etc
#include "gfxUtils.h"
#include "ImageHost.h"                  // for ImageHostBuffered, etc
#include "TiledContentHost.h"           // for TiledContentHost
#include "mozilla/layers/LayersSurfaces.h"  // for SurfaceDescriptor
#include "mozilla/layers/TextureHost.h"  // for TextureHost, etc
#include "nsAutoPtr.h"                  // for nsRefPtr
#include "nsDebug.h"                    // for NS_WARNING
#include "nsISupportsImpl.h"            // for MOZ_COUNT_CTOR, etc
#include "gfxPlatform.h"                // for gfxPlatform
#include "mozilla/layers/PCompositableParent.h"

namespace mozilla {
namespace layers {

class Compositor;

/**
 * IPDL actor used by CompositableHost to match with its corresponding
 * CompositableClient on the content side.
 *
 * CompositableParent is owned by the IPDL system. It's deletion is triggered
 * by either the CompositableChild's deletion, or by the IPDL communication
 * goind down.
 */
class CompositableParent : public PCompositableParent
{
public:
  CompositableParent(CompositableParentManager* aMgr,
                     const TextureInfo& aTextureInfo,
                     uint64_t aID = 0)
  {
    MOZ_COUNT_CTOR(CompositableParent);
    mHost = CompositableHost::Create(aTextureInfo);
    mHost->SetAsyncID(aID);
    if (aID) {
      CompositableMap::Set(aID, this);
    }
  }

  ~CompositableParent()
  {
    MOZ_COUNT_DTOR(CompositableParent);
    CompositableMap::Erase(mHost->GetAsyncID());
  }

  virtual void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE
  {
    if (mHost) {
      mHost->Detach(nullptr, CompositableHost::FORCE_DETACH);
    }
  }

  RefPtr<CompositableHost> mHost;
};

CompositableHost::CompositableHost(const TextureInfo& aTextureInfo)
  : mTextureInfo(aTextureInfo)
  , mAsyncID(0)
  , mCompositorID(0)
  , mCompositor(nullptr)
  , mLayer(nullptr)
  , mFlashCounter(0)
  , mAttached(false)
  , mKeepAttached(false)
{
  MOZ_COUNT_CTOR(CompositableHost);
}

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

PCompositableParent*
CompositableHost::CreateIPDLActor(CompositableParentManager* aMgr,
                                  const TextureInfo& aTextureInfo,
                                  uint64_t aID)
{
  return new CompositableParent(aMgr, aTextureInfo, aID);
}

bool
CompositableHost::DestroyIPDLActor(PCompositableParent* aActor)
{
  delete aActor;
  return true;
}

CompositableHost*
CompositableHost::FromIPDLActor(PCompositableParent* aActor)
{
  MOZ_ASSERT(aActor);
  return static_cast<CompositableParent*>(aActor)->mHost;
}

void
CompositableHost::UseTextureHost(TextureHost* aTexture)
{
  if (!aTexture) {
    return;
  }
  if (GetCompositor()) {
    aTexture->SetCompositor(GetCompositor());
  }
}

void
CompositableHost::UseComponentAlphaTextures(TextureHost* aTextureOnBlack,
                                            TextureHost* aTextureOnWhite)
{
  MOZ_ASSERT(aTextureOnBlack && aTextureOnWhite);
  aTextureOnBlack->SetCompositor(GetCompositor());
  aTextureOnWhite->SetCompositor(GetCompositor());
}

void
CompositableHost::RemoveTextureHost(TextureHost* aTexture)
{}

void
CompositableHost::SetCompositor(Compositor* aCompositor)
{
  mCompositor = aCompositor;
}

bool
CompositableHost::AddMaskEffect(EffectChain& aEffects,
                                const gfx::Matrix4x4& aTransform,
                                bool aIs3D)
{
  CompositableTextureSourceRef source;
  RefPtr<TextureHost> host = GetAsTextureHost();

  if (!host) {
    NS_WARNING("Using compositable with no valid TextureHost as mask");
    return false;
  }

  if (!host->Lock()) {
    NS_WARNING("Failed to lock the mask texture");
    return false;
  }

  if (!host->BindTextureSource(source)) {
    NS_WARNING("The TextureHost was successfully locked but can't provide a TextureSource");
    host->Unlock();
    return false;
  }
  MOZ_ASSERT(source);

  RefPtr<EffectMask> effect = new EffectMask(source,
                                             source->GetSize(),
                                             aTransform);
  effect->mIs3D = aIs3D;
  aEffects.mSecondaryEffects[EffectTypes::MASK] = effect;
  return true;
}

void
CompositableHost::RemoveMaskEffect()
{
  RefPtr<TextureHost> host = GetAsTextureHost();
  if (host) {
    host->Unlock();
  }
}

/* static */ TemporaryRef<CompositableHost>
CompositableHost::Create(const TextureInfo& aTextureInfo)
{
  RefPtr<CompositableHost> result;
  switch (aTextureInfo.mCompositableType) {
  case CompositableType::IMAGE_BRIDGE:
    NS_ERROR("Cannot create an image bridge compositable this way");
    break;
  case CompositableType::CONTENT_INC:
    result = new ContentHostIncremental(aTextureInfo);
    break;
  case CompositableType::CONTENT_TILED:
    result = new TiledContentHost(aTextureInfo);
    break;
  case CompositableType::IMAGE:
    result = new ImageHost(aTextureInfo);
    break;
#ifdef MOZ_WIDGET_GONK
  case CompositableType::IMAGE_OVERLAY:
    result = new ImageHostOverlay(aTextureInfo);
    break;
#endif
  case CompositableType::CONTENT_SINGLE:
    result = new ContentHostSingleBuffered(aTextureInfo);
    break;
  case CompositableType::CONTENT_DOUBLE:
    result = new ContentHostDoubleBuffered(aTextureInfo);
    break;
  default:
    NS_ERROR("Unknown CompositableType");
  }
  return result;
}

void
CompositableHost::DumpTextureHost(std::stringstream& aStream, TextureHost* aTexture)
{
  if (!aTexture) {
    return;
  }
  RefPtr<gfx::DataSourceSurface> dSurf = aTexture->GetAsSurface();
  if (!dSurf) {
    return;
  }
  aStream << gfxUtils::GetAsLZ4Base64Str(dSurf).get();
}

namespace CompositableMap {

typedef std::map<uint64_t, PCompositableParent*> CompositableMap_t;
static CompositableMap_t* sCompositableMap = nullptr;
bool IsCreated() {
  return sCompositableMap != nullptr;
}
PCompositableParent* Get(uint64_t aID)
{
  if (!IsCreated() || aID == 0) {
    return nullptr;
  }
  CompositableMap_t::iterator it = sCompositableMap->find(aID);
  if (it == sCompositableMap->end()) {
    return nullptr;
  }
  return it->second;
}
void Set(uint64_t aID, PCompositableParent* aParent)
{
  if (!IsCreated() || aID == 0) {
    return;
  }
  (*sCompositableMap)[aID] = aParent;
}
void Erase(uint64_t aID)
{
  if (!IsCreated() || aID == 0) {
    return;
  }
  CompositableMap_t::iterator it = sCompositableMap->find(aID);
  if (it != sCompositableMap->end()) {
    sCompositableMap->erase(it);
  }
}
void Clear()
{
  if (!IsCreated()) {
    return;
  }
  sCompositableMap->clear();
}
void Create()
{
  if (sCompositableMap == nullptr) {
    sCompositableMap = new CompositableMap_t;
  }
}
void Destroy()
{
  Clear();
  delete sCompositableMap;
  sCompositableMap = nullptr;
}

} // namespace CompositableMap

} // namespace layers
} // namespace mozilla