content/common/cc_messages.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/common/cc_messages.h"
   6
   7 #include "cc/output/compositor_frame.h"
   8 #include "cc/output/filter_operations.h"
   9 #include "cc/quads/largest_draw_quad.h"
  10 #include "content/public/common/common_param_traits.h"
  11 #include "third_party/skia/include/core/SkData.h"
  12 #include "third_party/skia/include/core/SkFlattenableSerialization.h"
  13 #include "ui/gfx/transform.h"
  14
  15 namespace IPC {
  16
  17 void ParamTraits<cc::FilterOperation>::Write(
  18     Message* m, const param_type& p) {
  19   WriteParam(m, p.type());
  20   switch (p.type()) {
  21     case cc::FilterOperation::GRAYSCALE:
  22     case cc::FilterOperation::SEPIA:
  23     case cc::FilterOperation::SATURATE:
  24     case cc::FilterOperation::HUE_ROTATE:
  25     case cc::FilterOperation::INVERT:
  26     case cc::FilterOperation::BRIGHTNESS:
  27     case cc::FilterOperation::SATURATING_BRIGHTNESS:
  28     case cc::FilterOperation::CONTRAST:
  29     case cc::FilterOperation::OPACITY:
  30     case cc::FilterOperation::BLUR:
  31       WriteParam(m, p.amount());
  32       break;
  33     case cc::FilterOperation::DROP_SHADOW:
  34       WriteParam(m, p.drop_shadow_offset());
  35       WriteParam(m, p.amount());
  36       WriteParam(m, p.drop_shadow_color());
  37       break;
  38     case cc::FilterOperation::COLOR_MATRIX:
  39       for (int i = 0; i < 20; ++i)
  40         WriteParam(m, p.matrix()[i]);
  41       break;
  42     case cc::FilterOperation::ZOOM:
  43       WriteParam(m, p.amount());
  44       WriteParam(m, p.zoom_inset());
  45       break;
  46     case cc::FilterOperation::REFERENCE:
  47       WriteParam(m, p.image_filter());
  48       break;
  49     case cc::FilterOperation::ALPHA_THRESHOLD:
  50       NOTREACHED();
  51       break;
  52   }
  53 }
  54
  55 bool ParamTraits<cc::FilterOperation>::Read(
  56     const Message* m, PickleIterator* iter, param_type* r) {
  57   cc::FilterOperation::FilterType type;
  58   float amount;
  59   gfx::Point drop_shadow_offset;
  60   SkColor drop_shadow_color;
  61   SkScalar matrix[20];
  62   int zoom_inset;
  63
  64   if (!ReadParam(m, iter, &type))
  65     return false;
  66   r->set_type(type);
  67
  68   bool success = false;
  69   switch (type) {
  70     case cc::FilterOperation::GRAYSCALE:
  71     case cc::FilterOperation::SEPIA:
  72     case cc::FilterOperation::SATURATE:
  73     case cc::FilterOperation::HUE_ROTATE:
  74     case cc::FilterOperation::INVERT:
  75     case cc::FilterOperation::BRIGHTNESS:
  76     case cc::FilterOperation::SATURATING_BRIGHTNESS:
  77     case cc::FilterOperation::CONTRAST:
  78     case cc::FilterOperation::OPACITY:
  79     case cc::FilterOperation::BLUR:
  80       if (ReadParam(m, iter, &amount)) {
  81         r->set_amount(amount);
  82         success = true;
  83       }
  84       break;
  85     case cc::FilterOperation::DROP_SHADOW:
  86       if (ReadParam(m, iter, &drop_shadow_offset) &&
  87           ReadParam(m, iter, &amount) &&
  88           ReadParam(m, iter, &drop_shadow_color)) {
  89         r->set_drop_shadow_offset(drop_shadow_offset);
  90         r->set_amount(amount);
  91         r->set_drop_shadow_color(drop_shadow_color);
  92         success = true;
  93       }
  94       break;
  95     case cc::FilterOperation::COLOR_MATRIX: {
  96       int i;
  97       for (i = 0; i < 20; ++i) {
  98         if (!ReadParam(m, iter, &matrix[i]))
  99           break;
 100       }
 101       if (i == 20) {
 102         r->set_matrix(matrix);
 103         success = true;
 104       }
 105       break;
 106     }
 107     case cc::FilterOperation::ZOOM:
 108       if (ReadParam(m, iter, &amount) &&
 109           ReadParam(m, iter, &zoom_inset) &&
 110           amount >= 0.f &&
 111           zoom_inset >= 0) {
 112         r->set_amount(amount);
 113         r->set_zoom_inset(zoom_inset);
 114         success = true;
 115       }
 116       break;
 117     case cc::FilterOperation::REFERENCE: {
 118       skia::RefPtr<SkImageFilter> filter;
 119       if (!ReadParam(m, iter, &filter)) {
 120         success = false;
 121         break;
 122       }
 123       r->set_image_filter(filter);
 124       success = true;
 125       break;
 126     }
 127     case cc::FilterOperation::ALPHA_THRESHOLD:
 128       break;
 129   }
 130   return success;
 131 }
 132
 133 void ParamTraits<cc::FilterOperation>::Log(
 134     const param_type& p, std::string* l) {
 135   l->append("(");
 136   LogParam(static_cast<unsigned>(p.type()), l);
 137   l->append(", ");
 138
 139   switch (p.type()) {
 140     case cc::FilterOperation::GRAYSCALE:
 141     case cc::FilterOperation::SEPIA:
 142     case cc::FilterOperation::SATURATE:
 143     case cc::FilterOperation::HUE_ROTATE:
 144     case cc::FilterOperation::INVERT:
 145     case cc::FilterOperation::BRIGHTNESS:
 146     case cc::FilterOperation::SATURATING_BRIGHTNESS:
 147     case cc::FilterOperation::CONTRAST:
 148     case cc::FilterOperation::OPACITY:
 149     case cc::FilterOperation::BLUR:
 150       LogParam(p.amount(), l);
 151       break;
 152     case cc::FilterOperation::DROP_SHADOW:
 153       LogParam(p.drop_shadow_offset(), l);
 154       l->append(", ");
 155       LogParam(p.amount(), l);
 156       l->append(", ");
 157       LogParam(p.drop_shadow_color(), l);
 158       break;
 159     case cc::FilterOperation::COLOR_MATRIX:
 160       for (int i = 0; i < 20; ++i) {
 161         if (i)
 162           l->append(", ");
 163         LogParam(p.matrix()[i], l);
 164       }
 165       break;
 166     case cc::FilterOperation::ZOOM:
 167       LogParam(p.amount(), l);
 168       l->append(", ");
 169       LogParam(p.zoom_inset(), l);
 170       break;
 171     case cc::FilterOperation::REFERENCE:
 172       LogParam(p.image_filter(), l);
 173       break;
 174     case cc::FilterOperation::ALPHA_THRESHOLD:
 175       NOTREACHED();
 176       break;
 177   }
 178   l->append(")");
 179 }
 180
 181 void ParamTraits<cc::FilterOperations>::Write(
 182     Message* m, const param_type& p) {
 183   WriteParam(m, p.size());
 184   for (std::size_t i = 0; i < p.size(); ++i) {
 185     WriteParam(m, p.at(i));
 186   }
 187 }
 188
 189 bool ParamTraits<cc::FilterOperations>::Read(
 190     const Message* m, PickleIterator* iter, param_type* r) {
 191   size_t count;
 192   if (!ReadParam(m, iter, &count))
 193     return false;
 194
 195   for (std::size_t i = 0; i < count; ++i) {
 196     cc::FilterOperation op = cc::FilterOperation::CreateEmptyFilter();
 197     if (!ReadParam(m, iter, &op))
 198       return false;
 199     r->Append(op);
 200   }
 201   return true;
 202 }
 203
 204 void ParamTraits<cc::FilterOperations>::Log(
 205     const param_type& p, std::string* l) {
 206   l->append("(");
 207   for (std::size_t i = 0; i < p.size(); ++i) {
 208     if (i)
 209       l->append(", ");
 210     LogParam(p.at(i), l);
 211   }
 212   l->append(")");
 213 }
 214
 215 void ParamTraits<skia::RefPtr<SkImageFilter> >::Write(
 216     Message* m, const param_type& p) {
 217   SkImageFilter* filter = p.get();
 218   if (filter) {
 219     skia::RefPtr<SkData> data =
 220         skia::AdoptRef(SkValidatingSerializeFlattenable(filter));
 221     m->WriteData(static_cast<const char*>(data->data()), data->size());
 222   } else {
 223     m->WriteData(0, 0);
 224   }
 225 }
 226
 227 bool ParamTraits<skia::RefPtr<SkImageFilter> >::Read(
 228     const Message* m, PickleIterator* iter, param_type* r) {
 229   const char* data = 0;
 230   int length = 0;
 231   if (!iter->ReadData(&data, &length))
 232     return false;
 233   if (length > 0) {
 234     SkFlattenable* flattenable = SkValidatingDeserializeFlattenable(
 235         data, length, SkImageFilter::GetFlattenableType());
 236     *r = skia::AdoptRef(static_cast<SkImageFilter*>(flattenable));
 237   } else {
 238     r->clear();
 239   }
 240   return true;
 241 }
 242
 243 void ParamTraits<skia::RefPtr<SkImageFilter> >::Log(
 244     const param_type& p, std::string* l) {
 245   l->append("(");
 246   LogParam(p.get() ? p->countInputs() : 0, l);
 247   l->append(")");
 248 }
 249
 250 void ParamTraits<gfx::Transform>::Write(
 251     Message* m, const param_type& p) {
 252 #ifdef SK_MSCALAR_IS_FLOAT
 253   float column_major_data[16];
 254   p.matrix().asColMajorf(column_major_data);
 255 #else
 256   double column_major_data[16];
 257   p.matrix().asColMajord(column_major_data);
 258 #endif
 259   m->WriteBytes(&column_major_data, sizeof(SkMScalar) * 16);
 260 }
 261
 262 bool ParamTraits<gfx::Transform>::Read(
 263     const Message* m, PickleIterator* iter, param_type* r) {
 264   const char* column_major_data;
 265   if (!iter->ReadBytes(&column_major_data, sizeof(SkMScalar) * 16))
 266     return false;
 267   r->matrix().setColMajor(
 268       reinterpret_cast<const SkMScalar*>(column_major_data));
 269   return true;
 270 }
 271
 272 void ParamTraits<gfx::Transform>::Log(
 273     const param_type& p, std::string* l) {
 274 #ifdef SK_MSCALAR_IS_FLOAT
 275   float row_major_data[16];
 276   p.matrix().asRowMajorf(row_major_data);
 277 #else
 278   double row_major_data[16];
 279   p.matrix().asRowMajord(row_major_data);
 280 #endif
 281   l->append("(");
 282   for (int i = 0; i < 16; ++i) {
 283     if (i > 0)
 284       l->append(", ");
 285     LogParam(row_major_data[i], l);
 286   }
 287   l->append(") ");
 288 }
 289
 290 void ParamTraits<cc::RenderPass>::Write(
 291     Message* m, const param_type& p) {
 292   WriteParam(m, p.id);
 293   WriteParam(m, p.output_rect);
 294   WriteParam(m, p.damage_rect);
 295   WriteParam(m, p.transform_to_root_target);
 296   WriteParam(m, p.has_transparent_background);
 297   WriteParam(m, p.quad_list.size());
 298
 299   cc::SharedQuadStateList::ConstIterator shared_quad_state_iter =
 300       p.shared_quad_state_list.begin();
 301   cc::SharedQuadStateList::ConstIterator last_shared_quad_state_iter =
 302       p.shared_quad_state_list.end();
 303   for (const auto& quad : p.quad_list) {
 304     DCHECK(quad->rect.Contains(quad->visible_rect))
 305         << quad->material << " rect: " << quad->rect.ToString()
 306         << " visible_rect: " << quad->visible_rect.ToString();
 307     DCHECK(quad->opaque_rect.IsEmpty() ||
 308            quad->rect.Contains(quad->opaque_rect))
 309         << quad->material << " rect: " << quad->rect.ToString()
 310         << " opaque_rect: " << quad->opaque_rect.ToString();
 311
 312     switch (quad->material) {
 313       case cc::DrawQuad::CHECKERBOARD:
 314         WriteParam(m, *cc::CheckerboardDrawQuad::MaterialCast(quad));
 315         break;
 316       case cc::DrawQuad::DEBUG_BORDER:
 317         WriteParam(m, *cc::DebugBorderDrawQuad::MaterialCast(quad));
 318         break;
 319       case cc::DrawQuad::IO_SURFACE_CONTENT:
 320         WriteParam(m, *cc::IOSurfaceDrawQuad::MaterialCast(quad));
 321         break;
 322       case cc::DrawQuad::PICTURE_CONTENT:
 323         NOTREACHED();
 324         break;
 325       case cc::DrawQuad::TEXTURE_CONTENT:
 326         WriteParam(m, *cc::TextureDrawQuad::MaterialCast(quad));
 327         break;
 328       case cc::DrawQuad::RENDER_PASS:
 329         WriteParam(m, *cc::RenderPassDrawQuad::MaterialCast(quad));
 330         break;
 331       case cc::DrawQuad::SOLID_COLOR:
 332         WriteParam(m, *cc::SolidColorDrawQuad::MaterialCast(quad));
 333         break;
 334       case cc::DrawQuad::SURFACE_CONTENT:
 335         WriteParam(m, *cc::SurfaceDrawQuad::MaterialCast(quad));
 336         break;
 337       case cc::DrawQuad::TILED_CONTENT:
 338         WriteParam(m, *cc::TileDrawQuad::MaterialCast(quad));
 339         break;
 340       case cc::DrawQuad::STREAM_VIDEO_CONTENT:
 341         WriteParam(m, *cc::StreamVideoDrawQuad::MaterialCast(quad));
 342         break;
 343       case cc::DrawQuad::YUV_VIDEO_CONTENT:
 344         WriteParam(m, *cc::YUVVideoDrawQuad::MaterialCast(quad));
 345         break;
 346       case cc::DrawQuad::INVALID:
 347         break;
 348     }
 349
 350     // Null shared quad states should not occur.
 351     DCHECK(quad->shared_quad_state);
 352
 353     // SharedQuadStates should appear in the order they are used by DrawQuads.
 354     // Find the SharedQuadState for this DrawQuad.
 355     while (shared_quad_state_iter != p.shared_quad_state_list.end() &&
 356            quad->shared_quad_state != *shared_quad_state_iter)
 357       ++shared_quad_state_iter;
 358
 359     DCHECK(shared_quad_state_iter != p.shared_quad_state_list.end());
 360
 361     if (shared_quad_state_iter != last_shared_quad_state_iter) {
 362       WriteParam(m, true);
 363       WriteParam(m, **shared_quad_state_iter);
 364       last_shared_quad_state_iter = shared_quad_state_iter;
 365     } else {
 366       WriteParam(m, false);
 367     }
 368   }
 369 }
 370
 371 static size_t ReserveSizeForRenderPassWrite(const cc::RenderPass& p) {
 372   size_t to_reserve = sizeof(cc::RenderPass);
 373
 374   // Whether the quad points to a new shared quad state for each quad.
 375   to_reserve += p.quad_list.size() * sizeof(bool);
 376
 377   // Shared quad state is only written when a quad contains a shared quad state
 378   // that has not been written.
 379   to_reserve += p.shared_quad_state_list.size() * sizeof(cc::SharedQuadState);
 380
 381   // The largest quad type, verified by a unit test.
 382   to_reserve += p.quad_list.size() * cc::LargestDrawQuadSize();
 383   return to_reserve;
 384 }
 385
 386 template <typename QuadType>
 387 static cc::DrawQuad* ReadDrawQuad(const Message* m,
 388                                   PickleIterator* iter,
 389                                   cc::RenderPass* render_pass) {
 390   QuadType* quad = render_pass->CreateAndAppendDrawQuad<QuadType>();
 391   if (!ReadParam(m, iter, quad))
 392     return NULL;
 393   return quad;
 394 }
 395
 396 bool ParamTraits<cc::RenderPass>::Read(
 397     const Message* m, PickleIterator* iter, param_type* p) {
 398   cc::RenderPassId id(-1, -1);
 399   gfx::Rect output_rect;
 400   gfx::Rect damage_rect;
 401   gfx::Transform transform_to_root_target;
 402   bool has_transparent_background;
 403   size_t quad_list_size;
 404
 405   if (!ReadParam(m, iter, &id) ||
 406       !ReadParam(m, iter, &output_rect) ||
 407       !ReadParam(m, iter, &damage_rect) ||
 408       !ReadParam(m, iter, &transform_to_root_target) ||
 409       !ReadParam(m, iter, &has_transparent_background) ||
 410       !ReadParam(m, iter, &quad_list_size))
 411     return false;
 412
 413   p->SetAll(id,
 414             output_rect,
 415             damage_rect,
 416             transform_to_root_target,
 417             has_transparent_background);
 418
 419   for (size_t i = 0; i < quad_list_size; ++i) {
 420     cc::DrawQuad::Material material;
 421     PickleIterator temp_iter = *iter;
 422     if (!ReadParam(m, &temp_iter, &material))
 423       return false;
 424
 425     cc::DrawQuad* draw_quad = NULL;
 426     switch (material) {
 427       case cc::DrawQuad::CHECKERBOARD:
 428         draw_quad = ReadDrawQuad<cc::CheckerboardDrawQuad>(m, iter, p);
 429         break;
 430       case cc::DrawQuad::DEBUG_BORDER:
 431         draw_quad = ReadDrawQuad<cc::DebugBorderDrawQuad>(m, iter, p);
 432         break;
 433       case cc::DrawQuad::IO_SURFACE_CONTENT:
 434         draw_quad = ReadDrawQuad<cc::IOSurfaceDrawQuad>(m, iter, p);
 435         break;
 436       case cc::DrawQuad::PICTURE_CONTENT:
 437         NOTREACHED();
 438         return false;
 439       case cc::DrawQuad::SURFACE_CONTENT:
 440         draw_quad = ReadDrawQuad<cc::SurfaceDrawQuad>(m, iter, p);
 441         break;
 442       case cc::DrawQuad::TEXTURE_CONTENT:
 443         draw_quad = ReadDrawQuad<cc::TextureDrawQuad>(m, iter, p);
 444         break;
 445       case cc::DrawQuad::RENDER_PASS:
 446         draw_quad = ReadDrawQuad<cc::RenderPassDrawQuad>(m, iter, p);
 447         break;
 448       case cc::DrawQuad::SOLID_COLOR:
 449         draw_quad = ReadDrawQuad<cc::SolidColorDrawQuad>(m, iter, p);
 450         break;
 451       case cc::DrawQuad::TILED_CONTENT:
 452         draw_quad = ReadDrawQuad<cc::TileDrawQuad>(m, iter, p);
 453         break;
 454       case cc::DrawQuad::STREAM_VIDEO_CONTENT:
 455         draw_quad = ReadDrawQuad<cc::StreamVideoDrawQuad>(m, iter, p);
 456         break;
 457       case cc::DrawQuad::YUV_VIDEO_CONTENT:
 458         draw_quad = ReadDrawQuad<cc::YUVVideoDrawQuad>(m, iter, p);
 459         break;
 460       case cc::DrawQuad::INVALID:
 461         break;
 462     }
 463     if (!draw_quad)
 464       return false;
 465     if (!draw_quad->rect.Contains(draw_quad->visible_rect)) {
 466       LOG(ERROR) << "Quad with invalid visible rect " << draw_quad->material
 467                  << " rect: " << draw_quad->rect.ToString()
 468                  << " visible_rect: " << draw_quad->visible_rect.ToString();
 469       return false;
 470     }
 471     if (!draw_quad->opaque_rect.IsEmpty() &&
 472         !draw_quad->rect.Contains(draw_quad->opaque_rect)) {
 473       LOG(ERROR) << "Quad with invalid opaque rect " << draw_quad->material
 474                  << " rect: " << draw_quad->rect.ToString()
 475                  << " opaque_rect: " << draw_quad->opaque_rect.ToString();
 476       return false;
 477     }
 478
 479     bool has_new_shared_quad_state;
 480     if (!ReadParam(m, iter, &has_new_shared_quad_state))
 481       return false;
 482
 483     // If the quad has a new shared quad state, read it in.
 484     if (has_new_shared_quad_state) {
 485       cc::SharedQuadState* state = p->CreateAndAppendSharedQuadState();
 486       if (!ReadParam(m, iter, state))
 487         return false;
 488     }
 489
 490     draw_quad->shared_quad_state = p->shared_quad_state_list.back();
 491   }
 492
 493   return true;
 494 }
 495
 496 void ParamTraits<cc::RenderPass>::Log(
 497     const param_type& p, std::string* l) {
 498   l->append("RenderPass((");
 499   LogParam(p.id, l);
 500   l->append("), ");
 501   LogParam(p.output_rect, l);
 502   l->append(", ");
 503   LogParam(p.damage_rect, l);
 504   l->append(", ");
 505   LogParam(p.transform_to_root_target, l);
 506   l->append(", ");
 507   LogParam(p.has_transparent_background, l);
 508   l->append(", ");
 509
 510   l->append("[");
 511   for (const auto& shared_quad_state : p.shared_quad_state_list) {
 512     if (shared_quad_state != p.shared_quad_state_list.front())
 513       l->append(", ");
 514     LogParam(*shared_quad_state, l);
 515   }
 516   l->append("], [");
 517   for (const auto& quad : p.quad_list) {
 518     if (quad != p.quad_list.front())
 519       l->append(", ");
 520     switch (quad->material) {
 521       case cc::DrawQuad::CHECKERBOARD:
 522         LogParam(*cc::CheckerboardDrawQuad::MaterialCast(quad), l);
 523         break;
 524       case cc::DrawQuad::DEBUG_BORDER:
 525         LogParam(*cc::DebugBorderDrawQuad::MaterialCast(quad), l);
 526         break;
 527       case cc::DrawQuad::IO_SURFACE_CONTENT:
 528         LogParam(*cc::IOSurfaceDrawQuad::MaterialCast(quad), l);
 529         break;
 530       case cc::DrawQuad::PICTURE_CONTENT:
 531         NOTREACHED();
 532         break;
 533       case cc::DrawQuad::TEXTURE_CONTENT:
 534         LogParam(*cc::TextureDrawQuad::MaterialCast(quad), l);
 535         break;
 536       case cc::DrawQuad::RENDER_PASS:
 537         LogParam(*cc::RenderPassDrawQuad::MaterialCast(quad), l);
 538         break;
 539       case cc::DrawQuad::SOLID_COLOR:
 540         LogParam(*cc::SolidColorDrawQuad::MaterialCast(quad), l);
 541         break;
 542       case cc::DrawQuad::SURFACE_CONTENT:
 543         LogParam(*cc::SurfaceDrawQuad::MaterialCast(quad), l);
 544         break;
 545       case cc::DrawQuad::TILED_CONTENT:
 546         LogParam(*cc::TileDrawQuad::MaterialCast(quad), l);
 547         break;
 548       case cc::DrawQuad::STREAM_VIDEO_CONTENT:
 549         LogParam(*cc::StreamVideoDrawQuad::MaterialCast(quad), l);
 550         break;
 551       case cc::DrawQuad::YUV_VIDEO_CONTENT:
 552         LogParam(*cc::YUVVideoDrawQuad::MaterialCast(quad), l);
 553         break;
 554       case cc::DrawQuad::INVALID:
 555         break;
 556     }
 557   }
 558   l->append("])");
 559 }
 560
 561 namespace {
 562   enum CompositorFrameType {
 563     NO_FRAME,
 564     DELEGATED_FRAME,
 565     GL_FRAME,
 566     SOFTWARE_FRAME,
 567   };
 568 }
 569
 570 void ParamTraits<cc::CompositorFrame>::Write(Message* m,
 571                                              const param_type& p) {
 572   WriteParam(m, p.metadata);
 573   if (p.delegated_frame_data) {
 574     DCHECK(!p.gl_frame_data);
 575     DCHECK(!p.software_frame_data);
 576     WriteParam(m, static_cast<int>(DELEGATED_FRAME));
 577     WriteParam(m, *p.delegated_frame_data);
 578   } else if (p.gl_frame_data) {
 579     DCHECK(!p.software_frame_data);
 580     WriteParam(m, static_cast<int>(GL_FRAME));
 581     WriteParam(m, *p.gl_frame_data);
 582   } else if (p.software_frame_data) {
 583     WriteParam(m, static_cast<int>(SOFTWARE_FRAME));
 584     WriteParam(m, *p.software_frame_data);
 585   } else {
 586     WriteParam(m, static_cast<int>(NO_FRAME));
 587   }
 588 }
 589
 590 bool ParamTraits<cc::CompositorFrame>::Read(const Message* m,
 591                                             PickleIterator* iter,
 592                                             param_type* p) {
 593   if (!ReadParam(m, iter, &p->metadata))
 594     return false;
 595
 596   int compositor_frame_type;
 597   if (!ReadParam(m, iter, &compositor_frame_type))
 598     return false;
 599
 600   switch (compositor_frame_type) {
 601     case DELEGATED_FRAME:
 602       p->delegated_frame_data.reset(new cc::DelegatedFrameData());
 603       if (!ReadParam(m, iter, p->delegated_frame_data.get()))
 604         return false;
 605       break;
 606     case GL_FRAME:
 607       p->gl_frame_data.reset(new cc::GLFrameData());
 608       if (!ReadParam(m, iter, p->gl_frame_data.get()))
 609         return false;
 610       break;
 611     case SOFTWARE_FRAME:
 612       p->software_frame_data.reset(new cc::SoftwareFrameData());
 613       if (!ReadParam(m, iter, p->software_frame_data.get()))
 614         return false;
 615       break;
 616     case NO_FRAME:
 617       break;
 618     default:
 619       return false;
 620   }
 621   return true;
 622 }
 623
 624 void ParamTraits<cc::CompositorFrame>::Log(const param_type& p,
 625                                            std::string* l) {
 626   l->append("CompositorFrame(");
 627   LogParam(p.metadata, l);
 628   l->append(", ");
 629   if (p.delegated_frame_data)
 630     LogParam(*p.delegated_frame_data, l);
 631   else if (p.gl_frame_data)
 632     LogParam(*p.gl_frame_data, l);
 633   else if (p.software_frame_data)
 634     LogParam(*p.software_frame_data, l);
 635   l->append(")");
 636 }
 637
 638 void ParamTraits<cc::CompositorFrameAck>::Write(Message* m,
 639                                                 const param_type& p) {
 640   WriteParam(m, p.resources);
 641   WriteParam(m, p.last_software_frame_id);
 642   if (p.gl_frame_data) {
 643     WriteParam(m, static_cast<int>(GL_FRAME));
 644     WriteParam(m, *p.gl_frame_data);
 645   } else {
 646     WriteParam(m, static_cast<int>(NO_FRAME));
 647   }
 648 }
 649
 650 bool ParamTraits<cc::CompositorFrameAck>::Read(const Message* m,
 651                                                PickleIterator* iter,
 652                                                param_type* p) {
 653   if (!ReadParam(m, iter, &p->resources))
 654     return false;
 655
 656   if (!ReadParam(m, iter, &p->last_software_frame_id))
 657     return false;
 658
 659   int compositor_frame_type;
 660   if (!ReadParam(m, iter, &compositor_frame_type))
 661     return false;
 662
 663   switch (compositor_frame_type) {
 664     case NO_FRAME:
 665       break;
 666     case GL_FRAME:
 667       p->gl_frame_data.reset(new cc::GLFrameData());
 668       if (!ReadParam(m, iter, p->gl_frame_data.get()))
 669         return false;
 670       break;
 671     default:
 672       return false;
 673   }
 674   return true;
 675 }
 676
 677 void ParamTraits<cc::CompositorFrameAck>::Log(const param_type& p,
 678                                               std::string* l) {
 679   l->append("CompositorFrameAck(");
 680   LogParam(p.resources, l);
 681   l->append(", ");
 682   LogParam(p.last_software_frame_id, l);
 683   l->append(", ");
 684   if (p.gl_frame_data)
 685     LogParam(*p.gl_frame_data, l);
 686   l->append(")");
 687 }
 688
 689 void ParamTraits<cc::DelegatedFrameData>::Write(Message* m,
 690                                                 const param_type& p) {
 691   DCHECK_NE(0u, p.render_pass_list.size());
 692
 693   size_t to_reserve = sizeof(p.device_scale_factor);
 694   to_reserve += p.resource_list.size() * sizeof(cc::TransferableResource);
 695   for (size_t i = 0; i < p.render_pass_list.size(); ++i) {
 696     const cc::RenderPass* pass = p.render_pass_list[i];
 697     to_reserve += sizeof(size_t) * 2;
 698     to_reserve += ReserveSizeForRenderPassWrite(*pass);
 699   }
 700   m->Reserve(to_reserve);
 701
 702   WriteParam(m, p.device_scale_factor);
 703   WriteParam(m, p.resource_list);
 704   WriteParam(m, p.render_pass_list.size());
 705   for (size_t i = 0; i < p.render_pass_list.size(); ++i) {
 706     WriteParam(m, p.render_pass_list[i]->quad_list.size());
 707     WriteParam(m, p.render_pass_list[i]->shared_quad_state_list.size());
 708     WriteParam(m, *p.render_pass_list[i]);
 709   }
 710 }
 711
 712 bool ParamTraits<cc::DelegatedFrameData>::Read(const Message* m,
 713                                                PickleIterator* iter,
 714                                                param_type* p) {
 715   if (!ReadParam(m, iter, &p->device_scale_factor))
 716     return false;
 717
 718   const static size_t kMaxRenderPasses = 10000;
 719   const static size_t kMaxSharedQuadStateListSize = 100000;
 720   const static size_t kMaxQuadListSize = 1000000;
 721
 722   size_t num_render_passes;
 723   if (!ReadParam(m, iter, &p->resource_list) ||
 724       !ReadParam(m, iter, &num_render_passes) ||
 725       num_render_passes > kMaxRenderPasses || num_render_passes == 0)
 726     return false;
 727   for (size_t i = 0; i < num_render_passes; ++i) {
 728     size_t quad_list_size;
 729     size_t shared_quad_state_list_size;
 730     if (!ReadParam(m, iter, &quad_list_size) ||
 731         !ReadParam(m, iter, &shared_quad_state_list_size) ||
 732         quad_list_size > kMaxQuadListSize ||
 733         shared_quad_state_list_size > kMaxSharedQuadStateListSize)
 734       return false;
 735     scoped_ptr<cc::RenderPass> render_pass =
 736         cc::RenderPass::Create(shared_quad_state_list_size, quad_list_size);
 737     if (!ReadParam(m, iter, render_pass.get()))
 738       return false;
 739     p->render_pass_list.push_back(render_pass.Pass());
 740   }
 741   return true;
 742 }
 743
 744 void ParamTraits<cc::DelegatedFrameData>::Log(const param_type& p,
 745                                               std::string* l) {
 746   l->append("DelegatedFrameData(");
 747   LogParam(p.device_scale_factor, l);
 748   LogParam(p.resource_list, l);
 749   l->append(", [");
 750   for (size_t i = 0; i < p.render_pass_list.size(); ++i) {
 751     if (i)
 752       l->append(", ");
 753     LogParam(*p.render_pass_list[i], l);
 754   }
 755   l->append("])");
 756 }
 757
 758 void ParamTraits<cc::SoftwareFrameData>::Write(Message* m,
 759                                                const param_type& p) {
 760   DCHECK(cc::SharedBitmap::VerifySizeInBytes(p.size));
 761
 762   m->Reserve(sizeof(cc::SoftwareFrameData));
 763   WriteParam(m, p.id);
 764   WriteParam(m, p.size);
 765   WriteParam(m, p.damage_rect);
 766   WriteParam(m, p.bitmap_id);
 767 }
 768
 769 bool ParamTraits<cc::SoftwareFrameData>::Read(const Message* m,
 770                                               PickleIterator* iter,
 771                                               param_type* p) {
 772   if (!ReadParam(m, iter, &p->id))
 773     return false;
 774   if (!ReadParam(m, iter, &p->size) ||
 775       !cc::SharedBitmap::VerifySizeInBytes(p->size))
 776     return false;
 777   if (!ReadParam(m, iter, &p->damage_rect))
 778     return false;
 779   if (!ReadParam(m, iter, &p->bitmap_id))
 780     return false;
 781   return true;
 782 }
 783
 784 void ParamTraits<cc::SoftwareFrameData>::Log(const param_type& p,
 785                                              std::string* l) {
 786   l->append("SoftwareFrameData(");
 787   LogParam(p.id, l);
 788   l->append(", ");
 789   LogParam(p.size, l);
 790   l->append(", ");
 791   LogParam(p.damage_rect, l);
 792   l->append(", ");
 793   LogParam(p.bitmap_id, l);
 794   l->append(")");
 795 }
 796
 797 }  // namespace IPC