15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/surface/transport_dib.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/stat.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <unistd.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 12c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "base/memory/shared_memory.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "skia/ext/platform_canvas.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB::TransportDIB() 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : size_(0) { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB::TransportDIB(TransportDIB::Handle dib) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : shared_memory_(dib, false /* read write */), 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_(0) { 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB::~TransportDIB() { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) TransportDIB* dib = new TransportDIB; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dib->shared_memory_.CreateAndMapAnonymous(size)) { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete dib; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) dib->size_ = size; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return dib; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB* TransportDIB::Map(Handle handle) { 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<TransportDIB> dib(CreateWithHandle(handle)); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!dib->Map()) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return dib.release(); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB* TransportDIB::CreateWithHandle(Handle handle) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return new TransportDIB(handle); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool TransportDIB::is_valid_handle(Handle dib) { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return dib.fd >= 0; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool TransportDIB::is_valid_id(Id id) { 59c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_ANDROID) 60c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return is_valid_handle(id); 61c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return id != 0; 63c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { 67c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if ((!memory() && !Map()) || !VerifyCanvasSize(w, h)) 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return skia::CreatePlatformCanvas(w, h, true, 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) reinterpret_cast<uint8_t*>(memory()), 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) skia::RETURN_NULL_ON_FAILURE); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool TransportDIB::Map() { 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!is_valid_handle(handle())) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 77c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_ANDROID) 78c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!shared_memory_.Map(0)) 79c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return false; 80c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) size_ = shared_memory_.mapped_size(); 81c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (memory()) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct stat st; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((fstat(shared_memory_.handle().fd, &st) != 0) || 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (!shared_memory_.Map(st.st_size))) { 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_ = st.st_size; 92c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void* TransportDIB::memory() const { 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shared_memory_.memory(); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB::Id TransportDIB::id() const { 101c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#if defined(OS_ANDROID) 102c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return handle(); 103c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#else 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shared_memory_.id(); 105c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)TransportDIB::Handle TransportDIB::handle() const { 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shared_memory_.handle(); 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 111