| OLD | NEW |
| (Empty) |
| 1 // Copyright (c) 2011 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 "ui/gfx/surface/transport_dib.h" | |
| 6 | |
| 7 #include <unistd.h> | |
| 8 #include <sys/stat.h> | |
| 9 | |
| 10 #include "base/eintr_wrapper.h" | |
| 11 #include "base/logging.h" | |
| 12 #include "base/memory/scoped_ptr.h" | |
| 13 #include "base/shared_memory.h" | |
| 14 #include "skia/ext/platform_canvas.h" | |
| 15 | |
| 16 TransportDIB::TransportDIB() | |
| 17 : size_(0) { | |
| 18 } | |
| 19 | |
| 20 TransportDIB::TransportDIB(TransportDIB::Handle dib) | |
| 21 : shared_memory_(dib, false /* read write */), | |
| 22 size_(0) { | |
| 23 } | |
| 24 | |
| 25 TransportDIB::~TransportDIB() { | |
| 26 } | |
| 27 | |
| 28 // static | |
| 29 TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { | |
| 30 TransportDIB* dib = new TransportDIB; | |
| 31 // We will use ashmem_get_size_region() to figure out the size in Map(size). | |
| 32 if (!dib->shared_memory_.CreateAndMapAnonymous(size)) { | |
| 33 delete dib; | |
| 34 return NULL; | |
| 35 } | |
| 36 | |
| 37 dib->size_ = size; | |
| 38 return dib; | |
| 39 } | |
| 40 | |
| 41 // static | |
| 42 TransportDIB* TransportDIB::Map(Handle handle) { | |
| 43 scoped_ptr<TransportDIB> dib(CreateWithHandle(handle)); | |
| 44 if (!dib->Map()) | |
| 45 return NULL; | |
| 46 return dib.release(); | |
| 47 } | |
| 48 | |
| 49 // static | |
| 50 TransportDIB* TransportDIB::CreateWithHandle(Handle handle) { | |
| 51 return new TransportDIB(handle); | |
| 52 } | |
| 53 | |
| 54 // static | |
| 55 bool TransportDIB::is_valid_handle(Handle dib) { | |
| 56 return dib.fd >= 0; | |
| 57 } | |
| 58 | |
| 59 // static | |
| 60 bool TransportDIB::is_valid_id(Id id) { | |
| 61 // Same as is_valid_handle(). | |
| 62 return id.fd >= 0; | |
| 63 } | |
| 64 | |
| 65 skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { | |
| 66 if (!memory() && !Map()) | |
| 67 return NULL; | |
| 68 scoped_ptr<skia::PlatformCanvas> canvas(new skia::PlatformCanvas); | |
| 69 if (!canvas->initialize(w, h, true, reinterpret_cast<uint8_t*>(memory()))) { | |
| 70 // TODO(husky): Remove when http://b/issue?id=4233182 is definitely fixed. | |
| 71 LOG(ERROR) << "Failed to initialize canvas of size " << w << "x" << h; | |
| 72 return NULL; | |
| 73 } | |
| 74 return canvas.release(); | |
| 75 } | |
| 76 | |
| 77 bool TransportDIB::Map() { | |
| 78 if (!is_valid_handle(handle())) | |
| 79 return false; | |
| 80 // We will use ashmem_get_size_region() to figure out the size in Map(size). | |
| 81 if (!shared_memory_.Map(0)) | |
| 82 return false; | |
| 83 | |
| 84 // TODO: Note that using created_size() below is a hack. See the comment in | |
| 85 // SharedMemory::Map(). | |
| 86 size_ = shared_memory_.created_size(); | |
| 87 return true; | |
| 88 } | |
| 89 | |
| 90 void* TransportDIB::memory() const { | |
| 91 return shared_memory_.memory(); | |
| 92 } | |
| 93 | |
| 94 TransportDIB::Id TransportDIB::id() const { | |
| 95 // Use FileDescriptor as id. | |
| 96 return shared_memory_.handle(); | |
| 97 } | |
| 98 | |
| 99 TransportDIB::Handle TransportDIB::handle() const { | |
| 100 return shared_memory_.handle(); | |
| 101 } | |
| OLD | NEW |