thestig@chromium.org
431dc5a0d1
TBR=evmar Review URL: http://codereview.chromium.org/149471 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@20406 0039d316-1c4b-4281-b951-d872f2087c98
72 linhas
1.6 KiB
C++
72 linhas
1.6 KiB
C++
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "chrome/common/transport_dib.h"
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#include <unistd.h>
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#include <sys/stat.h>
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#include "base/eintr_wrapper.h"
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#include "base/shared_memory.h"
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#include "skia/ext/platform_canvas.h"
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TransportDIB::TransportDIB()
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: size_(0) {
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}
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TransportDIB::TransportDIB(TransportDIB::Handle dib)
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: shared_memory_(dib, false /* read write */),
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size_(0) {
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}
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TransportDIB::~TransportDIB() {
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}
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// static
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TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) {
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TransportDIB* dib = new TransportDIB;
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if (!dib->shared_memory_.Create(L"", false /* read write */,
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false /* do not open existing */, size)) {
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delete dib;
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return NULL;
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}
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dib->size_ = size;
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return dib;
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}
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// static
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TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) {
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TransportDIB* dib = new TransportDIB(handle);
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struct stat st;
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fstat(handle.fd, &st);
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if (!dib->shared_memory_.Map(st.st_size)) {
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delete dib;
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HANDLE_EINTR(close(handle.fd));
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return false;
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}
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dib->size_ = st.st_size;
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return dib;
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}
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skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) {
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return new skia::PlatformCanvas(w, h, true,
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reinterpret_cast<uint8_t*>(memory()));
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}
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void* TransportDIB::memory() const {
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return shared_memory_.memory();
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}
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TransportDIB::Id TransportDIB::id() const {
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return shared_memory_.id();
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}
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TransportDIB::Handle TransportDIB::handle() const {
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return shared_memory_.handle();
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}
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