3d34f66292
R=alexeypa@chromium.org, wez@chromium.org Review URL: https://webrtc-codereview.appspot.com/1586005 git-svn-id: http://webrtc.googlecode.com/svn/trunk@4175 4adac7df-926f-26a2-2b94-8c16560cd09d
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/desktop_capture/shared_desktop_frame.h"
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#include "webrtc/system_wrappers/interface/atomic32.h"
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#include "webrtc/system_wrappers/interface/scoped_ptr.h"
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namespace webrtc {
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class SharedDesktopFrame::Core {
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public:
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Core(DesktopFrame* frame) : frame_(frame) {}
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DesktopFrame* frame() { return frame_.get(); }
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bool HasOneRef() { return ref_count_.Value() == 1; }
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virtual int32_t AddRef() {
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return ++ref_count_;
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}
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virtual int32_t Release() {
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int32_t ref_count;
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ref_count = --ref_count_;
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if (ref_count == 0)
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delete this;
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return ref_count;
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}
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private:
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virtual ~Core() {}
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Atomic32 ref_count_;
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scoped_ptr<DesktopFrame> frame_;
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DISALLOW_COPY_AND_ASSIGN(Core);
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};
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SharedDesktopFrame::~SharedDesktopFrame() {}
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// static
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SharedDesktopFrame* SharedDesktopFrame::Wrap(
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DesktopFrame* desktop_frame) {
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scoped_refptr<Core> core(new Core(desktop_frame));
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return new SharedDesktopFrame(core);
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}
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DesktopFrame* SharedDesktopFrame::GetUnderlyingFrame() {
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return core_->frame();
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}
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SharedDesktopFrame* SharedDesktopFrame::Share() {
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SharedDesktopFrame* result = new SharedDesktopFrame(core_);
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result->set_dpi(dpi());
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result->set_capture_time_ms(capture_time_ms());
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*result->mutable_updated_region() = updated_region();
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return result;
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}
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bool SharedDesktopFrame::IsShared() {
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return !core_->HasOneRef();
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}
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SharedDesktopFrame::SharedDesktopFrame(scoped_refptr<Core> core)
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: DesktopFrame(core->frame()->size(), core->frame()->stride(),
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core->frame()->data(), core->frame()->shared_memory()),
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core_(core) {
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}
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} // namespace webrtc
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