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| 1 // Copyright 2015 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/browser/media/capture/virtual_display_capturer.h" |
| 6 |
| 7 #include "base/logging.h" |
| 8 #include "base/sys_info.h" |
| 9 #include "base/timer/timer.h" |
| 10 #include "content/browser/media/capture/aura_window_capture_machine.h" |
| 11 #include "content/browser/media/capture/content_video_capture_device_core.h" |
| 12 #include "content/public/browser/browser_thread.h" |
| 13 #include "ui/aura/window.h" |
| 14 #include "ui/display/chromeos/display_configurator.h" |
| 15 #include "ui/gfx/screen.h" |
| 16 |
| 17 namespace content { |
| 18 |
| 19 namespace { |
| 20 |
| 21 void EnableVirtualDisplay(const gfx::Size& size) { |
| 22 ui::DisplayConfigurator::GetInstance()->EnableVirtualDisplay(size); |
| 23 } |
| 24 |
| 25 void DisableVirtualDisplay() { |
| 26 ui::DisplayConfigurator::GetInstance()->DisableVirtualDisplay(); |
| 27 } |
| 28 |
| 29 } // namespace |
| 30 |
| 31 VirtualDisplayCapturer::VirtualDisplayCapturer( |
| 32 scoped_refptr<base::SingleThreadTaskRunner> task_runner, |
| 33 const DesktopMediaID& source) |
| 34 : source_(source), |
| 35 machine_(new AuraWindowCaptureMachine()), |
| 36 device_task_runner_(task_runner) { |
| 37 core_.reset(new ContentVideoCaptureDeviceCore(make_scoped_ptr(machine_))); |
| 38 gfx::Screen::GetNativeScreen()->AddObserver(this); |
| 39 } |
| 40 |
| 41 VirtualDisplayCapturer::~VirtualDisplayCapturer() { |
| 42 gfx::Screen::GetNativeScreen()->RemoveObserver(this); |
| 43 } |
| 44 |
| 45 // static |
| 46 media::VideoCaptureDevice* VirtualDisplayCapturer::Create( |
| 47 scoped_refptr<base::SingleThreadTaskRunner> task_runner, |
| 48 const DesktopMediaID& source) { |
| 49 DCHECK(base::SysInfo::IsRunningOnChromeOS()); |
| 50 return new VirtualDisplayCapturer(task_runner, source); |
| 51 } |
| 52 |
| 53 void VirtualDisplayCapturer::AllocateAndStart( |
| 54 const media::VideoCaptureParams& params, |
| 55 scoped_ptr<Client> client) { |
| 56 BrowserThread::PostTask( |
| 57 BrowserThread::UI, FROM_HERE, |
| 58 base::Bind(&EnableVirtualDisplay, params.requested_format.frame_size)); |
| 59 |
| 60 params_ = params; |
| 61 client_.swap(client); |
| 62 } |
| 63 |
| 64 void VirtualDisplayCapturer::StopAndDeAllocate() { |
| 65 core_->StopAndDeAllocate(); |
| 66 BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, |
| 67 base::Bind(&DisableVirtualDisplay)); |
| 68 } |
| 69 |
| 70 // This will be called after the VirtualDisplayMonitor object has updated the |
| 71 // virtual display in the DesktopMediaID::AuraWindowRegistry. |
| 72 void VirtualDisplayCapturer::OnDisplayAdded(const gfx::Display& display) { |
| 73 DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)); |
| 74 |
| 75 if (display.id() == |
| 76 ui::DisplayConfigurator::GetInstance()->GetVirtualDisplayId()) { |
| 77 aura::Window* window = DesktopMediaID::GetAuraWindowById(source_); |
| 78 machine_->SetWindow(window); |
| 79 gfx::Screen::GetNativeScreen()->RemoveObserver(this); |
| 80 // Safe to use base::Unretained here as StopAndDeAllocate must be called |
| 81 // before destroying |core_|. |
| 82 device_task_runner_->PostTask( |
| 83 FROM_HERE, base::Bind(&ContentVideoCaptureDeviceCore::AllocateAndStart, |
| 84 base::Unretained(core_.get()), params_, |
| 85 base::Passed(client_.Pass()))); |
| 86 } |
| 87 } |
| 88 |
| 89 } // namespace content |
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