tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

desktop_frame_provider.mm (1992B)

      1 /*
      2 *  Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
      3 *
      4 *  Use of this source code is governed by a BSD-style license
      5 *  that can be found in the LICENSE file in the root of the source
      6 *  tree. An additional intellectual property rights grant can be found
      7 *  in the file PATENTS.  All contributing project authors may
      8 *  be found in the AUTHORS file in the root of the source tree.
      9 */
     10 
     11 #include "modules/desktop_capture/mac/desktop_frame_provider.h"
     12 
     13 #include <utility>
     14 
     15 #include "modules/desktop_capture/mac/desktop_frame_cgimage.h"
     16 #include "modules/desktop_capture/mac/desktop_frame_iosurface.h"
     17 
     18 namespace webrtc {
     19 
     20 DesktopFrameProvider::DesktopFrameProvider(bool allow_iosurface)
     21    : allow_iosurface_(allow_iosurface) {
     22  thread_checker_.Detach();
     23 }
     24 
     25 DesktopFrameProvider::~DesktopFrameProvider() {
     26  RTC_DCHECK(thread_checker_.IsCurrent());
     27 
     28  Release();
     29 }
     30 
     31 std::unique_ptr<DesktopFrame> DesktopFrameProvider::TakeLatestFrameForDisplay(
     32    CGDirectDisplayID display_id) {
     33  RTC_DCHECK(thread_checker_.IsCurrent());
     34 
     35  if (!allow_iosurface_ || !io_surfaces_[display_id]) {
     36    // Regenerate a snapshot. If iosurface is on it will be empty until the
     37    // stream handler is called.
     38    return DesktopFrameCGImage::CreateForDisplay(display_id);
     39  }
     40 
     41  return io_surfaces_[display_id]->Share();
     42 }
     43 
     44 void DesktopFrameProvider::InvalidateIOSurface(
     45    CGDirectDisplayID display_id,
     46    webrtc::ScopedCFTypeRef<IOSurfaceRef> io_surface) {
     47  RTC_DCHECK(thread_checker_.IsCurrent());
     48 
     49  if (!allow_iosurface_) {
     50    return;
     51  }
     52 
     53  std::unique_ptr<DesktopFrameIOSurface> desktop_frame_iosurface =
     54      DesktopFrameIOSurface::Wrap(io_surface);
     55 
     56  io_surfaces_[display_id] = desktop_frame_iosurface ?
     57      SharedDesktopFrame::Wrap(std::move(desktop_frame_iosurface)) :
     58      nullptr;
     59 }
     60 
     61 void DesktopFrameProvider::Release() {
     62  RTC_DCHECK(thread_checker_.IsCurrent());
     63 
     64  if (!allow_iosurface_) {
     65    return;
     66  }
     67 
     68  io_surfaces_.clear();
     69 }
     70 
     71 }  // namespace webrtc