Index: remoting/client/dual_buffer_frame_consumer.cc |
diff --git a/remoting/client/dual_buffer_frame_consumer.cc b/remoting/client/dual_buffer_frame_consumer.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..83bbd479a3ea46f77515894c395d696442f1dc8d |
--- /dev/null |
+++ b/remoting/client/dual_buffer_frame_consumer.cc |
@@ -0,0 +1,116 @@ |
+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "remoting/client/dual_buffer_frame_consumer.h" |
+ |
+#include "base/bind.h" |
+#include "base/bind_helpers.h" |
+#include "base/location.h" |
+#include "base/memory/ptr_util.h" |
+#include "remoting/base/util.h" |
+#include "third_party/webrtc/modules/desktop_capture/desktop_frame.h" |
+#include "third_party/webrtc/modules/desktop_capture/shared_desktop_frame.h" |
+ |
+namespace remoting { |
+ |
+DualBufferFrameConsumer::DualBufferFrameConsumer( |
+ base::Callback<void(std::unique_ptr<webrtc::DesktopFrame>)> callback, |
+ scoped_refptr<base::SingleThreadTaskRunner> task_runner, |
+ protocol::FrameConsumer::PixelFormat format) |
+ : callback_(callback), |
+ task_runner_(task_runner), |
+ pixel_format_(format), |
+ weak_factory_(this) { |
+ weak_ptr_ = weak_factory_.GetWeakPtr(); |
+ thread_checker_.DetachFromThread(); |
+} |
+ |
+DualBufferFrameConsumer::~DualBufferFrameConsumer() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+} |
+ |
+void DualBufferFrameConsumer::RequestFullDesktopFrame() { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ if (!buffer_0_) { |
+ return; |
+ } |
+ DCHECK(buffer_0_->size().equals(buffer_1_->size())); |
+ std::unique_ptr<webrtc::DesktopFrame> full_frame( |
+ webrtc::BasicDesktopFrame::CopyOf(*buffer_0_)); |
+ webrtc::DesktopRect desktop_rect = |
+ webrtc::DesktopRect::MakeSize(buffer_0_->size()); |
+ for (webrtc::DesktopRegion::Iterator i(buffer_1_mask_); !i.IsAtEnd(); |
+ i.Advance()) { |
+ CopyRGB32Rect(buffer_1_->data(), buffer_1_->stride(), desktop_rect, |
+ full_frame->data(), full_frame->stride(), desktop_rect, |
+ i.rect()); |
+ } |
+ full_frame->mutable_updated_region()->SetRect(desktop_rect); |
+ |
+ RunRenderCallback(std::move(full_frame), base::Closure()); |
+} |
+ |
+std::unique_ptr<webrtc::DesktopFrame> DualBufferFrameConsumer::AllocateFrame( |
+ const webrtc::DesktopSize& size) { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ if (!buffer_0_ || !buffer_0_->size().equals(size)) { |
+ buffer_0_ = webrtc::SharedDesktopFrame::Wrap( |
Sergey Ulanov
2016/07/20 18:39:26
add comment that both buffers are reallocated when
Yuwei
2016/07/21 00:07:32
Done.
|
+ base::WrapUnique(new webrtc::BasicDesktopFrame(size))); |
+ buffer_1_ = webrtc::SharedDesktopFrame::Wrap( |
+ base::WrapUnique(new webrtc::BasicDesktopFrame(size))); |
+ buffer_1_mask_.Clear(); |
+ next_buffer_ = 0; |
+ } |
+ next_buffer_ = (next_buffer_ + 1) % 2; |
Sergey Ulanov
2016/07/20 18:39:26
I think you want to synchronize buffers here (or m
Yuwei
2016/07/20 19:12:43
Do you mean that when rendering is slower than dec
|
+ if (next_buffer_ == 0) { |
Sergey Ulanov
2016/07/20 18:39:26
If you replace buffer_?_ with buffers_[] then this
Yuwei
2016/07/21 00:07:32
Done.
|
+ return buffer_1_->Share(); |
+ } else { |
+ return buffer_0_->Share(); |
+ } |
+} |
+ |
+void DualBufferFrameConsumer::DrawFrame( |
+ std::unique_ptr<webrtc::DesktopFrame> frame, |
+ const base::Closure& done) { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ if ((reinterpret_cast<webrtc::SharedDesktopFrame*> (frame.get())) |
Yuwei
2016/07/18 22:38:35
This assumes |frame| must come from AllocateFrame.
Sergey Ulanov
2016/07/20 18:39:26
Yes, this is a valid assumption. Caller must use A
Yuwei
2016/07/21 00:07:32
Acknowledged.
|
+ ->GetUnderlyingFrame() == buffer_1_->GetUnderlyingFrame()) { |
+ buffer_1_mask_.AddRegion(frame->updated_region()); |
+ } else { |
+ buffer_1_mask_.Subtract(frame->updated_region()); |
+ } |
+ RunRenderCallback(std::move(frame), done); |
+} |
+ |
+protocol::FrameConsumer::PixelFormat |
+DualBufferFrameConsumer::GetPixelFormat() { |
+ return pixel_format_; |
+} |
+ |
+base::WeakPtr<DualBufferFrameConsumer> DualBufferFrameConsumer::GetWeakPtr() { |
+ return weak_ptr_; |
+} |
+ |
+void DualBufferFrameConsumer::RunRenderCallback( |
+ std::unique_ptr<webrtc::DesktopFrame> frame, |
+ const base::Closure& done) { |
+ if (!task_runner_) { |
+ callback_.Run(std::move(frame)); |
+ done.Run(); |
+ return; |
+ } |
+ task_runner_->PostTaskAndReply( |
+ FROM_HERE, base::Bind(callback_, base::Passed(&frame)), |
+ base::Bind(&DualBufferFrameConsumer::OnFrameRendered, GetWeakPtr(), |
+ done)); |
+} |
+ |
+void DualBufferFrameConsumer::OnFrameRendered(const base::Closure& done) { |
+ DCHECK(thread_checker_.CalledOnValidThread()); |
+ if (done) { |
+ done.Run(); |
+ } |
+} |
+ |
+} // namespace remoting |