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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 "remoting/protocol/webrtc_video_renderer_adapter.h" |
| 6 |
| 7 #include <utility> |
| 8 |
| 9 #include "base/bind.h" |
| 10 #include "base/callback.h" |
| 11 #include "base/location.h" |
| 12 #include "base/memory/scoped_ptr.h" |
| 13 #include "base/single_thread_task_runner.h" |
| 14 #include "base/thread_task_runner_handle.h" |
| 15 #include "remoting/protocol/frame_consumer.h" |
| 16 #include "third_party/libjingle/source/talk/media/base/videoframe.h" |
| 17 #include "third_party/libyuv/include/libyuv/video_common.h" |
| 18 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h" |
| 19 |
| 20 namespace remoting { |
| 21 namespace protocol { |
| 22 |
| 23 WebrtcVideoRendererAdapter::WebrtcVideoRendererAdapter( |
| 24 scoped_refptr<webrtc::MediaStreamInterface> media_stream, |
| 25 FrameConsumer* frame_consumer) |
| 26 : media_stream_(std::move(media_stream)), |
| 27 frame_consumer_(frame_consumer), |
| 28 output_format_fourcc_(frame_consumer_->GetPixelFormat() == |
| 29 FrameConsumer::FORMAT_BGRA |
| 30 ? libyuv::FOURCC_ARGB |
| 31 : libyuv::FOURCC_ABGR), |
| 32 task_runner_(base::ThreadTaskRunnerHandle::Get()), |
| 33 weak_factory_(this) { |
| 34 webrtc::VideoTrackVector video_tracks = media_stream_->GetVideoTracks(); |
| 35 if (video_tracks.empty()) { |
| 36 LOG(ERROR) << "Received media stream with no video tracks."; |
| 37 return; |
| 38 } |
| 39 |
| 40 if (video_tracks.size() > 1U) { |
| 41 LOG(WARNING) << "Received media stream with multiple video tracks."; |
| 42 } |
| 43 |
| 44 video_tracks[0]->AddRenderer(this); |
| 45 } |
| 46 |
| 47 WebrtcVideoRendererAdapter::~WebrtcVideoRendererAdapter() { |
| 48 DCHECK(task_runner_->BelongsToCurrentThread()); |
| 49 } |
| 50 |
| 51 void WebrtcVideoRendererAdapter::RenderFrame(const cricket::VideoFrame* frame) { |
| 52 // TODO(sergeyu): WebRTC calls RenderFrame on a separate thread it creates. |
| 53 // FrameConsumer normally expects to be called on the network thread, so we |
| 54 // cannot call FrameConsumer::AllocateFrame() here and instead |
| 55 // BasicDesktopFrame is created directly. This will not work correctly with |
| 56 // all FrameConsumer implementations. Fix this somehow. |
| 57 scoped_ptr<webrtc::DesktopFrame> rgb_frame(new webrtc::BasicDesktopFrame( |
| 58 webrtc::DesktopSize(frame->GetWidth(), frame->GetHeight()))); |
| 59 |
| 60 frame->ConvertToRgbBuffer( |
| 61 output_format_fourcc_, rgb_frame->data(), |
| 62 std::abs(rgb_frame->stride()) * rgb_frame->size().height(), |
| 63 rgb_frame->stride()); |
| 64 rgb_frame->mutable_updated_region()->AddRect( |
| 65 webrtc::DesktopRect::MakeSize(rgb_frame->size())); |
| 66 task_runner_->PostTask( |
| 67 FROM_HERE, |
| 68 base::Bind(&WebrtcVideoRendererAdapter::DrawFrame, |
| 69 weak_factory_.GetWeakPtr(), base::Passed(&rgb_frame))); |
| 70 } |
| 71 |
| 72 void WebrtcVideoRendererAdapter::DrawFrame( |
| 73 scoped_ptr<webrtc::DesktopFrame> frame) { |
| 74 DCHECK(task_runner_->BelongsToCurrentThread()); |
| 75 frame_consumer_->DrawFrame(std::move(frame), base::Closure()); |
| 76 } |
| 77 |
| 78 } // namespace remoting |
| 79 } // namespace protocol |
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