1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "host/frontend/webrtc/lib/video_track_source_impl.h"
18
19 #include <api/video/video_frame_buffer.h>
20
21 namespace cuttlefish {
22 namespace webrtc_streaming {
23
24 namespace {
25
26 class VideoFrameWrapper : public webrtc::I420BufferInterface {
27 public:
VideoFrameWrapper(std::shared_ptr<::cuttlefish::webrtc_streaming::VideoFrameBuffer> frame_buffer)28 VideoFrameWrapper(
29 std::shared_ptr<::cuttlefish::webrtc_streaming::VideoFrameBuffer>
30 frame_buffer)
31 : frame_buffer_(frame_buffer) {}
32 ~VideoFrameWrapper() override = default;
33 // From VideoFrameBuffer
width() const34 int width() const override { return frame_buffer_->width(); }
height() const35 int height() const override { return frame_buffer_->height(); }
36
37 // From class PlanarYuvBuffer
StrideY() const38 int StrideY() const override { return frame_buffer_->StrideY(); }
StrideU() const39 int StrideU() const override { return frame_buffer_->StrideU(); }
StrideV() const40 int StrideV() const override { return frame_buffer_->StrideV(); }
41
42 // From class PlanarYuv8Buffer
DataY() const43 const uint8_t *DataY() const override { return frame_buffer_->DataY(); }
DataU() const44 const uint8_t *DataU() const override { return frame_buffer_->DataU(); }
DataV() const45 const uint8_t *DataV() const override { return frame_buffer_->DataV(); }
46
47 private:
48 std::shared_ptr<::cuttlefish::webrtc_streaming::VideoFrameBuffer>
49 frame_buffer_;
50 };
51
52 } // namespace
53
VideoTrackSourceImpl(int width,int height)54 VideoTrackSourceImpl::VideoTrackSourceImpl(int width, int height)
55 : webrtc::VideoTrackSource(false), width_(width), height_(height) {}
56
OnFrame(std::shared_ptr<VideoFrameBuffer> frame,int64_t timestamp_us)57 void VideoTrackSourceImpl::OnFrame(std::shared_ptr<VideoFrameBuffer> frame,
58 int64_t timestamp_us) {
59 auto video_frame =
60 webrtc::VideoFrame::Builder()
61 .set_video_frame_buffer(
62 new rtc::RefCountedObject<VideoFrameWrapper>(frame))
63 .set_timestamp_us(timestamp_us)
64 .build();
65 broadcaster_.OnFrame(video_frame);
66 }
67
GetStats(Stats * stats)68 bool VideoTrackSourceImpl::GetStats(Stats *stats) {
69 stats->input_height = height_;
70 stats->input_width = width_;
71 return true;
72 }
73
SupportsEncodedOutput() const74 bool VideoTrackSourceImpl::SupportsEncodedOutput() const { return false; }
source()75 rtc::VideoSourceInterface<webrtc::VideoFrame> *VideoTrackSourceImpl::source() {
76 return &broadcaster_;
77 }
78
79 } // namespace webrtc_streaming
80 } // namespace cuttlefish
81