1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_GPU_H_
#define REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_GPU_H_
#include "base/memory/scoped_refptr.h"
#include "media/base/video_codecs.h"
#include "remoting/codec/webrtc_video_encoder.h"
#include "ui/gfx/geometry/size.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace remoting {
// A WebrtcVideoEncoder implementation utilizing the VideoEncodeAccelerator
// framework to do hardware-accelerated encoding. Due to threading requirements
// when using the VEA on Windows, WebrtcVideoEncoderGpu uses an inner 'core'
// class which is run on a dedicated thread.
class WebrtcVideoEncoderGpu : public WebrtcVideoEncoder {
public:
struct Profile {
gfx::Size resolution;
int frame_rate; // Always > 0
};
static std::unique_ptr<WebrtcVideoEncoder> CreateForH264();
static bool IsSupportedByH264(const Profile& profile);
~WebrtcVideoEncoderGpu() override;
WebrtcVideoEncoderGpu(const WebrtcVideoEncoderGpu&) = delete;
WebrtcVideoEncoderGpu& operator=(const WebrtcVideoEncoderGpu&) = delete;
// WebrtcVideoEncoder interface.
void Encode(std::unique_ptr<webrtc::DesktopFrame> frame,
const FrameParams& params,
WebrtcVideoEncoder::EncodeCallback done) override;
private:
class Core;
std::unique_ptr<Core> core_;
explicit WebrtcVideoEncoderGpu(media::VideoCodecProfile codec_profile);
// GPU operations are performed on this task runner. This is necessary as the
// MF VEA must be created and destroyed on a specific thread and not a
// sequence.
// TODO(joedow): If we start supporting H.264 on non-Windows platforms and
// they do not have this requirement, we can refactor this such that the
// Windows impl runs on a dedicated thread and other platforms do not.
scoped_refptr<base::SingleThreadTaskRunner> hw_encode_task_runner_;
};
} // namespace remoting
#endif // REMOTING_CODEC_WEBRTC_VIDEO_ENCODER_GPU_H_
|
