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
60
61
62
63
64
65
66
67
68
69
70
71
|
/* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_SCREENSHARE_LAYERS_H_
#define WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_SCREENSHARE_LAYERS_H_
#include <list>
#include "vpx/vpx_encoder.h"
#include "webrtc/modules/video_coding/codecs/vp8/temporal_layers.h"
#include "webrtc/modules/video_coding/utility/include/frame_dropper.h"
#include "webrtc/typedefs.h"
namespace webrtc {
struct CodecSpecificInfoVP8;
class ScreenshareLayers : public TemporalLayers {
public:
static const double kMaxTL0FpsReduction;
static const double kAcceptableTargetOvershoot;
ScreenshareLayers(int num_temporal_layers,
uint8_t initial_tl0_pic_idx,
FrameDropper* tl0_frame_dropper,
FrameDropper* tl1_frame_dropper);
virtual ~ScreenshareLayers() {}
// Returns the recommended VP8 encode flags needed. May refresh the decoder
// and/or update the reference buffers.
virtual int EncodeFlags(uint32_t timestamp);
virtual bool ConfigureBitrates(int bitrate_kbit,
int max_bitrate_kbit,
int framerate,
vpx_codec_enc_cfg_t* cfg);
virtual void PopulateCodecSpecific(bool base_layer_sync,
CodecSpecificInfoVP8 *vp8_info,
uint32_t timestamp);
virtual void FrameEncoded(unsigned int size, uint32_t timestamp);
virtual int CurrentLayerId() const;
protected:
virtual bool TargetBitrateExperimentEnabled();
private:
void CalculateFramerate(uint32_t timestamp);
bool TimeToSync(uint32_t timestamp) const;
FrameDropper* tl0_frame_dropper_;
FrameDropper* tl1_frame_dropper_;
int number_of_temporal_layers_;
bool last_base_layer_sync_;
uint8_t tl0_pic_idx_;
int active_layer_;
std::list<uint32_t> timestamp_list_;
int framerate_;
int64_t last_sync_timestamp_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_VIDEO_CODING_CODECS_VP8_SCREENSHARE_LAYERS_H_
|
