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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
/*
* Copyright (c) 2018 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.
*/
#include "test/fake_vp8_encoder.h"
#include <algorithm>
#include "absl/types/optional.h"
#include "api/video_codecs/video_encoder.h"
#include "api/video_codecs/vp8_temporal_layers.h"
#include "api/video_codecs/vp8_temporal_layers_factory.h"
#include "modules/video_coding/codecs/interface/common_constants.h"
#include "modules/video_coding/include/video_codec_interface.h"
#include "modules/video_coding/include/video_error_codes.h"
#include "modules/video_coding/utility/simulcast_utility.h"
namespace {
// Write width and height to the payload the same way as the real encoder does.
// It requires that `payload` has a size of at least kMinPayLoadHeaderLength.
void WriteFakeVp8(unsigned char* payload,
int width,
int height,
bool key_frame) {
payload[0] = key_frame ? 0 : 0x01;
if (key_frame) {
payload[9] = (height & 0x3F00) >> 8;
payload[8] = (height & 0x00FF);
payload[7] = (width & 0x3F00) >> 8;
payload[6] = (width & 0x00FF);
}
}
} // namespace
namespace webrtc {
namespace test {
FakeVp8Encoder::FakeVp8Encoder(Clock* clock) : FakeEncoder(clock) {
sequence_checker_.Detach();
}
int32_t FakeVp8Encoder::InitEncode(const VideoCodec* config,
const Settings& settings) {
RTC_DCHECK_RUN_ON(&sequence_checker_);
auto result = FakeEncoder::InitEncode(config, settings);
if (result != WEBRTC_VIDEO_CODEC_OK) {
return result;
}
Vp8TemporalLayersFactory factory;
frame_buffer_controller_ =
factory.Create(*config, settings, &fec_controller_override_);
return WEBRTC_VIDEO_CODEC_OK;
}
int32_t FakeVp8Encoder::Release() {
auto result = FakeEncoder::Release();
sequence_checker_.Detach();
return result;
}
CodecSpecificInfo FakeVp8Encoder::PopulateCodecSpecific(
size_t size_bytes,
VideoFrameType frame_type,
int stream_idx,
uint32_t timestamp) {
RTC_DCHECK_RUN_ON(&sequence_checker_);
CodecSpecificInfo codec_specific;
codec_specific.codecType = kVideoCodecVP8;
codec_specific.codecSpecific.VP8.keyIdx = kNoKeyIdx;
codec_specific.codecSpecific.VP8.nonReference = false;
if (size_bytes > 0) {
frame_buffer_controller_->OnEncodeDone(
stream_idx, timestamp, size_bytes,
frame_type == VideoFrameType::kVideoFrameKey, -1, &codec_specific);
} else {
frame_buffer_controller_->OnFrameDropped(stream_idx, timestamp);
}
return codec_specific;
}
CodecSpecificInfo FakeVp8Encoder::EncodeHook(
EncodedImage& encoded_image,
rtc::scoped_refptr<EncodedImageBuffer> buffer) {
RTC_DCHECK_RUN_ON(&sequence_checker_);
uint8_t simulcast_index = encoded_image.SimulcastIndex().value_or(0);
frame_buffer_controller_->NextFrameConfig(simulcast_index,
encoded_image.RtpTimestamp());
CodecSpecificInfo codec_specific =
PopulateCodecSpecific(encoded_image.size(), encoded_image._frameType,
simulcast_index, encoded_image.RtpTimestamp());
// Write width and height to the payload the same way as the real encoder
// does.
WriteFakeVp8(buffer->data(), encoded_image._encodedWidth,
encoded_image._encodedHeight,
encoded_image._frameType == VideoFrameType::kVideoFrameKey);
return codec_specific;
}
VideoEncoder::EncoderInfo FakeVp8Encoder::GetEncoderInfo() const {
EncoderInfo info;
info.implementation_name = "FakeVp8Encoder";
MutexLock lock(&mutex_);
for (int sid = 0; sid < config_.numberOfSimulcastStreams; ++sid) {
int number_of_temporal_layers =
config_.simulcastStream[sid].numberOfTemporalLayers;
info.fps_allocation[sid].clear();
for (int tid = 0; tid < number_of_temporal_layers; ++tid) {
// {1/4, 1/2, 1} allocation for num layers = 3.
info.fps_allocation[sid].push_back(255 /
(number_of_temporal_layers - tid));
}
}
return info;
}
} // namespace test
} // namespace webrtc
|
