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
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* 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 "modules/video_coding/encoder_database.h"
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
namespace webrtc {
namespace {
const size_t kDefaultPayloadSize = 1440;
}
VCMEncoderDataBase::VCMEncoderDataBase(
VCMEncodedFrameCallback* encoded_frame_callback)
: number_of_cores_(0),
max_payload_size_(kDefaultPayloadSize),
pending_encoder_reset_(true),
send_codec_(),
external_encoder_(nullptr),
internal_source_(false),
encoded_frame_callback_(encoded_frame_callback) {}
VCMEncoderDataBase::~VCMEncoderDataBase() {
DeleteEncoder();
}
// Assuming only one registered encoder - since only one used, no need for more.
bool VCMEncoderDataBase::SetSendCodec(const VideoCodec* send_codec,
int number_of_cores,
size_t max_payload_size) {
RTC_DCHECK(send_codec);
if (max_payload_size == 0) {
max_payload_size = kDefaultPayloadSize;
}
RTC_DCHECK_GE(number_of_cores, 1);
// Make sure the start bit rate is sane...
RTC_DCHECK_LE(send_codec->startBitrate, 1000000);
bool reset_required = pending_encoder_reset_;
if (number_of_cores_ != number_of_cores) {
number_of_cores_ = number_of_cores;
reset_required = true;
}
if (max_payload_size_ != max_payload_size) {
max_payload_size_ = max_payload_size;
reset_required = true;
}
VideoCodec new_send_codec;
memcpy(&new_send_codec, send_codec, sizeof(new_send_codec));
if (new_send_codec.maxBitrate == 0) {
// max is one bit per pixel
new_send_codec.maxBitrate = (static_cast<int>(send_codec->height) *
static_cast<int>(send_codec->width) *
static_cast<int>(send_codec->maxFramerate)) /
1000;
if (send_codec->startBitrate > new_send_codec.maxBitrate) {
// But if the user tries to set a higher start bit rate we will
// increase the max accordingly.
new_send_codec.maxBitrate = send_codec->startBitrate;
}
}
if (new_send_codec.startBitrate > new_send_codec.maxBitrate)
new_send_codec.startBitrate = new_send_codec.maxBitrate;
if (!reset_required) {
reset_required = RequiresEncoderReset(new_send_codec);
}
memcpy(&send_codec_, &new_send_codec, sizeof(send_codec_));
if (!reset_required) {
return true;
}
// If encoder exists, will destroy it and create new one.
DeleteEncoder();
ptr_encoder_.reset(new VCMGenericEncoder(
external_encoder_, encoded_frame_callback_, internal_source_));
encoded_frame_callback_->SetInternalSource(internal_source_);
if (ptr_encoder_->InitEncode(&send_codec_, number_of_cores_,
max_payload_size_) < 0) {
RTC_LOG(LS_ERROR) << "Failed to initialize video encoder.";
DeleteEncoder();
return false;
}
pending_encoder_reset_ = false;
return true;
}
void VCMEncoderDataBase::DeregisterExternalEncoder() {
DeleteEncoder();
memset(&send_codec_, 0, sizeof(VideoCodec));
external_encoder_ = nullptr;
internal_source_ = false;
}
void VCMEncoderDataBase::RegisterExternalEncoder(VideoEncoder* external_encoder,
bool internal_source) {
// Since only one encoder can be used at a given time, only one external
// encoder can be registered/used.
RTC_CHECK(external_encoder_ == nullptr);
external_encoder_ = external_encoder;
internal_source_ = internal_source;
pending_encoder_reset_ = true;
}
bool VCMEncoderDataBase::RequiresEncoderReset(
const VideoCodec& new_send_codec) {
if (!ptr_encoder_)
return true;
// Does not check startBitrate, maxFramerate or plType
if (new_send_codec.codecType != send_codec_.codecType ||
new_send_codec.width != send_codec_.width ||
new_send_codec.height != send_codec_.height ||
new_send_codec.maxBitrate != send_codec_.maxBitrate ||
new_send_codec.minBitrate != send_codec_.minBitrate ||
new_send_codec.qpMax != send_codec_.qpMax ||
new_send_codec.numberOfSimulcastStreams !=
send_codec_.numberOfSimulcastStreams ||
new_send_codec.mode != send_codec_.mode) {
return true;
}
switch (new_send_codec.codecType) {
case kVideoCodecVP8:
if (new_send_codec.VP8() != *send_codec_.VP8()) {
return true;
}
break;
case kVideoCodecVP9:
if (new_send_codec.VP9() != *send_codec_.VP9()) {
return true;
}
break;
case kVideoCodecH264:
if (new_send_codec.H264() != *send_codec_.H264()) {
return true;
}
break;
default:
break;
}
for (unsigned char i = 0; i < new_send_codec.numberOfSimulcastStreams; ++i) {
if (new_send_codec.simulcastStream[i] != send_codec_.simulcastStream[i])
return true;
}
return false;
}
VCMGenericEncoder* VCMEncoderDataBase::GetEncoder() {
return ptr_encoder_.get();
}
void VCMEncoderDataBase::DeleteEncoder() {
if (!ptr_encoder_)
return;
ptr_encoder_->Release();
ptr_encoder_.reset();
}
bool VCMEncoderDataBase::MatchesCurrentResolution(int width, int height) const {
return send_codec_.width == width && send_codec_.height == height;
}
} // namespace webrtc
|
