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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
|
/* 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.
*/
#include <string.h>
#include <list>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/modules/video_coding/main/source/packet.h"
#include "webrtc/modules/video_coding/main/source/receiver.h"
#include "webrtc/modules/video_coding/main/source/test/stream_generator.h"
#include "webrtc/modules/video_coding/main/source/timing.h"
#include "webrtc/modules/video_coding/main/test/test_util.h"
#include "webrtc/system_wrappers/interface/clock.h"
#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
namespace webrtc {
class TestVCMReceiver : public ::testing::Test {
protected:
enum { kDataBufferSize = 10 };
enum { kWidth = 640 };
enum { kHeight = 480 };
TestVCMReceiver()
: clock_(new SimulatedClock(0)),
timing_(clock_.get()),
receiver_(&timing_, clock_.get(), &event_factory_, true) {
stream_generator_.reset(new
StreamGenerator(0, 0, clock_->TimeInMilliseconds()));
memset(data_buffer_, 0, kDataBufferSize);
}
virtual void SetUp() {
receiver_.Reset();
}
int32_t InsertPacket(int index) {
VCMPacket packet;
packet.dataPtr = data_buffer_;
bool packet_available = stream_generator_->GetPacket(&packet, index);
EXPECT_TRUE(packet_available);
if (!packet_available)
return kGeneralError; // Return here to avoid crashes below.
// Arbitrary width and height.
return receiver_.InsertPacket(packet, 640, 480);
}
int32_t InsertPacketAndPop(int index) {
VCMPacket packet;
packet.dataPtr = data_buffer_;
bool packet_available = stream_generator_->PopPacket(&packet, index);
EXPECT_TRUE(packet_available);
if (!packet_available)
return kGeneralError; // Return here to avoid crashes below.
return receiver_.InsertPacket(packet, kWidth, kHeight);
}
int32_t InsertFrame(FrameType frame_type, bool complete) {
int num_of_packets = complete ? 1 : 2;
stream_generator_->GenerateFrame(
frame_type,
(frame_type != kFrameEmpty) ? num_of_packets : 0,
(frame_type == kFrameEmpty) ? 1 : 0,
clock_->TimeInMilliseconds());
int32_t ret = InsertPacketAndPop(0);
if (!complete) {
// Drop the second packet.
VCMPacket packet;
stream_generator_->PopPacket(&packet, 0);
}
clock_->AdvanceTimeMilliseconds(kDefaultFramePeriodMs);
return ret;
}
bool DecodeNextFrame() {
int64_t render_time_ms = 0;
VCMEncodedFrame* frame =
receiver_.FrameForDecoding(0, render_time_ms, false);
if (!frame)
return false;
receiver_.ReleaseFrame(frame);
return true;
}
scoped_ptr<SimulatedClock> clock_;
VCMTiming timing_;
NullEventFactory event_factory_;
VCMReceiver receiver_;
scoped_ptr<StreamGenerator> stream_generator_;
uint8_t data_buffer_[kDataBufferSize];
};
TEST_F(TestVCMReceiver, RenderBufferSize_AllComplete) {
EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
int num_of_frames = 10;
for (int i = 0; i < num_of_frames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
EXPECT_EQ(num_of_frames * kDefaultFramePeriodMs,
receiver_.RenderBufferSizeMs());
}
TEST_F(TestVCMReceiver, RenderBufferSize_SkipToKeyFrame) {
EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
const int kNumOfNonDecodableFrames = 2;
for (int i = 0; i < kNumOfNonDecodableFrames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
const int kNumOfFrames = 10;
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
for (int i = 0; i < kNumOfFrames - 1; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
EXPECT_EQ((kNumOfFrames - 1) * kDefaultFramePeriodMs,
receiver_.RenderBufferSizeMs());
}
TEST_F(TestVCMReceiver, RenderBufferSize_NotAllComplete) {
EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
int num_of_frames = 10;
for (int i = 0; i < num_of_frames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
num_of_frames++;
EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
for (int i = 0; i < num_of_frames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
EXPECT_EQ((num_of_frames - 1) * kDefaultFramePeriodMs,
receiver_.RenderBufferSizeMs());
}
TEST_F(TestVCMReceiver, RenderBufferSize_NoKeyFrame) {
EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
int num_of_frames = 10;
for (int i = 0; i < num_of_frames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
int64_t next_render_time_ms = 0;
VCMEncodedFrame* frame = receiver_.FrameForDecoding(10, next_render_time_ms);
EXPECT_TRUE(frame == NULL);
receiver_.ReleaseFrame(frame);
EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
for (int i = 0; i < num_of_frames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
EXPECT_EQ(0, receiver_.RenderBufferSizeMs());
}
TEST_F(TestVCMReceiver, NonDecodableDuration_Empty) {
// Enable NACK and with no RTT thresholds for disabling retransmission delay.
receiver_.SetNackMode(kNack, -1, -1);
const size_t kMaxNackListSize = 1000;
const int kMaxPacketAgeToNack = 1000;
const int kMaxNonDecodableDuration = 500;
const int kMinDelayMs = 500;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
kMaxNonDecodableDuration);
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
// Advance time until it's time to decode the key frame.
clock_->AdvanceTimeMilliseconds(kMinDelayMs);
EXPECT_TRUE(DecodeNextFrame());
uint16_t nack_list[kMaxNackListSize];
uint16_t nack_list_length = 0;
VCMNackStatus ret = receiver_.NackList(nack_list, kMaxNackListSize,
&nack_list_length);
EXPECT_EQ(kNackOk, ret);
}
TEST_F(TestVCMReceiver, NonDecodableDuration_NoKeyFrame) {
// Enable NACK and with no RTT thresholds for disabling retransmission delay.
receiver_.SetNackMode(kNack, -1, -1);
const size_t kMaxNackListSize = 1000;
const int kMaxPacketAgeToNack = 1000;
const int kMaxNonDecodableDuration = 500;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
kMaxNonDecodableDuration);
const int kNumFrames = kDefaultFrameRate * kMaxNonDecodableDuration / 1000;
for (int i = 0; i < kNumFrames; ++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
uint16_t nack_list[kMaxNackListSize];
uint16_t nack_list_length = 0;
VCMNackStatus ret = receiver_.NackList(nack_list, kMaxNackListSize,
&nack_list_length);
EXPECT_EQ(kNackKeyFrameRequest, ret);
}
TEST_F(TestVCMReceiver, NonDecodableDuration_OneIncomplete) {
// Enable NACK and with no RTT thresholds for disabling retransmission delay.
receiver_.SetNackMode(kNack, -1, -1);
const size_t kMaxNackListSize = 1000;
const int kMaxPacketAgeToNack = 1000;
const int kMaxNonDecodableDuration = 500;
const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
kMaxNonDecodableDuration + 500) / 1000;
const int kMinDelayMs = 500;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
kMaxNonDecodableDuration);
receiver_.SetMinReceiverDelay(kMinDelayMs);
int64_t key_frame_inserted = clock_->TimeInMilliseconds();
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
// Insert an incomplete frame.
EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
// Insert enough frames to have too long non-decodable sequence.
for (int i = 0; i < kMaxNonDecodableDurationFrames;
++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
// Advance time until it's time to decode the key frame.
clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
key_frame_inserted);
EXPECT_TRUE(DecodeNextFrame());
// Make sure we get a key frame request.
uint16_t nack_list[kMaxNackListSize];
uint16_t nack_list_length = 0;
VCMNackStatus ret = receiver_.NackList(nack_list, kMaxNackListSize,
&nack_list_length);
EXPECT_EQ(kNackKeyFrameRequest, ret);
}
TEST_F(TestVCMReceiver, NonDecodableDuration_NoTrigger) {
// Enable NACK and with no RTT thresholds for disabling retransmission delay.
receiver_.SetNackMode(kNack, -1, -1);
const size_t kMaxNackListSize = 1000;
const int kMaxPacketAgeToNack = 1000;
const int kMaxNonDecodableDuration = 500;
const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
kMaxNonDecodableDuration + 500) / 1000;
const int kMinDelayMs = 500;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
kMaxNonDecodableDuration);
receiver_.SetMinReceiverDelay(kMinDelayMs);
int64_t key_frame_inserted = clock_->TimeInMilliseconds();
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
// Insert an incomplete frame.
EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
// Insert all but one frame to not trigger a key frame request due to
// too long duration of non-decodable frames.
for (int i = 0; i < kMaxNonDecodableDurationFrames - 1;
++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
// Advance time until it's time to decode the key frame.
clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
key_frame_inserted);
EXPECT_TRUE(DecodeNextFrame());
// Make sure we don't get a key frame request since we haven't generated
// enough frames.
uint16_t nack_list[kMaxNackListSize];
uint16_t nack_list_length = 0;
VCMNackStatus ret = receiver_.NackList(nack_list, kMaxNackListSize,
&nack_list_length);
EXPECT_EQ(kNackOk, ret);
}
TEST_F(TestVCMReceiver, NonDecodableDuration_NoTrigger2) {
// Enable NACK and with no RTT thresholds for disabling retransmission delay.
receiver_.SetNackMode(kNack, -1, -1);
const size_t kMaxNackListSize = 1000;
const int kMaxPacketAgeToNack = 1000;
const int kMaxNonDecodableDuration = 500;
const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
kMaxNonDecodableDuration + 500) / 1000;
const int kMinDelayMs = 500;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
kMaxNonDecodableDuration);
receiver_.SetMinReceiverDelay(kMinDelayMs);
int64_t key_frame_inserted = clock_->TimeInMilliseconds();
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
// Insert enough frames to have too long non-decodable sequence, except that
// we don't have any losses.
for (int i = 0; i < kMaxNonDecodableDurationFrames;
++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
// Insert an incomplete frame.
EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
// Advance time until it's time to decode the key frame.
clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
key_frame_inserted);
EXPECT_TRUE(DecodeNextFrame());
// Make sure we don't get a key frame request since the non-decodable duration
// is only one frame.
uint16_t nack_list[kMaxNackListSize];
uint16_t nack_list_length = 0;
VCMNackStatus ret = receiver_.NackList(nack_list, kMaxNackListSize,
&nack_list_length);
EXPECT_EQ(kNackOk, ret);
}
TEST_F(TestVCMReceiver, NonDecodableDuration_KeyFrameAfterIncompleteFrames) {
// Enable NACK and with no RTT thresholds for disabling retransmission delay.
receiver_.SetNackMode(kNack, -1, -1);
const size_t kMaxNackListSize = 1000;
const int kMaxPacketAgeToNack = 1000;
const int kMaxNonDecodableDuration = 500;
const int kMaxNonDecodableDurationFrames = (kDefaultFrameRate *
kMaxNonDecodableDuration + 500) / 1000;
const int kMinDelayMs = 500;
receiver_.SetNackSettings(kMaxNackListSize, kMaxPacketAgeToNack,
kMaxNonDecodableDuration);
receiver_.SetMinReceiverDelay(kMinDelayMs);
int64_t key_frame_inserted = clock_->TimeInMilliseconds();
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
// Insert an incomplete frame.
EXPECT_GE(InsertFrame(kVideoFrameDelta, false), kNoError);
// Insert enough frames to have too long non-decodable sequence.
for (int i = 0; i < kMaxNonDecodableDurationFrames;
++i) {
EXPECT_GE(InsertFrame(kVideoFrameDelta, true), kNoError);
}
EXPECT_GE(InsertFrame(kVideoFrameKey, true), kNoError);
// Advance time until it's time to decode the key frame.
clock_->AdvanceTimeMilliseconds(kMinDelayMs - clock_->TimeInMilliseconds() -
key_frame_inserted);
EXPECT_TRUE(DecodeNextFrame());
// Make sure we don't get a key frame request since we have a key frame
// in the list.
uint16_t nack_list[kMaxNackListSize];
uint16_t nack_list_length = 0;
VCMNackStatus ret = receiver_.NackList(nack_list, kMaxNackListSize,
&nack_list_length);
EXPECT_EQ(kNackOk, ret);
}
} // namespace webrtc
|
