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flaky EndToEndTest.DecodesRetransmittedFrame adjusted

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to be aware about rare situation where packet resend before sent:

Expectations reduced by validating frame was rendered after or before last
packet for that frame was dropped.

BUG=webrtc:5540

Review-Url: https://codereview.webrtc.org/2180903002
Cr-Commit-Position: refs/heads/master@{#13523}
This commit is contained in:
danilchap 2016-07-25 08:20:51 -07:00 committed by Commit bot
parent fdd381c163
commit 192717ee1a
1 changed files with 16 additions and 7 deletions
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23
webrtc/video/end_to_end_tests.cc
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@ -768,8 +768,7 @@ void EndToEndTest::DecodesRetransmittedFrame(bool enable_rtx, bool enable_red) {
retransmission_payload_type_(GetPayloadType(enable_rtx, enable_red)),
encoder_(VideoEncoder::Create(VideoEncoder::EncoderType::kVp8)),
marker_bits_observed_(0),
retransmitted_timestamp_(0),
frame_retransmitted_(false) {}
retransmitted_timestamp_(0) {}
private:
Action OnSendRtp(const uint8_t* packet, size_t length) override {
@ -787,7 +786,6 @@ void EndToEndTest::DecodesRetransmittedFrame(bool enable_rtx, bool enable_red) {
if (header.timestamp == retransmitted_timestamp_) {
EXPECT_EQ(retransmission_ssrc_, header.ssrc);
EXPECT_EQ(retransmission_payload_type_, header.payloadType);
frame_retransmitted_ = true;
return SEND_PACKET;
}
@ -798,6 +796,18 @@ void EndToEndTest::DecodesRetransmittedFrame(bool enable_rtx, bool enable_red) {
// This should be the only dropped packet.
EXPECT_EQ(0u, retransmitted_timestamp_);
retransmitted_timestamp_ = header.timestamp;
if (std::find(rendered_timestamps_.begin(), rendered_timestamps_.end(),
retransmitted_timestamp_) != rendered_timestamps_.end()) {
// Frame was rendered before last packet was scheduled for sending.
// This is extremly rare but possible scenario because prober able to
// resend packet before it was send.
// TODO(danilchap): Remove this corner case when prober would not be
// able to sneak in between packet saved to history for resending and
// pacer notified about existance of that packet for sending.
// See https://bugs.chromium.org/p/webrtc/issues/detail?id=5540 for
// details.
observation_complete_.Set();
}
return DROP_PACKET;
}
@ -806,10 +816,9 @@ void EndToEndTest::DecodesRetransmittedFrame(bool enable_rtx, bool enable_red) {
void FrameCallback(VideoFrame* frame) override {
rtc::CritScope lock(&crit_);
if (frame->timestamp() == retransmitted_timestamp_) {
EXPECT_TRUE(frame_retransmitted_);
if (frame->timestamp() == retransmitted_timestamp_)
observation_complete_.Set();
}
rendered_timestamps_.push_back(frame->timestamp());
}
void ModifyVideoConfigs(
@ -872,7 +881,7 @@ void EndToEndTest::DecodesRetransmittedFrame(bool enable_rtx, bool enable_red) {
const std::string payload_name_;
int marker_bits_observed_;
uint32_t retransmitted_timestamp_ GUARDED_BY(&crit_);
bool frame_retransmitted_;
std::vector<uint32_t> rendered_timestamps_ GUARDED_BY(&crit_);
} test(enable_rtx, enable_red);
RunBaseTest(&test);