Added RTCMediaStreamTrackStats.concealmentEvents
The number of concealment events. This counter increases every time a concealed sample is
synthesized after a non-concealed sample. That is, multiple consecutive concealed samples
will increase the concealedSamples count multiple times but is a single concealment event.
Bug: webrtc:8246
Change-Id: I7ef404edab765218b1f11e3128072c5391e83049
Reviewed-on: https://webrtc-review.googlesource.com/1221
Commit-Queue: Gustaf Ullberg <gustaf@webrtc.org>
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Reviewed-by: Fredrik Solenberg <solenberg@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Reviewed-by: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19881}diff --git a/modules/audio_coding/neteq/neteq_unittest.cc b/modules/audio_coding/neteq/neteq_unittest.cc
index 657b8ed..764a505 100644
--- a/modules/audio_coding/neteq/neteq_unittest.cc
+++ b/modules/audio_coding/neteq/neteq_unittest.cc
@@ -1634,4 +1634,38 @@
neteq_->LastDecodedTimestamps());
}
+TEST_F(NetEqDecodingTest, TestConcealmentEvents) {
+ const int kNumConcealmentEvents = 19;
+ const size_t kSamples = 10 * 16;
+ const size_t kPayloadBytes = kSamples * 2;
+ int seq_no = 0;
+ RTPHeader rtp_info;
+ rtp_info.ssrc = 0x1234; // Just an arbitrary SSRC.
+ rtp_info.payloadType = 94; // PCM16b WB codec.
+ rtp_info.markerBit = 0;
+ const uint8_t payload[kPayloadBytes] = {0};
+ bool muted;
+
+ for (int i = 0; i < kNumConcealmentEvents; i++) {
+ // Insert some packets of 10 ms size.
+ for (int j = 0; j < 10; j++) {
+ rtp_info.sequenceNumber = seq_no++;
+ rtp_info.timestamp = rtp_info.sequenceNumber * kSamples;
+ neteq_->InsertPacket(rtp_info, payload, 0);
+ neteq_->GetAudio(&out_frame_, &muted);
+ }
+
+ // Lose a number of packets.
+ int num_lost = 1 + i;
+ for (int j = 0; j < num_lost; j++) {
+ seq_no++;
+ neteq_->GetAudio(&out_frame_, &muted);
+ }
+ }
+
+ // Check number of concealment events.
+ NetEqLifetimeStatistics stats = neteq_->GetLifetimeStatistics();
+ EXPECT_EQ(kNumConcealmentEvents, static_cast<int>(stats.concealment_events));
+}
+
} // namespace webrtc