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Testing and improving NADA algorithm.

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A modified operation mode was added, holding:
--- Stricter conditions for AcceleratedRampUp.
--- Smoother GradualRateUpdate adjustments.
--- New AcceleratedRampDown update mode.
This mode reduces significantly the delay for bitrates around its minimum bound.

Several NADA unittests and a few simulations were added.

Fixed LinkedSet bug.
Fixed IsNewerSequenceNumber/IsNewerTimestamp bug.

BUG=4550
R=stefan@webrtc.org, tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/54399004

Cr-Commit-Position: refs/heads/master@{#9340}
This commit is contained in:
Cesar Magalhaes
2015-05-30 17:49:18 +02:00
parent 4765070b8d
commit f69f1fbc98
7 changed files with 825 additions and 129 deletions
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9
webrtc/modules/audio_coding/neteq/packet_buffer_unittest.cc
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@ -531,9 +531,14 @@ void TestIsObsoleteTimestamp(uint32_t limit_timestamp) {
// 1 sample ahead is not old.
EXPECT_FALSE(PacketBuffer::IsObsoleteTimestamp(
limit_timestamp + 1, limit_timestamp, kZeroHorizon));
// 2^31 samples ahead is not old.
// If |t1-t2|=2^31 and t1>t2, t2 is older than t1 but not the opposite.
uint32_t other_timestamp = limit_timestamp + (1 << 31);
uint32_t lowest_timestamp = std::min(limit_timestamp, other_timestamp);
uint32_t highest_timestamp = std::max(limit_timestamp, other_timestamp);
EXPECT_TRUE(PacketBuffer::IsObsoleteTimestamp(
lowest_timestamp, highest_timestamp, kZeroHorizon));
EXPECT_FALSE(PacketBuffer::IsObsoleteTimestamp(
limit_timestamp + (1 << 31), limit_timestamp, kZeroHorizon));
highest_timestamp, lowest_timestamp, kZeroHorizon));
// Fixed horizon at 10 samples.
static const uint32_t kHorizon = 10;