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Reland "Updates tests for turning simulcast streams on/off."

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This is a reland of 8fb22e71ee9bd77676838c5723f7e89a74a64aa9.

Original change's description:
> Updates tests for turning simulcast streams on/off.
>
> Due to libvpx we were restricted to always turning the low simulcast
> stream on, or else the encoder would always label the active streams'
> encoded frames as key frames. Now that libvpx has been updated and
> rolled in, this change updates tests to reflect that it is working.
>
> Bug: webrtc:8653
> Change-Id: I065ef817ace2292605e27e135802cf4a3e90647e
> Reviewed-on: https://webrtc-review.googlesource.com/46340
> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
> Reviewed-by: Erik Språng <sprang@webrtc.org>
> Commit-Queue: Seth Hampson <shampson@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#21831}

TBR=sprang@webrtc.org

Bug: webrtc:8653
Change-Id: I32fa92649f3ff40b1e364f880040e52ae698f74d
Reviewed-on: https://webrtc-review.googlesource.com/46860
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org>
Commit-Queue: Seth Hampson <shampson@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21918}
This commit is contained in:
Seth Hampson
2018-01-30 10:31:07 -08:00
committed by Commit Bot
parent 29f14322d1
commit e2f69cfeef
1 changed files with 37 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

71
modules/video_coding/codecs/vp8/simulcast_test_utility.h
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@ -284,6 +284,23 @@ class TestVp8Simulcast : public ::testing::Test {
rate_allocator_->GetAllocation(bitrate_kbps * 1000, fps), fps);
}
void RunActiveStreamsTest(const std::vector<bool> active_streams) {
std::vector<FrameType> frame_types(kNumberOfSimulcastStreams,
kVideoFrameDelta);
UpdateActiveStreams(active_streams);
// Set sufficient bitrate for all streams so we can test active without
// bitrate being an issue.
SetRates(kMaxBitrates[0] + kMaxBitrates[1] + kMaxBitrates[2], 30);
ExpectStreams(kVideoFrameKey, active_streams);
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, &frame_types));
ExpectStreams(kVideoFrameDelta, active_streams);
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, &frame_types));
}
void UpdateActiveStreams(const std::vector<bool> active_streams) {
ASSERT_EQ(static_cast<int>(active_streams.size()),
kNumberOfSimulcastStreams);
@ -291,6 +308,10 @@ class TestVp8Simulcast : public ::testing::Test {
settings_.simulcastStream[i].active = active_streams[i];
}
// Re initialize the allocator and encoder with the new settings.
// TODO(bugs.webrtc.org/8807): Currently, we do a full "hard"
// reconfiguration of the allocator and encoder. When the video bitrate
// allocator has support for updating active streams without a
// reinitialization, we can just call that here instead.
SetUpRateAllocator();
EXPECT_EQ(0, encoder_->InitEncode(&settings_, 1, 1200));
}
@ -526,40 +547,22 @@ class TestVp8Simulcast : public ::testing::Test {
}
void TestActiveStreams() {
const int kEnoughBitrateAllStreams =
kMaxBitrates[0] + kMaxBitrates[1] + kMaxBitrates[2];
std::vector<FrameType> frame_types(kNumberOfSimulcastStreams,
kVideoFrameDelta);
// TODO(shampson): Currently turning off the base stream causes unexpected
// behavior in the libvpx encoder. The libvpx encoder labels key frames
// based upon the base stream. If the base stream is never enabled, it
// will continue to spit out encoded images labeled as key frames for the
// other streams that are enabled. Once this is fixed in libvpx, update this
// test to reflect that change.
// Only turn on the the base stream.
std::vector<bool> active_streams = {true, false, false};
UpdateActiveStreams(active_streams);
SetRates(kEnoughBitrateAllStreams, 30);
ExpectStreams(kVideoFrameKey, active_streams);
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, &frame_types));
ExpectStreams(kVideoFrameDelta, active_streams);
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, &frame_types));
// Turn off only the middle stream.
active_streams = {true, false, true};
UpdateActiveStreams(active_streams);
SetRates(kEnoughBitrateAllStreams, 30);
ExpectStreams(kVideoFrameKey, active_streams);
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, &frame_types));
ExpectStreams(kVideoFrameDelta, active_streams);
input_frame_->set_timestamp(input_frame_->timestamp() + 3000);
EXPECT_EQ(0, encoder_->Encode(*input_frame_, NULL, &frame_types));
// All streams on.
RunActiveStreamsTest({true, true, true});
// All streams off.
RunActiveStreamsTest({false, false, false});
// Low stream off.
RunActiveStreamsTest({false, true, true});
// Middle stream off.
RunActiveStreamsTest({true, false, true});
// High stream off.
RunActiveStreamsTest({true, true, false});
// Only low stream turned on.
RunActiveStreamsTest({true, false, false});
// Only middle stream turned on.
RunActiveStreamsTest({false, true, false});
// Only high stream turned on.
RunActiveStreamsTest({false, false, true});
}
void SwitchingToOneStream(int width, int height) {