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Various VP9 high fps fixes

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- Enable flexible mode in loopback tools and quality tests
- Ensure duplicate references are not set by the sender in video header
- Reset first active spatial layer on keyframe in encoder
- Make vp9 encoder to not generate spatial references for first active
  layer with external reference control in svc flexible mode

Bug: webrtc:10049
Change-Id: If9ff576ea8a1a2fef6116b17b5b5adff08c5f8c6
Reviewed-on: https://webrtc-review.googlesource.com/c/112080
Commit-Queue: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25795}
This commit is contained in:
Ilya Nikolaevskiy
2018-11-27 11:42:08 +01:00
committed by Commit Bot
parent af52b68116
commit ba2840ce4e
6 changed files with 57 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
modules/video_coding/codecs/vp9/svc_config.cc
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@ -22,9 +22,9 @@ namespace webrtc {
namespace {
const size_t kMinVp9SvcBitrateKbps = 30;
const size_t kMaxNumLayersForScreenSharing = 2;
const float kMaxScreenSharingLayerFramerateFps[] = {5.0, 5.0};
const size_t kMaxScreenSharingLayerBitrateKbps[] = {200, 500};
const size_t kMaxNumLayersForScreenSharing = 3;
const float kMaxScreenSharingLayerFramerateFps[] = {5.0, 5.0, 30.0};
const size_t kMaxScreenSharingLayerBitrateKbps[] = {200, 500, 1250};
} // namespace
std::vector<SpatialLayer> ConfigureSvcScreenSharing(size_t input_width,

7
modules/video_coding/codecs/vp9/svc_config_unittest.cc
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@ -49,12 +49,13 @@ TEST(SvcConfig, ScreenSharing) {
std::vector<SpatialLayer> spatial_layers =
GetSvcConfig(1920, 1080, 30, 3, 3, true);
EXPECT_EQ(spatial_layers.size(), 2UL);
EXPECT_EQ(spatial_layers.size(), 3UL);
for (const SpatialLayer& layer : spatial_layers) {
for (size_t i = 0; i < 3; ++i) {
const SpatialLayer& layer = spatial_layers[i];
EXPECT_EQ(layer.width, 1920);
EXPECT_EQ(layer.height, 1080);
EXPECT_EQ(layer.maxFramerate, 5);
EXPECT_EQ(layer.maxFramerate, (i < 2) ? 5 : 30);
EXPECT_EQ(layer.numberOfTemporalLayers, 1);
EXPECT_LE(layer.minBitrate, layer.maxBitrate);
EXPECT_LE(layer.minBitrate, layer.targetBitrate);

2
modules/video_coding/codecs/vp9/svc_rate_allocator_unittest.cc
View File

@ -149,7 +149,7 @@ TEST(SvcRateAllocatorTest, MinBitrateToGetQualityLayer) {
const SpatialLayer* layers = codec.spatialLayers;
EXPECT_LE(codec.VP9()->numberOfSpatialLayers, 2U);
EXPECT_LE(codec.VP9()->numberOfSpatialLayers, 3U);
VideoBitrateAllocation allocation =
allocator.GetAllocation(layers[0].minBitrate * 1000, 30);

65
modules/video_coding/codecs/vp9/vp9_impl.cc
View File

@ -696,30 +696,33 @@ int VP9EncoderImpl::Encode(const VideoFrame& input_image,
}
}
if (VideoCodecMode::kScreensharing == codec_.mode && !force_key_frame_) {
// Skip encoding spatial layer frames if their target frame rate is lower
// than actual input frame rate.
size_t first_active_spatial_layer_id = 0;
if (VideoCodecMode::kScreensharing == codec_.mode) {
vpx_svc_layer_id_t layer_id = {0};
const size_t gof_idx = (pics_since_key_ + 1) % gof_.num_frames_in_gof;
layer_id.temporal_layer_id = gof_.temporal_idx[gof_idx];
if (!force_key_frame_) {
// Skip encoding spatial layer frames if their target frame rate is lower
// than actual input frame rate.
const size_t gof_idx = (pics_since_key_ + 1) % gof_.num_frames_in_gof;
layer_id.temporal_layer_id = gof_.temporal_idx[gof_idx];
const uint32_t frame_timestamp_ms =
1000 * input_image.timestamp() / kVideoPayloadTypeFrequency;
const uint32_t frame_timestamp_ms =
1000 * input_image.timestamp() / kVideoPayloadTypeFrequency;
for (uint8_t sl_idx = 0; sl_idx < num_active_spatial_layers_; ++sl_idx) {
if (framerate_controller_[sl_idx].DropFrame(frame_timestamp_ms)) {
++layer_id.spatial_layer_id;
} else {
break;
for (uint8_t sl_idx = 0; sl_idx < num_active_spatial_layers_; ++sl_idx) {
if (framerate_controller_[sl_idx].DropFrame(frame_timestamp_ms)) {
++layer_id.spatial_layer_id;
} else {
break;
}
}
RTC_DCHECK_LE(layer_id.spatial_layer_id, num_active_spatial_layers_);
if (layer_id.spatial_layer_id >= num_active_spatial_layers_) {
// Drop entire picture.
return WEBRTC_VIDEO_CODEC_OK;
}
}
RTC_DCHECK_LE(layer_id.spatial_layer_id, num_active_spatial_layers_);
if (layer_id.spatial_layer_id >= num_active_spatial_layers_) {
// Drop entire picture.
return WEBRTC_VIDEO_CODEC_OK;
}
first_active_spatial_layer_id = layer_id.spatial_layer_id;
vpx_codec_control(encoder_, VP9E_SET_SVC_LAYER_ID, &layer_id);
}
@ -780,7 +783,8 @@ int VP9EncoderImpl::Encode(const VideoFrame& input_image,
}
if (external_ref_control_) {
vpx_svc_ref_frame_config_t ref_config = SetReferences(force_key_frame_);
vpx_svc_ref_frame_config_t ref_config =
SetReferences(force_key_frame_, first_active_spatial_layer_id);
if (VideoCodecMode::kScreensharing == codec_.mode) {
for (uint8_t sl_idx = 0; sl_idx < num_active_spatial_layers_; ++sl_idx) {
@ -985,6 +989,8 @@ void VP9EncoderImpl::FillReferenceIndices(const vpx_codec_cx_pkt& pkt,
size_t max_ref_temporal_layer_id = 0;
std::vector<size_t> ref_pid_list;
vp9_info->num_ref_pics = 0;
for (const RefFrameBuffer& ref_buf : ref_buf_list) {
RTC_DCHECK_LE(ref_buf.pic_num, pic_num);
@ -997,6 +1003,16 @@ void VP9EncoderImpl::FillReferenceIndices(const vpx_codec_cx_pkt& pkt,
}
RTC_DCHECK_LE(ref_buf.temporal_layer_id, layer_id.temporal_layer_id);
// Encoder may reference several spatial layers on the same previous
// frame in case if some spatial layers are skipped on the current frame.
// We shouldn't put duplicate references as it may break some old
// clients and isn't RTP compatible.
if (std::find(ref_pid_list.begin(), ref_pid_list.end(),
ref_buf.pic_num) != ref_pid_list.end()) {
continue;
}
ref_pid_list.push_back(ref_buf.pic_num);
const size_t p_diff = pic_num - ref_buf.pic_num;
RTC_DCHECK_LE(p_diff, 127UL);
@ -1061,7 +1077,9 @@ void VP9EncoderImpl::UpdateReferenceBuffers(const vpx_codec_cx_pkt& pkt,
}
}
vpx_svc_ref_frame_config_t VP9EncoderImpl::SetReferences(bool is_key_pic) {
vpx_svc_ref_frame_config_t VP9EncoderImpl::SetReferences(
bool is_key_pic,
size_t first_active_spatial_layer_id) {
// kRefBufIdx, kUpdBufIdx need to be updated to support longer GOFs.
RTC_DCHECK_LE(gof_.num_frames_in_gof, 4);
@ -1113,13 +1131,14 @@ vpx_svc_ref_frame_config_t VP9EncoderImpl::SetReferences(bool is_key_pic) {
}
}
if (is_inter_layer_pred_allowed && sl_idx > 0) {
if (is_inter_layer_pred_allowed && sl_idx > first_active_spatial_layer_id) {
// Set up spatial reference.
RTC_DCHECK(last_updated_buf_idx);
ref_config.gld_fb_idx[sl_idx] = *last_updated_buf_idx;
ref_config.reference_golden[sl_idx] = 1;
} else {
RTC_DCHECK(ref_config.reference_last[sl_idx] != 0 || sl_idx == 0 ||
RTC_DCHECK(ref_config.reference_last[sl_idx] != 0 ||
sl_idx == first_active_spatial_layer_id ||
inter_layer_pred_ == InterLayerPredMode::kOff);
}

4
modules/video_coding/codecs/vp9/vp9_impl.h
View File

@ -70,7 +70,9 @@ class VP9EncoderImpl : public VP9Encoder {
CodecSpecificInfoVP9* vp9_info);
void UpdateReferenceBuffers(const vpx_codec_cx_pkt& pkt,
const size_t pic_num);
vpx_svc_ref_frame_config_t SetReferences(bool is_key_pic);
vpx_svc_ref_frame_config_t SetReferences(
bool is_key_pic,
size_t first_active_spatial_layer_id);
bool ExplicitlyConfiguredSpatialLayers() const;
bool SetSvcRates(const VideoBitrateAllocation& bitrate_allocation);

4
video/video_quality_test.cc
View File

@ -670,6 +670,10 @@ void VideoQualityTest::SetupVideo(Transport* send_transport,
vp9_settings.numberOfSpatialLayers = static_cast<unsigned char>(
params_.ss[video_idx].num_spatial_layers);
vp9_settings.interLayerPred = params_.ss[video_idx].inter_layer_pred;
// High FPS vp9 screenshare requires flexible mode.
if (params_.video[video_idx].fps > 5) {
vp9_settings.flexibleMode = true;
}
video_encoder_configs_[video_idx].encoder_specific_settings =
new rtc::RefCountedObject<
VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);