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Revert "vp9: Avoid encoder loopfilter for non-reference frames."

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This reverts commit 863f860bfcf3bdc26eeecb299aa481d0f63d11ac.

This causes encoder / decoder mismatches in various
VP9/DatarateTestVP9Large.BasicRateTargeting3TemporalLayers tests

BUG=webm:1408

Change-Id: Ic200c39d7ed9c0b0247ef562f5d6f7b2625f7e14
This commit is contained in:
James Zern 2017-04-14 11:28:25 -07:00
parent b937f1c839
commit e9b7f98c56
2 changed files with 31 additions and 54 deletions
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79
test/datarate_test.cc
View File

@ -1221,10 +1221,9 @@ static void assign_layer_bitrates(vpx_codec_enc_cfg_t *const enc_cfg,
} }
} }
// Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and 1 // Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and 1temporal
// temporal layer, with screen content mode on and same speed setting for all // layer, with screen content mode on and same speed setting for all layers.
// layers. TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2patialLayersScreenContent1) {
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL1TLScreenContent1) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1242,7 +1241,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL1TLScreenContent1) {
svc_params_.scaling_factor_den[0] = 288; svc_params_.scaling_factor_den[0] = 288;
svc_params_.scaling_factor_num[1] = 288; svc_params_.scaling_factor_num[1] = 288;
svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_den[1] = 288;
cfg_.rc_dropframe_thresh = 10; cfg_.rc_dropframe_thresh = 0;
cfg_.kf_max_dist = 9999; cfg_.kf_max_dist = 9999;
::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300); ::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300);
cfg_.rc_target_bitrate = 500; cfg_.rc_target_bitrate = 500;
@ -1257,7 +1256,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL1TLScreenContent1) {
// Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and // Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and
// 3 temporal layers. Run CIF clip with 1 thread. // 3 temporal layers. Run CIF clip with 1 thread.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TL) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SpatialLayers) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1277,7 +1276,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TL) {
svc_params_.scaling_factor_den[0] = 288; svc_params_.scaling_factor_den[0] = 288;
svc_params_.scaling_factor_num[1] = 288; svc_params_.scaling_factor_num[1] = 288;
svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_den[1] = 288;
cfg_.rc_dropframe_thresh = 0; cfg_.rc_dropframe_thresh = 10;
cfg_.kf_max_dist = 9999; cfg_.kf_max_dist = 9999;
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288, ::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 200); 30, 1, 0, 200);
@ -1289,21 +1288,17 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TL) {
assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers, assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers,
cfg_.ts_number_layers, cfg_.temporal_layering_mode); cfg_.ts_number_layers, cfg_.temporal_layering_mode);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video)); ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.82) ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.85)
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
// Number of temporal layers > 1, so half of the frames in this SVC pattern EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
// will be non-reference frame and hence encoder will avoid loopfilter.
// Since frame dropper is off, we can expcet 100 (half of the sequence)
// mismatched frames.
EXPECT_EQ(static_cast<unsigned int>(100), GetMismatchFrames());
} }
} }
// Check basic rate targeting for 1 pass CBR SVC with denoising. // Check basic rate targeting for 1 pass CBR SVC with denoising.
// 2 spatial layers and 3 temporal layer. Run HD clip with 2 threads. // 2 spatial layers and 3 temporal layer. Run HD clip with 2 threads.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TLDenoiserOn) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SpatialLayersDenoiserOn) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1323,7 +1318,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TLDenoiserOn) {
svc_params_.scaling_factor_den[0] = 288; svc_params_.scaling_factor_den[0] = 288;
svc_params_.scaling_factor_num[1] = 288; svc_params_.scaling_factor_num[1] = 288;
svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_den[1] = 288;
cfg_.rc_dropframe_thresh = 0; cfg_.rc_dropframe_thresh = 10;
cfg_.kf_max_dist = 9999; cfg_.kf_max_dist = 9999;
::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300); ::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300);
// TODO(marpan): Check that effective_datarate for each layer hits the // TODO(marpan): Check that effective_datarate for each layer hits the
@ -1335,21 +1330,17 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TLDenoiserOn) {
assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers, assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers,
cfg_.ts_number_layers, cfg_.temporal_layering_mode); cfg_.ts_number_layers, cfg_.temporal_layering_mode);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video)); ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.82) ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.85)
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
// Number of temporal layers > 1, so half of the frames in this SVC pattern EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
// will be non-reference frame and hence encoder will avoid loopfilter.
// Since frame dropper is off, we can expcet 150 (half of the sequence)
// mismatched frames.
EXPECT_EQ(static_cast<unsigned int>(150), GetMismatchFrames());
} }
} }
// Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and 3 // Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and 3
// temporal layers. Run CIF clip with 1 thread, and few short key frame periods. // temporal layers. Run CIF clip with 1 thread, and few short key frame periods.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TLSmallKf) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SpatialLayersSmallKf) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1385,12 +1376,13 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TLSmallKf) {
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
} }
} }
// Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and // Check basic rate targeting for 1 pass CBR SVC: 2 spatial layers and
// 3 temporal layers. Run HD clip with 4 threads. // 3 temporal layers. Run HD clip with 4 threads.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TL4threads) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SpatialLayers4threads) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1410,7 +1402,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TL4threads) {
svc_params_.scaling_factor_den[0] = 288; svc_params_.scaling_factor_den[0] = 288;
svc_params_.scaling_factor_num[1] = 288; svc_params_.scaling_factor_num[1] = 288;
svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_den[1] = 288;
cfg_.rc_dropframe_thresh = 0; cfg_.rc_dropframe_thresh = 10;
cfg_.kf_max_dist = 9999; cfg_.kf_max_dist = 9999;
::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300); ::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300);
cfg_.rc_target_bitrate = 800; cfg_.rc_target_bitrate = 800;
@ -1418,20 +1410,16 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL3TL4threads) {
assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers, assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers,
cfg_.ts_number_layers, cfg_.temporal_layering_mode); cfg_.ts_number_layers, cfg_.temporal_layering_mode);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video)); ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.82) ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.85)
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.15)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
// Number of temporal layers > 1, so half of the frames in this SVC pattern EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
// will be non-reference frame and hence encoder will avoid loopfilter.
// Since frame dropper is off, we can expcet 150 (half of the sequence)
// mismatched frames.
EXPECT_EQ(static_cast<unsigned int>(150), GetMismatchFrames());
} }
// Check basic rate targeting for 1 pass CBR SVC: 3 spatial layers and // Check basic rate targeting for 1 pass CBR SVC: 3 spatial layers and
// 3 temporal layers. Run CIF clip with 1 thread. // 3 temporal layers. Run CIF clip with 1 thread.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TL) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SpatialLayers) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1453,7 +1441,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TL) {
svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_den[1] = 288;
svc_params_.scaling_factor_num[2] = 288; svc_params_.scaling_factor_num[2] = 288;
svc_params_.scaling_factor_den[2] = 288; svc_params_.scaling_factor_den[2] = 288;
cfg_.rc_dropframe_thresh = 0; cfg_.rc_dropframe_thresh = 10;
cfg_.kf_max_dist = 9999; cfg_.kf_max_dist = 9999;
::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300); ::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300);
cfg_.rc_target_bitrate = 800; cfg_.rc_target_bitrate = 800;
@ -1461,20 +1449,16 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TL) {
assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers, assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers,
cfg_.ts_number_layers, cfg_.temporal_layering_mode); cfg_.ts_number_layers, cfg_.temporal_layering_mode);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video)); ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.82) ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.85)
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.22) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.22)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
// Number of temporal layers > 1, so half of the frames in this SVC pattern EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
// will be non-reference frame and hence encoder will avoid loopfilter.
// Since frame dropper is off, we can expcet 150 (half of the sequence)
// mismatched frames.
EXPECT_EQ(static_cast<unsigned int>(150), GetMismatchFrames());
} }
// Check basic rate targeting for 1 pass CBR SVC: 3 spatial layers and 3 // Check basic rate targeting for 1 pass CBR SVC: 3 spatial layers and 3
// temporal layers. Run CIF clip with 1 thread, and few short key frame periods. // temporal layers. Run CIF clip with 1 thread, and few short key frame periods.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TLSmallKf) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SpatialLayersSmallKf) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1511,12 +1495,13 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TLSmallKf) {
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.30) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.30)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
} }
} }
// Check basic rate targeting for 1 pass CBR SVC: 3 spatial layers and // Check basic rate targeting for 1 pass CBR SVC: 3 spatial layers and
// 3 temporal layers. Run HD clip with 4 threads. // 3 temporal layers. Run HD clip with 4 threads.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TL4threads) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SpatialLayers4threads) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1538,7 +1523,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TL4threads) {
svc_params_.scaling_factor_den[1] = 288; svc_params_.scaling_factor_den[1] = 288;
svc_params_.scaling_factor_num[2] = 288; svc_params_.scaling_factor_num[2] = 288;
svc_params_.scaling_factor_den[2] = 288; svc_params_.scaling_factor_den[2] = 288;
cfg_.rc_dropframe_thresh = 0; cfg_.rc_dropframe_thresh = 10;
cfg_.kf_max_dist = 9999; cfg_.kf_max_dist = 9999;
::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300); ::libvpx_test::Y4mVideoSource video("niklas_1280_720_30.y4m", 0, 300);
cfg_.rc_target_bitrate = 800; cfg_.rc_target_bitrate = 800;
@ -1546,20 +1531,16 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc3SL3TL4threads) {
assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers, assign_layer_bitrates(&cfg_, &svc_params_, cfg_.ss_number_layers,
cfg_.ts_number_layers, cfg_.temporal_layering_mode); cfg_.ts_number_layers, cfg_.temporal_layering_mode);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video)); ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.82) ASSERT_GE(cfg_.rc_target_bitrate, file_datarate_ * 0.85)
<< " The datarate for the file exceeds the target by too much!"; << " The datarate for the file exceeds the target by too much!";
ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.22) ASSERT_LE(cfg_.rc_target_bitrate, file_datarate_ * 1.22)
<< " The datarate for the file is lower than the target by too much!"; << " The datarate for the file is lower than the target by too much!";
// Number of temporal layers > 1, so half of the frames in this SVC pattern EXPECT_EQ(static_cast<unsigned int>(0), GetMismatchFrames());
// will be non-reference frame and hence encoder will avoid loopfilter.
// Since frame dropper is off, we can expcet 150 (half of the sequence)
// mismatched frames.
EXPECT_EQ(static_cast<unsigned int>(150), GetMismatchFrames());
} }
// Run SVC encoder for 1 temporal layer, 2 spatial layers, with spatial // Run SVC encoder for 1 temporal layer, 2 spatial layers, with spatial
// downscale 5x5. // downscale 5x5.
TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL1TL5x5MultipleRuns) { TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SpatialLayers5x5MultipleRuns) {
cfg_.rc_buf_initial_sz = 500; cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 500; cfg_.rc_buf_optimal_sz = 500;
cfg_.rc_buf_sz = 1000; cfg_.rc_buf_sz = 1000;
@ -1577,7 +1558,7 @@ TEST_P(DatarateOnePassCbrSvc, OnePassCbrSvc2SL1TL5x5MultipleRuns) {
svc_params_.scaling_factor_den[0] = 1280; svc_params_.scaling_factor_den[0] = 1280;
svc_params_.scaling_factor_num[1] = 1280; svc_params_.scaling_factor_num[1] = 1280;
svc_params_.scaling_factor_den[1] = 1280; svc_params_.scaling_factor_den[1] = 1280;
cfg_.rc_dropframe_thresh = 10; cfg_.rc_dropframe_thresh = 0;
cfg_.kf_max_dist = 999999; cfg_.kf_max_dist = 999999;
cfg_.kf_min_dist = 0; cfg_.kf_min_dist = 0;
cfg_.ss_target_bitrate[0] = 300; cfg_.ss_target_bitrate[0] = 300;

6
vp9/encoder/vp9_encoder.c
View File

@ -2618,10 +2618,6 @@ static void loopfilter_frame(VP9_COMP *cpi, VP9_COMMON *cm) {
MACROBLOCKD *xd = &cpi->td.mb.e_mbd; MACROBLOCKD *xd = &cpi->td.mb.e_mbd;
struct loopfilter *lf = &cm->lf; struct loopfilter *lf = &cm->lf;
const int is_reference_frame =
(cpi->refresh_last_frame || cpi->refresh_golden_frame ||
cpi->refresh_alt_ref_frame);
if (xd->lossless) { if (xd->lossless) {
lf->filter_level = 0; lf->filter_level = 0;
lf->last_filt_level = 0; lf->last_filt_level = 0;
@ -2647,7 +2643,7 @@ static void loopfilter_frame(VP9_COMP *cpi, VP9_COMMON *cm) {
cpi->time_pick_lpf += vpx_usec_timer_elapsed(&timer); cpi->time_pick_lpf += vpx_usec_timer_elapsed(&timer);
} }
if (lf->filter_level > 0 && is_reference_frame) { if (lf->filter_level > 0) {
vp9_build_mask_frame(cm, lf->filter_level, 0); vp9_build_mask_frame(cm, lf->filter_level, 0);
if (cpi->num_workers > 1) if (cpi->num_workers > 1)