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| author | Marco <marpan@google.com> | 2017-12-06 11:21:29 -0800 |
|---|---|---|
| committer | Marco <marpan@google.com> | 2017-12-06 12:01:24 -0800 |
| commit | 3562d6b0a2cfccb1fb8fc18f065089f00d300216 (patch) | |
| tree | c0cfafb4230bafb37e508c507d2d740fd7b53587 /vp9 | |
| parent | 575c1933ea52314b9c17770a4ed7032dcd477ec3 (diff) | |
| download | libvpx-3562d6b0a2cfccb1fb8fc18f065089f00d300216.tar libvpx-3562d6b0a2cfccb1fb8fc18f065089f00d300216.tar.gz libvpx-3562d6b0a2cfccb1fb8fc18f065089f00d300216.tar.bz2 libvpx-3562d6b0a2cfccb1fb8fc18f065089f00d300216.zip | |
vp9-svc: Set downsampling filter for VGA layer.
Downsampling filter for SVC was set to subsample (phase 0)
for HD -> VGA, and bilinear averaging (phase 8) for VGA -> QVGA.
This change makes it bilinear averaging for HD -> VGA.
Given the recent commit 9f9d4f8, quality is improved with
this change: avgPSNR/SSIM up ~1-3% on HD clips in RTC set.
Speed decrease of ~1% for 3 layer SVC.
Change-Id: If834a320e372b8b922a6bf7cab4227703b1beae6
Diffstat (limited to 'vp9')
| -rw-r--r-- | vp9/encoder/vp9_svc_layercontext.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/vp9/encoder/vp9_svc_layercontext.c b/vp9/encoder/vp9_svc_layercontext.c index 38895be68..d215cf64a 100644 --- a/vp9/encoder/vp9_svc_layercontext.c +++ b/vp9/encoder/vp9_svc_layercontext.c @@ -656,9 +656,9 @@ int vp9_one_pass_cbr_svc_start_layer(VP9_COMP *const cpi) { lc->scaling_factor_num, lc->scaling_factor_den, &width, &height); - // For resolutions <= QVGA: set phase of the filter = 8 (for symmetric + // For resolutions <= VGA: set phase of the filter = 8 (for symmetric // averaging filter), use bilinear for now. - if (width * height <= 320 * 240) { + if (width * height <= 640 * 480) { cpi->svc.downsample_filter_type[cpi->svc.spatial_layer_id] = BILINEAR; cpi->svc.downsample_filter_phase[cpi->svc.spatial_layer_id] = 8; } |