6fa47a5f16
using an 8-tap filter. The results with 3 different 8-tap filters on the derf set are in: http://www.corp.google.com/~debargha/vp8_results/enhinterp.html The one that gives the most gain achieves an overall gain of about 0.6%. The results for a set of 12 hd (720p) videos are in: http://www.corp.google.com/~debargha/vp8_results/enhinterp_hd.html with max gain of 0.55% with the same filter. The best filter apparently achieves the best trade-off between pass band ripple and stop band attenuation. Change-Id: I919e28ae245c0493147fa0864f8c9d048a9dd530
25 lines
720 B
C
25 lines
720 B
C
/*
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* Copyright (c) 2011 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef FILTER_H
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#define FILTER_H
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#include "vpx_config.h"
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#include "vpx_scale/yv12config.h"
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#define BLOCK_HEIGHT_WIDTH 4
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#define VP8_FILTER_WEIGHT 128
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#define VP8_FILTER_SHIFT 7
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extern const short vp8_bilinear_filters[8][2];
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extern const short vp8_sub_pel_filters[8][INTERP_EXTEND*2];
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#endif //FILTER_H
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