2013-01-25 18:47:09 +01:00
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/*
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* Copyright (c) 2013 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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2013-09-30 04:44:05 +02:00
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#ifndef VP9_COMMON_VP9_CONVOLVE_H_
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#define VP9_COMMON_VP9_CONVOLVE_H_
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2013-01-25 18:47:09 +01:00
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Implicit weighted prediction experiment
Adds an experiment to use a weighted prediction of two INTER
predictors, where the weight is one of (1/4, 3/4), (3/8, 5/8),
(1/2, 1/2), (5/8, 3/8) or (3/4, 1/4), and is chosen implicitly
based on consistency of the predictors to the already
reconstructed pixels to the top and left of the current macroblock
or superblock.
Currently the weighting is not applied to SPLITMV modes, which
default to the usual (1/2, 1/2) weighting. However the code is in
place controlled by a macro. The same weighting is used for Y and
UV components, where the weight is derived from analyzing the Y
component only.
Results (over compound inter-intra experiment)
derf: +0.18%
yt: +0.34%
hd: +0.49%
stdhd: +0.23%
The experiment suggests bigger benefit for explicitly signaled weights.
Change-Id: I5438539ff4485c5752874cd1eb078ff14bf5235a
2013-03-12 22:21:08 +01:00
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#include "./vpx_config.h"
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2013-01-25 18:47:09 +01:00
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#include "vpx/vpx_integer.h"
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2013-07-10 20:17:19 +02:00
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typedef void (*convolve_fn_t)(const uint8_t *src, ptrdiff_t src_stride,
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uint8_t *dst, ptrdiff_t dst_stride,
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2013-01-25 18:47:09 +01:00
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const int16_t *filter_x, int x_step_q4,
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const int16_t *filter_y, int y_step_q4,
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int w, int h);
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2013-09-30 04:44:05 +02:00
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#endif // VP9_COMMON_VP9_CONVOLVE_H_
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