18e90d744e
This is the initial patch for supporting 1/8th pel motion. Currently if we configure with enable-high-precision-mv, all motion vectors would default to 1/8 pel. Encode and decode syncs fine with the current code. In the next phase the code will be refactored so that we can choose the 1/8 pel mode adaptively at a frame/segment/mb level. Derf results: http://www.corp.google.com/~debargha/vp8_results/enhinterp_hpmv.html (about 0.83% better than 8-tap interpoaltion) Patch 3: Rebased. Also adding 1/16th pel interpolation for U and V Patch 4: HD results. http://www.corp.google.com/~debargha/vp8_results/enhinterp_hd_hpmv.html Seems impressive (unless I am doing something wrong). Patch 5: Added mmx/sse for bilateral filtering, as well as enforced use of c-versions of subpel filters with 8-taps and 1/16th pel; Also redesigned the 8-tap filters to reduce the cut-off in order to introduce a denoising effect. There is a new configure option sixteenth-subpel-uv which will use 1/16 th pel interpolation for uv, if the motion vectors have 1/8 pel accuracy. With the fixes the results are promising on the derf set. The enhanced interpolation option with 8-taps alone gives 3% improvement over thei derf set: http://www.corp.google.com/~debargha/vp8_results/enhinterpn.html Results on high precision mv and on the hd set are to follow. Patch 6: Adding a missing condition for CONFIG_SIXTEENTH_SUBPEL_UV in vp8/common/x86/x86_systemdependent.c Patch 7: Cleaning up various debug messages. Patch 8: Merge conflict Change-Id: I5b1d844457aefd7414a9e4e0e06c6ed38fd8cc04
39 lines
1.1 KiB
C
39 lines
1.1 KiB
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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#if CONFIG_SIXTEENTH_SUBPEL_UV
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#define SUBPEL_SHIFTS 16
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#else
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#define SUBPEL_SHIFTS 8
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#endif
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extern const short vp8_bilinear_filters[SUBPEL_SHIFTS][2];
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extern const short vp8_sub_pel_filters[SUBPEL_SHIFTS][INTERP_EXTEND*2];
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/* whether to use a special filter for edge pixels */
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#define EDGE_PIXEL_FILTER 0
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#if EDGE_PIXEL_FILTER > 0
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#define EDGE_PIXEL_FILTER_EXTEND 2
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extern const short vp8_sub_pel_filters_ns[SUBPEL_SHIFTS*SUBPEL_SHIFTS][4*EDGE_PIXEL_FILTER_EXTEND*EDGE_PIXEL_FILTER_EXTEND];
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#endif
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#endif //FILTER_H
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