5259744145
Allows for swtiching/setting interpolation filters at the MB level. A frame level flag indicates whether to use a specifc filter for the entire frame or to signal the interpolation filter for each MB. When switchable filters are used, the encoder chooses between 8-tap and 8-tap sharp filters. The code currently has options to explore other variations as well, which will be cleaned up subsequently. One issue with the framework is that encoding is slow. I tried to do some tricks to speed things up but it is still slow. Decoding speed should not be affected since the number of filter taps remain unchanged. With the current version, we are up 0.5% on derf on average but some videos city/mobile improve by close to 4 and 2% respectively. If we did a full-search by turning the SEARCH_BEST_FILTER flag on, the results are somewhat better. The framework can be combined with filtered prediction, and I seek feedback regarding that. Rebased. Change-Id: I8f632cb2c111e76284140a2bd480945d6d42b77a
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
/*
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* Copyright (c) 2012 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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#include "type_aliases.h"
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#include "onyxc_int.h"
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#include "vp8/common/blockd.h"
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#ifndef __INC_PRED_COMMON_H__
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#define __INC_PRED_COMMON_H__ 1
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// Predicted items
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typedef enum {
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PRED_SEG_ID = 0, // Segment identifier
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PRED_REF = 1,
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PRED_COMP = 2,
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PRED_MBSKIP = 3,
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#if CONFIG_SWITCHABLE_INTERP
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PRED_SWITCHABLE_INTERP = 4,
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#endif
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} PRED_ID;
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extern unsigned char get_pred_context(VP8_COMMON *const cm,
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MACROBLOCKD *const xd,
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PRED_ID pred_id);
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extern vp8_prob get_pred_prob(VP8_COMMON *const cm,
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MACROBLOCKD *const xd,
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PRED_ID pred_id);
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extern vp8_prob *get_pred_probs(VP8_COMMON *const cm,
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MACROBLOCKD *const xd,
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PRED_ID pred_id);
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extern unsigned char get_pred_flag(MACROBLOCKD *const xd,
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PRED_ID pred_id);
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extern void set_pred_flag(MACROBLOCKD *const xd,
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PRED_ID pred_id,
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unsigned char pred_flag);
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extern unsigned char get_pred_mb_segid(VP8_COMMON *const cm, int MbIndex);
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extern MV_REFERENCE_FRAME get_pred_ref(VP8_COMMON *const cm,
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MACROBLOCKD *const xd);
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extern void compute_mod_refprobs(VP8_COMMON *const cm);
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#endif /* __INC_PRED_COMMON_H__ */
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