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
61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
|
|
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
|
|
#ifndef __INC_ENTROPYMV_H
|
|
#define __INC_ENTROPYMV_H
|
|
|
|
#include "treecoder.h"
|
|
#include "vpx_config.h"
|
|
|
|
#if CONFIG_HIGH_PRECISION_MV
|
|
#define MV_SHIFT 0
|
|
#else
|
|
#define MV_SHIFT 1
|
|
#endif
|
|
|
|
enum
|
|
{
|
|
#if CONFIG_HIGH_PRECISION_MV
|
|
mv_max = 2047, /* max absolute value of a MV component */
|
|
MVvals = (2 * mv_max) + 1, /* # possible values "" */
|
|
mvlong_width = 11, /* Large MVs have 9 bit magnitudes */
|
|
mvnum_short = 16, /* magnitudes 0 through 15 */
|
|
mvnum_short_bits = 4, /* number of bits for short mvs */
|
|
#else
|
|
mv_max = 1023, /* max absolute value of a MV component */
|
|
MVvals = (2 * mv_max) + 1, /* # possible values "" */
|
|
mvlong_width = 10, /* Large MVs have 9 bit magnitudes */
|
|
mvnum_short = 8, /* magnitudes 0 through 7 */
|
|
mvnum_short_bits = 3, /* number of bits for short mvs */
|
|
#endif
|
|
|
|
mvfp_max = 255, /* max absolute value of a full pixel MV component */
|
|
MVfpvals = (2 * mvfp_max) + 1, /* # possible full pixel MV values */
|
|
|
|
/* probability offsets for coding each MV component */
|
|
|
|
mvpis_short = 0, /* short (<= 7) vs long (>= 8) */
|
|
MVPsign, /* sign for non-zero */
|
|
MVPshort, /* 8 short values = 7-position tree */
|
|
|
|
MVPbits = MVPshort + mvnum_short - 1, /* mvlong_width long value bits */
|
|
MVPcount = MVPbits + mvlong_width /* (with independent probabilities) */
|
|
};
|
|
|
|
typedef struct mv_context
|
|
{
|
|
vp8_prob prob[MVPcount]; /* often come in row, col pairs */
|
|
} MV_CONTEXT;
|
|
|
|
extern const MV_CONTEXT vp8_mv_update_probs[2], vp8_default_mv_context[2];
|
|
|
|
#endif
|