1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*===========================================================================*
* search.h *
* *
* stuff dealing with the motion search *
* *
*===========================================================================*/
/*
* Copyright (c) 1995 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/*
* $Header: /n/picasso/project/mpeg/mpeg_dist/mpeg_encode/headers/RCS/search.h,v 1.6 1995/08/15 23:43:36 smoot Exp $
* $Log: search.h,v $
* Revision 1.6 1995/08/15 23:43:36 smoot
* *** empty log message ***
*
* Revision 1.5 1995/01/19 23:55:20 eyhung
* Changed copyrights
*
* Revision 1.4 1994/12/07 00:42:01 smoot
* Added seperate P and B search ranges
*
* Revision 1.3 1994/11/12 02:12:58 keving
* nothing
*
* Revision 1.2 1993/07/22 22:24:23 keving
* nothing
*
* Revision 1.1 1993/07/09 00:17:23 keving
* nothing
*
*/
/*==============*
* HEADER FILES *
*==============*/
#include "ansi.h"
/*===========*
* CONSTANTS *
*===========*/
#define PSEARCH_SUBSAMPLE 0
#define PSEARCH_EXHAUSTIVE 1
#define PSEARCH_LOGARITHMIC 2
#define PSEARCH_TWOLEVEL 3
#define BSEARCH_EXHAUSTIVE 0
#define BSEARCH_CROSS2 1
#define BSEARCH_SIMPLE 2
/*========*
* MACROS *
*========*/
#define COMPUTE_MOTION_BOUNDARY(by,bx,stepSize,leftMY,leftMX,rightMY,rightMX)\
leftMY = -2*DCTSIZE*by; /* these are valid motion vectors */ \
leftMX = -2*DCTSIZE*bx; \
/* these are invalid motion vectors */ \
rightMY = 2*(Fsize_y - (by+2)*DCTSIZE + 1) - 1; \
rightMX = 2*(Fsize_x - (bx+2)*DCTSIZE + 1) - 1; \
\
if ( stepSize == 2 ) { \
rightMY++; \
rightMX++; \
}
#define VALID_MOTION(y,x) \
(((y) >= leftMY) && ((y) < rightMY) && \
((x) >= leftMX) && ((x) < rightMX) )
/*===============================*
* EXTERNAL PROCEDURE prototypes *
*===============================*/
void SetPSearchAlg _ANSI_ARGS_((char *alg));
void SetBSearchAlg _ANSI_ARGS_((char *alg));
char *BSearchName _ANSI_ARGS_((void));
char *PSearchName _ANSI_ARGS_((void));
int32 PLogarithmicSearch _ANSI_ARGS_((LumBlock currentBlock,
MpegFrame *prev,
int by, int bx,
int *motionY, int *motionX, int searchRange));
int32 PSubSampleSearch _ANSI_ARGS_((LumBlock currentBlock,
MpegFrame *prev, int by, int bx,
int *motionY, int *motionX, int searchRange));
int32 PLocalSearch _ANSI_ARGS_((LumBlock currentBlock,
MpegFrame *prev, int by, int bx,
int *motionY, int *motionX,
int32 bestSoFar, int searchRange));
int32 PTwoLevelSearch _ANSI_ARGS_((LumBlock currentBlock,
MpegFrame *prev, int by, int bx,
int *motionY, int *motionX,
int32 bestSoFar, int searchRange));
boolean PMotionSearch _ANSI_ARGS_((LumBlock currentBlock,
MpegFrame *prev,
int by, int bx,
int *motionY, int *motionX));
/*==================*
* GLOBAL VARIABLES *
*==================*/
extern int psearchAlg;
|
