src/vidstabdefines.h

   1 /*
   2  * vidstabdefines.h
   3  *
   4  *  Created on: Feb 23, 2011
   5  *      Author: georg
   6  *
   7  *  This file is part of vid.stab video stabilization library
   8  *
   9  *  vid.stab is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License,
  11  *  as published by the Free Software Foundation; either version 2, or
  12  *  (at your option) any later version.
  13  *
  14  *  vid.stab is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with GNU Make; see the file COPYING.  If not, write to
  21  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  *
  24 */
  25
  26 #ifndef VIDSTABDEFINES_H_
  27 #define VIDSTABDEFINES_H_
  28
  29 #include <stddef.h>
  30 #include <stdlib.h>
  31
  32 #ifdef __GNUC__
  33 #define likely(x)       __builtin_expect(!!(x), 1)
  34 #define unlikely(x)     __builtin_expect(!!(x), 0)
  35 #else
  36 #define likely(x)        (x)
  37 #define unlikely(x)      (x)
  38 #endif
  39
  40 #define VS_MAX(a, b)    (((a) > (b)) ?(a) :(b))
  41 #define VS_MIN(a, b)    (((a) < (b)) ?(a) :(b))
  42 /* clamp x between a and b */
  43 #define VS_CLAMP(x, a, b)  VS_MIN(VS_MAX((a), (x)), (b))
  44
  45 #define VS_DEBUG 2
  46
  47 /// pixel in single layer image
  48 #define PIXEL(img, linesize, x, y, w, h, def) \
  49   (((x) < 0 || (y) < 0 || (x) >= (w) || (y) >= (h)) ? (def) : img[(x) + (y) * (linesize)])
  50 /// pixel in single layer image without rangecheck
  51 #define PIX(img, linesize, x, y) (img[(x) + (y) * (linesize)])
  52 /// pixel in N-channel image. channel in {0..N-1}
  53 #define PIXELN(img, linesize, x, y, w, h, N, channel, def) \
  54   (((x) < 0 || (y) < 0 || (x) >= (w) || (y) >= (h)) ? (def) : img[((x) + (y) * (linesize))*(N) + (channel)])
  55 /// pixel in N-channel image without rangecheck. channel in {0..N-1}
  56 #define PIXN(img, linesize, x, y, N, channel) (img[((x) + (y) * (linesize))*(N) + (channel)])
  57
  58 /**** Configurable memory and logging functions. Defined in libvidstab.c ****/
  59
  60 typedef void* (*vs_malloc_t) (size_t size);
  61 typedef void* (*vs_realloc_t) (void* ptr, size_t size);
  62 typedef void (*vs_free_t) (void* ptr);
  63 typedef void* (*vs_zalloc_t) (size_t size);
  64
  65 typedef int (*vs_log_t) (int type, const char* tag, const char* format, ...);
  66
  67 typedef char* (*vs_strdup_t) (const char* s);
  68
  69 extern vs_log_t vs_log;
  70
  71 extern vs_malloc_t vs_malloc;
  72 extern vs_realloc_t vs_realloc;
  73 extern vs_free_t vs_free;
  74 extern vs_zalloc_t vs_zalloc;
  75
  76 extern vs_strdup_t vs_strdup;
  77
  78 extern int VS_ERROR_TYPE;
  79 extern int VS_WARN_TYPE;
  80 extern int VS_INFO_TYPE;
  81 extern int VS_MSG_TYPE;
  82
  83 extern int VS_ERROR;
  84 extern int VS_OK;
  85
  86 #define vs_log_error(tag, format, args...) \
  87     vs_log(VS_ERROR_TYPE, tag, format , ## args)
  88 #define vs_log_warn(tag, format, args...) \
  89     vs_log(VS_WARN_TYPE, tag, format , ## args)
  90 #define vs_log_info(tag, format, args...) \
  91     vs_log(VS_INFO_TYPE, tag, format , ## args)
  92 #define vs_log_msg(tag, format, args...) \
  93     vs_log(VS_MSG_TYPE, tag, format , ## args)
  94
  95 #endif /* VIDSTABDEFINES_H_ */