1 /*****************************************************************************
2 * common.h: common definitions
3 * Collection of useful common types and macros definitions
4 *****************************************************************************
5 * Copyright (C) 1998, 1999, 2000 VideoLAN
6 * $Id: common.h,v 1.26 2001/01/18 17:40:06 massiot Exp $
8 * Authors: Samuel Hocevar <sam@via.ecp.fr>
9 * Vincent Seguin <seguin@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
29 *****************************************************************************/
31 /*****************************************************************************
32 * Basic types definitions
33 *****************************************************************************/
35 #include "int_types.h"
40 #ifdef BOOLEAN_T_IN_SYS_TYPES_H
41 # include <sys/types.h>
43 typedef int boolean_t;
46 # define _MACH_I386_BOOLEAN_H_
49 /* ptrdiff_t definition */
56 /* Not portable in a 64-bit environment. */
57 typedef int ptrdiff_t;
61 /* Counter for statistics and profiling */
62 typedef unsigned long count_t;
64 /* DCT elements types */
66 typedef short dctelem_t;
68 typedef int dctelem_t;
71 /*****************************************************************************
73 *****************************************************************************/
79 typedef struct plugin_bank_s * p_plugin_bank_t;
80 typedef struct plugin_info_s * p_plugin_info_t;
85 typedef struct playlist_s * p_playlist_t;
90 struct intf_console_s;
92 struct intf_channel_s;
94 typedef struct intf_thread_s * p_intf_thread_t;
95 typedef struct intf_sys_s * p_intf_sys_t;
96 typedef struct intf_console_s * p_intf_console_t;
97 typedef struct intf_msg_s * p_intf_msg_t;
98 typedef struct intf_channel_s * p_intf_channel_t;
101 struct input_thread_s;
105 typedef struct input_thread_s * p_input_thread_t;
106 typedef struct input_vlan_s * p_input_vlan_t;
107 typedef struct input_cfg_s * p_input_cfg_t;
110 struct aout_thread_s;
113 typedef struct aout_thread_s * p_aout_thread_t;
114 typedef struct aout_sys_s * p_aout_sys_t;
117 struct vout_thread_s;
120 struct vdec_thread_s;
121 struct vpar_thread_s;
122 struct video_parser_s;
124 typedef struct vout_thread_s * p_vout_thread_t;
125 typedef struct vout_font_s * p_vout_font_t;
126 typedef struct vout_sys_s * p_vout_sys_t;
127 typedef struct vdec_thread_s * p_vdec_thread_t;
128 typedef struct vpar_thread_s * p_vpar_thread_t;
129 typedef struct video_parser_s * p_video_parser_t;
134 /*****************************************************************************
135 * Macros and inline functions
136 *****************************************************************************/
138 #ifdef NTOHL_IN_SYS_PARAM_H
139 # include <sys/param.h>
141 # include <netinet/in.h>
144 /* CEIL: division with round to nearest greater integer */
145 #define CEIL(n, d) ( ((n) / (d)) + ( ((n) % (d)) ? 1 : 0) )
147 /* PAD: PAD(n, d) = CEIL(n ,d) * d */
148 #define PAD(n, d) ( ((n) % (d)) ? ((((n) / (d)) + 1) * (d)) : (n) )
150 /* MAX and MIN: self explanatory */
152 #define MAX(a, b) ( ((a) > (b)) ? (a) : (b) )
155 #define MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
158 /* MSB (big endian)/LSB (little endian) conversions - network order is always
159 * MSB, and should be used for both network communications and files. Note that
160 * byte orders other than little and big endians are not supported, but only
161 * the VAX seems to have such exotic properties - note that these 'functions'
162 * needs <netinet/in.h> or the local equivalent. */
163 /* FIXME: hton64 should be declared as an extern inline function to avoid
164 * border effects (see byteorder.h) */
168 #define hton64(i) ( i )
171 #define ntoh64(i) ( i )
175 #define hton64(i) ( ((u64)(htonl((i) & 0xffffffff)) << 32) | htonl(((i) >> 32) & 0xffffffff ) )
178 #define ntoh64 hton64
181 /* Macros with automatic casts */
182 #define U64_AT(p) ( ntoh64 ( *( (u64 *)(p) ) ) )
183 #define U32_AT(p) ( ntoh32 ( *( (u32 *)(p) ) ) )
184 #define U16_AT(p) ( ntoh16 ( *( (u16 *)(p) ) ) )