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/*****************************************************************************
* common.h: common definitions
* Collection of useful common types and macros definitions
*****************************************************************************
* Copyright (C) 1998, 1999, 2000 VideoLAN
*
* Authors:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* required headers:
* config.h
*****************************************************************************/
/*****************************************************************************
* Basic types definitions
*****************************************************************************/
#include "int_types.h"
typedef u8 byte_t;
/* Boolean type */
typedef int boolean_t;
#ifdef SYS_GNU
#define _MACH_I386_BOOLEAN_H_
#endif
/* Counter for statistics and profiling */
typedef unsigned long count_t;
/*****************************************************************************
* Classes declaration
*****************************************************************************/
/* Plugins */
struct plugin_bank_s;
struct plugin_info_s;
typedef struct plugin_bank_s * p_plugin_bank_t;
typedef struct plugin_info_s * p_plugin_info_t;
/* Playlist */
struct playlist_s;
typedef struct playlist_s * p_playlist_t;
/* Interface */
struct intf_thread_s;
struct intf_sys_s;
struct intf_console_s;
struct intf_msg_s;
struct intf_channel_s;
typedef struct intf_thread_s * p_intf_thread_t;
typedef struct intf_sys_s * p_intf_sys_t;
typedef struct intf_console_s * p_intf_console_t;
typedef struct intf_msg_s * p_intf_msg_t;
typedef struct intf_channel_s * p_intf_channel_t;
/* Input */
struct input_thread_s;
struct input_vlan_s;
struct input_cfg_s;
typedef struct input_thread_s * p_input_thread_t;
typedef struct input_vlan_s * p_input_vlan_t;
typedef struct input_cfg_s * p_input_cfg_t;
/* Audio */
struct aout_thread_s;
struct aout_sys_s;
typedef struct aout_thread_s * p_aout_thread_t;
typedef struct aout_sys_s * p_aout_sys_t;
/* Video */
struct vout_thread_s;
struct vout_font_s;
struct vout_sys_s;
struct vdec_thread_s;
struct vpar_thread_s;
struct video_parser_s;
typedef struct vout_thread_s * p_vout_thread_t;
typedef struct vout_font_s * p_vout_font_t;
typedef struct vout_sys_s * p_vout_sys_t;
typedef struct vdec_thread_s * p_vdec_thread_t;
typedef struct vpar_thread_s * p_vpar_thread_t;
typedef struct video_parser_s * p_video_parser_t;
/*****************************************************************************
* Macros and inline functions
*****************************************************************************/
/* CEIL: division with round to nearest greater integer */
#define CEIL(n, d) ( ((n) / (d)) + ( ((n) % (d)) ? 1 : 0) )
/* PAD: PAD(n, d) = CEIL(n ,d) * d */
#define PAD(n, d) ( ((n) % (d)) ? ((((n) / (d)) + 1) * (d)) : (n) )
/* MAX and MIN: self explanatory */
#ifndef MAX
#define MAX(a, b) ( ((a) > (b)) ? (a) : (b) )
#endif
#ifndef MIN
#define MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
#endif
/* MSB (big endian)/LSB (little endian) convertions - network order is always
* MSB, and should be used for both network communications and files. Note that
* byte orders other than little and big endians are not supported, but only
* the VAX seems to have such exotic properties - note that these 'functions'
* needs <netinet/in.h> or the local equivalent. */
/* FIXME??: hton64 should be declared as an extern inline function to avoid border
* effects (see byteorder.h) */
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define hton16 htons
#define hton32 htonl
#define hton64(i) ( ((u64)(htonl((i) & 0xffffffff)) << 32) | htonl(((i) >> 32) & 0xffffffff ) )
#define ntoh16 ntohs
#define ntoh32 ntohl
#define ntoh64 hton64
#elif __BYTE_ORDER == __BIG_ENDIAN
#define hton16 htons
#define hton32 htonl
#define hton64(i) ( i )
#define ntoh16 ntohs
#define ntoh32 ntohl
#define ntoh64(i) ( i )
#else
/* XXX??: cause a compilation error */
#endif
/* Macros used by input to access the TS buffer */
#define U32_AT(p) ( ntohl ( *( (u32 *)(p) ) ) )
#define U16_AT(p) ( ntohs ( *( (u16 *)(p) ) ) )